[PATCH RFC v2 6/6] drm/sprd: add Unisoc's drm mipi dsi&dphy driver
Kevin Tang
kevin3.tang at gmail.com
Tue Jan 21 08:51:02 UTC 2020
From: Kevin Tang <kevin.tang at unisoc.com>
Adds dsi host controller support for the Unisoc's display subsystem.
Adds dsi phy support for the Unisoc's display subsystem.
Only MIPI DSI Displays supported, DP/HMDI will be support in the feature.
Cc: Orson Zhai <orsonzhai at gmail.com>
Cc: Baolin Wang <baolin.wang at linaro.org>
Cc: Chunyan Zhang <zhang.lyra at gmail.com>
Signed-off-by: Kevin Tang <kevin.tang at unisoc.com>
---
drivers/gpu/drm/sprd/Makefile | 8 +-
drivers/gpu/drm/sprd/dphy/Makefile | 7 +
drivers/gpu/drm/sprd/dphy/pll/Makefile | 3 +
drivers/gpu/drm/sprd/dphy/pll/megacores_sharkle.c | 626 +++++++++
drivers/gpu/drm/sprd/dphy/sprd_dphy_api.c | 254 ++++
drivers/gpu/drm/sprd/dphy/sprd_dphy_hal.h | 329 +++++
drivers/gpu/drm/sprd/dsi/Makefile | 7 +
drivers/gpu/drm/sprd/dsi/core/Makefile | 3 +
drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.c | 1169 +++++++++++++++++
drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.h | 1417 +++++++++++++++++++++
drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0_ppi.c | 375 ++++++
drivers/gpu/drm/sprd/dsi/sprd_dsi_api.c | 544 ++++++++
drivers/gpu/drm/sprd/dsi/sprd_dsi_api.h | 28 +
drivers/gpu/drm/sprd/dsi/sprd_dsi_hal.h | 1102 ++++++++++++++++
drivers/gpu/drm/sprd/sprd_dphy.c | 246 ++++
drivers/gpu/drm/sprd/sprd_dphy.h | 102 ++
drivers/gpu/drm/sprd/sprd_dsi.c | 652 ++++++++++
drivers/gpu/drm/sprd/sprd_dsi.h | 192 +++
18 files changed, 7062 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/drm/sprd/dphy/Makefile
create mode 100644 drivers/gpu/drm/sprd/dphy/pll/Makefile
create mode 100644 drivers/gpu/drm/sprd/dphy/pll/megacores_sharkle.c
create mode 100644 drivers/gpu/drm/sprd/dphy/sprd_dphy_api.c
create mode 100644 drivers/gpu/drm/sprd/dphy/sprd_dphy_hal.h
create mode 100644 drivers/gpu/drm/sprd/dsi/Makefile
create mode 100644 drivers/gpu/drm/sprd/dsi/core/Makefile
create mode 100644 drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.c
create mode 100644 drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.h
create mode 100644 drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0_ppi.c
create mode 100644 drivers/gpu/drm/sprd/dsi/sprd_dsi_api.c
create mode 100644 drivers/gpu/drm/sprd/dsi/sprd_dsi_api.h
create mode 100644 drivers/gpu/drm/sprd/dsi/sprd_dsi_hal.h
create mode 100644 drivers/gpu/drm/sprd/sprd_dphy.c
create mode 100644 drivers/gpu/drm/sprd/sprd_dphy.h
create mode 100644 drivers/gpu/drm/sprd/sprd_dsi.c
create mode 100644 drivers/gpu/drm/sprd/sprd_dsi.h
diff --git a/drivers/gpu/drm/sprd/Makefile b/drivers/gpu/drm/sprd/Makefile
index 7988c16..e092ee8 100644
--- a/drivers/gpu/drm/sprd/Makefile
+++ b/drivers/gpu/drm/sprd/Makefile
@@ -7,7 +7,11 @@ subdir-ccflags-y += -I$(src)
obj-y := sprd_drm.o \
sprd_crtc.o \
sprd_plane.o \
- sprd_dpu.o
+ sprd_dpu.o \
+ sprd_dsi.o \
+ sprd_dphy.o
obj-y += disp_lib.o
-obj-y += dpu/
\ No newline at end of file
+obj-y += dpu/
+obj-y += dsi/
+obj-y += dphy/
\ No newline at end of file
diff --git a/drivers/gpu/drm/sprd/dphy/Makefile b/drivers/gpu/drm/sprd/dphy/Makefile
new file mode 100644
index 0000000..8a1012d6
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dphy/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+
+subdir-ccflags-y += -I$(src)
+
+obj-y := sprd_dphy_api.o
+
+obj-y += pll/
diff --git a/drivers/gpu/drm/sprd/dphy/pll/Makefile b/drivers/gpu/drm/sprd/dphy/pll/Makefile
new file mode 100644
index 0000000..59e74ec
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dphy/pll/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += megacores_sharkle.o
diff --git a/drivers/gpu/drm/sprd/dphy/pll/megacores_sharkle.c b/drivers/gpu/drm/sprd/dphy/pll/megacores_sharkle.c
new file mode 100644
index 0000000..7c31f5a
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dphy/pll/megacores_sharkle.c
@@ -0,0 +1,626 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include <asm/div64.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/regmap.h>
+#include <linux/string.h>
+
+#include "sprd_dphy.h"
+
+#define L 0
+#define H 1
+#define CLK 0
+#define DATA 1
+#define INFINITY 0xffffffff
+#define MIN_OUTPUT_FREQ (100)
+
+#define AVERAGE(a, b) (min(a, b) + abs((b) - (a)) / 2)
+
+enum TIMING {
+ NONE,
+ REQUEST_TIME,
+ PREPARE_TIME,
+ SETTLE_TIME,
+ ZERO_TIME,
+ TRAIL_TIME,
+ EXIT_TIME,
+ CLKPOST_TIME,
+ TA_GET,
+ TA_GO,
+ TA_SURE,
+ TA_WAIT,
+};
+
+struct pll_regs {
+ union __reg_03__ {
+ struct __03 {
+ u8 prbs_bist: 1;
+ u8 en_lp_treot: 1;
+ u8 lpf_sel: 4;
+ u8 txfifo_bypass: 1;
+ u8 freq_hopping: 1;
+ } bits;
+ u8 val;
+ } _03;
+ union __reg_04__ {
+ struct __04 {
+ u8 div: 3;
+ u8 masterof8lane: 1;
+ u8 hop_trig: 1;
+ u8 cp_s: 2;
+ u8 fdk_s: 1;
+ } bits;
+ u8 val;
+ } _04;
+ union __reg_06__ {
+ struct __06 {
+ u8 nint: 7;
+ u8 mod_en: 1;
+ } bits;
+ u8 val;
+ } _06;
+ union __reg_07__ {
+ struct __07 {
+ u8 kdelta_h: 8;
+ } bits;
+ u8 val;
+ } _07;
+ union __reg_08__ {
+ struct __08 {
+ u8 vco_band: 1;
+ u8 sdm_en: 1;
+ u8 refin: 2;
+ u8 kdelta_l: 4;
+ } bits;
+ u8 val;
+ } _08;
+ union __reg_09__ {
+ struct __09 {
+ u8 kint_h: 8;
+ } bits;
+ u8 val;
+ } _09;
+ union __reg_0a__ {
+ struct __0a {
+ u8 kint_m: 8;
+ } bits;
+ u8 val;
+ } _0a;
+ union __reg_0b__ {
+ struct __0b {
+ u8 out_sel: 4;
+ u8 kint_l: 4;
+ } bits;
+ u8 val;
+ } _0b;
+ union __reg_0c__ {
+ struct __0c {
+ u8 kstep_h: 8;
+ } bits;
+ u8 val;
+ } _0c;
+ union __reg_0d__ {
+ struct __0d {
+ u8 kstep_m: 8;
+ } bits;
+ u8 val;
+ } _0d;
+ union __reg_0e__ {
+ struct __0e {
+ u8 pll_pu_byp: 1;
+ u8 pll_pu: 1;
+ u8 hsbist_len: 2;
+ u8 stopstate_sel: 1;
+ u8 kstep_l: 3;
+ } bits;
+ u8 val;
+ } _0e;
+
+ union __reg_0f__ {
+ struct __0f {
+ u8 det_delay:2;
+ /*12 - 15 -> bit2 - bit5*/
+ u8 kdelta: 4;
+ u8 ldo0p4:2;
+ } bits;
+ u8 val;
+ } _0f;
+
+};
+
+struct dphy_pll {
+ u8 refin; /* Pre-divider control signal */
+ u8 cp_s; /* 00: SDM_EN=1, 10: SDM_EN=0 */
+ u8 fdk_s; /* PLL mode control: integer or fraction */
+ u8 hop_en;
+ u8 mod_en; /* ssc enable */
+ u8 sdm_en;
+ u8 div;
+ u8 int_n; /* integer N PLL */
+ u32 ref_clk; /* dphy reference clock, unit: MHz */
+ u32 freq; /* panel config, unit: KHz */
+ int hop_delta;
+ u32 hop_period;
+ u32 fvco; /* MHz */
+ u32 potential_fvco; /* MHz */
+ u32 nint; /* sigma delta modulator NINT control */
+ u32 kint; /* sigma delta modulator KINT control */
+ u32 sign;
+ u32 kdelta;
+ u32 kstep;
+ u8 lpf_sel; /* low pass filter control */
+ u8 out_sel; /* post divider control */
+ u8 vco_band; /* vco range */
+ u8 det_delay;
+};
+
+static struct pll_regs regs;
+static struct dphy_pll pll;
+
+/* sharkle */
+#define VCO_BAND_LOW 750
+#define VCO_BAND_MID 1100
+#define VCO_BAND_HIGH 1500
+#define PHY_REF_CLK 26000
+
+static int dphy_calc_pll_param(struct dphy_pll *pll)
+{
+ int i;
+ const u32 khz = 1000;
+ const u32 mhz = 1000000;
+ const unsigned long long factor = 100;
+ unsigned long long tmp;
+ u8 delta;
+
+ if (!pll || !pll->freq)
+ goto FAIL;
+
+ pll->potential_fvco = pll->freq / khz; /* MHz */
+ pll->ref_clk = PHY_REF_CLK / khz; /* MHz */
+
+ for (i = 0; i < 4; ++i) {
+ if (pll->potential_fvco >= VCO_BAND_LOW &&
+ pll->potential_fvco <= VCO_BAND_HIGH) {
+ pll->fvco = pll->potential_fvco;
+ pll->out_sel = BIT(i);
+ break;
+ }
+ pll->potential_fvco <<= 1;
+ }
+ if (pll->fvco == 0)
+ goto FAIL;
+
+ if (pll->fvco >= VCO_BAND_LOW && pll->fvco <= VCO_BAND_MID) {
+ /* vco band control */
+ pll->vco_band = 0x0;
+ /* low pass filter control */
+ pll->lpf_sel = 0;
+ } else if (pll->fvco > VCO_BAND_MID && pll->fvco <= VCO_BAND_HIGH) {
+ pll->vco_band = 0x1;
+ pll->lpf_sel = 0;
+ } else
+ goto FAIL;
+
+ pll->nint = pll->fvco / pll->ref_clk;
+ tmp = pll->fvco * factor * mhz;
+ do_div(tmp, pll->ref_clk);
+ tmp = tmp - pll->nint * factor * mhz;
+ tmp *= BIT(20);
+ do_div(tmp, 100000000);
+ pll->kint = (u32)tmp;
+ pll->refin = 3; /* pre-divider bypass */
+ pll->sdm_en = true; /* use fraction N PLL */
+ pll->fdk_s = 0x1; /* fraction */
+ pll->cp_s = 0x0;
+ pll->det_delay = 0x1;
+
+ if (pll->hop_en) {
+ if ((pll->hop_delta == 0) || (pll->hop_period == 0))
+ return 0;
+
+ if (pll->hop_delta < 0) {
+ delta = -pll->hop_delta;
+ pll->sign = true;
+ } else {
+ delta = pll->hop_delta;
+ pll->sign = false;
+ }
+ delta = delta * (i + 1);
+ pll->kstep = pll->ref_clk * pll->hop_period;
+ pll->kdelta = (1 << 20) * delta / pll->ref_clk /
+ pll->kstep + pll->sign * (1 << 11);
+ }
+
+ if (pll->mod_en) {
+ delta = pll->freq / khz * 2 * (i + 1) * 15 / 1000;
+ pll->kstep = pll->ref_clk * pll->hop_period;
+ pll->kdelta = (((1 << 20) * delta / pll->ref_clk /
+ pll->kstep));
+ }
+
+ return 0;
+
+FAIL:
+ if (pll)
+ pll->fvco = 0;
+
+ pr_err("failed to calculate dphy pll parameters\n");
+
+ return -1;
+}
+
+static int dphy_set_pll_reg(struct regmap *regmap, struct dphy_pll *pll)
+{
+ if (!pll || !pll->fvco)
+ goto FAIL;
+
+ regs._03.bits.prbs_bist = 1;
+ regs._03.bits.en_lp_treot = true;
+ regs._03.bits.lpf_sel = pll->lpf_sel;
+ regs._03.bits.txfifo_bypass = 0;
+ regs._03.bits.freq_hopping = pll->hop_en;
+ regs._04.bits.div = pll->div;
+ regs._04.bits.masterof8lane = 1;
+ regs._04.bits.cp_s = pll->cp_s;
+ regs._04.bits.fdk_s = pll->fdk_s;
+ regs._06.bits.nint = pll->nint;
+ regs._06.bits.mod_en = pll->mod_en;
+ regs._07.bits.kdelta_h = pll->kdelta >> 4;
+ regs._07.bits.kdelta_h |= pll->sign << 7;
+ regs._08.bits.vco_band = pll->vco_band;
+ regs._08.bits.sdm_en = pll->sdm_en;
+ regs._08.bits.refin = pll->refin;
+ regs._08.bits.kdelta_l = pll->kdelta & 0xf;
+ regs._09.bits.kint_h = pll->kint >> 12;
+ regs._0a.bits.kint_m = (pll->kint >> 4) & 0xff;
+ regs._0b.bits.out_sel = pll->out_sel;
+ regs._0b.bits.kint_l = pll->kint & 0xf;
+ regs._0c.bits.kstep_h = pll->kstep >> 11;
+ regs._0d.bits.kstep_m = (pll->kstep >> 3) & 0xff;
+ regs._0e.bits.pll_pu_byp = 0;
+ regs._0e.bits.pll_pu = 0;
+ regs._0e.bits.stopstate_sel = 1;
+ regs._0e.bits.kstep_l = pll->kstep & 0x7;
+ regs._0f.bits.det_delay = pll->det_delay;
+ regs._0f.bits.kdelta = pll->kdelta >> 12;
+
+ regmap_write(regmap, 0x03, regs._03.val);
+ regmap_write(regmap, 0x04, regs._04.val);
+ regmap_write(regmap, 0x07, regs._07.val);
+ regmap_write(regmap, 0x08, regs._08.val);
+ regmap_write(regmap, 0x09, regs._09.val);
+ regmap_write(regmap, 0x0a, regs._0a.val);
+ regmap_write(regmap, 0x0b, regs._0b.val);
+ regmap_write(regmap, 0x0c, regs._0c.val);
+ regmap_write(regmap, 0x0d, regs._0d.val);
+ regmap_write(regmap, 0x0e, regs._0e.val);
+ regmap_write(regmap, 0x0f, regs._0f.val);
+ regmap_write(regmap, 0x06, regs._06.val);
+
+ return 0;
+
+FAIL:
+ pr_err("failed to set dphy pll registers\n");
+
+ return -1;
+}
+
+static int dphy_pll_config(struct dphy_context *ctx)
+{
+ int ret;
+ struct regmap *regmap = ctx->regmap;
+
+ pll.freq = ctx->freq;
+
+ /* FREQ = 26M * (NINT + KINT / 2^20) / out_sel */
+ ret = dphy_calc_pll_param(&pll);
+ if (ret)
+ goto FAIL;
+ ret = dphy_set_pll_reg(regmap, &pll);
+ if (ret)
+ goto FAIL;
+
+ return 0;
+
+FAIL:
+ pr_err("failed to config dphy pll\n");
+
+ return -1;
+}
+
+static int dphy_set_timing_regs(struct regmap *regmap, int type, u8 val[])
+{
+ switch (type) {
+ case REQUEST_TIME:
+ regmap_write(regmap, 0x31, val[CLK]);
+ regmap_write(regmap, 0x41, val[DATA]);
+ regmap_write(regmap, 0x51, val[DATA]);
+ regmap_write(regmap, 0x61, val[DATA]);
+ regmap_write(regmap, 0x71, val[DATA]);
+
+ regmap_write(regmap, 0x90, val[CLK]);
+ regmap_write(regmap, 0xa0, val[DATA]);
+ regmap_write(regmap, 0xb0, val[DATA]);
+ regmap_write(regmap, 0xc0, val[DATA]);
+ regmap_write(regmap, 0xd0, val[DATA]);
+ break;
+ case PREPARE_TIME:
+ regmap_write(regmap, 0x32, val[CLK]);
+ regmap_write(regmap, 0x42, val[DATA]);
+ regmap_write(regmap, 0x52, val[DATA]);
+ regmap_write(regmap, 0x62, val[DATA]);
+ regmap_write(regmap, 0x72, val[DATA]);
+
+ regmap_write(regmap, 0x91, val[CLK]);
+ regmap_write(regmap, 0xa1, val[DATA]);
+ regmap_write(regmap, 0xb1, val[DATA]);
+ regmap_write(regmap, 0xc1, val[DATA]);
+ regmap_write(regmap, 0xd1, val[DATA]);
+ break;
+ case ZERO_TIME:
+ regmap_write(regmap, 0x33, val[CLK]);
+ regmap_write(regmap, 0x43, val[DATA]);
+ regmap_write(regmap, 0x53, val[DATA]);
+ regmap_write(regmap, 0x63, val[DATA]);
+ regmap_write(regmap, 0x73, val[DATA]);
+
+ regmap_write(regmap, 0x92, val[CLK]);
+ regmap_write(regmap, 0xa2, val[DATA]);
+ regmap_write(regmap, 0xb2, val[DATA]);
+ regmap_write(regmap, 0xc2, val[DATA]);
+ regmap_write(regmap, 0xd2, val[DATA]);
+ break;
+ case TRAIL_TIME:
+ regmap_write(regmap, 0x34, val[CLK]);
+ regmap_write(regmap, 0x44, val[DATA]);
+ regmap_write(regmap, 0x54, val[DATA]);
+ regmap_write(regmap, 0x64, val[DATA]);
+ regmap_write(regmap, 0x74, val[DATA]);
+
+ regmap_write(regmap, 0x93, val[CLK]);
+ regmap_write(regmap, 0xa3, val[DATA]);
+ regmap_write(regmap, 0xb3, val[DATA]);
+ regmap_write(regmap, 0xc3, val[DATA]);
+ regmap_write(regmap, 0xd3, val[DATA]);
+ break;
+ case EXIT_TIME:
+ regmap_write(regmap, 0x36, val[CLK]);
+ regmap_write(regmap, 0x46, val[DATA]);
+ regmap_write(regmap, 0x56, val[DATA]);
+ regmap_write(regmap, 0x66, val[DATA]);
+ regmap_write(regmap, 0x76, val[DATA]);
+
+ regmap_write(regmap, 0x95, val[CLK]);
+ regmap_write(regmap, 0xA5, val[DATA]);
+ regmap_write(regmap, 0xB5, val[DATA]);
+ regmap_write(regmap, 0xc5, val[DATA]);
+ regmap_write(regmap, 0xd5, val[DATA]);
+ break;
+ case CLKPOST_TIME:
+ regmap_write(regmap, 0x35, val[CLK]);
+ regmap_write(regmap, 0x94, val[CLK]);
+ break;
+
+ /* the following just use default value */
+ case SETTLE_TIME:
+ case TA_GET:
+ case TA_GO:
+ case TA_SURE:
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int dphy_timing_config(struct dphy_context *ctx)
+{
+ u8 val[2];
+ u32 tmp = 0;
+ u32 range[2], constant;
+ u32 t_ui, t_byteck, t_half_byteck;
+ const u32 factor = 2;
+ const u32 scale = 100;
+ struct regmap *regmap = ctx->regmap;
+
+ /* t_ui: 1 ui, byteck: 8 ui, half byteck: 4 ui */
+ t_ui = 1000 * scale / (ctx->freq / 1000);
+ t_byteck = t_ui << 3;
+ t_half_byteck = t_ui << 2;
+ constant = t_ui << 1;
+
+ /* REQUEST_TIME: HS T-LPX: LP-01
+ * For T-LPX, mipi spec defined min value is 50ns,
+ * but maybe it shouldn't be too small, because BTA,
+ * LP-10, LP-00, LP-01, all of this is related to T-LPX.
+ */
+ range[L] = 50 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * (factor << 1), t_byteck) - 2;
+ val[DATA] = val[CLK];
+ dphy_set_timing_regs(regmap, REQUEST_TIME, val);
+
+ /* PREPARE_TIME: HS sequence: LP-00 */
+ range[L] = 38 * scale;
+ range[H] = 95 * scale;
+ tmp = AVERAGE(range[L], range[H]);
+ val[CLK] = DIV_ROUND_UP(AVERAGE(range[L], range[H]),
+ t_half_byteck) - 1;
+ range[L] = 40 * scale + 4 * t_ui;
+ range[H] = 85 * scale + 6 * t_ui;
+ tmp |= AVERAGE(range[L], range[H]) << 16;
+ val[DATA] = DIV_ROUND_UP(AVERAGE(range[L], range[H]),
+ t_half_byteck) - 1;
+ dphy_set_timing_regs(regmap, PREPARE_TIME, val);
+
+ /* ZERO_TIME: HS-ZERO */
+ range[L] = 300 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor + (tmp & 0xffff)
+ - 525 * t_byteck / 100, t_byteck) - 2;
+ range[L] = 145 * scale + 10 * t_ui;
+ val[DATA] = DIV_ROUND_UP(range[L] * factor
+ + ((tmp >> 16) & 0xffff) - 525 * t_byteck / 100,
+ t_byteck) - 2;
+ dphy_set_timing_regs(regmap, ZERO_TIME, val);
+
+ /* TRAIL_TIME: HS-TRAIL */
+ range[L] = 60 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor - constant, t_half_byteck);
+ range[L] = max(8 * t_ui, 60 * scale + 4 * t_ui);
+ val[DATA] = DIV_ROUND_UP(range[L] * 3 / 2 - constant, t_half_byteck) - 2;
+ dphy_set_timing_regs(regmap, TRAIL_TIME, val);
+
+ /* EXIT_TIME: */
+ range[L] = 100 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor, t_byteck) - 2;
+ val[DATA] = val[CLK];
+ dphy_set_timing_regs(regmap, EXIT_TIME, val);
+
+ /* CLKPOST_TIME: */
+ range[L] = 60 * scale + 52 * t_ui;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor, t_byteck) - 2;
+ val[DATA] = val[CLK];
+ dphy_set_timing_regs(regmap, CLKPOST_TIME, val);
+
+ /* SETTLE_TIME:
+ * This time is used for receiver. So for transmitter,
+ * it can be ignored.
+ */
+
+ /* TA_GO:
+ * transmitter drives bridge state(LP-00) before releasing control,
+ * reg 0x1f default value: 0x04, which is good.
+ */
+
+ /* TA_SURE:
+ * After LP-10 state and before bridge state(LP-00),
+ * reg 0x20 default value: 0x01, which is good.
+ */
+
+ /* TA_GET:
+ * receiver drives Bridge state(LP-00) before releasing control
+ * reg 0x21 default value: 0x03, which is good.
+ */
+
+ return 0;
+}
+
+static int dphy_hop_start(struct dphy_context *ctx)
+{
+ struct regmap *regmap = ctx->regmap;
+
+ /* start hopping */
+ regs._04.bits.hop_trig = !regs._04.bits.hop_trig;
+ regmap_write(regmap, 0x04, regs._04.val);
+
+ mdelay(1);
+
+ pr_info("start hopping\n");
+ return 0;
+}
+
+static int dphy_hop_stop(struct dphy_context *ctx)
+{
+ struct regmap *regmap = ctx->regmap;
+
+ regs._03.bits.freq_hopping = 0;
+ regmap_write(regmap, 0x03, regs._03.val);
+
+ pr_info("stop hopping\n");
+ return 0;
+}
+
+static int dphy_hop_config(struct dphy_context *ctx, int delta, int period)
+{
+ dphy_hop_stop(ctx);
+
+ if (delta == 0) {
+ pll.hop_en = false;
+ return 0;
+ }
+
+ pll.hop_en = true;
+ pll.mod_en = false;
+ pll.hop_delta = delta / 1000; /* Mhz */
+ pll.hop_period = period; /* us */
+
+ dphy_pll_config(ctx);
+ dphy_hop_start(ctx);
+
+ return 0;
+}
+
+static int dphy_ssc_start(struct dphy_context *ctx)
+{
+ pll.mod_en = true;
+ pll.hop_en = false;
+ pll.hop_period = 15;/* us */
+
+ dphy_pll_config(ctx);
+
+ mdelay(1);
+
+ return 0;
+}
+
+static int dphy_ssc_stop(struct dphy_context *ctx)
+{
+ struct regmap *regmap = ctx->regmap;
+
+ pll.mod_en = false;
+ regs._06.bits.mod_en = false;
+ regmap_write(regmap, 0x06, regs._06.val);
+
+ return 0;
+}
+
+static int dphy_ssc_en(struct dphy_context *ctx, bool en)
+{
+ if (en) {
+ pr_info("ssc enable\n");
+ dphy_ssc_start(ctx);
+ } else {
+ dphy_ssc_stop(ctx);
+ pr_info("ssc disable\n");
+ }
+
+ return 0;
+}
+
+/**
+ * Force D-PHY PLL to stay on while in ULPS
+ * @param phy: pointer to structure
+ * which holds information about the d-phy module
+ * @param force (1) disable (0)
+ * @note To follow the programming model, use wakeup_pll function
+ */
+static void dphy_force_pll(struct dphy_context *ctx, int force)
+{
+ u8 data;
+ struct regmap *regmap = ctx->regmap;
+
+ if (force)
+ data = 0x03;
+ else
+ data = 0x0;
+
+ /* for megocores, to force pll, dphy register should be set */
+ regmap_write(regmap, 0x0e, data);
+}
+
+struct dphy_pll_ops sharkle_dphy_pll_ops = {
+ .pll_config = dphy_pll_config,
+ .timing_config = dphy_timing_config,
+ .hop_config = dphy_hop_config,
+ .ssc_en = dphy_ssc_en,
+ .force_pll = dphy_force_pll,
+};
diff --git a/drivers/gpu/drm/sprd/dphy/sprd_dphy_api.c b/drivers/gpu/drm/sprd/dphy/sprd_dphy_api.c
new file mode 100644
index 0000000..96c02d5
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dphy/sprd_dphy_api.c
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+
+#include "sprd_dphy_hal.h"
+
+static int dphy_wait_pll_locked(struct sprd_dphy *dphy)
+{
+ u32 i = 0;
+
+ for (i = 0; i < 50000; i++) {
+ if (dphy_hal_is_pll_locked(dphy))
+ return 0;
+ udelay(3);
+ }
+
+ pr_err("error: dphy pll can not be locked\n");
+ return -1;
+}
+
+static int dphy_wait_datalane_stop_state(struct sprd_dphy *dphy, u8 mask)
+{
+ u32 i = 0;
+
+ for (i = 0; i < 5000; i++) {
+ if (dphy_hal_is_stop_state_datalane(dphy) == mask)
+ return 0;
+ udelay(10);
+ }
+
+ pr_err("wait datalane stop-state time out\n");
+ return -1;
+}
+
+static int dphy_wait_datalane_ulps_active(struct sprd_dphy *dphy, u8 mask)
+{
+ u32 i = 0;
+
+ for (i = 0; i < 5000; i++) {
+ if (dphy_hal_is_ulps_active_datalane(dphy) == mask)
+ return 0;
+ udelay(10);
+ }
+
+ pr_err("wait datalane ulps-active time out\n");
+ return -1;
+}
+
+static int dphy_wait_clklane_stop_state(struct sprd_dphy *dphy)
+{
+ u32 i = 0;
+
+ for (i = 0; i < 5000; i++) {
+ if (dphy_hal_is_stop_state_clklane(dphy))
+ return 0;
+ udelay(10);
+ }
+
+ pr_err("wait clklane stop-state time out\n");
+ return -1;
+}
+
+static int dphy_wait_clklane_ulps_active(struct sprd_dphy *dphy)
+{
+ u32 i = 0;
+
+ for (i = 0; i < 5000; i++) {
+ if (dphy_hal_is_ulps_active_clklane(dphy))
+ return 0;
+ udelay(10);
+ }
+
+ pr_err("wait clklane ulps-active time out\n");
+ return -1;
+}
+
+int sprd_dphy_configure(struct sprd_dphy *dphy)
+{
+ struct dphy_pll_ops *pll = dphy->pll;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ pr_info("lanes : %d\n", ctx->lanes);
+ pr_info("freq : %d\n", ctx->freq);
+
+ dphy_hal_rstz(dphy, 0);
+ dphy_hal_shutdownz(dphy, 0);
+ dphy_hal_clklane_en(dphy, 0);
+
+ dphy_hal_test_clr(dphy, 0);
+ dphy_hal_test_clr(dphy, 1);
+ dphy_hal_test_clr(dphy, 0);
+
+ pll->pll_config(ctx);
+ pll->timing_config(ctx);
+
+ dphy_hal_shutdownz(dphy, 1);
+ dphy_hal_rstz(dphy, 1);
+ dphy_hal_stop_wait_time(dphy, 0x1C);
+ dphy_hal_clklane_en(dphy, 1);
+ dphy_hal_datalane_en(dphy);
+
+ if (dphy_wait_pll_locked(dphy))
+ return -1;
+
+ return 0;
+}
+
+void sprd_dphy_reset(struct sprd_dphy *dphy)
+{
+ dphy_hal_rstz(dphy, 0);
+ udelay(10);
+ dphy_hal_rstz(dphy, 1);
+}
+
+void sprd_dphy_shutdown(struct sprd_dphy *dphy)
+{
+ dphy_hal_shutdownz(dphy, 0);
+ udelay(10);
+ dphy_hal_shutdownz(dphy, 1);
+}
+
+int sprd_dphy_hop_config(struct sprd_dphy *dphy, int delta, int period)
+{
+ struct dphy_pll_ops *pll = dphy->pll;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (pll->hop_config)
+ return pll->hop_config(ctx, delta, period);
+
+ return 0;
+}
+
+int sprd_dphy_ssc_en(struct sprd_dphy *dphy, bool en)
+{
+ struct dphy_pll_ops *pll = dphy->pll;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (pll->ssc_en)
+ return pll->ssc_en(ctx, en);
+
+ return 0;
+}
+
+int sprd_dphy_close(struct sprd_dphy *dphy)
+{
+ if (!dphy)
+ return -1;
+
+ dphy_hal_rstz(dphy, 0);
+ dphy_hal_shutdownz(dphy, 0);
+ dphy_hal_rstz(dphy, 1);
+
+ return 0;
+}
+
+int sprd_dphy_data_ulps_enter(struct sprd_dphy *dphy)
+{
+ u8 lane_mask = (1 << dphy->ctx.lanes) - 1;
+
+ dphy_hal_datalane_ulps_rqst(dphy, 1);
+
+ dphy_wait_datalane_ulps_active(dphy, lane_mask);
+
+ dphy_hal_datalane_ulps_rqst(dphy, 0);
+
+ return 0;
+}
+
+int sprd_dphy_data_ulps_exit(struct sprd_dphy *dphy)
+{
+ u8 lane_mask = (1 << dphy->ctx.lanes) - 1;
+
+ dphy_hal_datalane_ulps_exit(dphy, 1);
+
+ dphy_wait_datalane_stop_state(dphy, lane_mask);
+
+ dphy_hal_datalane_ulps_exit(dphy, 0);
+
+ return 0;
+}
+
+int sprd_dphy_clk_ulps_enter(struct sprd_dphy *dphy)
+{
+ dphy_hal_clklane_ulps_rqst(dphy, 1);
+
+ dphy_wait_clklane_ulps_active(dphy);
+
+ dphy_hal_clklane_ulps_rqst(dphy, 0);
+
+ return 0;
+}
+
+int sprd_dphy_clk_ulps_exit(struct sprd_dphy *dphy)
+{
+ dphy_hal_clklane_ulps_exit(dphy, 1);
+
+ dphy_wait_clklane_stop_state(dphy);
+
+ dphy_hal_clklane_ulps_exit(dphy, 0);
+
+ return 0;
+}
+
+void sprd_dphy_force_pll(struct sprd_dphy *dphy, bool enable)
+{
+ dphy_hal_force_pll(dphy, enable);
+}
+
+void sprd_dphy_hs_clk_en(struct sprd_dphy *dphy, bool enable)
+{
+ dphy_hal_clk_hs_rqst(dphy, enable);
+
+ dphy_wait_pll_locked(dphy);
+}
+
+void sprd_dphy_test_write(struct sprd_dphy *dphy, u8 address, u8 data)
+{
+ dphy_hal_test_en(dphy, 1);
+
+ dphy_hal_test_din(dphy, address);
+
+ dphy_hal_test_clk(dphy, 1);
+ dphy_hal_test_clk(dphy, 0);
+
+ dphy_hal_test_en(dphy, 0);
+
+ dphy_hal_test_din(dphy, data);
+
+ dphy_hal_test_clk(dphy, 1);
+ dphy_hal_test_clk(dphy, 0);
+}
+
+u8 sprd_dphy_test_read(struct sprd_dphy *dphy, u8 address)
+{
+ dphy_hal_test_en(dphy, 1);
+
+ dphy_hal_test_din(dphy, address);
+
+ dphy_hal_test_clk(dphy, 1);
+ dphy_hal_test_clk(dphy, 0);
+
+ dphy_hal_test_en(dphy, 0);
+
+ udelay(1);
+
+ return dphy_hal_test_dout(dphy);
+}
+
+
+
diff --git a/drivers/gpu/drm/sprd/dphy/sprd_dphy_hal.h b/drivers/gpu/drm/sprd/dphy/sprd_dphy_hal.h
new file mode 100644
index 0000000..b1d32be
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dphy/sprd_dphy_hal.h
@@ -0,0 +1,329 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include "sprd_dphy.h"
+
+
+/*
+ * Reset D-PHY module
+ * @param dphy: pointer to structure
+ * which holds information about the d-dphy module
+ * @param reset
+ */
+static inline void dphy_hal_rstz(struct sprd_dphy *dphy, int level)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->rstz)
+ ppi->rstz(ctx, level);
+}
+
+/*
+ * Power up/down D-PHY module
+ * @param dphy: pointer to structure
+ * which holds information about the d-dphy module
+ * @param enable (1: shutdown)
+ */
+static inline void dphy_hal_shutdownz(struct sprd_dphy *dphy, int level)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->shutdownz)
+ ppi->shutdownz(ctx, level);
+}
+
+/*
+ * Force D-PHY PLL to stay on while in ULPS
+ * @param dphy: pointer to structure
+ * which holds information about the d-dphy module
+ * @param force (1) disable (0)
+ * @note To follow the programming model, use wakeup_pll function
+ */
+static inline void dphy_hal_force_pll(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->force_pll)
+ ppi->force_pll(ctx, en);
+}
+
+static inline void dphy_hal_clklane_ulps_rqst(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->clklane_ulps_rqst)
+ ppi->clklane_ulps_rqst(ctx, en);
+}
+
+static inline void dphy_hal_clklane_ulps_exit(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->clklane_ulps_exit)
+ ppi->clklane_ulps_exit(ctx, en);
+}
+
+static inline void dphy_hal_datalane_ulps_rqst(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->datalane_ulps_rqst)
+ ppi->datalane_ulps_rqst(ctx, en);
+}
+
+static inline void dphy_hal_datalane_ulps_exit(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->datalane_ulps_exit)
+ ppi->datalane_ulps_exit(ctx, en);
+}
+
+/*
+ * Configure minimum wait period for HS transmission request after a stop state
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param no_of_byte_cycles [in byte (lane) clock cycles]
+ */
+static inline void dphy_hal_stop_wait_time(struct sprd_dphy *dphy, u8 cycles)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->stop_wait_time)
+ ppi->stop_wait_time(ctx, cycles);
+}
+
+/*
+ * Set number of active lanes
+ * @param dphy: pointer to structure
+ * which holds information about the d-dphy module
+ * @param no_of_lanes
+ */
+static inline void dphy_hal_datalane_en(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->datalane_en)
+ ppi->datalane_en(ctx);
+}
+
+/*
+ * Enable clock lane module
+ * @param dphy pointer to structure
+ * which holds information about the d-dphy module
+ * @param en
+ */
+static inline void dphy_hal_clklane_en(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->clklane_en)
+ ppi->clklane_en(ctx, en);
+}
+
+/*
+ * Request the PHY module to start transmission of high speed clock.
+ * This causes the clock lane to start transmitting DDR clock on the
+ * lane interconnect.
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param enable
+ * @note this function should be called explicitly by user always except for
+ * transmitting
+ */
+static inline void dphy_hal_clk_hs_rqst(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->clk_hs_rqst)
+ ppi->clk_hs_rqst(ctx, en);
+}
+
+/*
+ * Get D-PHY PPI status
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param mask
+ * @return status
+ */
+static inline u8 dphy_hal_is_pll_locked(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_pll_locked)
+ return 1;
+
+ return ppi->is_pll_locked(ctx);
+}
+
+static inline u8 dphy_hal_is_rx_direction(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_rx_direction)
+ return 0;
+
+ return ppi->is_rx_direction(ctx);
+}
+
+static inline u8 dphy_hal_is_rx_ulps_esc_lane0(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_rx_ulps_esc_lane0)
+ return 0;
+
+ return ppi->is_rx_ulps_esc_lane0(ctx);
+}
+
+static inline u8 dphy_hal_is_stop_state_clklane(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_stop_state_clklane)
+ return 1;
+
+ return ppi->is_stop_state_clklane(ctx);
+}
+
+static inline u8 dphy_hal_is_stop_state_datalane(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_stop_state_datalane)
+ return 1;
+
+ return ppi->is_stop_state_datalane(ctx);
+}
+
+static inline u8 dphy_hal_is_ulps_active_clklane(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_ulps_active_clklane)
+ return 1;
+
+ return ppi->is_ulps_active_clklane(ctx);
+}
+
+static inline u8 dphy_hal_is_ulps_active_datalane(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_ulps_active_datalane)
+ return 1;
+
+ return ppi->is_ulps_active_datalane(ctx);
+}
+
+/*
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param value
+ */
+static inline void dphy_hal_test_clk(struct sprd_dphy *dphy, u8 level)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->tst_clk)
+ ppi->tst_clk(ctx, level);
+}
+
+/*
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param value
+ */
+static inline void dphy_hal_test_clr(struct sprd_dphy *dphy, u8 level)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->tst_clr)
+ ppi->tst_clr(ctx, level);
+}
+
+/*
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param on_falling_edge
+ */
+static inline void dphy_hal_test_en(struct sprd_dphy *dphy, u8 level)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->tst_en)
+ ppi->tst_en(ctx, level);
+}
+
+/*
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ */
+static inline u8 dphy_hal_test_dout(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->tst_dout)
+ return ppi->tst_dout(ctx);
+
+ return 0;
+}
+
+/*
+ * @param dphy pointer to structure which holds information about the d-dphy
+ * module
+ * @param test_data
+ */
+static inline void dphy_hal_test_din(struct sprd_dphy *dphy, u8 data)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->tst_din)
+ ppi->tst_din(ctx, data);
+}
+
+static inline void dphy_hal_bist_en(struct sprd_dphy *dphy, int en)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (ppi->bist_en)
+ ppi->bist_en(ctx, en);
+}
+
+static inline u8 dphy_hal_is_bist_ok(struct sprd_dphy *dphy)
+{
+ struct dphy_ppi_ops *ppi = dphy->ppi;
+ struct dphy_context *ctx = &dphy->ctx;
+
+ if (!ppi->is_bist_ok)
+ return 1;
+
+ return ppi->is_bist_ok(ctx);
+}
+
diff --git a/drivers/gpu/drm/sprd/dsi/Makefile b/drivers/gpu/drm/sprd/dsi/Makefile
new file mode 100644
index 0000000..b7999b5
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+
+subdir-ccflags-y += -I$(src)
+
+obj-y += sprd_dsi_api.o
+
+obj-y += core/
diff --git a/drivers/gpu/drm/sprd/dsi/core/Makefile b/drivers/gpu/drm/sprd/dsi/core/Makefile
new file mode 100644
index 0000000..8b0fcfc
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/core/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += dsi_ctrl_r1p0.o dsi_ctrl_r1p0_ppi.o
diff --git a/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.c b/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.c
new file mode 100644
index 0000000..d56d156
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.c
@@ -0,0 +1,1169 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include "sprd_dsi.h"
+#include "dsi_ctrl_r1p0.h"
+
+/*
+ * Get DSI Host core version
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return ascii number of the version
+ */
+static bool dsi_check_version(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ u32 version = readl(®->DSI_VERSION);
+
+ if (version == 0x100)
+ return true;
+ else if (version == 0x200)
+ return true;
+ else if (version == 0x300)
+ return true;
+ else
+ return false;
+}
+/*
+ * Modify power status of DSI Host core
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param on (1) or off (0)
+ */
+static void dsi_power_enable(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(enable, ®->SOFT_RESET);
+}
+/*
+ * Enable/disable DPI video mode
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable (1) - disable (0)
+ */
+static void dsi_video_mode(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(0, ®->DSI_MODE_CFG);
+}
+/*
+ * Enable command mode (Generic interface)
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_cmd_mode(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(1, ®->DSI_MODE_CFG);
+}
+
+static bool dsi_is_cmd_mode(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ return readl(®->DSI_MODE_CFG);
+}
+/*
+ * Configure the read back virtual channel for the generic interface
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param vc to listen to on the line
+ */
+static void dsi_rx_vcid(struct dsi_context *ctx, u8 vc)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x1C virtual_channel_id;
+
+ virtual_channel_id.val = readl(®->VIRTUAL_CHANNEL_ID);
+ virtual_channel_id.bits.gen_rx_vcid = vc;
+
+ writel(virtual_channel_id.val, ®->VIRTUAL_CHANNEL_ID);
+}
+/*
+ * Write the DPI video virtual channel destination
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param vc virtual channel
+ */
+static void dsi_video_vcid(struct dsi_context *ctx, u8 vc)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x1C virtual_channel_id;
+
+ virtual_channel_id.val = readl(®->VIRTUAL_CHANNEL_ID);
+ virtual_channel_id.bits.video_pkt_vcid = vc;
+
+ writel(virtual_channel_id.val, ®->VIRTUAL_CHANNEL_ID);
+}
+/*
+ * Set DPI video mode type (burst/non-burst - with sync pulses or events)
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param type
+ * @return error code
+ */
+static void dsi_dpi_video_burst_mode(struct dsi_context *ctx, int mode)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(®->VID_MODE_CFG);
+ vid_mode_cfg.bits.vid_mode_type = mode;
+
+ writel(vid_mode_cfg.val, ®->VID_MODE_CFG);
+}
+/*
+ * Set DPI video color coding
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param color_coding enum (configuration and color depth)
+ * @return error code
+ */
+static void dsi_dpi_color_coding(struct dsi_context *ctx, int coding)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x20 dpi_video_format;
+
+ dpi_video_format.val = readl(®->DPI_VIDEO_FORMAT);
+ dpi_video_format.bits.dpi_video_mode_format = coding;
+
+ writel(dpi_video_format.val, ®->DPI_VIDEO_FORMAT);
+}
+/*
+ * Set DPI loosely packetisation video (used only when color depth = 18
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_dpi_18_loosely_packet_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x20 dpi_video_format;
+
+ dpi_video_format.val = readl(®->DPI_VIDEO_FORMAT);
+ dpi_video_format.bits.loosely18_en = enable;
+
+ writel(dpi_video_format.val, ®->DPI_VIDEO_FORMAT);
+}
+/*
+ * Configure the Horizontal Line time
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle taken to transmit the total of the horizontal line
+ */
+static void dsi_dpi_hline_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x2C video_line_time;
+
+ video_line_time.val = readl(®->VIDEO_LINE_TIME);
+ video_line_time.bits.video_line_time = byte_cycle;
+
+ writel(video_line_time.val, ®->VIDEO_LINE_TIME);
+}
+/*
+ * Configure the Horizontal back porch time
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle taken to transmit the horizontal back porch
+ */
+static void dsi_dpi_hbp_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x28 video_line_hblk_time;
+
+ video_line_hblk_time.val = readl(®->VIDEO_LINE_HBLK_TIME);
+ video_line_hblk_time.bits.video_line_hbp_time = byte_cycle;
+
+ writel(video_line_hblk_time.val, ®->VIDEO_LINE_HBLK_TIME);
+}
+/*
+ * Configure the Horizontal sync time
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle taken to transmit the horizontal sync
+ */
+static void dsi_dpi_hsync_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x28 video_line_hblk_time;
+
+ video_line_hblk_time.val = readl(®->VIDEO_LINE_HBLK_TIME);
+ video_line_hblk_time.bits.video_line_hsa_time = byte_cycle;
+
+ writel(video_line_hblk_time.val, ®->VIDEO_LINE_HBLK_TIME);
+}
+/*
+ * Configure the vertical active lines of the video stream
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param lines
+ */
+static void dsi_dpi_vact(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x34 video_active_lines;
+
+ video_active_lines.val = readl(®->VIDEO_VACTIVE_LINES);
+ video_active_lines.bits.vactive_lines = lines;
+
+ writel(video_active_lines.val, ®->VIDEO_VACTIVE_LINES);
+}
+/*
+ * Configure the vertical front porch lines of the video stream
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param lines
+ */
+static void dsi_dpi_vfp(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x30 video_vblk_lines;
+
+ video_vblk_lines.val = readl(®->VIDEO_VBLK_LINES);
+ video_vblk_lines.bits.vfp_lines = lines;
+
+ writel(video_vblk_lines.val, ®->VIDEO_VBLK_LINES);
+}
+/*
+ * Configure the vertical back porch lines of the video stream
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param lines
+ */
+static void dsi_dpi_vbp(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x30 video_vblk_lines;
+
+ video_vblk_lines.val = readl(®->VIDEO_VBLK_LINES);
+ video_vblk_lines.bits.vbp_lines = lines;
+
+ writel(video_vblk_lines.val, ®->VIDEO_VBLK_LINES);
+}
+/*
+ * Configure the vertical sync lines of the video stream
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param lines
+ */
+static void dsi_dpi_vsync(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x30 video_vblk_lines;
+
+ video_vblk_lines.val = readl(®->VIDEO_VBLK_LINES);
+ video_vblk_lines.bits.vsa_lines = lines;
+
+ writel(video_vblk_lines.val, ®->VIDEO_VBLK_LINES);
+}
+/*
+ * Enable return to low power mode inside horizontal front porch periods when
+ * timing allows
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable (1) - disable (0)
+ */
+static void dsi_dpi_hporch_lp_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(®->VID_MODE_CFG);
+
+ vid_mode_cfg.bits.lp_hfp_en = enable;
+ vid_mode_cfg.bits.lp_hbp_en = enable;
+
+ writel(vid_mode_cfg.val, ®->VID_MODE_CFG);
+}
+/*
+ * Enable return to low power mode inside vertical active lines periods when
+ * timing allows
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable (1) - disable (0)
+ */
+static void dsi_dpi_vporch_lp_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(®->VID_MODE_CFG);
+
+ vid_mode_cfg.bits.lp_vact_en = enable;
+ vid_mode_cfg.bits.lp_vfp_en = enable;
+ vid_mode_cfg.bits.lp_vbp_en = enable;
+ vid_mode_cfg.bits.lp_vsa_en = enable;
+
+ writel(vid_mode_cfg.val, ®->VID_MODE_CFG);
+}
+/*
+ * Enable FRAME BTA ACK
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable (1) - disable (0)
+ */
+static void dsi_dpi_frame_ack_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(®->VID_MODE_CFG);
+ vid_mode_cfg.bits.frame_bta_ack_en = enable;
+
+ writel(vid_mode_cfg.val, ®->VID_MODE_CFG);
+}
+/*
+ * Write no of chunks to core - taken into consideration only when multi packet
+ * is enabled
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no of chunks
+ */
+static void dsi_dpi_chunk_num(struct dsi_context *ctx, u16 num)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x24 video_pkt_config;
+
+ video_pkt_config.val = readl(®->VIDEO_PKT_CONFIG);
+ video_pkt_config.bits.video_line_chunk_num = num;
+
+ writel(video_pkt_config.val, ®->VIDEO_PKT_CONFIG);
+}
+/*
+ * Write the null packet size - will only be taken into account when null
+ * packets are enabled.
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param size of null packet
+ * @return error code
+ */
+static void dsi_dpi_null_packet_size(struct dsi_context *ctx, u16 size)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xC0 video_nullpkt_size;
+
+ video_nullpkt_size.val = readl(®->VIDEO_NULLPKT_SIZE);
+ video_nullpkt_size.bits.video_nullpkt_size = size;
+
+ writel(video_nullpkt_size.val, ®->VIDEO_NULLPKT_SIZE);
+}
+/*
+ * Write video packet size. obligatory for sending video
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param size of video packet - containing information
+ * @return error code
+ */
+static void dsi_dpi_video_packet_size(struct dsi_context *ctx, u16 size)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x24 video_pkt_config;
+
+ video_pkt_config.val = readl(®->VIDEO_PKT_CONFIG);
+ video_pkt_config.bits.video_pkt_size = size;
+
+ writel(video_pkt_config.val, ®->VIDEO_PKT_CONFIG);
+}
+/*
+ * Specifiy the size of the packet memory write start/continue
+ * @param instance pointer to structure holding the DSI Host core information
+ * @ size of the packet
+ * @note when different than zero (0) eDPI is enabled
+ */
+static void dsi_edpi_max_pkt_size(struct dsi_context *ctx, u16 size)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xC4 dcs_wm_pkt_size;
+
+ dcs_wm_pkt_size.val = readl(®->DCS_WM_PKT_SIZE);
+ dcs_wm_pkt_size.bits.dcs_wm_pkt_size = size;
+
+ writel(dcs_wm_pkt_size.val, ®->DCS_WM_PKT_SIZE);
+}
+/*
+ * Enable tear effect acknowledge
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable (1) - disable (0)
+ */
+static void dsi_tear_effect_ack_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x68 cmd_mode_cfg;
+
+ cmd_mode_cfg.val = readl(®->CMD_MODE_CFG);
+ cmd_mode_cfg.bits.tear_fx_en = enable;
+
+ writel(cmd_mode_cfg.val, ®->CMD_MODE_CFG);
+}
+/*
+ * Enable packets acknowledge request after each packet transmission
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable (1) - disable (0)
+ */
+static void dsi_cmd_ack_request_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x68 cmd_mode_cfg;
+
+ cmd_mode_cfg.val = readl(®->CMD_MODE_CFG);
+ cmd_mode_cfg.bits.ack_rqst_en = enable;
+
+ writel(cmd_mode_cfg.val, ®->CMD_MODE_CFG);
+}
+/*
+ * Set DCS command packet transmission to transmission type
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_param of command
+ * @param lp transmit in low power
+ * @return error code
+ */
+static void dsi_cmd_mode_lp_cmd_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x68 cmd_mode_cfg;
+
+ cmd_mode_cfg.val = readl(®->CMD_MODE_CFG);
+
+ cmd_mode_cfg.bits.gen_sw_0p_tx = enable;
+ cmd_mode_cfg.bits.gen_sw_1p_tx = enable;
+ cmd_mode_cfg.bits.gen_sw_2p_tx = enable;
+ cmd_mode_cfg.bits.gen_lw_tx = enable;
+ cmd_mode_cfg.bits.dcs_sw_0p_tx = enable;
+ cmd_mode_cfg.bits.dcs_sw_1p_tx = enable;
+ cmd_mode_cfg.bits.dcs_lw_tx = enable;
+ cmd_mode_cfg.bits.max_rd_pkt_size = enable;
+
+ cmd_mode_cfg.bits.gen_sr_0p_tx = enable;
+ cmd_mode_cfg.bits.gen_sr_1p_tx = enable;
+ cmd_mode_cfg.bits.gen_sr_2p_tx = enable;
+ cmd_mode_cfg.bits.dcs_sr_0p_tx = enable;
+
+ writel(cmd_mode_cfg.val, ®->CMD_MODE_CFG);
+}
+/*
+ * Set DCS read command packet transmission to transmission type
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_param of command
+ * @param lp transmit in low power
+ * @return error code
+ */
+static void dsi_video_mode_lp_cmd_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(®->VID_MODE_CFG);
+ vid_mode_cfg.bits.lp_cmd_en = enable;
+
+ writel(vid_mode_cfg.val, ®->VID_MODE_CFG);
+}
+
+/*
+ * Write command header in the generic interface
+ * (which also sends DCS commands) as a subset
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param vc of destination
+ * @param packet_type (or type of DCS command)
+ * @param ls_byte (if DCS, it is the DCS command)
+ * @param ms_byte (only parameter of short DCS packet)
+ * @return error code
+ */
+static void dsi_set_packet_header(struct dsi_context *ctx,
+ u8 vc,
+ u8 type,
+ u8 wc_lsb,
+ u8 wc_msb)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x6C gen_hdr;
+
+ gen_hdr.bits.gen_dt = type;
+ gen_hdr.bits.gen_vc = vc;
+ gen_hdr.bits.gen_wc_lsbyte = wc_lsb;
+ gen_hdr.bits.gen_wc_msbyte = wc_msb;
+
+ writel(gen_hdr.val, ®->GEN_HDR);
+}
+/*
+ * Write the payload of the long packet commands
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param payload array of bytes of payload
+ * @return error code
+ */
+static void dsi_set_packet_payload(struct dsi_context *ctx, u32 payload)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(payload, ®->GEN_PLD_DATA);
+}
+/*
+ * Write the payload of the long packet commands
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param payload pointer to 32-bit array to hold read information
+ * @return error code
+ */
+static u32 dsi_get_rx_payload(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ return readl(®->GEN_PLD_DATA);
+}
+
+/*
+ * Enable Bus Turn-around request
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_bta_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(enable, ®->TA_EN);
+}
+/*
+ * Enable EOTp reception
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_eotp_rx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xBC eotp_en;
+
+ eotp_en.val = readl(®->EOTP_EN);
+ eotp_en.bits.rx_eotp_en = enable;
+
+ writel(eotp_en.val, ®->EOTP_EN);
+}
+/*
+ * Enable EOTp transmission
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_eotp_tx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xBC eotp_en;
+
+ eotp_en.val = readl(®->EOTP_EN);
+ eotp_en.bits.tx_eotp_en = enable;
+
+ writel(eotp_en.val, ®->EOTP_EN);
+}
+/*
+ * Enable ECC reception, error correction and reporting
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_ecc_rx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xB4 rx_pkt_check_config;
+
+ rx_pkt_check_config.val = readl(®->RX_PKT_CHECK_CONFIG);
+ rx_pkt_check_config.bits.rx_pkt_ecc_en = enable;
+
+ writel(rx_pkt_check_config.val, ®->RX_PKT_CHECK_CONFIG);
+}
+/*
+ * Enable CRC reception, error reporting
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ */
+static void dsi_crc_rx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xB4 rx_pkt_check_config;
+
+ rx_pkt_check_config.val = readl(®->RX_PKT_CHECK_CONFIG);
+ rx_pkt_check_config.bits.rx_pkt_crc_en = enable;
+
+ writel(rx_pkt_check_config.val, ®->RX_PKT_CHECK_CONFIG);
+}
+/*
+ * NOTE: dsi-ctrl-r1p0 only
+ *
+ * Get status of read command
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if busy
+ */
+static bool dsi_is_rdcmd_done(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_rdcmd_done;
+}
+/*
+ * Get the FULL status of generic read payload fifo
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if fifo full
+ */
+static bool dsi_is_rx_payload_fifo_full(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_rdata_fifo_full;
+}
+/*
+ * Get the EMPTY status of generic read payload fifo
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if fifo empty
+ */
+static bool dsi_is_rx_payload_fifo_empty(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_rdata_fifo_empty;
+}
+/*
+ * Get the FULL status of generic write payload fifo
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if fifo full
+ */
+static bool dsi_is_tx_payload_fifo_full(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_wdata_fifo_full;
+}
+/*
+ * Get the EMPTY status of generic write payload fifo
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if fifo empty
+ */
+static bool dsi_is_tx_payload_fifo_empty(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_wdata_fifo_empty;
+}
+/*
+ * Get the FULL status of generic command fifo
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if fifo full
+ */
+static bool dsi_is_tx_cmd_fifo_full(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_cmd_fifo_full;
+}
+/*
+ * Get the EMPTY status of generic command fifo
+ * @param instance pointer to structure holding the DSI Host core information
+ * @return 1 if fifo empty
+ */
+static bool dsi_is_tx_cmd_fifo_empty(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(®->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_cmd_fifo_empty;
+}
+
+/* only if DPI */
+/*
+ * DPI interface signal delay config
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle period for waiting after controller receiving HSYNC from
+ * DPI interface to start read pixel data from memory.
+ */
+static void dsi_dpi_sig_delay(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xD0 video_sig_delay_config;
+
+ video_sig_delay_config.val = readl(®->VIDEO_SIG_DELAY_CONFIG);
+ video_sig_delay_config.bits.video_sig_delay = byte_cycle;
+
+ writel(video_sig_delay_config.val, ®->VIDEO_SIG_DELAY_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch data lane from high speed to low power
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle
+ * @return error code
+ */
+static void dsi_datalane_hs2lp_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xAC phy_datalane_time_config;
+
+ phy_datalane_time_config.val = readl(®->PHY_DATALANE_TIME_CONFIG);
+ phy_datalane_time_config.bits.phy_datalane_hs_to_lp_time = byte_cycle;
+
+ writel(phy_datalane_time_config.val, ®->PHY_DATALANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch the data lane from to low power high speed
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle
+ * @return error code
+ */
+static void dsi_datalane_lp2hs_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xAC phy_datalane_time_config;
+
+ phy_datalane_time_config.val = readl(®->PHY_DATALANE_TIME_CONFIG);
+ phy_datalane_time_config.bits.phy_datalane_lp_to_hs_time = byte_cycle;
+
+ writel(phy_datalane_time_config.val, ®->PHY_DATALANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch clock lane from high speed to low power
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle
+ * @return error code
+ */
+static void dsi_clklane_hs2lp_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xA8 phy_clklane_time_config;
+
+ phy_clklane_time_config.val = readl(®->PHY_CLKLANE_TIME_CONFIG);
+ phy_clklane_time_config.bits.phy_clklane_hs_to_lp_time = byte_cycle;
+
+ writel(phy_clklane_time_config.val, ®->PHY_CLKLANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch clock lane from to low power high speed
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle
+ * @return error code
+ */
+static void dsi_clklane_lp2hs_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xA8 phy_clklane_time_config;
+
+ phy_clklane_time_config.val = readl(®->PHY_CLKLANE_TIME_CONFIG);
+ phy_clklane_time_config.bits.phy_clklane_lp_to_hs_time = byte_cycle;
+
+ writel(phy_clklane_time_config.val, ®->PHY_CLKLANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to turn the bus around to start receiving
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle
+ * @return error code
+ */
+static void dsi_max_read_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, ®->MAX_READ_TIME);
+}
+/*
+ * Enable the automatic mechanism to stop providing clock in the clock
+ * lane when time allows
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param enable
+ * @return error code
+ */
+static void dsi_nc_clk_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x74 phy_clk_lane_lp_ctrl;
+
+ phy_clk_lane_lp_ctrl.val = readl(®->PHY_CLK_LANE_LP_CTRL);
+ phy_clk_lane_lp_ctrl.bits.auto_clklane_ctrl_en = enable;
+
+ writel(phy_clk_lane_lp_ctrl.val, ®->PHY_CLK_LANE_LP_CTRL);
+}
+/*
+ * Write transmission escape timeout
+ * a safe guard so that the state machine would reset if transmission
+ * takes too long
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param div
+ */
+static void dsi_tx_escape_division(struct dsi_context *ctx, u8 div)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(div, ®->TX_ESC_CLK_CONFIG);
+}
+/* PRESP Time outs */
+/*
+ * configure timeout divisions (so they would have more clock ticks)
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param div no of hs cycles before transiting back to LP in
+ * (lane_clk / div)
+ */
+static void dsi_timeout_clock_division(struct dsi_context *ctx, u8 div)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(div, ®->TIMEOUT_CNT_CLK_CONFIG);
+}
+/*
+ * Configure the Low power receive time out
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle (of byte cycles)
+ */
+static void dsi_lp_rx_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, ®->LRX_H_TO_CONFIG);
+}
+/*
+ * Configure a high speed transmission time out
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param byte_cycle (byte cycles)
+ */
+static void dsi_hs_tx_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, ®->HTX_TO_CONFIG);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after bus turn around
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_byte_cycles period for which the DWC_mipi_dsi_host keeps the
+ * link still, after sending a BTA operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static void dsi_bta_presp_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, ®->BTA_PRESP_TO_CONFIG);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after LP data
+ * transmission write requests
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_byte_cycles period for which the DWC_mipi_dsi_host keeps the
+ * link still, after sending a low power write operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static void dsi_lp_write_presp_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, ®->LPWR_PRESP_TO_CONFIG);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after LP data
+ * transmission read requests
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_byte_cycles period for which the DWC_mipi_dsi_host keeps the
+ * link still, after sending a low power read operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static void dsi_lp_read_presp_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x4C rd_presp_to_config;
+
+ rd_presp_to_config.val = readl(®->RD_PRESP_TO_CONFIG);
+ rd_presp_to_config.bits.lprd_presp_to_cnt_limit = byte_cycle;
+
+ writel(rd_presp_to_config.val, ®->RD_PRESP_TO_CONFIG);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after HS data
+ * transmission write requests
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_byte_cycles period for which the DWC_mipi_dsi_host keeps the
+ * link still, after sending a high-speed write operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static void dsi_hs_write_presp_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x50 hswr_presp_to_config;
+
+ hswr_presp_to_config.val = readl(®->HSWR_PRESP_TO_CONFIG);
+ hswr_presp_to_config.bits.hswr_presp_to_cnt_limit = byte_cycle;
+
+ writel(hswr_presp_to_config.val, ®->HSWR_PRESP_TO_CONFIG);
+}
+/*
+ * Timeout for peripheral between HS data transmission read requests
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param no_of_byte_cycles period for which the DWC_mipi_dsi_host keeps the
+ * link still, after sending a high-speed read operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static void dsi_hs_read_presp_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x4C rd_presp_to_config;
+
+ rd_presp_to_config.val = readl(®->RD_PRESP_TO_CONFIG);
+ rd_presp_to_config.bits.hsrd_presp_to_cnt_limit = byte_cycle;
+
+ writel(rd_presp_to_config.val, ®->RD_PRESP_TO_CONFIG);
+}
+/*
+ * Get the error 0 interrupt register status
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param mask the mask to be read from the register
+ * @return error status 0 value
+ */
+static u32 dsi_int0_status(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x08 protocol_int_sts;
+
+ protocol_int_sts.val = readl(®->PROTOCOL_INT_STS);
+ writel(protocol_int_sts.val, ®->PROTOCOL_INT_CLR);
+
+ if (protocol_int_sts.bits.dphy_errors_0)
+ pr_err("dphy_err: escape entry error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_1)
+ pr_err("dphy_err: lp data transmission sync error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_2)
+ pr_err("dphy_err: control error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_3)
+ pr_err("dphy_err: LP0 contention error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_4)
+ pr_err("dphy_err: LP1 contention error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_0)
+ pr_err("ack_err: SoT error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_1)
+ pr_err("ack_err: SoT Sync error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_2)
+ pr_err("ack_err: EoT Sync error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_3)
+ pr_err("ack_err: Escape Mode Entry Command error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_4)
+ pr_err("ack_err: LP Transmit Sync error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_5)
+ pr_err("ack_err: Peripheral Timeout error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_6)
+ pr_err("ack_err: False Control error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_7)
+ pr_err("ack_err: reserved (specific to device)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_8)
+ pr_err("ack_err: ECC error, single-bit (corrected)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_9)
+ pr_err("ack_err: ECC error, multi-bit (not corrected)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_10)
+ pr_err("ack_err: checksum error (long packet only)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_11)
+ pr_err("ack_err: not recognized DSI data type\n");
+
+ if (protocol_int_sts.bits.ack_with_err_12)
+ pr_err("ack_err: DSI VC ID Invalid\n");
+
+ if (protocol_int_sts.bits.ack_with_err_13)
+ pr_err("ack_err: invalid transmission length\n");
+
+ if (protocol_int_sts.bits.ack_with_err_14)
+ pr_err("ack_err: reserved (specific to device)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_15)
+ pr_err("ack_err: DSI protocol violation\n");
+
+ return 0;
+}
+/*
+ * Get the error 1 interrupt register status
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param mask the mask to be read from the register
+ * @return error status 1 value
+ */
+static u32 dsi_int1_status(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x10 internal_int_sts;
+ u32 status = 0;
+
+ internal_int_sts.val = readl(®->INTERNAL_INT_STS);
+ writel(internal_int_sts.val, ®->INTERNAL_INT_CLR);
+
+ if (internal_int_sts.bits.receive_pkt_size_err)
+ pr_err("receive packet size error\n");
+
+ if (internal_int_sts.bits.eotp_not_receive_err)
+ pr_err("EoTp packet is not received\n");
+
+ if (internal_int_sts.bits.gen_cmd_cmd_fifo_wr_err)
+ pr_err("cmd header-fifo is full\n");
+
+ if (internal_int_sts.bits.gen_cmd_rdata_fifo_rd_err)
+ pr_err("cmd read-payload-fifo is empty\n");
+
+ if (internal_int_sts.bits.gen_cmd_rdata_fifo_wr_err)
+ pr_err("cmd read-payload-fifo is full\n");
+
+ if (internal_int_sts.bits.gen_cmd_wdata_fifo_wr_err)
+ pr_err("cmd write-payload-fifo is full\n");
+
+ if (internal_int_sts.bits.gen_cmd_wdata_fifo_rd_err)
+ pr_err("cmd write-payload-fifo is empty\n");
+
+ if (internal_int_sts.bits.dpi_pix_fifo_wr_err) {
+ pr_err("DPI pixel-fifo is full\n");
+ status |= DSI_INT_STS_NEED_SOFT_RESET;
+ }
+
+ if (internal_int_sts.bits.ecc_single_err)
+ pr_err("ECC single error in a received packet\n");
+
+ if (internal_int_sts.bits.ecc_multi_err)
+ pr_err("ECC multiple error in a received packet\n");
+
+ if (internal_int_sts.bits.crc_err)
+ pr_err("CRC error in the received packet payload\n");
+
+ if (internal_int_sts.bits.hs_tx_timeout)
+ pr_err("high-speed transmission timeout\n");
+
+ if (internal_int_sts.bits.lp_rx_timeout)
+ pr_err("low-power reception timeout\n");
+
+ return status;
+}
+/*
+ * Get the error 1 interrupt register status
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param mask the mask to be read from the register
+ * @return error status 1 value
+ */
+static u32 dsi_int2_status(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ if (readl(®->INT_PLL_STS))
+ pr_err("pll interrupt\n");
+
+ return 0;
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 0 source
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param mask to be written to the register
+ */
+static void dsi_int0_mask(struct dsi_context *ctx, u32 mask)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(mask, ®->MASK_PROTOCOL_INT);
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 1 source
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param mask the mask to be written to the register
+ */
+static void dsi_int1_mask(struct dsi_context *ctx, u32 mask)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(mask, ®->MASK_INTERNAL_INT);
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 2 source
+ * @param instance pointer to structure holding the DSI Host core information
+ * @param mask the mask to be written to the register
+ */
+static void dsi_int2_mask(struct dsi_context *ctx, u32 mask)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(mask, ®->INT_PLL_MSK);
+}
+
+struct dsi_core_ops dsi_ctrl_r1p0_ops = {
+ .check_version = dsi_check_version,
+ .power_en = dsi_power_enable,
+ .video_mode = dsi_video_mode,
+ .cmd_mode = dsi_cmd_mode,
+ .is_cmd_mode = dsi_is_cmd_mode,
+ .rx_vcid = dsi_rx_vcid,
+ .video_vcid = dsi_video_vcid,
+ .dpi_video_burst_mode = dsi_dpi_video_burst_mode,
+ .dpi_color_coding = dsi_dpi_color_coding,
+ .dpi_18_loosely_packet_en = dsi_dpi_18_loosely_packet_en,
+ .dpi_sig_delay = dsi_dpi_sig_delay,
+ .dpi_hline_time = dsi_dpi_hline_time,
+ .dpi_hsync_time = dsi_dpi_hsync_time,
+ .dpi_hbp_time = dsi_dpi_hbp_time,
+ .dpi_vact = dsi_dpi_vact,
+ .dpi_vfp = dsi_dpi_vfp,
+ .dpi_vbp = dsi_dpi_vbp,
+ .dpi_vsync = dsi_dpi_vsync,
+ .dpi_hporch_lp_en = dsi_dpi_hporch_lp_en,
+ .dpi_vporch_lp_en = dsi_dpi_vporch_lp_en,
+ .dpi_frame_ack_en = dsi_dpi_frame_ack_en,
+ .dpi_chunk_num = dsi_dpi_chunk_num,
+ .dpi_null_packet_size = dsi_dpi_null_packet_size,
+ .dpi_video_packet_size = dsi_dpi_video_packet_size,
+ .edpi_max_pkt_size = dsi_edpi_max_pkt_size,
+ .tear_effect_ack_en = dsi_tear_effect_ack_en,
+ .cmd_ack_request_en = dsi_cmd_ack_request_en,
+ .cmd_mode_lp_cmd_en = dsi_cmd_mode_lp_cmd_en,
+ .video_mode_lp_cmd_en = dsi_video_mode_lp_cmd_en,
+ .set_packet_header = dsi_set_packet_header,
+ .set_packet_payload = dsi_set_packet_payload,
+ .get_rx_payload = dsi_get_rx_payload,
+ .bta_en = dsi_bta_en,
+ .eotp_rx_en = dsi_eotp_rx_en,
+ .eotp_tx_en = dsi_eotp_tx_en,
+ .ecc_rx_en = dsi_ecc_rx_en,
+ .crc_rx_en = dsi_crc_rx_en,
+ .is_bta_returned = dsi_is_rdcmd_done,
+ .is_rx_payload_fifo_full = dsi_is_rx_payload_fifo_full,
+ .is_rx_payload_fifo_empty = dsi_is_rx_payload_fifo_empty,
+ .is_tx_payload_fifo_full = dsi_is_tx_payload_fifo_full,
+ .is_tx_payload_fifo_empty = dsi_is_tx_payload_fifo_empty,
+ .is_tx_cmd_fifo_full = dsi_is_tx_cmd_fifo_full,
+ .is_tx_cmd_fifo_empty = dsi_is_tx_cmd_fifo_empty,
+ .datalane_hs2lp_config = dsi_datalane_hs2lp_config,
+ .datalane_lp2hs_config = dsi_datalane_lp2hs_config,
+ .clklane_hs2lp_config = dsi_clklane_hs2lp_config,
+ .clklane_lp2hs_config = dsi_clklane_lp2hs_config,
+ .max_read_time = dsi_max_read_time,
+ .nc_clk_en = dsi_nc_clk_en,
+ .tx_escape_division = dsi_tx_escape_division,
+ .timeout_clock_division = dsi_timeout_clock_division,
+ .lp_rx_timeout = dsi_lp_rx_timeout,
+ .hs_tx_timeout = dsi_hs_tx_timeout,
+ .bta_presp_timeout = dsi_bta_presp_timeout,
+ .lp_write_presp_timeout = dsi_lp_write_presp_timeout,
+ .lp_read_presp_timeout = dsi_lp_read_presp_timeout,
+ .hs_write_presp_timeout = dsi_hs_write_presp_timeout,
+ .hs_read_presp_timeout = dsi_hs_read_presp_timeout,
+ .int0_status = dsi_int0_status,
+ .int1_status = dsi_int1_status,
+ .int2_status = dsi_int2_status,
+ .int0_mask = dsi_int0_mask,
+ .int1_mask = dsi_int1_mask,
+ .int2_mask = dsi_int2_mask,
+};
diff --git a/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.h b/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.h
new file mode 100644
index 0000000..ede010b
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0.h
@@ -0,0 +1,1417 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#ifndef _MIPI_DSI_R1P0_H_
+#define _MIPI_DSI_R1P0_H_
+
+#include <asm/types.h>
+
+struct dsi_reg {
+ union _0x00 {
+ u32 val;
+ struct _DSI_VERSION {
+ u32 dsi_version: 16;
+ u32 reserved: 16;
+ } bits;
+ } DSI_VERSION;
+
+ union _0x04 {
+ u32 val;
+ struct _SOFT_RESET {
+ /*
+ * This bit configures the core either to work normal or to
+ * reset. It's default value is 0. After the core configur-
+ * ation, to enable the mipi_dsi_host, set this register to 1.
+ * 1: power up 0: reset core
+ */
+ u32 dsi_soft_reset: 1;
+
+ u32 reserved: 31;
+ } bits;
+ } SOFT_RESET;
+
+ union _0x08 {
+ u32 val;
+ struct _PROTOCOL_INT_STS {
+ /* ErrEsc escape entry error from Lane 0 */
+ u32 dphy_errors_0: 1;
+
+ /* ErrSyncEsc low-power data transmission synchronization
+ * error from Lane 0
+ */
+ u32 dphy_errors_1: 1;
+
+ /* ErrControl error from Lane 0 */
+ u32 dphy_errors_2: 1;
+
+ /* ErrContentionLP0 LP0 contention error from Lane 0 */
+ u32 dphy_errors_3: 1;
+
+ /* ErrContentionLP1 LP1 contention error from Lane 0 */
+ u32 dphy_errors_4: 1;
+
+ /* debug mode protocol errors */
+ u32 protocol_debug_err: 11;
+
+ /* SoT error from the Acknowledge error report */
+ u32 ack_with_err_0: 1;
+
+ /* SoT Sync error from the Acknowledge error report */
+ u32 ack_with_err_1: 1;
+
+ /* EoT Sync error from the Acknowledge error report */
+ u32 ack_with_err_2: 1;
+
+ /* Escape Mode Entry Command error from the Acknowledge
+ * error report
+ */
+ u32 ack_with_err_3: 1;
+
+ /* LP Transmit Sync error from the Acknowledge error report */
+ u32 ack_with_err_4: 1;
+
+ /* Peripheral Timeout error from the Acknowledge error report */
+ u32 ack_with_err_5: 1;
+
+ /* False Control error from the Acknowledge error report */
+ u32 ack_with_err_6: 1;
+
+ /* reserved (specific to device) from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_7: 1;
+
+ /* ECC error, single-bit (detected and corrected) from the
+ * Acknowledge error report
+ */
+ u32 ack_with_err_8: 1;
+
+ /* ECC error, multi-bit (detected, not corrected) from the
+ * Acknowledge error report
+ */
+ u32 ack_with_err_9: 1;
+
+ /* checksum error (long packet only) from the Acknowledge
+ * error report
+ */
+ u32 ack_with_err_10: 1;
+
+ /* not recognized DSI data type from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_11: 1;
+
+ /* DSI VC ID Invalid from the Acknowledge error report */
+ u32 ack_with_err_12: 1;
+
+ /* invalid transmission length from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_13: 1;
+
+ /* reserved (specific to device) from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_14: 1;
+
+ /* DSI protocol violation from the Acknowledge error report */
+ u32 ack_with_err_15: 1;
+
+ } bits;
+ } PROTOCOL_INT_STS;
+
+ union _0x0C {
+ u32 val;
+ struct _MASK_PROTOCOL_INT {
+ u32 mask_dphy_errors_0: 1;
+ u32 mask_dphy_errors_1: 1;
+ u32 mask_dphy_errors_2: 1;
+ u32 mask_dphy_errors_3: 1;
+ u32 mask_dphy_errors_4: 1;
+ u32 mask_protocol_debug_err: 11;
+ u32 mask_ack_with_err_0: 1;
+ u32 mask_ack_with_err_1: 1;
+ u32 mask_ack_with_err_2: 1;
+ u32 mask_ack_with_err_3: 1;
+ u32 mask_ack_with_err_4: 1;
+ u32 mask_ack_with_err_5: 1;
+ u32 mask_ack_with_err_6: 1;
+ u32 mask_ack_with_err_7: 1;
+ u32 mask_ack_with_err_8: 1;
+ u32 mask_ack_with_err_9: 1;
+ u32 mask_ack_with_err_10: 1;
+ u32 mask_ack_with_err_11: 1;
+ u32 mask_ack_with_err_12: 1;
+ u32 mask_ack_with_err_13: 1;
+ u32 mask_ack_with_err_14: 1;
+ u32 mask_ack_with_err_15: 1;
+ } bits;
+ } MASK_PROTOCOL_INT;
+
+ union _0x10 {
+ u32 val;
+ struct _INTERNAL_INT_STS {
+ /* This bit indicates that the packet size error is detected
+ * during the packet reception.
+ */
+ u32 receive_pkt_size_err: 1;
+
+ /* This bit indicates that the EoTp packet is not received at
+ * the end of the incoming peripheral transmission
+ */
+ u32 eotp_not_receive_err: 1;
+
+ /* This bit indicates that the system tried to write a command
+ * through the Generic interface and the FIFO is full. There-
+ * fore, the command is not written.
+ */
+ u32 gen_cmd_cmd_fifo_wr_err: 1;
+
+ /* This bit indicates that during a DCS read data, the payload
+ * FIFO becomes empty and the data sent to the interface is
+ * corrupted.
+ */
+ u32 gen_cmd_rdata_fifo_rd_err: 1;
+
+ /* This bit indicates that during a generic interface packet
+ * read back, the payload FIFO becomes full and the received
+ * data is corrupted.
+ */
+ u32 gen_cmd_rdata_fifo_wr_err: 1;
+
+ /* This bit indicates that the system tried to write a payload
+ * data through the Generic interface and the FIFO is full.
+ * Therefore, the payload is not written.
+ */
+ u32 gen_cmd_wdata_fifo_wr_err: 1;
+
+ /* This bit indicates that during a Generic interface packet
+ * build, the payload FIFO becomes empty and corrupt data is
+ * sent.
+ */
+ u32 gen_cmd_wdata_fifo_rd_err: 1;
+
+ /* This bit indicates that during a DPI pixel line storage,
+ * the payload FIFO becomes full and the data stored is
+ * corrupted.
+ */
+ u32 dpi_pix_fifo_wr_err: 1;
+
+ /* internal debug error */
+ u32 internal_debug_err: 19;
+
+ /* This bit indicates that the ECC single error is detected
+ * and corrected in a received packet.
+ */
+ u32 ecc_single_err: 1;
+
+ /* This bit indicates that the ECC multiple error is detected
+ * in a received packet.
+ */
+ u32 ecc_multi_err: 1;
+
+ /* This bit indicates that the CRC error is detected in the
+ * received packet payload.
+ */
+ u32 crc_err: 1;
+
+ /* This bit indicates that the high-speed transmission timeout
+ * counter reached the end and contention is detected.
+ */
+ u32 hs_tx_timeout: 1;
+
+ /* This bit indicates that the low-power reception timeout
+ * counter reached the end and contention is detected.
+ */
+ u32 lp_rx_timeout: 1;
+
+ } bits;
+ } INTERNAL_INT_STS;
+
+ union _0x14 {
+ u32 val;
+ struct _MASK_INTERNAL_INT {
+ u32 mask_receive_pkt_size_err: 1;
+ u32 mask_eopt_not_receive_err: 1;
+ u32 mask_gen_cmd_cmd_fifo_wr_err: 1;
+ u32 mask_gen_cmd_rdata_fifo_rd_err: 1;
+ u32 mask_gen_cmd_rdata_fifo_wr_err: 1;
+ u32 mask_gen_cmd_wdata_fifo_wr_err: 1;
+ u32 mask_gen_cmd_wdata_fifo_rd_err: 1;
+ u32 mask_dpi_pix_fifo_wr_err: 1;
+ u32 mask_internal_debug_err: 19;
+ u32 mask_ecc_single_err: 1;
+ u32 mask_ecc_multi_err: 1;
+ u32 mask_crc_err: 1;
+ u32 mask_hs_tx_timeout: 1;
+ u32 mask_lp_rx_timeout: 1;
+ } bits;
+ } MASK_INTERNAL_INT;
+
+ union _0x18 {
+ u32 val;
+ struct _DSI_MODE_CFG {
+ /* This bit configures the operation mode
+ * 0: Video mode ; 1: Command mode
+ */
+ u32 cmd_video_mode: 1;
+
+ u32 reserved: 31;
+
+ } bits;
+ } DSI_MODE_CFG;
+
+ union _0x1C {
+ u32 val;
+ struct _VIRTUAL_CHANNEL_ID {
+ /* This field indicates the Generic interface read-back
+ * virtual channel identification
+ */
+ u32 gen_rx_vcid: 2;
+
+ /* This field configures the DPI virtual channel id that
+ * is indexed to the VIDEO mode packets
+ */
+ u32 video_pkt_vcid: 2;
+
+ u32 reserved: 28;
+
+ } bits;
+ } VIRTUAL_CHANNEL_ID;
+
+ union _0x20 {
+ u32 val;
+ struct _DPI_VIDEO_FORMAT {
+ /*
+ * This field configures the DPI color coding as follows:
+ * 0000: 16-bit configuration 1
+ * 0001: 16-bit configuration 2
+ * 0010: 16-bit configuration 3
+ * 0011: 18-bit configuration 1
+ * 0100: 18-bit configuration 2
+ * 0101: 24-bit
+ * 0110: 20-bit YCbCr 4:2:2 loosely packed
+ * 0111: 24-bit YCbCr 4:2:2
+ * 1000: 16-bit YCbCr 4:2:2
+ * 1001: 30-bit
+ * 1010: 36-bit
+ * 1011: 12-bit YCbCr 4:2:0
+ * 1100: Compression Display Stream
+ * 1101-1111: 12-bit YCbCr 4:2:0
+ */
+ u32 dpi_video_mode_format: 6;
+
+ /* When set to 1, this bit activates loosely packed
+ * variant to 18-bit configurations
+ */
+ u32 loosely18_en: 1;
+
+ u32 reserved: 25;
+
+ } bits;
+ } DPI_VIDEO_FORMAT;
+
+ union _0x24 {
+ u32 val;
+ struct _VIDEO_PKT_CONFIG {
+ /*
+ * This field configures the number of pixels in a single
+ * video packet. For 18-bit not loosely packed data types,
+ * this number must be a multiple of 4. For YCbCr data
+ * types, it must be a multiple of 2, as described in the
+ * DSI specification.
+ */
+ u32 video_pkt_size: 16;
+
+ /*
+ * This register configures the number of chunks to be
+ * transmitted during a Line period (a chunk consists of
+ * a video packet and a null packet). If set to 0 or 1,
+ * the video line is transmitted in a single packet. If
+ * set to 1, the packet is part of a chunk, so a null packet
+ * follows it if vid_null_size > 0. Otherwise, multiple chunks
+ * are used to transmit each video line.
+ */
+ u32 video_line_chunk_num: 16;
+
+ } bits;
+ } VIDEO_PKT_CONFIG;
+
+ union _0x28 {
+ u32 val;
+ struct _VIDEO_LINE_HBLK_TIME {
+ /* This field configures the Horizontal Back Porch period
+ * in lane byte clock cycles
+ */
+ u32 video_line_hbp_time: 16;
+
+ /* This field configures the Horizontal Synchronism Active
+ * period in lane byte clock cycles
+ */
+ u32 video_line_hsa_time: 16;
+
+ } bits;
+ } VIDEO_LINE_HBLK_TIME;
+
+ union _0x2C {
+ u32 val;
+ struct _VIDEO_LINE_TIME {
+ /* This field configures the size of the total line time
+ * (HSA+HBP+HACT+HFP) counted in lane byte clock cycles
+ */
+ u32 video_line_time: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } VIDEO_LINE_TIME;
+
+ union _0x30 {
+ u32 val;
+ struct _VIDEO_VBLK_LINES {
+ /* This field configures the Vertical Front Porch period
+ * measured in number of horizontal lines
+ */
+ u32 vfp_lines: 10;
+
+ /* This field configures the Vertical Back Porch period
+ * measured in number of horizontal lines
+ */
+ u32 vbp_lines: 10;
+
+ /* This field configures the Vertical Synchronism Active
+ * period measured in number of horizontal lines
+ */
+ u32 vsa_lines: 10;
+
+ u32 reserved: 2;
+
+ } bits;
+ } VIDEO_VBLK_LINES;
+
+ union _0x34 {
+ u32 val;
+ struct _VIDEO_VACTIVE_LINES {
+ /* This field configures the Vertical Active period measured
+ * in number of horizontal lines
+ */
+ u32 vactive_lines: 14;
+
+ u32 reserved: 18;
+
+ } bits;
+ } VIDEO_VACTIVE_LINES;
+
+ union _0x38 {
+ u32 val;
+ struct _VID_MODE_CFG {
+ /*
+ * This field indicates the video mode transmission type as
+ * follows:
+ * 00: Non-burst with sync pulses
+ * 01: Non-burst with sync events
+ * 10 and 11: Burst mode
+ */
+ u32 vid_mode_type: 2;
+
+ u32 reserved_0: 6;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VSA period when timing allows.
+ */
+ u32 lp_vsa_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VBP period when timing allows.
+ */
+ u32 lp_vbp_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VFP period when timing allows.
+ */
+ u32 lp_vfp_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VACT period when timing allows.
+ */
+ u32 lp_vact_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the HBP period when timing allows.
+ */
+ u32 lp_hbp_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the HFP period when timing allows.
+ */
+ u32 lp_hfp_en: 1;
+
+ /* When set to 1, this bit enables the request for an ack-
+ * nowledge response at the end of a frame.
+ */
+ u32 frame_bta_ack_en: 1;
+
+ /* When set to 1, this bit enables the command transmission
+ * only in low-power mode.
+ */
+ u32 lp_cmd_en: 1;
+
+ u32 reserved_1: 16;
+
+ } bits;
+ } VID_MODE_CFG;
+
+ union _0x3C {
+ u32 val;
+ struct _SDF_MODE_CONFIG {
+ /*
+ * This field defines the 3D mode on/off & display orientation:
+ * 00: 3D mode off (2D mode on)
+ * 01: 3D mode on, portrait orientation
+ * 10: 3D mode on, landscape orientation
+ * 11: Reserved
+ */
+ u32 rf_3d_mode: 2;
+
+ /*
+ * This field defines the 3D image format:
+ * 00: Line (alternating lines of left and right data)
+ * 01: Frame (alternating frames of left and right data)
+ * 10: Pixel (alternating pixels of left and right data)
+ * 11: Reserved
+ */
+ u32 rf_3d_format: 2;
+
+ /*
+ * This field defines whether there is a second VSYNC pulse
+ * between Left and Right Images, when 3D Image Format is
+ * Frame-based:
+ * 0: No sync pulses between left and right data
+ * 1: Sync pulse (HSYNC, VSYNC, blanking) between left and
+ * right data
+ */
+ u32 second_vsync_en: 1;
+
+ /*
+ * This bit defines the left or right order:
+ * 0: Left eye data is sent first, and then the right eye data
+ * is sent.
+ * 1: Right eye data is sent first, and then the left eye data
+ * is sent.
+ */
+ u32 left_right_order: 1;
+
+ u32 reserved_0: 2;
+
+ /*
+ * When set, causes the next VSS packet to include 3D control
+ * payload in every VSS packet.
+ */
+ u32 rf_3d_payload_en: 1;
+
+ u32 reserved_1: 23;
+
+ } bits;
+ } SDF_MODE_CONFIG;
+
+ union _0x40 {
+ u32 val;
+ struct _TIMEOUT_CNT_CLK_CONFIG {
+ /*
+ * This field indicates the division factor for the Time Out
+ * clock used as the timing unit in the configuration of HS to
+ * LP and LP to HS transition error.
+ */
+ u32 timeout_cnt_clk_config: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } TIMEOUT_CNT_CLK_CONFIG;
+
+ union _0x44 {
+ u32 val;
+ struct _HTX_TO_CONFIG {
+ /*
+ * This field configures the timeout counter that triggers
+ * a high speed transmission timeout contention detection
+ * (measured in TO_CLK_DIVISION cycles).
+ *
+ * If using the non-burst mode and there is no sufficient
+ * time to switch from HS to LP and back in the period which
+ * is from one line data finishing to the next line sync
+ * start, the DSI link returns the LP state once per frame,
+ * then you should configure the TO_CLK_DIVISION and
+ * hstx_to_cnt to be in accordance with:
+ * hstx_to_cnt * lanebyteclkperiod * TO_CLK_DIVISION >= the
+ * time of one FRAME data transmission * (1 + 10%)
+ *
+ * In burst mode, RGB pixel packets are time-compressed,
+ * leaving more time during a scan line. Therefore, if in
+ * burst mode and there is sufficient time to switch from HS
+ * to LP and back in the period of time from one line data
+ * finishing to the next line sync start, the DSI link can
+ * return LP mode and back in this time interval to save power.
+ * For this, configure the TO_CLK_DIVISION and hstx_to_cnt
+ * to be in accordance with:
+ * hstx_to_cnt * lanebyteclkperiod * TO_CLK_DIVISION >= the
+ * time of one LINE data transmission * (1 + 10%)
+ */
+ u32 htx_to_cnt_limit: 32;
+ } bits;
+ } HTX_TO_CONFIG;
+
+ union _0x48 {
+ u32 val;
+ struct _LRX_H_TO_CONFIG {
+ /*
+ * This field configures the timeout counter that triggers
+ * a low-power reception timeout contention detection (measured
+ * in TO_CLK_DIVISION cycles).
+ */
+ u32 lrx_h_to_cnt_limit: 32;
+ } bits;
+ } LRX_H_TO_CONFIG;
+
+ union _0x4C {
+ u32 val;
+ struct _RD_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after sending a low-power read oper-
+ * ation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 lprd_presp_to_cnt_limit: 16;
+
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after sending a high-speed read oper-
+ * ation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 hsrd_presp_to_cnt_limit: 16;
+
+ } bits;
+ } RD_PRESP_TO_CONFIG;
+
+ union _0x50 {
+ u32 val;
+ struct _HSWR_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link inactive after sending a high-speed write
+ * operation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 hswr_presp_to_cnt_limit: 16;
+
+ u32 reserved_0: 8;
+
+ /*
+ * When set to 1, this bit ensures that the peripheral response
+ * timeout caused by hs_wr_to_cnt is used only once per eDPI
+ * frame, when both the following conditions are met:
+ * dpivsync_edpiwms has risen and fallen.
+ * Packets originated from eDPI have been transmitted and its
+ * FIFO is empty again In this scenario no non-eDPI requests
+ * are sent to the D-PHY, even if there is traffic from generic
+ * or DBI ready to be sent, making it return to stop state.
+ * When it does so, PRESP_TO counter is activated and only when
+ * it finishes does the controller send any other traffic that
+ * is ready.
+ */
+ u32 hswr_presp_to_mode: 1;
+
+ u32 reserved_1: 7;
+
+ } bits;
+ } HSWR_PRESP_TO_CONFIG;
+
+ union _0x54 {
+ u32 val;
+ struct _LPWR_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after sending a low-power write oper-
+ * ation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 lpwr_presp_to_cnt_limit: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } LPWR_PRESP_TO_CONFIG;
+
+ union _0x58 {
+ u32 val;
+ struct _BTA_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after completing a Bus Turn-Around.
+ * This period is measured in cycles of lanebyteclk. The
+ * counting starts when the D-PHY enters the Stop state and
+ * causes no interrupts.
+ */
+ u32 bta_presp_to_cnt_limit: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } BTA_PRESP_TO_CONFIG;
+
+ union _0x5C {
+ u32 val;
+ struct _TX_ESC_CLK_CONFIG {
+ /*
+ * This field indicates the division factor for the TX Escape
+ * clock source (lanebyteclk). The values 0 and 1 stop the
+ * TX_ESC clock generation.
+ */
+ u32 tx_esc_clk_config: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } TX_ESC_CLK_CONFIG;
+
+ union _0x60 {
+ u32 val;
+ struct _VACT_CMD_TRANS_LIMIT {
+ /*
+ * This field is used for the transmission of commands in
+ * low-power mode. It defines the size, in bytes, of the
+ * largest packet that can fit in a line during the VACT
+ * region.
+ */
+ u32 vact_cmd_trans_limit: 8;
+
+ u32 reserved: 24;
+
+ } bits;
+ } VACT_CMD_TRANS_LIMIT;
+
+ union _0x64 {
+ u32 val;
+ struct _VBLK_CMD_TRANS_LIMIT {
+ /*
+ * This field is used for the transmission of commands in
+ * low-power mode. It defines the size, in bytes, of the
+ * largest packet that can fit in a line during the VSA, VBP,
+ * and VFP regions.
+ */
+ u32 vblk_cmd_trans_limit: 8;
+
+ u32 reserved: 24;
+
+ } bits;
+ } VBLK_CMD_TRANS_LIMIT;
+
+ union _0x68 {
+ u32 val;
+ struct _CMD_MODE_CFG {
+ /*
+ * When set to 1, this bit enables the tearing effect
+ * acknowledge request.
+ */
+ u32 tear_fx_en: 1;
+
+ /*
+ * When set to 1, this bit enables the acknowledge request
+ * after each packet transmission.
+ */
+ u32 ack_rqst_en: 1;
+
+ u32 reserved_0: 3;
+
+ u32 pps_tx: 1;
+ u32 exq_tx: 1;
+ u32 cmc_tx: 1;
+
+ /*
+ * This bit configures the Generic short write packet with
+ * zero parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sw_0p_tx: 1;
+
+ /*
+ * This bit configures the Generic short write packet with
+ * one parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sw_1p_tx: 1;
+
+ /*
+ * This bit configures the Generic short write packet with
+ * two parameters command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sw_2p_tx: 1;
+
+ /*
+ * This bit configures the Generic short read packet with
+ * zero parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sr_0p_tx: 1;
+
+ /*
+ * This bit configures the Generic short read packet with
+ * one parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sr_1p_tx: 1;
+
+ /*
+ * This bit configures the Generic short read packet with
+ * two parameters command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sr_2p_tx: 1;
+
+ /*
+ * This bit configures the Generic long write packet command
+ * transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_lw_tx: 1;
+
+ u32 reserved_1: 1;
+
+ /*
+ * This bit configures the DCS short write packet with zero
+ * parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_sw_0p_tx: 1;
+
+ /*
+ * This bit configures the DCS short write packet with one
+ * parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_sw_1p_tx: 1;
+
+ /*
+ * This bit configures the DCS short read packet with zero
+ * parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_sr_0p_tx: 1;
+
+ /*
+ * This bit configures the DCS long write packet command
+ * transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_lw_tx: 1;
+
+ u32 reserved_2: 4;
+
+ /*
+ * This bit configures the maximum read packet size command
+ * transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 max_rd_pkt_size: 1;
+
+ u32 reserved_3: 7;
+
+ } bits;
+ } CMD_MODE_CFG;
+
+ union _0x6C {
+ u32 val;
+ struct _GEN_HDR {
+ /*
+ * This field configures the packet data type of the header
+ * packet.
+ */
+ u32 gen_dt: 6;
+
+ /*
+ * This field configures the virtual channel id of the header
+ * packet.
+ */
+ u32 gen_vc: 2;
+
+ /*
+ * This field configures the least significant byte of the
+ * header packet's Word count for long packets or data 0 for
+ * short packets.
+ */
+ u32 gen_wc_lsbyte: 8;
+
+ /*
+ * This field configures the most significant byte of the
+ * header packet's word count for long packets or data 1 for
+ * short packets.
+ */
+ u32 gen_wc_msbyte: 8;
+
+ u32 reserved: 8;
+
+ } bits;
+ } GEN_HDR;
+
+ union _0x70 {
+ u32 val;
+ struct _GEN_PLD_DATA {
+ /* This field indicates byte 1 of the packet payload. */
+ u32 gen_pld_b1: 8;
+
+ /* This field indicates byte 2 of the packet payload. */
+ u32 gen_pld_b2: 8;
+
+ /* This field indicates byte 3 of the packet payload. */
+ u32 gen_pld_b3: 8;
+
+ /* This field indicates byte 4 of the packet payload. */
+ u32 gen_pld_b4: 8;
+
+ } bits;
+ } GEN_PLD_DATA;
+
+ union _0x74 {
+ u32 val;
+ struct _PHY_CLK_LANE_LP_CTRL {
+ /* This bit controls the D-PHY PPI txrequestclkhs signal */
+ u32 phy_clklane_tx_req_hs: 1;
+
+ /* This bit enables the automatic mechanism to stop providing
+ * clock in the clock lane when time allows.
+ */
+ u32 auto_clklane_ctrl_en: 1;
+
+ u32 reserved: 30;
+ } bits;
+ } PHY_CLK_LANE_LP_CTRL;
+
+ union _0x78 {
+ u32 val;
+ struct _PHY_INTERFACE_CTRL {
+ /* When set to 0, this bit places the D-PHY macro in power-
+ * down state.
+ */
+ u32 rf_phy_shutdown: 1;
+
+ /* When set to 0, this bit places the digital section of the
+ * D-PHY in the reset state.
+ */
+ u32 rf_phy_reset_n: 1;
+
+ /* When set to 1, this bit enables the D-PHY Clock Lane
+ * module.
+ */
+ u32 rf_phy_clk_en: 1;
+
+ /* When the D-PHY is in ULPS, this bit enables the D-PHY PLL. */
+ u32 rf_phy_force_pll: 1;
+
+ /* ULPS mode Request on clock lane */
+ u32 rf_phy_clk_txrequlps: 1;
+
+ /* ULPS mode Exit on clock lane */
+ u32 rf_phy_clk_txexitulps: 1;
+
+ /* ULPS mode Request on all active data lanes */
+ u32 rf_phy_data_txrequlps: 1;
+
+ /* ULPS mode Exit on all active data lanes */
+ u32 rf_phy_data_txexitulps: 1;
+
+ u32 reserved: 24;
+ } bits;
+ } PHY_INTERFACE_CTRL;
+
+ union _0x7C {
+ u32 val;
+ struct _PHY_TX_TRIGGERS {
+ /* This field controls the trigger transmissions. */
+ u32 phy_tx_triggers: 4;
+
+ u32 reserved: 28;
+ } bits;
+ } PHY_TX_TRIGGERS;
+
+ union _0x80 {
+ u32 val;
+ struct _DESKEW_START {
+ u32 deskew_start: 1;
+ u32 reserved: 31;
+ } bits;
+ } DESKEW_START;
+
+ union _0x84 {
+ u32 val;
+ struct _DESKEW_MODE {
+ u32 deskew_mode: 2;
+ u32 reserved: 30;
+ } bits;
+ } DESKEW_MODE;
+
+ union _0x88 {
+ u32 val;
+ struct _DESKEW_TIME {
+ u32 deskew_time: 32;
+ } bits;
+ } DESKEW_TIME;
+
+ union _0x8C {
+ u32 val;
+ struct _DESKEW_PERIOD {
+ u32 deskew_period: 32;
+ } bits;
+ } DESKEW_PERIOD;
+
+ union _0x90 {
+ u32 val;
+ struct _DESKEW_BUSY {
+ u32 deskew_busy: 1;
+ u32 reserved: 31;
+ } bits;
+ } DESKEW_BUSY;
+
+ union _0x94 {
+ u32 val;
+ struct _DESKEW_LANE_MASK {
+ u32 deskew_lane0_mask: 1;
+ u32 deskew_lane1_mask: 1;
+ u32 deskew_lane2_mask: 1;
+ u32 deskew_lane3_mask: 1;
+ u32 reserved: 28;
+ } bits;
+ } DESKEW_LANE_MASK;
+
+ union _0x98 {
+ u32 val;
+ struct _CMD_MODE_STATUS {
+ /*
+ * This bit is set when a read command is issued and cleared
+ * when the entire response is stored in the FIFO.
+ * Value after reset: 0x0
+ *
+ * NOTE:
+ * For mipi-dsi-r1p0 IP, this bit is set immediately when
+ * the read cmd is set to the GEN_HDR register.
+ *
+ * For dsi-ctrl-r1p0 IP, this bit is set only after the read
+ * cmd was actually sent out from the controller.
+ */
+ u32 gen_cmd_rdcmd_ongoing: 1;
+
+ /*
+ * This bit indicates the empty status of the generic read
+ * payload FIFO.
+ * Value after reset: 0x1
+ */
+ u32 gen_cmd_rdata_fifo_empty: 1;
+
+ /*
+ * This bit indicates the full status of the generic read
+ * payload FIFO.
+ * Value after reset: 0x0
+ */
+ u32 gen_cmd_rdata_fifo_full: 1;
+
+ /*
+ * This bit indicates the empty status of the generic write
+ * payload FIFO.
+ * Value after reset: 0x1
+ */
+ u32 gen_cmd_wdata_fifo_empty: 1;
+
+ /*
+ * This bit indicates the full status of the generic write
+ * payload FIFO.
+ * Value after reset: 0x0
+ */
+ u32 gen_cmd_wdata_fifo_full: 1;
+
+ /*
+ * This bit indicates the empty status of the generic
+ * command FIFO.
+ * Value after reset: 0x1
+ */
+ u32 gen_cmd_cmd_fifo_empty: 1;
+
+ /*
+ * This bit indicates the full status of the generic
+ * command FIFO.
+ * Value after reset: 0x0
+ */
+ u32 gen_cmd_cmd_fifo_full: 1;
+
+ /*
+ * This bit is set when the entire response of read is
+ * stored in the rx payload FIFO. And it will be cleared
+ * automaticlly after read this bit each time.
+ * Value after reset: 0x0
+ *
+ * NOTE: this bit is just supported for dsi-ctrl-r1p0 IP
+ */
+ u32 gen_cmd_rdcmd_done: 1;
+
+ u32 reserved : 24;
+
+ } bits;
+ } CMD_MODE_STATUS;
+
+ union _0x9C {
+ u32 val;
+ struct _PHY_STATUS {
+ /* the status of phydirection D-PHY signal */
+ u32 phy_direction: 1;
+
+ /* the status of phylock D-PHY signal */
+ u32 phy_lock: 1;
+
+ /* the status of rxulpsesc0lane D-PHY signal */
+ u32 phy_rxulpsesc0lane: 1;
+
+ /* the status of phystopstateclklane D-PHY signal */
+ u32 phy_stopstateclklane: 1;
+
+ /* the status of phystopstate0lane D-PHY signal */
+ u32 phy_stopstate0lane: 1;
+
+ /* the status of phystopstate1lane D-PHY signal */
+ u32 phy_stopstate1lane: 1;
+
+ /* the status of phystopstate2lane D-PHY signal */
+ u32 phy_stopstate2lane: 1;
+
+ /* the status of phystopstate3lane D-PHY signal */
+ u32 phy_stopstate3lane: 1;
+
+ /* the status of phyulpsactivenotclk D-PHY signal */
+ u32 phy_ulpsactivenotclk: 1;
+
+ /* the status of ulpsactivenot0lane D-PHY signal */
+ u32 phy_ulpsactivenot0lane: 1;
+
+ /* the status of ulpsactivenot1lane D-PHY signal */
+ u32 phy_ulpsactivenot1lane: 1;
+
+ /* the status of ulpsactivenot2lane D-PHY signal */
+ u32 phy_ulpsactivenot2lane: 1;
+
+ /* the status of ulpsactivenot3lane D-PHY signal */
+ u32 phy_ulpsactivenot3lane: 1;
+
+ u32 reserved: 19;
+
+ } bits;
+ } PHY_STATUS;
+
+ union _0xA0 {
+ u32 val;
+ struct _PHY_MIN_STOP_TIME {
+ /* This field configures the minimum wait period to request
+ * a high-speed transmission after the Stop state.
+ */
+ u32 phy_min_stop_time: 8;
+
+ u32 reserved: 24;
+ } bits;
+ } PHY_MIN_STOP_TIME;
+
+ union _0xA4 {
+ u32 val;
+ struct _PHY_LANE_NUM_CONFIG {
+ /*
+ * This field configures the number of active data lanes:
+ * 00: One data lane (lane 0)
+ * 01: Two data lanes (lanes 0 and 1)
+ * 10: Three data lanes (lanes 0, 1, and 2)
+ * 11: Four data lanes (lanes 0, 1, 2, and 3)
+ */
+ u32 phy_lane_num: 2;
+
+ u32 reserved: 30;
+
+ } bits;
+ } PHY_LANE_NUM_CONFIG;
+
+ union _0xA8 {
+ u32 val;
+ struct _PHY_CLKLANE_TIME_CONFIG {
+ /*
+ * This field configures the maximum time that the D-PHY
+ * clock lane takes to go from low-power to high-speed
+ * transmission measured in lane byte clock cycles.
+ */
+ u32 phy_clklane_lp_to_hs_time: 16;
+
+ /*
+ * This field configures the maximum time that the D-PHY
+ * clock lane takes to go from high-speed to low-power
+ * transmission measured in lane byte clock cycles.
+ */
+ u32 phy_clklane_hs_to_lp_time: 16;
+
+ } bits;
+ } PHY_CLKLANE_TIME_CONFIG;
+
+ union _0xAC {
+ u32 val;
+ struct _PHY_DATALANE_TIME_CONFIG {
+ /*
+ * This field configures the maximum time that the D-PHY data
+ * lanes take to go from low-power to high-speed transmission
+ * measured in lane byte clock cycles.
+ */
+ u32 phy_datalane_lp_to_hs_time: 16;
+
+ /*
+ * This field configures the maximum time that the D-PHY data
+ * lanes take to go from high-speed to low-power transmission
+ * measured in lane byte clock cycles.
+ */
+ u32 phy_datalane_hs_to_lp_time: 16;
+
+ } bits;
+ } PHY_DATALANE_TIME_CONFIG;
+
+ union _0xB0 {
+ u32 val;
+ struct _MAX_READ_TIME {
+ /*
+ * This field configures the maximum time required to perform
+ * a read command in lane byte clock cycles. This register can
+ * only be modified when no read command is in progress.
+ */
+ u32 max_rd_time: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } MAX_READ_TIME;
+
+ union _0xB4 {
+ u32 val;
+ struct _RX_PKT_CHECK_CONFIG {
+ /* When set to 1, this bit enables the ECC reception, error
+ * correction, and reporting.
+ */
+ u32 rx_pkt_ecc_en: 1;
+
+ /* When set to 1, this bit enables the CRC reception and error
+ * reporting.
+ */
+ u32 rx_pkt_crc_en: 1;
+
+ u32 reserved: 30;
+
+ } bits;
+ } RX_PKT_CHECK_CONFIG;
+
+ union _0xB8 {
+ u32 val;
+ struct _TA_EN {
+ /* When set to 1, this bit enables the Bus Turn-Around (BTA)
+ * request.
+ */
+ u32 ta_en: 1;
+
+ u32 reserved: 31;
+
+ } bits;
+ } TA_EN;
+
+ union _0xBC {
+ u32 val;
+ struct _EOTP_EN {
+ /* When set to 1, this bit enables the EoTp transmission */
+ u32 tx_eotp_en: 1;
+
+ /* When set to 1, this bit enables the EoTp reception. */
+ u32 rx_eotp_en: 1;
+
+ u32 reserved: 30;
+
+ } bits;
+ } EOTP_EN;
+
+ union _0xC0 {
+ u32 val;
+ struct _VIDEO_NULLPKT_SIZE {
+ /*
+ * This register configures the number of bytes inside a null
+ * packet. Setting it to 0 disables the null packets.
+ */
+ u32 video_nullpkt_size: 13;
+
+ u32 reserved: 19;
+
+ } bits;
+ } VIDEO_NULLPKT_SIZE;
+
+ union _0xC4 {
+ u32 val;
+ struct _DCS_WM_PKT_SIZE {
+ /*
+ * This field configures the maximum allowed size for an eDPI
+ * write memory command, measured in pixels. Automatic parti-
+ * tioning of data obtained from eDPI is permanently enabled.
+ */
+ u32 dcs_wm_pkt_size: 16;
+
+ u32 reserved: 16;
+ } bits;
+ } DCS_WM_PKT_SIZE;
+
+ union _0xC8 {
+ u32 val;
+ struct _PROTOCOL_INT_CLR {
+ u32 clr_dphy_errors_0: 1;
+ u32 clr_dphy_errors_1: 1;
+ u32 clr_dphy_errors_2: 1;
+ u32 clr_dphy_errors_3: 1;
+ u32 clr_dphy_errors_4: 1;
+ u32 clr_protocol_debug_err: 11;
+ u32 clr_ack_with_err_0: 1;
+ u32 clr_ack_with_err_1: 1;
+ u32 clr_ack_with_err_2: 1;
+ u32 clr_ack_with_err_3: 1;
+ u32 clr_ack_with_err_4: 1;
+ u32 clr_ack_with_err_5: 1;
+ u32 clr_ack_with_err_6: 1;
+ u32 clr_ack_with_err_7: 1;
+ u32 clr_ack_with_err_8: 1;
+ u32 clr_ack_with_err_9: 1;
+ u32 clr_ack_with_err_10: 1;
+ u32 clr_ack_with_err_11: 1;
+ u32 clr_ack_with_err_12: 1;
+ u32 clr_ack_with_err_13: 1;
+ u32 clr_ack_with_err_14: 1;
+ u32 clr_ack_with_err_15: 1;
+ } bits;
+ } PROTOCOL_INT_CLR;
+
+ union _0xCC {
+ u32 val;
+ struct _INTERNAL_INT_CLR {
+ u32 clr_receive_pkt_size_err: 1;
+ u32 clr_eopt_not_receive_err: 1;
+ u32 clr_gen_cmd_cmd_fifo_wr_err: 1;
+ u32 clr_gen_cmd_rdata_fifo_rd_err: 1;
+ u32 clr_gen_cmd_rdata_fifo_wr_err: 1;
+ u32 clr_gen_cmd_wdata_fifo_wr_err: 1;
+ u32 clr_gen_cmd_wdata_fifo_rd_err: 1;
+ u32 clr_dpi_pix_fifo_wr_err: 1;
+ u32 clr_internal_debug_err: 19;
+ u32 clr_ecc_single_err: 1;
+ u32 clr_ecc_multi_err: 1;
+ u32 clr_crc_err: 1;
+ u32 clr_hs_tx_timeout: 1;
+ u32 clr_lp_rx_timeout: 1;
+ } bits;
+ } INTERNAL_INT_CLR;
+
+ union _0xD0 {
+ u32 val;
+ struct _VIDEO_SIG_DELAY_CONFIG {
+
+ /*
+ * DPI interface signal delay to be used in clk lanebyte
+ * domain for control logic to read video data from pixel
+ * memory in mannal mode, measured in clk_lanebyte cycles
+ */
+ u32 video_sig_delay: 24;
+
+ /*
+ * 1'b1: mannal mode
+ * dsi controller will use video_sig_delay value as
+ * the delay for the packet handle logic to read video
+ * data from pixel memory.
+ *
+ * 1'b0: auto mode
+ * dsi controller will auto calculate the delay for
+ * the packet handle logic to read video data from
+ * pixel memory.
+ */
+ u32 video_sig_delay_mode: 1;
+
+ u32 reserved: 7;
+ } bits;
+ } VIDEO_SIG_DELAY_CONFIG;
+
+ u32 reservedD4_EC[7];
+
+ union _0xF0 {
+ u32 val;
+ struct _PHY_TST_CTRL0 {
+ /* PHY test interface clear (active high) */
+ u32 phy_testclr: 1;
+
+ /* This bit is used to clock the TESTDIN bus into the D-PHY */
+ u32 phy_testclk: 1;
+
+ u32 reserved: 30;
+ } bits;
+ } PHY_TST_CTRL0;
+
+ union _0xF4 {
+ u32 val;
+ struct _PHY_TST_CTRL1 {
+ /* PHY test interface input 8-bit data bus for internal
+ * register programming and test functionalities access.
+ */
+ u32 phy_testdin: 8;
+
+ /* PHY output 8-bit data bus for read-back and internal
+ * probing functionalities.
+ */
+ u32 phy_testdout: 8;
+
+ /*
+ * PHY test interface operation selector:
+ * 1: The address write operation is set on the falling edge
+ * of the testclk signal.
+ * 0: The data write operation is set on the rising edge of
+ * the testclk signal.
+ */
+ u32 phy_testen: 1;
+
+ u32 reserved: 15;
+ } bits;
+ } PHY_TST_CTRL1;
+
+ u32 reservedF8_1FC[66];
+
+ union _0x200 {
+ u32 val;
+ struct _INT_PLL_STS {
+ u32 int_pll_sts: 1;
+ u32 reserved: 31;
+ } bits;
+ } INT_PLL_STS;
+
+ union _0x204 {
+ u32 val;
+ struct _INT_PLL_MSK {
+ u32 int_pll_msk: 1;
+ u32 reserved: 31;
+ } bits;
+ } INT_PLL_MSK;
+
+ union _0x208 {
+ u32 val;
+ struct _INT_PLL_CLR {
+ u32 int_pll_clr: 1;
+ u32 reserved: 31;
+ } bits;
+ } INT_PLL_CLR;
+
+};
+
+#endif
diff --git a/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0_ppi.c b/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0_ppi.c
new file mode 100644
index 0000000..c8f903b
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/core/dsi_ctrl_r1p0_ppi.c
@@ -0,0 +1,375 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include "dsi_ctrl_r1p0.h"
+#include "sprd_dphy.h"
+
+/*
+ * Reset D-PHY module
+ * @param phy: pointer to structure
+ * which holds information about the d-phy module
+ * @param reset
+ */
+static void dsi_phy_rstz(struct dphy_context *ctx, int level)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_reset_n = level;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Power up/down D-PHY module
+ * @param phy: pointer to structure
+ * which holds information about the d-phy module
+ * @param enable (1: shutdown)
+ */
+static void dsi_phy_shutdownz(struct dphy_context *ctx, int level)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_shutdown = level;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Force D-PHY PLL to stay on while in ULPS
+ * @param phy: pointer to structure
+ * which holds information about the d-phy module
+ * @param force (1) disable (0)
+ * @note To follow the programming model, use wakeup_pll function
+ */
+static void dsi_phy_force_pll(struct dphy_context *ctx, int force)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_force_pll = force;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+static void dsi_phy_clklane_ulps_rqst(struct dphy_context *ctx, int en)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_clk_txrequlps = en;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+static void dsi_phy_clklane_ulps_exit(struct dphy_context *ctx, int en)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_clk_txexitulps = en;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+static void dsi_phy_datalane_ulps_rqst(struct dphy_context *ctx, int en)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_data_txrequlps = en;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+static void dsi_phy_datalane_ulps_exit(struct dphy_context *ctx, int en)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_data_txexitulps = en;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Configure minimum wait period for HS transmission request after a stop state
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param no_of_byte_cycles [in byte (lane) clock cycles]
+ */
+static void dsi_phy_stop_wait_time(struct dphy_context *ctx, u8 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+
+ writel(byte_cycle, ®->PHY_MIN_STOP_TIME);
+}
+
+/*
+ * Set number of active lanes
+ * @param phy: pointer to structure
+ * which holds information about the d-phy module
+ * @param no_of_lanes
+ */
+static void dsi_phy_datalane_en(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+
+ writel(ctx->lanes - 1, ®->PHY_LANE_NUM_CONFIG);
+}
+
+/*
+ * Enable clock lane module
+ * @param phy pointer to structure
+ * which holds information about the d-phy module
+ * @param en
+ */
+static void dsi_phy_clklane_en(struct dphy_context *ctx, int en)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(®->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_clk_en = en;
+
+ writel(phy_interface_ctrl.val, ®->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Request the PHY module to start transmission of high speed clock.
+ * This causes the clock lane to start transmitting DDR clock on the
+ * lane interconnect.
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param enable
+ * @note this function should be called explicitly by user always except for
+ * transmitting
+ */
+static void dsi_phy_clk_hs_rqst(struct dphy_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x74 phy_clk_lane_lp_ctrl;
+
+ phy_clk_lane_lp_ctrl.val = readl(®->PHY_CLK_LANE_LP_CTRL);
+ phy_clk_lane_lp_ctrl.bits.auto_clklane_ctrl_en = 0;
+ phy_clk_lane_lp_ctrl.bits.phy_clklane_tx_req_hs = enable;
+
+ writel(phy_clk_lane_lp_ctrl.val, ®->PHY_CLK_LANE_LP_CTRL);
+}
+
+/*
+ * Get D-PHY PPI status
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param mask
+ * @return status
+ */
+static u8 dsi_phy_is_pll_locked(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ return phy_status.bits.phy_lock;
+}
+
+static u8 dsi_phy_is_rx_direction(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ return phy_status.bits.phy_direction;
+}
+
+static u8 dsi_phy_is_rx_ulps_esc_lane0(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ return phy_status.bits.phy_rxulpsesc0lane;
+}
+
+static u8 dsi_phy_is_stop_state_datalane(struct dphy_context *ctx)
+{
+ u8 state = 0;
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ if (phy_status.bits.phy_stopstate0lane)
+ state |= BIT(0);
+ if (phy_status.bits.phy_stopstate1lane)
+ state |= BIT(1);
+ if (phy_status.bits.phy_stopstate2lane)
+ state |= BIT(2);
+ if (phy_status.bits.phy_stopstate3lane)
+ state |= BIT(3);
+
+ return state;
+}
+
+static u8 dsi_phy_is_stop_state_clklane(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ return phy_status.bits.phy_stopstateclklane;
+}
+
+static u8 dsi_phy_is_ulps_active_datalane(struct dphy_context *ctx)
+{
+ u8 state = 0;
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ if (!phy_status.bits.phy_ulpsactivenot0lane)
+ state |= BIT(0);
+ if (!phy_status.bits.phy_ulpsactivenot1lane)
+ state |= BIT(1);
+ if (!phy_status.bits.phy_ulpsactivenot2lane)
+ state |= BIT(2);
+ if (!phy_status.bits.phy_ulpsactivenot3lane)
+ state |= BIT(3);
+
+ return state;
+}
+
+static u8 dsi_phy_is_ulps_active_clklane(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(®->PHY_STATUS);
+
+ return !phy_status.bits.phy_ulpsactivenotclk;
+}
+
+/*
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param value
+ */
+static void dsi_phy_test_clk(struct dphy_context *ctx, u8 value)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0xF0 phy_tst_ctrl0;
+
+ phy_tst_ctrl0.val = readl(®->PHY_TST_CTRL0);
+ phy_tst_ctrl0.bits.phy_testclk = value;
+
+ writel(phy_tst_ctrl0.val, ®->PHY_TST_CTRL0);
+}
+
+/*
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param value
+ */
+static void dsi_phy_test_clr(struct dphy_context *ctx, u8 value)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0xF0 phy_tst_ctrl0;
+
+ phy_tst_ctrl0.val = readl(®->PHY_TST_CTRL0);
+ phy_tst_ctrl0.bits.phy_testclr = value;
+
+ writel(phy_tst_ctrl0.val, ®->PHY_TST_CTRL0);
+}
+
+/*
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param on_falling_edge
+ */
+static void dsi_phy_test_en(struct dphy_context *ctx, u8 value)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0xF4 phy_tst_ctrl1;
+
+ phy_tst_ctrl1.val = readl(®->PHY_TST_CTRL1);
+ phy_tst_ctrl1.bits.phy_testen = value;
+
+ writel(phy_tst_ctrl1.val, ®->PHY_TST_CTRL1);
+}
+
+/*
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ */
+static u8 dsi_phy_test_dout(struct dphy_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0xF4 phy_tst_ctrl1;
+
+ phy_tst_ctrl1.val = readl(®->PHY_TST_CTRL1);
+
+ return phy_tst_ctrl1.bits.phy_testdout;
+}
+
+/*
+ * @param phy pointer to structure which holds information about the d-phy
+ * module
+ * @param test_data
+ */
+static void dsi_phy_test_din(struct dphy_context *ctx, u8 data)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->ctrlbase;
+ union _0xF4 phy_tst_ctrl1;
+
+ phy_tst_ctrl1.val = readl(®->PHY_TST_CTRL1);
+ phy_tst_ctrl1.bits.phy_testdin = data;
+
+ writel(phy_tst_ctrl1.val, ®->PHY_TST_CTRL1);
+}
+
+struct dphy_ppi_ops dsi_ctrl_ppi_ops = {
+ .rstz = dsi_phy_rstz,
+ .shutdownz = dsi_phy_shutdownz,
+ .force_pll = dsi_phy_force_pll,
+ .clklane_ulps_rqst = dsi_phy_clklane_ulps_rqst,
+ .clklane_ulps_exit = dsi_phy_clklane_ulps_exit,
+ .datalane_ulps_rqst = dsi_phy_datalane_ulps_rqst,
+ .datalane_ulps_exit = dsi_phy_datalane_ulps_exit,
+ .stop_wait_time = dsi_phy_stop_wait_time,
+ .datalane_en = dsi_phy_datalane_en,
+ .clklane_en = dsi_phy_clklane_en,
+ .clk_hs_rqst = dsi_phy_clk_hs_rqst,
+ .is_pll_locked = dsi_phy_is_pll_locked,
+ .is_rx_direction = dsi_phy_is_rx_direction,
+ .is_rx_ulps_esc_lane0 = dsi_phy_is_rx_ulps_esc_lane0,
+ .is_stop_state_datalane = dsi_phy_is_stop_state_datalane,
+ .is_stop_state_clklane = dsi_phy_is_stop_state_clklane,
+ .is_ulps_active_datalane = dsi_phy_is_ulps_active_datalane,
+ .is_ulps_active_clklane = dsi_phy_is_ulps_active_clklane,
+ .tst_clk = dsi_phy_test_clk,
+ .tst_clr = dsi_phy_test_clr,
+ .tst_en = dsi_phy_test_en,
+ .tst_dout = dsi_phy_test_dout,
+ .tst_din = dsi_phy_test_din,
+ .bist_en = NULL,
+ .is_bist_ok = NULL,
+};
diff --git a/drivers/gpu/drm/sprd/dsi/sprd_dsi_api.c b/drivers/gpu/drm/sprd/dsi/sprd_dsi_api.c
new file mode 100644
index 0000000..b17324b
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/sprd_dsi_api.c
@@ -0,0 +1,544 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include <linux/delay.h>
+
+#include "sprd_dsi_hal.h"
+
+static u16 calc_bytes_per_pixel_x100(int coding)
+{
+ u16 Bpp_x100;
+
+ switch (coding) {
+ case COLOR_CODE_16BIT_CONFIG1:
+ case COLOR_CODE_16BIT_CONFIG2:
+ case COLOR_CODE_16BIT_CONFIG3:
+ Bpp_x100 = 200;
+ break;
+ case COLOR_CODE_18BIT_CONFIG1:
+ case COLOR_CODE_18BIT_CONFIG2:
+ Bpp_x100 = 225;
+ break;
+ case COLOR_CODE_24BIT:
+ Bpp_x100 = 300;
+ break;
+ case COLOR_CODE_COMPRESSTION:
+ Bpp_x100 = 100;
+ break;
+ case COLOR_CODE_20BIT_YCC422_LOOSELY:
+ Bpp_x100 = 250;
+ break;
+ case COLOR_CODE_24BIT_YCC422:
+ Bpp_x100 = 300;
+ break;
+ case COLOR_CODE_16BIT_YCC422:
+ Bpp_x100 = 200;
+ break;
+ case COLOR_CODE_30BIT:
+ Bpp_x100 = 375;
+ break;
+ case COLOR_CODE_36BIT:
+ Bpp_x100 = 450;
+ break;
+ case COLOR_CODE_12BIT_YCC420:
+ Bpp_x100 = 150;
+ break;
+ default:
+ pr_err("invalid color coding");
+ Bpp_x100 = 0;
+ break;
+ }
+
+ return Bpp_x100;
+}
+
+static u8 calc_video_size_step(int coding)
+{
+ u8 video_size_step;
+
+ switch (coding) {
+ case COLOR_CODE_16BIT_CONFIG1:
+ case COLOR_CODE_16BIT_CONFIG2:
+ case COLOR_CODE_16BIT_CONFIG3:
+ case COLOR_CODE_18BIT_CONFIG1:
+ case COLOR_CODE_18BIT_CONFIG2:
+ case COLOR_CODE_24BIT:
+ case COLOR_CODE_COMPRESSTION:
+ return video_size_step = 1;
+ case COLOR_CODE_20BIT_YCC422_LOOSELY:
+ case COLOR_CODE_24BIT_YCC422:
+ case COLOR_CODE_16BIT_YCC422:
+ case COLOR_CODE_30BIT:
+ case COLOR_CODE_36BIT:
+ case COLOR_CODE_12BIT_YCC420:
+ return video_size_step = 2;
+ default:
+ pr_err("invalid color coding");
+ return 0;
+ }
+}
+
+static u16 round_video_size(int coding, u16 video_size)
+{
+ switch (coding) {
+ case COLOR_CODE_16BIT_YCC422:
+ case COLOR_CODE_24BIT_YCC422:
+ case COLOR_CODE_20BIT_YCC422_LOOSELY:
+ case COLOR_CODE_12BIT_YCC420:
+ /* round up active H pixels to a multiple of 2 */
+ if ((video_size % 2) != 0)
+ video_size += 1;
+ break;
+ default:
+ break;
+ }
+
+ return video_size;
+}
+
+#define SPRD_MIPI_DSI_FMT_DSC 0xff
+static u32 fmt_to_coding(u32 fmt)
+{
+ switch (fmt) {
+ case MIPI_DSI_FMT_RGB565:
+ return COLOR_CODE_16BIT_CONFIG1;
+ case MIPI_DSI_FMT_RGB666_PACKED:
+ return COLOR_CODE_18BIT_CONFIG1;
+ case MIPI_DSI_FMT_RGB666:
+ case MIPI_DSI_FMT_RGB888:
+ return COLOR_CODE_24BIT;
+ case SPRD_MIPI_DSI_FMT_DSC:
+ return COLOR_CODE_COMPRESSTION;
+ default:
+ DRM_ERROR("Unsupported format (%d)\n", fmt);
+ return COLOR_CODE_24BIT;
+ }
+}
+
+#define ns_to_cycle(ns, byte_clk) \
+ DIV_ROUND_UP((ns) * (byte_clk), 1000000)
+
+int sprd_dsi_init(struct sprd_dsi *dsi)
+{
+ int div;
+ struct dsi_context *ctx = &dsi->ctx;
+ u16 max_rd_time;
+ u16 data_hs2lp, data_lp2hs, clk_hs2lp, clk_lp2hs;
+
+ dsi_hal_power_en(dsi, 0);
+ dsi_hal_int0_mask(dsi, 0xffffffff);
+ dsi_hal_int1_mask(dsi, 0xffffffff);
+ dsi_hal_cmd_mode(dsi);
+ dsi_hal_eotp_rx_en(dsi, 0);
+ dsi_hal_eotp_tx_en(dsi, 0);
+ dsi_hal_ecc_rx_en(dsi, 1);
+ dsi_hal_crc_rx_en(dsi, 1);
+ dsi_hal_bta_en(dsi, 1);
+ dsi_hal_video_vcid(dsi, 0);
+ dsi_hal_rx_vcid(dsi, 0);
+
+ div = DIV_ROUND_UP(ctx->byte_clk, ctx->esc_clk);
+ dsi_hal_tx_escape_division(dsi, div);
+ pr_info("escape clock divider = %d\n", div);
+
+ max_rd_time = ns_to_cycle(ctx->max_rd_time, ctx->byte_clk);
+ dsi_hal_max_read_time(dsi, max_rd_time);
+
+ data_hs2lp = ns_to_cycle(ctx->data_hs2lp, ctx->byte_clk);
+ data_lp2hs = ns_to_cycle(ctx->data_lp2hs, ctx->byte_clk);
+ clk_hs2lp = ns_to_cycle(ctx->clk_hs2lp, ctx->byte_clk);
+ clk_lp2hs = ns_to_cycle(ctx->clk_lp2hs, ctx->byte_clk);
+ dsi_hal_datalane_hs2lp_config(dsi, data_hs2lp);
+ dsi_hal_datalane_lp2hs_config(dsi, data_lp2hs);
+ dsi_hal_clklane_hs2lp_config(dsi, clk_hs2lp);
+ dsi_hal_clklane_lp2hs_config(dsi, clk_lp2hs);
+
+ dsi_hal_power_en(dsi, 1);
+
+ return 0;
+}
+
+/*
+ * Close DSI Host driver
+ * - Free up resources and shutdown host controller and PHY
+ * @param dsi pointer to structure holding the DSI Host core information
+ * @return int
+ */
+int sprd_dsi_uninit(struct sprd_dsi *dsi)
+{
+ dsi_hal_int0_mask(dsi, 0xffffffff);
+ dsi_hal_int1_mask(dsi, 0xffffffff);
+ dsi_hal_power_en(dsi, 0);
+
+ return 0;
+}
+
+/*
+ * Configure DPI video interface
+ * - If not in burst mode, it will compute the video and null packet sizes
+ * according to necessity
+ * - Configure timers for data lanes and/or clock lane to return to LP when
+ * bandwidth is not filled by data
+ * @param dsi pointer to structure holding the DSI Host core information
+ * @param param pointer to video stream-to-send information
+ * @return error code
+ */
+int sprd_dsi_dpi_video(struct sprd_dsi *dsi)
+{
+ u16 Bpp_x100;
+ u16 video_size;
+ u32 ratio_x1000;
+ u16 null_pkt_size = 0;
+ u8 video_size_step;
+ u32 hs_to;
+ u32 total_bytes;
+ u32 bytes_per_chunk;
+ u32 chunks = 0;
+ u32 bytes_left = 0;
+ u32 chunk_overhead;
+ const u8 pkt_header = 6;
+ u8 coding;
+ int div;
+ u16 hline;
+ struct dsi_context *ctx = &dsi->ctx;
+ struct videomode *vm = &dsi->ctx.vm;
+
+ coding = fmt_to_coding(ctx->format);
+ video_size = round_video_size(coding, vm->hactive);
+ Bpp_x100 = calc_bytes_per_pixel_x100(coding);
+ video_size_step = calc_video_size_step(coding);
+ ratio_x1000 = ctx->byte_clk * 1000 / (vm->pixelclock / 1000);
+ hline = vm->hactive + vm->hsync_len + vm->hfront_porch +
+ vm->hback_porch;
+
+ dsi_hal_power_en(dsi, 0);
+ dsi_hal_dpi_frame_ack_en(dsi, ctx->frame_ack_en);
+ dsi_hal_dpi_color_coding(dsi, coding);
+ dsi_hal_dpi_video_burst_mode(dsi, ctx->burst_mode);
+ dsi_hal_dpi_sig_delay(dsi, 95 * hline * ratio_x1000 / 100000);
+ dsi_hal_dpi_hline_time(dsi, hline * ratio_x1000 / 1000);
+ dsi_hal_dpi_hsync_time(dsi, vm->hsync_len * ratio_x1000 / 1000);
+ dsi_hal_dpi_hbp_time(dsi, vm->hback_porch * ratio_x1000 / 1000);
+ dsi_hal_dpi_vact(dsi, vm->vactive);
+ dsi_hal_dpi_vfp(dsi, vm->vfront_porch);
+ dsi_hal_dpi_vbp(dsi, vm->vback_porch);
+ dsi_hal_dpi_vsync(dsi, vm->vsync_len);
+ dsi_hal_dpi_hporch_lp_en(dsi, 1);
+ dsi_hal_dpi_vporch_lp_en(dsi, 1);
+ dsi_hal_dpi_hsync_pol(dsi, 0);
+ dsi_hal_dpi_vsync_pol(dsi, 0);
+ dsi_hal_dpi_data_en_pol(dsi, 0);
+ dsi_hal_dpi_color_mode_pol(dsi, 0);
+ dsi_hal_dpi_shut_down_pol(dsi, 0);
+
+ hs_to = (hline * vm->vactive) + (2 * Bpp_x100) / 100;
+ for (div = 0x80; (div < hs_to) && (div > 2); div--) {
+ if ((hs_to % div) == 0) {
+ dsi_hal_timeout_clock_division(dsi, div);
+ dsi_hal_lp_rx_timeout(dsi, hs_to / div);
+ dsi_hal_hs_tx_timeout(dsi, hs_to / div);
+ break;
+ }
+ }
+
+ if (ctx->burst_mode == VIDEO_BURST_WITH_SYNC_PULSES) {
+ dsi_hal_dpi_video_packet_size(dsi, video_size);
+ dsi_hal_dpi_null_packet_size(dsi, 0);
+ dsi_hal_dpi_chunk_num(dsi, 0);
+ } else {
+ /* non burst transmission */
+ null_pkt_size = 0;
+
+ /* bytes to be sent - first as one chunk */
+ bytes_per_chunk = vm->hactive * Bpp_x100 / 100 + pkt_header;
+
+ /* hline total bytes from the DPI interface */
+ total_bytes = (vm->hactive + vm->hfront_porch) *
+ ratio_x1000 / ctx->lanes / 1000;
+
+ /* check if the pixels actually fit on the DSI link */
+ if (total_bytes < bytes_per_chunk) {
+ pr_err("current resolution can not be set\n");
+ return -1;
+ }
+
+ chunk_overhead = total_bytes - bytes_per_chunk;
+
+ /* overhead higher than 1 -> enable multi packets */
+ if (chunk_overhead > 1) {
+
+ /* multi packets */
+ for (video_size = video_size_step;
+ video_size < vm->hactive;
+ video_size += video_size_step) {
+
+ if (vm->hactive * 1000 / video_size % 1000)
+ continue;
+
+ chunks = vm->hactive / video_size;
+ bytes_per_chunk = Bpp_x100 * video_size / 100
+ + pkt_header;
+ if (total_bytes >= (bytes_per_chunk * chunks)) {
+ bytes_left = total_bytes -
+ bytes_per_chunk * chunks;
+ break;
+ }
+ }
+
+ /* prevent overflow (unsigned - unsigned) */
+ if (bytes_left > (pkt_header * chunks)) {
+ null_pkt_size = (bytes_left -
+ pkt_header * chunks) / chunks;
+ /* avoid register overflow */
+ if (null_pkt_size > 1023)
+ null_pkt_size = 1023;
+ }
+
+ } else {
+
+ /* single packet */
+ chunks = 1;
+
+ /* must be a multiple of 4 except 18 loosely */
+ for (video_size = vm->hactive;
+ (video_size % video_size_step) != 0;
+ video_size++)
+ ;
+ }
+
+ dsi_hal_dpi_video_packet_size(dsi, video_size);
+ dsi_hal_dpi_null_packet_size(dsi, null_pkt_size);
+ dsi_hal_dpi_chunk_num(dsi, chunks);
+ }
+
+ dsi_hal_int0_mask(dsi, ctx->int0_mask);
+ dsi_hal_int1_mask(dsi, ctx->int1_mask);
+ dsi_hal_power_en(dsi, 1);
+
+ return 0;
+}
+
+int sprd_dsi_edpi_video(struct sprd_dsi *dsi)
+{
+ const u32 fifo_depth = 1096;
+ const u32 word_length = 4;
+ struct dsi_context *ctx = &dsi->ctx;
+ u32 hactive = ctx->vm.hactive;
+ u32 Bpp_x100;
+ u32 max_fifo_len;
+ u8 coding;
+
+ coding = fmt_to_coding(ctx->format);
+ Bpp_x100 = calc_bytes_per_pixel_x100(coding);
+ max_fifo_len = word_length * fifo_depth * 100 / Bpp_x100;
+
+ dsi_hal_power_en(dsi, 0);
+ dsi_hal_dpi_color_coding(dsi, coding);
+ dsi_hal_tear_effect_ack_en(dsi, ctx->te_ack_en);
+
+ if (max_fifo_len > hactive)
+ dsi_hal_edpi_max_pkt_size(dsi, hactive);
+ else
+ dsi_hal_edpi_max_pkt_size(dsi, max_fifo_len);
+
+ dsi_hal_int0_mask(dsi, ctx->int0_mask);
+ dsi_hal_int1_mask(dsi, ctx->int1_mask);
+ dsi_hal_power_en(dsi, 1);
+
+ return 0;
+}
+
+/*
+ * Send a packet on the generic interface
+ * @param dsi pointer to structure holding the DSI Host core information
+ * @param vc destination virtual channel
+ * @param data_type type of command, inserted in first byte of header
+ * @param params byte array of command parameters
+ * @param param_length length of the above array
+ * @return error code
+ * @note this function has an active delay to wait for the buffer to clear.
+ * The delay is limited to:
+ * (param_length / 4) x DSIH_FIFO_ACTIVE_WAIT x register access time
+ * @note the controller restricts the sending of .
+ * This function will not be able to send Null and Blanking packets due to
+ * controller restriction
+ */
+int sprd_dsi_wr_pkt(struct sprd_dsi *dsi, u8 vc, u8 type,
+ const u8 *param, u16 len)
+{
+ int i = 0;
+ int j = 0;
+ u32 payload;
+ u8 wc_lsbyte, wc_msbyte;
+
+ if (vc > 3)
+ return -EINVAL;
+
+ /* 1st: for long packet, must config payload first */
+ if (!dsi_hal_wait_tx_payload_fifo_empty(dsi))
+ return -1;
+
+ if (len > 2) {
+ for (i = 0; i < len; i += j) {
+ payload = 0;
+ for (j = 0; (j < 4) && ((j + i) < (len)); j++)
+ payload |= param[i + j] << (j * 8);
+
+ dsi_hal_set_packet_payload(dsi, payload);
+ }
+ wc_lsbyte = len & 0xff;
+ wc_msbyte = len >> 8;
+ } else {
+ wc_lsbyte = (len > 0) ? param[0] : 0;
+ wc_msbyte = (len > 1) ? param[1] : 0;
+ }
+
+ /* 2nd: then set packet header */
+ if (!dsi_hal_wait_tx_cmd_fifo_empty(dsi))
+ return -EINVAL;
+
+ dsi_hal_set_packet_header(dsi, vc, type, wc_lsbyte, wc_msbyte);
+
+ return 0;
+}
+
+
+/*
+ * Send READ packet to peripheral using the generic interface
+ * This will force command mode and stop video mode (because of BTA)
+ * @param dsi pointer to structure holding the DSI Host core information
+ * @param vc destination virtual channel
+ * @param data_type generic command type
+ * @param lsb_byte first command parameter
+ * @param msb_byte second command parameter
+ * @param bytes_to_read no of bytes to read (expected to arrive at buffer)
+ * @param read_buffer pointer to 8-bit array to hold the read buffer words
+ * return read_buffer_length
+ * @note this function has an active delay to wait for the buffer to clear.
+ * The delay is limited to 2 x DSIH_FIFO_ACTIVE_WAIT
+ * (waiting for command buffer, and waiting for receiving)
+ * @note this function will enable BTA
+ */
+int sprd_dsi_rd_pkt(struct sprd_dsi *dsi, u8 vc, u8 type,
+ u8 msb_byte, u8 lsb_byte,
+ u8 *buffer, u8 bytes_to_read)
+{
+ int i;
+ int count = 0;
+ u32 temp;
+
+ if (vc > 3)
+ return -EINVAL;
+
+ /* 1st: send read command to peripheral */
+ if (!dsi_hal_wait_tx_cmd_fifo_empty(dsi))
+ return -EINVAL;
+
+ dsi_hal_set_packet_header(dsi, vc, type, lsb_byte, msb_byte);
+
+ /* 2nd: wait peripheral response completed */
+ dsi_hal_wait_rd_resp_completed(dsi);
+
+ /* 3rd: get data from rx payload fifo */
+ if (dsi_hal_is_rx_payload_fifo_empty(dsi)) {
+ pr_err("rx payload fifo empty\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < 100; i++) {
+ temp = dsi_hal_get_rx_payload(dsi);
+
+ if (count < bytes_to_read)
+ buffer[count++] = temp & 0xff;
+ if (count < bytes_to_read)
+ buffer[count++] = (temp >> 8) & 0xff;
+ if (count < bytes_to_read)
+ buffer[count++] = (temp >> 16) & 0xff;
+ if (count < bytes_to_read)
+ buffer[count++] = (temp >> 24) & 0xff;
+
+ if (dsi_hal_is_rx_payload_fifo_empty(dsi))
+ return count;
+ }
+
+ pr_err("read too many buffers\n");
+ return -EINVAL;
+}
+
+void sprd_dsi_set_work_mode(struct sprd_dsi *dsi, u8 mode)
+{
+ if (mode == DSI_MODE_CMD)
+ dsi_hal_cmd_mode(dsi);
+ else
+ dsi_hal_video_mode(dsi);
+}
+
+int sprd_dsi_get_work_mode(struct sprd_dsi *dsi)
+{
+ if (dsi_hal_is_cmd_mode(dsi))
+ return DSI_MODE_CMD;
+ else
+ return DSI_MODE_VIDEO;
+}
+
+void sprd_dsi_lp_cmd_enable(struct sprd_dsi *dsi, bool enable)
+{
+ if (dsi_hal_is_cmd_mode(dsi))
+ dsi_hal_cmd_mode_lp_cmd_en(dsi, enable);
+ else
+ dsi_hal_video_mode_lp_cmd_en(dsi, enable);
+}
+
+void sprd_dsi_nc_clk_en(struct sprd_dsi *dsi, bool enable)
+{
+ dsi_hal_nc_clk_en(dsi, enable);
+}
+
+void sprd_dsi_state_reset(struct sprd_dsi *dsi)
+{
+ dsi_hal_power_en(dsi, 0);
+ udelay(100);
+ dsi_hal_power_en(dsi, 1);
+}
+
+u32 sprd_dsi_int_status(struct sprd_dsi *dsi, int index)
+{
+ u32 status = 0;
+
+ switch (index) {
+ case 0:
+ status = dsi_hal_int0_status(dsi);
+ break;
+
+ case 1:
+ status = dsi_hal_int1_status(dsi);
+ break;
+
+ case 2:
+ status = dsi_hal_int2_status(dsi);
+ break;
+
+ default:
+ break;
+ }
+
+ return status;
+}
+
+void sprd_dsi_int_mask(struct sprd_dsi *dsi, int index)
+{
+ switch (index) {
+ case 0:
+ dsi_hal_int0_mask(dsi, dsi->ctx.int0_mask);
+ break;
+
+ case 1:
+ dsi_hal_int1_mask(dsi, dsi->ctx.int1_mask);
+ break;
+
+ default:
+ break;
+ }
+}
diff --git a/drivers/gpu/drm/sprd/dsi/sprd_dsi_api.h b/drivers/gpu/drm/sprd/dsi/sprd_dsi_api.h
new file mode 100644
index 0000000..45a706a
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/sprd_dsi_api.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#ifndef _MIPI_DSI_API_H_
+#define _MIPI_DSI_API_H_
+
+#include "sprd_dsi.h"
+
+int sprd_dsi_init(struct sprd_dsi *dsi);
+int sprd_dsi_uninit(struct sprd_dsi *dsi);
+int sprd_dsi_dpi_video(struct sprd_dsi *dsi);
+int sprd_dsi_edpi_video(struct sprd_dsi *dsi);
+int sprd_dsi_wr_pkt(struct sprd_dsi *dsi, u8 vc, u8 type,
+ const u8 *param, u16 len);
+int sprd_dsi_rd_pkt(struct sprd_dsi *dsi, u8 vc, u8 type,
+ u8 msb_byte, u8 lsb_byte,
+ u8 *buffer, u8 bytes_to_read);
+void sprd_dsi_set_work_mode(struct sprd_dsi *dsi, u8 mode);
+int sprd_dsi_get_work_mode(struct sprd_dsi *dsi);
+void sprd_dsi_lp_cmd_enable(struct sprd_dsi *dsi, bool enable);
+void sprd_dsi_nc_clk_en(struct sprd_dsi *dsi, bool enable);
+void sprd_dsi_state_reset(struct sprd_dsi *dsi);
+u32 sprd_dsi_int_status(struct sprd_dsi *dsi, int index);
+void sprd_dsi_int_mask(struct sprd_dsi *dsi, int index);
+
+#endif /* _MIPI_DSI_API_H_ */
diff --git a/drivers/gpu/drm/sprd/dsi/sprd_dsi_hal.h b/drivers/gpu/drm/sprd/dsi/sprd_dsi_hal.h
new file mode 100644
index 0000000..666500d
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dsi/sprd_dsi_hal.h
@@ -0,0 +1,1102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#ifndef MIPI_DSI_HAL_H_
+#define MIPI_DSI_HAL_H_
+
+#include <linux/delay.h>
+#include <linux/types.h>
+
+#include "sprd_dsi.h"
+
+/*
+ * Get DSI Host core version
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return true or false
+ */
+static inline bool dsi_hal_check_version(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (!ops->check_version)
+ return false;
+
+ return ops->check_version(ctx);
+}
+/*
+ * Modify power status of DSI Host core
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable power on(1) or off (0)
+ */
+static inline void dsi_hal_power_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->power_en)
+ ops->power_en(ctx, enable);
+}
+/*
+ * Enable DPI video mode
+ * @dsi pointer to structure holding the DSI Host core information
+ */
+static inline void dsi_hal_video_mode(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->video_mode)
+ ops->video_mode(ctx);
+}
+/*
+ * Enable command mode (Generic interface)
+ * @dsi pointer to structure holding the DSI Host core information
+ */
+static inline void dsi_hal_cmd_mode(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->cmd_mode)
+ ops->cmd_mode(ctx);
+}
+static inline bool dsi_hal_is_cmd_mode(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_cmd_mode)
+ return ops->is_cmd_mode(ctx);
+
+ return true;
+}
+/*
+ * Configure the read back virtual channel for the generic interface
+ * @dsi pointer to structure holding the DSI Host core information
+ * @vc to listen to on the line
+ */
+static inline void dsi_hal_rx_vcid(struct sprd_dsi *dsi, u8 vc)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->rx_vcid)
+ ops->rx_vcid(ctx, vc);
+}
+/*
+ * Write the DPI video virtual channel destination
+ * @dsi pointer to structure holding the DSI Host core information
+ * @vc virtual channel
+ */
+static inline void dsi_hal_video_vcid(struct sprd_dsi *dsi, u8 vc)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->video_vcid)
+ ops->video_vcid(ctx, vc);
+}
+/*
+ * Set DPI video mode type (burst/non-burst - with sync pulses or events)
+ * @dsi pointer to structure holding the DSI Host core information
+ * @type burst mode type: with sync pulse or events
+ */
+static inline
+void dsi_hal_dpi_video_burst_mode(struct sprd_dsi *dsi, int type)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_video_burst_mode)
+ ops->dpi_video_burst_mode(ctx, type);
+}
+/*
+ * Set DPI video color coding
+ * @dsi pointer to structure holding the DSI Host core information
+ * @coding enum (configuration and color depth)
+ */
+static inline void dsi_hal_dpi_color_coding(struct sprd_dsi *dsi, int coding)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_color_coding)
+ ops->dpi_color_coding(ctx, coding);
+}
+/*
+ * Set DPI loosely packetisation video (used only when color depth = 18
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable 1 enable, 0 disable
+ */
+static inline
+void dsi_hal_dpi_18_loosely_packet_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_18_loosely_packet_en)
+ ops->dpi_18_loosely_packet_en(ctx, enable);
+}
+/*
+ * Set DPI color mode pin polarity
+ * @dsi pointer to structure holding the DSI Host core information
+ * @active_low (1) or active high (0)
+ */
+static inline
+void dsi_hal_dpi_color_mode_pol(struct sprd_dsi *dsi, int active_low)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_color_mode_pol)
+ ops->dpi_color_mode_pol(ctx, active_low);
+}
+/*
+ * Set DPI shut down pin polarity
+ * @dsi pointer to structure holding the DSI Host core information
+ * @active_low (1) or active high (0)
+ */
+static inline
+void dsi_hal_dpi_shut_down_pol(struct sprd_dsi *dsi, int active_low)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_shut_down_pol)
+ ops->dpi_shut_down_pol(ctx, active_low);
+}
+/*
+ * Set DPI horizontal sync pin polarity
+ * @dsi pointer to structure holding the DSI Host core information
+ * @active_low (1) or active high (0)
+ */
+static inline
+void dsi_hal_dpi_hsync_pol(struct sprd_dsi *dsi, int active_low)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_hsync_pol)
+ ops->dpi_hsync_pol(ctx, active_low);
+}
+/*
+ * Set DPI vertical sync pin polarity
+ * @dsi pointer to structure holding the DSI Host core information
+ * @active_low (1) or active high (0)
+ */
+static inline
+void dsi_hal_dpi_vsync_pol(struct sprd_dsi *dsi, int active_low)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_vsync_pol)
+ ops->dpi_vsync_pol(ctx, active_low);
+}
+/*
+ * Set DPI data enable pin polarity
+ * @dsi pointer to structure holding the DSI Host core information
+ * @active_low (1) or active high (0)
+ */
+static inline
+void dsi_hal_dpi_data_en_pol(struct sprd_dsi *dsi, int active_low)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_data_en_pol)
+ ops->dpi_data_en_pol(ctx, active_low);
+}
+/*
+ * Configure the Horizontal Line time
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle taken to transmit the total of the horizontal line
+ */
+static inline
+void dsi_hal_dpi_hline_time(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_hline_time)
+ ops->dpi_hline_time(ctx, byte_cycle);
+}
+/*
+ * Configure the Horizontal back porch time
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle taken to transmit the horizontal back porch
+ */
+static inline
+void dsi_hal_dpi_hbp_time(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_hbp_time)
+ ops->dpi_hbp_time(ctx, byte_cycle);
+}
+/*
+ * Configure the Horizontal sync time
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle taken to transmit the horizontal sync
+ */
+static inline
+void dsi_hal_dpi_hsync_time(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_hsync_time)
+ ops->dpi_hsync_time(ctx, byte_cycle);
+}
+/*
+ * Configure the DPI Interface signal delay time
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle delay time after receiving HSYNC from DPI interface
+ * to retrieve data from pixel memory
+ */
+static inline
+void dsi_hal_dpi_sig_delay(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_sig_delay)
+ ops->dpi_sig_delay(ctx, byte_cycle);
+}
+/*
+ * Configure the vertical active lines of the video stream
+ * @dsi pointer to structure holding the DSI Host core information
+ * @lines
+ */
+static inline void dsi_hal_dpi_vact(struct sprd_dsi *dsi, u16 lines)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_vact)
+ ops->dpi_vact(ctx, lines);
+}
+/*
+ * Configure the vertical front porch lines of the video stream
+ * @dsi pointer to structure holding the DSI Host core information
+ * @lines
+ */
+static inline void dsi_hal_dpi_vfp(struct sprd_dsi *dsi, u16 lines)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_vfp)
+ ops->dpi_vfp(ctx, lines);
+}
+/*
+ * Configure the vertical back porch lines of the video stream
+ * @dsi pointer to structure holding the DSI Host core information
+ * @lines
+ */
+static inline void dsi_hal_dpi_vbp(struct sprd_dsi *dsi, u16 lines)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_vbp)
+ ops->dpi_vbp(ctx, lines);
+}
+/*
+ * Configure the vertical sync lines of the video stream
+ * @dsi pointer to structure holding the DSI Host core information
+ * @lines
+ */
+static inline void dsi_hal_dpi_vsync(struct sprd_dsi *dsi, u16 lines)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_vsync)
+ ops->dpi_vsync(ctx, lines);
+}
+/*
+ * Enable return to low power mode inside horizontal front porch periods when
+ * timing allows
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ */
+static inline
+void dsi_hal_dpi_hporch_lp_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_hporch_lp_en)
+ ops->dpi_hporch_lp_en(ctx, enable);
+}
+/*
+ * Enable return to low power mode inside vertical active lines periods when
+ * timing allows
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ */
+static inline
+void dsi_hal_dpi_vporch_lp_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_vporch_lp_en)
+ ops->dpi_vporch_lp_en(ctx, enable);
+}
+/*
+ * Enable FRAME BTA ACK
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ */
+static inline
+void dsi_hal_dpi_frame_ack_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_frame_ack_en)
+ ops->dpi_frame_ack_en(ctx, enable);
+}
+/*
+ * Enable null packets (value in null packet size will be taken in calculations)
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ * note: function retained for backward compatibility (not used from 1.20a on)
+ */
+static inline
+void dsi_hal_dpi_null_packet_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_null_packet_en)
+ ops->dpi_null_packet_en(ctx, enable);
+}
+/*
+ * Enable multi packets (value in no of chunks will be taken in calculations)
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ */
+static inline
+void dsi_hal_dpi_multi_packet_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_multi_packet_en)
+ ops->dpi_multi_packet_en(ctx, enable);
+}
+/*
+ * Write no of chunks to core - taken into consideration only when multi packet
+ * is enabled
+ * @dsi pointer to structure holding the DSI Host core information
+ * @num number of chunks
+ */
+static inline void dsi_hal_dpi_chunk_num(struct sprd_dsi *dsi, u16 num)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_chunk_num)
+ ops->dpi_chunk_num(ctx, num);
+}
+/*
+ * Write the null packet size - will only be taken into account when null
+ * packets are enabled.
+ * @dsi pointer to structure holding the DSI Host core information
+ * @size of null packet
+ */
+static inline
+void dsi_hal_dpi_null_packet_size(struct sprd_dsi *dsi, u16 size)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_null_packet_size)
+ ops->dpi_null_packet_size(ctx, size);
+}
+/*
+ * Write video packet size. obligatory for sending video
+ * @dsi pointer to structure holding the DSI Host core information
+ * @size of video packet - containing information
+ */
+static inline
+void dsi_hal_dpi_video_packet_size(struct sprd_dsi *dsi, u16 size)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->dpi_video_packet_size)
+ ops->dpi_video_packet_size(ctx, size);
+}
+/*
+ * Specifiy the size of the packet memory write start/continue
+ * @dsi pointer to structure holding the DSI Host core information
+ * @size size of the packet
+ * note when different than zero (0) eDPI is enabled
+ */
+static inline void dsi_hal_edpi_max_pkt_size(struct sprd_dsi *dsi, u16 size)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->edpi_max_pkt_size)
+ ops->edpi_max_pkt_size(ctx, size);
+}
+
+static inline
+void dsi_hal_edpi_video_hs_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->edpi_video_hs_en)
+ ops->edpi_video_hs_en(ctx, enable);
+}
+
+/*
+ * Enable tear effect acknowledge
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ */
+static inline
+void dsi_hal_tear_effect_ack_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->tear_effect_ack_en)
+ ops->tear_effect_ack_en(ctx, enable);
+}
+/*
+ * Enable packets acknowledge request after each packet transmission
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable (1) - disable (0)
+ */
+static inline
+void dsi_hal_cmd_ack_request_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->cmd_ack_request_en)
+ ops->cmd_ack_request_en(ctx, enable);
+}
+/*
+ * Set DCS command packet transmission to transmission type
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable lp transmit in low power
+ */
+static inline
+void dsi_hal_cmd_mode_lp_cmd_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->cmd_mode_lp_cmd_en)
+ ops->cmd_mode_lp_cmd_en(ctx, enable);
+}
+/*
+ * Set DCS read command packet transmission to transmission type
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable lp transmit in low power
+ */
+static inline
+void dsi_hal_video_mode_lp_cmd_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->video_mode_lp_cmd_en)
+ ops->video_mode_lp_cmd_en(ctx, enable);
+}
+
+/*
+ * Write command header in the generic interface
+ * (which also sends DCS commands) as a subset
+ * @dsi pointer to structure holding the DSI Host core information
+ * @vc of destination
+ * @type type of DCS command
+ * @wc_lsb (if DCS, it is the DCS command)
+ * @wc_msb (only parameter of short DCS packet)
+ */
+static inline void dsi_hal_set_packet_header(struct sprd_dsi *dsi,
+ u8 vc,
+ u8 type,
+ u8 wc_lsb,
+ u8 wc_msb)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->set_packet_header)
+ ops->set_packet_header(ctx, vc, type, wc_lsb, wc_msb);
+}
+/*
+ * Write the payload of the long packet commands
+ * @dsi pointer to structure holding the DSI Host core information
+ * @payload array of bytes of payload
+ */
+static inline
+void dsi_hal_set_packet_payload(struct sprd_dsi *dsi, u32 payload)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->set_packet_payload)
+ ops->set_packet_payload(ctx, payload);
+}
+/*
+ * Write the payload of the long packet commands
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 32-bit data to hold read information
+ */
+static inline u32 dsi_hal_get_rx_payload(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->get_rx_payload)
+ return ops->get_rx_payload(ctx);
+
+ return 0;
+}
+
+/*
+ * Enable Bus Turn-around request
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable
+ */
+static inline void dsi_hal_bta_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->bta_en)
+ ops->bta_en(ctx, enable);
+}
+/*
+ * Enable EOTp reception
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable
+ */
+static inline void dsi_hal_eotp_rx_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->eotp_rx_en)
+ ops->eotp_rx_en(ctx, enable);
+}
+/*
+ * Enable EOTp transmission
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable
+ */
+static inline void dsi_hal_eotp_tx_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->eotp_tx_en)
+ ops->eotp_tx_en(ctx, enable);
+}
+/*
+ * Enable ECC reception, error correction and reporting
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable
+ */
+static inline void dsi_hal_ecc_rx_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->ecc_rx_en)
+ ops->ecc_rx_en(ctx, enable);
+}
+/*
+ * Enable CRC reception, error reporting
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable
+ */
+static inline void dsi_hal_crc_rx_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->crc_rx_en)
+ ops->crc_rx_en(ctx, enable);
+}
+/*
+ * Get status of read command
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if bta was returned
+ */
+static inline bool dsi_hal_is_bta_returned(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_bta_returned)
+ return ops->is_bta_returned(ctx);
+
+ return true;
+}
+/*
+ * Get the FULL status of generic read payload fifo
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if fifo full
+ */
+static inline bool dsi_hal_is_rx_payload_fifo_full(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_rx_payload_fifo_full)
+ return ops->is_rx_payload_fifo_full(ctx);
+
+ return false;
+}
+/*
+ * Get the EMPTY status of generic read payload fifo
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if fifo empty
+ */
+static inline bool dsi_hal_is_rx_payload_fifo_empty(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_rx_payload_fifo_empty)
+ return ops->is_rx_payload_fifo_empty(ctx);
+
+ return true;
+}
+/*
+ * Get the FULL status of generic write payload fifo
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if fifo full
+ */
+static inline bool dsi_hal_is_tx_payload_fifo_full(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_tx_payload_fifo_full)
+ return ops->is_tx_payload_fifo_full(ctx);
+
+ return false;
+}
+/*
+ * Get the EMPTY status of generic write payload fifo
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if fifo empty
+ */
+static inline bool dsi_hal_is_tx_payload_fifo_empty(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_tx_payload_fifo_empty)
+ return ops->is_tx_payload_fifo_empty(ctx);
+
+ return true;
+}
+/*
+ * Get the FULL status of generic command fifo
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if fifo full
+ */
+static inline bool dsi_hal_is_tx_cmd_fifo_full(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_tx_cmd_fifo_full)
+ return ops->is_tx_cmd_fifo_full(ctx);
+
+ return false;
+}
+/*
+ * Get the EMPTY status of generic command fifo
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return 1 if fifo empty
+ */
+static inline bool dsi_hal_is_tx_cmd_fifo_empty(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->is_tx_cmd_fifo_empty)
+ return ops->is_tx_cmd_fifo_empty(ctx);
+
+ return true;
+}
+
+static inline
+bool dsi_hal_wait_tx_payload_fifo_empty(struct sprd_dsi *dsi)
+{
+ int timeout;
+
+ for (timeout = 0; timeout < 5000; timeout++) {
+ if (dsi_hal_is_tx_payload_fifo_empty(dsi))
+ return true;
+ udelay(1);
+ }
+
+ pr_err("tx payload fifo is not empty\n");
+ return false;
+}
+
+static inline bool dsi_hal_wait_tx_cmd_fifo_empty(struct sprd_dsi *dsi)
+{
+ int timeout;
+
+ for (timeout = 0; timeout < 5000; timeout++) {
+ if (dsi_hal_is_tx_cmd_fifo_empty(dsi))
+ return true;
+ udelay(1);
+ }
+
+ pr_err("tx cmd fifo is not empty\n");
+ return false;
+}
+
+static inline bool dsi_hal_wait_rd_resp_completed(struct sprd_dsi *dsi)
+{
+ int timeout;
+
+ for (timeout = 0; timeout < 10000; timeout++) {
+ udelay(10);
+ if (dsi_hal_is_bta_returned(dsi))
+ return true;
+ }
+
+ pr_err("wait read response time out\n");
+ return false;
+}
+
+/* only if DPI */
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch data lane from high speed to low power
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle
+ */
+static inline
+void dsi_hal_datalane_hs2lp_config(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->datalane_hs2lp_config)
+ ops->datalane_hs2lp_config(ctx, byte_cycle);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch the data lane from to low power high speed
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle
+ */
+static inline
+void dsi_hal_datalane_lp2hs_config(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->datalane_lp2hs_config)
+ ops->datalane_lp2hs_config(ctx, byte_cycle);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch clock lane from high speed to low power
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle
+ */
+static inline
+void dsi_hal_clklane_hs2lp_config(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->clklane_hs2lp_config)
+ ops->clklane_hs2lp_config(ctx, byte_cycle);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch clock lane from to low power high speed
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle
+ */
+static inline
+void dsi_hal_clklane_lp2hs_config(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->clklane_lp2hs_config)
+ ops->clklane_lp2hs_config(ctx, byte_cycle);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to turn the bus around to start receiving
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle
+ */
+static inline
+void dsi_hal_max_read_time(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->max_read_time)
+ ops->max_read_time(ctx, byte_cycle);
+}
+/*
+ * Enable the automatic mechanism to stop providing clock in the clock
+ * lane when time allows
+ * @dsi pointer to structure holding the DSI Host core information
+ * @enable
+ */
+static inline void dsi_hal_nc_clk_en(struct sprd_dsi *dsi, int enable)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->nc_clk_en)
+ ops->nc_clk_en(ctx, enable);
+}
+/*
+ * Write transmission escape timeout
+ * a safe guard so that the state machine would reset if transmission
+ * takes too long
+ * @dsi pointer to structure holding the DSI Host core information
+ * @div escape clk division
+ */
+static inline void dsi_hal_tx_escape_division(struct sprd_dsi *dsi, u8 div)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->tx_escape_division)
+ ops->tx_escape_division(ctx, div);
+}
+/* PRESP Time outs */
+/*
+ * configure timeout divisions (so they would have more clock ticks)
+ * @dsi pointer to structure holding the DSI Host core information
+ * @div no of hs cycles before transiting back to LP in
+ * (lane_clk / byte_clk_division_factor)
+ */
+static inline
+void dsi_hal_timeout_clock_division(struct sprd_dsi *dsi, u8 div)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->timeout_clock_division)
+ ops->timeout_clock_division(ctx, div);
+}
+/*
+ * Configure the Low power receive time out
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle count of byte cycles
+ */
+static inline
+void dsi_hal_lp_rx_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->lp_rx_timeout)
+ ops->lp_rx_timeout(ctx, byte_cycle);
+}
+/*
+ * Configure a high speed transmission time out
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle
+ */
+static inline
+void dsi_hal_hs_tx_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->hs_tx_timeout)
+ ops->hs_tx_timeout(ctx, byte_cycle);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after bus turn around
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle period for which the DWC_mipi_dsi_hal_host keeps
+ * the link still, after sending a BTA operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static inline
+void dsi_hal_bta_presp_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->bta_presp_timeout)
+ ops->bta_presp_timeout(ctx, byte_cycle);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after LP data
+ * transmission write requests
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle period for which the DWC_mipi_dsi_hal_host keeps
+ * the link still, after sending a low power write operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static inline
+void dsi_hal_lp_write_presp_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->lp_write_presp_timeout)
+ ops->lp_write_presp_timeout(ctx, byte_cycle);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after LP data
+ * transmission read requests
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle period for which the DWC_mipi_dsi_hal_host keeps
+ * the link still, after sending a low power read operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static inline
+void dsi_hal_lp_read_presp_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->lp_read_presp_timeout)
+ ops->lp_read_presp_timeout(ctx, byte_cycle);
+}
+/*
+ * Timeout for peripheral (for controller to stay still) after HS data
+ * transmission write requests
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle period for which the DWC_mipi_dsi_hal_host keeps
+ * the link still, after sending a high-speed write operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static inline
+void dsi_hal_hs_write_presp_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->hs_write_presp_timeout)
+ ops->hs_write_presp_timeout(ctx, byte_cycle);
+}
+/*
+ * Timeout for peripheral between HS data transmission read requests
+ * @dsi pointer to structure holding the DSI Host core information
+ * @byte_cycle period for which the DWC_mipi_dsi_hal_host keeps
+ * the link still, after sending a high-speed read operation. This period is
+ * measured in cycles of lanebyteclk
+ */
+static inline
+void dsi_hal_hs_read_presp_timeout(struct sprd_dsi *dsi, u16 byte_cycle)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->hs_read_presp_timeout)
+ ops->hs_read_presp_timeout(ctx, byte_cycle);
+}
+/*
+ * Get the error 0 interrupt register status
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return error status 0 value
+ */
+static inline u32 dsi_hal_int0_status(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->int0_status)
+ return ops->int0_status(ctx);
+
+ return 0;
+}
+/*
+ * Get the error 1 interrupt register status
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return error status 1 value
+ */
+static inline u32 dsi_hal_int1_status(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->int1_status)
+ return ops->int1_status(ctx);
+
+ return 0;
+}
+/*
+ * Get the error 2 interrupt register status
+ * @dsi pointer to structure holding the DSI Host core information
+ * @return error status 2 value
+ */
+static inline u32 dsi_hal_int2_status(struct sprd_dsi *dsi)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->int2_status)
+ return ops->int2_status(ctx);
+
+ return 0;
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 0 source
+ * @dsi pointer to structure holding the DSI Host core information
+ * @mask to be written to the register
+ */
+static inline void dsi_hal_int0_mask(struct sprd_dsi *dsi, u32 mask)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->int0_mask)
+ ops->int0_mask(ctx, mask);
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 0 source
+ * @dsi pointer to structure holding the DSI Host core information
+ * @mask the mask to be written to the register
+ */
+static inline void dsi_hal_int1_mask(struct sprd_dsi *dsi, u32 mask)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->int1_mask)
+ ops->int1_mask(ctx, mask);
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 0 source
+ * @dsi pointer to structure holding the DSI Host core information
+ * @mask the mask to be written to the register
+ */
+static inline void dsi_hal_int2_mask(struct sprd_dsi *dsi, u32 mask)
+{
+ struct dsi_core_ops *ops = dsi->core;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ops->int2_mask)
+ ops->int2_mask(ctx, mask);
+}
+
+#endif /* MIPI_DSI_HAL_H_ */
diff --git a/drivers/gpu/drm/sprd/sprd_dphy.c b/drivers/gpu/drm/sprd/sprd_dphy.c
new file mode 100644
index 0000000..ac53f8b
--- /dev/null
+++ b/drivers/gpu/drm/sprd/sprd_dphy.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2018 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "sprd_dphy.h"
+
+static int regmap_tst_io_write(void *context, u32 reg, u32 val)
+{
+ struct sprd_dphy *dphy = context;
+
+ if (val > 0xff || reg > 0xff)
+ return -EINVAL;
+
+ pr_debug("reg = 0x%02x, val = 0x%02x\n", reg, val);
+
+ sprd_dphy_test_write(dphy, reg, val);
+
+ return 0;
+}
+
+static int regmap_tst_io_read(void *context, u32 reg, u32 *val)
+{
+ struct sprd_dphy *dphy = context;
+ int ret;
+
+ if (reg > 0xff)
+ return -EINVAL;
+
+ ret = sprd_dphy_test_read(dphy, reg);
+ if (ret < 0)
+ return ret;
+
+ *val = ret;
+
+ pr_debug("reg = 0x%02x, val = 0x%02x\n", reg, *val);
+ return 0;
+}
+
+static struct regmap_bus regmap_tst_io = {
+ .reg_write = regmap_tst_io_write,
+ .reg_read = regmap_tst_io_read,
+};
+
+static const struct regmap_config byte_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static const struct regmap_config word_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+};
+
+static int sprd_dphy_regmap_init(struct sprd_dphy *dphy)
+{
+ struct dphy_context *ctx = &dphy->ctx;
+ struct regmap *regmap;
+
+ if (ctx->apbbase)
+ regmap = devm_regmap_init_mmio(&dphy->dev,
+ (void __iomem *)ctx->apbbase, &word_config);
+ else
+ regmap = devm_regmap_init(&dphy->dev, ®map_tst_io,
+ dphy, &byte_config);
+
+ if (IS_ERR(regmap)) {
+ DRM_ERROR("dphy regmap init failed\n");
+ return PTR_ERR(regmap);
+ }
+
+ ctx->regmap = regmap;
+
+ return 0;
+}
+
+void sprd_dphy_ulps_enter(struct sprd_dphy *dphy)
+{
+ DRM_INFO("dphy ulps enter\n");
+ sprd_dphy_hs_clk_en(dphy, false);
+ sprd_dphy_data_ulps_enter(dphy);
+ sprd_dphy_clk_ulps_enter(dphy);
+}
+
+void sprd_dphy_ulps_exit(struct sprd_dphy *dphy)
+{
+ DRM_INFO("dphy ulps exit\n");
+ sprd_dphy_force_pll(dphy, true);
+ sprd_dphy_clk_ulps_exit(dphy);
+ sprd_dphy_data_ulps_exit(dphy);
+ sprd_dphy_force_pll(dphy, false);
+}
+
+int sprd_dphy_resume(struct sprd_dphy *dphy)
+{
+ int ret;
+
+ mutex_lock(&dphy->ctx.lock);
+ ret = sprd_dphy_configure(dphy);
+ if (ret) {
+ mutex_unlock(&dphy->ctx.lock);
+ DRM_ERROR("sprd dphy init failed\n");
+ return -EINVAL;
+ }
+
+ dphy->ctx.is_enabled = true;
+ mutex_unlock(&dphy->ctx.lock);
+
+ DRM_INFO("dphy resume OK\n");
+ return ret;
+}
+
+int sprd_dphy_suspend(struct sprd_dphy *dphy)
+{
+ int ret;
+
+ mutex_lock(&dphy->ctx.lock);
+ ret = sprd_dphy_close(dphy);
+ if (ret)
+ DRM_ERROR("sprd dphy close failed\n");
+
+ dphy->ctx.is_enabled = false;
+ mutex_unlock(&dphy->ctx.lock);
+
+ DRM_INFO("dphy suspend OK\n");
+ return ret;
+}
+
+static int sprd_dphy_context_init(struct sprd_dphy *dphy,
+ struct device_node *np)
+{
+ struct resource r;
+
+ dphy->ctx.is_enabled = true;
+
+ if (!of_address_to_resource(np, 0, &r)) {
+ dphy->ctx.ctrlbase = (unsigned long)
+ ioremap_nocache(r.start, resource_size(&r));
+ if (dphy->ctx.ctrlbase == 0) {
+ DRM_ERROR("dphy ctrlbase ioremap failed\n");
+ return -EFAULT;
+ }
+ } else {
+ DRM_ERROR("parse dphy ctrl reg base failed\n");
+ return -EINVAL;
+ }
+
+ if (!of_address_to_resource(np, 1, &r)) {
+ DRM_INFO("this dphy has apb reg base\n");
+ dphy->ctx.apbbase = (unsigned long)
+ ioremap_nocache(r.start, resource_size(&r));
+ if (dphy->ctx.apbbase == 0) {
+ DRM_ERROR("dphy apbbase ioremap failed\n");
+ return -EFAULT;
+ }
+ }
+
+ mutex_init(&dphy->ctx.lock);
+
+ return 0;
+}
+
+static const struct dphy_ops sharkl3_dphy = {
+ .ppi = &dsi_ctrl_ppi_ops,
+ .pll = &sharkle_dphy_pll_ops,
+};
+
+static const struct of_device_id dphy_match_table[] = {
+ { .compatible = "sprd,sharkl3-dsi-phy",
+ .data = &sharkl3_dphy },
+ { },
+};
+
+static int sprd_dphy_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *of_id =
+ of_match_node(dphy_match_table, np);
+ const struct dphy_ops *pdata;
+ struct sprd_dphy *dphy;
+ struct device *dsi_dev;
+ int ret;
+
+ dphy = devm_kzalloc(&pdev->dev, sizeof(*dphy), GFP_KERNEL);
+ if (!dphy)
+ return -ENOMEM;
+
+ dsi_dev = sprd_disp_pipe_get_input(&pdev->dev);
+ if (!dsi_dev)
+ return -ENODEV;
+
+ pdata = of_device_get_match_data(&pdev->dev);
+ if (pdata) {
+ dphy->ppi = pdata->ppi;
+ dphy->pll = pdata->pll;
+ } else {
+ DRM_ERROR("Can't get %s ops data\n", of_id->name);
+ return -EINVAL;
+ }
+
+ ret = sprd_dphy_context_init(dphy, pdev->dev.of_node);
+ if (ret)
+ return ret;
+
+ sprd_dphy_regmap_init(dphy);
+ platform_set_drvdata(pdev, dphy);
+
+ DRM_INFO("dphy driver probe success\n");
+
+ return 0;
+}
+
+struct platform_driver sprd_dphy_driver = {
+ .probe = sprd_dphy_probe,
+ .driver = {
+ .name = "sprd-dphy-drv",
+ .of_match_table = dphy_match_table,
+ }
+};
+
+MODULE_AUTHOR("Leon He <leon.he at unisoc.com>");
+MODULE_AUTHOR("Kevin Tang <kevin.tang at unisoc.com>");
+MODULE_DESCRIPTION("Unisoc SoC MIPI DSI PHY driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/sprd/sprd_dphy.h b/drivers/gpu/drm/sprd/sprd_dphy.h
new file mode 100644
index 0000000..bcf0481
--- /dev/null
+++ b/drivers/gpu/drm/sprd/sprd_dphy.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#ifndef _SPRD_DPHY_H_
+#define _SPRD_DPHY_H_
+
+#include <asm/types.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include <drm/drm_print.h>
+
+#include "disp_lib.h"
+
+struct dphy_context {
+ struct regmap *regmap;
+ unsigned long ctrlbase;
+ unsigned long apbbase;
+ struct mutex lock;
+ u32 freq;
+ u8 lanes;
+ u8 capability;
+ bool is_enabled;
+};
+
+struct dphy_pll_ops {
+ int (*pll_config)(struct dphy_context *ctx);
+ int (*timing_config)(struct dphy_context *ctx);
+ int (*hop_config)(struct dphy_context *ctx, int delta, int period);
+ int (*ssc_en)(struct dphy_context *ctx, bool en);
+ void (*force_pll)(struct dphy_context *ctx, int force);
+};
+
+struct dphy_ppi_ops {
+ void (*rstz)(struct dphy_context *ctx, int level);
+ void (*shutdownz)(struct dphy_context *ctx, int level);
+ void (*force_pll)(struct dphy_context *ctx, int force);
+ void (*clklane_ulps_rqst)(struct dphy_context *ctx, int en);
+ void (*clklane_ulps_exit)(struct dphy_context *ctx, int en);
+ void (*datalane_ulps_rqst)(struct dphy_context *ctx, int en);
+ void (*datalane_ulps_exit)(struct dphy_context *ctx, int en);
+ void (*stop_wait_time)(struct dphy_context *ctx, u8 byte_clk);
+ void (*datalane_en)(struct dphy_context *ctx);
+ void (*clklane_en)(struct dphy_context *ctx, int en);
+ void (*clk_hs_rqst)(struct dphy_context *ctx, int en);
+ u8 (*is_rx_direction)(struct dphy_context *ctx);
+ u8 (*is_pll_locked)(struct dphy_context *ctx);
+ u8 (*is_rx_ulps_esc_lane0)(struct dphy_context *ctx);
+ u8 (*is_stop_state_clklane)(struct dphy_context *ctx);
+ u8 (*is_stop_state_datalane)(struct dphy_context *ctx);
+ u8 (*is_ulps_active_datalane)(struct dphy_context *ctx);
+ u8 (*is_ulps_active_clklane)(struct dphy_context *ctx);
+ void (*tst_clk)(struct dphy_context *ctx, u8 level);
+ void (*tst_clr)(struct dphy_context *ctx, u8 level);
+ void (*tst_en)(struct dphy_context *ctx, u8 level);
+ u8 (*tst_dout)(struct dphy_context *ctx);
+ void (*tst_din)(struct dphy_context *ctx, u8 data);
+ void (*bist_en)(struct dphy_context *ctx, int en);
+ u8 (*is_bist_ok)(struct dphy_context *ctx);
+};
+
+struct dphy_ops {
+ struct dphy_ppi_ops *ppi;
+ struct dphy_pll_ops *pll;
+};
+
+struct sprd_dphy {
+ struct device dev;
+ struct dphy_context ctx;
+ struct dphy_ppi_ops *ppi;
+ struct dphy_pll_ops *pll;
+};
+
+extern struct dphy_ppi_ops dsi_ctrl_ppi_ops;
+extern struct dphy_pll_ops sharkle_dphy_pll_ops;
+extern struct dphy_glb_ops sharkl3_dphy_glb_ops;
+
+void sprd_dphy_ulps_enter(struct sprd_dphy *dphy);
+void sprd_dphy_ulps_exit(struct sprd_dphy *dphy);
+int sprd_dphy_resume(struct sprd_dphy *dphy);
+int sprd_dphy_suspend(struct sprd_dphy *dphy);
+
+int sprd_dphy_configure(struct sprd_dphy *dphy);
+void sprd_dphy_reset(struct sprd_dphy *dphy);
+void sprd_dphy_shutdown(struct sprd_dphy *dphy);
+int sprd_dphy_hop_config(struct sprd_dphy *dphy, int delta, int period);
+int sprd_dphy_ssc_en(struct sprd_dphy *dphy, bool en);
+int sprd_dphy_close(struct sprd_dphy *dphy);
+int sprd_dphy_data_ulps_enter(struct sprd_dphy *dphy);
+int sprd_dphy_data_ulps_exit(struct sprd_dphy *dphy);
+int sprd_dphy_clk_ulps_enter(struct sprd_dphy *dphy);
+int sprd_dphy_clk_ulps_exit(struct sprd_dphy *dphy);
+void sprd_dphy_force_pll(struct sprd_dphy *dphy, bool enable);
+void sprd_dphy_hs_clk_en(struct sprd_dphy *dphy, bool enable);
+void sprd_dphy_test_write(struct sprd_dphy *dphy, u8 address, u8 data);
+u8 sprd_dphy_test_read(struct sprd_dphy *dphy, u8 address);
+
+#endif /* _SPRD_DPHY_H_ */
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c
new file mode 100644
index 0000000..de749b1
--- /dev/null
+++ b/drivers/gpu/drm/sprd/sprd_dsi.c
@@ -0,0 +1,652 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/of_graph.h>
+#include <linux/pm_runtime.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+
+#include "disp_lib.h"
+#include "sprd_crtc.h"
+#include "sprd_dpu.h"
+#include "sprd_dsi.h"
+#include "dsi/sprd_dsi_api.h"
+
+#define encoder_to_dsi(encoder) \
+ container_of(encoder, struct sprd_dsi, encoder)
+#define host_to_dsi(host) \
+ container_of(host, struct sprd_dsi, host)
+#define connector_to_dsi(connector) \
+ container_of(connector, struct sprd_dsi, connector)
+
+static DEFINE_MUTEX(dsi_lock);
+
+static int sprd_dsi_resume(struct sprd_dsi *dsi)
+{
+ sprd_dsi_init(dsi);
+
+ if (dsi->ctx.work_mode == DSI_MODE_VIDEO)
+ sprd_dsi_dpi_video(dsi);
+ else
+ sprd_dsi_edpi_video(dsi);
+
+ DRM_INFO("dsi resume OK\n");
+ return 0;
+}
+
+static int sprd_dsi_suspend(struct sprd_dsi *dsi)
+{
+ sprd_dsi_uninit(dsi);
+
+ DRM_INFO("dsi suspend OK\n");
+ return 0;
+}
+
+static void sprd_dsi_encoder_enable(struct drm_encoder *encoder)
+{
+ struct sprd_dsi *dsi = encoder_to_dsi(encoder);
+ struct sprd_crtc *crtc = to_sprd_crtc(encoder->crtc);
+ static bool is_enabled = true;
+
+ DRM_INFO("%s()\n", __func__);
+
+ mutex_lock(&dsi_lock);
+
+ if (dsi->ctx.is_inited) {
+ mutex_unlock(&dsi_lock);
+ DRM_ERROR("dsi is inited\n");
+ return;
+ }
+
+ if (is_enabled) {
+ is_enabled = false;
+ dsi->ctx.is_inited = true;
+ mutex_unlock(&dsi_lock);
+ return;
+ }
+
+ pm_runtime_get_sync(dsi->dev.parent);
+
+ sprd_dsi_resume(dsi);
+ sprd_dphy_resume(dsi->phy);
+
+ sprd_dsi_lp_cmd_enable(dsi, true);
+
+ if (dsi->panel) {
+ drm_panel_prepare(dsi->panel);
+ drm_panel_enable(dsi->panel);
+ }
+
+ sprd_dsi_set_work_mode(dsi, dsi->ctx.work_mode);
+ sprd_dsi_state_reset(dsi);
+
+ if (dsi->ctx.nc_clk_en)
+ sprd_dsi_nc_clk_en(dsi, true);
+ else
+ sprd_dphy_hs_clk_en(dsi->phy, true);
+
+ sprd_dpu_run(crtc->dpu);
+
+ dsi->ctx.is_inited = true;
+ mutex_unlock(&dsi_lock);
+}
+
+static void sprd_dsi_encoder_disable(struct drm_encoder *encoder)
+{
+ struct sprd_dsi *dsi = encoder_to_dsi(encoder);
+ struct sprd_crtc *crtc = to_sprd_crtc(encoder->crtc);
+
+ DRM_INFO("%s()\n", __func__);
+
+ mutex_lock(&dsi_lock);
+
+ if (!dsi->ctx.is_inited) {
+ mutex_unlock(&dsi_lock);
+ DRM_ERROR("dsi isn't inited\n");
+ return;
+ }
+
+ sprd_dpu_stop(crtc->dpu);
+ sprd_dsi_set_work_mode(dsi, DSI_MODE_CMD);
+ sprd_dsi_lp_cmd_enable(dsi, true);
+
+ if (dsi->panel) {
+ drm_panel_disable(dsi->panel);
+ sprd_dphy_ulps_enter(dsi->phy);
+ drm_panel_unprepare(dsi->panel);
+ }
+
+ sprd_dphy_suspend(dsi->phy);
+ sprd_dsi_suspend(dsi);
+
+ pm_runtime_put(dsi->dev.parent);
+
+ dsi->ctx.is_inited = false;
+ mutex_unlock(&dsi_lock);
+}
+
+static void sprd_dsi_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adj_mode)
+{
+ struct sprd_dsi *dsi = encoder_to_dsi(encoder);
+
+ DRM_INFO("%s() set mode: %s\n", __func__, dsi->mode->name);
+}
+
+static int sprd_dsi_encoder_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ DRM_INFO("%s()\n", __func__);
+
+ return 0;
+}
+
+static const struct drm_encoder_helper_funcs sprd_encoder_helper_funcs = {
+ .atomic_check = sprd_dsi_encoder_atomic_check,
+ .mode_set = sprd_dsi_encoder_mode_set,
+ .enable = sprd_dsi_encoder_enable,
+ .disable = sprd_dsi_encoder_disable
+};
+
+static const struct drm_encoder_funcs sprd_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static int sprd_dsi_encoder_init(struct drm_device *drm,
+ struct sprd_dsi *dsi)
+{
+ struct drm_encoder *encoder = &dsi->encoder;
+ int ret;
+
+ ret = drm_encoder_init(drm, encoder, &sprd_encoder_funcs,
+ DRM_MODE_ENCODER_DSI, NULL);
+ if (ret) {
+ DRM_ERROR("failed to init dsi encoder\n");
+ return ret;
+ }
+
+ ret = sprd_drm_set_possible_crtcs(encoder, SPRD_DISPLAY_TYPE_LCD);
+ if (ret) {
+ DRM_ERROR("failed to find possible crtc\n");
+ return ret;
+ }
+
+ drm_encoder_helper_add(encoder, &sprd_encoder_helper_funcs);
+
+ return 0;
+}
+
+static int sprd_dsi_find_panel(struct sprd_dsi *dsi)
+{
+ struct device *dev = dsi->host.dev;
+ struct device_node *child, *lcds_node;
+ struct drm_panel *panel;
+
+ /* search /lcds child node first */
+ lcds_node = of_find_node_by_path("/lcds");
+ for_each_child_of_node(lcds_node, child) {
+ panel = of_drm_find_panel(child);
+ if (panel) {
+ dsi->panel = panel;
+ return 0;
+ }
+ }
+
+ /*
+ * If /lcds child node search failed, we search
+ * the child of dsi host node.
+ */
+ for_each_child_of_node(dev->of_node, child) {
+ panel = of_drm_find_panel(child);
+ if (panel) {
+ dsi->panel = panel;
+ return 0;
+ }
+ }
+
+ DRM_ERROR("of_drm_find_panel() failed\n");
+ return -ENODEV;
+}
+
+static int sprd_dsi_phy_attach(struct sprd_dsi *dsi)
+{
+ struct device *dev;
+
+ dev = sprd_disp_pipe_get_output(&dsi->dev);
+ if (!dev)
+ return -ENODEV;
+
+ dsi->phy = dev_get_drvdata(dev);
+ if (!dsi->phy) {
+ DRM_ERROR("dsi attach phy failed\n");
+ return -EINVAL;
+ }
+
+ dsi->phy->ctx.lanes = dsi->ctx.lanes;
+ dsi->phy->ctx.freq = dsi->ctx.byte_clk * 8;
+
+ return 0;
+}
+
+static int sprd_dsi_host_attach(struct mipi_dsi_host *host,
+ struct mipi_dsi_device *slave)
+{
+ struct sprd_dsi *dsi = host_to_dsi(host);
+ struct dsi_context *ctx = &dsi->ctx;
+ int ret;
+
+ DRM_INFO("%s()\n", __func__);
+
+ dsi->slave = slave;
+ ctx->lanes = slave->lanes;
+ ctx->format = slave->format;
+ ctx->byte_clk = slave->hs_rate / 8;
+ ctx->esc_clk = slave->lp_rate;
+
+ if (slave->mode_flags & MIPI_DSI_MODE_VIDEO)
+ ctx->work_mode = DSI_MODE_VIDEO;
+ else
+ ctx->work_mode = DSI_MODE_CMD;
+
+ if (slave->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
+ ctx->burst_mode = VIDEO_BURST_WITH_SYNC_PULSES;
+ else if (slave->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
+ ctx->burst_mode = VIDEO_NON_BURST_WITH_SYNC_PULSES;
+ else
+ ctx->burst_mode = VIDEO_NON_BURST_WITH_SYNC_EVENTS;
+
+ if (slave->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
+ ctx->nc_clk_en = true;
+
+ ret = sprd_dsi_phy_attach(dsi);
+ if (ret)
+ return ret;
+
+ ret = sprd_dsi_find_panel(dsi);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int sprd_dsi_host_detach(struct mipi_dsi_host *host,
+ struct mipi_dsi_device *slave)
+{
+ DRM_INFO("%s()\n", __func__);
+ /* do nothing */
+ return 0;
+}
+
+static ssize_t sprd_dsi_host_transfer(struct mipi_dsi_host *host,
+ const struct mipi_dsi_msg *msg)
+{
+ struct sprd_dsi *dsi = host_to_dsi(host);
+ const u8 *tx_buf = msg->tx_buf;
+
+ if (msg->rx_buf && msg->rx_len) {
+ u8 lsb = (msg->tx_len > 0) ? tx_buf[0] : 0;
+ u8 msb = (msg->tx_len > 1) ? tx_buf[1] : 0;
+
+ return sprd_dsi_rd_pkt(dsi, msg->channel, msg->type,
+ msb, lsb, msg->rx_buf, msg->rx_len);
+ }
+
+ if (msg->tx_buf && msg->tx_len)
+ return sprd_dsi_wr_pkt(dsi, msg->channel, msg->type,
+ tx_buf, msg->tx_len);
+
+ return 0;
+}
+
+static const struct mipi_dsi_host_ops sprd_dsi_host_ops = {
+ .attach = sprd_dsi_host_attach,
+ .detach = sprd_dsi_host_detach,
+ .transfer = sprd_dsi_host_transfer,
+};
+
+static int sprd_dsi_host_init(struct device *dev, struct sprd_dsi *dsi)
+{
+ int ret;
+
+ dsi->host.dev = dev;
+ dsi->host.ops = &sprd_dsi_host_ops;
+
+ ret = mipi_dsi_host_register(&dsi->host);
+ if (ret)
+ DRM_ERROR("failed to register dsi host\n");
+
+ return ret;
+}
+
+static int sprd_dsi_connector_get_modes(struct drm_connector *connector)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ DRM_INFO("%s()\n", __func__);
+
+ return drm_panel_get_modes(dsi->panel);
+}
+
+static enum drm_mode_status
+sprd_dsi_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ DRM_INFO("%s() mode: "DRM_MODE_FMT"\n", __func__, DRM_MODE_ARG(mode));
+
+ if (mode->type & DRM_MODE_TYPE_PREFERRED) {
+ dsi->mode = mode;
+ drm_display_mode_to_videomode(dsi->mode, &dsi->ctx.vm);
+ }
+
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+sprd_dsi_connector_best_encoder(struct drm_connector *connector)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ DRM_INFO("%s()\n", __func__);
+ return &dsi->encoder;
+}
+
+static struct drm_connector_helper_funcs sprd_dsi_connector_helper_funcs = {
+ .get_modes = sprd_dsi_connector_get_modes,
+ .mode_valid = sprd_dsi_connector_mode_valid,
+ .best_encoder = sprd_dsi_connector_best_encoder,
+};
+
+static enum drm_connector_status
+sprd_dsi_connector_detect(struct drm_connector *connector, bool force)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ DRM_INFO("%s()\n", __func__);
+
+ if (dsi->panel) {
+ drm_panel_attach(dsi->panel, connector);
+ return connector_status_connected;
+ }
+
+ return connector_status_disconnected;
+}
+
+static void sprd_dsi_connector_destroy(struct drm_connector *connector)
+{
+ DRM_INFO("%s()\n", __func__);
+
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs sprd_dsi_atomic_connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .detect = sprd_dsi_connector_detect,
+ .destroy = sprd_dsi_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int sprd_dsi_connector_init(struct drm_device *drm, struct sprd_dsi *dsi)
+{
+ struct drm_encoder *encoder = &dsi->encoder;
+ struct drm_connector *connector = &dsi->connector;
+ int ret;
+
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+ ret = drm_connector_init(drm, connector,
+ &sprd_dsi_atomic_connector_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ if (ret) {
+ DRM_ERROR("drm_connector_init() failed\n");
+ return ret;
+ }
+
+ drm_connector_helper_add(connector,
+ &sprd_dsi_connector_helper_funcs);
+
+ drm_connector_attach_encoder(connector, encoder);
+
+ return 0;
+}
+
+static int sprd_dsi_bridge_attach(struct sprd_dsi *dsi)
+{
+ struct drm_encoder *encoder = &dsi->encoder;
+ struct drm_bridge *bridge = dsi->bridge;
+ struct device *dev = dsi->host.dev;
+ struct device_node *bridge_node;
+ int ret;
+
+ bridge_node = of_graph_get_remote_node(dev->of_node, 2, 0);
+ if (!bridge_node)
+ return 0;
+
+ bridge = of_drm_find_bridge(bridge_node);
+ if (!bridge) {
+ DRM_ERROR("of_drm_find_bridge() failed\n");
+ return -ENODEV;
+ }
+ dsi->bridge = bridge;
+
+ ret = drm_bridge_attach(encoder, bridge, NULL);
+ if (ret) {
+ DRM_ERROR("failed to attach external bridge\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static irqreturn_t sprd_dsi_isr(int irq, void *data)
+{
+ u32 status = 0;
+ struct sprd_dsi *dsi = data;
+
+ if (!dsi) {
+ DRM_ERROR("dsi pointer is NULL\n");
+ return IRQ_HANDLED;
+ }
+
+ if (dsi->ctx.irq0 == irq)
+ status = sprd_dsi_int_status(dsi, 0);
+ else if (dsi->ctx.irq1 == irq)
+ status = sprd_dsi_int_status(dsi, 1);
+
+ if (status & DSI_INT_STS_NEED_SOFT_RESET)
+ sprd_dsi_state_reset(dsi);
+
+ return IRQ_HANDLED;
+}
+
+static int sprd_dsi_irq_request(struct sprd_dsi *dsi)
+{
+ int ret;
+ int irq0, irq1;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ irq0 = irq_of_parse_and_map(dsi->host.dev->of_node, 0);
+ if (irq0) {
+ DRM_INFO("dsi irq0 num = %d\n", irq0);
+ ret = request_irq(irq0, sprd_dsi_isr, 0, "DSI_INT0", dsi);
+ if (ret) {
+ DRM_ERROR("dsi failed to request irq int0!\n");
+ return -EINVAL;
+ }
+ }
+ ctx->irq0 = irq0;
+
+ irq1 = irq_of_parse_and_map(dsi->host.dev->of_node, 1);
+ if (irq1) {
+ DRM_INFO("dsi irq1 num = %d\n", irq1);
+ ret = request_irq(irq1, sprd_dsi_isr, 0, "DSI_INT1", dsi);
+ if (ret) {
+ DRM_ERROR("dsi failed to request irq int1!\n");
+ return -EINVAL;
+ }
+ }
+ ctx->irq1 = irq1;
+
+ return 0;
+}
+
+static int sprd_dsi_bind(struct device *dev, struct device *master, void *data)
+{
+ struct drm_device *drm = data;
+ struct sprd_dsi *dsi = dev_get_drvdata(dev);
+ int ret;
+
+ ret = sprd_dsi_encoder_init(drm, dsi);
+ if (ret)
+ goto cleanup_host;
+
+ ret = sprd_dsi_connector_init(drm, dsi);
+ if (ret)
+ goto cleanup_encoder;
+
+ ret = sprd_dsi_bridge_attach(dsi);
+ if (ret)
+ goto cleanup_connector;
+
+ ret = sprd_dsi_irq_request(dsi);
+ if (ret)
+ goto cleanup_connector;
+
+ return 0;
+
+cleanup_connector:
+ drm_connector_cleanup(&dsi->connector);
+cleanup_encoder:
+ drm_encoder_cleanup(&dsi->encoder);
+cleanup_host:
+ mipi_dsi_host_unregister(&dsi->host);
+ return ret;
+}
+
+static void sprd_dsi_unbind(struct device *dev,
+ struct device *master, void *data)
+{
+ /* do nothing */
+ DRM_INFO("%s()\n", __func__);
+
+}
+
+static const struct component_ops dsi_component_ops = {
+ .bind = sprd_dsi_bind,
+ .unbind = sprd_dsi_unbind,
+};
+
+static int sprd_dsi_context_init(struct sprd_dsi *dsi, struct device_node *np)
+{
+ struct dsi_context *ctx = &dsi->ctx;
+ struct resource r;
+
+ if (of_address_to_resource(np, 0, &r)) {
+ DRM_ERROR("parse dsi ctrl reg base failed\n");
+ return -ENODEV;
+ }
+ ctx->base = (unsigned long)
+ ioremap_nocache(r.start, resource_size(&r));
+ if (ctx->base == 0) {
+ DRM_ERROR("dsi ctrl reg base ioremap failed\n");
+ return -ENODEV;
+ }
+
+ ctx->data_hs2lp = 120;
+ ctx->data_lp2hs = 500;
+ ctx->clk_hs2lp = 4;
+ ctx->clk_lp2hs = 15;
+ ctx->max_rd_time = 6000;
+ ctx->int0_mask = 0xffffffff;
+ ctx->int1_mask = 0xffffffff;
+
+ return 0;
+}
+
+static const struct dsi_ops sharkl3_dsi = {
+ .core = &dsi_ctrl_r1p0_ops,
+};
+
+static const struct of_device_id dsi_match_table[] = {
+ { .compatible = "sprd,sharkl3-dsi-host",
+ .data = &sharkl3_dsi },
+ { },
+};
+
+static int sprd_dsi_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const struct of_device_id *of_id =
+ of_match_node(dsi_match_table, np);
+ const struct dsi_ops *pdata;
+ struct sprd_dsi *dsi;
+ int ret;
+
+ dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
+ if (!dsi) {
+ DRM_ERROR("failed to allocate dsi data.\n");
+ return -ENOMEM;
+ }
+
+ pdata = of_device_get_match_data(&pdev->dev);
+ if (pdata) {
+ dsi->core = pdata->core;
+ } else {
+ DRM_ERROR("Can't get %s ops data\n", of_id->name);
+ return -EINVAL;
+ }
+
+ ret = sprd_dsi_context_init(dsi, np);
+ if (ret)
+ return -EINVAL;
+
+ platform_set_drvdata(pdev, dsi);
+
+ ret = sprd_dsi_host_init(&pdev->dev, dsi);
+ if (ret)
+ return ret;
+
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_get_noresume(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return component_add(&pdev->dev, &dsi_component_ops);
+}
+
+static int sprd_dsi_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &dsi_component_ops);
+
+ return 0;
+}
+
+struct platform_driver sprd_dsi_driver = {
+ .probe = sprd_dsi_probe,
+ .remove = sprd_dsi_remove,
+ .driver = {
+ .name = "sprd-dsi-drv",
+ .of_match_table = dsi_match_table,
+ },
+};
+
+MODULE_AUTHOR("Leon He <leon.he at unisoc.com>");
+MODULE_AUTHOR("Kevin Tang <kevin.tang at unisoc.com>");
+MODULE_DESCRIPTION("Unisoc MIPI DSI HOST Controller Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.h b/drivers/gpu/drm/sprd/sprd_dsi.h
new file mode 100644
index 0000000..c22011f
--- /dev/null
+++ b/drivers/gpu/drm/sprd/sprd_dsi.h
@@ -0,0 +1,192 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Unisoc Inc.
+ */
+
+#ifndef __SPRD_DSI_H__
+#define __SPRD_DSI_H__
+
+#include <linux/of.h>
+#include <linux/device.h>
+#include <video/videomode.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_print.h>
+#include <drm/drm_panel.h>
+
+#include "disp_lib.h"
+#include "sprd_dphy.h"
+
+#define DSI_INT_STS_NEED_SOFT_RESET BIT(0)
+#define DSI_INT_STS_NEED_HARD_RESET BIT(1)
+
+enum dsi_work_mode {
+ DSI_MODE_CMD = 0,
+ DSI_MODE_VIDEO
+};
+
+enum video_burst_mode {
+ VIDEO_NON_BURST_WITH_SYNC_PULSES = 0,
+ VIDEO_NON_BURST_WITH_SYNC_EVENTS,
+ VIDEO_BURST_WITH_SYNC_PULSES
+};
+
+enum dsi_color_coding {
+ COLOR_CODE_16BIT_CONFIG1 = 0,
+ COLOR_CODE_16BIT_CONFIG2 = 1,
+ COLOR_CODE_16BIT_CONFIG3 = 2,
+ COLOR_CODE_18BIT_CONFIG1 = 3,
+ COLOR_CODE_18BIT_CONFIG2 = 4,
+ COLOR_CODE_24BIT = 5,
+ COLOR_CODE_20BIT_YCC422_LOOSELY = 6,
+ COLOR_CODE_24BIT_YCC422 = 7,
+ COLOR_CODE_16BIT_YCC422 = 8,
+ COLOR_CODE_30BIT = 9,
+ COLOR_CODE_36BIT = 10,
+ COLOR_CODE_12BIT_YCC420 = 11,
+ COLOR_CODE_COMPRESSTION = 12,
+ COLOR_CODE_MAX
+};
+
+struct dsi_context {
+ unsigned long base;
+ u8 channel;
+ u8 lanes;
+ u32 format;
+ u8 work_mode;
+ u8 burst_mode;
+ struct videomode vm;
+
+ int irq0;
+ int irq1;
+ u32 int0_mask;
+ u32 int1_mask;
+ bool is_inited;
+
+ /* byte clock [KHz] */
+ u32 byte_clk;
+ /* escape clock [KHz] */
+ u32 esc_clk;
+
+ /* maximum time (ns) for data lanes from HS to LP */
+ u16 data_hs2lp;
+ /* maximum time (ns) for data lanes from LP to HS */
+ u16 data_lp2hs;
+ /* maximum time (ns) for clk lanes from HS to LP */
+ u16 clk_hs2lp;
+ /* maximum time (ns) for clk lanes from LP to HS */
+ u16 clk_lp2hs;
+ /* maximum time (ns) for BTA operation - REQUIRED */
+ u16 max_rd_time;
+
+ /* is 18-bit loosely packets (valid only when BPP == 18) */
+ bool is_18_loosely;
+ /* enable receiving frame ack packets - for video mode */
+ bool frame_ack_en;
+ /* enable receiving tear effect ack packets - for cmd mode */
+ bool te_ack_en;
+ /* enable non coninuous clock for energy saving */
+ bool nc_clk_en;
+};
+
+struct dsi_core_ops {
+ bool (*check_version)(struct dsi_context *ctx);
+ void (*power_en)(struct dsi_context *ctx, int enable);
+ void (*video_mode)(struct dsi_context *ctx);
+ void (*cmd_mode)(struct dsi_context *ctx);
+ bool (*is_cmd_mode)(struct dsi_context *ctx);
+ void (*rx_vcid)(struct dsi_context *ctx, u8 vc);
+ void (*video_vcid)(struct dsi_context *ctx, u8 vc);
+ void (*dpi_video_burst_mode)(struct dsi_context *ctx, int mode);
+ void (*dpi_color_coding)(struct dsi_context *ctx, int coding);
+ void (*dpi_18_loosely_packet_en)(struct dsi_context *ctx, int enable);
+ void (*dpi_color_mode_pol)(struct dsi_context *ctx, int active_low);
+ void (*dpi_shut_down_pol)(struct dsi_context *ctx, int active_low);
+ void (*dpi_hsync_pol)(struct dsi_context *ctx, int active_low);
+ void (*dpi_vsync_pol)(struct dsi_context *ctx, int active_low);
+ void (*dpi_data_en_pol)(struct dsi_context *ctx, int active_low);
+ void (*dpi_sig_delay)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*dpi_hline_time)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*dpi_hsync_time)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*dpi_hbp_time)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*dpi_vact)(struct dsi_context *ctx, u16 lines);
+ void (*dpi_vfp)(struct dsi_context *ctx, u16 lines);
+ void (*dpi_vbp)(struct dsi_context *ctx, u16 lines);
+ void (*dpi_vsync)(struct dsi_context *ctx, u16 lines);
+ void (*dpi_hporch_lp_en)(struct dsi_context *ctx, int enable);
+ void (*dpi_vporch_lp_en)(struct dsi_context *ctx, int enable);
+ void (*dpi_frame_ack_en)(struct dsi_context *ctx, int enable);
+ void (*dpi_null_packet_en)(struct dsi_context *ctx, int enable);
+ void (*dpi_multi_packet_en)(struct dsi_context *ctx, int enable);
+ void (*dpi_chunk_num)(struct dsi_context *ctx, u16 no);
+ void (*dpi_null_packet_size)(struct dsi_context *ctx, u16 size);
+ void (*dpi_video_packet_size)(struct dsi_context *ctx, u16 size);
+ void (*edpi_max_pkt_size)(struct dsi_context *ctx, u16 size);
+ void (*edpi_video_hs_en)(struct dsi_context *ctx, int enable);
+ void (*tear_effect_ack_en)(struct dsi_context *ctx, int enable);
+ void (*cmd_ack_request_en)(struct dsi_context *ctx, int enable);
+ void (*cmd_mode_lp_cmd_en)(struct dsi_context *ctx, int enable);
+ void (*video_mode_lp_cmd_en)(struct dsi_context *ctx, int enable);
+ void (*set_packet_header)(struct dsi_context *ctx, u8 vc, u8 type,
+ u8 wc_lsb, u8 wc_msb);
+ void (*set_packet_payload)(struct dsi_context *ctx, u32 payload);
+ u32 (*get_rx_payload)(struct dsi_context *ctx);
+ void (*bta_en)(struct dsi_context *ctx, int enable);
+ void (*eotp_rx_en)(struct dsi_context *ctx, int enable);
+ void (*eotp_tx_en)(struct dsi_context *ctx, int enable);
+ void (*ecc_rx_en)(struct dsi_context *ctx, int enable);
+ void (*crc_rx_en)(struct dsi_context *ctx, int enable);
+ bool (*is_bta_returned)(struct dsi_context *ctx);
+ bool (*is_rx_payload_fifo_full)(struct dsi_context *ctx);
+ bool (*is_rx_payload_fifo_empty)(struct dsi_context *ctx);
+ bool (*is_tx_payload_fifo_full)(struct dsi_context *ctx);
+ bool (*is_tx_payload_fifo_empty)(struct dsi_context *ctx);
+ bool (*is_tx_cmd_fifo_full)(struct dsi_context *ctx);
+ bool (*is_tx_cmd_fifo_empty)(struct dsi_context *ctx);
+ void (*datalane_hs2lp_config)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*datalane_lp2hs_config)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*clklane_hs2lp_config)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*clklane_lp2hs_config)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*max_read_time)(struct dsi_context *ctx, u16 byte_cycle);
+ void (*nc_clk_en)(struct dsi_context *ctx, int enable);
+ void (*tx_escape_division)(struct dsi_context *ctx, u8 div);
+ void (*timeout_clock_division)(struct dsi_context *ctx, u8 div);
+ void (*lp_rx_timeout)(struct dsi_context *ctx, u16 count);
+ void (*hs_tx_timeout)(struct dsi_context *ctx, u16 count);
+ void (*bta_presp_timeout)(struct dsi_context *ctx, u16 byteclk);
+ void (*lp_write_presp_timeout)(struct dsi_context *ctx, u16 byteclk);
+ void (*lp_read_presp_timeout)(struct dsi_context *ctx, u16 byteclk);
+ void (*hs_write_presp_timeout)(struct dsi_context *ctx, u16 byteclk);
+ void (*hs_read_presp_timeout)(struct dsi_context *ctx, u16 byteclk);
+ u32 (*int0_status)(struct dsi_context *ctx);
+ u32 (*int1_status)(struct dsi_context *ctx);
+ u32 (*int2_status)(struct dsi_context *ctx);
+ void (*int0_mask)(struct dsi_context *ctx, u32 mask);
+ void (*int1_mask)(struct dsi_context *ctx, u32 mask);
+ void (*int2_mask)(struct dsi_context *ctx, u32 mask);
+};
+
+struct dsi_ops {
+ struct dsi_core_ops *core;
+};
+
+struct sprd_dsi {
+ struct device dev;
+ struct mipi_dsi_host host;
+ struct mipi_dsi_device *slave;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+ struct drm_bridge *bridge;
+ struct drm_panel *panel;
+ struct drm_display_mode *mode;
+ struct sprd_dphy *phy;
+ struct dsi_core_ops *core;
+ struct dsi_context ctx;
+};
+
+extern struct dsi_core_ops dsi_ctrl_r1p0_ops;
+
+#endif /* __SPRD_DSI_H__ */
--
2.7.4
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