[PATCH 11/14] drm/mgag200: Provide per-device callbacks for PIXPLLC
Thomas Zimmermann
tzimmermann at suse.de
Fri Jul 8 09:39:26 UTC 2022
Move the PIXPLLC code into per-model source files and wire it up
with per-model callbacks. No functional changes.
The PIXPLLC pixel-clock is part of the CRTC, but really separate
hardware that varies with each model of the G200. Move the PIXPLLC
code for each model into the per-model source file and call it from
CRTC helpers via device functions.
This allows to remove struct mgag200_pll and the related code. The
new callbacks behave like the CRTC's atomic_check and atomic_enable
functions.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
drivers/gpu/drm/mgag200/Makefile | 3 +-
drivers/gpu/drm/mgag200/mgag200_drv.h | 32 +-
drivers/gpu/drm/mgag200/mgag200_g200.c | 109 +++
drivers/gpu/drm/mgag200/mgag200_g200eh.c | 131 +++
drivers/gpu/drm/mgag200/mgag200_g200eh3.c | 59 ++
drivers/gpu/drm/mgag200/mgag200_g200er.c | 120 +++
drivers/gpu/drm/mgag200/mgag200_g200ev.c | 132 +++
drivers/gpu/drm/mgag200/mgag200_g200ew3.c | 61 ++
drivers/gpu/drm/mgag200/mgag200_g200se.c | 211 ++++-
drivers/gpu/drm/mgag200/mgag200_g200wb.c | 180 ++++
drivers/gpu/drm/mgag200/mgag200_mode.c | 20 +-
drivers/gpu/drm/mgag200/mgag200_pll.c | 997 ----------------------
12 files changed, 1026 insertions(+), 1029 deletions(-)
delete mode 100644 drivers/gpu/drm/mgag200/mgag200_pll.c
diff --git a/drivers/gpu/drm/mgag200/Makefile b/drivers/gpu/drm/mgag200/Makefile
index 94d465a2b753..182e224c460d 100644
--- a/drivers/gpu/drm/mgag200/Makefile
+++ b/drivers/gpu/drm/mgag200/Makefile
@@ -11,7 +11,6 @@ mgag200-y := \
mgag200_g200se.o \
mgag200_g200wb.o \
mgag200_i2c.o \
- mgag200_mode.o \
- mgag200_pll.o
+ mgag200_mode.o
obj-$(CONFIG_DRM_MGAG200) += mgag200.o
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h
index e8b338198fdb..8a7204e3ff96 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@@ -129,7 +129,6 @@
#define MGAG200_MAX_FB_WIDTH 4096
struct mga_device;
-struct mgag200_pll;
/*
* Stores parameters for programming the PLLs
@@ -148,17 +147,6 @@ struct mgag200_pll_values {
unsigned int s;
};
-struct mgag200_pll_funcs {
- int (*compute)(struct mgag200_pll *pll, long clock, struct mgag200_pll_values *pllc);
- void (*update)(struct mgag200_pll *pll, const struct mgag200_pll_values *pllc);
-};
-
-struct mgag200_pll {
- struct mga_device *mdev;
-
- const struct mgag200_pll_funcs *funcs;
-};
-
struct mgag200_crtc_state {
struct drm_crtc_state base;
@@ -247,6 +235,20 @@ struct mgag200_device_funcs {
* a new display mode.
*/
void (*enable_vidrst)(struct mga_device *mdev);
+
+ /*
+ * Validate that the given state can be programmed into PIXPLLC. On
+ * success, the calculated parameters should be stored in the CRTC's
+ * state in struct @mgag200_crtc_state.pixpllc.
+ */
+ int (*pixpllc_atomic_check)(struct drm_crtc *crtc, struct drm_atomic_state *state);
+
+ /*
+ * Program PIXPLLC from the CRTC state. The parameters should have been
+ * stored in struct @mgag200_crtc_state.pixpllc by the corresponding
+ * implementation of @pixpllc_atomic_check.
+ */
+ void (*pixpllc_atomic_update)(struct drm_crtc *crtc, struct drm_atomic_state *old_state);
};
struct mga_device {
@@ -265,7 +267,6 @@ struct mga_device {
enum mga_type type;
- struct mgag200_pll pixpll;
struct drm_plane primary_plane;
struct drm_crtc crtc;
struct drm_encoder encoder;
@@ -319,11 +320,13 @@ struct mga_device *mgag200_g200_device_create(struct pci_dev *pdev, const struct
struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
enum mga_type type);
void mgag200_g200wb_init_registers(struct mga_device *mdev);
+void mgag200_g200wb_pixpllc_atomic_update(struct drm_crtc *crtc, struct drm_atomic_state *state);
struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
enum mga_type type);
struct mga_device *mgag200_g200ev_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
enum mga_type type);
void mgag200_g200eh_init_registers(struct mga_device *mdev);
+void mgag200_g200eh_pixpllc_atomic_update(struct drm_crtc *crtc, struct drm_atomic_state *state);
struct mga_device *mgag200_g200eh_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
enum mga_type type);
struct mga_device *mgag200_g200eh3_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
@@ -345,7 +348,4 @@ void mgag200_bmc_enable_vidrst(struct mga_device *mdev);
/* mgag200_i2c.c */
int mgag200_i2c_init(struct mga_device *mdev, struct mga_i2c_chan *i2c);
- /* mgag200_pll.c */
-int mgag200_pixpll_init(struct mgag200_pll *pixpll, struct mga_device *mdev);
-
#endif /* __MGAG200_DRV_H__ */
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200.c b/drivers/gpu/drm/mgag200/mgag200_g200.c
index 5de77ef637f7..1f7dde2d7547 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200.c
@@ -3,6 +3,7 @@
#include <linux/pci.h>
#include <linux/vmalloc.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -65,6 +66,112 @@ static void mgag200_g200_init_registers(struct mgag200_g200_device *g200)
mgag200_init_registers(mdev);
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200_pixpllc_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state)
+{
+ static const int post_div_max = 7;
+ static const int in_div_min = 1;
+ static const int in_div_max = 6;
+ static const int feed_div_min = 7;
+ static const int feed_div_max = 127;
+
+ struct drm_device *dev = crtc->dev;
+ struct mgag200_g200_device *g200 = to_mgag200_g200_device(dev);
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ u8 testp, testm, testn;
+ u8 n = 0, m = 0, p, s;
+ long f_vco;
+ long computed;
+ long delta, tmp_delta;
+ long ref_clk = g200->ref_clk;
+ long p_clk_min = g200->pclk_min;
+ long p_clk_max = g200->pclk_max;
+
+ if (clock > p_clk_max) {
+ drm_err(dev, "Pixel Clock %ld too high\n", clock);
+ return -EINVAL;
+ }
+
+ if (clock < p_clk_min >> 3)
+ clock = p_clk_min >> 3;
+
+ f_vco = clock;
+ for (testp = 0;
+ testp <= post_div_max && f_vco < p_clk_min;
+ testp = (testp << 1) + 1, f_vco <<= 1)
+ ;
+ p = testp + 1;
+
+ delta = clock;
+
+ for (testm = in_div_min; testm <= in_div_max; testm++) {
+ for (testn = feed_div_min; testn <= feed_div_max; testn++) {
+ computed = ref_clk * (testn + 1) / (testm + 1);
+ if (computed < f_vco)
+ tmp_delta = f_vco - computed;
+ else
+ tmp_delta = computed - f_vco;
+ if (tmp_delta < delta) {
+ delta = tmp_delta;
+ m = testm + 1;
+ n = testn + 1;
+ }
+ }
+ }
+ f_vco = ref_clk * n / m;
+ if (f_vco < 100000)
+ s = 0;
+ else if (f_vco < 140000)
+ s = 1;
+ else if (f_vco < 180000)
+ s = 2;
+ else
+ s = 3;
+
+ drm_dbg_kms(dev, "clock: %ld vco: %ld m: %d n: %d p: %d s: %d\n",
+ clock, f_vco, m, n, p, s);
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+static void mgag200_g200_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
+}
+
/*
* DRM Device
*/
@@ -196,6 +303,8 @@ static void mgag200_g200_init_refclk(struct mgag200_g200_device *g200)
}
static const struct mgag200_device_funcs mgag200_g200_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200_pixpllc_atomic_update,
};
struct mga_device *mgag200_g200_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh.c b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
index 6acfc9eeeda9..b59ba115bda3 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/delay.h>
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -40,6 +42,133 @@ void mgag200_g200eh_init_registers(struct mga_device *mdev)
mgag200_init_registers(mdev);
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200eh_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 800000;
+ static const unsigned int vcomin = 400000;
+ static const unsigned int pllreffreq = 33333;
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta;
+ unsigned int testp, testm, testn;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+
+ for (testp = 16; testp > 0; testp >>= 1) {
+ if (clock * testp > vcomax)
+ continue;
+ if (clock * testp < vcomin)
+ continue;
+
+ for (testm = 1; testm < 33; testm++) {
+ for (testn = 17; testn < 257; testn++) {
+ computed = (pllreffreq * testn) / (testm * testp);
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ n = testn;
+ m = testm;
+ p = testp;
+ }
+ }
+ }
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+void mgag200_g200eh_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
+ int i, j, tmpcount, vcount;
+ bool pll_locked = false;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = ((pixpllcn & BIT(8)) >> 1) | pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ for (i = 0; i <= 32 && pll_locked == false; i++) {
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
+ WREG8(DAC_DATA, tmp);
+
+ tmp = RREG8(MGAREG_MEM_MISC_READ);
+ tmp |= 0x3 << 2;
+ WREG8(MGAREG_MEM_MISC_WRITE, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
+ WREG8(DAC_DATA, tmp);
+
+ udelay(500);
+
+ WREG_DAC(MGA1064_EH_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_EH_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_EH_PIX_PLLC_P, xpixpllcp);
+
+ udelay(500);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
+ tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
+ WREG8(DAC_DATA, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
+ tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
+ WREG8(DAC_DATA, tmp);
+
+ vcount = RREG8(MGAREG_VCOUNT);
+
+ for (j = 0; j < 30 && pll_locked == false; j++) {
+ tmpcount = RREG8(MGAREG_VCOUNT);
+ if (tmpcount < vcount)
+ vcount = 0;
+ if ((tmpcount - vcount) > 2)
+ pll_locked = true;
+ else
+ udelay(5);
+ }
+ }
+}
+
/*
* DRM device
*/
@@ -48,6 +177,8 @@ static const struct mgag200_device_info mgag200_g200eh_device_info =
MGAG200_DEVICE_INFO_INIT(2048, 2048, 37500, false, 1, 0, false);
static const struct mgag200_device_funcs mgag200_g200eh_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200eh_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200eh_pixpllc_atomic_update,
};
struct mga_device *mgag200_g200eh_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
index 99e00aa848e1..9998197c6446 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200eh3.c
@@ -2,10 +2,67 @@
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200eh3_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 3000000;
+ static const unsigned int vcomin = 1500000;
+ static const unsigned int pllreffreq = 25000;
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta;
+ unsigned int testp, testm, testn;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+ testp = 0;
+
+ for (testm = 150; testm >= 6; testm--) {
+ if (clock * testm > vcomax)
+ continue;
+ if (clock * testm < vcomin)
+ continue;
+ for (testn = 120; testn >= 60; testn--) {
+ computed = (pllreffreq * testn) / testm;
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ n = testn + 1;
+ m = testm + 1;
+ p = testp + 1;
+ }
+ if (delta == 0)
+ break;
+ }
+ if (delta == 0)
+ break;
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
/*
* DRM device
*/
@@ -14,6 +71,8 @@ static const struct mgag200_device_info mgag200_g200eh3_device_info =
MGAG200_DEVICE_INFO_INIT(2048, 2048, 0, false, 1, 0, false);
static const struct mgag200_device_funcs mgag200_g200eh3_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200eh3_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200eh_pixpllc_atomic_update, // same as G200EH
};
struct mga_device *mgag200_g200eh3_device_create(struct pci_dev *pdev,
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200er.c b/drivers/gpu/drm/mgag200/mgag200_g200er.c
index 76eb4776658a..b18fc5862b7c 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200er.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200er.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/delay.h>
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -40,6 +42,122 @@ static void mgag200_g200er_init_registers(struct mga_device *mdev)
WREG_ECRT(0x24, 0x5); /* G200ER specific */
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200er_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 1488000;
+ static const unsigned int vcomin = 1056000;
+ static const unsigned int pllreffreq = 48000;
+ static const unsigned int m_div_val[] = { 1, 2, 4, 8 };
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta;
+ int testr, testn, testm, testo;
+ unsigned int p, m, n, s;
+ unsigned int computed, vco;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+
+ for (testr = 0; testr < 4; testr++) {
+ if (delta == 0)
+ break;
+ for (testn = 5; testn < 129; testn++) {
+ if (delta == 0)
+ break;
+ for (testm = 3; testm >= 0; testm--) {
+ if (delta == 0)
+ break;
+ for (testo = 5; testo < 33; testo++) {
+ vco = pllreffreq * (testn + 1) /
+ (testr + 1);
+ if (vco < vcomin)
+ continue;
+ if (vco > vcomax)
+ continue;
+ computed = vco / (m_div_val[testm] * (testo + 1));
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ m = (testm | (testo << 3)) + 1;
+ n = testn + 1;
+ p = testr + 1;
+ s = testr;
+ }
+ }
+ }
+ }
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+static void mgag200_g200er_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
+ WREG8(DAC_DATA, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_REMHEADCTL_CLKDIS;
+ WREG8(DAC_DATA, tmp);
+
+ tmp = RREG8(MGAREG_MEM_MISC_READ);
+ tmp |= (0x3<<2) | 0xc0;
+ WREG8(MGAREG_MEM_MISC_WRITE, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
+ WREG8(DAC_DATA, tmp);
+
+ udelay(500);
+
+ WREG_DAC(MGA1064_ER_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_ER_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_ER_PIX_PLLC_P, xpixpllcp);
+
+ udelay(50);
+}
+
/*
* DRM device
*/
@@ -48,6 +166,8 @@ static const struct mgag200_device_info mgag200_g200er_device_info =
MGAG200_DEVICE_INFO_INIT(2048, 2048, 55000, false, 1, 0, false);
static const struct mgag200_device_funcs mgag200_g200er_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200er_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200er_pixpllc_atomic_update,
};
struct mga_device *mgag200_g200er_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ev.c b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
index e9ea09195471..95681796ccd6 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ev.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ev.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/delay.h>
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -44,6 +46,134 @@ static void mgag200_g200ev_init_registers(struct mga_device *mdev)
mgag200_init_registers(mdev);
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200ev_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 550000;
+ static const unsigned int vcomin = 150000;
+ static const unsigned int pllreffreq = 50000;
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta;
+ unsigned int testp, testm, testn;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+
+ for (testp = 16; testp > 0; testp--) {
+ if (clock * testp > vcomax)
+ continue;
+ if (clock * testp < vcomin)
+ continue;
+
+ for (testn = 1; testn < 257; testn++) {
+ for (testm = 1; testm < 17; testm++) {
+ computed = (pllreffreq * testn) /
+ (testm * testp);
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ n = testn;
+ m = testm;
+ p = testp;
+ }
+ }
+ }
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+static void mgag200_g200ev_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
+ WREG8(DAC_DATA, tmp);
+
+ tmp = RREG8(MGAREG_MEM_MISC_READ);
+ tmp |= 0x3 << 2;
+ WREG8(MGAREG_MEM_MISC_WRITE, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT);
+ tmp = RREG8(DAC_DATA);
+ WREG8(DAC_DATA, tmp & ~0x40);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
+ WREG8(DAC_DATA, tmp);
+
+ WREG_DAC(MGA1064_EV_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_EV_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_EV_PIX_PLLC_P, xpixpllcp);
+
+ udelay(50);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
+ WREG8(DAC_DATA, tmp);
+
+ udelay(500);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
+ tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
+ WREG8(DAC_DATA, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT);
+ tmp = RREG8(DAC_DATA);
+ WREG8(DAC_DATA, tmp | 0x40);
+
+ tmp = RREG8(MGAREG_MEM_MISC_READ);
+ tmp |= (0x3 << 2);
+ WREG8(MGAREG_MEM_MISC_WRITE, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
+ WREG8(DAC_DATA, tmp);
+}
+
/*
* DRM device
*/
@@ -52,6 +182,8 @@ static const struct mgag200_device_info mgag200_g200ev_device_info =
MGAG200_DEVICE_INFO_INIT(2048, 2048, 32700, false, 0, 1, false);
static const struct mgag200_device_funcs mgag200_g200ev_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200ev_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200ev_pixpllc_atomic_update,
};
struct mga_device *mgag200_g200ev_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
index 19a870120ebc..a7f5e8fe56d0 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200ew3.c
@@ -2,6 +2,7 @@
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -13,6 +14,64 @@ static void mgag200_g200ew3_init_registers(struct mga_device *mdev)
WREG_ECRT(0x34, 0x5); // G200EW3 specific
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200ew3_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 800000;
+ static const unsigned int vcomin = 400000;
+ static const unsigned int pllreffreq = 25000;
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta;
+ unsigned int testp, testm, testn, testp2;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+
+ for (testp = 1; testp < 8; testp++) {
+ for (testp2 = 1; testp2 < 8; testp2++) {
+ if (testp < testp2)
+ continue;
+ if ((clock * testp * testp2) > vcomax)
+ continue;
+ if ((clock * testp * testp2) < vcomin)
+ continue;
+ for (testm = 1; testm < 26; testm++) {
+ for (testn = 32; testn < 2048 ; testn++) {
+ computed = (pllreffreq * testn) / (testm * testp * testp2);
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ m = testm + 1;
+ n = testn + 1;
+ p = testp + 1;
+ s = testp2;
+ }
+ }
+ }
+ }
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
/*
* DRM device
*/
@@ -23,6 +82,8 @@ static const struct mgag200_device_info mgag200_g200ew3_device_info =
static const struct mgag200_device_funcs mgag200_g200ew3_device_funcs = {
.disable_vidrst = mgag200_bmc_disable_vidrst,
.enable_vidrst = mgag200_bmc_enable_vidrst,
+ .pixpllc_atomic_check = mgag200_g200ew3_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200wb_pixpllc_atomic_update, // same as G200WB
};
static resource_size_t mgag200_g200ew3_device_probe_vram(struct mga_device *mdev)
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200se.c b/drivers/gpu/drm/mgag200/mgag200_g200se.c
index 5bdc20db3810..04637b42af77 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200se.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200se.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/delay.h>
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -71,6 +73,198 @@ static void mgag200_g200se_init_registers(struct mgag200_g200se_device *g200se)
mgag200_init_registers(mdev);
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200se_00_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 320000;
+ static const unsigned int vcomin = 160000;
+ static const unsigned int pllreffreq = 25000;
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta, permitteddelta;
+ unsigned int testp, testm, testn;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+ permitteddelta = clock * 5 / 1000;
+
+ for (testp = 8; testp > 0; testp /= 2) {
+ if (clock * testp > vcomax)
+ continue;
+ if (clock * testp < vcomin)
+ continue;
+
+ for (testn = 17; testn < 256; testn++) {
+ for (testm = 1; testm < 32; testm++) {
+ computed = (pllreffreq * testn) / (testm * testp);
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ m = testm;
+ n = testn;
+ p = testp;
+ }
+ }
+ }
+ }
+
+ if (delta > permitteddelta) {
+ pr_warn("PLL delta too large\n");
+ return -EINVAL;
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+static void mgag200_g200se_00_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm | ((pixpllcn & BIT(8)) >> 1);
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
+}
+
+static int mgag200_g200se_04_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 1600000;
+ static const unsigned int vcomin = 800000;
+ static const unsigned int pllreffreq = 25000;
+ static const unsigned int pvalues_e4[] = {16, 14, 12, 10, 8, 6, 4, 2, 1};
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta, permitteddelta;
+ unsigned int testp, testm, testn;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+ unsigned int fvv;
+ unsigned int i;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+
+ if (clock < 25000)
+ clock = 25000;
+ clock = clock * 2;
+
+ /* Permited delta is 0.5% as VESA Specification */
+ permitteddelta = clock * 5 / 1000;
+
+ for (i = 0 ; i < ARRAY_SIZE(pvalues_e4); i++) {
+ testp = pvalues_e4[i];
+
+ if ((clock * testp) > vcomax)
+ continue;
+ if ((clock * testp) < vcomin)
+ continue;
+
+ for (testn = 50; testn <= 256; testn++) {
+ for (testm = 1; testm <= 32; testm++) {
+ computed = (pllreffreq * testn) / (testm * testp);
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ m = testm;
+ n = testn;
+ p = testp;
+ }
+ }
+ }
+ }
+
+ fvv = pllreffreq * n / m;
+ fvv = (fvv - 800000) / 50000;
+ if (fvv > 15)
+ fvv = 15;
+ s = fvv << 1;
+
+ if (delta > permitteddelta) {
+ pr_warn("PLL delta too large\n");
+ return -EINVAL;
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+static void mgag200_g200se_04_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = pixpllcm | ((pixpllcn & BIT(8)) >> 1);
+ xpixpllcn = pixpllcn;
+ xpixpllcp = (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
+
+ WREG_DAC(0x1a, 0x09);
+ msleep(20);
+ WREG_DAC(0x1a, 0x01);
+}
+
/*
* DRM device
*/
@@ -108,7 +302,14 @@ static int mgag200_g200se_init_unique_rev_id(struct mgag200_g200se_device *g200s
return 0;
}
-static const struct mgag200_device_funcs mgag200_g200se_device_funcs = {
+static const struct mgag200_device_funcs mgag200_g200se_00_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200se_00_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200se_00_pixpllc_atomic_update,
+};
+
+static const struct mgag200_device_funcs mgag200_g200se_04_device_funcs = {
+ .pixpllc_atomic_check = mgag200_g200se_04_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200se_04_pixpllc_atomic_update,
};
struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
@@ -116,6 +317,7 @@ struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const stru
{
struct mgag200_g200se_device *g200se;
const struct mgag200_device_info *info;
+ const struct mgag200_device_funcs *funcs;
struct mga_device *mdev;
struct drm_device *dev;
resource_size_t vram_available;
@@ -162,7 +364,12 @@ struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const stru
return ERR_PTR(-EINVAL);
}
- ret = mgag200_device_init(mdev, type, info, &mgag200_g200se_device_funcs);
+ if (g200se->unique_rev_id >= 0x04)
+ funcs = &mgag200_g200se_04_device_funcs;
+ else
+ funcs = &mgag200_g200se_00_device_funcs;
+
+ ret = mgag200_device_init(mdev, type, info, funcs);
if (ret)
return ERR_PTR(ret);
diff --git a/drivers/gpu/drm/mgag200/mgag200_g200wb.c b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
index 92e174d63752..f71b786079fc 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200wb.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200wb.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/delay.h>
#include <linux/pci.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_drv.h>
#include "mgag200_drv.h"
@@ -38,6 +40,182 @@ void mgag200_g200wb_init_registers(struct mga_device *mdev)
mgag200_init_registers(mdev);
}
+/*
+ * PIXPLLC
+ */
+
+static int mgag200_g200wb_pixpllc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ static const unsigned int vcomax = 550000;
+ static const unsigned int vcomin = 150000;
+ static const unsigned int pllreffreq = 48000;
+
+ struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ struct mgag200_crtc_state *new_mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
+ long clock = new_crtc_state->mode.clock;
+ struct mgag200_pll_values *pixpllc = &new_mgag200_crtc_state->pixpllc;
+ unsigned int delta, tmpdelta;
+ unsigned int testp, testm, testn;
+ unsigned int p, m, n, s;
+ unsigned int computed;
+
+ m = n = p = s = 0;
+ delta = 0xffffffff;
+
+ for (testp = 1; testp < 9; testp++) {
+ if (clock * testp > vcomax)
+ continue;
+ if (clock * testp < vcomin)
+ continue;
+
+ for (testm = 1; testm < 17; testm++) {
+ for (testn = 1; testn < 151; testn++) {
+ computed = (pllreffreq * testn) / (testm * testp);
+ if (computed > clock)
+ tmpdelta = computed - clock;
+ else
+ tmpdelta = clock - computed;
+ if (tmpdelta < delta) {
+ delta = tmpdelta;
+ n = testn;
+ m = testm;
+ p = testp;
+ s = 0;
+ }
+ }
+ }
+ }
+
+ pixpllc->m = m;
+ pixpllc->n = n;
+ pixpllc->p = p;
+ pixpllc->s = s;
+
+ return 0;
+}
+
+void mgag200_g200wb_pixpllc_atomic_update(struct drm_crtc *crtc,
+ struct drm_atomic_state *old_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct mga_device *mdev = to_mga_device(dev);
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
+ struct mgag200_pll_values *pixpllc = &mgag200_crtc_state->pixpllc;
+ bool pll_locked = false;
+ unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
+ u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
+ int i, j, tmpcount, vcount;
+
+ pixpllcm = pixpllc->m - 1;
+ pixpllcn = pixpllc->n - 1;
+ pixpllcp = pixpllc->p - 1;
+ pixpllcs = pixpllc->s;
+
+ xpixpllcm = ((pixpllcn & BIT(8)) >> 1) | pixpllcm;
+ xpixpllcn = pixpllcn;
+ xpixpllcp = ((pixpllcn & GENMASK(10, 9)) >> 3) | (pixpllcs << 3) | pixpllcp;
+
+ WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
+
+ for (i = 0; i <= 32 && pll_locked == false; i++) {
+ if (i > 0) {
+ WREG8(MGAREG_CRTC_INDEX, 0x1e);
+ tmp = RREG8(MGAREG_CRTC_DATA);
+ if (tmp < 0xff)
+ WREG8(MGAREG_CRTC_DATA, tmp+1);
+ }
+
+ /* set pixclkdis to 1 */
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
+ WREG8(DAC_DATA, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_REMHEADCTL_CLKDIS;
+ WREG8(DAC_DATA, tmp);
+
+ /* select PLL Set C */
+ tmp = RREG8(MGAREG_MEM_MISC_READ);
+ tmp |= 0x3 << 2;
+ WREG8(MGAREG_MEM_MISC_WRITE, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN | 0x80;
+ WREG8(DAC_DATA, tmp);
+
+ udelay(500);
+
+ /* reset the PLL */
+ WREG8(DAC_INDEX, MGA1064_VREF_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~0x04;
+ WREG8(DAC_DATA, tmp);
+
+ udelay(50);
+
+ /* program pixel pll register */
+ WREG_DAC(MGA1064_WB_PIX_PLLC_N, xpixpllcn);
+ WREG_DAC(MGA1064_WB_PIX_PLLC_M, xpixpllcm);
+ WREG_DAC(MGA1064_WB_PIX_PLLC_P, xpixpllcp);
+
+ udelay(50);
+
+ /* turn pll on */
+ WREG8(DAC_INDEX, MGA1064_VREF_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp |= 0x04;
+ WREG_DAC(MGA1064_VREF_CTL, tmp);
+
+ udelay(500);
+
+ /* select the pixel pll */
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
+ tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
+ WREG8(DAC_DATA, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_REMHEADCTL_CLKSL_MSK;
+ tmp |= MGA1064_REMHEADCTL_CLKSL_PLL;
+ WREG8(DAC_DATA, tmp);
+
+ /* reset dotclock rate bit */
+ WREG8(MGAREG_SEQ_INDEX, 1);
+ tmp = RREG8(MGAREG_SEQ_DATA);
+ tmp &= ~0x8;
+ WREG8(MGAREG_SEQ_DATA, tmp);
+
+ WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
+ WREG8(DAC_DATA, tmp);
+
+ vcount = RREG8(MGAREG_VCOUNT);
+
+ for (j = 0; j < 30 && pll_locked == false; j++) {
+ tmpcount = RREG8(MGAREG_VCOUNT);
+ if (tmpcount < vcount)
+ vcount = 0;
+ if ((tmpcount - vcount) > 2)
+ pll_locked = true;
+ else
+ udelay(5);
+ }
+ }
+
+ WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
+ tmp = RREG8(DAC_DATA);
+ tmp &= ~MGA1064_REMHEADCTL_CLKDIS;
+ WREG_DAC(MGA1064_REMHEADCTL, tmp);
+}
+
/*
* DRM device
*/
@@ -48,6 +226,8 @@ static const struct mgag200_device_info mgag200_g200wb_device_info =
static const struct mgag200_device_funcs mgag200_g200wb_device_funcs = {
.disable_vidrst = mgag200_bmc_disable_vidrst,
.enable_vidrst = mgag200_bmc_enable_vidrst,
+ .pixpllc_atomic_check = mgag200_g200wb_pixpllc_atomic_check,
+ .pixpllc_atomic_update = mgag200_g200wb_pixpllc_atomic_update,
};
struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const struct drm_driver *drv,
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 7bcd3f6d891d..e3e40b25caa6 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -661,9 +661,8 @@ static int mgag200_crtc_helper_atomic_check(struct drm_crtc *crtc,
{
struct drm_device *dev = crtc->dev;
struct mga_device *mdev = to_mga_device(dev);
+ const struct mgag200_device_funcs *funcs = mdev->funcs;
struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
- struct mgag200_pll *pixpll = &mdev->pixpll;
- struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(new_crtc_state);
int ret;
ret = drm_atomic_helper_check_crtc_state(new_crtc_state, false);
@@ -674,10 +673,11 @@ static int mgag200_crtc_helper_atomic_check(struct drm_crtc *crtc,
return 0;
if (new_crtc_state->mode_changed) {
- ret = pixpll->funcs->compute(pixpll, new_crtc_state->mode.clock,
- &mgag200_crtc_state->pixpllc);
- if (ret)
- return ret;
+ if (funcs->pixpllc_atomic_check) {
+ ret = funcs->pixpllc_atomic_check(crtc, state);
+ if (ret)
+ return ret;
+ }
}
if (new_crtc_state->color_mgmt_changed && new_crtc_state->gamma_lut) {
@@ -720,7 +720,6 @@ static void mgag200_crtc_helper_atomic_enable(struct drm_crtc *crtc,
struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
struct mgag200_crtc_state *mgag200_crtc_state = to_mgag200_crtc_state(crtc_state);
const struct drm_format_info *format = mgag200_crtc_state->format;
- struct mgag200_pll *pixpll = &mdev->pixpll;
if (funcs->disable_vidrst)
funcs->disable_vidrst(mdev);
@@ -728,7 +727,8 @@ static void mgag200_crtc_helper_atomic_enable(struct drm_crtc *crtc,
mgag200_set_format_regs(mdev, format);
mgag200_set_mode_regs(mdev, adjusted_mode);
- pixpll->funcs->update(pixpll, &mgag200_crtc_state->pixpllc);
+ if (funcs->pixpllc_atomic_update)
+ funcs->pixpllc_atomic_update(crtc, old_state);
if (mdev->type == G200_ER)
mgag200_g200er_reset_tagfifo(mdev);
@@ -979,10 +979,6 @@ static int mgag200_pipeline_init(struct mga_device *mdev)
struct drm_connector *connector = &mdev->connector;
int ret;
- ret = mgag200_pixpll_init(&mdev->pixpll, mdev);
- if (ret)
- return ret;
-
ret = drm_universal_plane_init(dev, primary_plane, 0,
&mgag200_primary_plane_funcs,
mgag200_primary_plane_formats,
diff --git a/drivers/gpu/drm/mgag200/mgag200_pll.c b/drivers/gpu/drm/mgag200/mgag200_pll.c
deleted file mode 100644
index 8065ca5d8de9..000000000000
--- a/drivers/gpu/drm/mgag200/mgag200_pll.c
+++ /dev/null
@@ -1,997 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-
-#include <linux/delay.h>
-
-#include "mgag200_drv.h"
-
-/*
- * G200
- */
-
-static int mgag200_pixpll_compute_g200(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- struct mga_device *mdev = pixpll->mdev;
- struct drm_device *dev = &mdev->base;
- struct mgag200_g200_device *g200 = to_mgag200_g200_device(dev);
- const int post_div_max = 7;
- const int in_div_min = 1;
- const int in_div_max = 6;
- const int feed_div_min = 7;
- const int feed_div_max = 127;
- u8 testp, testm, testn;
- u8 n = 0, m = 0, p, s;
- long f_vco;
- long computed;
- long delta, tmp_delta;
- long ref_clk = g200->ref_clk;
- long p_clk_min = g200->pclk_min;
- long p_clk_max = g200->pclk_max;
-
- if (clock > p_clk_max) {
- drm_err(dev, "Pixel Clock %ld too high\n", clock);
- return -EINVAL;
- }
-
- if (clock < p_clk_min >> 3)
- clock = p_clk_min >> 3;
-
- f_vco = clock;
- for (testp = 0;
- testp <= post_div_max && f_vco < p_clk_min;
- testp = (testp << 1) + 1, f_vco <<= 1)
- ;
- p = testp + 1;
-
- delta = clock;
-
- for (testm = in_div_min; testm <= in_div_max; testm++) {
- for (testn = feed_div_min; testn <= feed_div_max; testn++) {
- computed = ref_clk * (testn + 1) / (testm + 1);
- if (computed < f_vco)
- tmp_delta = f_vco - computed;
- else
- tmp_delta = computed - f_vco;
- if (tmp_delta < delta) {
- delta = tmp_delta;
- m = testm + 1;
- n = testn + 1;
- }
- }
- }
- f_vco = ref_clk * n / m;
- if (f_vco < 100000)
- s = 0;
- else if (f_vco < 140000)
- s = 1;
- else if (f_vco < 180000)
- s = 2;
- else
- s = 3;
-
- drm_dbg_kms(dev, "clock: %ld vco: %ld m: %d n: %d p: %d s: %d\n",
- clock, f_vco, m, n, p, s);
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void
-mgag200_pixpll_update_g200(struct mgag200_pll *pixpll, const struct mgag200_pll_values *pixpllc)
-{
- struct mga_device *mdev = pixpll->mdev;
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = pixpllcm;
- xpixpllcn = pixpllcn;
- xpixpllcp = (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200 = {
- .compute = mgag200_pixpll_compute_g200,
- .update = mgag200_pixpll_update_g200,
-};
-
-/*
- * G200SE
- */
-
-static int mgag200_pixpll_compute_g200se_00(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 320000;
- static const unsigned int vcomin = 160000;
- static const unsigned int pllreffreq = 25000;
-
- unsigned int delta, tmpdelta, permitteddelta;
- unsigned int testp, testm, testn;
- unsigned int p, m, n, s;
- unsigned int computed;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
- permitteddelta = clock * 5 / 1000;
-
- for (testp = 8; testp > 0; testp /= 2) {
- if (clock * testp > vcomax)
- continue;
- if (clock * testp < vcomin)
- continue;
-
- for (testn = 17; testn < 256; testn++) {
- for (testm = 1; testm < 32; testm++) {
- computed = (pllreffreq * testn) / (testm * testp);
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- m = testm;
- n = testn;
- p = testp;
- }
- }
- }
- }
-
- if (delta > permitteddelta) {
- pr_warn("PLL delta too large\n");
- return -EINVAL;
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void mgag200_pixpll_update_g200se_00(struct mgag200_pll *pixpll,
- const struct mgag200_pll_values *pixpllc)
-{
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp;
- struct mga_device *mdev = pixpll->mdev;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = pixpllcm | ((pixpllcn & BIT(8)) >> 1);
- xpixpllcn = pixpllcn;
- xpixpllcp = (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
-}
-
-static int mgag200_pixpll_compute_g200se_04(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 1600000;
- static const unsigned int vcomin = 800000;
- static const unsigned int pllreffreq = 25000;
- static const unsigned int pvalues_e4[] = {16, 14, 12, 10, 8, 6, 4, 2, 1};
-
- unsigned int delta, tmpdelta, permitteddelta;
- unsigned int testp, testm, testn;
- unsigned int p, m, n, s;
- unsigned int computed;
- unsigned int fvv;
- unsigned int i;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
-
- if (clock < 25000)
- clock = 25000;
- clock = clock * 2;
-
- /* Permited delta is 0.5% as VESA Specification */
- permitteddelta = clock * 5 / 1000;
-
- for (i = 0 ; i < ARRAY_SIZE(pvalues_e4); i++) {
- testp = pvalues_e4[i];
-
- if ((clock * testp) > vcomax)
- continue;
- if ((clock * testp) < vcomin)
- continue;
-
- for (testn = 50; testn <= 256; testn++) {
- for (testm = 1; testm <= 32; testm++) {
- computed = (pllreffreq * testn) / (testm * testp);
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
-
- if (tmpdelta < delta) {
- delta = tmpdelta;
- m = testm;
- n = testn;
- p = testp;
- }
- }
- }
- }
-
- fvv = pllreffreq * n / m;
- fvv = (fvv - 800000) / 50000;
- if (fvv > 15)
- fvv = 15;
- s = fvv << 1;
-
- if (delta > permitteddelta) {
- pr_warn("PLL delta too large\n");
- return -EINVAL;
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void mgag200_pixpll_update_g200se_04(struct mgag200_pll *pixpll,
- const struct mgag200_pll_values *pixpllc)
-{
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp;
- struct mga_device *mdev = pixpll->mdev;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = pixpllcm | ((pixpllcn & BIT(8)) >> 1);
- xpixpllcn = pixpllcn;
- xpixpllcp = (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
-
- WREG_DAC(0x1a, 0x09);
- msleep(20);
- WREG_DAC(0x1a, 0x01);
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200se_00 = {
- .compute = mgag200_pixpll_compute_g200se_00,
- .update = mgag200_pixpll_update_g200se_00,
-};
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200se_04 = {
- .compute = mgag200_pixpll_compute_g200se_04,
- .update = mgag200_pixpll_update_g200se_04,
-};
-
-/*
- * G200WB
- */
-
-static int mgag200_pixpll_compute_g200wb(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 550000;
- static const unsigned int vcomin = 150000;
- static const unsigned int pllreffreq = 48000;
-
- unsigned int delta, tmpdelta;
- unsigned int testp, testm, testn;
- unsigned int p, m, n, s;
- unsigned int computed;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
-
- for (testp = 1; testp < 9; testp++) {
- if (clock * testp > vcomax)
- continue;
- if (clock * testp < vcomin)
- continue;
-
- for (testm = 1; testm < 17; testm++) {
- for (testn = 1; testn < 151; testn++) {
- computed = (pllreffreq * testn) / (testm * testp);
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- n = testn;
- m = testm;
- p = testp;
- s = 0;
- }
- }
- }
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void
-mgag200_pixpll_update_g200wb(struct mgag200_pll *pixpll, const struct mgag200_pll_values *pixpllc)
-{
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
- int i, j, tmpcount, vcount;
- struct mga_device *mdev = pixpll->mdev;
- bool pll_locked = false;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = ((pixpllcn & BIT(8)) >> 1) | pixpllcm;
- xpixpllcn = pixpllcn;
- xpixpllcp = ((pixpllcn & GENMASK(10, 9)) >> 3) | (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- for (i = 0; i <= 32 && pll_locked == false; i++) {
- if (i > 0) {
- WREG8(MGAREG_CRTC_INDEX, 0x1e);
- tmp = RREG8(MGAREG_CRTC_DATA);
- if (tmp < 0xff)
- WREG8(MGAREG_CRTC_DATA, tmp+1);
- }
-
- /* set pixclkdis to 1 */
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
- WREG8(DAC_DATA, tmp);
-
- WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_REMHEADCTL_CLKDIS;
- WREG8(DAC_DATA, tmp);
-
- /* select PLL Set C */
- tmp = RREG8(MGAREG_MEM_MISC_READ);
- tmp |= 0x3 << 2;
- WREG8(MGAREG_MEM_MISC_WRITE, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN | 0x80;
- WREG8(DAC_DATA, tmp);
-
- udelay(500);
-
- /* reset the PLL */
- WREG8(DAC_INDEX, MGA1064_VREF_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~0x04;
- WREG8(DAC_DATA, tmp);
-
- udelay(50);
-
- /* program pixel pll register */
- WREG_DAC(MGA1064_WB_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_WB_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_WB_PIX_PLLC_P, xpixpllcp);
-
- udelay(50);
-
- /* turn pll on */
- WREG8(DAC_INDEX, MGA1064_VREF_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= 0x04;
- WREG_DAC(MGA1064_VREF_CTL, tmp);
-
- udelay(500);
-
- /* select the pixel pll */
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
- tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
- WREG8(DAC_DATA, tmp);
-
- WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_REMHEADCTL_CLKSL_MSK;
- tmp |= MGA1064_REMHEADCTL_CLKSL_PLL;
- WREG8(DAC_DATA, tmp);
-
- /* reset dotclock rate bit */
- WREG8(MGAREG_SEQ_INDEX, 1);
- tmp = RREG8(MGAREG_SEQ_DATA);
- tmp &= ~0x8;
- WREG8(MGAREG_SEQ_DATA, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
- WREG8(DAC_DATA, tmp);
-
- vcount = RREG8(MGAREG_VCOUNT);
-
- for (j = 0; j < 30 && pll_locked == false; j++) {
- tmpcount = RREG8(MGAREG_VCOUNT);
- if (tmpcount < vcount)
- vcount = 0;
- if ((tmpcount - vcount) > 2)
- pll_locked = true;
- else
- udelay(5);
- }
- }
-
- WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_REMHEADCTL_CLKDIS;
- WREG_DAC(MGA1064_REMHEADCTL, tmp);
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200wb = {
- .compute = mgag200_pixpll_compute_g200wb,
- .update = mgag200_pixpll_update_g200wb,
-};
-
-/*
- * G200EV
- */
-
-static int mgag200_pixpll_compute_g200ev(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 550000;
- static const unsigned int vcomin = 150000;
- static const unsigned int pllreffreq = 50000;
-
- unsigned int delta, tmpdelta;
- unsigned int testp, testm, testn;
- unsigned int p, m, n, s;
- unsigned int computed;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
-
- for (testp = 16; testp > 0; testp--) {
- if (clock * testp > vcomax)
- continue;
- if (clock * testp < vcomin)
- continue;
-
- for (testn = 1; testn < 257; testn++) {
- for (testm = 1; testm < 17; testm++) {
- computed = (pllreffreq * testn) /
- (testm * testp);
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- n = testn;
- m = testm;
- p = testp;
- }
- }
- }
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void
-mgag200_pixpll_update_g200ev(struct mgag200_pll *pixpll, const struct mgag200_pll_values *pixpllc)
-{
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
- struct mga_device *mdev = pixpll->mdev;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = pixpllcm;
- xpixpllcn = pixpllcn;
- xpixpllcp = (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
- WREG8(DAC_DATA, tmp);
-
- tmp = RREG8(MGAREG_MEM_MISC_READ);
- tmp |= 0x3 << 2;
- WREG8(MGAREG_MEM_MISC_WRITE, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT);
- tmp = RREG8(DAC_DATA);
- WREG8(DAC_DATA, tmp & ~0x40);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
- WREG8(DAC_DATA, tmp);
-
- WREG_DAC(MGA1064_EV_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_EV_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_EV_PIX_PLLC_P, xpixpllcp);
-
- udelay(50);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
- WREG8(DAC_DATA, tmp);
-
- udelay(500);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
- tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
- WREG8(DAC_DATA, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT);
- tmp = RREG8(DAC_DATA);
- WREG8(DAC_DATA, tmp | 0x40);
-
- tmp = RREG8(MGAREG_MEM_MISC_READ);
- tmp |= (0x3 << 2);
- WREG8(MGAREG_MEM_MISC_WRITE, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
- WREG8(DAC_DATA, tmp);
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200ev = {
- .compute = mgag200_pixpll_compute_g200ev,
- .update = mgag200_pixpll_update_g200ev,
-};
-
-/*
- * G200EH
- */
-
-static int mgag200_pixpll_compute_g200eh(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 800000;
- static const unsigned int vcomin = 400000;
- static const unsigned int pllreffreq = 33333;
-
- unsigned int delta, tmpdelta;
- unsigned int testp, testm, testn;
- unsigned int p, m, n, s;
- unsigned int computed;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
-
- for (testp = 16; testp > 0; testp >>= 1) {
- if (clock * testp > vcomax)
- continue;
- if (clock * testp < vcomin)
- continue;
-
- for (testm = 1; testm < 33; testm++) {
- for (testn = 17; testn < 257; testn++) {
- computed = (pllreffreq * testn) / (testm * testp);
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- n = testn;
- m = testm;
- p = testp;
- }
- }
- }
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void
-mgag200_pixpll_update_g200eh(struct mgag200_pll *pixpll, const struct mgag200_pll_values *pixpllc)
-{
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
- int i, j, tmpcount, vcount;
- struct mga_device *mdev = pixpll->mdev;
- bool pll_locked = false;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = ((pixpllcn & BIT(8)) >> 1) | pixpllcm;
- xpixpllcn = pixpllcn;
- xpixpllcp = (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- for (i = 0; i <= 32 && pll_locked == false; i++) {
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
- WREG8(DAC_DATA, tmp);
-
- tmp = RREG8(MGAREG_MEM_MISC_READ);
- tmp |= 0x3 << 2;
- WREG8(MGAREG_MEM_MISC_WRITE, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
- WREG8(DAC_DATA, tmp);
-
- udelay(500);
-
- WREG_DAC(MGA1064_EH_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_EH_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_EH_PIX_PLLC_P, xpixpllcp);
-
- udelay(500);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
- tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
- WREG8(DAC_DATA, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
- tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
- WREG8(DAC_DATA, tmp);
-
- vcount = RREG8(MGAREG_VCOUNT);
-
- for (j = 0; j < 30 && pll_locked == false; j++) {
- tmpcount = RREG8(MGAREG_VCOUNT);
- if (tmpcount < vcount)
- vcount = 0;
- if ((tmpcount - vcount) > 2)
- pll_locked = true;
- else
- udelay(5);
- }
- }
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200eh = {
- .compute = mgag200_pixpll_compute_g200eh,
- .update = mgag200_pixpll_update_g200eh,
-};
-
-/*
- * G200EH3
- */
-
-static int mgag200_pixpll_compute_g200eh3(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 3000000;
- static const unsigned int vcomin = 1500000;
- static const unsigned int pllreffreq = 25000;
-
- unsigned int delta, tmpdelta;
- unsigned int testp, testm, testn;
- unsigned int p, m, n, s;
- unsigned int computed;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
- testp = 0;
-
- for (testm = 150; testm >= 6; testm--) {
- if (clock * testm > vcomax)
- continue;
- if (clock * testm < vcomin)
- continue;
- for (testn = 120; testn >= 60; testn--) {
- computed = (pllreffreq * testn) / testm;
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- n = testn + 1;
- m = testm + 1;
- p = testp + 1;
- }
- if (delta == 0)
- break;
- }
- if (delta == 0)
- break;
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200eh3 = {
- .compute = mgag200_pixpll_compute_g200eh3,
- .update = mgag200_pixpll_update_g200eh, // same as G200EH
-};
-
-/*
- * G200ER
- */
-
-static int mgag200_pixpll_compute_g200er(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 1488000;
- static const unsigned int vcomin = 1056000;
- static const unsigned int pllreffreq = 48000;
- static const unsigned int m_div_val[] = { 1, 2, 4, 8 };
-
- unsigned int delta, tmpdelta;
- int testr, testn, testm, testo;
- unsigned int p, m, n, s;
- unsigned int computed, vco;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
-
- for (testr = 0; testr < 4; testr++) {
- if (delta == 0)
- break;
- for (testn = 5; testn < 129; testn++) {
- if (delta == 0)
- break;
- for (testm = 3; testm >= 0; testm--) {
- if (delta == 0)
- break;
- for (testo = 5; testo < 33; testo++) {
- vco = pllreffreq * (testn + 1) /
- (testr + 1);
- if (vco < vcomin)
- continue;
- if (vco > vcomax)
- continue;
- computed = vco / (m_div_val[testm] * (testo + 1));
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- m = (testm | (testo << 3)) + 1;
- n = testn + 1;
- p = testr + 1;
- s = testr;
- }
- }
- }
- }
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static void
-mgag200_pixpll_update_g200er(struct mgag200_pll *pixpll, const struct mgag200_pll_values *pixpllc)
-{
- unsigned int pixpllcm, pixpllcn, pixpllcp, pixpllcs;
- u8 xpixpllcm, xpixpllcn, xpixpllcp, tmp;
- struct mga_device *mdev = pixpll->mdev;
-
- pixpllcm = pixpllc->m - 1;
- pixpllcn = pixpllc->n - 1;
- pixpllcp = pixpllc->p - 1;
- pixpllcs = pixpllc->s;
-
- xpixpllcm = pixpllcm;
- xpixpllcn = pixpllcn;
- xpixpllcp = (pixpllcs << 3) | pixpllcp;
-
- WREG_MISC_MASKED(MGAREG_MISC_CLKSEL_MGA, MGAREG_MISC_CLKSEL_MASK);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
- WREG8(DAC_DATA, tmp);
-
- WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
- tmp = RREG8(DAC_DATA);
- tmp |= MGA1064_REMHEADCTL_CLKDIS;
- WREG8(DAC_DATA, tmp);
-
- tmp = RREG8(MGAREG_MEM_MISC_READ);
- tmp |= (0x3<<2) | 0xc0;
- WREG8(MGAREG_MEM_MISC_WRITE, tmp);
-
- WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
- tmp = RREG8(DAC_DATA);
- tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
- tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
- WREG8(DAC_DATA, tmp);
-
- udelay(500);
-
- WREG_DAC(MGA1064_ER_PIX_PLLC_N, xpixpllcn);
- WREG_DAC(MGA1064_ER_PIX_PLLC_M, xpixpllcm);
- WREG_DAC(MGA1064_ER_PIX_PLLC_P, xpixpllcp);
-
- udelay(50);
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200er = {
- .compute = mgag200_pixpll_compute_g200er,
- .update = mgag200_pixpll_update_g200er,
-};
-
-/*
- * G200EW3
- */
-
-static int mgag200_pixpll_compute_g200ew3(struct mgag200_pll *pixpll, long clock,
- struct mgag200_pll_values *pixpllc)
-{
- static const unsigned int vcomax = 800000;
- static const unsigned int vcomin = 400000;
- static const unsigned int pllreffreq = 25000;
-
- unsigned int delta, tmpdelta;
- unsigned int testp, testm, testn, testp2;
- unsigned int p, m, n, s;
- unsigned int computed;
-
- m = n = p = s = 0;
- delta = 0xffffffff;
-
- for (testp = 1; testp < 8; testp++) {
- for (testp2 = 1; testp2 < 8; testp2++) {
- if (testp < testp2)
- continue;
- if ((clock * testp * testp2) > vcomax)
- continue;
- if ((clock * testp * testp2) < vcomin)
- continue;
- for (testm = 1; testm < 26; testm++) {
- for (testn = 32; testn < 2048 ; testn++) {
- computed = (pllreffreq * testn) / (testm * testp * testp2);
- if (computed > clock)
- tmpdelta = computed - clock;
- else
- tmpdelta = clock - computed;
- if (tmpdelta < delta) {
- delta = tmpdelta;
- m = testm + 1;
- n = testn + 1;
- p = testp + 1;
- s = testp2;
- }
- }
- }
- }
- }
-
- pixpllc->m = m;
- pixpllc->n = n;
- pixpllc->p = p;
- pixpllc->s = s;
-
- return 0;
-}
-
-static const struct mgag200_pll_funcs mgag200_pixpll_funcs_g200ew3 = {
- .compute = mgag200_pixpll_compute_g200ew3,
- .update = mgag200_pixpll_update_g200wb, // same as G200WB
-};
-
-/*
- * PLL initialization
- */
-
-int mgag200_pixpll_init(struct mgag200_pll *pixpll, struct mga_device *mdev)
-{
- struct drm_device *dev = &mdev->base;
- struct mgag200_g200se_device *g200se;
-
- pixpll->mdev = mdev;
-
- switch (mdev->type) {
- case G200_PCI:
- case G200_AGP:
- pixpll->funcs = &mgag200_pixpll_funcs_g200;
- break;
- case G200_SE_A:
- case G200_SE_B:
- g200se = to_mgag200_g200se_device(dev);
-
- if (g200se->unique_rev_id >= 0x04)
- pixpll->funcs = &mgag200_pixpll_funcs_g200se_04;
- else
- pixpll->funcs = &mgag200_pixpll_funcs_g200se_00;
- break;
- case G200_WB:
- pixpll->funcs = &mgag200_pixpll_funcs_g200wb;
- break;
- case G200_EV:
- pixpll->funcs = &mgag200_pixpll_funcs_g200ev;
- break;
- case G200_EH:
- pixpll->funcs = &mgag200_pixpll_funcs_g200eh;
- break;
- case G200_EH3:
- pixpll->funcs = &mgag200_pixpll_funcs_g200eh3;
- break;
- case G200_ER:
- pixpll->funcs = &mgag200_pixpll_funcs_g200er;
- break;
- case G200_EW3:
- pixpll->funcs = &mgag200_pixpll_funcs_g200ew3;
- break;
- default:
- drm_err(dev, "unknown device type %d\n", mdev->type);
- return -ENODEV;
- }
-
- return 0;
-}
--
2.36.1
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