[PATCH v2 15/16] drm/exynos: split out platform specific code
Michael Tretter
m.tretter at pengutronix.de
Fri Sep 11 13:54:12 UTC 2020
Split the driver into the drm bridge driver and the exynos platform
specific driver.
Signed-off-by: Michael Tretter <m.tretter at pengutronix.de>
---
v2: none
---
drivers/gpu/drm/exynos/Makefile | 2 +-
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 372 +-----------------
drivers/gpu/drm/exynos/exynos_drm_dsi.h | 64 +++
drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c | 333 ++++++++++++++++
4 files changed, 405 insertions(+), 366 deletions(-)
create mode 100644 drivers/gpu/drm/exynos/exynos_drm_dsi.h
create mode 100644 drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c
diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile
index 2fd2f3ee4fcf..add70b336935 100644
--- a/drivers/gpu/drm/exynos/Makefile
+++ b/drivers/gpu/drm/exynos/Makefile
@@ -11,7 +11,7 @@ exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD) += exynos_drm_fimd.o
exynosdrm-$(CONFIG_DRM_EXYNOS5433_DECON) += exynos5433_drm_decon.o
exynosdrm-$(CONFIG_DRM_EXYNOS7_DECON) += exynos7_drm_decon.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DPI) += exynos_drm_dpi.o
-exynosdrm-$(CONFIG_DRM_EXYNOS_DSI) += exynos_drm_dsi.o
+exynosdrm-$(CONFIG_DRM_EXYNOS_DSI) += exynos_drm_dsi.o exynos_drm_dsi_pltfm.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DP) += exynos_dp.o
exynosdrm-$(CONFIG_DRM_EXYNOS_MIXER) += exynos_mixer.o
exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI) += exynos_hdmi.o
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index ad70f5ce81ad..e8aea9d90c34 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -32,8 +32,7 @@
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
-#include "exynos_drm_crtc.h"
-#include "exynos_drm_drv.h"
+#include "exynos_drm_dsi.h"
/* returns true iff both arguments logically differs */
#define NEQV(a, b) (!(a) ^ !(b))
@@ -44,10 +43,6 @@
#define DSIM_TX_READY_HS_CLK (1 << 10)
#define DSIM_PLL_STABLE (1 << 31)
-/* DSIM_SWRST */
-#define DSIM_FUNCRST (1 << 16)
-#define DSIM_SWRST (1 << 0)
-
/* DSIM_TIMEOUT */
#define DSIM_LPDR_TIMEOUT(x) ((x) << 0)
#define DSIM_BTA_TIMEOUT(x) ((x) << 16)
@@ -239,31 +234,6 @@ struct exynos_dsi_transfer {
#define DSIM_STATE_CMD_LPM BIT(2)
#define DSIM_STATE_VIDOUT_AVAILABLE BIT(3)
-struct exynos_dsi;
-struct exynos_dsi_host_ops {
- int (*attach)(struct device *dev, struct mipi_dsi_device *device);
- int (*detach)(struct device *dev, struct mipi_dsi_device *device);
- void (*te_handler)(struct device *dev);
-};
-
-enum exynos_reg_offset {
- EXYNOS_REG_OFS,
- EXYNOS5433_REG_OFS
-};
-
-struct exynos_dsi_driver_data {
- enum exynos_reg_offset reg_ofs;
- unsigned int plltmr_reg;
- unsigned int has_freqband:1;
- unsigned int has_clklane_stop:1;
- unsigned int num_clks;
- unsigned int max_freq;
- unsigned int wait_for_reset;
- unsigned int num_bits_resol;
- const unsigned int *reg_values;
- const struct exynos_dsi_host_ops *host_ops;
-};
-
struct exynos_dsi {
struct drm_bridge bridge;
struct mipi_dsi_host dsi_host;
@@ -400,201 +370,6 @@ static inline u32 exynos_dsi_read(struct exynos_dsi *dsi, enum reg_idx idx)
return readl(dsi->reg_base + reg_ofs[idx]);
}
-enum reg_value_idx {
- RESET_TYPE,
- PLL_TIMER,
- STOP_STATE_CNT,
- PHYCTRL_ULPS_EXIT,
- PHYCTRL_VREG_LP,
- PHYCTRL_SLEW_UP,
- PHYTIMING_LPX,
- PHYTIMING_HS_EXIT,
- PHYTIMING_CLK_PREPARE,
- PHYTIMING_CLK_ZERO,
- PHYTIMING_CLK_POST,
- PHYTIMING_CLK_TRAIL,
- PHYTIMING_HS_PREPARE,
- PHYTIMING_HS_ZERO,
- PHYTIMING_HS_TRAIL
-};
-
-struct exynos_dsi_pltfm {
- struct exynos_dsi *dsi;
- struct drm_encoder encoder;
-};
-
-static const unsigned int reg_values[] = {
- [RESET_TYPE] = DSIM_SWRST,
- [PLL_TIMER] = 500,
- [STOP_STATE_CNT] = 0xf,
- [PHYCTRL_ULPS_EXIT] = 0x0af,
- [PHYCTRL_VREG_LP] = 0,
- [PHYCTRL_SLEW_UP] = 0,
- [PHYTIMING_LPX] = 0x06,
- [PHYTIMING_HS_EXIT] = 0x0b,
- [PHYTIMING_CLK_PREPARE] = 0x07,
- [PHYTIMING_CLK_ZERO] = 0x27,
- [PHYTIMING_CLK_POST] = 0x0d,
- [PHYTIMING_CLK_TRAIL] = 0x08,
- [PHYTIMING_HS_PREPARE] = 0x09,
- [PHYTIMING_HS_ZERO] = 0x0d,
- [PHYTIMING_HS_TRAIL] = 0x0b,
-};
-
-static const unsigned int exynos5422_reg_values[] = {
- [RESET_TYPE] = DSIM_SWRST,
- [PLL_TIMER] = 500,
- [STOP_STATE_CNT] = 0xf,
- [PHYCTRL_ULPS_EXIT] = 0xaf,
- [PHYCTRL_VREG_LP] = 0,
- [PHYCTRL_SLEW_UP] = 0,
- [PHYTIMING_LPX] = 0x08,
- [PHYTIMING_HS_EXIT] = 0x0d,
- [PHYTIMING_CLK_PREPARE] = 0x09,
- [PHYTIMING_CLK_ZERO] = 0x30,
- [PHYTIMING_CLK_POST] = 0x0e,
- [PHYTIMING_CLK_TRAIL] = 0x0a,
- [PHYTIMING_HS_PREPARE] = 0x0c,
- [PHYTIMING_HS_ZERO] = 0x11,
- [PHYTIMING_HS_TRAIL] = 0x0d,
-};
-
-static const unsigned int exynos5433_reg_values[] = {
- [RESET_TYPE] = DSIM_FUNCRST,
- [PLL_TIMER] = 22200,
- [STOP_STATE_CNT] = 0xa,
- [PHYCTRL_ULPS_EXIT] = 0x190,
- [PHYCTRL_VREG_LP] = 1,
- [PHYCTRL_SLEW_UP] = 1,
- [PHYTIMING_LPX] = 0x07,
- [PHYTIMING_HS_EXIT] = 0x0c,
- [PHYTIMING_CLK_PREPARE] = 0x09,
- [PHYTIMING_CLK_ZERO] = 0x2d,
- [PHYTIMING_CLK_POST] = 0x0e,
- [PHYTIMING_CLK_TRAIL] = 0x09,
- [PHYTIMING_HS_PREPARE] = 0x0b,
- [PHYTIMING_HS_ZERO] = 0x10,
- [PHYTIMING_HS_TRAIL] = 0x0c,
-};
-
-static int __exynos_dsi_host_attach(struct device *dev,
- struct mipi_dsi_device *device)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
- struct drm_device *drm = dsi->encoder.dev;
- struct exynos_drm_crtc *crtc;
-
- mutex_lock(&drm->mode_config.mutex);
- crtc = exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD);
- crtc->i80_mode = !(device->mode_flags & MIPI_DSI_MODE_VIDEO);
- mutex_unlock(&drm->mode_config.mutex);
-
- if (drm->mode_config.poll_enabled)
- drm_kms_helper_hotplug_event(drm);
-
- return 0;
-}
-
-static int __exynos_dsi_host_detach(struct device *dev,
- struct mipi_dsi_device *device)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
- struct drm_device *drm = dsi->encoder.dev;
-
- if (drm->mode_config.poll_enabled)
- drm_kms_helper_hotplug_event(drm);
-
- return 0;
-}
-
-static void __exynos_dsi_te_handler(struct device *dev)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
-
- exynos_drm_crtc_te_handler(dsi->encoder.crtc);
-}
-
-static const struct exynos_dsi_host_ops exynos_dsi_host_ops = {
- .attach = __exynos_dsi_host_attach,
- .detach = __exynos_dsi_host_detach,
- .te_handler = __exynos_dsi_te_handler,
-};
-
-static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = {
- .reg_ofs = EXYNOS_REG_OFS,
- .plltmr_reg = 0x50,
- .has_freqband = 1,
- .has_clklane_stop = 1,
- .num_clks = 2,
- .max_freq = 1000,
- .wait_for_reset = 1,
- .num_bits_resol = 11,
- .reg_values = reg_values,
- .host_ops = &exynos_dsi_host_ops,
-};
-
-static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = {
- .reg_ofs = EXYNOS_REG_OFS,
- .plltmr_reg = 0x50,
- .has_freqband = 1,
- .has_clklane_stop = 1,
- .num_clks = 2,
- .max_freq = 1000,
- .wait_for_reset = 1,
- .num_bits_resol = 11,
- .reg_values = reg_values,
- .host_ops = &exynos_dsi_host_ops,
-};
-
-static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = {
- .reg_ofs = EXYNOS_REG_OFS,
- .plltmr_reg = 0x58,
- .num_clks = 2,
- .max_freq = 1000,
- .wait_for_reset = 1,
- .num_bits_resol = 11,
- .reg_values = reg_values,
- .host_ops = &exynos_dsi_host_ops,
-};
-
-static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
- .reg_ofs = EXYNOS5433_REG_OFS,
- .plltmr_reg = 0xa0,
- .has_clklane_stop = 1,
- .num_clks = 5,
- .max_freq = 1500,
- .wait_for_reset = 0,
- .num_bits_resol = 12,
- .reg_values = exynos5433_reg_values,
- .host_ops = &exynos_dsi_host_ops,
-};
-
-static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
- .reg_ofs = EXYNOS5433_REG_OFS,
- .plltmr_reg = 0xa0,
- .has_clklane_stop = 1,
- .num_clks = 2,
- .max_freq = 1500,
- .wait_for_reset = 1,
- .num_bits_resol = 12,
- .reg_values = exynos5422_reg_values,
- .host_ops = &exynos_dsi_host_ops,
-};
-
-static const struct of_device_id exynos_dsi_of_match[] = {
- { .compatible = "samsung,exynos3250-mipi-dsi",
- .data = &exynos3_dsi_driver_data },
- { .compatible = "samsung,exynos4210-mipi-dsi",
- .data = &exynos4_dsi_driver_data },
- { .compatible = "samsung,exynos5410-mipi-dsi",
- .data = &exynos5_dsi_driver_data },
- { .compatible = "samsung,exynos5422-mipi-dsi",
- .data = &exynos5422_dsi_driver_data },
- { .compatible = "samsung,exynos5433-mipi-dsi",
- .data = &exynos5433_dsi_driver_data },
- { }
-};
-
static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi)
{
if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300)))
@@ -1677,8 +1452,6 @@ static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = {
.mode_set = exynos_dsi_bridge_mode_set,
};
-MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
-
static int exynos_dsi_host_attach(struct mipi_dsi_host *host,
struct mipi_dsi_device *device)
{
@@ -1779,11 +1552,6 @@ static int exynos_dsi_of_read_u32(const struct device_node *np,
return ret;
}
-enum {
- DSI_PORT_IN,
- DSI_PORT_OUT
-};
-
static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
{
struct device *dev = dsi->dev;
@@ -1808,59 +1576,6 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
return 0;
}
-static int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder);
-static void exynos_dsi_unbind(struct exynos_dsi *dsi);
-
-static int exynos_dsi_pltfm_bind(struct device *dev, struct device *master, void *data)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
- struct drm_encoder *encoder = &dsi->encoder;
- struct drm_device *drm_dev = data;
- struct device_node *in_bridge_node;
- struct drm_bridge *in_bridge;
- int ret;
-
- drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
-
- ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
- if (ret < 0)
- return ret;
-
- in_bridge_node = of_graph_get_remote_node(dev->of_node, DSI_PORT_IN, 0);
- if (in_bridge_node) {
- in_bridge = of_drm_find_bridge(in_bridge_node);
- if (in_bridge)
- drm_bridge_attach(encoder, in_bridge, NULL, 0);
- of_node_put(in_bridge_node);
- }
-
- ret = exynos_dsi_bind(dsi->dsi, encoder);
- if (ret)
- goto err;
-
- return 0;
-
-err:
- drm_encoder_cleanup(encoder);
- return ret;
-}
-
-static void exynos_dsi_pltfm_unbind(struct device *dev, struct device *master,
- void *data)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
- struct drm_encoder *encoder = &dsi->encoder;
-
- exynos_dsi_unbind(dsi->dsi);
-
- drm_encoder_cleanup(encoder);
-}
-
-static const struct component_ops exynos_dsi_pltfm_component_ops = {
- .bind = exynos_dsi_pltfm_bind,
- .unbind = exynos_dsi_pltfm_unbind,
-};
-
static struct exynos_dsi *__exynos_dsi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -1972,12 +1687,12 @@ static void __exynos_dsi_remove(struct exynos_dsi *dsi)
/*
* Probe/remove API, used from platforms based on the DRM bridge API.
*/
-static struct exynos_dsi *exynos_dsi_probe(struct platform_device *pdev)
+struct exynos_dsi *exynos_dsi_probe(struct platform_device *pdev)
{
return __exynos_dsi_probe(pdev);
}
-static void exynos_dsi_remove(struct exynos_dsi *dsi)
+void exynos_dsi_remove(struct exynos_dsi *dsi)
{
return __exynos_dsi_remove(dsi);
}
@@ -1985,61 +1700,19 @@ static void exynos_dsi_remove(struct exynos_dsi *dsi)
/*
* Bind/unbind API, used from platforms based on the component framework.
*/
-static int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder)
+int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder)
{
struct drm_bridge *previous = drm_bridge_chain_get_first_bridge(encoder);
return drm_bridge_attach(encoder, &dsi->bridge, previous, 0);
}
-static void exynos_dsi_unbind(struct exynos_dsi *dsi)
+void exynos_dsi_unbind(struct exynos_dsi *dsi)
{
exynos_dsi_disable(dsi);
}
-static int exynos_dsi_pltfm_probe(struct platform_device *pdev)
-{
- struct exynos_dsi_pltfm *dsi;
- struct device *dev = &pdev->dev;
- int ret;
-
- dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
- if (!dsi)
- return -ENOMEM;
- platform_set_drvdata(pdev, dsi);
-
- dsi->dsi = exynos_dsi_probe(pdev);
- if (IS_ERR(dsi->dsi))
- return PTR_ERR(dsi->dsi);
-
- pm_runtime_enable(dev);
-
- ret = component_add(dev, &exynos_dsi_pltfm_component_ops);
- if (ret)
- goto err_disable_runtime;
-
- return 0;
-
-err_disable_runtime:
- pm_runtime_disable(dev);
-
- return ret;
-}
-
-static int exynos_dsi_pltfm_remove(struct platform_device *pdev)
-{
- struct exynos_dsi_pltfm *dsi = platform_get_drvdata(pdev);
-
- pm_runtime_disable(&pdev->dev);
-
- exynos_dsi_remove(dsi->dsi);
-
- component_del(&pdev->dev, &exynos_dsi_pltfm_component_ops);
-
- return 0;
-}
-
-static int exynos_dsi_suspend(struct exynos_dsi *dsi)
+int exynos_dsi_suspend(struct exynos_dsi *dsi)
{
const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
int ret, i;
@@ -2068,7 +1741,7 @@ static int exynos_dsi_suspend(struct exynos_dsi *dsi)
return 0;
}
-static int exynos_dsi_resume(struct exynos_dsi *dsi)
+int exynos_dsi_resume(struct exynos_dsi *dsi)
{
const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
int ret, i;
@@ -2101,37 +1774,6 @@ static int exynos_dsi_resume(struct exynos_dsi *dsi)
return ret;
}
-static int __maybe_unused exynos_dsi_pltfm_suspend(struct device *dev)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
-
- return exynos_dsi_suspend(dsi->dsi);
-}
-
-static int __maybe_unused exynos_dsi_pltfm_resume(struct device *dev)
-{
- struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
-
- return exynos_dsi_resume(dsi->dsi);
-}
-
-static const struct dev_pm_ops exynos_dsi_pm_ops = {
- SET_RUNTIME_PM_OPS(exynos_dsi_pltfm_suspend, exynos_dsi_pltfm_resume, NULL)
- SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
- pm_runtime_force_resume)
-};
-
-struct platform_driver dsi_driver = {
- .probe = exynos_dsi_pltfm_probe,
- .remove = exynos_dsi_pltfm_remove,
- .driver = {
- .name = "exynos-dsi",
- .owner = THIS_MODULE,
- .pm = &exynos_dsi_pm_ops,
- .of_match_table = exynos_dsi_of_match,
- },
-};
-
MODULE_AUTHOR("Tomasz Figa <t.figa at samsung.com>");
MODULE_AUTHOR("Andrzej Hajda <a.hajda at samsung.com>");
MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.h b/drivers/gpu/drm/exynos/exynos_drm_dsi.h
new file mode 100644
index 000000000000..8fa3276889de
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __EXYNOS_DRM_DSI__
+#define __EXYNOS_DRM_DSI__
+
+struct drm_encoder;
+struct exynos_dsi;
+struct platform_device;
+struct mipi_dsi_device;
+
+enum exynos_reg_offset {
+ EXYNOS_REG_OFS,
+ EXYNOS5433_REG_OFS
+};
+
+struct exynos_dsi *exynos_dsi_probe(struct platform_device *pdev);
+void exynos_dsi_remove(struct exynos_dsi *dsi);
+int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder);
+void exynos_dsi_unbind(struct exynos_dsi *dsi);
+
+int exynos_dsi_suspend(struct exynos_dsi *dsi);
+int exynos_dsi_resume(struct exynos_dsi *dsi);
+
+enum reg_value_idx {
+ RESET_TYPE,
+ PLL_TIMER,
+ STOP_STATE_CNT,
+ PHYCTRL_ULPS_EXIT,
+ PHYCTRL_VREG_LP,
+ PHYCTRL_SLEW_UP,
+ PHYTIMING_LPX,
+ PHYTIMING_HS_EXIT,
+ PHYTIMING_CLK_PREPARE,
+ PHYTIMING_CLK_ZERO,
+ PHYTIMING_CLK_POST,
+ PHYTIMING_CLK_TRAIL,
+ PHYTIMING_HS_PREPARE,
+ PHYTIMING_HS_ZERO,
+ PHYTIMING_HS_TRAIL
+};
+
+/* DSIM_SWRST */
+#define DSIM_FUNCRST (1 << 16)
+#define DSIM_SWRST (1 << 0)
+
+struct exynos_dsi_host_ops {
+ int (*attach)(struct device *dev, struct mipi_dsi_device *device);
+ int (*detach)(struct device *dev, struct mipi_dsi_device *device);
+ void (*te_handler)(struct device *dev);
+};
+
+struct exynos_dsi_driver_data {
+ enum exynos_reg_offset reg_ofs;
+ unsigned int plltmr_reg;
+ unsigned int has_freqband:1;
+ unsigned int has_clklane_stop:1;
+ unsigned int num_clks;
+ unsigned int max_freq;
+ unsigned int wait_for_reset;
+ unsigned int num_bits_resol;
+ const unsigned int *reg_values;
+ const struct exynos_dsi_host_ops *host_ops;
+};
+
+#endif /* __EXYNOS_DRM_DSI__ */
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c b/drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c
new file mode 100644
index 000000000000..79d9ec6ade45
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c
@@ -0,0 +1,333 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Samsung SoC MIPI DSI Master driver.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Contacts: Tomasz Figa <t.figa at samsung.com>
+ */
+
+#include <linux/component.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_drv.h"
+#include "exynos_drm_dsi.h"
+
+enum {
+ DSI_PORT_IN,
+ DSI_PORT_OUT
+};
+
+struct exynos_dsi_pltfm {
+ struct exynos_dsi *dsi;
+ struct drm_encoder encoder;
+};
+
+static const unsigned int reg_values[] = {
+ [RESET_TYPE] = DSIM_SWRST,
+ [PLL_TIMER] = 500,
+ [STOP_STATE_CNT] = 0xf,
+ [PHYCTRL_ULPS_EXIT] = 0x0af,
+ [PHYCTRL_VREG_LP] = 0,
+ [PHYCTRL_SLEW_UP] = 0,
+ [PHYTIMING_LPX] = 0x06,
+ [PHYTIMING_HS_EXIT] = 0x0b,
+ [PHYTIMING_CLK_PREPARE] = 0x07,
+ [PHYTIMING_CLK_ZERO] = 0x27,
+ [PHYTIMING_CLK_POST] = 0x0d,
+ [PHYTIMING_CLK_TRAIL] = 0x08,
+ [PHYTIMING_HS_PREPARE] = 0x09,
+ [PHYTIMING_HS_ZERO] = 0x0d,
+ [PHYTIMING_HS_TRAIL] = 0x0b,
+};
+
+static const unsigned int exynos5422_reg_values[] = {
+ [RESET_TYPE] = DSIM_SWRST,
+ [PLL_TIMER] = 500,
+ [STOP_STATE_CNT] = 0xf,
+ [PHYCTRL_ULPS_EXIT] = 0xaf,
+ [PHYCTRL_VREG_LP] = 0,
+ [PHYCTRL_SLEW_UP] = 0,
+ [PHYTIMING_LPX] = 0x08,
+ [PHYTIMING_HS_EXIT] = 0x0d,
+ [PHYTIMING_CLK_PREPARE] = 0x09,
+ [PHYTIMING_CLK_ZERO] = 0x30,
+ [PHYTIMING_CLK_POST] = 0x0e,
+ [PHYTIMING_CLK_TRAIL] = 0x0a,
+ [PHYTIMING_HS_PREPARE] = 0x0c,
+ [PHYTIMING_HS_ZERO] = 0x11,
+ [PHYTIMING_HS_TRAIL] = 0x0d,
+};
+
+static const unsigned int exynos5433_reg_values[] = {
+ [RESET_TYPE] = DSIM_FUNCRST,
+ [PLL_TIMER] = 22200,
+ [STOP_STATE_CNT] = 0xa,
+ [PHYCTRL_ULPS_EXIT] = 0x190,
+ [PHYCTRL_VREG_LP] = 1,
+ [PHYCTRL_SLEW_UP] = 1,
+ [PHYTIMING_LPX] = 0x07,
+ [PHYTIMING_HS_EXIT] = 0x0c,
+ [PHYTIMING_CLK_PREPARE] = 0x09,
+ [PHYTIMING_CLK_ZERO] = 0x2d,
+ [PHYTIMING_CLK_POST] = 0x0e,
+ [PHYTIMING_CLK_TRAIL] = 0x09,
+ [PHYTIMING_HS_PREPARE] = 0x0b,
+ [PHYTIMING_HS_ZERO] = 0x10,
+ [PHYTIMING_HS_TRAIL] = 0x0c,
+};
+
+static int __exynos_dsi_host_attach(struct device *dev,
+ struct mipi_dsi_device *device)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+ struct drm_device *drm = dsi->encoder.dev;
+ struct exynos_drm_crtc *crtc;
+
+ mutex_lock(&drm->mode_config.mutex);
+ crtc = exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD);
+ crtc->i80_mode = !(device->mode_flags & MIPI_DSI_MODE_VIDEO);
+ mutex_unlock(&drm->mode_config.mutex);
+
+ if (drm->mode_config.poll_enabled)
+ drm_kms_helper_hotplug_event(drm);
+
+ return 0;
+}
+
+static int __exynos_dsi_host_detach(struct device *dev,
+ struct mipi_dsi_device *device)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+ struct drm_device *drm = dsi->encoder.dev;
+
+ if (drm->mode_config.poll_enabled)
+ drm_kms_helper_hotplug_event(drm);
+
+ return 0;
+}
+
+static void __exynos_dsi_te_handler(struct device *dev)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+
+ exynos_drm_crtc_te_handler(dsi->encoder.crtc);
+}
+
+static const struct exynos_dsi_host_ops exynos_dsi_host_ops = {
+ .attach = __exynos_dsi_host_attach,
+ .detach = __exynos_dsi_host_detach,
+ .te_handler = __exynos_dsi_te_handler,
+};
+
+static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = {
+ .reg_ofs = EXYNOS_REG_OFS,
+ .plltmr_reg = 0x50,
+ .has_freqband = 1,
+ .has_clklane_stop = 1,
+ .num_clks = 2,
+ .max_freq = 1000,
+ .wait_for_reset = 1,
+ .num_bits_resol = 11,
+ .reg_values = reg_values,
+ .host_ops = &exynos_dsi_host_ops,
+};
+
+static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = {
+ .reg_ofs = EXYNOS_REG_OFS,
+ .plltmr_reg = 0x50,
+ .has_freqband = 1,
+ .has_clklane_stop = 1,
+ .num_clks = 2,
+ .max_freq = 1000,
+ .wait_for_reset = 1,
+ .num_bits_resol = 11,
+ .reg_values = reg_values,
+ .host_ops = &exynos_dsi_host_ops,
+};
+
+static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = {
+ .reg_ofs = EXYNOS_REG_OFS,
+ .plltmr_reg = 0x58,
+ .num_clks = 2,
+ .max_freq = 1000,
+ .wait_for_reset = 1,
+ .num_bits_resol = 11,
+ .reg_values = reg_values,
+ .host_ops = &exynos_dsi_host_ops,
+};
+
+static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
+ .reg_ofs = EXYNOS5433_REG_OFS,
+ .plltmr_reg = 0xa0,
+ .has_clklane_stop = 1,
+ .num_clks = 5,
+ .max_freq = 1500,
+ .wait_for_reset = 0,
+ .num_bits_resol = 12,
+ .reg_values = exynos5433_reg_values,
+ .host_ops = &exynos_dsi_host_ops,
+};
+
+static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
+ .reg_ofs = EXYNOS5433_REG_OFS,
+ .plltmr_reg = 0xa0,
+ .has_clklane_stop = 1,
+ .num_clks = 2,
+ .max_freq = 1500,
+ .wait_for_reset = 1,
+ .num_bits_resol = 12,
+ .reg_values = exynos5422_reg_values,
+ .host_ops = &exynos_dsi_host_ops,
+};
+
+static const struct of_device_id exynos_dsi_of_match[] = {
+ { .compatible = "samsung,exynos3250-mipi-dsi",
+ .data = &exynos3_dsi_driver_data },
+ { .compatible = "samsung,exynos4210-mipi-dsi",
+ .data = &exynos4_dsi_driver_data },
+ { .compatible = "samsung,exynos5410-mipi-dsi",
+ .data = &exynos5_dsi_driver_data },
+ { .compatible = "samsung,exynos5422-mipi-dsi",
+ .data = &exynos5422_dsi_driver_data },
+ { .compatible = "samsung,exynos5433-mipi-dsi",
+ .data = &exynos5433_dsi_driver_data },
+ { }
+};
+
+static int exynos_dsi_pltfm_bind(struct device *dev, struct device *master, void *data)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+ struct drm_encoder *encoder = &dsi->encoder;
+ struct drm_device *drm_dev = data;
+ struct device_node *in_bridge_node;
+ struct drm_bridge *in_bridge;
+ int ret;
+
+ drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+
+ ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
+ if (ret < 0)
+ return ret;
+
+ in_bridge_node = of_graph_get_remote_node(dev->of_node, DSI_PORT_IN, 0);
+ if (in_bridge_node) {
+ in_bridge = of_drm_find_bridge(in_bridge_node);
+ if (in_bridge)
+ drm_bridge_attach(encoder, in_bridge, NULL, 0);
+ of_node_put(in_bridge_node);
+ }
+
+ ret = exynos_dsi_bind(dsi->dsi, encoder);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ drm_encoder_cleanup(encoder);
+ return ret;
+}
+
+static void exynos_dsi_pltfm_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+ struct drm_encoder *encoder = &dsi->encoder;
+
+ exynos_dsi_unbind(dsi->dsi);
+
+ drm_encoder_cleanup(encoder);
+}
+
+static const struct component_ops exynos_dsi_pltfm_component_ops = {
+ .bind = exynos_dsi_pltfm_bind,
+ .unbind = exynos_dsi_pltfm_unbind,
+};
+
+static int exynos_dsi_pltfm_probe(struct platform_device *pdev)
+{
+ struct exynos_dsi_pltfm *dsi;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
+ if (!dsi)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, dsi);
+
+ dsi->dsi = exynos_dsi_probe(pdev);
+ if (IS_ERR(dsi->dsi))
+ return PTR_ERR(dsi->dsi);
+
+ pm_runtime_enable(dev);
+
+ ret = component_add(dev, &exynos_dsi_pltfm_component_ops);
+ if (ret)
+ goto err_disable_runtime;
+
+ return 0;
+
+err_disable_runtime:
+ pm_runtime_disable(dev);
+
+ return ret;
+}
+
+static int exynos_dsi_pltfm_remove(struct platform_device *pdev)
+{
+ struct exynos_dsi_pltfm *dsi = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+
+ exynos_dsi_remove(dsi->dsi);
+
+ component_del(&pdev->dev, &exynos_dsi_pltfm_component_ops);
+
+ return 0;
+}
+
+static int __maybe_unused exynos_dsi_pltfm_suspend(struct device *dev)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+
+ return exynos_dsi_suspend(dsi->dsi);
+}
+
+static int __maybe_unused exynos_dsi_pltfm_resume(struct device *dev)
+{
+ struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
+
+ return exynos_dsi_resume(dsi->dsi);
+}
+
+static const struct dev_pm_ops exynos_dsi_pm_ops = {
+ SET_RUNTIME_PM_OPS(exynos_dsi_pltfm_suspend, exynos_dsi_pltfm_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+};
+
+struct platform_driver dsi_driver = {
+ .probe = exynos_dsi_pltfm_probe,
+ .remove = exynos_dsi_pltfm_remove,
+ .driver = {
+ .name = "exynos-dsi",
+ .owner = THIS_MODULE,
+ .pm = &exynos_dsi_pm_ops,
+ .of_match_table = exynos_dsi_of_match,
+ },
+};
+
+MODULE_AUTHOR("Tomasz Figa <t.figa at samsung.com>");
+MODULE_AUTHOR("Andrzej Hajda <a.hajda at samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");
+MODULE_LICENSE("GPL v2");
--
2.20.1
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