mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 22:21:40 +00:00
drm/panel: Add Samsung S6D7AA0 panel controller driver
Initial driver for S6D7AA0-controlled panels. Currently, the following panels are supported: - S6D7AA0-LSL080AL02 (Samsung Galaxy Tab 3 8.0) - S6D7AA0-LSL080AL03 (Samsung Galaxy Tab A 8.0 2015) - S6D7AA0-LTL101AT01 (Samsung Galaxy Tab A 9.7 2015) It should be possible to extend this driver to work with other panels using this IC. Tested-by: Nikita Travkin <nikita@trvn.ru> #ltl101at01 Signed-off-by: Artur Weber <aweber.kernel@gmail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230519170354.29610-3-aweber.kernel@gmail.com
This commit is contained in:
parent
dda4456514
commit
6810bb3902
@ -553,6 +553,13 @@ config DRM_PANEL_SAMSUNG_S6D27A1
|
||||
This panel can be found in Samsung Galaxy Ace 2
|
||||
GT-I8160 mobile phone.
|
||||
|
||||
config DRM_PANEL_SAMSUNG_S6D7AA0
|
||||
tristate "Samsung S6D7AA0 MIPI-DSI video mode panel controller"
|
||||
depends on OF
|
||||
depends on BACKLIGHT_CLASS_DEVICE
|
||||
select DRM_MIPI_DSI
|
||||
select VIDEOMODE_HELPERS
|
||||
|
||||
config DRM_PANEL_SAMSUNG_S6E3HA2
|
||||
tristate "Samsung S6E3HA2 DSI video mode panel"
|
||||
depends on OF
|
||||
|
@ -54,6 +54,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D27A1) += panel-samsung-s6d27a1.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D7AA0) += panel-samsung-s6d7aa0.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
|
||||
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0) += panel-samsung-s6e63m0.o
|
||||
|
585
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
Normal file
585
drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
Normal file
@ -0,0 +1,585 @@
|
||||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Samsung S6D7AA0 MIPI-DSI TFT LCD controller drm_panel driver.
|
||||
*
|
||||
* Copyright (C) 2022 Artur Weber <aweber.kernel@gmail.com>
|
||||
*/
|
||||
|
||||
#include <linux/backlight.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/gpio/consumer.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
|
||||
#include <video/mipi_display.h>
|
||||
#include <drm/drm_mipi_dsi.h>
|
||||
#include <drm/drm_modes.h>
|
||||
#include <drm/drm_panel.h>
|
||||
|
||||
/* Manufacturer command set */
|
||||
#define MCS_BL_CTL 0xc3
|
||||
#define MCS_OTP_RELOAD 0xd0
|
||||
#define MCS_PASSWD1 0xf0
|
||||
#define MCS_PASSWD2 0xf1
|
||||
#define MCS_PASSWD3 0xfc
|
||||
|
||||
struct s6d7aa0 {
|
||||
struct drm_panel panel;
|
||||
struct mipi_dsi_device *dsi;
|
||||
struct gpio_desc *reset_gpio;
|
||||
struct regulator_bulk_data supplies[2];
|
||||
const struct s6d7aa0_panel_desc *desc;
|
||||
};
|
||||
|
||||
struct s6d7aa0_panel_desc {
|
||||
unsigned int panel_type;
|
||||
int (*init_func)(struct s6d7aa0 *ctx);
|
||||
int (*off_func)(struct s6d7aa0 *ctx);
|
||||
const struct drm_display_mode drm_mode;
|
||||
unsigned long mode_flags;
|
||||
u32 bus_flags;
|
||||
bool has_backlight;
|
||||
bool use_passwd3;
|
||||
};
|
||||
|
||||
enum s6d7aa0_panels {
|
||||
S6D7AA0_PANEL_LSL080AL02,
|
||||
S6D7AA0_PANEL_LSL080AL03,
|
||||
S6D7AA0_PANEL_LTL101AT01,
|
||||
};
|
||||
|
||||
static inline struct s6d7aa0 *panel_to_s6d7aa0(struct drm_panel *panel)
|
||||
{
|
||||
return container_of(panel, struct s6d7aa0, panel);
|
||||
}
|
||||
|
||||
static void s6d7aa0_reset(struct s6d7aa0 *ctx)
|
||||
{
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
|
||||
msleep(50);
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
|
||||
msleep(50);
|
||||
}
|
||||
|
||||
static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
int ret = 0;
|
||||
|
||||
if (lock) {
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD2, 0xa5, 0xa5);
|
||||
if (ctx->desc->use_passwd3)
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0x5a, 0x5a);
|
||||
} else {
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0x5a, 0x5a);
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD2, 0x5a, 0x5a);
|
||||
if (ctx->desc->use_passwd3)
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s6d7aa0_on(struct s6d7aa0 *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
struct device *dev = &dsi->dev;
|
||||
int ret;
|
||||
|
||||
ret = ctx->desc->init_func(ctx);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to initialize panel: %d\n", ret);
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_on(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to set display on: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_off(struct s6d7aa0 *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
struct device *dev = &dsi->dev;
|
||||
int ret;
|
||||
|
||||
ret = ctx->desc->off_func(ctx);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Panel-specific off function failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_off(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to set display off: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
msleep(64);
|
||||
|
||||
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
msleep(120);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_prepare(struct drm_panel *panel)
|
||||
{
|
||||
struct s6d7aa0 *ctx = panel_to_s6d7aa0(panel);
|
||||
struct device *dev = &ctx->dsi->dev;
|
||||
int ret;
|
||||
|
||||
ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to enable regulators: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
s6d7aa0_reset(ctx);
|
||||
|
||||
ret = s6d7aa0_on(ctx);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to initialize panel: %d\n", ret);
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_disable(struct drm_panel *panel)
|
||||
{
|
||||
struct s6d7aa0 *ctx = panel_to_s6d7aa0(panel);
|
||||
struct device *dev = &ctx->dsi->dev;
|
||||
int ret;
|
||||
|
||||
ret = s6d7aa0_off(ctx);
|
||||
if (ret < 0)
|
||||
dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_unprepare(struct drm_panel *panel)
|
||||
{
|
||||
struct s6d7aa0 *ctx = panel_to_s6d7aa0(panel);
|
||||
|
||||
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
|
||||
regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Backlight control code */
|
||||
|
||||
static int s6d7aa0_bl_update_status(struct backlight_device *bl)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = bl_get_data(bl);
|
||||
u16 brightness = backlight_get_brightness(bl);
|
||||
int ret;
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_bl_get_brightness(struct backlight_device *bl)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = bl_get_data(bl);
|
||||
u16 brightness;
|
||||
int ret;
|
||||
|
||||
ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return brightness & 0xff;
|
||||
}
|
||||
|
||||
static const struct backlight_ops s6d7aa0_bl_ops = {
|
||||
.update_status = s6d7aa0_bl_update_status,
|
||||
.get_brightness = s6d7aa0_bl_get_brightness,
|
||||
};
|
||||
|
||||
static struct backlight_device *
|
||||
s6d7aa0_create_backlight(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct device *dev = &dsi->dev;
|
||||
const struct backlight_properties props = {
|
||||
.type = BACKLIGHT_RAW,
|
||||
.brightness = 255,
|
||||
.max_brightness = 255,
|
||||
};
|
||||
|
||||
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
|
||||
&s6d7aa0_bl_ops, &props);
|
||||
}
|
||||
|
||||
/* Initialization code and structures for LSL080AL02 panel */
|
||||
|
||||
static int s6d7aa0_lsl080al02_init(struct s6d7aa0 *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
struct device *dev = &dsi->dev;
|
||||
int ret;
|
||||
|
||||
usleep_range(20000, 25000);
|
||||
|
||||
ret = s6d7aa0_lock(ctx, false);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to unlock registers: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_OTP_RELOAD, 0x00, 0x10);
|
||||
usleep_range(1000, 1500);
|
||||
|
||||
/* SEQ_B6_PARAM_8_R01 */
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x10);
|
||||
|
||||
/* BL_CTL_ON */
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_BL_CTL, 0x40, 0x00, 0x28);
|
||||
|
||||
usleep_range(5000, 6000);
|
||||
|
||||
mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x04);
|
||||
|
||||
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
msleep(120);
|
||||
mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
|
||||
|
||||
ret = s6d7aa0_lock(ctx, true);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to lock registers: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_on(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to set display on: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_lsl080al02_off(struct s6d7aa0 *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
|
||||
/* BL_CTL_OFF */
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_BL_CTL, 0x40, 0x00, 0x20);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct drm_display_mode s6d7aa0_lsl080al02_mode = {
|
||||
.clock = (800 + 16 + 4 + 140) * (1280 + 8 + 4 + 4) * 60 / 1000,
|
||||
.hdisplay = 800,
|
||||
.hsync_start = 800 + 16,
|
||||
.hsync_end = 800 + 16 + 4,
|
||||
.htotal = 800 + 16 + 4 + 140,
|
||||
.vdisplay = 1280,
|
||||
.vsync_start = 1280 + 8,
|
||||
.vsync_end = 1280 + 8 + 4,
|
||||
.vtotal = 1280 + 8 + 4 + 4,
|
||||
.width_mm = 108,
|
||||
.height_mm = 173,
|
||||
};
|
||||
|
||||
static const struct s6d7aa0_panel_desc s6d7aa0_lsl080al02_desc = {
|
||||
.panel_type = S6D7AA0_PANEL_LSL080AL02,
|
||||
.init_func = s6d7aa0_lsl080al02_init,
|
||||
.off_func = s6d7aa0_lsl080al02_off,
|
||||
.drm_mode = s6d7aa0_lsl080al02_mode,
|
||||
.mode_flags = MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_NO_HFP,
|
||||
.bus_flags = DRM_BUS_FLAG_DE_HIGH,
|
||||
|
||||
.has_backlight = false,
|
||||
.use_passwd3 = false,
|
||||
};
|
||||
|
||||
/* Initialization code and structures for LSL080AL03 panel */
|
||||
|
||||
static int s6d7aa0_lsl080al03_init(struct s6d7aa0 *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
struct device *dev = &dsi->dev;
|
||||
int ret;
|
||||
|
||||
usleep_range(20000, 25000);
|
||||
|
||||
ret = s6d7aa0_lock(ctx, false);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to unlock registers: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (ctx->desc->panel_type == S6D7AA0_PANEL_LSL080AL03) {
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_BL_CTL, 0xc7, 0x00, 0x29);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xbc, 0x01, 0x4e, 0xa0);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xfd, 0x16, 0x10, 0x11, 0x23,
|
||||
0x09);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00, 0x02, 0x03, 0x21,
|
||||
0x80, 0x78);
|
||||
} else if (ctx->desc->panel_type == S6D7AA0_PANEL_LTL101AT01) {
|
||||
mipi_dsi_dcs_write_seq(dsi, MCS_BL_CTL, 0x40, 0x00, 0x08);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xbc, 0x01, 0x4e, 0x0b);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xfd, 0x16, 0x10, 0x11, 0x23,
|
||||
0x09);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00, 0x02, 0x03, 0x21,
|
||||
0x80, 0x68);
|
||||
}
|
||||
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xb3, 0x51);
|
||||
mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x02, 0x08, 0x08);
|
||||
|
||||
usleep_range(10000, 11000);
|
||||
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xc0, 0x80, 0x80, 0x30);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xcd,
|
||||
0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
|
||||
0x2e, 0x2e, 0x2e, 0x2e, 0x2e);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xce,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00);
|
||||
mipi_dsi_dcs_write_seq(dsi, 0xc1, 0x03);
|
||||
|
||||
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = s6d7aa0_lock(ctx, true);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to lock registers: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = mipi_dsi_dcs_set_display_on(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to set display on: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s6d7aa0_lsl080al03_off(struct s6d7aa0 *ctx)
|
||||
{
|
||||
struct mipi_dsi_device *dsi = ctx->dsi;
|
||||
|
||||
mipi_dsi_dcs_write_seq(dsi, 0x22, 0x00);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct drm_display_mode s6d7aa0_lsl080al03_mode = {
|
||||
.clock = (768 + 18 + 16 + 126) * (1024 + 8 + 2 + 6) * 60 / 1000,
|
||||
.hdisplay = 768,
|
||||
.hsync_start = 768 + 18,
|
||||
.hsync_end = 768 + 18 + 16,
|
||||
.htotal = 768 + 18 + 16 + 126,
|
||||
.vdisplay = 1024,
|
||||
.vsync_start = 1024 + 8,
|
||||
.vsync_end = 1024 + 8 + 2,
|
||||
.vtotal = 1024 + 8 + 2 + 6,
|
||||
.width_mm = 122,
|
||||
.height_mm = 163,
|
||||
};
|
||||
|
||||
static const struct s6d7aa0_panel_desc s6d7aa0_lsl080al03_desc = {
|
||||
.panel_type = S6D7AA0_PANEL_LSL080AL03,
|
||||
.init_func = s6d7aa0_lsl080al03_init,
|
||||
.off_func = s6d7aa0_lsl080al03_off,
|
||||
.drm_mode = s6d7aa0_lsl080al03_mode,
|
||||
.mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET,
|
||||
.bus_flags = 0,
|
||||
|
||||
.has_backlight = true,
|
||||
.use_passwd3 = true,
|
||||
};
|
||||
|
||||
/* Initialization structures for LTL101AT01 panel */
|
||||
|
||||
static const struct drm_display_mode s6d7aa0_ltl101at01_mode = {
|
||||
.clock = (768 + 96 + 16 + 184) * (1024 + 8 + 2 + 6) * 60 / 1000,
|
||||
.hdisplay = 768,
|
||||
.hsync_start = 768 + 96,
|
||||
.hsync_end = 768 + 96 + 16,
|
||||
.htotal = 768 + 96 + 16 + 184,
|
||||
.vdisplay = 1024,
|
||||
.vsync_start = 1024 + 8,
|
||||
.vsync_end = 1024 + 8 + 2,
|
||||
.vtotal = 1024 + 8 + 2 + 6,
|
||||
.width_mm = 148,
|
||||
.height_mm = 197,
|
||||
};
|
||||
|
||||
static const struct s6d7aa0_panel_desc s6d7aa0_ltl101at01_desc = {
|
||||
.panel_type = S6D7AA0_PANEL_LTL101AT01,
|
||||
.init_func = s6d7aa0_lsl080al03_init, /* Similar init to LSL080AL03 */
|
||||
.off_func = s6d7aa0_lsl080al03_off,
|
||||
.drm_mode = s6d7aa0_ltl101at01_mode,
|
||||
.mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET,
|
||||
.bus_flags = 0,
|
||||
|
||||
.has_backlight = true,
|
||||
.use_passwd3 = true,
|
||||
};
|
||||
|
||||
static int s6d7aa0_get_modes(struct drm_panel *panel,
|
||||
struct drm_connector *connector)
|
||||
{
|
||||
struct drm_display_mode *mode;
|
||||
struct s6d7aa0 *ctx;
|
||||
|
||||
ctx = container_of(panel, struct s6d7aa0, panel);
|
||||
if (!ctx)
|
||||
return -EINVAL;
|
||||
|
||||
mode = drm_mode_duplicate(connector->dev, &ctx->desc->drm_mode);
|
||||
if (!mode)
|
||||
return -ENOMEM;
|
||||
|
||||
drm_mode_set_name(mode);
|
||||
|
||||
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
|
||||
connector->display_info.width_mm = mode->width_mm;
|
||||
connector->display_info.height_mm = mode->height_mm;
|
||||
connector->display_info.bus_flags = ctx->desc->bus_flags;
|
||||
drm_mode_probed_add(connector, mode);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static const struct drm_panel_funcs s6d7aa0_panel_funcs = {
|
||||
.disable = s6d7aa0_disable,
|
||||
.prepare = s6d7aa0_prepare,
|
||||
.unprepare = s6d7aa0_unprepare,
|
||||
.get_modes = s6d7aa0_get_modes,
|
||||
};
|
||||
|
||||
static int s6d7aa0_probe(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct device *dev = &dsi->dev;
|
||||
struct s6d7aa0 *ctx;
|
||||
int ret;
|
||||
|
||||
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
|
||||
if (!ctx)
|
||||
return -ENOMEM;
|
||||
|
||||
ctx->desc = of_device_get_match_data(dev);
|
||||
if (!ctx->desc)
|
||||
return -ENODEV;
|
||||
|
||||
ctx->supplies[0].supply = "power";
|
||||
ctx->supplies[1].supply = "vmipi";
|
||||
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
|
||||
ctx->supplies);
|
||||
if (ret < 0)
|
||||
return dev_err_probe(dev, ret, "Failed to get regulators\n");
|
||||
|
||||
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(ctx->reset_gpio))
|
||||
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
|
||||
"Failed to get reset-gpios\n");
|
||||
|
||||
ctx->dsi = dsi;
|
||||
mipi_dsi_set_drvdata(dsi, ctx);
|
||||
|
||||
dsi->lanes = 4;
|
||||
dsi->format = MIPI_DSI_FMT_RGB888;
|
||||
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST
|
||||
| ctx->desc->mode_flags;
|
||||
|
||||
drm_panel_init(&ctx->panel, dev, &s6d7aa0_panel_funcs,
|
||||
DRM_MODE_CONNECTOR_DSI);
|
||||
ctx->panel.prepare_prev_first = true;
|
||||
|
||||
ret = drm_panel_of_backlight(&ctx->panel);
|
||||
if (ret)
|
||||
return dev_err_probe(dev, ret, "Failed to get backlight\n");
|
||||
|
||||
/* Use DSI-based backlight as fallback if available */
|
||||
if (ctx->desc->has_backlight && !ctx->panel.backlight) {
|
||||
ctx->panel.backlight = s6d7aa0_create_backlight(dsi);
|
||||
if (IS_ERR(ctx->panel.backlight))
|
||||
return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
|
||||
"Failed to create backlight\n");
|
||||
}
|
||||
|
||||
drm_panel_add(&ctx->panel);
|
||||
|
||||
ret = mipi_dsi_attach(dsi);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
|
||||
drm_panel_remove(&ctx->panel);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void s6d7aa0_remove(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct s6d7aa0 *ctx = mipi_dsi_get_drvdata(dsi);
|
||||
int ret;
|
||||
|
||||
ret = mipi_dsi_detach(dsi);
|
||||
if (ret < 0)
|
||||
dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
|
||||
|
||||
drm_panel_remove(&ctx->panel);
|
||||
}
|
||||
|
||||
static const struct of_device_id s6d7aa0_of_match[] = {
|
||||
{
|
||||
.compatible = "samsung,lsl080al02",
|
||||
.data = &s6d7aa0_lsl080al02_desc
|
||||
},
|
||||
{
|
||||
.compatible = "samsung,lsl080al03",
|
||||
.data = &s6d7aa0_lsl080al03_desc
|
||||
},
|
||||
{
|
||||
.compatible = "samsung,ltl101at01",
|
||||
.data = &s6d7aa0_ltl101at01_desc
|
||||
},
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static struct mipi_dsi_driver s6d7aa0_driver = {
|
||||
.probe = s6d7aa0_probe,
|
||||
.remove = s6d7aa0_remove,
|
||||
.driver = {
|
||||
.name = "panel-samsung-s6d7aa0",
|
||||
.of_match_table = s6d7aa0_of_match,
|
||||
},
|
||||
};
|
||||
module_mipi_dsi_driver(s6d7aa0_driver);
|
||||
|
||||
MODULE_AUTHOR("Artur Weber <aweber.kernel@gmail.com>");
|
||||
MODULE_DESCRIPTION("Samsung S6D7AA0 MIPI-DSI LCD controller driver");
|
||||
MODULE_LICENSE("GPL");
|
Loading…
Reference in New Issue
Block a user