diff mbox series

[v2] drm/panel: samsung-s6d7aa0: transition to mipi_dsi wrapped functions

Message ID 20250319183106.12613-1-tejasvipin76@gmail.com (mailing list archive)
State New
Headers show
Series [v2] drm/panel: samsung-s6d7aa0: transition to mipi_dsi wrapped functions | expand

Commit Message

Tejas Vipin March 19, 2025, 6:31 p.m. UTC 
Changes the samsung-s6d7aa0 panel to use multi style functions for
improved error handling.

Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
---
Changes in v2:
    - Remove unnecessary early return in s6d7aa0_lock
    - Remove redundant GPIO reset setting in s6d7aa0_on.

Link to v1: https://lore.kernel.org/all/20250316045024.672167-1-tejasvipin76@gmail.com/
---
 drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 222 +++++-------------
 1 file changed, 65 insertions(+), 157 deletions(-)

Comments

Doug Anderson March 19, 2025, 8:05 p.m. UTC | #1 
Hi,

On Wed, Mar 19, 2025 at 11:31 AM Tejas Vipin <tejasvipin76@gmail.com> wrote:
>
> Changes the samsung-s6d7aa0 panel to use multi style functions for
> improved error handling.
>
> Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
> ---
> Changes in v2:
>     - Remove unnecessary early return in s6d7aa0_lock
>     - Remove redundant GPIO reset setting in s6d7aa0_on.
>
> Link to v1: https://lore.kernel.org/all/20250316045024.672167-1-tejasvipin76@gmail.com/
> ---
>  drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c | 222 +++++-------------
>  1 file changed, 65 insertions(+), 157 deletions(-)

Reviewed-by: Douglas Anderson <dianders@chromium.org>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
index f23d8832a1ad..9d219809ce38 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
@@ -34,8 +34,8 @@  struct s6d7aa0 {
 
 struct s6d7aa0_panel_desc {
 	unsigned int panel_type;
-	int (*init_func)(struct s6d7aa0 *ctx);
-	int (*off_func)(struct s6d7aa0 *ctx);
+	void (*init_func)(struct s6d7aa0 *ctx, struct mipi_dsi_multi_context *dsi_ctx);
+	void (*off_func)(struct mipi_dsi_multi_context *dsi_ctx);
 	const struct drm_display_mode *drm_mode;
 	unsigned long mode_flags;
 	u32 bus_flags;
@@ -62,93 +62,61 @@  static void s6d7aa0_reset(struct s6d7aa0 *ctx)
 	msleep(50);
 }
 
-static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
+static void s6d7aa0_lock(struct s6d7aa0 *ctx, struct mipi_dsi_multi_context *dsi_ctx, bool lock)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-
 	if (lock) {
-		mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
-		mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD2, 0xa5, 0xa5);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_PASSWD1, 0xa5, 0xa5);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_PASSWD2, 0xa5, 0xa5);
 		if (ctx->desc->use_passwd3)
-			mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0x5a, 0x5a);
+			mipi_dsi_dcs_write_seq_multi(dsi_ctx, 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);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_PASSWD1, 0x5a, 0x5a);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_PASSWD2, 0x5a, 0x5a);
 		if (ctx->desc->use_passwd3)
-			mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
+			mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_PASSWD3, 0xa5, 0xa5);
 	}
-
-	return 0;
 }
 
 static int s6d7aa0_on(struct s6d7aa0 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	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;
-	}
+	ctx->desc->init_func(ctx, &dsi_ctx);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
-static int s6d7aa0_off(struct s6d7aa0 *ctx)
+static void s6d7aa0_off(struct s6d7aa0 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = ctx->desc->off_func(ctx);
-	if (ret < 0) {
-		dev_err(dev, "Panel-specific off function failed: %d\n", ret);
-		return ret;
-	}
+	ctx->desc->off_func(&dsi_ctx);
 
-	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);
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 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);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
 
-	return 0;
+	mipi_dsi_msleep(&dsi_ctx, 120);
 }
 
 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);
+	if (ret < 0)
 		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;
 	}
@@ -159,12 +127,8 @@  static int s6d7aa0_prepare(struct drm_panel *panel)
 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);
+	s6d7aa0_off(ctx);
 
 	return 0;
 }
@@ -185,13 +149,11 @@  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;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
-	if (ret < 0)
-		return ret;
+	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, brightness);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int s6d7aa0_bl_get_brightness(struct backlight_device *bl)
@@ -228,65 +190,39 @@  s6d7aa0_create_backlight(struct mipi_dsi_device *dsi)
 
 /* Initialization code and structures for LSL080AL02 panel */
 
-static int s6d7aa0_lsl080al02_init(struct s6d7aa0 *ctx)
+static void s6d7aa0_lsl080al02_init(struct s6d7aa0 *ctx, struct mipi_dsi_multi_context *dsi_ctx)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	mipi_dsi_usleep_range(dsi_ctx, 20000, 25000);
 
-	usleep_range(20000, 25000);
+	s6d7aa0_lock(ctx, dsi_ctx, false);
 
-	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);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_OTP_RELOAD, 0x00, 0x10);
+	mipi_dsi_usleep_range(dsi_ctx, 1000, 1500);
 
 	/* SEQ_B6_PARAM_8_R01 */
-	mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x10);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 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_multi(dsi_ctx, MCS_BL_CTL, 0x40, 0x00, 0x28);
 
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x04);
+	mipi_dsi_usleep_range(dsi_ctx, 5000, 6000);
 
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x04);
 
-	msleep(120);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
+	mipi_dsi_dcs_exit_sleep_mode_multi(dsi_ctx);
 
-	ret = s6d7aa0_lock(ctx, true);
-	if (ret < 0) {
-		dev_err(dev, "Failed to lock registers: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_msleep(dsi_ctx, 120);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
+	s6d7aa0_lock(ctx, dsi_ctx, true);
 
-	return 0;
+	mipi_dsi_dcs_set_display_on_multi(dsi_ctx);
 }
 
-static int s6d7aa0_lsl080al02_off(struct s6d7aa0 *ctx)
+static void s6d7aa0_lsl080al02_off(struct mipi_dsi_multi_context *dsi_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;
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_BL_CTL, 0x40, 0x00, 0x20);
 }
 
 static const struct drm_display_mode s6d7aa0_lsl080al02_mode = {
@@ -317,79 +253,51 @@  static const struct s6d7aa0_panel_desc s6d7aa0_lsl080al02_desc = {
 
 /* Initialization code and structures for LSL080AL03 panel */
 
-static int s6d7aa0_lsl080al03_init(struct s6d7aa0 *ctx)
+static void s6d7aa0_lsl080al03_init(struct s6d7aa0 *ctx, struct mipi_dsi_multi_context *dsi_ctx)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
-
-	usleep_range(20000, 25000);
+	mipi_dsi_usleep_range(dsi_ctx, 20000, 25000);
 
-	ret = s6d7aa0_lock(ctx, false);
-	if (ret < 0) {
-		dev_err(dev, "Failed to unlock registers: %d\n", ret);
-		return ret;
-	}
+	s6d7aa0_lock(ctx, dsi_ctx, false);
 
 	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,
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_BL_CTL, 0xc7, 0x00, 0x29);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xbc, 0x01, 0x4e, 0xa0);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xfd, 0x16, 0x10, 0x11, 0x23,
 				       0x09);
-		mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00, 0x02, 0x03, 0x21,
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, 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,
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, MCS_BL_CTL, 0x40, 0x00, 0x08);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xbc, 0x01, 0x4e, 0x0b);
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xfd, 0x16, 0x10, 0x11, 0x23,
 				       0x09);
-		mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00, 0x02, 0x03, 0x21,
+		mipi_dsi_dcs_write_seq_multi(dsi_ctx, 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);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xb3, 0x51);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xf2, 0x02, 0x08, 0x08);
 
-	usleep_range(10000, 11000);
+	mipi_dsi_usleep_range(dsi_ctx, 10000, 11000);
 
-	mipi_dsi_dcs_write_seq(dsi, 0xc0, 0x80, 0x80, 0x30);
-	mipi_dsi_dcs_write_seq(dsi, 0xcd,
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xc0, 0x80, 0x80, 0x30);
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xcd,
 			       0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
 			       0x2e, 0x2e, 0x2e, 0x2e, 0x2e);
-	mipi_dsi_dcs_write_seq(dsi, 0xce,
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 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;
-	}
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0xc1, 0x03);
 
-	return 0;
+	mipi_dsi_dcs_exit_sleep_mode_multi(dsi_ctx);
+	s6d7aa0_lock(ctx, dsi_ctx, true);
+	mipi_dsi_dcs_set_display_on_multi(dsi_ctx);
 }
 
-static int s6d7aa0_lsl080al03_off(struct s6d7aa0 *ctx)
+static void s6d7aa0_lsl080al03_off(struct mipi_dsi_multi_context *dsi_ctx)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-
-	mipi_dsi_dcs_write_seq(dsi, 0x22, 0x00);
-
-	return 0;
+	mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0x22, 0x00);
 }
 
 static const struct drm_display_mode s6d7aa0_lsl080al03_mode = {