Re: [PATCH] drm/panel: samsung-s6e3fa7: transition to mipi_dsi wrapped functions

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On 9/2/2024 12:10 AM, Tejas Vipin wrote:
Changes the samsung-s6e3fa7 panel to use multi style functions for
improved error handling.

Signed-off-by: Tejas Vipin <tejasvipin76@xxxxxxxxx>

Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>

---
  drivers/gpu/drm/panel/panel-samsung-s6e3fa7.c | 71 ++++++-------------
  1 file changed, 21 insertions(+), 50 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e3fa7.c b/drivers/gpu/drm/panel/panel-samsung-s6e3fa7.c
index 10bc8fb5f1f9..27a059b55ae5 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e3fa7.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e3fa7.c
@@ -38,57 +38,38 @@ static void s6e3fa7_panel_reset(struct s6e3fa7_panel *ctx)
  	usleep_range(10000, 11000);
  }
-static int s6e3fa7_panel_on(struct s6e3fa7_panel *ctx)
+static int s6e3fa7_panel_on(struct mipi_dsi_device *dsi)
  {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
- 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_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
+	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
- ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set tear on: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x5a, 0x5a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4,
+				     0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0,
+				     0x00, 0xb4, 0x37, 0x70, 0x79, 0x69);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xa5, 0xa5);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
- mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
-	mipi_dsi_dcs_write_seq(dsi, 0xf4,
-			       0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0,
-			       0x00, 0xb4, 0x37, 0x70, 0x79, 0x69);
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+	mipi_dsi_dcs_set_display_on_multi(&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;
-	}
-
-	return 0;
+	return dsi_ctx.accum_err;
  }
static int s6e3fa7_panel_prepare(struct drm_panel *panel)
  {
  	struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
-	struct device *dev = &ctx->dsi->dev;
  	int ret;
s6e3fa7_panel_reset(ctx); - ret = s6e3fa7_panel_on(ctx);
-	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+	ret = s6e3fa7_panel_on(ctx->dsi);
+	if (ret < 0)
  		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
-		return ret;
-	}
- return 0;
+	return ret;
  }
static int s6e3fa7_panel_unprepare(struct drm_panel *panel)
@@ -104,23 +85,13 @@ static int s6e3fa7_panel_disable(struct drm_panel *panel)
  {
  	struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
  	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int 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;
-	}
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
- 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_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
- return 0;
+	return dsi_ctx.accum_err;
  }
static const struct drm_display_mode s6e3fa7_panel_mode = {
--
2.46.0




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