[PATCH v2] drm/panel: raydium-rm69380: transition to mipi_dsi wrapped functions

[Tejas Vipin]

Changes the raydium-rm69380 panel to use multi style functions for
improved error handling.

Reviewed-by: Douglas Anderson <dianders at chromium.org>
Signed-off-by: Tejas Vipin <tejasvipin76 at gmail.com>
---
Changes in v2:
    - Fix whitespace issues

Link to v1: https://lore.kernel.org/all/20240907140130.410349-1-tejasvipin76@gmail.com/
---
 drivers/gpu/drm/panel/panel-raydium-rm69380.c | 93 ++++++-------------
 1 file changed, 29 insertions(+), 64 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-raydium-rm69380.c b/drivers/gpu/drm/panel/panel-raydium-rm69380.c
index 4dca6802faef..d3071c01aaea 100644
--- a/drivers/gpu/drm/panel/panel-raydium-rm69380.c
+++ b/drivers/gpu/drm/panel/panel-raydium-rm69380.c
@@ -46,108 +46,73 @@ static void rm69380_reset(struct rm69380_panel *ctx)
 static int rm69380_on(struct rm69380_panel *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi[0];
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 	if (ctx->dsi[1])
 		ctx->dsi[1]->mode_flags |= MIPI_DSI_MODE_LPM;
 
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd4);
-	mipi_dsi_dcs_write_seq(dsi, 0x00, 0x80);
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd0);
-	mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x26);
-	mipi_dsi_dcs_write_seq(dsi, 0x75, 0x3f);
-	mipi_dsi_dcs_write_seq(dsi, 0x1d, 0x1a);
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);
-	mipi_dsi_dcs_write_seq(dsi, 0xc2, 0x08);
-
-	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;
-	}
-
-	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(20);
-
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
-	msleep(36);
-
-	return 0;
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd4);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x00, 0x80);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd0);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x48, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x26);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0x3f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1d, 0x1a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x08);
+
+	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 36);
+
+	return dsi_ctx.accum_err;
 }
 
-static int rm69380_off(struct rm69380_panel *ctx)
+static void rm69380_off(struct rm69380_panel *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi[0];
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 	if (ctx->dsi[1])
 		ctx->dsi[1]->mode_flags &= ~MIPI_DSI_MODE_LPM;
 
-	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(35);
-
-	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(20);
-
-	return 0;
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 35);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
 }
 
 static int rm69380_prepare(struct drm_panel *panel)
 {
 	struct rm69380_panel *ctx = to_rm69380_panel(panel);
-	struct device *dev = &ctx->dsi[0]->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;
-	}
 
 	rm69380_reset(ctx);
 
 	ret = rm69380_on(ctx);
 	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-		return ret;
 	}
 
-	return 0;
+	return ret;
 }
 
 static int rm69380_unprepare(struct drm_panel *panel)
 {
 	struct rm69380_panel *ctx = to_rm69380_panel(panel);
-	struct device *dev = &ctx->dsi[0]->dev;
-	int ret;
 
-	ret = rm69380_off(ctx);
-	if (ret < 0)
-		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+	rm69380_off(ctx);
 
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-- 
2.46.0