linux-kernel - [PATCH] drm/panel: sharp-ls060t1sx01: transition to mipi

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Message-ID: <20250201185439.157613-1-tejasvipin76@gmail.com>
Date: Sun,  2 Feb 2025 00:24:39 +0530
From: Tejas Vipin <tejasvipin76@...il.com>
To: neil.armstrong@...aro.org,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	simona@...ll.ch
Cc: quic_jesszhan@...cinc.com,
	dianders@...omium.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Tejas Vipin <tejasvipin76@...il.com>
Subject: [PATCH] drm/panel: sharp-ls060t1sx01: transition to mipi_dsi wrapped functions

Changes the sharp-ls060t1sx01 panel to use multi style functions for 
improved error handling.

Signed-off-by: Tejas Vipin <tejasvipin76@...il.com>
---
 .../gpu/drm/panel/panel-sharp-ls060t1sx01.c   | 59 +++++--------------
 1 file changed, 16 insertions(+), 43 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c b/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
index 74c760ee0c2d..0b4e0983639b 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls060t1sx01.c
@@ -44,60 +44,39 @@ static void sharp_ls060_reset(struct sharp_ls060 *ctx)
 static int sharp_ls060_on(struct sharp_ls060 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 
-	mipi_dsi_dcs_write_seq(dsi, 0xbb, 0x13);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_MEMORY_START);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbb, 0x13);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START);
 
-	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);
 
-	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(50);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 50);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
-static int sharp_ls060_off(struct sharp_ls060 *ctx)
+static void sharp_ls060_off(struct sharp_ls060 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->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;
-	}
-	usleep_range(2000, 3000);
-
-	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(121);
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000);
 
-	return 0;
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 121);
 }
 
 static int sharp_ls060_prepare(struct drm_panel *panel)
 {
 	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
-	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
 	ret = regulator_enable(ctx->vddi_supply);
@@ -125,10 +104,8 @@ static int sharp_ls060_prepare(struct drm_panel *panel)
 	sharp_ls060_reset(ctx);
 
 	ret = sharp_ls060_on(ctx);
-	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+	if (ret < 0)
 		goto err_on;
-	}
 
 	return 0;
 
@@ -154,12 +131,8 @@ static int sharp_ls060_prepare(struct drm_panel *panel)
 static int sharp_ls060_unprepare(struct drm_panel *panel)
 {
 	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
-	struct device *dev = &ctx->dsi->dev;
-	int ret;
 
-	ret = sharp_ls060_off(ctx);
-	if (ret < 0)
-		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+	sharp_ls060_off(ctx);
 
 	regulator_disable(ctx->vddh_supply);
 
-- 
2.48.1