[PATCH v3] drm/panel: boe-bf060y8m-aj0: transition to mipi_dsi wrapped functions

[Tejas Vipin <tejasvipin76@gmail.com>]

Changes the boe-bf060y8m-aj0 panel to use multi style functions for
improved error handling. Additionally the MIPI_DSI_MODE_LPM flag is set
after the off commands are run in boe_bf060y8m_aj0_off regardless of any
failures, and regulators are disabled if the boe_bf060y8m_aj0_on call in
boe_bf060y8m_aj0_prepare fails.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
---
Changes in v3:
    - Disable regulators in boe_bf060y8m_aj0_prepare if
      boe_bf060y8m_aj0_on fails.
Changes in v2:
    - Always set MIPI_DSI_MODE_LPM in boe_bf060y8m_aj0_off

Link to v2: https://lore.kernel.org/all/20250331061838.167781-1-tejasvipin76@gmail.com/
Link to v1: https://lore.kernel.org/all/20250330151304.128417-1-tejasvipin76@gmail.com/
---
 .../gpu/drm/panel/panel-boe-bf060y8m-aj0.c    | 109 +++++++-----------
 1 file changed, 41 insertions(+), 68 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c b/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
index 7e66db4a88bb..3b174b4a41b6 100644
--- a/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
+++ b/drivers/gpu/drm/panel/panel-boe-bf060y8m-aj0.c
@@ -55,71 +55,51 @@ static void boe_bf060y8m_aj0_reset(struct boe_bf060y8m_aj0 *boe)
 static int boe_bf060y8m_aj0_on(struct boe_bf060y8m_aj0 *boe)
 {
 	struct mipi_dsi_device *dsi = boe->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
-
-	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0xa5, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x00, 0x4c);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_3D_CONTROL, 0x10);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, DCS_ALLOW_HBM_RANGE);
-	mipi_dsi_dcs_write_seq(dsi, 0xf8,
-			       0x00, 0x08, 0x10, 0x00, 0x22, 0x00, 0x00, 0x2d);
-
-	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(30);
-
-	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0xa5, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, 0xc0,
-			       0x08, 0x48, 0x65, 0x33, 0x33, 0x33,
-			       0x2a, 0x31, 0x39, 0x20, 0x09);
-	mipi_dsi_dcs_write_seq(dsi, 0xc1, 0x00, 0x00, 0x00, 0x1f, 0x1f,
-			       0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f,
-			       0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
-	mipi_dsi_dcs_write_seq(dsi, 0xe2, 0x20, 0x04, 0x10, 0x12, 0x92,
-			       0x4f, 0x8f, 0x44, 0x84, 0x83, 0x83, 0x83,
-			       0x5c, 0x5c, 0x5c);
-	mipi_dsi_dcs_write_seq(dsi, 0xde, 0x01, 0x2c, 0x00, 0x77, 0x3e);
-
-	msleep(30);
-
-	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);
-
-	return 0;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0xa5, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb2, 0x00, 0x4c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_3D_CONTROL, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, DCS_ALLOW_HBM_RANGE);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8,
+				     0x00, 0x08, 0x10, 0x00, 0x22, 0x00, 0x00, 0x2d);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 30);
+
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0xa5, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0,
+				     0x08, 0x48, 0x65, 0x33, 0x33, 0x33,
+				     0x2a, 0x31, 0x39, 0x20, 0x09);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc1, 0x00, 0x00, 0x00, 0x1f, 0x1f,
+				     0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f,
+				     0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe2, 0x20, 0x04, 0x10, 0x12, 0x92,
+				     0x4f, 0x8f, 0x44, 0x84, 0x83, 0x83, 0x83,
+				     0x5c, 0x5c, 0x5c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xde, 0x01, 0x2c, 0x00, 0x77, 0x3e);
+
+	mipi_dsi_msleep(&dsi_ctx, 30);
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 50);
+
+	return dsi_ctx.accum_err;
 }
 
-static int boe_bf060y8m_aj0_off(struct boe_bf060y8m_aj0 *boe)
+static void boe_bf060y8m_aj0_off(struct boe_bf060y8m_aj0 *boe)
 {
 	struct mipi_dsi_device *dsi = boe->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	/* OFF commands sent in HS mode */
 	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;
-	}
-	msleep(20);
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
-		return ret;
-	}
-	usleep_range(1000, 2000);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 1000, 2000);
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
-
-	return 0;
 }
 
 static int boe_bf060y8m_aj0_prepare(struct drm_panel *panel)
@@ -157,7 +137,6 @@ static int boe_bf060y8m_aj0_prepare(struct drm_panel *panel)
 
 	ret = boe_bf060y8m_aj0_on(boe);
 	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
 		gpiod_set_value_cansleep(boe->reset_gpio, 1);
 		return ret;
 	}
@@ -178,15 +157,11 @@ static int boe_bf060y8m_aj0_prepare(struct drm_panel *panel)
 static int boe_bf060y8m_aj0_unprepare(struct drm_panel *panel)
 {
 	struct boe_bf060y8m_aj0 *boe = to_boe_bf060y8m_aj0(panel);
-	struct device *dev = &boe->dsi->dev;
-	int ret;
 
-	ret = boe_bf060y8m_aj0_off(boe);
-	if (ret < 0)
-		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+	boe_bf060y8m_aj0_off(boe);
 
 	gpiod_set_value_cansleep(boe->reset_gpio, 1);
-	ret = regulator_bulk_disable(ARRAY_SIZE(boe->vregs), boe->vregs);
+	regulator_bulk_disable(ARRAY_SIZE(boe->vregs), boe->vregs);
 
 	return 0;
 }
@@ -234,13 +209,11 @@ static int boe_bf060y8m_aj0_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 boe_bf060y8m_aj0_bl_get_brightness(struct backlight_device *bl)
-- 
2.49.0