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Message-ID: <20240925080003.1250448-1-tejasvipin76@gmail.com>
Date: Wed, 25 Sep 2024 13:30:03 +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,
daniel@...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 v3] drm/panel: elida-kd35t133: transition to mipi_dsi wrapped functions
Changes the elida-kd35t133 panel to use multi style functions for
improved error handling.
Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Tejas Vipin <tejasvipin76@...il.com>
---
Changes in v3:
- Added back bytes that were removed
- Replaced mipi_dsi_dcs_write_buffer_multi with mipi_dsi_dcs_write_seq_multi
Changes in v2:
- Changed mipi_dsi_dcs_write to mipi_dsi_dcs_write_buffer_multi
- Cleaned up error handling
Link to v2: https://lore.kernel.org/all/20240923122558.728516-1-tejasvipin76@gmail.com/
Link to v1: https://lore.kernel.org/all/20240917071710.1254520-1-tejasvipin76@gmail.com/
---
drivers/gpu/drm/panel/panel-elida-kd35t133.c | 108 ++++++++-----------
1 file changed, 45 insertions(+), 63 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
index 00791ea81e90..b904d5437444 100644
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@@ -50,55 +50,44 @@ static inline struct kd35t133 *panel_to_kd35t133(struct drm_panel *panel)
return container_of(panel, struct kd35t133, panel);
}
-static int kd35t133_init_sequence(struct kd35t133 *ctx)
+static void kd35t133_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
{
- struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
- struct device *dev = ctx->dev;
-
/*
* Init sequence was supplied by the panel vendor with minimal
* documentation.
*/
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_POSITIVEGAMMA,
- 0x00, 0x13, 0x18, 0x04, 0x0f, 0x06, 0x3a, 0x56,
- 0x4d, 0x03, 0x0a, 0x06, 0x30, 0x3e, 0x0f);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_NEGATIVEGAMMA,
- 0x00, 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34,
- 0x4d, 0x06, 0x0d, 0x0b, 0x31, 0x37, 0x0f);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL1, 0x18, 0x17);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL2, 0x41);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_VCOMCONTROL, 0x00, 0x1a, 0x80);
- mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x48);
- mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_INTERFACEMODECTRL, 0x00);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_FRAMERATECTRL, 0xa0);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYINVERSIONCTRL, 0x02);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYFUNCTIONCTRL,
- 0x20, 0x02);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_SETIMAGEFUNCTION, 0x00);
- mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_ADJUSTCONTROL3,
- 0xa9, 0x51, 0x2c, 0x82);
- mipi_dsi_dcs_write(dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0);
-
- dev_dbg(dev, "Panel init sequence done\n");
- return 0;
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_POSITIVEGAMMA,
+ 0x00, 0x13, 0x18, 0x04, 0x0f, 0x06, 0x3a, 0x56,
+ 0x4d, 0x03, 0x0a, 0x06, 0x30, 0x3e, 0x0f);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_NEGATIVEGAMMA,
+ 0x00, 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34,
+ 0x4d, 0x06, 0x0d, 0x0b, 0x31, 0x37, 0x0f);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_POWERCONTROL1, 0x18, 0x17);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_POWERCONTROL2, 0x41);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_VCOMCONTROL, 0x00, 0x1a, 0x80);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x48);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_INTERFACEMODECTRL, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_FRAMERATECTRL, 0xa0);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_DISPLAYINVERSIONCTRL, 0x02);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_DISPLAYFUNCTIONCTRL,
+ 0x20, 0x02);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_SETIMAGEFUNCTION, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_ADJUSTCONTROL3,
+ 0xa9, 0x51, 0x2c, 0x82);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, MIPI_DCS_ENTER_INVERT_MODE);
}
static int kd35t133_unprepare(struct drm_panel *panel)
{
struct kd35t133 *ctx = panel_to_kd35t133(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
- int ret;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
- ret = mipi_dsi_dcs_set_display_off(dsi);
- if (ret < 0)
- dev_err(ctx->dev, "failed to set display off: %d\n", ret);
-
- ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
- if (ret < 0) {
- dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);
- return ret;
- }
+ mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+ mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+ if (dsi_ctx.accum_err)
+ return dsi_ctx.accum_err;
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
@@ -112,18 +101,20 @@ static int kd35t133_prepare(struct drm_panel *panel)
{
struct kd35t133 *ctx = panel_to_kd35t133(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
- int ret;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
dev_dbg(ctx->dev, "Resetting the panel\n");
- ret = regulator_enable(ctx->vdd);
- if (ret < 0) {
- dev_err(ctx->dev, "Failed to enable vdd supply: %d\n", ret);
- return ret;
+ dsi_ctx.accum_err = regulator_enable(ctx->vdd);
+ if (dsi_ctx.accum_err) {
+ dev_err(ctx->dev, "Failed to enable vdd supply: %d\n",
+ dsi_ctx.accum_err);
+ return dsi_ctx.accum_err;
}
- ret = regulator_enable(ctx->iovcc);
- if (ret < 0) {
- dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);
+ dsi_ctx.accum_err = regulator_enable(ctx->iovcc);
+ if (dsi_ctx.accum_err) {
+ dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n",
+ dsi_ctx.accum_err);
goto disable_vdd;
}
@@ -135,27 +126,18 @@ static int kd35t133_prepare(struct drm_panel *panel)
msleep(20);
- ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
- if (ret < 0) {
- dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
- goto disable_iovcc;
- }
+ mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+ mipi_dsi_msleep(&dsi_ctx, 250);
- msleep(250);
+ kd35t133_init_sequence(&dsi_ctx);
+ if (!dsi_ctx.accum_err)
+ dev_dbg(ctx->dev, "Panel init sequence done\n");
- ret = kd35t133_init_sequence(ctx);
- if (ret < 0) {
- dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
- goto disable_iovcc;
- }
+ mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+ mipi_dsi_msleep(&dsi_ctx, 50);
- ret = mipi_dsi_dcs_set_display_on(dsi);
- if (ret < 0) {
- dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
+ if (dsi_ctx.accum_err)
goto disable_iovcc;
- }
-
- msleep(50);
return 0;
@@ -163,7 +145,7 @@ static int kd35t133_prepare(struct drm_panel *panel)
regulator_disable(ctx->iovcc);
disable_vdd:
regulator_disable(ctx->vdd);
- return ret;
+ return dsi_ctx.accum_err;
}
static const struct drm_display_mode default_mode = {
--
2.46.1
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