drivers/gpu/drm/panel/panel-elida-kd35t133.c | 107 ++++++++----------- 1 file changed, 45 insertions(+), 62 deletions(-)
Changes the elida-kd35t133 panel to use multi style functions for
improved error handling.
Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
---
drivers/gpu/drm/panel/panel-elida-kd35t133.c | 107 ++++++++-----------
1 file changed, 45 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
index 00791ea81e90..62abda9559e7 100644
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@@ -50,55 +50,45 @@ 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,
+ 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34,
+ 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,
+ 0x02);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_SETIMAGEFUNCTION, 0x00);
+ mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_ADJUSTCONTROL3,
+ 0x51, 0x2c, 0x82);
+ if (!dsi_ctx->accum_err)
+ mipi_dsi_dcs_write(dsi_ctx->dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0);
}
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 +102,20 @@ 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;
}
@@ -135,25 +127,16 @@ 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);
+ mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+ if (dsi_ctx.accum_err)
goto disable_iovcc;
- }
-
- ret = mipi_dsi_dcs_set_display_on(dsi);
- if (ret < 0) {
- dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
- goto disable_iovcc;
- }
msleep(50);
@@ -163,7 +146,7 @@ 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 = {
--
2.46.0On Tue, Sep 17, 2024 at 12:47:10PM GMT, Tejas Vipin wrote:
> Changes the elida-kd35t133 panel to use multi style functions for
> improved error handling.
>
> Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
> ---
> drivers/gpu/drm/panel/panel-elida-kd35t133.c | 107 ++++++++-----------
> 1 file changed, 45 insertions(+), 62 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> index 00791ea81e90..62abda9559e7 100644
> --- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> +++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> @@ -50,55 +50,45 @@ 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,
> + 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34,
> + 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,
> + 0x02);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_SETIMAGEFUNCTION, 0x00);
> + mipi_dsi_dcs_write_seq_multi(dsi_ctx, KD35T133_CMD_ADJUSTCONTROL3,
> + 0x51, 0x2c, 0x82);
> + if (!dsi_ctx->accum_err)
> + mipi_dsi_dcs_write(dsi_ctx->dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0);
Please use mipi_dsi_dcs_write_buffer_multi() instead.
> }
>
> 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 +102,20 @@ 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;
> }
>
> @@ -135,25 +127,16 @@ 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);
> + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> + if (dsi_ctx.accum_err)
> goto disable_iovcc;
> - }
Move this after the last mipi_dsi_msleep(), merge with the error
handling.
> -
> - ret = mipi_dsi_dcs_set_display_on(dsi);
> - if (ret < 0) {
> - dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
> - goto disable_iovcc;
> - }
>
> msleep(50);
mipi_dsi_msleep()
>
> @@ -163,7 +146,7 @@ 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 = {
> --
> 2.46.0
>
--
With best wishes
Dmitry
On 9/20/24 9:59 PM, Dmitry Baryshkov wrote:
> On Tue, Sep 17, 2024 at 12:47:10PM GMT, Tejas Vipin wrote:
>> Changes the elida-kd35t133 panel to use multi style functions for
>> improved error handling.
>>
>> Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
>> ---
>> drivers/gpu/drm/panel/panel-elida-kd35t133.c | 107 ++++++++-----------
>> 1 file changed, 45 insertions(+), 62 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
>> index 00791ea81e90..62abda9559e7 100644
>> --- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
>> +++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
>> @@ -135,25 +127,16 @@ 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);
>> + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
>> + if (dsi_ctx.accum_err)
>> goto disable_iovcc;
>> - }
>
> Move this after the last mipi_dsi_msleep(), merge with the error
> handling.
>
>> -
>> - ret = mipi_dsi_dcs_set_display_on(dsi);
>> - if (ret < 0) {
>> - dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
>> - goto disable_iovcc;
>> - }
>>
>> msleep(50);
>
> mipi_dsi_msleep()
Is this necessary though? Converting this msleep to mipi_dsi_msleep and
moving the previous dsi_ctx.accum_err check to below this seems
redundant. If the check is placed above msleep, then we need to only
check for the error once. If its placed below mipi_dsi_msleep, we end up
checking for the error twice (once as written in the code, once in the
code generated by the macro) which is unnecessary.
--
Tejas Vipin
On Sun, Sep 22, 2024 at 11:49:49AM GMT, Tejas Vipin wrote:
>
>
> On 9/20/24 9:59 PM, Dmitry Baryshkov wrote:
> > On Tue, Sep 17, 2024 at 12:47:10PM GMT, Tejas Vipin wrote:
> >> Changes the elida-kd35t133 panel to use multi style functions for
> >> improved error handling.
> >>
> >> Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
> >> ---
> >> drivers/gpu/drm/panel/panel-elida-kd35t133.c | 107 ++++++++-----------
> >> 1 file changed, 45 insertions(+), 62 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> >> index 00791ea81e90..62abda9559e7 100644
> >> --- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> >> +++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
> >> @@ -135,25 +127,16 @@ 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);
> >> + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> >> + if (dsi_ctx.accum_err)
> >> goto disable_iovcc;
> >> - }
> >
> > Move this after the last mipi_dsi_msleep(), merge with the error
> > handling.
> >
> >> -
> >> - ret = mipi_dsi_dcs_set_display_on(dsi);
> >> - if (ret < 0) {
> >> - dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
> >> - goto disable_iovcc;
> >> - }
> >>
> >> msleep(50);
> >
> > mipi_dsi_msleep()
>
> Is this necessary though? Converting this msleep to mipi_dsi_msleep and
> moving the previous dsi_ctx.accum_err check to below this seems
> redundant. If the check is placed above msleep, then we need to only
> check for the error once. If its placed below mipi_dsi_msleep, we end up
> checking for the error twice (once as written in the code, once in the
> code generated by the macro) which is unnecessary.
Yes, uniformity. And the compiler will most likely optimize things away.
>
> --
> Tejas Vipin
--
With best wishes
Dmitry
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