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@xxxxxxxxx>
>> ---
>> 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
