On Mon, Sep 23, 2024 at 05:22:11PM GMT, zhaoxiong lv wrote: > On Mon, Sep 16, 2024 at 1:11 PM Dmitry Baryshkov > <dmitry.baryshkov@xxxxxxxxxx> wrote: > > > > On Sun, 15 Sept 2024 at 10:10, Zhaoxiong Lv > > <lvzhaoxiong@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > > > > In order to meet the timing, remove the delay between "backlight off" > > > and "display off" > > > > > > Removing variables: display_off_to_enter_sleep_delay_ms > > > > This is not enough. If this is a fix, then describe why the original > > commit is incorrect, provide necessary explanation, details, etc. > > Otherwise it looks as if you are removing the delay that was necessary > > for other panels > > > > Also if this is a fix, it should be properly notated with the Fixes > > tag, maybe cc:stable, etc. > > > > In its current state: NAK. > > hi Dmitry > > Our machine encountered an issue where, after entering S3 in the black > screen state, there is a probability that the screen remains black > after waking up. It seems that the DRM runtime resume has not yet > completed, but the system has already started the suspend process. > After reducing the delay for disable, this issue no longer occurs, > Therefore, under the premise of meeting the timing requirements, we > removed the delay between "backlight off" and "display off". > > Previously, "backlight_off_to_display_off_delay_ms" was added between > "backlight off" and "display off" to prevent "display off" from being > executed when the backlight is not fully powered off, which may cause > a white screen. However, we removed this > "backlight_off_to_display_off_delay_ms" and found that this situation > did not occur. Therefore, in order to solve the problem mentioned > above, we removed this delay. This should go to the commit message, rewritten to use imperative language, with the appropriate Fixes tags. > > This is the timing specification for the two panels: > 1. Kingdisplay panel timing spec: > https://github.com/KD54183/-JD9365DA_Power-On-Off-Sequence_V0120240923 > 2. LMFBX101117480 timing spec: https://github.com/chiohsin-lo/TDY-JD_LIB > > thanks > > > > > > > > > Signed-off-by: Zhaoxiong Lv <lvzhaoxiong@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> > > > --- > > > drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c | 6 ------ > > > 1 file changed, 6 deletions(-) > > > > > > diff --git a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c > > > index 44897e5218a6..2f8af86bc2a0 100644 > > > --- a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c > > > +++ b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c > > > @@ -31,7 +31,6 @@ struct jadard_panel_desc { > > > bool reset_before_power_off_vcioo; > > > unsigned int vcioo_to_lp11_delay_ms; > > > unsigned int lp11_to_reset_delay_ms; > > > - unsigned int backlight_off_to_display_off_delay_ms; > > > unsigned int display_off_to_enter_sleep_delay_ms; > > > unsigned int enter_sleep_to_reset_down_delay_ms; > > > }; > > > @@ -69,9 +68,6 @@ static int jadard_disable(struct drm_panel *panel) > > > struct jadard *jadard = panel_to_jadard(panel); > > > struct mipi_dsi_multi_context dsi_ctx = { .dsi = jadard->dsi }; > > > > > > - if (jadard->desc->backlight_off_to_display_off_delay_ms) > > > - mipi_dsi_msleep(&dsi_ctx, jadard->desc->backlight_off_to_display_off_delay_ms); > > > - > > > mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); > > > > > > if (jadard->desc->display_off_to_enter_sleep_delay_ms) > > > @@ -858,7 +854,6 @@ static const struct jadard_panel_desc kingdisplay_kd101ne3_40ti_desc = { > > > .reset_before_power_off_vcioo = true, > > > .vcioo_to_lp11_delay_ms = 5, > > > .lp11_to_reset_delay_ms = 10, > > > - .backlight_off_to_display_off_delay_ms = 100, > > > .display_off_to_enter_sleep_delay_ms = 50, > > > .enter_sleep_to_reset_down_delay_ms = 100, > > > }; > > > @@ -1109,7 +1104,6 @@ static const struct jadard_panel_desc melfas_lmfbx101117480_desc = { > > > .reset_before_power_off_vcioo = true, > > > .vcioo_to_lp11_delay_ms = 5, > > > .lp11_to_reset_delay_ms = 10, > > > - .backlight_off_to_display_off_delay_ms = 100, > > > .display_off_to_enter_sleep_delay_ms = 50, > > > .enter_sleep_to_reset_down_delay_ms = 100, > > > }; > > > -- > > > 2.17.1 > > > > > > > > > -- > > With best wishes > > Dmitry -- With best wishes Dmitry
