On Thu, 25 Jul 2024, Zhaoxiong Lv <lvzhaoxi...@huaqin.corp-partner.google.com> 
wrote:
> Move the 11/29 command from enable() to init() function

OOC, what is the "11/29" command?

BR,
Jani.

>
> As mentioned in the patch:
> https://lore.kernel.org/all/20240624141926.5250-2-lvzhaoxi...@huaqin.corp-partner.google.com/
>
> Our DSI host has different modes in prepare() and enable()
> functions. prepare() is in LP mode and enable() is in HS mode.
> Since the 11/29 command must also be sent in LP mode,
> so we also move 11/29 command to the init() function.
>
> After moving the 11/29 command to the init() function,
> we no longer need additional delay judgment, so we delete
> variables "exit_sleep_to_display_on_delay_ms" and
> "display_on_delay_ms".
>
> Signed-off-by: Zhaoxiong Lv <lvzhaoxi...@huaqin.corp-partner.google.com>
> ---
>  .../gpu/drm/panel/panel-jadard-jd9365da-h3.c  | 59 ++++++++++---------
>  1 file changed, 32 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c 
> b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
> index 04d315d96bff..ce73e8cb1db5 100644
> --- a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
> +++ b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
> @@ -31,8 +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 exit_sleep_to_display_on_delay_ms;
> -     unsigned int display_on_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;
> @@ -66,26 +64,6 @@ static inline struct jadard *panel_to_jadard(struct 
> drm_panel *panel)
>       return container_of(panel, struct jadard, panel);
>  }
>  
> -static int jadard_enable(struct drm_panel *panel)
> -{
> -     struct jadard *jadard = panel_to_jadard(panel);
> -     struct mipi_dsi_multi_context dsi_ctx = { .dsi = jadard->dsi };
> -
> -     msleep(120);
> -
> -     mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> -
> -     if (jadard->desc->exit_sleep_to_display_on_delay_ms)
> -             mipi_dsi_msleep(&dsi_ctx, 
> jadard->desc->exit_sleep_to_display_on_delay_ms);
> -
> -     mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> -
> -     if (jadard->desc->display_on_delay_ms)
> -             mipi_dsi_msleep(&dsi_ctx, jadard->desc->display_on_delay_ms);
> -
> -     return dsi_ctx.accum_err;
> -}
> -
>  static int jadard_disable(struct drm_panel *panel)
>  {
>       struct jadard *jadard = panel_to_jadard(panel);
> @@ -202,7 +180,6 @@ static const struct drm_panel_funcs jadard_funcs = {
>       .disable = jadard_disable,
>       .unprepare = jadard_unprepare,
>       .prepare = jadard_prepare,
> -     .enable = jadard_enable,
>       .get_modes = jadard_get_modes,
>       .get_orientation = jadard_panel_get_orientation,
>  };
> @@ -382,6 +359,12 @@ static int radxa_display_8hd_ad002_init_cmds(struct 
> jadard *jadard)
>  
>       jd9365da_switch_page(&dsi_ctx, 0x00);
>  
> +     mipi_dsi_msleep(&dsi_ctx, 120);
> +
> +     mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> +
> +     mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> +
>       return dsi_ctx.accum_err;
>  };
>  
> @@ -608,6 +591,12 @@ static int cz101b4001_init_cmds(struct jadard *jadard)
>       mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xE6, 0x02);
>       mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xE7, 0x0C);
>  
> +     mipi_dsi_msleep(&dsi_ctx, 120);
> +
> +     mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> +
> +     mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> +
>       return dsi_ctx.accum_err;
>  };
>  
> @@ -831,6 +820,16 @@ static int kingdisplay_kd101ne3_init_cmds(struct jadard 
> *jadard)
>  
>       jd9365da_switch_page(&dsi_ctx, 0x00);
>  
> +     mipi_dsi_msleep(&dsi_ctx, 120);
> +
> +     mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> +
> +     mipi_dsi_msleep(&dsi_ctx, 120);
> +
> +     mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> +
> +     mipi_dsi_msleep(&dsi_ctx, 20);
> +
>       return dsi_ctx.accum_err;
>  };
>  
> @@ -859,8 +858,6 @@ 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,
> -     .exit_sleep_to_display_on_delay_ms = 120,
> -     .display_on_delay_ms = 20,
>       .backlight_off_to_display_off_delay_ms = 100,
>       .display_off_to_enter_sleep_delay_ms = 50,
>       .enter_sleep_to_reset_down_delay_ms = 100,
> @@ -1074,6 +1071,16 @@ static int melfas_lmfbx101117480_init_cmds(struct 
> jadard *jadard)
>       mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe6, 0x02);
>       mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe7, 0x06);
>  
> +     mipi_dsi_msleep(&dsi_ctx, 120);
> +
> +     mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> +
> +     mipi_dsi_msleep(&dsi_ctx, 120);
> +
> +     mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> +
> +     mipi_dsi_msleep(&dsi_ctx, 20);
> +
>       return dsi_ctx.accum_err;
>  };
>  
> @@ -1102,8 +1109,6 @@ 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,
> -     .exit_sleep_to_display_on_delay_ms = 120,
> -     .display_on_delay_ms = 20,
>       .backlight_off_to_display_off_delay_ms = 100,
>       .display_off_to_enter_sleep_delay_ms = 50,
>       .enter_sleep_to_reset_down_delay_ms = 100,

-- 
Jani Nikula, Intel

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