linux-kernel - Re: [PATCH v4 4/7] drm/bridge: use atomic enable/disable callbacks for panel bridge

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Date:   Tue, 5 Jul 2022 22:06:02 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, swboyd@...omium.org,
        quic_kalyant@...cinc.com, quic_khsieh@...cinc.com,
        quic_vproddut@...cinc.com, bjorn.andersson@...aro.org,
        quic_aravindh@...cinc.com, quic_abhinavk@...cinc.com,
        quic_sbillaka@...cinc.com
Subject: Re: [PATCH v4 4/7] drm/bridge: use atomic enable/disable callbacks
 for panel bridge

On 05/07/2022 20:00, Vinod Polimera wrote:
> Use atomic variants for panel bridge callback functions such that
> certain states like self-refresh can be accessed as part of
> enable/disable sequence.
> 
> Signed-off-by: Sankeerth Billakanti <quic_sbillaka@...cinc.com>
> Signed-off-by: Vinod Polimera <quic_vpolimer@...cinc.com>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

> ---
>   drivers/gpu/drm/bridge/panel.c | 20 ++++++++++++--------
>   1 file changed, 12 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
> index 0ee563e..eeb9546 100644
> --- a/drivers/gpu/drm/bridge/panel.c
> +++ b/drivers/gpu/drm/bridge/panel.c
> @@ -108,28 +108,32 @@ static void panel_bridge_detach(struct drm_bridge *bridge)
>   		drm_connector_cleanup(connector);
>   }
>   
> -static void panel_bridge_pre_enable(struct drm_bridge *bridge)
> +static void panel_bridge_atomic_pre_enable(struct drm_bridge *bridge,
> +				struct drm_bridge_state *old_bridge_state)
>   {
>   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
>   
>   	drm_panel_prepare(panel_bridge->panel);
>   }
>   
> -static void panel_bridge_enable(struct drm_bridge *bridge)
> +static void panel_bridge_atomic_enable(struct drm_bridge *bridge,
> +				struct drm_bridge_state *old_bridge_state)
>   {
>   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
>   
>   	drm_panel_enable(panel_bridge->panel);
>   }
>   
> -static void panel_bridge_disable(struct drm_bridge *bridge)
> +static void panel_bridge_atomic_disable(struct drm_bridge *bridge,
> +				struct drm_bridge_state *old_bridge_state)
>   {
>   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
>   
>   	drm_panel_disable(panel_bridge->panel);
>   }
>   
> -static void panel_bridge_post_disable(struct drm_bridge *bridge)
> +static void panel_bridge_atomic_post_disable(struct drm_bridge *bridge,
> +				struct drm_bridge_state *old_bridge_state)
>   {
>   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
>   
> @@ -158,10 +162,10 @@ static void panel_bridge_debugfs_init(struct drm_bridge *bridge,
>   static const struct drm_bridge_funcs panel_bridge_bridge_funcs = {
>   	.attach = panel_bridge_attach,
>   	.detach = panel_bridge_detach,
> -	.pre_enable = panel_bridge_pre_enable,
> -	.enable = panel_bridge_enable,
> -	.disable = panel_bridge_disable,
> -	.post_disable = panel_bridge_post_disable,
> +	.atomic_pre_enable = panel_bridge_atomic_pre_enable,
> +	.atomic_enable = panel_bridge_atomic_enable,
> +	.atomic_disable = panel_bridge_atomic_disable,
> +	.atomic_post_disable = panel_bridge_atomic_post_disable,
>   	.get_modes = panel_bridge_get_modes,
>   	.atomic_reset = drm_atomic_helper_bridge_reset,
>   	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,


-- 
With best wishes
Dmitry