linux-kernel - Re: [PATCH v5 06/10] drm/bridge: analogix-anx78xx: Use bridge->mode

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Message-ID: <fdf03599-9792-94c3-5f05-bb8458bb1cee@baylibre.com>
Date:   Tue, 30 May 2017 09:28:37 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Jose Abreu <Jose.Abreu@...opsys.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Daniel Vetter <daniel.vetter@...ll.ch>,
        Carlos Palminha <CARLOS.PALMINHA@...opsys.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH v5 06/10] drm/bridge: analogix-anx78xx: Use
 bridge->mode_valid() callback

On 05/25/2017 04:19 PM, Jose Abreu wrote:
> Now that we have a callback to check if bridge supports a given mode
> we can use it in Analogix bridge so that we restrict the number of
> probbed modes to the ones we can actually display.
> 
> Also, there is no need to use mode_fixup() callback as mode_valid()
> will handle the mode validation.
> 
> NOTE: Only compile tested.
> 
> Signed-off-by: Jose Abreu <joabreu@...opsys.com>
> Cc: Carlos Palminha <palminha@...opsys.com>
> Cc: Daniel Vetter <daniel.vetter@...ll.ch>
> Cc: Archit Taneja <architt@...eaurora.org>
> Cc: Andrzej Hajda <a.hajda@...sung.com>
> Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
> Cc: David Airlie <airlied@...ux.ie>
> ---
>  drivers/gpu/drm/bridge/analogix-anx78xx.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c
> index a2a8236..cf69a1c 100644
> --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c
> +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c
> @@ -1061,18 +1061,17 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge)
>  	return 0;
>  }
>  
> -static bool anx78xx_bridge_mode_fixup(struct drm_bridge *bridge,
> -				      const struct drm_display_mode *mode,
> -				      struct drm_display_mode *adjusted_mode)
> +enum drm_mode_status anx78xx_bridge_mode_valid(struct drm_bridge *bridge,
> +					       const struct drm_display_mode *mode)
>  {
>  	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
> -		return false;
> +		return MODE_NO_INTERLACE;
>  
>  	/* Max 1200p at 5.4 Ghz, one lane */
>  	if (mode->clock > 154000)
> -		return false;
> +		return MODE_CLOCK_HIGH;
>  
> -	return true;
> +	return MODE_OK;
>  }
>  
>  static void anx78xx_bridge_disable(struct drm_bridge *bridge)
> @@ -1129,7 +1128,7 @@ static void anx78xx_bridge_enable(struct drm_bridge *bridge)
>  
>  static const struct drm_bridge_funcs anx78xx_bridge_funcs = {
>  	.attach = anx78xx_bridge_attach,
> -	.mode_fixup = anx78xx_bridge_mode_fixup,
> +	.mode_valid = anx78xx_bridge_mode_valid,
>  	.disable = anx78xx_bridge_disable,
>  	.mode_set = anx78xx_bridge_mode_set,
>  	.enable = anx78xx_bridge_enable,
> 

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>