linux-kernel - Re: [PATCH] drm/mxsfb: Make supported modifiers explicit

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Date:   Mon, 23 Mar 2020 16:51:05 +0100
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Guido Günther <agx@...xcpu.org>,
        Marek Vasut <marex@...x.de>, Stefan Agner <stefan@...er.ch>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/mxsfb: Make supported modifiers explicit

Am Montag, den 23.03.2020, 15:52 +0100 schrieb Guido Günther:
> In contrast to other display controllers on imx like DCSS and ipuv3
> lcdif/mxsfb does not support detiling e.g. vivante tiled layouts.
> Since mesa might assume otherwise make it explicit that only
> DRM_FORMAT_MOD_LINEAR is supported.
> 
> Signed-off-by: Guido Günther <agx@...xcpu.org>

Reviewed-by: Lucas Stach <l.stach@...gutronix.de>

> ---
>  drivers/gpu/drm/mxsfb/mxsfb_drv.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> index 762379530928..fc71e7a7a02e 100644
> --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> @@ -73,6 +73,11 @@ static const uint32_t mxsfb_formats[] = {
>  	DRM_FORMAT_RGB565
>  };
>  
> +static const uint64_t mxsfb_modifiers[] = {
> +	DRM_FORMAT_MOD_LINEAR,
> +	DRM_FORMAT_MOD_INVALID
> +};
> +
>  static struct mxsfb_drm_private *
>  drm_pipe_to_mxsfb_drm_private(struct drm_simple_display_pipe *pipe)
>  {
> @@ -334,8 +339,8 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
>  	}
>  
>  	ret = drm_simple_display_pipe_init(drm, &mxsfb->pipe, &mxsfb_funcs,
> -			mxsfb_formats, ARRAY_SIZE(mxsfb_formats), NULL,
> -			mxsfb->connector);
> +			mxsfb_formats, ARRAY_SIZE(mxsfb_formats),
> +			mxsfb_modifiers, mxsfb->connector);
>  	if (ret < 0) {
>  		dev_err(drm->dev, "Cannot setup simple display pipe\n");
>  		goto err_vblank;