linux-kernel - Re: [PATCH 5/7] drm/vc4: dpi: Support BGR666 formats

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Date:   Sat, 15 Oct 2022 20:26:46 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     Maxime Ripard <mripard@...nel.org>, Eric Anholt <eric@...olt.net>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>, Rob Herring <robh@...nel.org>,
        Emma Anholt <emma@...olt.net>, dri-devel@...ts.freedesktop.org,
        Joerg Quinten <aBUGSworstnightmare@...il.com>,
        Chris Morgan <macromorgan@...mail.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/7] drm/vc4: dpi: Support BGR666 formats

Hi Maxime and Joerg,

Thank you for the patch.

On Thu, Oct 13, 2022 at 11:56:49AM +0200, Maxime Ripard wrote:
> From: Joerg Quinten <aBUGSworstnightmare@...il.com>
> 
> The VC4 DPI output can support multiple BGR666 variants, but they were
> never added to the driver. Let's add the the support for those formats.
> 
> Signed-off-by: Joerg Quinten <aBUGSworstnightmare@...il.com>
> Signed-off-by: Maxime Ripard <maxime@...no.tech>

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> ---
>  drivers/gpu/drm/vc4/vc4_dpi.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
> index 7da3dd1db50e..ecbe4cd87036 100644
> --- a/drivers/gpu/drm/vc4/vc4_dpi.c
> +++ b/drivers/gpu/drm/vc4/vc4_dpi.c
> @@ -170,10 +170,16 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
>  				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
>  						       DPI_ORDER);
>  				break;
> +			case MEDIA_BUS_FMT_BGR666_1X24_CPADHI:
> +				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
> +				fallthrough;
>  			case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
>  				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
>  						       DPI_FORMAT);
>  				break;
> +			case MEDIA_BUS_FMT_BGR666_1X18:
> +				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
> +				fallthrough;
>  			case MEDIA_BUS_FMT_RGB666_1X18:
>  				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
>  						       DPI_FORMAT);
> 

-- 
Regards,

Laurent Pinchart