linux-kernel - Re: [PATCH v5 2/8] drm/vkms: Add support for ARGB8888 formats

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Message-ID: <0fc35309-f487-4aa2-b0df-c9b0e2b51fb7@igalia.com>
Date: Fri, 27 Jun 2025 10:17:14 -0300
From: Maíra Canal <mcanal@...lia.com>
To: Louis Chauvet <louis.chauvet@...tlin.com>,
 Melissa Wen <melissa.srw@...il.com>,
 Haneen Mohammed <hamohammed.sa@...il.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Rodrigo Siqueira <siqueira@...lia.com>,
 Simona Vetter <simona.vetter@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, arthurgrillo@...eup.net,
 linux-kernel@...r.kernel.org, jeremie.dautheribes@...tlin.com,
 miquel.raynal@...tlin.com, thomas.petazzoni@...tlin.com,
 seanpaul@...gle.com, nicolejadeyee@...gle.com
Subject: Re: [PATCH v5 2/8] drm/vkms: Add support for ARGB8888 formats

Hi Louis,

On 27/06/25 06:12, Louis Chauvet wrote:
> The formats XRGB8888 and ARGB8888 were already supported. Add the
> support for: - XBGR8888 - RGBX8888 - BGRX8888 - ABGR8888 - RGBA8888 -
> BGRA8888

Please, remove RGBX8888 and BGRX8888 from this list. Also, for
readability, it would be great if you add each format in one separate
line.

Apart from that,

Reviewed-by: Maíra Canal <mcanal@...lia.com>

Best Regards,
- Maíra

> 
> Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
> ---
>   drivers/gpu/drm/vkms/vkms_formats.c | 13 +++++++++++--
>   drivers/gpu/drm/vkms/vkms_plane.c   |  5 ++++-
>   2 files changed, 15 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
> index a9c624081dac..231b327e86b3 100644
> --- a/drivers/gpu/drm/vkms/vkms_formats.c
> +++ b/drivers/gpu/drm/vkms/vkms_formats.c
> @@ -432,9 +432,12 @@ static void R4_read_line(const struct vkms_plane_state *plane, int x_start,
>   
>   
>   READ_LINE_ARGB8888(XRGB8888_read_line, px, 0xFF, px[2], px[1], px[0])
> +READ_LINE_ARGB8888(XBGR8888_read_line, px, 0xFF, px[0], px[1], px[2])
>   
>   READ_LINE_ARGB8888(ARGB8888_read_line, px, px[3], px[2], px[1], px[0])
>   READ_LINE_ARGB8888(ABGR8888_read_line, px, px[3], px[0], px[1], px[2])
> +READ_LINE_ARGB8888(RGBA8888_read_line, px, px[0], px[3], px[2], px[1])
> +READ_LINE_ARGB8888(BGRA8888_read_line, px, px[0], px[1], px[2], px[3])
>   
>   READ_LINE_le16161616(ARGB16161616_read_line, px, px[3], px[2], px[1], px[0])
>   READ_LINE_le16161616(XRGB16161616_read_line, px, cpu_to_le16(0xFFFF), px[2], px[1], px[0])
> @@ -644,10 +647,16 @@ pixel_read_line_t get_pixel_read_line_function(u32 format)
>   	switch (format) {RGBA8888
>   	case DRM_FORMAT_ARGB8888:
>   		return &ARGB8888_read_line;
> -	case DRM_FORMAT_XRGB8888:
> -		return &XRGB8888_read_line;
>   	case DRM_FORMAT_ABGR8888:
>   		return &ABGR8888_read_line;
> +	case DRM_FORMAT_BGRA8888:
> +		return &BGRA8888_read_line;
> +	case DRM_FORMAT_RGBA8888:
> +		return &RGBA8888_read_line;
> +	case DRM_FORMAT_XRGB8888:
> +		return &XRGB8888_read_line;
> +	case DRM_FORMAT_XBGR8888:
> +		return &XBGR8888_read_line;
>   	case DRM_FORMAT_ARGB16161616:
>   		return &ARGB16161616_read_line;
>   	case DRM_FORMAT_XRGB16161616:
> diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
> index e3fdd161d0f0..01fed722808b 100644
> --- a/drivers/gpu/drm/vkms/vkms_plane.c
> +++ b/drivers/gpu/drm/vkms/vkms_plane.c
> @@ -14,8 +14,11 @@
>   
>   static const u32 vkms_formats[] = {
>   	DRM_FORMAT_ARGB8888,
> -	DRM_FORMAT_XRGB8888,
>   	DRM_FORMAT_ABGR8888,
> +	DRM_FORMAT_BGRA8888,
> +	DRM_FORMAT_RGBA8888,
> +	DRM_FORMAT_XRGB8888,
> +	DRM_FORMAT_XBGR8888,
>   	DRM_FORMAT_XRGB16161616,
>   	DRM_FORMAT_ARGB16161616,
>   	DRM_FORMAT_RGB565,
>