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

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Message-ID: <e40cf0f1-278e-4e30-ae96-23e03517a12d@bootlin.com>
Date: Fri, 27 Jun 2025 15:21:38 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Maíra Canal <mcanal@...lia.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



Le 27/06/2025 à 15:17, Maíra Canal a écrit :
> 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.

Indeed, I will wait for review on 6/8 and 8/8, but I will definitely 
make those changes for apply/next revision!

Thanks a lot for your reviews!

Louis Chauvet

> 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,
>>
> 

-- 
Louis Chauvet, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com