linux-kernel - [PATCH v7 4/8] drm/vkms: Add support for RGB565 formats

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20250703-b4-new-color-formats-v7-4-15fd8fd2e15c@bootlin.com>
Date: Thu, 03 Jul 2025 09:57:00 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Melissa Wen <melissa.srw@...il.com>, 
 Maíra Canal <mairacanal@...eup.net>, 
 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, 
 Louis Chauvet <louis.chauvet@...tlin.com>, 
 Maíra Canal <mcanal@...lia.com>
Subject: [PATCH v7 4/8] drm/vkms: Add support for RGB565 formats

The format RGB565 was already supported. Add the support for:
- BGR565

Reviewed-by: Maíra Canal <mcanal@...lia.com>
Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
 drivers/gpu/drm/vkms/vkms_formats.c | 13 +++++++++++++
 drivers/gpu/drm/vkms/vkms_plane.c   |  1 +
 2 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index c37d1aae6eac..544bb6795805 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -259,6 +259,16 @@ static struct pixel_argb_u16 argb_u16_from_grayu16(u16 gray)
 	return argb_u16_from_u16161616(0xFFFF, gray, gray, gray);
 }
 
+static struct pixel_argb_u16 argb_u16_from_BGR565(const __le16 *pixel)
+{
+	struct pixel_argb_u16 out_pixel;
+
+	out_pixel = argb_u16_from_RGB565(pixel);
+	swap(out_pixel.r, out_pixel.b);
+
+	return out_pixel;
+}
+
 VISIBLE_IF_KUNIT struct pixel_argb_u16 argb_u16_from_yuv888(u8 y, u8 channel_1, u8 channel_2,
 							    const struct conversion_matrix *matrix)
 {
@@ -451,6 +461,7 @@ READ_LINE_le16161616(XRGB16161616_read_line, px, cpu_to_le16(0xFFFF), px[2], px[
 READ_LINE_le16161616(XBGR16161616_read_line, px, cpu_to_le16(0xFFFF), px[0], px[1], px[2])
 
 READ_LINE(RGB565_read_line, px, __le16, argb_u16_from_RGB565, px)
+READ_LINE(BGR565_read_line, px, __le16, argb_u16_from_BGR565, px)
 
 READ_LINE(R8_read_line, px, u8, argb_u16_from_gray8, *px)
 
@@ -675,6 +686,8 @@ pixel_read_line_t get_pixel_read_line_function(u32 format)
 		return &XBGR16161616_read_line;
 	case DRM_FORMAT_RGB565:
 		return &RGB565_read_line;
+	case DRM_FORMAT_BGR565:
+		return &BGR565_read_line;
 	case DRM_FORMAT_NV12:
 	case DRM_FORMAT_NV16:
 	case DRM_FORMAT_NV24:
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index d4c51b4486f7..6e7597ab935d 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -24,6 +24,7 @@ static const u32 vkms_formats[] = {
 	DRM_FORMAT_ARGB16161616,
 	DRM_FORMAT_ABGR16161616,
 	DRM_FORMAT_RGB565,
+	DRM_FORMAT_BGR565,
 	DRM_FORMAT_NV12,
 	DRM_FORMAT_NV16,
 	DRM_FORMAT_NV24,

-- 
2.49.0