Merge tag 'drm-misc-next-2025-03-06' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v6.15:

Cross-subsystem Changes:

base:
- component: Provide helper to query bound status

fbdev:
- fbtft: Remove access to page->index

Core Changes:

- Fix usage of logging macros in several places

gem:
- Add test function for imported dma-bufs and use it in core and helpers
- Avoid struct drm_gem_object.import_attach

tests:
- Fix lockdep warnings

ttm:
- Add helpers for TTM shrinker

Driver Changes:

adp:
- Add support for Apple Touch Bar displays on M1/M2

amdxdna:
- Fix interrupt handling

appletbdrm:
- Add support for Apple Touch Bar displays on x86

bridge:
- synopsys: Add HDMI audio support
- ti-sn65dsi83: Support negative DE polarity

ipu-v3:
- Remove unused code

nouveau:
- Avoid multiple -Wflex-array-member-not-at-end warnings

panthor:
- Fix CS_STATUS_ defines
- Improve locking

rockchip:
- analogix_dp: Add eDP support
- lvds: Improve logging
- vop2: Improve HDMI mode handling; Add support for RK3576
- Fix shutdown
- Support rk3562-mali

xe:
- Use TTM shrinker

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306130700.GA485504@linux.fritz.box

1 files changed, 54 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index ecb278b63e8c..01d3ab307ac3 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -702,6 +702,57 @@ void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pi
 }
 EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb888);
 
+static void drm_fb_xrgb8888_to_bgr888_line(void *dbuf, const void *sbuf, unsigned int pixels)
+{
+	u8 *dbuf8 = dbuf;
+	const __le32 *sbuf32 = sbuf;
+	unsigned int x;
+	u32 pix;
+
+	for (x = 0; x < pixels; x++) {
+		pix = le32_to_cpu(sbuf32[x]);
+		/* write red-green-blue to output in little endianness */
+		*dbuf8++ = (pix & 0x00ff0000) >> 16;
+		*dbuf8++ = (pix & 0x0000ff00) >> 8;
+		*dbuf8++ = (pix & 0x000000ff) >> 0;
+	}
+}
+
+/**
+ * drm_fb_xrgb8888_to_bgr888 - Convert XRGB8888 to BGR888 clip buffer
+ * @dst: Array of BGR888 destination buffers
+ * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines
+ *             within @dst; can be NULL if scanlines are stored next to each other.
+ * @src: Array of XRGB8888 source buffers
+ * @fb: DRM framebuffer
+ * @clip: Clip rectangle area to copy
+ * @state: Transform and conversion state
+ *
+ * This function copies parts of a framebuffer to display memory and converts the
+ * color format during the process. Destination and framebuffer formats must match. The
+ * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at
+ * least as many entries as there are planes in @fb's format. Each entry stores the
+ * value for the format's respective color plane at the same index.
+ *
+ * This function does not apply clipping on @dst (i.e. the destination is at the
+ * top-left corner).
+ *
+ * Drivers can use this function for BGR888 devices that don't natively
+ * support XRGB8888.
+ */
+void drm_fb_xrgb8888_to_bgr888(struct iosys_map *dst, const unsigned int *dst_pitch,
+			       const struct iosys_map *src, const struct drm_framebuffer *fb,
+			       const struct drm_rect *clip, struct drm_format_conv_state *state)
+{
+	static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = {
+		3,
+	};
+
+	drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state,
+		    drm_fb_xrgb8888_to_bgr888_line);
+}
+EXPORT_SYMBOL(drm_fb_xrgb8888_to_bgr888);
+
 static void drm_fb_xrgb8888_to_argb8888_line(void *dbuf, const void *sbuf, unsigned int pixels)
 {
 	__le32 *dbuf32 = dbuf;
@@ -1104,6 +1155,9 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
 		} else if (dst_format == DRM_FORMAT_RGB888) {
 			drm_fb_xrgb8888_to_rgb888(dst, dst_pitch, src, fb, clip, state);
 			return 0;
+		} else if (dst_format == DRM_FORMAT_BGR888) {
+			drm_fb_xrgb8888_to_bgr888(dst, dst_pitch, src, fb, clip, state);
+			return 0;
 		} else if (dst_format == DRM_FORMAT_ARGB8888) {
 			drm_fb_xrgb8888_to_argb8888(dst, dst_pitch, src, fb, clip, state);
 			return 0;