[PATCH 09/12] drm/format-helper: Rework XRGB8888-to-XRGB2101010 conversion

Thomas Zimmermann
Wed, 27 Jul 2022 11:33:09 -0000

Update XRGB8888-to-XRGB2101010 conversion to support struct iosys_map
and convert all users. Although these are single-plane color formats,
the new interface supports multi-plane formats for consistency with
drm_fb_blit().

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
 drivers/gpu/drm/drm_format_helper.c | 35 +++++++++++++++++------------
 include/drm/drm_format_helper.h     |  6 ++---
 2 files changed, 24 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/drm_format_helper.c
b/drivers/gpu/drm/drm_format_helper.c
index 155827eebe99..209f63b66c5f 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -504,26 +504,34 @@ static void drm_fb_xrgb8888_to_xrgb2101010_line(void
*dbuf, const void *sbuf, un
 }

 /**
- * drm_fb_xrgb8888_to_xrgb2101010_toio - Convert XRGB8888 to XRGB2101010 clip
- * buffer
- * @dst: XRGB2101010 destination buffer (iomem)
- * @dst_pitch: Number of bytes between two consecutive scanlines within dst
- * @vaddr: XRGB8888 source buffer
+ * drm_fb_xrgb8888_to_xrgb2101010 - Convert XRGB8888 to XRGB2101010 clip buffer
+ * @dst: Array of XRGB2101010 destination buffers
+ * @dst_pitch: Array of numbers of bytes between two consecutive scanlines
within dst
+ * @vmap: Array of XRGB8888 source buffers
  * @fb: DRM framebuffer
  * @clip: Clip rectangle area to copy
  *
  * Drivers can use this function for XRGB2101010 devices that don't
natively
  * support XRGB8888.
  */
-void drm_fb_xrgb8888_to_xrgb2101010_toio(void __iomem *dst,
-					 unsigned int dst_pitch, const void *vaddr,
-					 const struct drm_framebuffer *fb,
-					 const struct drm_rect *clip)
+void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int
*dst_pitch,
+				    const struct iosys_map *vmap, const struct drm_framebuffer *fb,
+				    const struct drm_rect *clip)
 {
-	drm_fb_xfrm_toio(dst, dst_pitch, 4, vaddr, fb, clip, false,
-			 drm_fb_xrgb8888_to_xrgb2101010_line);
+	static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
+		0, 0, 0, 0
+	};
+
+	if (!dst_pitch)
+		dst_pitch = default_dst_pitch;
+
+	if (dst[0].is_iomem)
+		drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 4, vmap[0].vaddr, fb,
+				 clip, false, drm_fb_xrgb8888_to_xrgb2101010_line);
+	else
+		drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 4, vmap[0].vaddr, fb,
+			    clip, false, drm_fb_xrgb8888_to_xrgb2101010_line);
 }
-EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio);

 static void drm_fb_xrgb8888_to_gray8_line(void *dbuf, const void *sbuf,
unsigned int pixels)
 {
@@ -628,8 +636,7 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int
*dst_pitch, uint32_t d
 		}
 	} else if (dst_format == DRM_FORMAT_XRGB2101010) {
 		if (fb_format == DRM_FORMAT_XRGB8888) {
-			drm_fb_xrgb8888_to_xrgb2101010_toio(dst[0].vaddr_iomem, dst_pitch[0],
-							    vmap[0].vaddr, fb, clip);
+			drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, vmap, fb, clip);
 			return 0;
 		}
 	}
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index 8c633dbab5d6..6807440ce29c 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -29,9 +29,9 @@ void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const
unsigned int *dst_pi
 void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int
*dst_pitch,
 			       const struct iosys_map *vmap, const struct drm_framebuffer *fb,
 			       const struct drm_rect *clip);
-void drm_fb_xrgb8888_to_xrgb2101010_toio(void __iomem *dst, unsigned int
dst_pitch,
-					 const void *vaddr, const struct drm_framebuffer *fb,
-					 const struct drm_rect *clip);
+void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int
*dst_pitch,
+				    const struct iosys_map *vmap, const struct drm_framebuffer *fb,
+				    const struct drm_rect *clip);
 void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void
*vaddr,
 			      const struct drm_framebuffer *fb, const struct drm_rect *clip);

--
2.37.1