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Subject[PATCH 3/4] drm: use convert_lines() in xrgb8888_to_rgb565 helpers.
Date
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/drm_format_helper.c | 66 +++++++++++++----------------
1 file changed, 29 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index b8d17cd0a9f8..01d9ea134618 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -78,6 +78,25 @@ static struct drm_format_convert convert_xrgb8888_to_rgb565_swap = {
.func = convert_xrgb8888_to_rgb565_swab_fn,
};

+static void convert_xrgb8888_to_rgb888_fn(void *dst, void *src, u32 pixels)
+{
+ u32 *sbuf = src;
+ u8 *dbuf = dst;
+ u32 x;
+
+ for (x = 0; x < pixels; x++) {
+ *dbuf++ = (sbuf[x] & 0x000000FF) >> 0;
+ *dbuf++ = (sbuf[x] & 0x0000FF00) >> 8;
+ *dbuf++ = (sbuf[x] & 0x00FF0000) >> 16;
+ }
+}
+
+static struct drm_format_convert convert_xrgb8888_to_rgb888 = {
+ .dst_cpp = 3,
+ .src_cpp = 4,
+ .func = convert_xrgb8888_to_rgb888_fn,
+};
+
static void convert_lines(void *dst, unsigned int dst_pitch,
void *src, unsigned int src_pitch,
unsigned int pixels,
@@ -259,35 +278,6 @@ void drm_fb_xrgb8888_to_rgb565_dstclip(void *dst, unsigned int dst_pitch,
}
EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565_dstclip);

-static void drm_fb_xrgb8888_to_rgb888_lines(void *dst, unsigned int dst_pitch,
- void *src, unsigned int src_pitch,
- unsigned int src_linelength,
- unsigned int lines)
-{
- unsigned int linepixels = src_linelength / 3;
- unsigned int x, y;
- u32 *sbuf;
- u8 *dbuf;
-
- sbuf = kmalloc(src_linelength, GFP_KERNEL);
- if (!sbuf)
- return;
-
- for (y = 0; y < lines; y++) {
- memcpy(sbuf, src, src_linelength);
- dbuf = dst;
- for (x = 0; x < linepixels; x++) {
- *dbuf++ = (sbuf[x] & 0x000000FF) >> 0;
- *dbuf++ = (sbuf[x] & 0x0000FF00) >> 8;
- *dbuf++ = (sbuf[x] & 0x00FF0000) >> 16;
- }
- src += src_pitch;
- dst += dst_pitch;
- }
-
- kfree(sbuf);
-}
-
/**
* drm_fb_xrgb8888_to_rgb888_dstclip - Convert XRGB8888 to RGB888 clip buffer
* @dst: RGB565 destination buffer
@@ -307,15 +297,17 @@ void drm_fb_xrgb8888_to_rgb888_dstclip(void *dst, unsigned int dst_pitch,
void *vaddr, struct drm_framebuffer *fb,
struct drm_rect *clip)
{
- unsigned int src_offset = (clip->y1 * fb->pitches[0])
- + (clip->x1 * sizeof(u32));
- unsigned int dst_offset = (clip->y1 * dst_pitch)
- + (clip->x1 * 3);
- size_t src_len = (clip->x2 - clip->x1) * sizeof(u32);
+ struct drm_format_convert *conv = &convert_xrgb8888_to_rgb888;
+ unsigned int src_offset =
+ clip_offset(clip, fb->pitches[0], conv->src_cpp);
+ unsigned int dst_offset =
+ clip_offset(clip, dst_pitch, conv->dst_cpp);
+ size_t pixels = (clip->x2 - clip->x1);
+ size_t lines = (clip->y2 - clip->y1);

- drm_fb_xrgb8888_to_rgb888_lines(dst + dst_offset, dst_pitch,
- vaddr + src_offset, fb->pitches[0],
- src_len, clip->y2 - clip->y1);
+ convert_lines(dst + dst_offset, dst_pitch,
+ vaddr + src_offset, fb->pitches[0],
+ pixels, lines, conv);
}
EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb888_dstclip);

--
2.18.1
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