summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/drm_format_helper.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/drm_format_helper.c')
-rw-r--r--drivers/gpu/drm/drm_format_helper.c234
1 files changed, 116 insertions, 118 deletions
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 00d716f14173..a18da35145b7 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -10,23 +10,17 @@
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/io.h>
#include <drm/drm_format_helper.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_rect.h>
-static void drm_fb_memcpy_lines(void *dst, unsigned int dst_pitch,
- void *src, unsigned int src_pitch,
- unsigned int linelength, unsigned int lines)
+static unsigned int clip_offset(struct drm_rect *clip,
+ unsigned int pitch, unsigned int cpp)
{
- int line;
-
- for (line = 0; line < lines; line++) {
- memcpy(dst, src, linelength);
- src += src_pitch;
- dst += dst_pitch;
- }
+ return clip->y1 * pitch + clip->x1 * cpp;
}
/**
@@ -43,35 +37,44 @@ void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
struct drm_rect *clip)
{
unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0);
- unsigned int offset = (clip->y1 * fb->pitches[0]) + (clip->x1 * cpp);
size_t len = (clip->x2 - clip->x1) * cpp;
+ unsigned int y, lines = clip->y2 - clip->y1;
- drm_fb_memcpy_lines(dst, len,
- vaddr + offset, fb->pitches[0],
- len, clip->y2 - clip->y1);
+ vaddr += clip_offset(clip, fb->pitches[0], cpp);
+ for (y = 0; y < lines; y++) {
+ memcpy(dst, vaddr, len);
+ vaddr += fb->pitches[0];
+ dst += len;
+ }
}
EXPORT_SYMBOL(drm_fb_memcpy);
/**
* drm_fb_memcpy_dstclip - Copy clip buffer
- * @dst: Destination buffer
+ * @dst: Destination buffer (iomem)
* @vaddr: Source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
*
* This function applies clipping on dst, i.e. the destination is a
- * full framebuffer but only the clip rect content is copied over.
+ * full (iomem) framebuffer but only the clip rect content is copied over.
*/
-void drm_fb_memcpy_dstclip(void *dst, void *vaddr, struct drm_framebuffer *fb,
+void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr,
+ struct drm_framebuffer *fb,
struct drm_rect *clip)
{
unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0);
- unsigned int offset = (clip->y1 * fb->pitches[0]) + (clip->x1 * cpp);
+ unsigned int offset = clip_offset(clip, fb->pitches[0], cpp);
size_t len = (clip->x2 - clip->x1) * cpp;
+ unsigned int y, lines = clip->y2 - clip->y1;
- drm_fb_memcpy_lines(dst + offset, fb->pitches[0],
- vaddr + offset, fb->pitches[0],
- len, clip->y2 - clip->y1);
+ vaddr += offset;
+ dst += offset;
+ for (y = 0; y < lines; y++) {
+ memcpy_toio(dst, vaddr, len);
+ vaddr += fb->pitches[0];
+ dst += fb->pitches[0];
+ }
}
EXPORT_SYMBOL(drm_fb_memcpy_dstclip);
@@ -110,42 +113,22 @@ void drm_fb_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb,
}
EXPORT_SYMBOL(drm_fb_swab16);
-static void drm_fb_xrgb8888_to_rgb565_lines(void *dst, unsigned int dst_pitch,
- void *src, unsigned int src_pitch,
- unsigned int src_linelength,
- unsigned int lines,
- bool swap)
+static void drm_fb_xrgb8888_to_rgb565_line(u16 *dbuf, u32 *sbuf,
+ unsigned int pixels,
+ bool swab)
{
- unsigned int linepixels = src_linelength / sizeof(u32);
- unsigned int x, y;
- u32 *sbuf;
- u16 *dbuf, val16;
-
- /*
- * The cma memory is write-combined so reads are uncached.
- * Speed up by fetching one line at a time.
- */
- 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++) {
- val16 = ((sbuf[x] & 0x00F80000) >> 8) |
- ((sbuf[x] & 0x0000FC00) >> 5) |
- ((sbuf[x] & 0x000000F8) >> 3);
- if (swap)
- *dbuf++ = swab16(val16);
- else
- *dbuf++ = val16;
- }
- src += src_pitch;
- dst += dst_pitch;
+ unsigned int x;
+ u16 val16;
+
+ for (x = 0; x < pixels; x++) {
+ val16 = ((sbuf[x] & 0x00F80000) >> 8) |
+ ((sbuf[x] & 0x0000FC00) >> 5) |
+ ((sbuf[x] & 0x000000F8) >> 3);
+ if (swab)
+ dbuf[x] = swab16(val16);
+ else
+ dbuf[x] = val16;
}
-
- kfree(sbuf);
}
/**
@@ -154,7 +137,7 @@ static void drm_fb_xrgb8888_to_rgb565_lines(void *dst, unsigned int dst_pitch,
* @vaddr: XRGB8888 source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
- * @swap: Swap bytes
+ * @swab: Swap bytes
*
* Drivers can use this function for RGB565 devices that don't natively
* support XRGB8888.
@@ -164,109 +147,124 @@ static void drm_fb_xrgb8888_to_rgb565_lines(void *dst, unsigned int dst_pitch,
*/
void drm_fb_xrgb8888_to_rgb565(void *dst, void *vaddr,
struct drm_framebuffer *fb,
- struct drm_rect *clip, bool swap)
+ struct drm_rect *clip, bool swab)
{
- unsigned int src_offset = (clip->y1 * fb->pitches[0])
- + (clip->x1 * sizeof(u32));
- size_t src_len = (clip->x2 - clip->x1) * sizeof(u32);
- size_t dst_len = (clip->x2 - clip->x1) * sizeof(u16);
-
- drm_fb_xrgb8888_to_rgb565_lines(dst, dst_len,
- vaddr + src_offset, fb->pitches[0],
- src_len, clip->y2 - clip->y1,
- swap);
+ size_t linepixels = clip->x2 - clip->x1;
+ size_t src_len = linepixels * sizeof(u32);
+ size_t dst_len = linepixels * sizeof(u16);
+ unsigned y, lines = clip->y2 - clip->y1;
+ void *sbuf;
+
+ /*
+ * The cma memory is write-combined so reads are uncached.
+ * Speed up by fetching one line at a time.
+ */
+ sbuf = kmalloc(src_len, GFP_KERNEL);
+ if (!sbuf)
+ return;
+
+ vaddr += clip_offset(clip, fb->pitches[0], sizeof(u32));
+ for (y = 0; y < lines; y++) {
+ memcpy(sbuf, vaddr, src_len);
+ drm_fb_xrgb8888_to_rgb565_line(dst, sbuf, linepixels, swab);
+ vaddr += fb->pitches[0];
+ dst += dst_len;
+ }
+
+ kfree(sbuf);
}
EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565);
/**
* drm_fb_xrgb8888_to_rgb565_dstclip - Convert XRGB8888 to RGB565 clip buffer
- * @dst: RGB565 destination buffer
+ * @dst: RGB565 destination buffer (iomem)
* @dst_pitch: destination buffer pitch
* @vaddr: XRGB8888 source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
- * @swap: Swap bytes
+ * @swab: Swap bytes
*
* Drivers can use this function for RGB565 devices that don't natively
* support XRGB8888.
*
* This function applies clipping on dst, i.e. the destination is a
- * full framebuffer but only the clip rect content is copied over.
+ * full (iomem) framebuffer but only the clip rect content is copied over.
*/
-void drm_fb_xrgb8888_to_rgb565_dstclip(void *dst, unsigned int dst_pitch,
+void drm_fb_xrgb8888_to_rgb565_dstclip(void __iomem *dst, unsigned int dst_pitch,
void *vaddr, struct drm_framebuffer *fb,
- struct drm_rect *clip, bool swap)
-{
- unsigned int src_offset = (clip->y1 * fb->pitches[0])
- + (clip->x1 * sizeof(u32));
- unsigned int dst_offset = (clip->y1 * dst_pitch)
- + (clip->x1 * sizeof(u16));
- size_t src_len = (clip->x2 - clip->x1) * sizeof(u32);
-
- drm_fb_xrgb8888_to_rgb565_lines(dst + dst_offset, dst_pitch,
- vaddr + src_offset, fb->pitches[0],
- src_len, clip->y2 - clip->y1,
- swap);
-}
-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)
+ struct drm_rect *clip, bool swab)
{
- unsigned int linepixels = src_linelength / 3;
- unsigned int x, y;
- u32 *sbuf;
- u8 *dbuf;
+ size_t linepixels = clip->x2 - clip->x1;
+ size_t dst_len = linepixels * sizeof(u16);
+ unsigned y, lines = clip->y2 - clip->y1;
+ void *dbuf;
- sbuf = kmalloc(src_linelength, GFP_KERNEL);
- if (!sbuf)
+ dbuf = kmalloc(dst_len, GFP_KERNEL);
+ if (!dbuf)
return;
+ vaddr += clip_offset(clip, fb->pitches[0], sizeof(u32));
+ dst += clip_offset(clip, dst_pitch, sizeof(u16));
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;
+ drm_fb_xrgb8888_to_rgb565_line(dbuf, vaddr, linepixels, swab);
+ memcpy_toio(dst, dbuf, dst_len);
+ vaddr += fb->pitches[0];
+ dst += dst_len;
}
- kfree(sbuf);
+ kfree(dbuf);
+}
+EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565_dstclip);
+
+static void drm_fb_xrgb8888_to_rgb888_line(u8 *dbuf, u32 *sbuf,
+ unsigned int pixels)
+{
+ unsigned int x;
+
+ for (x = 0; x < pixels; x++) {
+ *dbuf++ = (sbuf[x] & 0x000000FF) >> 0;
+ *dbuf++ = (sbuf[x] & 0x0000FF00) >> 8;
+ *dbuf++ = (sbuf[x] & 0x00FF0000) >> 16;
+ }
}
/**
* drm_fb_xrgb8888_to_rgb888_dstclip - Convert XRGB8888 to RGB888 clip buffer
- * @dst: RGB565 destination buffer
+ * @dst: RGB565 destination buffer (iomem)
* @dst_pitch: destination buffer pitch
* @vaddr: XRGB8888 source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
- * @dstclip: Clip destination too.
*
* Drivers can use this function for RGB888 devices that don't natively
* support XRGB8888.
*
* This function applies clipping on dst, i.e. the destination is a
- * full framebuffer but only the clip rect content is copied over.
+ * full (iomem) framebuffer but only the clip rect content is copied over.
*/
-void drm_fb_xrgb8888_to_rgb888_dstclip(void *dst, unsigned int dst_pitch,
+void drm_fb_xrgb8888_to_rgb888_dstclip(void __iomem *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);
-
- drm_fb_xrgb8888_to_rgb888_lines(dst + dst_offset, dst_pitch,
- vaddr + src_offset, fb->pitches[0],
- src_len, clip->y2 - clip->y1);
+ size_t linepixels = clip->x2 - clip->x1;
+ size_t dst_len = linepixels * 3;
+ unsigned y, lines = clip->y2 - clip->y1;
+ void *dbuf;
+
+ dbuf = kmalloc(dst_len, GFP_KERNEL);
+ if (!dbuf)
+ return;
+
+ vaddr += clip_offset(clip, fb->pitches[0], sizeof(u32));
+ dst += clip_offset(clip, dst_pitch, sizeof(u16));
+ for (y = 0; y < lines; y++) {
+ drm_fb_xrgb8888_to_rgb888_line(dbuf, vaddr, linepixels);
+ memcpy_toio(dst, dbuf, dst_len);
+ vaddr += fb->pitches[0];
+ dst += dst_len;
+ }
+
+ kfree(dbuf);
}
EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb888_dstclip);
generated by cgit (git 2.34.1) at 2024-06-10 03:52:00 +0000