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drm/format-helper: Add generic conversion to 32-bit formats

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Add drm_fb_xfrm_line_32to32() to implement conversion from 32-bit
pixels to 32-bit pixels. The pixel-conversion is specified by the
given callback parameter. Mark the helper as always_inline to avoid
overhead from function calls.

Then implement all existing line-conversion functions with the new
generic call and the respective pixel-conversion helper.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250328141709.217283-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-03-28 15:14:58 +01:00
parent c46d18f982
commit d55d0b066f
1 changed files with 19 additions and 65 deletions
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84
drivers/gpu/drm/drm_format_helper.c
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@@ -20,6 +20,8 @@
#include <drm/drm_print.h>
#include <drm/drm_rect.h>
#include "drm_format_internal.h"
/**
* drm_format_conv_state_init - Initialize format-conversion state
* @state: The state to initialize
@@ -244,6 +246,18 @@ static int drm_fb_xfrm(struct iosys_map *dst,
xfrm_line);
}
static __always_inline void drm_fb_xfrm_line_32to32(void *dbuf, const void *sbuf,
unsigned int pixels,
u32 (*xfrm_pixel)(u32))
{
__le32 *dbuf32 = dbuf;
const __le32 *sbuf32 = sbuf;
const __le32 *send32 = sbuf32 + pixels;
while (sbuf32 < send32)
*dbuf32++ = cpu_to_le32(xfrm_pixel(le32_to_cpup(sbuf32++)));
}
/**
* drm_fb_memcpy - Copy clip buffer
* @dst: Array of destination buffers
@@ -755,16 +769,7 @@ 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;
const __le32 *sbuf32 = sbuf;
unsigned int x;
u32 pix;
for (x = 0; x < pixels; x++) {
pix = le32_to_cpu(sbuf32[x]);
pix |= GENMASK(31, 24); /* fill alpha bits */
dbuf32[x] = cpu_to_le32(pix);
}
drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_argb8888);
}
/**
@@ -804,19 +809,7 @@ EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb8888);
static void drm_fb_xrgb8888_to_abgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
__le32 *dbuf32 = dbuf;
const __le32 *sbuf32 = sbuf;
unsigned int x;
u32 pix;
for (x = 0; x < pixels; x++) {
pix = le32_to_cpu(sbuf32[x]);
pix = ((pix & 0x00ff0000) >> 16) << 0 |
((pix & 0x0000ff00) >> 8) << 8 |
((pix & 0x000000ff) >> 0) << 16 |
GENMASK(31, 24); /* fill alpha bits */
*dbuf32++ = cpu_to_le32(pix);
}
drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_abgr8888);
}
static void drm_fb_xrgb8888_to_abgr8888(struct iosys_map *dst, const unsigned int *dst_pitch,
@@ -835,19 +828,7 @@ static void drm_fb_xrgb8888_to_abgr8888(struct iosys_map *dst, const unsigned in
static void drm_fb_xrgb8888_to_xbgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
__le32 *dbuf32 = dbuf;
const __le32 *sbuf32 = sbuf;
unsigned int x;
u32 pix;
for (x = 0; x < pixels; x++) {
pix = le32_to_cpu(sbuf32[x]);
pix = ((pix & 0x00ff0000) >> 16) << 0 |
((pix & 0x0000ff00) >> 8) << 8 |
((pix & 0x000000ff) >> 0) << 16 |
((pix & 0xff000000) >> 24) << 24;
*dbuf32++ = cpu_to_le32(pix);
}
drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_xbgr8888);
}
static void drm_fb_xrgb8888_to_xbgr8888(struct iosys_map *dst, const unsigned int *dst_pitch,
@@ -866,20 +847,7 @@ static void drm_fb_xrgb8888_to_xbgr8888(struct iosys_map *dst, const unsigned in
static void drm_fb_xrgb8888_to_xrgb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
__le32 *dbuf32 = dbuf;
const __le32 *sbuf32 = sbuf;
unsigned int x;
u32 val32;
u32 pix;
for (x = 0; x < pixels; x++) {
pix = le32_to_cpu(sbuf32[x]);
val32 = ((pix & 0x000000FF) << 2) |
((pix & 0x0000FF00) << 4) |
((pix & 0x00FF0000) << 6);
pix = val32 | ((val32 >> 8) & 0x00300C03);
*dbuf32++ = cpu_to_le32(pix);
}
drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_xrgb2101010);
}
/**
@@ -920,21 +888,7 @@ EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010);
static void drm_fb_xrgb8888_to_argb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
__le32 *dbuf32 = dbuf;
const __le32 *sbuf32 = sbuf;
unsigned int x;
u32 val32;
u32 pix;
for (x = 0; x < pixels; x++) {
pix = le32_to_cpu(sbuf32[x]);
val32 = ((pix & 0x000000ff) << 2) |
((pix & 0x0000ff00) << 4) |
((pix & 0x00ff0000) << 6);
pix = GENMASK(31, 30) | /* set alpha bits */
val32 | ((val32 >> 8) & 0x00300c03);
*dbuf32++ = cpu_to_le32(pix);
}
drm_fb_xfrm_line_32to32(dbuf, sbuf, pixels, drm_pixel_xrgb8888_to_argb2101010);
}
/**