Add dedicated helper to convert from XRGB8888 to ARGB2101010. Sets
all alpha bits to make pixels fully opaque.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/drm_format_helper.c | 58 ++++++++++++++++-
.../gpu/drm/tests/drm_format_helper_test.c | 63 +++++++++++++++++++
include/drm/drm_format_helper.h | 3 +
3 files changed, 122 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 9bcb08cf56b5..e562a3cefb89 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -603,6 +603,59 @@ void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *d
}
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_xrgb8888_to_argb2101010 - Convert XRGB8888 to ARGB2101010 clip buffer
+ * @dst: Array of ARGB2101010 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
+ *
+ * This function copies parts of a framebuffer to display memory and converts
+ * the color format during the process. 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 ARGB2101010 devices that don't support XRGB8888
+ * natively.
+ */
+void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
+ const struct iosys_map *src, const struct drm_framebuffer *fb,
+ const struct drm_rect *clip)
+{
+ static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = {
+ 4,
+ };
+
+ drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false,
+ drm_fb_xrgb8888_to_argb2101010_line);
+}
+EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb2101010);
+
static void drm_fb_xrgb8888_to_gray8_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
u8 *dbuf8 = dbuf;
@@ -694,8 +747,6 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
fb_format = DRM_FORMAT_XRGB8888;
if (fb_format == DRM_FORMAT_ARGB2101010)
fb_format = DRM_FORMAT_XRGB2101010;
- if (dst_format == DRM_FORMAT_ARGB2101010)
- dst_format = DRM_FORMAT_XRGB2101010;
if (fb_format == dst_format) {
drm_fb_memcpy(dst, dst_pitch, src, fb, clip);
@@ -719,6 +770,9 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
} else if (dst_format == DRM_FORMAT_XRGB2101010) {
drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip);
return 0;
+ } else if (dst_format == DRM_FORMAT_ARGB2101010) {
+ drm_fb_xrgb8888_to_argb2101010(dst, dst_pitch, src, fb, clip);
+ return 0;
} else if (dst_format == DRM_FORMAT_BGRX8888) {
drm_fb_swab(dst, dst_pitch, src, fb, clip, false);
return 0;
diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
index 189483ef98ea..b15dc7c1eb96 100644
--- a/drivers/gpu/drm/tests/drm_format_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
@@ -47,6 +47,11 @@ struct convert_to_xrgb2101010_result {
const u32 expected[TEST_BUF_SIZE];
};
+struct convert_to_argb2101010_result {
+ unsigned int dst_pitch;
+ const u32 expected[TEST_BUF_SIZE];
+};
+
struct convert_xrgb8888_case {
const char *name;
unsigned int pitch;
@@ -58,6 +63,7 @@ struct convert_xrgb8888_case {
struct convert_to_rgb888_result rgb888_result;
struct convert_to_argb8888_result argb8888_result;
struct convert_to_xrgb2101010_result xrgb2101010_result;
+ struct convert_to_argb2101010_result argb2101010_result;
};
static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
@@ -91,6 +97,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
.dst_pitch = 0,
.expected = { 0x3FF00000 },
},
+ .argb2101010_result = {
+ .dst_pitch = 0,
+ .expected = { 0xFFF00000 },
+ },
},
{
.name = "single_pixel_clip_rectangle",
@@ -125,6 +135,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
.dst_pitch = 0,
.expected = { 0x3FF00000 },
},
+ .argb2101010_result = {
+ .dst_pitch = 0,
+ .expected = { 0xFFF00000 },
+ },
},
{
/* Well known colors: White, black, red, green, blue, magenta,
@@ -201,6 +215,15 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
0x3FFFFC00, 0x000FFFFF,
},
},
+ .argb2101010_result = {
+ .dst_pitch = 0,
+ .expected = {
+ 0xFFFFFFFF, 0xC0000000,
+ 0xFFF00000, 0xC00FFC00,
+ 0xC00003FF, 0xFFF003FF,
+ 0xFFFFFC00, 0xC00FFFFF,
+ },
+ },
},
{
/* Randomly picked colors. Full buffer within the clip area. */
@@ -268,6 +291,14 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
0x2A20300C, 0x1B1705CD, 0x03844672, 0x00000000, 0x00000000,
},
},
+ .argb2101010_result = {
+ .dst_pitch = 20,
+ .expected = {
+ 0xC3844672, 0xC444D414, 0xEA20300C, 0x00000000, 0x00000000,
+ 0xDB1705CD, 0xC3844672, 0xC444D414, 0x00000000, 0x00000000,
+ 0xEA20300C, 0xDB1705CD, 0xC3844672, 0x00000000, 0x00000000,
+ },
+ },
},
};
@@ -504,6 +535,37 @@ static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test)
KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0);
}
+static void drm_test_fb_xrgb8888_to_argb2101010(struct kunit *test)
+{
+ const struct convert_xrgb8888_case *params = test->param_value;
+ const struct convert_to_argb2101010_result *result = ¶ms->argb2101010_result;
+ size_t dst_size;
+ __u32 *buf = NULL;
+ __u32 *xrgb8888 = NULL;
+ struct iosys_map dst, src;
+
+ struct drm_framebuffer fb = {
+ .format = drm_format_info(DRM_FORMAT_ARGB8888),
+ .pitches = { params->pitch, 0, 0 },
+ };
+
+ dst_size = conversion_buf_size(DRM_FORMAT_ARGB2101010,
+ result->dst_pitch, ¶ms->clip);
+ KUNIT_ASSERT_GT(test, dst_size, 0);
+
+ buf = kunit_kzalloc(test, dst_size, GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+ iosys_map_set_vaddr(&dst, buf);
+
+ xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888);
+ iosys_map_set_vaddr(&src, xrgb8888);
+
+ drm_fb_xrgb8888_to_argb2101010(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip);
+ buf = le32buf_to_cpu(test, buf, dst_size / sizeof(u32));
+ KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0);
+}
+
static struct kunit_case drm_format_helper_test_cases[] = {
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_gray8, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb332, convert_xrgb8888_gen_params),
@@ -511,6 +573,7 @@ static struct kunit_case drm_format_helper_test_cases[] = {
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb888, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_argb8888, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_xrgb2101010, convert_xrgb8888_gen_params),
+ KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_argb2101010, convert_xrgb8888_gen_params),
{}
};
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index 3ce8129dfe43..10b2d19cdb66 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -39,6 +39,9 @@ void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_
void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip);
+void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
+ const struct iosys_map *src, const struct drm_framebuffer *fb,
+ const struct drm_rect *clip);
void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip);
--
2.38.1
