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drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb888() 

Extend the existing test cases to test the conversion from XRGB8888 to
RGB888.

Tested-by: Maíra Canal <mairacanal@riseup.net>
Reviewed-by: David Gow <davidgow@google.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220926080837.65734-2-jose.exposito89@gmail.com
This commit is contained in:
José Expósito 2022-09-26 10:08:35 +02:00
parent 2f24fe8c54
commit f3f716ae5d
1 changed files with 65 additions and 0 deletions
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65
drivers/gpu/drm/tests/drm_format_helper_test.c
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@ -27,6 +27,11 @@ struct convert_to_rgb565_result {
const u16 expected_swab[TEST_BUF_SIZE];
};
struct convert_to_rgb888_result {
unsigned int dst_pitch;
const u8 expected[TEST_BUF_SIZE];
};
struct convert_xrgb8888_case {
const char *name;
unsigned int pitch;
@ -34,6 +39,7 @@ struct convert_xrgb8888_case {
const u32 xrgb8888[TEST_BUF_SIZE];
struct convert_to_rgb332_result rgb332_result;
struct convert_to_rgb565_result rgb565_result;
struct convert_to_rgb888_result rgb888_result;
};
static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
@ -51,6 +57,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
.expected = { 0xF800 },
.expected_swab = { 0x00F8 },
},
.rgb888_result = {
.dst_pitch = 0,
.expected = { 0x00, 0x00, 0xFF },
},
},
{
.name = "single_pixel_clip_rectangle",
@ -69,6 +79,10 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
.expected = { 0xF800 },
.expected_swab = { 0x00F8 },
},
.rgb888_result = {
.dst_pitch = 0,
.expected = { 0x00, 0x00, 0xFF },
},
},
{
/* Well known colors: White, black, red, green, blue, magenta,
@ -109,6 +123,15 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
0xE0FF, 0xFF07,
},
},
.rgb888_result = {
.dst_pitch = 0,
.expected = {
0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00,
0xFF, 0x00, 0x00, 0xFF, 0x00, 0xFF,
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
},
},
},
{
/* Randomly picked colors. Full buffer within the clip area. */
@ -141,6 +164,17 @@ static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
0x00A8, 0x8E6B, 0x330A, 0x0000, 0x0000,
},
},
.rgb888_result = {
.dst_pitch = 15,
.expected = {
0x9C, 0x44, 0x0E, 0x05, 0x4D, 0x11, 0x03, 0x03, 0xA8,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x73, 0x70, 0x6C, 0x9C, 0x44, 0x0E, 0x05, 0x4D, 0x11,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x03, 0x03, 0xA8, 0x73, 0x70, 0x6C, 0x9C, 0x44, 0x0E,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
},
},
};
@ -255,9 +289,40 @@ static void drm_test_fb_xrgb8888_to_rgb565(struct kunit *test)
KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected_swab, dst_size), 0);
}
static void drm_test_fb_xrgb8888_to_rgb888(struct kunit *test)
{
const struct convert_xrgb8888_case *params = test->param_value;
const struct convert_to_rgb888_result *result = &params->rgb888_result;
size_t dst_size;
__u8 *buf = NULL;
__u32 *xrgb8888 = NULL;
struct iosys_map dst, src;
struct drm_framebuffer fb = {
.format = drm_format_info(DRM_FORMAT_XRGB8888),
.pitches = { params->pitch, 0, 0 },
};
dst_size = conversion_buf_size(DRM_FORMAT_RGB888, result->dst_pitch,
&params->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_rgb888(&dst, &result->dst_pitch, &src, &fb, &params->clip);
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_rgb332, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb565, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb888, convert_xrgb8888_gen_params),
{}
};