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path: root/drivers/gpu/drm/tests/drm_format_helper_test.c
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Diffstat (limited to 'drivers/gpu/drm/tests/drm_format_helper_test.c')
-rw-r--r--drivers/gpu/drm/tests/drm_format_helper_test.c463
1 files changed, 463 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
new file mode 100644
index 000000000..567c71f95
--- /dev/null
+++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
@@ -0,0 +1,463 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <kunit/test.h>
+
+#include <drm/drm_device.h>
+#include <drm/drm_file.h>
+#include <drm/drm_format_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_mode.h>
+#include <drm/drm_print.h>
+#include <drm/drm_rect.h>
+
+#include "../drm_crtc_internal.h"
+
+#define TEST_BUF_SIZE 50
+
+struct convert_to_gray8_result {
+ unsigned int dst_pitch;
+ const u8 expected[TEST_BUF_SIZE];
+};
+
+struct convert_to_rgb332_result {
+ unsigned int dst_pitch;
+ const u8 expected[TEST_BUF_SIZE];
+};
+
+struct convert_to_rgb565_result {
+ unsigned int dst_pitch;
+ const u16 expected[TEST_BUF_SIZE];
+ const u16 expected_swab[TEST_BUF_SIZE];
+};
+
+struct convert_to_rgb888_result {
+ unsigned int dst_pitch;
+ const u8 expected[TEST_BUF_SIZE];
+};
+
+struct convert_to_xrgb2101010_result {
+ unsigned int dst_pitch;
+ const u32 expected[TEST_BUF_SIZE];
+};
+
+struct convert_xrgb8888_case {
+ const char *name;
+ unsigned int pitch;
+ struct drm_rect clip;
+ const u32 xrgb8888[TEST_BUF_SIZE];
+ struct convert_to_gray8_result gray8_result;
+ struct convert_to_rgb332_result rgb332_result;
+ struct convert_to_rgb565_result rgb565_result;
+ struct convert_to_rgb888_result rgb888_result;
+ struct convert_to_xrgb2101010_result xrgb2101010_result;
+};
+
+static struct convert_xrgb8888_case convert_xrgb8888_cases[] = {
+ {
+ .name = "single_pixel_source_buffer",
+ .pitch = 1 * 4,
+ .clip = DRM_RECT_INIT(0, 0, 1, 1),
+ .xrgb8888 = { 0x01FF0000 },
+ .gray8_result = {
+ .dst_pitch = 0,
+ .expected = { 0x4C },
+ },
+ .rgb332_result = {
+ .dst_pitch = 0,
+ .expected = { 0xE0 },
+ },
+ .rgb565_result = {
+ .dst_pitch = 0,
+ .expected = { 0xF800 },
+ .expected_swab = { 0x00F8 },
+ },
+ .rgb888_result = {
+ .dst_pitch = 0,
+ .expected = { 0x00, 0x00, 0xFF },
+ },
+ .xrgb2101010_result = {
+ .dst_pitch = 0,
+ .expected = { 0x3FF00000 },
+ },
+ },
+ {
+ .name = "single_pixel_clip_rectangle",
+ .pitch = 2 * 4,
+ .clip = DRM_RECT_INIT(1, 1, 1, 1),
+ .xrgb8888 = {
+ 0x00000000, 0x00000000,
+ 0x00000000, 0x10FF0000,
+ },
+ .gray8_result = {
+ .dst_pitch = 0,
+ .expected = { 0x4C },
+ },
+ .rgb332_result = {
+ .dst_pitch = 0,
+ .expected = { 0xE0 },
+ },
+ .rgb565_result = {
+ .dst_pitch = 0,
+ .expected = { 0xF800 },
+ .expected_swab = { 0x00F8 },
+ },
+ .rgb888_result = {
+ .dst_pitch = 0,
+ .expected = { 0x00, 0x00, 0xFF },
+ },
+ .xrgb2101010_result = {
+ .dst_pitch = 0,
+ .expected = { 0x3FF00000 },
+ },
+ },
+ {
+ /* Well known colors: White, black, red, green, blue, magenta,
+ * yellow and cyan. Different values for the X in XRGB8888 to
+ * make sure it is ignored. Partial clip area.
+ */
+ .name = "well_known_colors",
+ .pitch = 4 * 4,
+ .clip = DRM_RECT_INIT(1, 1, 2, 4),
+ .xrgb8888 = {
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000000, 0x11FFFFFF, 0x22000000, 0x00000000,
+ 0x00000000, 0x33FF0000, 0x4400FF00, 0x00000000,
+ 0x00000000, 0x550000FF, 0x66FF00FF, 0x00000000,
+ 0x00000000, 0x77FFFF00, 0x8800FFFF, 0x00000000,
+ },
+ .gray8_result = {
+ .dst_pitch = 0,
+ .expected = {
+ 0xFF, 0x00,
+ 0x4C, 0x99,
+ 0x19, 0x66,
+ 0xE5, 0xB2,
+ },
+ },
+ .rgb332_result = {
+ .dst_pitch = 0,
+ .expected = {
+ 0xFF, 0x00,
+ 0xE0, 0x1C,
+ 0x03, 0xE3,
+ 0xFC, 0x1F,
+ },
+ },
+ .rgb565_result = {
+ .dst_pitch = 0,
+ .expected = {
+ 0xFFFF, 0x0000,
+ 0xF800, 0x07E0,
+ 0x001F, 0xF81F,
+ 0xFFE0, 0x07FF,
+ },
+ .expected_swab = {
+ 0xFFFF, 0x0000,
+ 0x00F8, 0xE007,
+ 0x1F00, 0x1FF8,
+ 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,
+ },
+ },
+ .xrgb2101010_result = {
+ .dst_pitch = 0,
+ .expected = {
+ 0x3FFFFFFF, 0x00000000,
+ 0x3FF00000, 0x000FFC00,
+ 0x000003FF, 0x3FF003FF,
+ 0x3FFFFC00, 0x000FFFFF,
+ },
+ },
+ },
+ {
+ /* Randomly picked colors. Full buffer within the clip area. */
+ .name = "destination_pitch",
+ .pitch = 3 * 4,
+ .clip = DRM_RECT_INIT(0, 0, 3, 3),
+ .xrgb8888 = {
+ 0xA10E449C, 0xB1114D05, 0xC1A80303,
+ 0xD16C7073, 0xA20E449C, 0xB2114D05,
+ 0xC2A80303, 0xD26C7073, 0xA30E449C,
+ },
+ .gray8_result = {
+ .dst_pitch = 5,
+ .expected = {
+ 0x3C, 0x33, 0x34, 0x00, 0x00,
+ 0x6F, 0x3C, 0x33, 0x00, 0x00,
+ 0x34, 0x6F, 0x3C, 0x00, 0x00,
+ },
+ },
+ .rgb332_result = {
+ .dst_pitch = 5,
+ .expected = {
+ 0x0A, 0x08, 0xA0, 0x00, 0x00,
+ 0x6D, 0x0A, 0x08, 0x00, 0x00,
+ 0xA0, 0x6D, 0x0A, 0x00, 0x00,
+ },
+ },
+ .rgb565_result = {
+ .dst_pitch = 10,
+ .expected = {
+ 0x0A33, 0x1260, 0xA800, 0x0000, 0x0000,
+ 0x6B8E, 0x0A33, 0x1260, 0x0000, 0x0000,
+ 0xA800, 0x6B8E, 0x0A33, 0x0000, 0x0000,
+ },
+ .expected_swab = {
+ 0x330A, 0x6012, 0x00A8, 0x0000, 0x0000,
+ 0x8E6B, 0x330A, 0x6012, 0x0000, 0x0000,
+ 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,
+ },
+ },
+ .xrgb2101010_result = {
+ .dst_pitch = 20,
+ .expected = {
+ 0x03844672, 0x0444D414, 0x2A20300C, 0x00000000, 0x00000000,
+ 0x1B1705CD, 0x03844672, 0x0444D414, 0x00000000, 0x00000000,
+ 0x2A20300C, 0x1B1705CD, 0x03844672, 0x00000000, 0x00000000,
+ },
+ },
+ },
+};
+
+/*
+ * conversion_buf_size - Return the destination buffer size required to convert
+ * between formats.
+ * @dst_format: destination buffer pixel format (DRM_FORMAT_*)
+ * @dst_pitch: Number of bytes between two consecutive scanlines within dst
+ * @clip: Clip rectangle area to convert
+ *
+ * Returns:
+ * The size of the destination buffer or negative value on error.
+ */
+static size_t conversion_buf_size(u32 dst_format, unsigned int dst_pitch,
+ const struct drm_rect *clip)
+{
+ const struct drm_format_info *dst_fi = drm_format_info(dst_format);
+
+ if (!dst_fi)
+ return -EINVAL;
+
+ if (!dst_pitch)
+ dst_pitch = drm_rect_width(clip) * dst_fi->cpp[0];
+
+ return dst_pitch * drm_rect_height(clip);
+}
+
+static u32 *le32buf_to_cpu(struct kunit *test, const u32 *buf, size_t buf_size)
+{
+ u32 *dst = NULL;
+ int n;
+
+ dst = kunit_kzalloc(test, sizeof(*dst) * buf_size, GFP_KERNEL);
+ if (!dst)
+ return NULL;
+
+ for (n = 0; n < buf_size; n++)
+ dst[n] = le32_to_cpu((__force __le32)buf[n]);
+
+ return dst;
+}
+
+static void convert_xrgb8888_case_desc(struct convert_xrgb8888_case *t,
+ char *desc)
+{
+ strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);
+}
+
+KUNIT_ARRAY_PARAM(convert_xrgb8888, convert_xrgb8888_cases,
+ convert_xrgb8888_case_desc);
+
+static void drm_test_fb_xrgb8888_to_gray8(struct kunit *test)
+{
+ const struct convert_xrgb8888_case *params = test->param_value;
+ const struct convert_to_gray8_result *result = &params->gray8_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_R8, 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_gray8(&dst, &result->dst_pitch, &src, &fb, &params->clip);
+ KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
+}
+
+static void drm_test_fb_xrgb8888_to_rgb332(struct kunit *test)
+{
+ const struct convert_xrgb8888_case *params = test->param_value;
+ const struct convert_to_rgb332_result *result = &params->rgb332_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_RGB332, 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_rgb332(&dst, &result->dst_pitch, &src, &fb, &params->clip);
+ KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
+}
+
+static void drm_test_fb_xrgb8888_to_rgb565(struct kunit *test)
+{
+ const struct convert_xrgb8888_case *params = test->param_value;
+ const struct convert_to_rgb565_result *result = &params->rgb565_result;
+ size_t dst_size;
+ __u16 *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_RGB565, 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_rgb565(&dst, &result->dst_pitch, &src, &fb, &params->clip, false);
+ KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
+
+ drm_fb_xrgb8888_to_rgb565(&dst, &result->dst_pitch, &src, &fb, &params->clip, true);
+ KUNIT_EXPECT_MEMEQ(test, buf, result->expected_swab, dst_size);
+}
+
+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_MEMEQ(test, buf, result->expected, dst_size);
+}
+
+static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test)
+{
+ const struct convert_xrgb8888_case *params = test->param_value;
+ const struct convert_to_xrgb2101010_result *result = &params->xrgb2101010_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_XRGB8888),
+ .pitches = { params->pitch, 0, 0 },
+ };
+
+ dst_size = conversion_buf_size(DRM_FORMAT_XRGB2101010,
+ 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_xrgb2101010(&dst, &result->dst_pitch, &src, &fb, &params->clip);
+ buf = le32buf_to_cpu(test, buf, dst_size / sizeof(u32));
+ KUNIT_EXPECT_MEMEQ(test, buf, result->expected, dst_size);
+}
+
+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),
+ 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),
+ KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_xrgb2101010, convert_xrgb8888_gen_params),
+ {}
+};
+
+static struct kunit_suite drm_format_helper_test_suite = {
+ .name = "drm_format_helper_test",
+ .test_cases = drm_format_helper_test_cases,
+};
+
+kunit_test_suite(drm_format_helper_test_suite);
+
+MODULE_DESCRIPTION("KUnit tests for the drm_format_helper APIs");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("José Expósito <jose.exposito89@gmail.com>");
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-05 00:03:23 +0000