Insert parameterized test for the drm_fb_build_fourcc_list() to ensure
correctness and prevent future regressions.
Signed-off-by: Arthur Grillo <arthurgrillo@xxxxxxxxxx>
---
drivers/gpu/drm/tests/drm_format_helper_test.c | 144 +++++++++++++++++++++++++
1 file changed, 144 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
index 7f24da0b1e00..eca6b3415a42 100644
--- a/drivers/gpu/drm/tests/drm_format_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
@@ -3,11 +3,13 @@
#include <kunit/test.h>
#include <drm/drm_device.h>
+#include <drm/drm_drv.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_kunit_helpers.h>
#include <drm/drm_mode.h>
#include <drm/drm_print.h>
#include <drm/drm_rect.h>
@@ -1041,6 +1043,147 @@ static void drm_test_fb_clip_offset(struct kunit *test)
KUNIT_EXPECT_EQ(test, offset, params->expected_offset);
}
+struct fb_build_fourcc_list_case {
+ const char *name;
+ u32 native_fourccs[TEST_BUF_SIZE];
+ size_t native_fourccs_size;
+ u32 expected[TEST_BUF_SIZE];
+ size_t expected_fourccs_size;
+};
+
+static struct fb_build_fourcc_list_case fb_build_fourcc_list_cases[] = {
+ {
+ .name = "no native formats",
+ .native_fourccs = { },
+ .native_fourccs_size = 0,
+ .expected = { DRM_FORMAT_XRGB8888 },
+ .expected_fourccs_size = 1,
+ },
+ {
+ .name = "XRGB8888 as native format",
+ .native_fourccs = { DRM_FORMAT_XRGB8888 },
+ .native_fourccs_size = 1,
+ .expected = { DRM_FORMAT_XRGB8888 },
+ .expected_fourccs_size = 1,
+ },
+ {
+ .name = "remove duplicates",
+ .native_fourccs = {
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_XRGB8888,
+ },
+ .native_fourccs_size = 11,
+ .expected = {
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGB565,
+ },
+ .expected_fourccs_size = 3,
+ },
+ {
+ .name = "convert alpha formats",
+ .native_fourccs = {
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_ABGR1555,
+ DRM_FORMAT_RGBA5551,
+ DRM_FORMAT_BGRA5551,
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_ABGR8888,
+ DRM_FORMAT_RGBA8888,
+ DRM_FORMAT_BGRA8888,
+ DRM_FORMAT_ARGB2101010,
+ DRM_FORMAT_ABGR2101010,
+ DRM_FORMAT_RGBA1010102,
+ DRM_FORMAT_BGRA1010102,
+ },
+ .native_fourccs_size = 12,
+ .expected = {
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_XBGR1555,
+ DRM_FORMAT_RGBX5551,
+ DRM_FORMAT_BGRX5551,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_RGBX8888,
+ DRM_FORMAT_BGRX8888,
+ DRM_FORMAT_XRGB2101010,
+ DRM_FORMAT_XBGR2101010,
+ DRM_FORMAT_RGBX1010102,
+ DRM_FORMAT_BGRX1010102,
+ },
+ .expected_fourccs_size = 12,
+ },
+ {
+ .name = "random formats",
+ .native_fourccs = {
+ DRM_FORMAT_Y212,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_ABGR16161616F,
+ DRM_FORMAT_C8,
+ DRM_FORMAT_BGR888,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_RGBA5551,
+ DRM_FORMAT_BGR565_A8,
+ DRM_FORMAT_R10,
+ DRM_FORMAT_XYUV8888,
+ },
+ .native_fourccs_size = 10,
+ .expected = {
+ DRM_FORMAT_Y212,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_ABGR16161616F,
+ DRM_FORMAT_C8,
+ DRM_FORMAT_BGR888,
+ DRM_FORMAT_RGBX5551,
+ DRM_FORMAT_BGR565_A8,
+ DRM_FORMAT_R10,
+ DRM_FORMAT_XYUV8888,
+ DRM_FORMAT_XRGB8888,
+ },
+ .expected_fourccs_size = 10,
+ },
+};
+
+static void fb_build_fourcc_list_case_desc(struct fb_build_fourcc_list_case *t, char *desc)
+{
+ strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);
+}
+
+KUNIT_ARRAY_PARAM(fb_build_fourcc_list, fb_build_fourcc_list_cases, fb_build_fourcc_list_case_desc);
+
+static void drm_test_fb_build_fourcc_list(struct kunit *test)
+{
+ const struct fb_build_fourcc_list_case *params = test->param_value;
+ u32 fourccs_out[TEST_BUF_SIZE];
+ size_t nfourccs_out;
+ struct drm_device *drm;
+ struct device *dev;
+
+ dev = drm_kunit_helper_alloc_device(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
+
+ drm = __drm_kunit_helper_alloc_drm_device(test, dev, sizeof(*drm), 0, DRIVER_MODESET);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, drm);
+
+ nfourccs_out = drm_fb_build_fourcc_list(drm, params->native_fourccs,
+ params->native_fourccs_size,
+ fourccs_out, TEST_BUF_SIZE);
+
+ KUNIT_EXPECT_EQ(test, nfourccs_out, params->expected_fourccs_size);
+ KUNIT_EXPECT_MEMEQ(test, fourccs_out, params->expected, TEST_BUF_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),
@@ -1055,6 +1198,7 @@ static struct kunit_case drm_format_helper_test_cases[] = {
KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_mono, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_swab, convert_xrgb8888_gen_params),
KUNIT_CASE_PARAM(drm_test_fb_clip_offset, clip_offset_gen_params),
+ KUNIT_CASE_PARAM(drm_test_fb_build_fourcc_list, fb_build_fourcc_list_gen_params),
{}
};
--
2.41.0
