drm/test: Add test cases for drm_rect_rotate_inv()

Insert a parameterized test for the drm_rect_rotate_inv() to ensure its
correctness and prevent future regressions. The test covers all rotation
modes.

It uses the same test cases from drm_test_rect_rotate().

Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20230418230146.461129-6-arthurgrillo@riseup.net

diff --git a/drivers/gpu/drm/tests/drm_rect_test.c b/drivers/gpu/drm/tests/drm_rect_test.c
index 514b9b3337e99d523d01e33f15bec2739d9a5c0a..76332cd2ead832272cdca652006998bde7429222 100644 (file)
--- a/drivers/gpu/drm/tests/drm_rect_test.c
+++ b/drivers/gpu/drm/tests/drm_rect_test.c
@@ -496,6 +496,16 @@ static void drm_test_rect_rotate(struct kunit *test)
        drm_rect_compare(test, &r, &params->expected);
 }
 
+static void drm_test_rect_rotate_inv(struct kunit *test)
+{
+       const struct drm_rect_rotate_case *params = test->param_value;
+       struct drm_rect r = params->expected;
+
+       drm_rect_rotate_inv(&r, params->width, params->height, params->rotation);
+
+       drm_rect_compare(test, &r, &params->rect);
+}
+
 static struct kunit_case drm_rect_tests[] = {
        KUNIT_CASE(drm_test_rect_clip_scaled_div_by_zero),
        KUNIT_CASE(drm_test_rect_clip_scaled_not_clipped),
@@ -505,6 +515,7 @@ static struct kunit_case drm_rect_tests[] = {
        KUNIT_CASE_PARAM(drm_test_rect_calc_hscale, drm_rect_scale_gen_params),
        KUNIT_CASE_PARAM(drm_test_rect_calc_vscale, drm_rect_scale_gen_params),
        KUNIT_CASE_PARAM(drm_test_rect_rotate, drm_rect_rotate_gen_params),
+       KUNIT_CASE_PARAM(drm_test_rect_rotate_inv, drm_rect_rotate_gen_params),
        { }
 };