238 lines
8.4 KiB
C
238 lines
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Test cases for the drm_plane_helper functions
|
|
*
|
|
* Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net>
|
|
*/
|
|
|
|
#include <kunit/test.h>
|
|
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_framebuffer.h>
|
|
#include <drm/drm_modes.h>
|
|
|
|
static void set_src(struct drm_plane_state *plane_state,
|
|
unsigned int src_x, unsigned int src_y,
|
|
unsigned int src_w, unsigned int src_h)
|
|
{
|
|
plane_state->src_x = src_x;
|
|
plane_state->src_y = src_y;
|
|
plane_state->src_w = src_w;
|
|
plane_state->src_h = src_h;
|
|
}
|
|
|
|
static bool check_src_eq(struct drm_plane_state *plane_state,
|
|
unsigned int src_x, unsigned int src_y,
|
|
unsigned int src_w, unsigned int src_h)
|
|
{
|
|
if (plane_state->src.x1 < 0) {
|
|
pr_err("src x coordinate %x should never be below 0.\n", plane_state->src.x1);
|
|
drm_rect_debug_print("src: ", &plane_state->src, true);
|
|
return false;
|
|
}
|
|
if (plane_state->src.y1 < 0) {
|
|
pr_err("src y coordinate %x should never be below 0.\n", plane_state->src.y1);
|
|
drm_rect_debug_print("src: ", &plane_state->src, true);
|
|
return false;
|
|
}
|
|
|
|
if (plane_state->src.x1 != src_x ||
|
|
plane_state->src.y1 != src_y ||
|
|
drm_rect_width(&plane_state->src) != src_w ||
|
|
drm_rect_height(&plane_state->src) != src_h) {
|
|
drm_rect_debug_print("src: ", &plane_state->src, true);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void set_crtc(struct drm_plane_state *plane_state,
|
|
int crtc_x, int crtc_y,
|
|
unsigned int crtc_w, unsigned int crtc_h)
|
|
{
|
|
plane_state->crtc_x = crtc_x;
|
|
plane_state->crtc_y = crtc_y;
|
|
plane_state->crtc_w = crtc_w;
|
|
plane_state->crtc_h = crtc_h;
|
|
}
|
|
|
|
static bool check_crtc_eq(struct drm_plane_state *plane_state,
|
|
int crtc_x, int crtc_y,
|
|
unsigned int crtc_w, unsigned int crtc_h)
|
|
{
|
|
if (plane_state->dst.x1 != crtc_x ||
|
|
plane_state->dst.y1 != crtc_y ||
|
|
drm_rect_width(&plane_state->dst) != crtc_w ||
|
|
drm_rect_height(&plane_state->dst) != crtc_h) {
|
|
drm_rect_debug_print("dst: ", &plane_state->dst, false);
|
|
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void igt_check_plane_state(struct kunit *test)
|
|
{
|
|
int ret;
|
|
|
|
static const struct drm_crtc_state crtc_state = {
|
|
.crtc = ZERO_SIZE_PTR,
|
|
.enable = true,
|
|
.active = true,
|
|
.mode = {
|
|
DRM_MODE("1024x768", 0, 65000, 1024, 1048, 1184, 1344, 0, 768, 771,
|
|
777, 806, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)
|
|
},
|
|
};
|
|
static struct drm_plane plane = {
|
|
.dev = NULL
|
|
};
|
|
static struct drm_framebuffer fb = {
|
|
.width = 2048,
|
|
.height = 2048
|
|
};
|
|
static struct drm_plane_state plane_state = {
|
|
.plane = &plane,
|
|
.crtc = ZERO_SIZE_PTR,
|
|
.fb = &fb,
|
|
.rotation = DRM_MODE_ROTATE_0
|
|
};
|
|
|
|
/* Simple clipping, no scaling. */
|
|
set_src(&plane_state, 0, 0, fb.width << 16, fb.height << 16);
|
|
set_crtc(&plane_state, 0, 0, fb.width, fb.height);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
DRM_PLANE_NO_SCALING,
|
|
false, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Simple clipping check should pass\n");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 1024 << 16, 768 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
|
|
|
|
/* Rotated clipping + reflection, no scaling. */
|
|
plane_state.rotation = DRM_MODE_ROTATE_90 | DRM_MODE_REFLECT_X;
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
DRM_PLANE_NO_SCALING,
|
|
false, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Rotated clipping check should pass\n");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 768 << 16, 1024 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
|
|
plane_state.rotation = DRM_MODE_ROTATE_0;
|
|
|
|
/* Check whether positioning works correctly. */
|
|
set_src(&plane_state, 0, 0, 1023 << 16, 767 << 16);
|
|
set_crtc(&plane_state, 0, 0, 1023, 767);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
DRM_PLANE_NO_SCALING,
|
|
false, false);
|
|
KUNIT_EXPECT_TRUE_MSG(test, ret,
|
|
"Should not be able to position on the crtc with can_position=false\n");
|
|
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
DRM_PLANE_NO_SCALING,
|
|
true, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Simple positioning should work\n");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 1023 << 16, 767 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1023, 767));
|
|
|
|
/* Simple scaling tests. */
|
|
set_src(&plane_state, 0, 0, 512 << 16, 384 << 16);
|
|
set_crtc(&plane_state, 0, 0, 1024, 768);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
0x8001,
|
|
DRM_PLANE_NO_SCALING,
|
|
false, false);
|
|
KUNIT_EXPECT_TRUE_MSG(test, ret, "Upscaling out of range should fail.\n");
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
0x8000,
|
|
DRM_PLANE_NO_SCALING,
|
|
false, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Upscaling exactly 2x should work\n");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 512 << 16, 384 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
|
|
|
|
set_src(&plane_state, 0, 0, 2048 << 16, 1536 << 16);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
0x1ffff, false, false);
|
|
KUNIT_EXPECT_TRUE_MSG(test, ret, "Downscaling out of range should fail.\n");
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
0x20000, false, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed with exact scaling limit\n");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2048 << 16, 1536 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
|
|
|
|
/* Testing rounding errors. */
|
|
set_src(&plane_state, 0, 0, 0x40001, 0x40001);
|
|
set_crtc(&plane_state, 1022, 766, 4, 4);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
0x10001,
|
|
true, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 1022, 766, 2, 2));
|
|
|
|
set_src(&plane_state, 0x20001, 0x20001, 0x4040001, 0x3040001);
|
|
set_crtc(&plane_state, -2, -2, 1028, 772);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
DRM_PLANE_NO_SCALING,
|
|
0x10001,
|
|
false, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0x40002, 0x40002,
|
|
1024 << 16, 768 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
|
|
|
|
set_src(&plane_state, 0, 0, 0x3ffff, 0x3ffff);
|
|
set_crtc(&plane_state, 1022, 766, 4, 4);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
0xffff,
|
|
DRM_PLANE_NO_SCALING,
|
|
true, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
/* Should not be rounded to 0x20001, which would be upscaling. */
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 1022, 766, 2, 2));
|
|
|
|
set_src(&plane_state, 0x1ffff, 0x1ffff, 0x403ffff, 0x303ffff);
|
|
set_crtc(&plane_state, -2, -2, 1028, 772);
|
|
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
|
|
0xffff,
|
|
DRM_PLANE_NO_SCALING,
|
|
false, false);
|
|
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
|
|
KUNIT_EXPECT_TRUE(test, plane_state.visible);
|
|
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0x3fffe, 0x3fffe,
|
|
1024 << 16, 768 << 16));
|
|
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
|
|
}
|
|
|
|
static struct kunit_case drm_plane_helper_test[] = {
|
|
KUNIT_CASE(igt_check_plane_state),
|
|
{}
|
|
};
|
|
|
|
static struct kunit_suite drm_plane_helper_test_suite = {
|
|
.name = "drm_plane_helper",
|
|
.test_cases = drm_plane_helper_test,
|
|
};
|
|
|
|
kunit_test_suite(drm_plane_helper_test_suite);
|
|
|
|
MODULE_LICENSE("GPL");
|