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