test-drm_plane_helper.c (7707B)
1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Test cases for the drm_plane_helper functions 4 */ 5 6#define pr_fmt(fmt) "drm_plane_helper: " fmt 7 8#include <drm/drm_atomic_helper.h> 9#include <drm/drm_plane_helper.h> 10#include <drm/drm_modes.h> 11 12#include "test-drm_modeset_common.h" 13 14static void set_src(struct drm_plane_state *plane_state, 15 unsigned src_x, unsigned src_y, 16 unsigned src_w, unsigned src_h) 17{ 18 plane_state->src_x = src_x; 19 plane_state->src_y = src_y; 20 plane_state->src_w = src_w; 21 plane_state->src_h = src_h; 22} 23 24static bool check_src_eq(struct drm_plane_state *plane_state, 25 unsigned src_x, unsigned src_y, 26 unsigned src_w, unsigned src_h) 27{ 28 if (plane_state->src.x1 < 0) { 29 pr_err("src x coordinate %x should never be below 0.\n", plane_state->src.x1); 30 drm_rect_debug_print("src: ", &plane_state->src, true); 31 return false; 32 } 33 if (plane_state->src.y1 < 0) { 34 pr_err("src y coordinate %x should never be below 0.\n", plane_state->src.y1); 35 drm_rect_debug_print("src: ", &plane_state->src, true); 36 return false; 37 } 38 39 if (plane_state->src.x1 != src_x || 40 plane_state->src.y1 != src_y || 41 drm_rect_width(&plane_state->src) != src_w || 42 drm_rect_height(&plane_state->src) != src_h) { 43 drm_rect_debug_print("src: ", &plane_state->src, true); 44 return false; 45 } 46 47 return true; 48} 49 50static void set_crtc(struct drm_plane_state *plane_state, 51 int crtc_x, int crtc_y, 52 unsigned crtc_w, unsigned crtc_h) 53{ 54 plane_state->crtc_x = crtc_x; 55 plane_state->crtc_y = crtc_y; 56 plane_state->crtc_w = crtc_w; 57 plane_state->crtc_h = crtc_h; 58} 59 60static bool check_crtc_eq(struct drm_plane_state *plane_state, 61 int crtc_x, int crtc_y, 62 unsigned crtc_w, unsigned crtc_h) 63{ 64 if (plane_state->dst.x1 != crtc_x || 65 plane_state->dst.y1 != crtc_y || 66 drm_rect_width(&plane_state->dst) != crtc_w || 67 drm_rect_height(&plane_state->dst) != crtc_h) { 68 drm_rect_debug_print("dst: ", &plane_state->dst, false); 69 70 return false; 71 } 72 73 return true; 74} 75 76int igt_check_plane_state(void *ignored) 77{ 78 int ret; 79 80 static const struct drm_crtc_state crtc_state = { 81 .crtc = ZERO_SIZE_PTR, 82 .enable = true, 83 .active = true, 84 .mode = { 85 DRM_MODE("1024x768", 0, 65000, 1024, 1048, 86 1184, 1344, 0, 768, 771, 777, 806, 0, 87 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) 88 }, 89 }; 90 static struct drm_plane plane = { 91 .dev = NULL 92 }; 93 static struct drm_framebuffer fb = { 94 .width = 2048, 95 .height = 2048 96 }; 97 static struct drm_plane_state plane_state = { 98 .plane = &plane, 99 .crtc = ZERO_SIZE_PTR, 100 .fb = &fb, 101 .rotation = DRM_MODE_ROTATE_0 102 }; 103 104 /* Simple clipping, no scaling. */ 105 set_src(&plane_state, 0, 0, fb.width << 16, fb.height << 16); 106 set_crtc(&plane_state, 0, 0, fb.width, fb.height); 107 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 108 DRM_PLANE_HELPER_NO_SCALING, 109 DRM_PLANE_HELPER_NO_SCALING, 110 false, false); 111 FAIL(ret < 0, "Simple clipping check should pass\n"); 112 FAIL_ON(!plane_state.visible); 113 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 1024 << 16, 768 << 16)); 114 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1024, 768)); 115 116 /* Rotated clipping + reflection, no scaling. */ 117 plane_state.rotation = DRM_MODE_ROTATE_90 | DRM_MODE_REFLECT_X; 118 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 119 DRM_PLANE_HELPER_NO_SCALING, 120 DRM_PLANE_HELPER_NO_SCALING, 121 false, false); 122 FAIL(ret < 0, "Rotated clipping check should pass\n"); 123 FAIL_ON(!plane_state.visible); 124 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 768 << 16, 1024 << 16)); 125 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1024, 768)); 126 plane_state.rotation = DRM_MODE_ROTATE_0; 127 128 /* Check whether positioning works correctly. */ 129 set_src(&plane_state, 0, 0, 1023 << 16, 767 << 16); 130 set_crtc(&plane_state, 0, 0, 1023, 767); 131 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 132 DRM_PLANE_HELPER_NO_SCALING, 133 DRM_PLANE_HELPER_NO_SCALING, 134 false, false); 135 FAIL(!ret, "Should not be able to position on the crtc with can_position=false\n"); 136 137 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 138 DRM_PLANE_HELPER_NO_SCALING, 139 DRM_PLANE_HELPER_NO_SCALING, 140 true, false); 141 FAIL(ret < 0, "Simple positioning should work\n"); 142 FAIL_ON(!plane_state.visible); 143 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 1023 << 16, 767 << 16)); 144 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1023, 767)); 145 146 /* Simple scaling tests. */ 147 set_src(&plane_state, 0, 0, 512 << 16, 384 << 16); 148 set_crtc(&plane_state, 0, 0, 1024, 768); 149 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 150 0x8001, 151 DRM_PLANE_HELPER_NO_SCALING, 152 false, false); 153 FAIL(!ret, "Upscaling out of range should fail.\n"); 154 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 155 0x8000, 156 DRM_PLANE_HELPER_NO_SCALING, 157 false, false); 158 FAIL(ret < 0, "Upscaling exactly 2x should work\n"); 159 FAIL_ON(!plane_state.visible); 160 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 512 << 16, 384 << 16)); 161 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1024, 768)); 162 163 set_src(&plane_state, 0, 0, 2048 << 16, 1536 << 16); 164 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 165 DRM_PLANE_HELPER_NO_SCALING, 166 0x1ffff, false, false); 167 FAIL(!ret, "Downscaling out of range should fail.\n"); 168 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 169 DRM_PLANE_HELPER_NO_SCALING, 170 0x20000, false, false); 171 FAIL(ret < 0, "Should succeed with exact scaling limit\n"); 172 FAIL_ON(!plane_state.visible); 173 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 2048 << 16, 1536 << 16)); 174 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1024, 768)); 175 176 /* Testing rounding errors. */ 177 set_src(&plane_state, 0, 0, 0x40001, 0x40001); 178 set_crtc(&plane_state, 1022, 766, 4, 4); 179 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 180 DRM_PLANE_HELPER_NO_SCALING, 181 0x10001, 182 true, false); 183 FAIL(ret < 0, "Should succeed by clipping to exact multiple"); 184 FAIL_ON(!plane_state.visible); 185 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16)); 186 FAIL_ON(!check_crtc_eq(&plane_state, 1022, 766, 2, 2)); 187 188 set_src(&plane_state, 0x20001, 0x20001, 0x4040001, 0x3040001); 189 set_crtc(&plane_state, -2, -2, 1028, 772); 190 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 191 DRM_PLANE_HELPER_NO_SCALING, 192 0x10001, 193 false, false); 194 FAIL(ret < 0, "Should succeed by clipping to exact multiple"); 195 FAIL_ON(!plane_state.visible); 196 FAIL_ON(!check_src_eq(&plane_state, 0x40002, 0x40002, 1024 << 16, 768 << 16)); 197 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1024, 768)); 198 199 set_src(&plane_state, 0, 0, 0x3ffff, 0x3ffff); 200 set_crtc(&plane_state, 1022, 766, 4, 4); 201 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 202 0xffff, 203 DRM_PLANE_HELPER_NO_SCALING, 204 true, false); 205 FAIL(ret < 0, "Should succeed by clipping to exact multiple"); 206 FAIL_ON(!plane_state.visible); 207 /* Should not be rounded to 0x20001, which would be upscaling. */ 208 FAIL_ON(!check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16)); 209 FAIL_ON(!check_crtc_eq(&plane_state, 1022, 766, 2, 2)); 210 211 set_src(&plane_state, 0x1ffff, 0x1ffff, 0x403ffff, 0x303ffff); 212 set_crtc(&plane_state, -2, -2, 1028, 772); 213 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 214 0xffff, 215 DRM_PLANE_HELPER_NO_SCALING, 216 false, false); 217 FAIL(ret < 0, "Should succeed by clipping to exact multiple"); 218 FAIL_ON(!plane_state.visible); 219 FAIL_ON(!check_src_eq(&plane_state, 0x3fffe, 0x3fffe, 1024 << 16, 768 << 16)); 220 FAIL_ON(!check_crtc_eq(&plane_state, 0, 0, 1024, 768)); 221 222 return 0; 223}