1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2015 MediaTek Inc. 4 * Author: CK Hu <ck.hu@mediatek.com> 5 */ 6 7 #include <drm/drm_atomic.h> 8 #include <drm/drm_atomic_helper.h> 9 #include <drm/drm_atomic_uapi.h> 10 #include <drm/drm_blend.h> 11 #include <drm/drm_fourcc.h> 12 #include <drm/drm_framebuffer.h> 13 #include <drm/drm_gem_atomic_helper.h> 14 #include <linux/align.h> 15 16 #include "mtk_drm_crtc.h" 17 #include "mtk_drm_ddp_comp.h" 18 #include "mtk_drm_drv.h" 19 #include "mtk_drm_gem.h" 20 #include "mtk_drm_plane.h" 21 22 static const u32 formats[] = { 23 DRM_FORMAT_XRGB8888, 24 DRM_FORMAT_ARGB8888, 25 DRM_FORMAT_BGRX8888, 26 DRM_FORMAT_BGRA8888, 27 DRM_FORMAT_ABGR8888, 28 DRM_FORMAT_XBGR8888, 29 DRM_FORMAT_RGB888, 30 DRM_FORMAT_BGR888, 31 DRM_FORMAT_RGB565, 32 DRM_FORMAT_UYVY, 33 DRM_FORMAT_YUYV, 34 }; 35 36 static const u64 modifiers[] = { 37 DRM_FORMAT_MOD_LINEAR, 38 DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | 39 AFBC_FORMAT_MOD_SPLIT | 40 AFBC_FORMAT_MOD_SPARSE), 41 DRM_FORMAT_MOD_INVALID, 42 }; 43 44 static void mtk_plane_reset(struct drm_plane *plane) 45 { 46 struct mtk_plane_state *state; 47 48 if (plane->state) { 49 __drm_atomic_helper_plane_destroy_state(plane->state); 50 51 state = to_mtk_plane_state(plane->state); 52 memset(state, 0, sizeof(*state)); 53 } else { 54 state = kzalloc(sizeof(*state), GFP_KERNEL); 55 if (!state) 56 return; 57 } 58 59 __drm_atomic_helper_plane_reset(plane, &state->base); 60 61 state->base.plane = plane; 62 state->pending.format = DRM_FORMAT_RGB565; 63 state->pending.modifier = DRM_FORMAT_MOD_LINEAR; 64 } 65 66 static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane) 67 { 68 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state); 69 struct mtk_plane_state *state; 70 71 state = kmalloc(sizeof(*state), GFP_KERNEL); 72 if (!state) 73 return NULL; 74 75 __drm_atomic_helper_plane_duplicate_state(plane, &state->base); 76 77 WARN_ON(state->base.plane != plane); 78 79 state->pending = old_state->pending; 80 81 return &state->base; 82 } 83 84 static bool mtk_plane_format_mod_supported(struct drm_plane *plane, 85 uint32_t format, 86 uint64_t modifier) 87 { 88 if (modifier == DRM_FORMAT_MOD_LINEAR) 89 return true; 90 91 if (modifier != DRM_FORMAT_MOD_ARM_AFBC( 92 AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | 93 AFBC_FORMAT_MOD_SPLIT | 94 AFBC_FORMAT_MOD_SPARSE)) 95 return false; 96 97 if (format != DRM_FORMAT_XRGB8888 && 98 format != DRM_FORMAT_ARGB8888 && 99 format != DRM_FORMAT_BGRX8888 && 100 format != DRM_FORMAT_BGRA8888 && 101 format != DRM_FORMAT_ABGR8888 && 102 format != DRM_FORMAT_XBGR8888 && 103 format != DRM_FORMAT_RGB888 && 104 format != DRM_FORMAT_BGR888) 105 return false; 106 107 return true; 108 } 109 110 static void mtk_drm_plane_destroy_state(struct drm_plane *plane, 111 struct drm_plane_state *state) 112 { 113 __drm_atomic_helper_plane_destroy_state(state); 114 kfree(to_mtk_plane_state(state)); 115 } 116 117 static int mtk_plane_atomic_async_check(struct drm_plane *plane, 118 struct drm_atomic_state *state) 119 { 120 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 121 plane); 122 struct drm_crtc_state *crtc_state; 123 int ret; 124 125 if (plane != new_plane_state->crtc->cursor) 126 return -EINVAL; 127 128 if (!plane->state) 129 return -EINVAL; 130 131 if (!plane->state->fb) 132 return -EINVAL; 133 134 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane, 135 to_mtk_plane_state(new_plane_state)); 136 if (ret) 137 return ret; 138 139 if (state) 140 crtc_state = drm_atomic_get_existing_crtc_state(state, 141 new_plane_state->crtc); 142 else /* Special case for asynchronous cursor updates. */ 143 crtc_state = new_plane_state->crtc->state; 144 145 return drm_atomic_helper_check_plane_state(plane->state, crtc_state, 146 DRM_PLANE_NO_SCALING, 147 DRM_PLANE_NO_SCALING, 148 true, true); 149 } 150 151 static void mtk_plane_update_new_state(struct drm_plane_state *new_state, 152 struct mtk_plane_state *mtk_plane_state) 153 { 154 struct drm_framebuffer *fb = new_state->fb; 155 struct drm_gem_object *gem; 156 struct mtk_drm_gem_obj *mtk_gem; 157 unsigned int pitch, format; 158 u64 modifier; 159 dma_addr_t addr; 160 dma_addr_t hdr_addr = 0; 161 unsigned int hdr_pitch = 0; 162 163 gem = fb->obj[0]; 164 mtk_gem = to_mtk_gem_obj(gem); 165 addr = mtk_gem->dma_addr; 166 pitch = fb->pitches[0]; 167 format = fb->format->format; 168 modifier = fb->modifier; 169 170 if (modifier == DRM_FORMAT_MOD_LINEAR) { 171 addr += (new_state->src.x1 >> 16) * fb->format->cpp[0]; 172 addr += (new_state->src.y1 >> 16) * pitch; 173 } else { 174 int width_in_blocks = ALIGN(fb->width, AFBC_DATA_BLOCK_WIDTH) 175 / AFBC_DATA_BLOCK_WIDTH; 176 int height_in_blocks = ALIGN(fb->height, AFBC_DATA_BLOCK_HEIGHT) 177 / AFBC_DATA_BLOCK_HEIGHT; 178 int x_offset_in_blocks = (new_state->src.x1 >> 16) / AFBC_DATA_BLOCK_WIDTH; 179 int y_offset_in_blocks = (new_state->src.y1 >> 16) / AFBC_DATA_BLOCK_HEIGHT; 180 int hdr_size; 181 182 hdr_pitch = width_in_blocks * AFBC_HEADER_BLOCK_SIZE; 183 pitch = width_in_blocks * AFBC_DATA_BLOCK_WIDTH * 184 AFBC_DATA_BLOCK_HEIGHT * fb->format->cpp[0]; 185 186 hdr_size = ALIGN(hdr_pitch * height_in_blocks, AFBC_HEADER_ALIGNMENT); 187 188 hdr_addr = addr + hdr_pitch * y_offset_in_blocks + 189 AFBC_HEADER_BLOCK_SIZE * x_offset_in_blocks; 190 /* The data plane is offset by 1 additional block. */ 191 addr = addr + hdr_size + 192 pitch * y_offset_in_blocks + 193 AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT * 194 fb->format->cpp[0] * (x_offset_in_blocks + 1); 195 } 196 197 mtk_plane_state->pending.enable = true; 198 mtk_plane_state->pending.pitch = pitch; 199 mtk_plane_state->pending.hdr_pitch = hdr_pitch; 200 mtk_plane_state->pending.format = format; 201 mtk_plane_state->pending.modifier = modifier; 202 mtk_plane_state->pending.addr = addr; 203 mtk_plane_state->pending.hdr_addr = hdr_addr; 204 mtk_plane_state->pending.x = new_state->dst.x1; 205 mtk_plane_state->pending.y = new_state->dst.y1; 206 mtk_plane_state->pending.width = drm_rect_width(&new_state->dst); 207 mtk_plane_state->pending.height = drm_rect_height(&new_state->dst); 208 mtk_plane_state->pending.rotation = new_state->rotation; 209 mtk_plane_state->pending.color_encoding = new_state->color_encoding; 210 } 211 212 static void mtk_plane_atomic_async_update(struct drm_plane *plane, 213 struct drm_atomic_state *state) 214 { 215 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 216 plane); 217 struct mtk_plane_state *new_plane_state = to_mtk_plane_state(plane->state); 218 219 plane->state->crtc_x = new_state->crtc_x; 220 plane->state->crtc_y = new_state->crtc_y; 221 plane->state->crtc_h = new_state->crtc_h; 222 plane->state->crtc_w = new_state->crtc_w; 223 plane->state->src_x = new_state->src_x; 224 plane->state->src_y = new_state->src_y; 225 plane->state->src_h = new_state->src_h; 226 plane->state->src_w = new_state->src_w; 227 swap(plane->state->fb, new_state->fb); 228 229 mtk_plane_update_new_state(new_state, new_plane_state); 230 wmb(); /* Make sure the above parameters are set before update */ 231 new_plane_state->pending.async_dirty = true; 232 mtk_drm_crtc_async_update(new_state->crtc, plane, state); 233 } 234 235 static const struct drm_plane_funcs mtk_plane_funcs = { 236 .update_plane = drm_atomic_helper_update_plane, 237 .disable_plane = drm_atomic_helper_disable_plane, 238 .destroy = drm_plane_cleanup, 239 .reset = mtk_plane_reset, 240 .atomic_duplicate_state = mtk_plane_duplicate_state, 241 .atomic_destroy_state = mtk_drm_plane_destroy_state, 242 .format_mod_supported = mtk_plane_format_mod_supported, 243 }; 244 245 static int mtk_plane_atomic_check(struct drm_plane *plane, 246 struct drm_atomic_state *state) 247 { 248 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 249 plane); 250 struct drm_framebuffer *fb = new_plane_state->fb; 251 struct drm_crtc_state *crtc_state; 252 int ret; 253 254 if (!fb) 255 return 0; 256 257 if (WARN_ON(!new_plane_state->crtc)) 258 return 0; 259 260 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane, 261 to_mtk_plane_state(new_plane_state)); 262 if (ret) 263 return ret; 264 265 crtc_state = drm_atomic_get_crtc_state(state, 266 new_plane_state->crtc); 267 if (IS_ERR(crtc_state)) 268 return PTR_ERR(crtc_state); 269 270 return drm_atomic_helper_check_plane_state(new_plane_state, 271 crtc_state, 272 DRM_PLANE_NO_SCALING, 273 DRM_PLANE_NO_SCALING, 274 true, true); 275 } 276 277 static void mtk_plane_atomic_disable(struct drm_plane *plane, 278 struct drm_atomic_state *state) 279 { 280 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 281 plane); 282 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state); 283 mtk_plane_state->pending.enable = false; 284 wmb(); /* Make sure the above parameter is set before update */ 285 mtk_plane_state->pending.dirty = true; 286 } 287 288 static void mtk_plane_atomic_update(struct drm_plane *plane, 289 struct drm_atomic_state *state) 290 { 291 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 292 plane); 293 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state); 294 295 if (!new_state->crtc || WARN_ON(!new_state->fb)) 296 return; 297 298 if (!new_state->visible) { 299 mtk_plane_atomic_disable(plane, state); 300 return; 301 } 302 303 mtk_plane_update_new_state(new_state, mtk_plane_state); 304 wmb(); /* Make sure the above parameters are set before update */ 305 mtk_plane_state->pending.dirty = true; 306 } 307 308 static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { 309 .atomic_check = mtk_plane_atomic_check, 310 .atomic_update = mtk_plane_atomic_update, 311 .atomic_disable = mtk_plane_atomic_disable, 312 .atomic_async_update = mtk_plane_atomic_async_update, 313 .atomic_async_check = mtk_plane_atomic_async_check, 314 }; 315 316 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, 317 unsigned long possible_crtcs, enum drm_plane_type type, 318 unsigned int supported_rotations) 319 { 320 int err; 321 322 err = drm_universal_plane_init(dev, plane, possible_crtcs, 323 &mtk_plane_funcs, formats, 324 ARRAY_SIZE(formats), modifiers, type, NULL); 325 if (err) { 326 DRM_ERROR("failed to initialize plane\n"); 327 return err; 328 } 329 330 if (supported_rotations & ~DRM_MODE_ROTATE_0) { 331 err = drm_plane_create_rotation_property(plane, 332 DRM_MODE_ROTATE_0, 333 supported_rotations); 334 if (err) 335 DRM_INFO("Create rotation property failed\n"); 336 } 337 338 drm_plane_helper_add(plane, &mtk_plane_helper_funcs); 339 340 return 0; 341 } 342