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 u64 modifiers[] = { 23 DRM_FORMAT_MOD_LINEAR, 24 DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | 25 AFBC_FORMAT_MOD_SPLIT | 26 AFBC_FORMAT_MOD_SPARSE), 27 DRM_FORMAT_MOD_INVALID, 28 }; 29 30 static void mtk_plane_reset(struct drm_plane *plane) 31 { 32 struct mtk_plane_state *state; 33 34 if (plane->state) { 35 __drm_atomic_helper_plane_destroy_state(plane->state); 36 37 state = to_mtk_plane_state(plane->state); 38 memset(state, 0, sizeof(*state)); 39 } else { 40 state = kzalloc(sizeof(*state), GFP_KERNEL); 41 if (!state) 42 return; 43 } 44 45 __drm_atomic_helper_plane_reset(plane, &state->base); 46 47 state->base.plane = plane; 48 state->pending.format = DRM_FORMAT_RGB565; 49 state->pending.modifier = DRM_FORMAT_MOD_LINEAR; 50 } 51 52 static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane) 53 { 54 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state); 55 struct mtk_plane_state *state; 56 57 state = kmalloc(sizeof(*state), GFP_KERNEL); 58 if (!state) 59 return NULL; 60 61 __drm_atomic_helper_plane_duplicate_state(plane, &state->base); 62 63 WARN_ON(state->base.plane != plane); 64 65 state->pending = old_state->pending; 66 67 return &state->base; 68 } 69 70 static bool mtk_plane_format_mod_supported(struct drm_plane *plane, 71 uint32_t format, 72 uint64_t modifier) 73 { 74 if (modifier == DRM_FORMAT_MOD_LINEAR) 75 return true; 76 77 if (modifier != DRM_FORMAT_MOD_ARM_AFBC( 78 AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | 79 AFBC_FORMAT_MOD_SPLIT | 80 AFBC_FORMAT_MOD_SPARSE)) 81 return false; 82 83 if (format != DRM_FORMAT_XRGB8888 && 84 format != DRM_FORMAT_ARGB8888 && 85 format != DRM_FORMAT_BGRX8888 && 86 format != DRM_FORMAT_BGRA8888 && 87 format != DRM_FORMAT_ABGR8888 && 88 format != DRM_FORMAT_XBGR8888 && 89 format != DRM_FORMAT_RGB888 && 90 format != DRM_FORMAT_BGR888) 91 return false; 92 93 return true; 94 } 95 96 static void mtk_drm_plane_destroy_state(struct drm_plane *plane, 97 struct drm_plane_state *state) 98 { 99 __drm_atomic_helper_plane_destroy_state(state); 100 kfree(to_mtk_plane_state(state)); 101 } 102 103 static int mtk_plane_atomic_async_check(struct drm_plane *plane, 104 struct drm_atomic_state *state) 105 { 106 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 107 plane); 108 struct drm_crtc_state *crtc_state; 109 int ret; 110 111 if (plane != new_plane_state->crtc->cursor) 112 return -EINVAL; 113 114 if (!plane->state) 115 return -EINVAL; 116 117 if (!plane->state->fb) 118 return -EINVAL; 119 120 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane, 121 to_mtk_plane_state(new_plane_state)); 122 if (ret) 123 return ret; 124 125 if (state) 126 crtc_state = drm_atomic_get_existing_crtc_state(state, 127 new_plane_state->crtc); 128 else /* Special case for asynchronous cursor updates. */ 129 crtc_state = new_plane_state->crtc->state; 130 131 return drm_atomic_helper_check_plane_state(plane->state, crtc_state, 132 DRM_PLANE_NO_SCALING, 133 DRM_PLANE_NO_SCALING, 134 true, true); 135 } 136 137 static void mtk_plane_update_new_state(struct drm_plane_state *new_state, 138 struct mtk_plane_state *mtk_plane_state) 139 { 140 struct drm_framebuffer *fb = new_state->fb; 141 struct drm_gem_object *gem; 142 struct mtk_drm_gem_obj *mtk_gem; 143 unsigned int pitch, format; 144 u64 modifier; 145 dma_addr_t addr; 146 dma_addr_t hdr_addr = 0; 147 unsigned int hdr_pitch = 0; 148 149 gem = fb->obj[0]; 150 mtk_gem = to_mtk_gem_obj(gem); 151 addr = mtk_gem->dma_addr; 152 pitch = fb->pitches[0]; 153 format = fb->format->format; 154 modifier = fb->modifier; 155 156 if (modifier == DRM_FORMAT_MOD_LINEAR) { 157 addr += (new_state->src.x1 >> 16) * fb->format->cpp[0]; 158 addr += (new_state->src.y1 >> 16) * pitch; 159 } else { 160 int width_in_blocks = ALIGN(fb->width, AFBC_DATA_BLOCK_WIDTH) 161 / AFBC_DATA_BLOCK_WIDTH; 162 int height_in_blocks = ALIGN(fb->height, AFBC_DATA_BLOCK_HEIGHT) 163 / AFBC_DATA_BLOCK_HEIGHT; 164 int x_offset_in_blocks = (new_state->src.x1 >> 16) / AFBC_DATA_BLOCK_WIDTH; 165 int y_offset_in_blocks = (new_state->src.y1 >> 16) / AFBC_DATA_BLOCK_HEIGHT; 166 int hdr_size; 167 168 hdr_pitch = width_in_blocks * AFBC_HEADER_BLOCK_SIZE; 169 pitch = width_in_blocks * AFBC_DATA_BLOCK_WIDTH * 170 AFBC_DATA_BLOCK_HEIGHT * fb->format->cpp[0]; 171 172 hdr_size = ALIGN(hdr_pitch * height_in_blocks, AFBC_HEADER_ALIGNMENT); 173 174 hdr_addr = addr + hdr_pitch * y_offset_in_blocks + 175 AFBC_HEADER_BLOCK_SIZE * x_offset_in_blocks; 176 /* The data plane is offset by 1 additional block. */ 177 addr = addr + hdr_size + 178 pitch * y_offset_in_blocks + 179 AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT * 180 fb->format->cpp[0] * (x_offset_in_blocks + 1); 181 } 182 183 mtk_plane_state->pending.enable = true; 184 mtk_plane_state->pending.pitch = pitch; 185 mtk_plane_state->pending.hdr_pitch = hdr_pitch; 186 mtk_plane_state->pending.format = format; 187 mtk_plane_state->pending.modifier = modifier; 188 mtk_plane_state->pending.addr = addr; 189 mtk_plane_state->pending.hdr_addr = hdr_addr; 190 mtk_plane_state->pending.x = new_state->dst.x1; 191 mtk_plane_state->pending.y = new_state->dst.y1; 192 mtk_plane_state->pending.width = drm_rect_width(&new_state->dst); 193 mtk_plane_state->pending.height = drm_rect_height(&new_state->dst); 194 mtk_plane_state->pending.rotation = new_state->rotation; 195 mtk_plane_state->pending.color_encoding = new_state->color_encoding; 196 } 197 198 static void mtk_plane_atomic_async_update(struct drm_plane *plane, 199 struct drm_atomic_state *state) 200 { 201 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 202 plane); 203 struct mtk_plane_state *new_plane_state = to_mtk_plane_state(plane->state); 204 205 plane->state->crtc_x = new_state->crtc_x; 206 plane->state->crtc_y = new_state->crtc_y; 207 plane->state->crtc_h = new_state->crtc_h; 208 plane->state->crtc_w = new_state->crtc_w; 209 plane->state->src_x = new_state->src_x; 210 plane->state->src_y = new_state->src_y; 211 plane->state->src_h = new_state->src_h; 212 plane->state->src_w = new_state->src_w; 213 swap(plane->state->fb, new_state->fb); 214 215 mtk_plane_update_new_state(new_state, new_plane_state); 216 wmb(); /* Make sure the above parameters are set before update */ 217 new_plane_state->pending.async_dirty = true; 218 mtk_drm_crtc_async_update(new_state->crtc, plane, state); 219 } 220 221 static const struct drm_plane_funcs mtk_plane_funcs = { 222 .update_plane = drm_atomic_helper_update_plane, 223 .disable_plane = drm_atomic_helper_disable_plane, 224 .destroy = drm_plane_cleanup, 225 .reset = mtk_plane_reset, 226 .atomic_duplicate_state = mtk_plane_duplicate_state, 227 .atomic_destroy_state = mtk_drm_plane_destroy_state, 228 .format_mod_supported = mtk_plane_format_mod_supported, 229 }; 230 231 static int mtk_plane_atomic_check(struct drm_plane *plane, 232 struct drm_atomic_state *state) 233 { 234 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 235 plane); 236 struct drm_framebuffer *fb = new_plane_state->fb; 237 struct drm_crtc_state *crtc_state; 238 int ret; 239 240 if (!fb) 241 return 0; 242 243 if (WARN_ON(!new_plane_state->crtc)) 244 return 0; 245 246 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane, 247 to_mtk_plane_state(new_plane_state)); 248 if (ret) 249 return ret; 250 251 crtc_state = drm_atomic_get_crtc_state(state, 252 new_plane_state->crtc); 253 if (IS_ERR(crtc_state)) 254 return PTR_ERR(crtc_state); 255 256 return drm_atomic_helper_check_plane_state(new_plane_state, 257 crtc_state, 258 DRM_PLANE_NO_SCALING, 259 DRM_PLANE_NO_SCALING, 260 true, true); 261 } 262 263 static void mtk_plane_atomic_disable(struct drm_plane *plane, 264 struct drm_atomic_state *state) 265 { 266 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 267 plane); 268 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state); 269 mtk_plane_state->pending.enable = false; 270 wmb(); /* Make sure the above parameter is set before update */ 271 mtk_plane_state->pending.dirty = true; 272 } 273 274 static void mtk_plane_atomic_update(struct drm_plane *plane, 275 struct drm_atomic_state *state) 276 { 277 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 278 plane); 279 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state); 280 281 if (!new_state->crtc || WARN_ON(!new_state->fb)) 282 return; 283 284 if (!new_state->visible) { 285 mtk_plane_atomic_disable(plane, state); 286 return; 287 } 288 289 mtk_plane_update_new_state(new_state, mtk_plane_state); 290 wmb(); /* Make sure the above parameters are set before update */ 291 mtk_plane_state->pending.dirty = true; 292 } 293 294 static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { 295 .atomic_check = mtk_plane_atomic_check, 296 .atomic_update = mtk_plane_atomic_update, 297 .atomic_disable = mtk_plane_atomic_disable, 298 .atomic_async_update = mtk_plane_atomic_async_update, 299 .atomic_async_check = mtk_plane_atomic_async_check, 300 }; 301 302 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, 303 unsigned long possible_crtcs, enum drm_plane_type type, 304 unsigned int supported_rotations, const u32 *formats, 305 size_t num_formats) 306 { 307 int err; 308 309 if (!formats || !num_formats) { 310 DRM_ERROR("no formats for plane\n"); 311 return -EINVAL; 312 } 313 314 err = drm_universal_plane_init(dev, plane, possible_crtcs, 315 &mtk_plane_funcs, formats, 316 num_formats, modifiers, type, NULL); 317 if (err) { 318 DRM_ERROR("failed to initialize plane\n"); 319 return err; 320 } 321 322 if (supported_rotations & ~DRM_MODE_ROTATE_0) { 323 err = drm_plane_create_rotation_property(plane, 324 DRM_MODE_ROTATE_0, 325 supported_rotations); 326 if (err) 327 DRM_INFO("Create rotation property failed\n"); 328 } 329 330 drm_plane_helper_add(plane, &mtk_plane_helper_funcs); 331 332 return 0; 333 } 334