2 * Copyright 2014 The Chromium OS Authors. All rights reserved.
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
10 #include <rockchip_drm.h>
21 static const uint32_t supported_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
22 DRM_FORMAT_NV12, DRM_FORMAT_R8,
23 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
24 DRM_FORMAT_XRGB8888, DRM_FORMAT_YVU420,
25 DRM_FORMAT_YVU420_ANDROID };
27 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, uint32_t format)
29 /* We've restricted ourselves to four bytes per pixel. */
30 const uint32_t pixel_size = 4;
32 const uint32_t clump_width = 4;
33 const uint32_t clump_height = 4;
37 const uint32_t block_width = 4 * clump_width;
38 const uint32_t block_height = 4 * clump_height;
40 const uint32_t block_width = 8 * clump_width;
41 const uint32_t block_height = 2 * clump_height;
44 const uint32_t header_block_size = 16;
45 const uint32_t body_block_size = block_width * block_height * pixel_size;
46 const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
47 const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
48 const uint32_t total_blocks = width_in_blocks * height_in_blocks;
50 const uint32_t header_plane_size = total_blocks * header_block_size;
51 const uint32_t body_plane_size = total_blocks * body_block_size;
53 /* GPU requires 64 bytes, but EGL import code expects 1024 byte
54 * alignement for the body plane. */
55 const uint32_t body_plane_alignment = 1024;
57 const uint32_t body_plane_offset = ALIGN(header_plane_size, body_plane_alignment);
58 const uint32_t total_size = body_plane_offset + body_plane_size;
60 bo->strides[0] = width_in_blocks * block_width * pixel_size;
61 bo->sizes[0] = total_size;
64 bo->total_size = total_size;
66 bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;
71 static int rockchip_add_kms_item(struct driver *drv, const struct kms_item *item)
76 struct combination *combo;
77 struct format_metadata metadata;
79 for (i = 0; i < drv->backend->combos.size; i++) {
80 combo = &drv->backend->combos.data[i];
81 if (combo->format == item->format) {
82 if (item->modifier == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
83 flags = BO_USE_RENDERING | BO_USE_SCANOUT | BO_USE_TEXTURE;
84 metadata.modifier = item->modifier;
86 metadata.priority = 2;
88 ret = drv_add_combination(drv, item[i].format, &metadata, flags);
92 combo->usage |= item->usage;
100 static int rockchip_init(struct driver *drv)
103 uint32_t i, num_items;
104 struct kms_item *items;
105 struct format_metadata metadata;
108 metadata.priority = 1;
109 metadata.modifier = DRM_FORMAT_MOD_NONE;
111 ret = drv_add_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats), &metadata,
116 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
117 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
119 items = drv_query_kms(drv, &num_items);
120 if (!items || !num_items)
123 for (i = 0; i < num_items; i++) {
124 ret = rockchip_add_kms_item(drv, &items[i]);
135 static bool has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier)
139 for (i = 0; i < count; i++)
140 if (list[i] == modifier)
146 static int rockchip_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
147 uint32_t format, const uint64_t *modifiers,
152 struct drm_rockchip_gem_create gem_create;
154 if (format == DRM_FORMAT_NV12) {
155 uint32_t w_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
156 uint32_t h_mbs = DIV_ROUND_UP(ALIGN(height, 16), 16);
158 uint32_t aligned_width = w_mbs * 16;
159 uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);
161 drv_bo_from_format(bo, aligned_width, height, format);
162 bo->total_size = bo->strides[0] * aligned_height + w_mbs * h_mbs * 128;
163 } else if (width <= 2560 &&
164 has_modifier(modifiers, count, DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
165 /* If the caller has decided they can use AFBC, always
167 afbc_bo_from_format(bo, width, height, format);
169 if (!has_modifier(modifiers, count, DRM_FORMAT_MOD_NONE)) {
171 fprintf(stderr, "no usable modifier found\n");
177 * Since the ARM L1 cache line size is 64 bytes, align to that
178 * as a performance optimization. For YV12, the Mali cmem allocator
179 * requires that chroma planes are aligned to 64-bytes, so align the
180 * luma plane to 128 bytes.
182 stride = drv_stride_from_format(format, width, 0);
183 if (format == DRM_FORMAT_YVU420 || format == DRM_FORMAT_YVU420_ANDROID)
184 stride = ALIGN(stride, 128);
186 stride = ALIGN(stride, 64);
188 drv_bo_from_format(bo, stride, height, format);
191 memset(&gem_create, 0, sizeof(gem_create));
192 gem_create.size = bo->total_size;
194 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE, &gem_create);
197 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
203 for (plane = 0; plane < bo->num_planes; plane++)
204 bo->handles[plane].u32 = gem_create.handle;
209 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
212 uint64_t modifiers[] = { DRM_FORMAT_MOD_NONE };
214 return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
215 ARRAY_SIZE(modifiers));
218 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
221 struct drm_rockchip_gem_map_off gem_map;
223 /* We can only map buffers created with SW access flags, which should
224 * have no modifiers (ie, not AFBC). */
225 if (bo->format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
228 memset(&gem_map, 0, sizeof(gem_map));
229 gem_map.handle = bo->handles[0].u32;
231 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET, &gem_map);
233 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
237 data->length = bo->total_size;
239 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
243 static uint32_t rockchip_resolve_format(uint32_t format)
246 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
247 /*HACK: See b/28671744 */
248 return DRM_FORMAT_XBGR8888;
249 case DRM_FORMAT_FLEX_YCbCr_420_888:
250 return DRM_FORMAT_NV12;
256 struct backend backend_rockchip = {
258 .init = rockchip_init,
259 .bo_create = rockchip_bo_create,
260 .bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
261 .bo_destroy = drv_gem_bo_destroy,
262 .bo_import = drv_prime_bo_import,
263 .bo_map = rockchip_bo_map,
264 .resolve_format = rockchip_resolve_format,