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_RGB565,
23 DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888,
24 DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID };
26 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, uint32_t format)
28 /* We've restricted ourselves to four bytes per pixel. */
29 const uint32_t pixel_size = 4;
31 const uint32_t clump_width = 4;
32 const uint32_t clump_height = 4;
36 const uint32_t block_width = 4 * clump_width;
37 const uint32_t block_height = 4 * clump_height;
39 const uint32_t block_width = 8 * clump_width;
40 const uint32_t block_height = 2 * clump_height;
43 const uint32_t header_block_size = 16;
44 const uint32_t body_block_size = block_width * block_height * pixel_size;
45 const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
46 const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
47 const uint32_t total_blocks = width_in_blocks * height_in_blocks;
49 const uint32_t header_plane_size = total_blocks * header_block_size;
50 const uint32_t body_plane_size = total_blocks * body_block_size;
52 /* GPU requires 64 bytes, but EGL import code expects 1024 byte
53 * alignement for the body plane. */
54 const uint32_t body_plane_alignment = 1024;
56 const uint32_t body_plane_offset = ALIGN(header_plane_size, body_plane_alignment);
57 const uint32_t total_size = body_plane_offset + body_plane_size;
59 bo->strides[0] = width_in_blocks * block_width * pixel_size;
60 bo->sizes[0] = total_size;
63 bo->total_size = total_size;
65 bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;
70 static int rockchip_add_kms_item(struct driver *drv, const struct kms_item *item)
75 struct combination *combo;
76 struct format_metadata metadata;
78 for (i = 0; i < drv->backend->combos.size; i++) {
79 combo = &drv->backend->combos.data[i];
80 if (combo->format == item->format) {
81 if (item->modifier == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
82 flags = BO_USE_RENDERING | BO_USE_SCANOUT | BO_USE_TEXTURE;
83 metadata.modifier = item->modifier;
85 metadata.priority = 2;
87 ret = drv_add_combination(drv, item[i].format, &metadata, flags);
91 combo->usage |= item->usage;
99 static int rockchip_init(struct driver *drv)
102 uint32_t i, num_items;
103 struct kms_item *items;
104 struct format_metadata metadata;
107 metadata.priority = 1;
108 metadata.modifier = DRM_FORMAT_MOD_NONE;
110 ret = drv_add_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats), &metadata,
115 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
116 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
118 items = drv_query_kms(drv, &num_items);
119 if (!items || !num_items)
122 for (i = 0; i < num_items; i++) {
123 ret = rockchip_add_kms_item(drv, &items[i]);
134 static bool has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier)
138 for (i = 0; i < count; i++)
139 if (list[i] == modifier)
145 static int rockchip_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
146 uint32_t format, const uint64_t *modifiers,
151 struct drm_rockchip_gem_create gem_create;
153 if (format == DRM_FORMAT_NV12) {
154 uint32_t w_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
155 uint32_t h_mbs = DIV_ROUND_UP(ALIGN(height, 16), 16);
157 uint32_t aligned_width = w_mbs * 16;
158 uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);
160 drv_bo_from_format(bo, aligned_width, height, format);
161 bo->total_size = bo->strides[0] * aligned_height + w_mbs * h_mbs * 128;
162 } else if (width <= 2560 &&
163 has_modifier(modifiers, count, DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
164 /* If the caller has decided they can use AFBC, always
166 afbc_bo_from_format(bo, width, height, format);
168 if (!has_modifier(modifiers, count, DRM_FORMAT_MOD_NONE)) {
170 fprintf(stderr, "no usable modifier found\n");
176 * Since the ARM L1 cache line size is 64 bytes, align to that
177 * as a performance optimization. For YV12, the Mali cmem allocator
178 * requires that chroma planes are aligned to 64-bytes, so align the
179 * luma plane to 128 bytes.
181 stride = drv_stride_from_format(format, width, 0);
182 if (format == DRM_FORMAT_YVU420 || format == DRM_FORMAT_YVU420_ANDROID)
183 stride = ALIGN(stride, 128);
185 stride = ALIGN(stride, 64);
187 drv_bo_from_format(bo, stride, height, format);
190 memset(&gem_create, 0, sizeof(gem_create));
191 gem_create.size = bo->total_size;
193 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE, &gem_create);
196 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
202 for (plane = 0; plane < bo->num_planes; plane++)
203 bo->handles[plane].u32 = gem_create.handle;
208 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
211 uint64_t modifiers[] = { DRM_FORMAT_MOD_NONE };
213 return rockchip_bo_create_with_modifiers(bo, width, height, format, modifiers,
214 ARRAY_SIZE(modifiers));
217 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
220 struct drm_rockchip_gem_map_off gem_map;
222 /* We can only map buffers created with SW access flags, which should
223 * have no modifiers (ie, not AFBC). */
224 if (bo->format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
227 memset(&gem_map, 0, sizeof(gem_map));
228 gem_map.handle = bo->handles[0].u32;
230 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET, &gem_map);
232 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
236 data->length = bo->total_size;
238 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->drv->fd,
242 static uint32_t rockchip_resolve_format(uint32_t format)
245 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
246 /*HACK: See b/28671744 */
247 return DRM_FORMAT_XBGR8888;
248 case DRM_FORMAT_FLEX_YCbCr_420_888:
249 return DRM_FORMAT_NV12;
255 struct backend backend_rockchip = {
257 .init = rockchip_init,
258 .bo_create = rockchip_bo_create,
259 .bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
260 .bo_destroy = drv_gem_bo_destroy,
261 .bo_import = drv_prime_bo_import,
262 .bo_map = rockchip_bo_map,
263 .resolve_format = rockchip_resolve_format,