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.
15 #include <rockchip_drm.h>
21 static const uint32_t supported_formats[] = {
22 DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_NV12,
23 DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888,
24 DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID
27 static int afbc_bo_from_format(struct bo *bo, uint32_t width, uint32_t height,
30 /* We've restricted ourselves to four bytes per pixel. */
31 const uint32_t pixel_size = 4;
33 const uint32_t clump_width = 4;
34 const uint32_t clump_height = 4;
38 const uint32_t block_width = 4 * clump_width;
39 const uint32_t block_height = 4 * clump_height;
41 const uint32_t block_width = 8 * clump_width;
42 const uint32_t block_height = 2 * clump_height;
45 const uint32_t header_block_size = 16;
46 const uint32_t body_block_size = block_width * block_height * pixel_size;
47 const uint32_t width_in_blocks = DIV_ROUND_UP(width, block_width);
48 const uint32_t height_in_blocks = DIV_ROUND_UP(height, block_height);
49 const uint32_t total_blocks = width_in_blocks * height_in_blocks;
51 const uint32_t header_plane_size = total_blocks * header_block_size;
52 const uint32_t body_plane_size = total_blocks * body_block_size;
54 /* GPU requires 64 bytes, but EGL import code expects 1024 byte
55 * alignement for the body plane. */
56 const uint32_t body_plane_alignment = 1024;
58 const uint32_t body_plane_offset =
59 ALIGN(header_plane_size, body_plane_alignment);
60 const uint32_t total_size =
61 body_plane_offset + body_plane_size;
63 bo->strides[0] = width_in_blocks * block_width * pixel_size;
64 bo->sizes[0] = total_size;
67 bo->total_size = total_size;
69 bo->format_modifiers[0] = DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC;
74 static int rockchip_add_kms_item(struct driver *drv, const struct kms_item *item)
79 struct combination *combo;
80 struct format_metadata metadata;
82 for (i = 0; i < drv->backend->combos.size; i++) {
83 combo = &drv->backend->combos.data[i];
84 if (combo->format == item->format) {
86 DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC) {
87 flags = BO_USE_RENDERING | BO_USE_SCANOUT |
89 metadata.modifier = item->modifier;
91 metadata.priority = 2;
93 ret = drv_add_combination(drv, item[i].format,
98 combo->usage |= item->usage;
106 static int rockchip_init(struct driver *drv)
109 uint32_t i, num_items;
110 struct kms_item *items;
111 struct format_metadata metadata;
114 metadata.priority = 1;
115 metadata.modifier = DRM_FORMAT_MOD_NONE;
117 ret = drv_add_combinations(drv, supported_formats,
118 ARRAY_SIZE(supported_formats), &metadata,
123 drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata,
124 BO_USE_CURSOR | BO_USE_SCANOUT);
125 drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata,
126 BO_USE_CURSOR | BO_USE_SCANOUT);
128 items = drv_query_kms(drv, &num_items);
129 if (!items || !num_items)
132 for (i = 0; i < num_items; i++) {
133 ret = rockchip_add_kms_item(drv, &items[i]);
144 static bool has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier)
148 for (i = 0; i < count; i++)
149 if (list[i] == modifier)
155 static int rockchip_bo_create_with_modifiers(struct bo *bo,
156 uint32_t width, uint32_t height,
158 const uint64_t *modifiers,
163 struct drm_rockchip_gem_create gem_create;
165 if (format == DRM_FORMAT_NV12) {
166 uint32_t w_mbs = DIV_ROUND_UP(ALIGN(width, 16), 16);
167 uint32_t h_mbs = DIV_ROUND_UP(ALIGN(height, 16), 16);
169 uint32_t aligned_width = w_mbs * 16;
170 uint32_t aligned_height = DIV_ROUND_UP(h_mbs * 16 * 3, 2);
172 drv_bo_from_format(bo, aligned_width, height, format);
173 bo->total_size = bo->strides[0] * aligned_height
174 + w_mbs * h_mbs * 128;
175 } else if (width <= 2560 &&
176 has_modifier(modifiers, count,
177 DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)) {
178 /* If the caller has decided they can use AFBC, always
180 afbc_bo_from_format(bo, width, height, format);
182 if (!has_modifier(modifiers, count, DRM_FORMAT_MOD_NONE)) {
184 fprintf(stderr, "no usable modifier found\n");
190 * Since the ARM L1 cache line size is 64 bytes, align to that
191 * as a performance optimization.
193 stride = drv_stride_from_format(format, width, 0);
194 stride = ALIGN(stride, 64);
195 drv_bo_from_format(bo, stride, height, format);
198 memset(&gem_create, 0, sizeof(gem_create));
199 gem_create.size = bo->total_size;
201 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE,
205 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
206 "(size=%llu)\n", gem_create.size);
210 for (plane = 0; plane < bo->num_planes; plane++)
211 bo->handles[plane].u32 = gem_create.handle;
216 static int rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height,
217 uint32_t format, uint32_t flags)
219 uint64_t modifiers[] = { DRM_FORMAT_MOD_NONE };
221 return rockchip_bo_create_with_modifiers(bo, width, height, format,
222 modifiers, ARRAY_SIZE(modifiers));
225 static void *rockchip_bo_map(struct bo *bo, struct map_info *data, size_t plane)
228 struct drm_rockchip_gem_map_off gem_map;
230 /* We can only map buffers created with SW access flags, which should
231 * have no modifiers (ie, not AFBC). */
232 if (bo->format_modifiers[0] == DRM_FORMAT_MOD_CHROMEOS_ROCKCHIP_AFBC)
235 memset(&gem_map, 0, sizeof(gem_map));
236 gem_map.handle = bo->handles[0].u32;
238 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET,
242 "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
246 data->length = bo->total_size;
248 return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
249 bo->drv->fd, gem_map.offset);
252 static uint32_t rockchip_resolve_format(uint32_t format)
255 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
256 /*HACK: See b/28671744 */
257 return DRM_FORMAT_XBGR8888;
258 case DRM_FORMAT_FLEX_YCbCr_420_888:
259 return DRM_FORMAT_NV12;
265 struct backend backend_rockchip =
268 .init = rockchip_init,
269 .bo_create = rockchip_bo_create,
270 .bo_create_with_modifiers = rockchip_bo_create_with_modifiers,
271 .bo_destroy = drv_gem_bo_destroy,
272 .bo_import = drv_prime_bo_import,
273 .bo_map = rockchip_bo_map,
274 .resolve_format = rockchip_resolve_format,