| /* |
| * Copyright 2015 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifdef DRV_MEDIATEK |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <xf86drm.h> |
| #include <mediatek_drm.h> |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| static struct supported_combination combos[6] = { |
| {DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE, |
| BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN | |
| BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE, |
| BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | |
| BO_USE_SW_WRITE_OFTEN | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE, |
| BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN | |
| BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE, |
| BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN | |
| BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE, |
| BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | |
| BO_USE_SW_WRITE_OFTEN | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE, |
| BO_USE_LINEAR | BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN | |
| BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| }; |
| |
| static int mediatek_init(struct driver *drv) |
| { |
| drv_insert_combinations(drv, combos, ARRAY_SIZE(combos)); |
| return drv_add_kms_flags(drv); |
| } |
| |
| static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, |
| uint32_t format, uint32_t flags) |
| { |
| int ret; |
| size_t plane; |
| struct drm_mtk_gem_create gem_create; |
| uint32_t bytes_per_pixel = drv_stride_from_format(format, 1, 0); |
| |
| /* |
| * Since the ARM L1 cache line size is 64 bytes, align to that as a |
| * performance optimization. |
| */ |
| width = ALIGN(width, DIV_ROUND_UP(64, bytes_per_pixel)); |
| drv_bo_from_format(bo, width, height, format); |
| |
| memset(&gem_create, 0, sizeof(gem_create)); |
| gem_create.size = bo->total_size; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_MTK_GEM_CREATE failed " |
| "(size=%llu)\n", gem_create.size); |
| return ret; |
| } |
| |
| for (plane = 0; plane < bo->num_planes; plane++) |
| bo->handles[plane].u32 = gem_create.handle; |
| |
| return 0; |
| } |
| |
| static void *mediatek_bo_map(struct bo *bo, struct map_info *data, size_t plane) |
| { |
| int ret; |
| struct drm_mtk_gem_map_off gem_map; |
| |
| memset(&gem_map, 0, sizeof(gem_map)); |
| gem_map.handle = bo->handles[0].u32; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map); |
| if (ret) { |
| fprintf(stderr,"drv: DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n"); |
| return MAP_FAILED; |
| } |
| |
| data->length = bo->total_size; |
| |
| return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| bo->drv->fd, gem_map.offset); |
| } |
| |
| static uint32_t mediatek_resolve_format(uint32_t format) |
| { |
| switch (format) { |
| case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED: |
| /*HACK: See b/28671744 */ |
| return DRM_FORMAT_XBGR8888; |
| case DRM_FORMAT_FLEX_YCbCr_420_888: |
| return DRM_FORMAT_YVU420; |
| default: |
| return format; |
| } |
| } |
| |
| struct backend backend_mediatek = |
| { |
| .name = "mediatek", |
| .init = mediatek_init, |
| .bo_create = mediatek_bo_create, |
| .bo_destroy = drv_gem_bo_destroy, |
| .bo_import = drv_prime_bo_import, |
| .bo_map = mediatek_bo_map, |
| .resolve_format = mediatek_resolve_format, |
| }; |
| |
| #endif |