1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "hwc-platform-drm-generic"
18
19 #include "drmresources.h"
20 #include "platform.h"
21 #include "platformdrmgeneric.h"
22
23 #include <drm/drm_fourcc.h>
24 #include <xf86drm.h>
25 #include <xf86drmMode.h>
26
27 #include <cutils/log.h>
28 #include <gralloc_drm.h>
29 #include <gralloc_drm_priv.h>
30 #include <gralloc_drm_handle.h>
31 #include <hardware/gralloc.h>
32
33 namespace android {
34
35 #ifdef USE_DRM_GENERIC_IMPORTER
36 // static
CreateInstance(DrmResources * drm)37 Importer *Importer::CreateInstance(DrmResources *drm) {
38 DrmGenericImporter *importer = new DrmGenericImporter(drm);
39 if (!importer)
40 return NULL;
41
42 int ret = importer->Init();
43 if (ret) {
44 ALOGE("Failed to initialize the nv importer %d", ret);
45 delete importer;
46 return NULL;
47 }
48 return importer;
49 }
50 #endif
51
DrmGenericImporter(DrmResources * drm)52 DrmGenericImporter::DrmGenericImporter(DrmResources *drm) : drm_(drm) {
53 }
54
~DrmGenericImporter()55 DrmGenericImporter::~DrmGenericImporter() {
56 }
57
Init()58 int DrmGenericImporter::Init() {
59 int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
60 (const hw_module_t **)&gralloc_);
61 if (ret) {
62 ALOGE("Failed to open gralloc module");
63 return ret;
64 }
65 return 0;
66 }
67
ConvertHalFormatToDrm(uint32_t hal_format)68 uint32_t DrmGenericImporter::ConvertHalFormatToDrm(uint32_t hal_format) {
69 switch (hal_format) {
70 case HAL_PIXEL_FORMAT_RGB_888:
71 return DRM_FORMAT_BGR888;
72 case HAL_PIXEL_FORMAT_BGRA_8888:
73 return DRM_FORMAT_ARGB8888;
74 case HAL_PIXEL_FORMAT_RGBX_8888:
75 return DRM_FORMAT_XBGR8888;
76 case HAL_PIXEL_FORMAT_RGBA_8888:
77 return DRM_FORMAT_ABGR8888;
78 case HAL_PIXEL_FORMAT_RGB_565:
79 return DRM_FORMAT_BGR565;
80 case HAL_PIXEL_FORMAT_YV12:
81 return DRM_FORMAT_YVU420;
82 default:
83 ALOGE("Cannot convert hal format to drm format %u", hal_format);
84 return -EINVAL;
85 }
86 }
87
ImportBuffer(buffer_handle_t handle,hwc_drm_bo_t * bo)88 int DrmGenericImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
89 gralloc_drm_handle_t *gr_handle = gralloc_drm_handle(handle);
90 if (!gr_handle)
91 return -EINVAL;
92
93 struct gralloc_drm_bo_t *gralloc_bo = gr_handle->data;
94 if (!gralloc_bo) {
95 ALOGE("Could not get drm bo from handle");
96 return -EINVAL;
97 }
98
99 uint32_t gem_handle;
100 int ret = drmPrimeFDToHandle(drm_->fd(), gr_handle->prime_fd, &gem_handle);
101 if (ret) {
102 ALOGE("failed to import prime fd %d ret=%d", gr_handle->prime_fd, ret);
103 return ret;
104 }
105
106 memset(bo, 0, sizeof(hwc_drm_bo_t));
107 bo->width = gr_handle->width;
108 bo->height = gr_handle->height;
109 bo->format = ConvertHalFormatToDrm(gr_handle->format);
110 bo->pitches[0] = gr_handle->stride;
111 bo->gem_handles[0] = gem_handle;
112 bo->offsets[0] = 0;
113
114 ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
115 bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
116 if (ret) {
117 ALOGE("could not create drm fb %d", ret);
118 return ret;
119 }
120
121 return ret;
122 }
123
ReleaseBuffer(hwc_drm_bo_t * bo)124 int DrmGenericImporter::ReleaseBuffer(hwc_drm_bo_t *bo) {
125 if (bo->fb_id)
126 if (drmModeRmFB(drm_->fd(), bo->fb_id))
127 ALOGE("Failed to rm fb");
128
129 struct drm_gem_close gem_close;
130 memset(&gem_close, 0, sizeof(gem_close));
131 int num_gem_handles = sizeof(bo->gem_handles) / sizeof(bo->gem_handles[0]);
132 for (int i = 0; i < num_gem_handles; i++) {
133 if (!bo->gem_handles[i])
134 continue;
135
136 gem_close.handle = bo->gem_handles[i];
137 int ret = drmIoctl(drm_->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
138 if (ret)
139 ALOGE("Failed to close gem handle %d %d", i, ret);
140 else
141 bo->gem_handles[i] = 0;
142 }
143 return 0;
144 }
145
146 #ifdef USE_DRM_GENERIC_IMPORTER
CreateInstance(DrmResources *)147 std::unique_ptr<Planner> Planner::CreateInstance(DrmResources *) {
148 std::unique_ptr<Planner> planner(new Planner);
149 planner->AddStage<PlanStageGreedy>();
150 return planner;
151 }
152 #endif
153 }
154