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_handle.h>
29 #include <hardware/gralloc.h>
30
31 namespace android {
32
33 #ifdef USE_DRM_GENERIC_IMPORTER
34 // static
CreateInstance(DrmResources * drm)35 Importer *Importer::CreateInstance(DrmResources *drm) {
36 DrmGenericImporter *importer = new DrmGenericImporter(drm);
37 if (!importer)
38 return NULL;
39
40 int ret = importer->Init();
41 if (ret) {
42 ALOGE("Failed to initialize the nv importer %d", ret);
43 delete importer;
44 return NULL;
45 }
46 return importer;
47 }
48 #endif
49
DrmGenericImporter(DrmResources * drm)50 DrmGenericImporter::DrmGenericImporter(DrmResources *drm) : drm_(drm) {
51 }
52
~DrmGenericImporter()53 DrmGenericImporter::~DrmGenericImporter() {
54 }
55
Init()56 int DrmGenericImporter::Init() {
57 int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
58 (const hw_module_t **)&gralloc_);
59 if (ret) {
60 ALOGE("Failed to open gralloc module");
61 return ret;
62 }
63 return 0;
64 }
65
ConvertHalFormatToDrm(uint32_t hal_format)66 uint32_t DrmGenericImporter::ConvertHalFormatToDrm(uint32_t hal_format) {
67 switch (hal_format) {
68 case HAL_PIXEL_FORMAT_RGB_888:
69 return DRM_FORMAT_BGR888;
70 case HAL_PIXEL_FORMAT_BGRA_8888:
71 return DRM_FORMAT_ARGB8888;
72 case HAL_PIXEL_FORMAT_RGBX_8888:
73 return DRM_FORMAT_XBGR8888;
74 case HAL_PIXEL_FORMAT_RGBA_8888:
75 return DRM_FORMAT_ABGR8888;
76 case HAL_PIXEL_FORMAT_RGB_565:
77 return DRM_FORMAT_BGR565;
78 case HAL_PIXEL_FORMAT_YV12:
79 return DRM_FORMAT_YVU420;
80 default:
81 ALOGE("Cannot convert hal format to drm format %u", hal_format);
82 return -EINVAL;
83 }
84 }
85
ImportBuffer(buffer_handle_t handle,hwc_drm_bo_t * bo)86 int DrmGenericImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
87 gralloc_drm_handle_t *gr_handle = gralloc_drm_handle(handle);
88 if (!gr_handle)
89 return -EINVAL;
90
91 uint32_t gem_handle;
92 int ret = drmPrimeFDToHandle(drm_->fd(), gr_handle->prime_fd, &gem_handle);
93 if (ret) {
94 ALOGE("failed to import prime fd %d ret=%d", gr_handle->prime_fd, ret);
95 return ret;
96 }
97
98 memset(bo, 0, sizeof(hwc_drm_bo_t));
99 bo->width = gr_handle->width;
100 bo->height = gr_handle->height;
101 bo->format = ConvertHalFormatToDrm(gr_handle->format);
102 bo->pitches[0] = gr_handle->stride;
103 bo->gem_handles[0] = gem_handle;
104 bo->offsets[0] = 0;
105
106 ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
107 bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
108 if (ret) {
109 ALOGE("could not create drm fb %d", ret);
110 return ret;
111 }
112
113 return ret;
114 }
115
ReleaseBuffer(hwc_drm_bo_t * bo)116 int DrmGenericImporter::ReleaseBuffer(hwc_drm_bo_t *bo) {
117 if (bo->fb_id)
118 if (drmModeRmFB(drm_->fd(), bo->fb_id))
119 ALOGE("Failed to rm fb");
120
121 struct drm_gem_close gem_close;
122 memset(&gem_close, 0, sizeof(gem_close));
123 int num_gem_handles = sizeof(bo->gem_handles) / sizeof(bo->gem_handles[0]);
124 for (int i = 0; i < num_gem_handles; i++) {
125 if (!bo->gem_handles[i])
126 continue;
127
128 gem_close.handle = bo->gem_handles[i];
129 int ret = drmIoctl(drm_->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
130 if (ret)
131 ALOGE("Failed to close gem handle %d %d", i, ret);
132 else
133 bo->gem_handles[i] = 0;
134 }
135 return 0;
136 }
137
138 #ifdef USE_DRM_GENERIC_IMPORTER
CreateInstance(DrmResources *)139 std::unique_ptr<Planner> Planner::CreateInstance(DrmResources *) {
140 std::unique_ptr<Planner> planner(new Planner);
141 planner->AddStage<PlanStageGreedy>();
142 return planner;
143 }
144 #endif
145 }
146