1 /*
2 * Copyright (C) 2008, The Android Open Source Project
3 * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 #include <unistd.h>
19 #include <fcntl.h>
20
21 #include <sys/mman.h>
22 #include <sys/stat.h>
23 #include <sys/types.h>
24 #include <sys/ioctl.h>
25 #include <cutils/properties.h>
26
27 #include <linux/android_pmem.h>
28
29 #include "gr.h"
30 #include "gpu.h"
31 #include "memalloc.h"
32 #include "alloc_controller.h"
33
34 using namespace gralloc;
35
36 int fb_device_open(const hw_module_t* module, const char* name,
37 hw_device_t** device);
38
39 static int gralloc_device_open(const hw_module_t* module, const char* name,
40 hw_device_t** device);
41
42 extern int gralloc_lock(gralloc_module_t const* module,
43 buffer_handle_t handle, int usage,
44 int l, int t, int w, int h,
45 void** vaddr);
46
47 extern int gralloc_lock_ycbcr(gralloc_module_t const* module,
48 buffer_handle_t handle, int usage,
49 int l, int t, int w, int h,
50 struct android_ycbcr *ycbcr);
51
52 extern int gralloc_unlock(gralloc_module_t const* module,
53 buffer_handle_t handle);
54
55 extern int gralloc_register_buffer(gralloc_module_t const* module,
56 buffer_handle_t handle);
57
58 extern int gralloc_unregister_buffer(gralloc_module_t const* module,
59 buffer_handle_t handle);
60
61 extern int gralloc_perform(struct gralloc_module_t const* module,
62 int operation, ... );
63
64 // HAL module methods
65 static struct hw_module_methods_t gralloc_module_methods = {
66 open: gralloc_device_open
67 };
68
69 // HAL module initialize
70 struct private_module_t HAL_MODULE_INFO_SYM = {
71 base: {
72 common: {
73 tag: HARDWARE_MODULE_TAG,
74 module_api_version: GRALLOC_MODULE_API_VERSION_0_2,
75 hal_api_version: 0,
76 id: GRALLOC_HARDWARE_MODULE_ID,
77 name: "Graphics Memory Allocator Module",
78 author: "The Android Open Source Project",
79 methods: &gralloc_module_methods,
80 dso: 0,
81 },
82 registerBuffer: gralloc_register_buffer,
83 unregisterBuffer: gralloc_unregister_buffer,
84 lock: gralloc_lock,
85 unlock: gralloc_unlock,
86 perform: gralloc_perform,
87 lock_ycbcr: gralloc_lock_ycbcr,
88 },
89 framebuffer: 0,
90 fbFormat: 0,
91 flags: 0,
92 numBuffers: 0,
93 bufferMask: 0,
94 lock: PTHREAD_MUTEX_INITIALIZER,
95 currentBuffer: 0,
96 };
97
98 // Open Gralloc device
gralloc_device_open(const hw_module_t * module,const char * name,hw_device_t ** device)99 int gralloc_device_open(const hw_module_t* module, const char* name,
100 hw_device_t** device)
101 {
102 int status = -EINVAL;
103 if (!strcmp(name, GRALLOC_HARDWARE_GPU0)) {
104 const private_module_t* m = reinterpret_cast<const private_module_t*>(
105 module);
106 gpu_context_t *dev;
107 IAllocController* alloc_ctrl = IAllocController::getInstance();
108 dev = new gpu_context_t(m, alloc_ctrl);
109 *device = &dev->common;
110 status = 0;
111 } else {
112 status = fb_device_open(module, name, device);
113 }
114 return status;
115 }
116