1 /*
2 * Copyright (C) 2008, The Android Open Source Project
3 * Copyright (c) 2011-2012, 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 "gr.h"
28 #include "gpu.h"
29 #include "memalloc.h"
30 #include "alloc_controller.h"
31
32 using namespace gralloc;
33
34 int fb_device_open(const hw_module_t* module, const char* name,
35 hw_device_t** device);
36
37 static int gralloc_device_open(const hw_module_t* module, const char* name,
38 hw_device_t** device);
39
40 extern int gralloc_lock(gralloc_module_t const* module,
41 buffer_handle_t handle, int usage,
42 int l, int t, int w, int h,
43 void** vaddr);
44
45 extern int gralloc_lock_ycbcr(gralloc_module_t const* module,
46 buffer_handle_t handle, int usage,
47 int l, int t, int w, int h,
48 struct android_ycbcr *ycbcr);
49
50 extern int gralloc_unlock(gralloc_module_t const* module,
51 buffer_handle_t handle);
52
53 extern int gralloc_register_buffer(gralloc_module_t const* module,
54 buffer_handle_t handle);
55
56 extern int gralloc_unregister_buffer(gralloc_module_t const* module,
57 buffer_handle_t handle);
58
59 extern int gralloc_perform(struct gralloc_module_t const* module,
60 int operation, ... );
61
62 // HAL module methods
63 static struct hw_module_methods_t gralloc_module_methods = {
64 open: gralloc_device_open
65 };
66
67 // HAL module initialize
68 struct private_module_t HAL_MODULE_INFO_SYM = {
69 base: {
70 common: {
71 tag: HARDWARE_MODULE_TAG,
72 version_major: 1,
73 version_minor: 0,
74 id: GRALLOC_HARDWARE_MODULE_ID,
75 name: "Graphics Memory Allocator Module",
76 author: "The Android Open Source Project",
77 methods: &gralloc_module_methods,
78 dso: 0,
79 reserved: {0},
80 },
81 registerBuffer: gralloc_register_buffer,
82 unregisterBuffer: gralloc_unregister_buffer,
83 lock: gralloc_lock,
84 unlock: gralloc_unlock,
85 perform: gralloc_perform,
86 lock_ycbcr: gralloc_lock_ycbcr,
87 },
88 framebuffer: 0,
89 fbFormat: 0,
90 flags: 0,
91 numBuffers: 0,
92 bufferMask: 0,
93 lock: PTHREAD_MUTEX_INITIALIZER,
94 currentBuffer: 0,
95 };
96
97 // Open Gralloc device
gralloc_device_open(const hw_module_t * module,const char * name,hw_device_t ** device)98 int gralloc_device_open(const hw_module_t* module, const char* name,
99 hw_device_t** device)
100 {
101 int status = -EINVAL;
102 if (!strcmp(name, GRALLOC_HARDWARE_GPU0)) {
103 const private_module_t* m = reinterpret_cast<const private_module_t*>(
104 module);
105 gpu_context_t *dev;
106 IAllocController* alloc_ctrl = IAllocController::getInstance();
107 dev = new gpu_context_t(m, alloc_ctrl);
108 *device = &dev->common;
109 status = 0;
110 } else {
111 status = fb_device_open(module, name, device);
112 }
113 return status;
114 }
115