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 .validateBufferSize = NULL,
88 .getTransportSize = NULL,
89 },
90 .framebuffer = 0,
91 .fbFormat = 0,
92 .flags = 0,
93 .numBuffers = 0,
94 .bufferMask = 0,
95 .lock = PTHREAD_MUTEX_INITIALIZER,
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 if(!dev)
110 return status;
111
112 *device = &dev->common;
113 status = 0;
114 } else {
115 status = fb_device_open(module, name, device);
116 }
117 return status;
118 }
119