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
34using namespace gralloc;
35
36int fb_device_open(const hw_module_t* module, const char* name,
37                   hw_device_t** device);
38
39static int gralloc_device_open(const hw_module_t* module, const char* name,
40                               hw_device_t** device);
41
42extern 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
47extern 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
52extern int gralloc_unlock(gralloc_module_t const* module,
53                          buffer_handle_t handle);
54
55extern int gralloc_register_buffer(gralloc_module_t const* module,
56                                   buffer_handle_t handle);
57
58extern int gralloc_unregister_buffer(gralloc_module_t const* module,
59                                     buffer_handle_t handle);
60
61extern int gralloc_perform(struct gralloc_module_t const* module,
62                           int operation, ... );
63
64// HAL module methods
65static struct hw_module_methods_t gralloc_module_methods = {
66    open: gralloc_device_open
67};
68
69// HAL module initialize
70struct 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
99int 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