1 /*
2  * Copyright (C) 2012 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 #include <errno.h>
17 #include <malloc.h>
18 #include <string.h>
19 
20 #include <log/log.h>
21 
22 #include <hardware/hardware.h>
23 #include <hardware/nfc.h>
24 
25 /*
26  * NCI HAL method implementations. These must be overriden
27  */
28 static int hal_open(const struct nfc_nci_device* /*dev*/,
29                     nfc_stack_callback_t* /*p_cback*/,
30                     nfc_stack_data_callback_t* /*p_data_cback*/) {
31     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
32     return 0;
33 }
34 
35 static int hal_write(const struct nfc_nci_device* /*dev*/,
36                      uint16_t /*data_len*/, const uint8_t* /*p_data*/) {
37     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
38     return 0;
39 }
40 
41 static int hal_core_initialized(const struct nfc_nci_device* /*dev*/,
42                                 uint8_t* /*p_core_init_rsp_params*/) {
43     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
44     return 0;
45 }
46 
47 static int hal_pre_discover(const struct nfc_nci_device* /*dev*/) {
48     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
49     return 0;
50 }
51 
52 static int hal_close(const struct nfc_nci_device* /*dev*/) {
53     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
54     return 0;
55 }
56 
57 static int hal_control_granted (const struct nfc_nci_device* /*p_dev*/)
58 {
59     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
60     return 0;
61 }
62 
63 
64 static int hal_power_cycle (const struct nfc_nci_device* /*p_dev*/)
65 {
66     ALOGE("NFC-NCI HAL: %s", __FUNCTION__);
67     return 0;
68 }
69 
70 /*
71  * Generic device handling below - can generally be left unchanged.
72  */
73 /* Close an opened nfc device instance */
74 static int nfc_close(hw_device_t *dev) {
75     free(dev);
76     return 0;
77 }
78 
79 static int nfc_open(const hw_module_t* module, const char* name,
80                     hw_device_t** device) {
81     if (strcmp(name, NFC_NCI_CONTROLLER) == 0) {
82         nfc_nci_device_t *dev = static_cast<nfc_nci_device_t*>(
83                 calloc(1, sizeof(nfc_nci_device_t)));
84 
85         dev->common.tag = HARDWARE_DEVICE_TAG;
86         dev->common.version = 0x00010000; // [31:16] major, [15:0] minor
87         dev->common.module = (struct hw_module_t*) module;
88         dev->common.close = nfc_close;
89 
90         // NCI HAL method pointers
91         dev->open = hal_open;
92         dev->write = hal_write;
93         dev->core_initialized = hal_core_initialized;
94         dev->pre_discover = hal_pre_discover;
95         dev->close = hal_close;
96         dev->control_granted = hal_control_granted;
97         dev->power_cycle = hal_power_cycle;
98 
99         *device = (hw_device_t*) dev;
100 
101         return 0;
102     } else {
103         return -EINVAL;
104     }
105 }
106 
107 
108 static struct hw_module_methods_t nfc_module_methods = {
109     .open = nfc_open,
110 };
111 
112 struct nfc_nci_module_t HAL_MODULE_INFO_SYM = {
113     .common = {
114         .tag = HARDWARE_MODULE_TAG,
115         .module_api_version = 0x0100, // [15:8] major, [7:0] minor (1.0)
116         .hal_api_version = 0x00, // 0 is only valid value
117         .id = NFC_NCI_HARDWARE_MODULE_ID,
118         .name = "Default NFC NCI HW HAL",
119         .author = "The Android Open Source Project",
120         .methods = &nfc_module_methods,
121     },
122 };
123