1 /******************************************************************************
2 *
3 * Copyright (C) 1999-2012 Broadcom Corporation
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
19
20 #define LOG_TAG "NfcNciHal"
21 #include "OverrideLog.h"
22 #include <errno.h>
23 #include <hardware/hardware.h>
24 #include <hardware/nfc.h>
25 #include "HalAdaptation.h"
26
27
28 /*********************************
29 * NCI HAL method implementations.
30 *********************************/
31
32
hal_open(const struct nfc_nci_device * p_dev,nfc_stack_callback_t * p_hal_cback,nfc_stack_data_callback_t * p_hal_data_callback)33 static int hal_open (const struct nfc_nci_device *p_dev, nfc_stack_callback_t *p_hal_cback, nfc_stack_data_callback_t *p_hal_data_callback)
34 {
35 int retval = 0;
36 bcm2079x_dev_t *dev = (bcm2079x_dev_t*) p_dev;
37
38 retval = HaiOpen (dev, p_hal_cback, p_hal_data_callback);
39 return retval;
40 }
41
42
hal_write(const struct nfc_nci_device * p_dev,uint16_t data_len,const uint8_t * p_data)43 static int hal_write (const struct nfc_nci_device *p_dev,
44 uint16_t data_len, const uint8_t *p_data)
45 {
46 int retval = 0;
47 bcm2079x_dev_t* dev = (bcm2079x_dev_t*) p_dev;
48
49 retval = HaiWrite (dev, data_len, p_data);
50 return retval;
51 }
52
53
hal_core_initialized(const struct nfc_nci_device * p_dev,uint8_t * p_core_init_rsp_params)54 static int hal_core_initialized (const struct nfc_nci_device *p_dev,
55 uint8_t* p_core_init_rsp_params)
56 {
57 int retval = 0;
58 bcm2079x_dev_t* dev = (bcm2079x_dev_t*) p_dev;
59
60 retval = HaiCoreInitialized (dev, p_core_init_rsp_params);
61 return retval;
62 }
63
64
hal_pre_discover(const struct nfc_nci_device * p_dev)65 static int hal_pre_discover (const struct nfc_nci_device *p_dev)
66 {
67 int retval = 0;
68 bcm2079x_dev_t* dev = (bcm2079x_dev_t*) p_dev;
69
70 retval = HaiPreDiscover (dev);
71 return retval;
72 }
73
74
hal_close(const struct nfc_nci_device * p_dev)75 static int hal_close (const struct nfc_nci_device *p_dev)
76 {
77 int retval = 0;
78 bcm2079x_dev_t* dev = (bcm2079x_dev_t*) p_dev;
79
80 retval = HaiClose (dev);
81 return retval;
82 }
83
84
hal_control_granted(const struct nfc_nci_device * p_dev)85 static int hal_control_granted (const struct nfc_nci_device *p_dev)
86 {
87 int retval = 0;
88 bcm2079x_dev_t* dev = (bcm2079x_dev_t*) p_dev;
89
90 retval = HaiControlGranted (dev);
91 return retval;
92 }
93
94
hal_power_cycle(const struct nfc_nci_device * p_dev)95 static int hal_power_cycle (const struct nfc_nci_device *p_dev)
96 {
97 int retval = 0;
98 bcm2079x_dev_t* dev = (bcm2079x_dev_t*) p_dev;
99
100 retval = HaiPowerCycle (dev);
101 return retval;
102 }
103
104
105 /*************************************
106 * Generic device handling.
107 *************************************/
108
109
110 /* Close an opened nfc device instance */
nfc_close(hw_device_t * dev)111 static int nfc_close (hw_device_t *dev)
112 {
113 int retval = 0;
114 free (dev);
115 retval = HaiTerminateLibrary ();
116 return retval;
117 }
118
119
nfc_open(const hw_module_t * module,const char * name,hw_device_t ** device)120 static int nfc_open (const hw_module_t* module, const char* name, hw_device_t** device)
121 {
122 ALOGD ("%s: enter; name=%s", __FUNCTION__, name);
123 int retval = 0; //0 is ok; -1 is error
124
125 if (strcmp (name, NFC_NCI_CONTROLLER) == 0)
126 {
127 bcm2079x_dev_t *dev = calloc (1, sizeof(bcm2079x_dev_t));
128
129 // Common hw_device_t fields
130 dev->nci_device.common.tag = HARDWARE_DEVICE_TAG;
131 dev->nci_device.common.version = 0x00010000; // [31:16] major, [15:0] minor
132 dev->nci_device.common.module = (struct hw_module_t*) module;
133 dev->nci_device.common.close = nfc_close;
134
135 // NCI HAL method pointers
136 dev->nci_device.open = hal_open;
137 dev->nci_device.write = hal_write;
138 dev->nci_device.core_initialized = hal_core_initialized;
139 dev->nci_device.pre_discover = hal_pre_discover;
140 dev->nci_device.close = hal_close;
141 dev->nci_device.control_granted = hal_control_granted;
142 dev->nci_device.power_cycle = hal_power_cycle;
143
144 // Copy in
145 *device = (hw_device_t*) dev;
146
147 retval = HaiInitializeLibrary (dev);
148 }
149 else
150 {
151 retval = -EINVAL;
152 }
153 ALOGD ("%s: exit %d", __FUNCTION__, retval);
154 return retval;
155 }
156
157
158 static struct hw_module_methods_t nfc_module_methods =
159 {
160 .open = nfc_open,
161 };
162
163
164 struct nfc_nci_module_t HAL_MODULE_INFO_SYM =
165 {
166 .common =
167 {
168 .tag = HARDWARE_MODULE_TAG, .module_api_version = 0x0100, // [15:8] major, [7:0] minor (1.0)
169 .hal_api_version = 0x00, // 0 is only valid value
170 .id = NFC_NCI_HARDWARE_MODULE_ID,
171 .name = "Default NFC NCI HW HAL",
172 .author = "The Android Open Source Project",
173 .methods = &nfc_module_methods,
174 },
175 };
176