1 /*
2 * Copyright (C) 2013 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 #define LOG_TAG "ConsumerIrHal"
17
18 #include <errno.h>
19 #include <malloc.h>
20 #include <string.h>
21 #include <cutils/log.h>
22 #include <hardware/hardware.h>
23 #include <hardware/consumerir.h>
24
25 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
26
27 static const consumerir_freq_range_t consumerir_freqs[] = {
28 {.min = 30000, .max = 30000},
29 {.min = 33000, .max = 33000},
30 {.min = 36000, .max = 36000},
31 {.min = 38000, .max = 38000},
32 {.min = 40000, .max = 40000},
33 {.min = 56000, .max = 56000},
34 };
35
consumerir_transmit(struct consumerir_device * dev __unused,int carrier_freq,const int pattern[],int pattern_len)36 static int consumerir_transmit(struct consumerir_device *dev __unused,
37 int carrier_freq, const int pattern[], int pattern_len)
38 {
39 int total_time = 0;
40 long i;
41
42 for (i = 0; i < pattern_len; i++)
43 total_time += pattern[i];
44
45 /* simulate the time spent transmitting by sleeping */
46 ALOGD("transmit for %d uS at %d Hz", total_time, carrier_freq);
47 usleep(total_time);
48
49 return 0;
50 }
51
consumerir_get_num_carrier_freqs(struct consumerir_device * dev __unused)52 static int consumerir_get_num_carrier_freqs(struct consumerir_device *dev __unused)
53 {
54 return ARRAY_SIZE(consumerir_freqs);
55 }
56
consumerir_get_carrier_freqs(struct consumerir_device * dev __unused,size_t len,consumerir_freq_range_t * ranges)57 static int consumerir_get_carrier_freqs(struct consumerir_device *dev __unused,
58 size_t len, consumerir_freq_range_t *ranges)
59 {
60 size_t to_copy = ARRAY_SIZE(consumerir_freqs);
61
62 to_copy = len < to_copy ? len : to_copy;
63 memcpy(ranges, consumerir_freqs, to_copy * sizeof(consumerir_freq_range_t));
64 return to_copy;
65 }
66
consumerir_close(hw_device_t * dev)67 static int consumerir_close(hw_device_t *dev)
68 {
69 free(dev);
70 return 0;
71 }
72
73 /*
74 * Generic device handling
75 */
consumerir_open(const hw_module_t * module,const char * name,hw_device_t ** device)76 static int consumerir_open(const hw_module_t* module, const char* name,
77 hw_device_t** device)
78 {
79 if (strcmp(name, CONSUMERIR_TRANSMITTER) != 0) {
80 return -EINVAL;
81 }
82 if (device == NULL) {
83 ALOGE("NULL device on open");
84 return -EINVAL;
85 }
86
87 consumerir_device_t *dev = malloc(sizeof(consumerir_device_t));
88 memset(dev, 0, sizeof(consumerir_device_t));
89
90 dev->common.tag = HARDWARE_DEVICE_TAG;
91 dev->common.version = 0;
92 dev->common.module = (struct hw_module_t*) module;
93 dev->common.close = consumerir_close;
94
95 dev->transmit = consumerir_transmit;
96 dev->get_num_carrier_freqs = consumerir_get_num_carrier_freqs;
97 dev->get_carrier_freqs = consumerir_get_carrier_freqs;
98
99 *device = (hw_device_t*) dev;
100 return 0;
101 }
102
103 static struct hw_module_methods_t consumerir_module_methods = {
104 .open = consumerir_open,
105 };
106
107 consumerir_module_t HAL_MODULE_INFO_SYM = {
108 .common = {
109 .tag = HARDWARE_MODULE_TAG,
110 .module_api_version = CONSUMERIR_MODULE_API_VERSION_1_0,
111 .hal_api_version = HARDWARE_HAL_API_VERSION,
112 .id = CONSUMERIR_HARDWARE_MODULE_ID,
113 .name = "Demo IR HAL",
114 .author = "The Android Open Source Project",
115 .methods = &consumerir_module_methods,
116 },
117 };
118