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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "ConsumerIrHal"
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <cutils/log.h>
#include <hardware/hardware.h>
#include <hardware/consumerir.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
static const consumerir_freq_range_t consumerir_freqs[] = {
{.min = 30000, .max = 30000},
{.min = 33000, .max = 33000},
{.min = 36000, .max = 36000},
{.min = 38000, .max = 38000},
{.min = 40000, .max = 40000},
{.min = 56000, .max = 56000},
};
int fd = 0;
static int consumerir_transmit(struct consumerir_device *dev,
int carrier_freq, int pattern[], int pattern_len)
{
int strlen;
int i;
char buffer[1024];
memset(buffer, 0, 1024);
/* write the header */
strlen = sprintf(buffer, "%d,", carrier_freq);
/* calculate factor of conversion from microseconds to pulses */
float factor = 1000000 / carrier_freq;
/* write out the timing pattern */
for (i = 0; i < pattern_len; i++)
{
strlen += sprintf(buffer + strlen, "%d,", (int) (pattern[i]/factor));
}
buffer[strlen - 1] = 0;
write(fd, buffer, strlen - 1);
return 0;
}
static int consumerir_get_num_carrier_freqs(struct consumerir_device *dev)
{
return ARRAY_SIZE(consumerir_freqs);
}
static int consumerir_get_carrier_freqs(struct consumerir_device *dev,
size_t len, consumerir_freq_range_t *ranges)
{
size_t to_copy = ARRAY_SIZE(consumerir_freqs);
to_copy = len < to_copy ? len : to_copy;
memcpy(ranges, consumerir_freqs, to_copy * sizeof(consumerir_freq_range_t));
return to_copy;
}
static int consumerir_close(hw_device_t *dev)
{
free(dev);
close(fd);
return 0;
}
/*
* Generic device handling
*/
static int consumerir_open(const hw_module_t* module, const char* name,
hw_device_t** device)
{
if (strcmp(name, CONSUMERIR_TRANSMITTER) != 0) {
return -EINVAL;
}
if (device == NULL) {
ALOGE("NULL device on open");
return -EINVAL;
}
consumerir_device_t *dev = malloc(sizeof(consumerir_device_t));
memset(dev, 0, sizeof(consumerir_device_t));
dev->common.tag = HARDWARE_DEVICE_TAG;
dev->common.version = 0;
dev->common.module = (struct hw_module_t*) module;
dev->common.close = consumerir_close;
dev->transmit = consumerir_transmit;
dev->get_num_carrier_freqs = consumerir_get_num_carrier_freqs;
dev->get_carrier_freqs = consumerir_get_carrier_freqs;
*device = (hw_device_t*) dev;
fd = open("/sys/class/sec/sec_ir/ir_send", O_RDWR);
return 0;
}
static struct hw_module_methods_t consumerir_module_methods = {
.open = consumerir_open,
};
consumerir_module_t HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.module_api_version = CONSUMERIR_MODULE_API_VERSION_1_0,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = CONSUMERIR_HARDWARE_MODULE_ID,
.name = "Consumer IR Module",
.author = "The CyanogenMod Project",
.methods = &consumerir_module_methods,
},
};
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