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#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include "silabs_lib.h"

/* Locals */
static char dev_name[] = "/dev/silabs";
static int dev_fd = 0;
static char lib_str[] = "[silabs_lib]:";

int silabs_open_device(void)
{
	int fdflags;

	/* open the device */
	dev_fd = open(dev_name, O_RDWR); 
	if (dev_fd <= 0) {
		printf("Cannot open %s device\n", dev_name);
		return -1;
	}

	/* set some flags */
	fdflags = fcntl(dev_fd, F_GETFL, 0);
	fdflags |= O_NONBLOCK;
	fcntl(dev_fd, F_SETFL, fdflags);

	return 0;
}

int silabs_close_device(void)
{
	if(dev_fd > 0)
		close(dev_fd);

	return 0;	
}

int silabs_slic_reg_read(int line_id, unsigned char cmd, unsigned char cmd_len, unsigned char *buff)
{
	SilabsRegObjType data;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	data.chanNum = line_id;
	data.func = SI_REG_READ;
	data.regAddr = cmd;
	data.value = 0;
	data.ramValue = 0;
	
	if (ioctl(dev_fd, SILABS_MOD_IOX_REG_CTRL, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_REG_CTRL) failed\n");
		return -1;
	}

	*buff = data.value;

	return 0;
}

int silabs_slic_reg_write(int line_id, unsigned char cmd, unsigned char cmd_len, unsigned char *buff)
{
	SilabsRegObjType data;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	data.chanNum = line_id;
	data.func = SI_REG_WRITE;
	data.regAddr = cmd;
	data.value = buff[0];
	data.ramValue = 0;
	
	if (ioctl(dev_fd, SILABS_MOD_IOX_REG_CTRL, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_REG_CTRL) failed\n");
		return -1;
	}

	return 0;
}

int silabs_slic_ram_read(int line_id, uInt16 cmd, unsigned char cmd_len, unsigned int *buff)
{
	SilabsRegObjType data;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	data.chanNum = line_id;
	data.func = SI_RAM_READ;
	data.ramAddr = cmd;
	data.ramValue = 0;
	data.value = 0;
	
	if (ioctl(dev_fd, SILABS_MOD_IOX_REG_CTRL, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_REG_CTRL) failed\n");
		return -1;
	}

	*buff = data.ramValue;

	return 0;
}

int silabs_slic_ram_write(int line_id, uInt16 cmd, unsigned char cmd_len, unsigned int *buff)
{
	SilabsRegObjType data;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	data.chanNum = line_id;
	data.func = SI_RAM_WRITE;
	data.ramAddr = cmd;
	data.ramValue = buff[0];
	data.value = 0;
	
	if (ioctl(dev_fd, SILABS_MOD_IOX_REG_CTRL, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_REG_CTRL) failed\n");
		return -1;
	}

	return 0;
}

int silabs_control_interface(ControlFuncType func)
{
	SilabsModCtrlObjType data;

	data.func = func;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}
	
	if (ioctl(dev_fd, SILABS_MOD_IOX_CTRL_IF, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CTRL_IF) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_device_init(DeviceFuncType func, int devNum)
{
	SilabsModDevObjType data;

	data.func = func;
	data.devNum = devNum;
			
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}
	
	if (ioctl(dev_fd, SILABS_MOD_IOX_DEVICE_INIT, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_DEVICE_INIT) failed\n");
		return -1;
	}

	return data.status;
}


int silabs_channel_init(ChannelFuncType func, int chanNum)
{
	SilabsModChannelObjType data;
	
	data.func = func;
	data.chanNum = chanNum;
			
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_INIT, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_INIT) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_channel_all(ChannelAllFuncType func)
{
	SilabsModChannelAllObjType data;
	
	data.func = func;

	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_ALL, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_ALL) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_channel_setup(ChannelSetupFuncType func, int chanNum, int preset)
{
	SilabsModChannelSetupObjType data;
	
	data.chanNum = chanNum;
	data.func = func;
	data.preset = preset;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_SETUP, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_SETUP) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_channel_operation(ChannelOPFuncType func, int chanNum)
{
	SilabsModChannelOpObjType data;
	
	data.func = func;
	data.chanNum = chanNum;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_OP, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_OP) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_PCM_TS_setup(int chanNum, uInt16 rxcount, uInt16 txcount)
{
	SilabsModPCMTSSetupObjType data;
	
	data.chanNum = chanNum;
	data.rxcount = rxcount;
	data.txcount = txcount;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_PCM_TS_SETUP, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_PCM_TS_SETUP) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_channel_set_line_feed(int chanNum, uInt8 newLineFeed)
{
	SilabsModChannelLineFeedObjType data;
	
	data.chanNum = chanNum;
	data.newLineFeed = newLineFeed;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_LINE_FEED, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_LINE_FEED) failed\n");
		return -1;
	}

	return data.status;
}

int silabs_channel_read_hook_status(int chanNum, uInt8 *pHookStatus)
{
	SilabsModChannelReadHookStatObjType data;
	
	data.chanNum = chanNum;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_HOOK_STATUS, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_HOOK_STATUS) failed\n");
		return -1;
	}
	
	*pHookStatus = data.hookStatus;

	return data.status;
}

int silabs_channel_set_loopback(int chanNum, ProslicLoopbackModes newMode)
{
	SilabsModChannelSetLoopbackObjType data;
	
	data.chanNum = chanNum;
	data.newMode = newMode;
	
	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return -1;
	}

	if (ioctl(dev_fd, SILABS_MOD_IOX_CHAN_LOOPBACK, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_CHAN_LOOPBACK) failed\n");
		return -1;
	}

	return data.status;
}

bool silabs_get_event(SiEventType *event_p)
{
	SilabsModGetEventType data;
	
	data.pEvent = event_p;

	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return false;
	}

	
	if (ioctl(dev_fd, SILABS_MOD_IOX_GET_EVENT, &data) < 0) {
		printf("ioctl(SILABS_MOD_IOX_GET_EVENT) failed\n");
		return false;
	}

	return data.newEvent;
}

int silabs_check_event(void)
{
	fd_set ex_fds;
	struct timeval timeout = {0, 1};
	int ret;

	if (dev_fd <= 0) {
		printf("Device %s is not accessible\n", dev_name);
		return 1;
	}

	FD_ZERO(&ex_fds);
	FD_SET(dev_fd, &ex_fds);

	/* Wait for event  */
	ret = select(dev_fd+1, NULL, NULL, &ex_fds, &timeout);

	if(FD_ISSET(dev_fd, &ex_fds))
		return 0;
	else
		return 1;
}