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#include <linux/poll.h>
#include <linux/miscdevice.h>
#include <linux/slab.h>
#include "silabs_dev.h"
#include "spi.h"
#include "timer.h"
#include "boardEnv/mvBoardEnvLib.h"

/* SI3226 */
#if defined(CONFIG_SILAB_SLIC_SI3226x)
#define NUMBER_OF_DEVICES 1 
#define NUMBER_OF_PROSLIC NUMBER_OF_DEVICES
#define CHAN_PER_DEVICE 2
#define NUMBER_OF_CHAN (NUMBER_OF_DEVICES*CHAN_PER_DEVICE) 
#define PROSLIC_DEVICE_TYPE SI3226X_TYPE
#endif

/* SI3217 */
#if defined(CONFIG_SILAB_SLIC_SI3217x)
#define NUMBER_OF_DEVICES 1 
#define NUMBER_OF_PROSLIC NUMBER_OF_DEVICES
#define CHAN_PER_DEVICE 1
#define NUMBER_OF_CHAN (NUMBER_OF_DEVICES*CHAN_PER_DEVICE) 
#define PROSLIC_DEVICE_TYPE SI3217X_TYPE
#endif

/* Defines */
#define GET_DEV_STATUS(deviceNum)	silabs_dev_status[deviceNum]
#define GET_LINE_STATUS(chanNum)	silabs_line_status[chanNum]
#define REGISTER_DEVICE(deviceNum)	silabs_dev_status[deviceNum] = 1;
#define REGISTER_LINE(chanNum)		silabs_line_status[chanNum] = 1;
#define MAX_PROFILE_SIZE			128
#define GET_DEVICE(chanNum)			(chanNum / CHAN_PER_DEVICE)
#define GET_LINE(chanNum)			(chanNum % CHAN_PER_DEVICE)
#define MAX_EVENT_QUEUE_SIZE		256
#define SILABS_TICK_TIMER_PERIOD	1
#define SILABS_MOD_NAME				"silabs"
#define SLIC_TIMER_EVENT_SUPPORT

static void silabs_tick_handler(unsigned long data);
static ssize_t silabs_read(struct file *file, char __user *buf, size_t size, loff_t * ppos);
static ssize_t silabs_write(struct file *file, const char __user *buf, size_t size, loff_t * ppos);
static unsigned int silabs_poll(struct file *pFile, poll_table *pPollTable);
static int silabs_ioctl(struct inode *pInode, struct file *pFile, unsigned int cmd, unsigned long arg);
static int silabs_open(struct inode *pInode, struct file *pFile);
static int silabs_release(struct inode *pInode, struct file *pFile);
//static int __init silabs_module_init(void);
//static void __exit silabs_module_exit(void);

/* SI-API-II Dispatchers */
static int silabs_control_interface(unsigned long arg);
static int silabs_register_access(unsigned long arg);
static int silabs_device_init(unsigned long arg);
static int silabs_channel_all(unsigned long arg);
static int silabs_channel_init(unsigned long arg);
static int silabs_channel_setup(unsigned long arg);
static int silabs_channel_operation(unsigned long arg);
static int silabs_PCM_TS_setup(unsigned long arg);
static int silabs_get_event(unsigned long arg);
static int silabs_channel_set_line_feed(unsigned long arg);
static int silabs_channel_read_hook_status(unsigned long arg);
static int silabs_channel_set_loopback(unsigned long arg);

#if defined(CONFIG_SILAB_SLIC_SI3226x)
extern Si3226x_General_Cfg Si3226x_General_Configuration;
#endif
#if defined(CONFIG_SILAB_SLIC_SI3217x)
extern Si3217x_General_Cfg Si3217x_General_Configuration;
#endif

/* Enumurators */
typedef struct {
	unsigned char valid;		/* valid event */
	
	SiEventType si_event;
} silabs_event;

typedef struct _chanState {
	proslicChanType_ptr		ProObj;
} chanState;

/* Structs */
static struct file_operations silabs_fops = {
    owner:      THIS_MODULE,
    llseek:     NULL,
    read:       silabs_read,
    write:      silabs_write,
    poll:       silabs_poll,
    ioctl:      silabs_ioctl,
    open:       silabs_open,
    release:    silabs_release,
    fasync:     NULL
};

/* Globals */
static chanState ports[NUMBER_OF_CHAN];			/* User’s channel object, which has a member defined as proslicChanType_ptr ProObj */
static controlInterfaceType *ProHWIntf; 		/* Define ProSLIC control interface object */
static ProslicDeviceType *ProSLICDevices[NUMBER_OF_PROSLIC];	/* Define array of ProSLIC device objects */
static proslicChanType_ptr arrayOfProslicChans[NUMBER_OF_CHAN];
ctrl_S spiGciObj;

static DEFINE_SPINLOCK(silabs_lock);
static DECLARE_WAIT_QUEUE_HEAD(silabs_wait);
static atomic_t event_count;
static atomic_t silabs_init;
static atomic_t silabs_in_ioctl;
static silabs_event event_queue[MAX_EVENT_QUEUE_SIZE];
static u8 silabs_dev_status[NUMBER_OF_DEVICES];
static u8 silabs_line_status[NUMBER_OF_CHAN];
static volatile u32 next_event = 0, curr_event = 0;
static struct timer_list silabs_timer;
static u16 total_devs = 0, total_lines = 0;

static struct miscdevice silabs_misc_dev = {
	.minor = SLICDEV_MINOR,
 	.name = SILABS_MOD_NAME,
 	.fops = &silabs_fops,
};

static ssize_t silabs_read(struct file *file, char __user *buf, size_t size, loff_t * ppos)
{
	return 0;
}

static ssize_t silabs_write(struct file *file, const char __user *buf, size_t size, loff_t * ppos)
{
	return 0;
}

static unsigned int silabs_poll(struct file *pFile, poll_table *pPollTable)
{
	int mask = 0;

	poll_wait(pFile, &silabs_wait, pPollTable);
	
	if(atomic_read(&event_count) > 0) {
		mask |= POLLPRI;
	}

	return mask;
}

static int silabs_ioctl(struct inode *pInode, struct file *pFile, unsigned int cmd, unsigned long arg)
{
	int ret = 0;

	/* Argument checking */
	if (_IOC_TYPE(cmd) != SILABS_MOD_IOCTL_MAGIC) {
		printk("%s: invalid SILABS MOD Magic Num %i %i\n", __func__, _IOC_TYPE(cmd), SILABS_MOD_IOCTL_MAGIC);
		return -ENOTTY;
	}

	if ((_IOC_NR(cmd) > SILABS_MOD_IOCTL_MAX) || (_IOC_NR(cmd) < SILABS_MOD_IOCTL_MIN)) {
		printk("%s: invalid SILABS MOD IOCTL request\n", __func__);
		return -ENOTTY;
	}

	if (_IOC_DIR(cmd) & _IOC_READ) {
		ret = !access_ok(VERIFY_WRITE, (void __user*)arg, _IOC_SIZE(cmd));
	} 
	else if (_IOC_DIR(cmd) & _IOC_WRITE) {
		ret = !access_ok(VERIFY_READ, (void __user*)arg, _IOC_SIZE(cmd));
	}

	if (ret) {
		printk("%s: invalid SILABS MOD access type %i from cmd %i\n", __func__, _IOC_DIR(cmd), cmd);
		return -EFAULT;
	}

#if defined(SLIC_TIMER_EVENT_SUPPORT)
	/* Disable timer routine processing */
	atomic_set(&silabs_in_ioctl, 1);
#endif

	switch (cmd) {
		
		case SILABS_MOD_IOX_CTRL_IF:
			printk("ioctl: SILABS_MOD_IOX_CTRL_IF\n");
			ret = silabs_control_interface(arg);	
			break;
		
		case SILABS_MOD_IOX_DEVICE_INIT:
			printk("ioctl: SILABS_MOD_IOX_DEVICE_INIT\n");
			ret = silabs_device_init(arg);
			break;

		case SILABS_MOD_IOX_CHAN_ALL:
			printk("ioctl: SILABS_MOD_IOX_CHAN_ALL\n");
			ret = silabs_channel_all(arg);
			break;

		case SILABS_MOD_IOX_CHAN_INIT:
			printk("ioctl: SILABS_MOD_IOX_CHAN_INIT\n");
			ret  = silabs_channel_init(arg);
			break;

		case SILABS_MOD_IOX_CHAN_SETUP:
			printk("ioctl: SILABS_MOD_IOX_CHAN_SETUP\n");
			ret = silabs_channel_setup(arg);
			break;

		case SILABS_MOD_IOX_CHAN_OP:
			printk("ioctl: SILABS_MOD_IOX_CHAN_OP\n");
			ret = silabs_channel_operation(arg);
			break;

		case SILABS_MOD_IOX_PCM_TS_SETUP:
			printk("ioctl: SILABS_MOD_IOX_PCM_TS_SETUP\n");
			ret = silabs_PCM_TS_setup(arg);
			break;

		case SILABS_MOD_IOX_GET_EVENT:
//			printk("ioctl: SILABS_MOD_IOX_GET_EVENT\n");
			ret = silabs_get_event(arg);
			break;
		
		case SILABS_MOD_IOX_REG_CTRL:
			printk("ioctl: SILABS_MOD_IOX_REG_CTRL\n");
			ret = silabs_register_access(arg);
			break;
			
		case SILABS_MOD_IOX_CHAN_LINE_FEED:
			printk("ioctl: SILABS_MOD_IOX_CHAN_LINE_FEED\n");
			ret = silabs_channel_set_line_feed(arg);
			break;
	
		case SILABS_MOD_IOX_CHAN_HOOK_STATUS:
			printk("ioctl: SILABS_MOD_IOX_CHAN_HOOK_STATUS\n");
			ret = silabs_channel_read_hook_status(arg);
			break;

		case SILABS_MOD_IOX_CHAN_LOOPBACK:
			printk("ioctl: SILABS_MOD_IOX_CHAN_LOOPBACK\n");
			ret = silabs_channel_set_loopback(arg);
			break;

		default:
			printk("%s: error, ioctl command(0x%x) not supported !!!\n", __func__, cmd);
			ret = -EFAULT;
			break;
	}

#if defined(SLIC_TIMER_EVENT_SUPPORT)
	/* Enable timer routine processing */
	atomic_set(&silabs_in_ioctl, 0);
#endif

	return ret;
}

static int silabs_register_access(unsigned long arg)
{
	SilabsRegObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsRegObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_REG_READ:
			data.value = ctrl_ReadRegisterWrapper (&spiGciObj, data.chanNum, data.regAddr);
			break;
		case SI_REG_WRITE:
			ctrl_WriteRegisterWrapper(&spiGciObj, data.chanNum, data.regAddr, data.value);
			break;
		case SI_RAM_READ:
			data.ramValue = ctrl_ReadRAMWrapper (&spiGciObj, data.chanNum, data.ramAddr);
			break;
		case SI_RAM_WRITE:
			ctrl_WriteRAMWrapper(&spiGciObj, data.chanNum, data.ramAddr, data.ramValue);
			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}
	
	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsRegObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_control_interface(unsigned long arg)
{
	SilabsModCtrlObjType data;


	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModCtrlObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_IF_CREATE:
#if defined(CONFIG_SILAB_SLIC_SI3226x)
			Si3226x_General_Configuration.irqen2 = 0x3;
#endif
#if defined(CONFIG_SILAB_SLIC_SI3217x)
			Si3217x_General_Configuration.irqen2 = 0x3;
#endif			
			data.status = ProSLIC_createControlInterface (&ProHWIntf);
			break;
		case SI_IF_DESTROY:
			data.status = ProSLIC_destroyControlInterface (&ProHWIntf);
			break;
		case SI_IF_SET_FUNCS:
			ProSLIC_setControlInterfaceCtrlObj (ProHWIntf, &spiGciObj);
			ProSLIC_setControlInterfaceReset (ProHWIntf, ctrl_ResetWrapper);
			ProSLIC_setControlInterfaceWriteRegister (ProHWIntf, ctrl_WriteRegisterWrapper);
			ProSLIC_setControlInterfaceReadRegister (ProHWIntf, ctrl_ReadRegisterWrapper);
			ProSLIC_setControlInterfaceWriteRAM (ProHWIntf, ctrl_WriteRAMWrapper);
			ProSLIC_setControlInterfaceReadRAM (ProHWIntf, ctrl_ReadRAMWrapper);
			ProSLIC_setControlInterfaceTimerObj (ProHWIntf, NULL);
			ProSLIC_setControlInterfaceDelay (ProHWIntf, time_DelayWrapper);
			ProSLIC_setControlInterfaceTimeElapsed (ProHWIntf, NULL);
			ProSLIC_setControlInterfaceGetTime (ProHWIntf, NULL);
			ProSLIC_setControlInterfaceSemaphore (ProHWIntf, NULL);

			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModCtrlObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_device_init(unsigned long arg)
{
	SilabsModDevObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModDevObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_DEVICE_CREATE:
			data.status = ProSLIC_createDevice (&(ProSLICDevices[data.devNum]));
			total_devs++;
			REGISTER_DEVICE(data.devNum);
	
			break;
		case SI_DEVICE_DESTROY:
			data.status = ProSLIC_destroyDevice (&(ProSLICDevices[data.devNum]));
#if defined(SLIC_TIMER_EVENT_SUPPORT)
			if(total_lines == 0) {
				atomic_set(&silabs_init, 0);
				del_timer(&silabs_timer);
			}
#endif
			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModDevObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_channel_all(unsigned long arg)
{
	SilabsModChannelAllObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelAllObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_CHANNEL_ALL_INIT:
			data.status = ProSLIC_Init(arrayOfProslicChans, NUMBER_OF_CHAN);
			break;
		case SI_CHANNEL_ALL_CAL:
			data.status = ProSLIC_Cal(arrayOfProslicChans, NUMBER_OF_CHAN);
			break;
		case SI_CHANNEL_ALL_LBCAL:
			data.status = ProSLIC_LBCal(arrayOfProslicChans, NUMBER_OF_CHAN);
			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelAllObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;

}

static int silabs_channel_init(unsigned long arg)
{
	SilabsModChannelObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_CHANNEL_CREATE:
			data.status = ProSLIC_createChannel (&(ports[data.chanNum].ProObj));
			REGISTER_LINE(data.chanNum);
			break;
		case SI_CHANNEL_DESTROY:
			data.status = ProSLIC_destroyChannel (&(ports[data.chanNum].ProObj));
			break;
		case SI_CHANNEL_BC_INIT:
			data.status = ProSLIC_InitBroadcast (&(ports[data.chanNum].ProObj));
			break;
		case SI_CHANNEL_SW_INIT:
			data.status = ProSLIC_SWInitChan (ports[data.chanNum].ProObj, data.chanNum,
						PROSLIC_DEVICE_TYPE, ProSLICDevices[GET_DEVICE(data.chanNum)], ProHWIntf);

			arrayOfProslicChans[data.chanNum] = ports[data.chanNum].ProObj;
			ProSLIC_setSWDebugMode(ports[data.chanNum].ProObj,TRUE);  /* optional */ 
			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_channel_setup(unsigned long arg)
{
	SilabsModChannelSetupObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelSetupObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_CHANNEL_SETUP_RING:
			data.status = ProSLIC_RingSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_TONEGEN:
			data.status = ProSLIC_ToneGenSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_FSK:
			data.status = ProSLIC_FSKSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_DTMF_DECODE:
			data.status = ProSLIC_DTMFDecodeSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_ZSYNTH:
			data.status = ProSLIC_ZsynthSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_GCICI:
			data.status = ProSLIC_GciCISetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_MODEM_DET:
			data.status = ProSLIC_ModemDetSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_TX_AUDIO_GAIN:
			data.status = ProSLIC_TXAudioGainSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_RX_AUDIO_GAIN:
			data.status = ProSLIC_RXAudioGainSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_DC_FEED:
			data.status = ProSLIC_DCFeedSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_PULSE_METER:
			data.status = ProSLIC_PulseMeterSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		case SI_CHANNEL_SETUP_PCM:
			data.status = ProSLIC_PCMSetup (ports[data.chanNum].ProObj, data.preset);
			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelSetupObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_channel_operation(unsigned long arg)
{
	SilabsModChannelOpObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelOpObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	switch (data.func) {
		case SI_CHANNEL_OP_RESET:
			data.status = ProSLIC_Reset (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_CLEAR_ERR:
			data.status = ProSLIC_clearErrorFlag (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_GPIO_SETUP:
			data.status = ProSLIC_GPIOSetup (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_VERIFY_CTRL_IF:
			data.status = ProSLIC_VerifyControlInterface (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_SHUT_DOWN_CHAN:
			data.status = ProSLIC_ShutdownChannel (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_RING_START:
			data.status = ProSLIC_RingStart (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_RING_STOP:
			data.status = ProSLIC_RingStop (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_ENA_CID:
			data.status = ProSLIC_EnableCID (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_DIS_CID:
			data.status = ProSLIC_DisableCID (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PLL_FREE_RUN_START:
			data.status = ProSLIC_PLLFreeRunStart (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PLL_FREE_RUN_STOP:
			data.status = ProSLIC_PLLFreeRunStop (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PULSE_METER_START:
			data.status = ProSLIC_PulseMeterStart (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PULSE_METER_STOP:
			data.status = ProSLIC_PulseMeterStop (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PWR_UP_CONV:
			data.status = ProSLIC_PowerUpConverter (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PWR_DOWN_CONV:
			data.status = ProSLIC_PowerDownConverter (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_ENA_INT:
			data.status = ProSLIC_EnableInterrupts (ports[data.chanNum].ProObj);
					
			if(!atomic_read(&silabs_init)) {
#if defined(SLIC_TIMER_EVENT_SUPPORT)
				memset(&silabs_timer, 0, sizeof(struct timer_list));
				init_timer(&silabs_timer);
				silabs_timer.function = silabs_tick_handler;
				silabs_timer.data = -1;
				silabs_timer.expires = jiffies + SILABS_TICK_TIMER_PERIOD;
				add_timer(&silabs_timer);
#endif
				atomic_set(&silabs_init, 1);
			}
			break;
		case SI_CHANNEL_OP_PCM_START:
			data.status = ProSLIC_PCMStart (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_PCM_STOP:
			data.status = ProSLIC_PCMStop (ports[data.chanNum].ProObj);
			break;
		case SI_CHANNEL_OP_TONE_GEN_START:
			data.status = ProSLIC_ToneGenStart (ports[data.chanNum].ProObj, 0);
			break;
		case SI_CHANNEL_OP_TONE_GEN_STOP:
			data.status = ProSLIC_ToneGenStop (ports[data.chanNum].ProObj);
			break;
		default:
			printk("%s: error, function (0x%x) not supported !!!\n", __func__, data.func);
			return  -EFAULT;
	}

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelOpObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_PCM_TS_setup(unsigned long arg)
{
	SilabsModPCMTSSetupObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModPCMTSSetupObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	data.status = ProSLIC_PCMTimeSlotSetup(ports[data.chanNum].ProObj, data.rxcount, data.txcount);

	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModPCMTSSetupObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_channel_set_line_feed(unsigned long arg)
{
	SilabsModChannelLineFeedObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelLineFeedObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	data.status = ProSLIC_SetLinefeedStatus(ports[data.chanNum].ProObj, data.newLineFeed);
	
	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelLineFeedObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}


int silabs_get_event(unsigned long arg)
{
	SilabsModGetEventType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModGetEventType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	if(atomic_read(&event_count) == 0) {
		data.newEvent = FALSE;
	}
	else {
		/* Copy event info back to user */
		if(copy_to_user(data.pEvent, &event_queue[curr_event].si_event, sizeof(SiEventType))) {
			printk("%s: copy_to_user failed\n", __func__);
			return  -EFAULT;
		}

		event_queue[curr_event].valid = 0;
		data.newEvent = TRUE;
		atomic_dec(&event_count);
		curr_event++;
		if(curr_event == MAX_EVENT_QUEUE_SIZE)
			curr_event = 0;
	}

	/* Copy status and event info back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModGetEventType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_channel_read_hook_status(unsigned long arg)
{
	SilabsModChannelReadHookStatObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelReadHookStatObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	data.status = ProSLIC_ReadHookStatus (ports[data.chanNum].ProObj, &data.hookStatus);
	
	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelReadHookStatObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_channel_set_loopback(unsigned long arg)
{
	SilabsModChannelSetLoopbackObjType data;

	/* Get user data */
	if(copy_from_user(&data, (void*)arg, sizeof(SilabsModChannelSetLoopbackObjType))) {
		printk("%s: copy_from_user failed\n", __func__);
		return -EFAULT;
	}

	data.status = ProSLIC_SetLoopbackMode (ports[data.chanNum].ProObj, data.newMode);
	
	/* Copy status back to user */
	if(copy_to_user((void*)arg, &data, sizeof(SilabsModChannelSetLoopbackObjType))) {
		printk("%s: copy_to_user failed\n", __func__);
		return  -EFAULT;
	}

	return 0;
}

static int silabs_open(struct inode *pInode, struct file *pFile)
{
	try_module_get(THIS_MODULE);
	return 0;
}

static int silabs_release(struct inode *pInode, struct file *pFile)
{
	module_put(THIS_MODULE);
	return 0;
}

#if defined(SLIC_TIMER_EVENT_SUPPORT)
static void silabs_tick_handler(unsigned long data)
{
	u8 chanNum;
	unsigned long flags;
	
	silabs_event *pEvent;
	
	proslicIntType siEvent;
	ProslicInt irqs[MAX_PROSLIC_IRQS];
	
	/* Check if events are already active and not processing IOCTL */
	if ((atomic_read(&silabs_init) == 0) || (atomic_read(&silabs_in_ioctl) == 1))
		goto timer_exit;

	spin_lock_irqsave(&silabs_lock, flags);

	siEvent.irqs = irqs;

	for (chanNum = 0; chanNum < NUMBER_OF_CHAN; chanNum++) {
		
		if (GET_LINE_STATUS(chanNum) == 0)
			continue;

		siEvent.number = 0;

		/* Check for free resources */
		if (atomic_read(&event_count) >= MAX_EVENT_QUEUE_SIZE)
			goto timer_exit;

		if (ProSLIC_GetInterrupts(ports[chanNum].ProObj, &siEvent)) {

			printk("We got new %d events! \n", siEvent.number);
	
			pEvent = &event_queue[next_event];
			pEvent->si_event.chanNum = chanNum;
			pEvent->si_event.devNum = GET_DEVICE(chanNum);
			pEvent->si_event.eventsNum = siEvent.number;
			memcpy(pEvent->si_event.irqs, siEvent.irqs, sizeof(ProslicInt)*MAX_PROSLIC_IRQS);
				
			next_event++;
			
			if (next_event == MAX_EVENT_QUEUE_SIZE)
				next_event = 0;

			atomic_inc(&event_count);
		
			if (pEvent->valid == 0) {
				pEvent->valid = 1;
			} else {
				printk("%s: error, event(%u) was overrided\n", __func__, next_event);
				break;
			}
		}
	}

	spin_unlock_irqrestore(&silabs_lock, flags);

timer_exit:

	/* Checks if user application should be signaled */
	if (atomic_read(&event_count) > 0) {
		wake_up_interruptible(&silabs_wait);
	}

	/* Schedule next timer tick */
	silabs_timer.expires = jiffies + SILABS_TICK_TIMER_PERIOD;
    	add_timer(&silabs_timer);
}
#endif

int __init silabs_module_init(void)
{
	int status = 0;

	printk("Loading Marvell %s device\n", SILABS_MOD_NAME);
	
	status = misc_register(&silabs_misc_dev);

	/* Register SILABS device module */
	if (status < 0) {
		printk("Error, failed to load %s module(%d)\n", SILABS_MOD_NAME, status);
		return status;
	}

	atomic_set(&silabs_init, 0);
	atomic_set(&silabs_in_ioctl, 0);
	total_devs = 0;
	total_lines = 0;
	next_event = 0;
	curr_event = 0;
	memset(silabs_dev_status, 0, NUMBER_OF_DEVICES);
	memset(silabs_line_status, 0, NUMBER_OF_CHAN);
	
	/* Reset event counter */
	atomic_set(&event_count, 0);

	/* Clear event queue */
	memset(event_queue, 0, (MAX_EVENT_QUEUE_SIZE * sizeof(silabs_event)));
	
	spiGciObj.portID = mvBoardTdmSpiIdGet();
	SPI_Init (&spiGciObj);

	return 0;
}

void __exit silabs_module_exit(void)
{
	printk("Unloading %s device module\n", SILABS_MOD_NAME);

#if defined(SLIC_TIMER_EVENT_SUPPORT)
	if(total_lines == 0)
		del_timer(&silabs_timer);
#endif

	/* Unregister SILABS misc device */
	misc_deregister(&silabs_misc_dev);

	return;
}

/* Module stuff */
module_init(silabs_module_init);
module_exit(silabs_module_exit);
MODULE_DESCRIPTION("Silicon Labs Proslic Device");
MODULE_AUTHOR("Nadav Haklai <nadavh@marvell.com>");
MODULE_LICENSE("GPL");