drivers/media/video/tm6000/tm6000-input.c - kernel/mindspeed - Git at Google

 /*
  *  tm6000-input.c - driver for TM5600/TM6000/TM6010 USB video capture devices
  *
  *  Copyright (C) 2010 Stefan Ringel <stefan.ringel@arcor.de>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation version 2
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/delay.h>

 #include <linux/input.h>
 #include <linux/usb.h>

 #include <media/rc-core.h>

 #include "tm6000.h"
 #include "tm6000-regs.h"

 static unsigned int ir_debug;
 module_param(ir_debug, int, 0644);
 MODULE_PARM_DESC(ir_debug, "enable debug message [IR]");

 static unsigned int enable_ir = 1;
 module_param(enable_ir, int, 0644);
 MODULE_PARM_DESC(enable_ir, "enable ir (default is enable)");

 /* number of 50ms for ON-OFF-ON power led */
 /* show IR activity */
 #define PWLED_OFF 2

 #undef dprintk

 #define dprintk(fmt, arg...) \
 	if (ir_debug) { \
 		printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
 	}

 struct tm6000_ir_poll_result {
 	u16 rc_data;
 };

 struct tm6000_IR {
 	struct tm6000_core	*dev;
 	struct rc_dev		*rc;
 	char			name[32];
 	char			phys[32];

 	/* poll expernal decoder */
 	int			polling;
 	struct delayed_work	work;
 	u8			wait:1;
 	u8			key:1;
 	u8			pwled:1;
 	u8			pwledcnt;
 	u16			key_addr;
 	struct urb		*int_urb;
 	u8			*urb_data;

 	int (*get_key) (struct tm6000_IR *, struct tm6000_ir_poll_result *);

 	/* IR device properties */
 	u64			rc_type;
 };


 void tm6000_ir_wait(struct tm6000_core *dev, u8 state)
 {
 	struct tm6000_IR *ir = dev->ir;

 	if (!dev->ir)
 		return;

 	if (state)
 		ir->wait = 1;
 	else
 		ir->wait = 0;
 }


 static int tm6000_ir_config(struct tm6000_IR *ir)
 {
 	struct tm6000_core *dev = ir->dev;
 	u8 buf[10];
 	int rc;

 	switch (ir->rc_type) {
 	case RC_TYPE_NEC:
 		/* Setup IR decoder for NEC standard 12MHz system clock */
 		/* IR_LEADER_CNT = 0.9ms             */
 		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_LEADER1, 0xaa);
 		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_LEADER0, 0x30);
 		/* IR_PULSE_CNT = 0.7ms              */
 		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_PULSE_CNT1, 0x20);
 		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_PULSE_CNT0, 0xd0);
 		/* Remote WAKEUP = enable */
 		tm6000_set_reg(dev, TM6010_REQ07_RE5_REMOTE_WAKEUP, 0xfe);
 		/* IR_WKUP_SEL = Low byte in decoded IR data */
 		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_WAKEUP_SEL, 0xff);
 		/* IR_WKU_ADD code */
 		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_WAKEUP_ADD, 0xff);
 		tm6000_flash_led(dev, 0);
 		msleep(100);
 		tm6000_flash_led(dev, 1);
 		break;
 	default:
 		/* hack */
 		buf[0] = 0xff;
 		buf[1] = 0xff;
 		buf[2] = 0xf2;
 		buf[3] = 0x2b;
 		buf[4] = 0x20;
 		buf[5] = 0x35;
 		buf[6] = 0x60;
 		buf[7] = 0x04;
 		buf[8] = 0xc0;
 		buf[9] = 0x08;

 		rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
 			USB_RECIP_DEVICE, REQ_00_SET_IR_VALUE, 0, 0, buf, 0x0a);
 		msleep(100);

 		if (rc < 0) {
 			printk(KERN_INFO "IR configuration failed");
 			return rc;
 		}
 		break;
 	}

 	return 0;
 }

 static void tm6000_ir_urb_received(struct urb *urb)
 {
 	struct tm6000_core *dev = urb->context;
 	struct tm6000_IR *ir = dev->ir;
 	int rc;

 	if (urb->status != 0)
 		printk(KERN_INFO "not ready\n");
 	else if (urb->actual_length > 0) {
 		memcpy(ir->urb_data, urb->transfer_buffer, urb->actual_length);

 		dprintk("data %02x %02x %02x %02x\n", ir->urb_data[0],
 			ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]);

 		ir->key = 1;
 	}

 	rc = usb_submit_urb(urb, GFP_ATOMIC);
 }

 static int default_polling_getkey(struct tm6000_IR *ir,
 				struct tm6000_ir_poll_result *poll_result)
 {
 	struct tm6000_core *dev = ir->dev;
 	int rc;
 	u8 buf[2];

 	if (ir->wait && !&dev->int_in)
 		return 0;

 	if (&dev->int_in) {
 		switch (ir->rc_type) {
 		case RC_TYPE_RC5:
 			poll_result->rc_data = ir->urb_data[0];
 			break;
 		case RC_TYPE_NEC:
 			if (ir->urb_data[1] == ((ir->key_addr >> 8) & 0xff)) {
 				poll_result->rc_data = ir->urb_data[0]
 							| ir->urb_data[1] << 8;
 			}
 			break;
 		default:
 			poll_result->rc_data = ir->urb_data[0]
 					| ir->urb_data[1] << 8;
 			break;
 		}
 	} else {
 		tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
 		msleep(10);
 		tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1);
 		msleep(10);

 		if (ir->rc_type == RC_TYPE_RC5) {
 			rc = tm6000_read_write_usb(dev, USB_DIR_IN |
 				USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 				REQ_02_GET_IR_CODE, 0, 0, buf, 1);

 			msleep(10);

 			dprintk("read data=%02x\n", buf[0]);
 			if (rc < 0)
 				return rc;

 			poll_result->rc_data = buf[0];
 		} else {
 			rc = tm6000_read_write_usb(dev, USB_DIR_IN |
 				USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 				REQ_02_GET_IR_CODE, 0, 0, buf, 2);

 			msleep(10);

 			dprintk("read data=%04x\n", buf[0] | buf[1] << 8);
 			if (rc < 0)
 				return rc;

 			poll_result->rc_data = buf[0] | buf[1] << 8;
 		}
 		if ((poll_result->rc_data & 0x00ff) != 0xff)
 			ir->key = 1;
 	}
 	return 0;
 }

 static void tm6000_ir_handle_key(struct tm6000_IR *ir)
 {
 	struct tm6000_core *dev = ir->dev;
 	int result;
 	struct tm6000_ir_poll_result poll_result;

 	/* read the registers containing the IR status */
 	result = ir->get_key(ir, &poll_result);
 	if (result < 0) {
 		printk(KERN_INFO "ir->get_key() failed %d\n", result);
 		return;
 	}

 	dprintk("ir->get_key result data=%04x\n", poll_result.rc_data);

 	if (ir->pwled) {
 		if (ir->pwledcnt >= PWLED_OFF) {
 			ir->pwled = 0;
 			ir->pwledcnt = 0;
 			tm6000_flash_led(dev, 1);
 		} else
 			ir->pwledcnt += 1;
 	}

 	if (ir->key) {
 		rc_keydown(ir->rc, poll_result.rc_data, 0);
 		ir->key = 0;
 		ir->pwled = 1;
 		ir->pwledcnt = 0;
 		tm6000_flash_led(dev, 0);
 	}
 	return;
 }

 static void tm6000_ir_work(struct work_struct *work)
 {
 	struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);

 	tm6000_ir_handle_key(ir);
 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
 }

 static int tm6000_ir_start(struct rc_dev *rc)
 {
 	struct tm6000_IR *ir = rc->priv;

 	INIT_DELAYED_WORK(&ir->work, tm6000_ir_work);
 	schedule_delayed_work(&ir->work, 0);

 	return 0;
 }

 static void tm6000_ir_stop(struct rc_dev *rc)
 {
 	struct tm6000_IR *ir = rc->priv;

 	cancel_delayed_work_sync(&ir->work);
 }

 static int tm6000_ir_change_protocol(struct rc_dev *rc, u64 rc_type)
 {
 	struct tm6000_IR *ir = rc->priv;

 	if (!ir)
 		return 0;

 	if ((rc->rc_map.scan) && (rc_type == RC_TYPE_NEC))
 		ir->key_addr = ((rc->rc_map.scan[0].scancode >> 8) & 0xffff);

 	ir->get_key = default_polling_getkey;
 	ir->rc_type = rc_type;

 	tm6000_ir_config(ir);
 	/* TODO */
 	return 0;
 }

 int tm6000_ir_int_start(struct tm6000_core *dev)
 {
 	struct tm6000_IR *ir = dev->ir;
 	int pipe, size;
 	int err = -ENOMEM;


 	if (!ir)
 		return -ENODEV;

 	ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);
 	if (!ir->int_urb)
 		return -ENOMEM;

 	pipe = usb_rcvintpipe(dev->udev,
 		dev->int_in.endp->desc.bEndpointAddress
 		& USB_ENDPOINT_NUMBER_MASK);

 	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 	dprintk("IR max size: %d\n", size);

 	ir->int_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
 	if (ir->int_urb->transfer_buffer == NULL) {
 		usb_free_urb(ir->int_urb);
 		return err;
 	}
 	dprintk("int interval: %d\n", dev->int_in.endp->desc.bInterval);
 	usb_fill_int_urb(ir->int_urb, dev->udev, pipe,
 		ir->int_urb->transfer_buffer, size,
 		tm6000_ir_urb_received, dev,
 		dev->int_in.endp->desc.bInterval);
 	err = usb_submit_urb(ir->int_urb, GFP_KERNEL);
 	if (err) {
 		kfree(ir->int_urb->transfer_buffer);
 		usb_free_urb(ir->int_urb);
 		return err;
 	}
 	ir->urb_data = kzalloc(size, GFP_KERNEL);

 	return 0;
 }

 void tm6000_ir_int_stop(struct tm6000_core *dev)
 {
 	struct tm6000_IR *ir = dev->ir;

 	if (!ir)
 		return;

 	usb_kill_urb(ir->int_urb);
 	kfree(ir->int_urb->transfer_buffer);
 	usb_free_urb(ir->int_urb);
 	ir->int_urb = NULL;
 	kfree(ir->urb_data);
 	ir->urb_data = NULL;
 }

 int tm6000_ir_init(struct tm6000_core *dev)
 {
 	struct tm6000_IR *ir;
 	struct rc_dev *rc;
 	int err = -ENOMEM;

 	if (!enable_ir)
 		return -ENODEV;

 	if (!dev->caps.has_remote)
 		return 0;

 	if (!dev->ir_codes)
 		return 0;

 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 	rc = rc_allocate_device();
 	if (!ir || !rc)
 		goto out;

 	/* record handles to ourself */
 	ir->dev = dev;
 	dev->ir = ir;
 	ir->rc = rc;

 	/* input einrichten */
 	rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC;
 	rc->priv = ir;
 	rc->change_protocol = tm6000_ir_change_protocol;
 	rc->open = tm6000_ir_start;
 	rc->close = tm6000_ir_stop;
 	rc->driver_type = RC_DRIVER_SCANCODE;

 	ir->polling = 50;
 	ir->pwled = 0;
 	ir->pwledcnt = 0;


 	snprintf(ir->name, sizeof(ir->name), "tm5600/60x0 IR (%s)",
 						dev->name);

 	usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
 	strlcat(ir->phys, "/input0", sizeof(ir->phys));

 	tm6000_ir_change_protocol(rc, RC_TYPE_UNKNOWN);

 	rc->input_name = ir->name;
 	rc->input_phys = ir->phys;
 	rc->input_id.bustype = BUS_USB;
 	rc->input_id.version = 1;
 	rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
 	rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
 	rc->map_name = dev->ir_codes;
 	rc->driver_name = "tm6000";
 	rc->dev.parent = &dev->udev->dev;

 	if (&dev->int_in) {
 		dprintk("IR over int\n");

 		err = tm6000_ir_int_start(dev);

 		if (err)
 			goto out;
 	}

 	/* ir register */
 	err = rc_register_device(rc);
 	if (err)
 		goto out;

 	return 0;

 out:
 	dev->ir = NULL;
 	rc_free_device(rc);
 	kfree(ir);
 	return err;
 }

 int tm6000_ir_fini(struct tm6000_core *dev)
 {
 	struct tm6000_IR *ir = dev->ir;

 	/* skip detach on non attached board */

 	if (!ir)
 		return 0;

 	rc_unregister_device(ir->rc);

 	if (ir->int_urb)
 		tm6000_ir_int_stop(dev);

 	kfree(ir);
 	dev->ir = NULL;

 	return 0;
 }
	/*
	* tm6000-input.c - driver for TM5600/TM6000/TM6010 USB video capture devices
	*
	* Copyright (C) 2010 Stefan Ringel <stefan.ringel@arcor.de>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation version 2
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*/

	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/delay.h>

	#include <linux/input.h>
	#include <linux/usb.h>

	#include <media/rc-core.h>

	#include "tm6000.h"
	#include "tm6000-regs.h"

	static unsigned int ir_debug;
	module_param(ir_debug, int, 0644);
	MODULE_PARM_DESC(ir_debug, "enable debug message [IR]");

	static unsigned int enable_ir = 1;
	module_param(enable_ir, int, 0644);
	MODULE_PARM_DESC(enable_ir, "enable ir (default is enable)");

	/* number of 50ms for ON-OFF-ON power led */
	/* show IR activity */
	#define PWLED_OFF 2

	#undef dprintk

	#define dprintk(fmt, arg...) \
	if (ir_debug) { \
	printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
	}

	struct tm6000_ir_poll_result {
	u16 rc_data;
	};

	struct tm6000_IR {
	struct tm6000_core *dev;
	struct rc_dev *rc;
	char name[32];
	char phys[32];

	/* poll expernal decoder */
	int polling;
	struct delayed_work work;
	u8 wait:1;
	u8 key:1;
	u8 pwled:1;
	u8 pwledcnt;
	u16 key_addr;
	struct urb *int_urb;
	u8 *urb_data;

	int (get_key) (struct tm6000_IR , struct tm6000_ir_poll_result *);

	/* IR device properties */
	u64 rc_type;
	};


	void tm6000_ir_wait(struct tm6000_core *dev, u8 state)
	{
	struct tm6000_IR *ir = dev->ir;

	if (!dev->ir)
	return;

	if (state)
	ir->wait = 1;
	else
	ir->wait = 0;
	}


	static int tm6000_ir_config(struct tm6000_IR *ir)
	{
	struct tm6000_core *dev = ir->dev;
	u8 buf[10];
	int rc;

	switch (ir->rc_type) {
	case RC_TYPE_NEC:
	/* Setup IR decoder for NEC standard 12MHz system clock */
	/* IR_LEADER_CNT = 0.9ms */
	tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_LEADER1, 0xaa);
	tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_LEADER0, 0x30);
	/* IR_PULSE_CNT = 0.7ms */
	tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_PULSE_CNT1, 0x20);
	tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_PULSE_CNT0, 0xd0);
	/* Remote WAKEUP = enable */
	tm6000_set_reg(dev, TM6010_REQ07_RE5_REMOTE_WAKEUP, 0xfe);
	/* IR_WKUP_SEL = Low byte in decoded IR data */
	tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_WAKEUP_SEL, 0xff);
	/* IR_WKU_ADD code */
	tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_WAKEUP_ADD, 0xff);
	tm6000_flash_led(dev, 0);
	msleep(100);
	tm6000_flash_led(dev, 1);
	break;
	default:
	/* hack */
	buf[0] = 0xff;
	buf[1] = 0xff;
	buf[2] = 0xf2;
	buf[3] = 0x2b;
	buf[4] = 0x20;
	buf[5] = 0x35;
	buf[6] = 0x60;
	buf[7] = 0x04;
	buf[8] = 0xc0;
	buf[9] = 0x08;

	rc = tm6000_read_write_usb(dev, USB_DIR_OUT \| USB_TYPE_VENDOR \|
	USB_RECIP_DEVICE, REQ_00_SET_IR_VALUE, 0, 0, buf, 0x0a);
	msleep(100);

	if (rc < 0) {
	printk(KERN_INFO "IR configuration failed");
	return rc;
	}
	break;
	}

	return 0;
	}

	static void tm6000_ir_urb_received(struct urb *urb)
	{
	struct tm6000_core *dev = urb->context;
	struct tm6000_IR *ir = dev->ir;
	int rc;

	if (urb->status != 0)
	printk(KERN_INFO "not ready\n");
	else if (urb->actual_length > 0) {
	memcpy(ir->urb_data, urb->transfer_buffer, urb->actual_length);

	dprintk("data %02x %02x %02x %02x\n", ir->urb_data[0],
	ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]);

	ir->key = 1;
	}

	rc = usb_submit_urb(urb, GFP_ATOMIC);
	}

	static int default_polling_getkey(struct tm6000_IR *ir,
	struct tm6000_ir_poll_result *poll_result)
	{
	struct tm6000_core *dev = ir->dev;
	int rc;
	u8 buf[2];

	if (ir->wait && !&dev->int_in)
	return 0;

	if (&dev->int_in) {
	switch (ir->rc_type) {
	case RC_TYPE_RC5:
	poll_result->rc_data = ir->urb_data[0];
	break;
	case RC_TYPE_NEC:
	if (ir->urb_data[1] == ((ir->key_addr >> 8) & 0xff)) {
	poll_result->rc_data = ir->urb_data[0]
	\| ir->urb_data[1] << 8;
	}
	break;
	default:
	poll_result->rc_data = ir->urb_data[0]
	\| ir->urb_data[1] << 8;
	break;
	}
	} else {
	tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
	msleep(10);
	tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1);
	msleep(10);

	if (ir->rc_type == RC_TYPE_RC5) {
	rc = tm6000_read_write_usb(dev, USB_DIR_IN \|
	USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	REQ_02_GET_IR_CODE, 0, 0, buf, 1);

	msleep(10);

	dprintk("read data=%02x\n", buf[0]);
	if (rc < 0)
	return rc;

	poll_result->rc_data = buf[0];
	} else {
	rc = tm6000_read_write_usb(dev, USB_DIR_IN \|
	USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	REQ_02_GET_IR_CODE, 0, 0, buf, 2);

	msleep(10);

	dprintk("read data=%04x\n", buf[0] \| buf[1] << 8);
	if (rc < 0)
	return rc;

	poll_result->rc_data = buf[0] \| buf[1] << 8;
	}
	if ((poll_result->rc_data & 0x00ff) != 0xff)
	ir->key = 1;
	}
	return 0;
	}

	static void tm6000_ir_handle_key(struct tm6000_IR *ir)
	{
	struct tm6000_core *dev = ir->dev;
	int result;
	struct tm6000_ir_poll_result poll_result;

	/* read the registers containing the IR status */
	result = ir->get_key(ir, &poll_result);
	if (result < 0) {
	printk(KERN_INFO "ir->get_key() failed %d\n", result);
	return;
	}

	dprintk("ir->get_key result data=%04x\n", poll_result.rc_data);

	if (ir->pwled) {
	if (ir->pwledcnt >= PWLED_OFF) {
	ir->pwled = 0;
	ir->pwledcnt = 0;
	tm6000_flash_led(dev, 1);
	} else
	ir->pwledcnt += 1;
	}

	if (ir->key) {
	rc_keydown(ir->rc, poll_result.rc_data, 0);
	ir->key = 0;
	ir->pwled = 1;
	ir->pwledcnt = 0;
	tm6000_flash_led(dev, 0);
	}
	return;
	}

	static void tm6000_ir_work(struct work_struct *work)
	{
	struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);

	tm6000_ir_handle_key(ir);
	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
	}

	static int tm6000_ir_start(struct rc_dev *rc)
	{
	struct tm6000_IR *ir = rc->priv;

	INIT_DELAYED_WORK(&ir->work, tm6000_ir_work);
	schedule_delayed_work(&ir->work, 0);

	return 0;
	}

	static void tm6000_ir_stop(struct rc_dev *rc)
	{
	struct tm6000_IR *ir = rc->priv;

	cancel_delayed_work_sync(&ir->work);
	}

	static int tm6000_ir_change_protocol(struct rc_dev *rc, u64 rc_type)
	{
	struct tm6000_IR *ir = rc->priv;

	if (!ir)
	return 0;

	if ((rc->rc_map.scan) && (rc_type == RC_TYPE_NEC))
	ir->key_addr = ((rc->rc_map.scan[0].scancode >> 8) & 0xffff);

	ir->get_key = default_polling_getkey;
	ir->rc_type = rc_type;

	tm6000_ir_config(ir);
	/* TODO */
	return 0;
	}

	int tm6000_ir_int_start(struct tm6000_core *dev)
	{
	struct tm6000_IR *ir = dev->ir;
	int pipe, size;
	int err = -ENOMEM;


	if (!ir)
	return -ENODEV;

	ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!ir->int_urb)
	return -ENOMEM;

	pipe = usb_rcvintpipe(dev->udev,
	dev->int_in.endp->desc.bEndpointAddress
	& USB_ENDPOINT_NUMBER_MASK);

	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
	dprintk("IR max size: %d\n", size);

	ir->int_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
	if (ir->int_urb->transfer_buffer == NULL) {
	usb_free_urb(ir->int_urb);
	return err;
	}
	dprintk("int interval: %d\n", dev->int_in.endp->desc.bInterval);
	usb_fill_int_urb(ir->int_urb, dev->udev, pipe,
	ir->int_urb->transfer_buffer, size,
	tm6000_ir_urb_received, dev,
	dev->int_in.endp->desc.bInterval);
	err = usb_submit_urb(ir->int_urb, GFP_KERNEL);
	if (err) {
	kfree(ir->int_urb->transfer_buffer);
	usb_free_urb(ir->int_urb);
	return err;
	}
	ir->urb_data = kzalloc(size, GFP_KERNEL);

	return 0;
	}

	void tm6000_ir_int_stop(struct tm6000_core *dev)
	{
	struct tm6000_IR *ir = dev->ir;

	if (!ir)
	return;

	usb_kill_urb(ir->int_urb);
	kfree(ir->int_urb->transfer_buffer);
	usb_free_urb(ir->int_urb);
	ir->int_urb = NULL;
	kfree(ir->urb_data);
	ir->urb_data = NULL;
	}

	int tm6000_ir_init(struct tm6000_core *dev)
	{
	struct tm6000_IR *ir;
	struct rc_dev *rc;
	int err = -ENOMEM;

	if (!enable_ir)
	return -ENODEV;

	if (!dev->caps.has_remote)
	return 0;

	if (!dev->ir_codes)
	return 0;

	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
	rc = rc_allocate_device();
	if (!ir \|\| !rc)
	goto out;

	/* record handles to ourself */
	ir->dev = dev;
	dev->ir = ir;
	ir->rc = rc;

	/* input einrichten */
	rc->allowed_protos = RC_TYPE_RC5 \| RC_TYPE_NEC;
	rc->priv = ir;
	rc->change_protocol = tm6000_ir_change_protocol;
	rc->open = tm6000_ir_start;
	rc->close = tm6000_ir_stop;
	rc->driver_type = RC_DRIVER_SCANCODE;

	ir->polling = 50;
	ir->pwled = 0;
	ir->pwledcnt = 0;


	snprintf(ir->name, sizeof(ir->name), "tm5600/60x0 IR (%s)",
	dev->name);

	usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
	strlcat(ir->phys, "/input0", sizeof(ir->phys));

	tm6000_ir_change_protocol(rc, RC_TYPE_UNKNOWN);

	rc->input_name = ir->name;
	rc->input_phys = ir->phys;
	rc->input_id.bustype = BUS_USB;
	rc->input_id.version = 1;
	rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
	rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
	rc->map_name = dev->ir_codes;
	rc->driver_name = "tm6000";
	rc->dev.parent = &dev->udev->dev;

	if (&dev->int_in) {
	dprintk("IR over int\n");

	err = tm6000_ir_int_start(dev);

	if (err)
	goto out;
	}

	/* ir register */
	err = rc_register_device(rc);
	if (err)
	goto out;

	return 0;

	out:
	dev->ir = NULL;
	rc_free_device(rc);
	kfree(ir);
	return err;
	}

	int tm6000_ir_fini(struct tm6000_core *dev)
	{
	struct tm6000_IR *ir = dev->ir;

	/* skip detach on non attached board */

	if (!ir)
	return 0;

	rc_unregister_device(ir->rc);

	if (ir->int_urb)
	tm6000_ir_int_stop(dev);

	kfree(ir);
	dev->ir = NULL;

	return 0;
	}