drivers/staging/tm6000/tm6000-input.c - linux - 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/ir-core.h>
 #include <media/ir-common.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");

 #undef dprintk

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

 struct tm6000_ir_poll_result {
 	u8 rc_data[4];
 };

 struct tm6000_IR {
 	struct tm6000_core	*dev;
 	struct ir_input_dev	*input;
 	struct ir_input_state	ir;
 	char			name[32];
 	char			phys[32];

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

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

 	/* IR device properties */
 	struct ir_dev_props	props;
 };


 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;

 	/* 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;
 	}
 	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) {
 		poll_result->rc_data[0] = 0xff;
 		return 0;
 	}

 	if (&dev->int_in) {
 		poll_result->rc_data[0] = ir->urb_data[0];
 		poll_result->rc_data[1] = ir->urb_data[1];
 	} 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);

 		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[0] = buf[0];
 	}
 	return 0;
 }

 static void tm6000_ir_handle_key(struct tm6000_IR *ir)
 {
 	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=%02x %02x\n",
 		poll_result.rc_data[0], poll_result.rc_data[1]);

 	if (poll_result.rc_data[0] != 0xff && ir->key == 1) {
 		ir_input_keydown(ir->input->input_dev, &ir->ir,
 			poll_result.rc_data[0] | poll_result.rc_data[1] << 8);

 		ir_input_nokey(ir->input->input_dev, &ir->ir);
 		ir->key = 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(void *priv)
 {
 	struct tm6000_IR *ir = priv;

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

 	return 0;
 }

 static void tm6000_ir_stop(void *priv)
 {
 	struct tm6000_IR *ir = priv;

 	cancel_delayed_work_sync(&ir->work);
 }

 int tm6000_ir_change_protocol(void *priv, u64 ir_type)
 {
 	struct tm6000_IR *ir = priv;

 	ir->get_key = default_polling_getkey;

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

 int tm6000_ir_init(struct tm6000_core *dev)
 {
 	struct tm6000_IR *ir;
 	struct ir_input_dev *ir_input_dev;
 	int err = -ENOMEM;
 	int pipe, size, rc;

 	if (!enable_ir)
 		return -ENODEV;

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

 	if (!dev->ir_codes)
 		return 0;

 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 	ir_input_dev = kzalloc(sizeof(*ir_input_dev), GFP_KERNEL);
 	ir_input_dev->input_dev = input_allocate_device();
 	if (!ir || !ir_input_dev || !ir_input_dev->input_dev)
 		goto err_out_free;

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

 	ir->input = ir_input_dev;

 	/* input einrichten */
 	ir->props.allowed_protos = IR_TYPE_RC5 | IR_TYPE_NEC;
 	ir->props.priv = ir;
 	ir->props.change_protocol = tm6000_ir_change_protocol;
 	ir->props.open = tm6000_ir_start;
 	ir->props.close = tm6000_ir_stop;
 	ir->props.driver_type = RC_DRIVER_SCANCODE;

 	ir->polling = 50;

 	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(ir, IR_TYPE_UNKNOWN);
 	err = ir_input_init(ir_input_dev->input_dev, &ir->ir, IR_TYPE_OTHER);
 	if (err < 0)
 		goto err_out_free;

 	ir_input_dev->input_dev->name = ir->name;
 	ir_input_dev->input_dev->phys = ir->phys;
 	ir_input_dev->input_dev->id.bustype = BUS_USB;
 	ir_input_dev->input_dev->id.version = 1;
 	ir_input_dev->input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
 	ir_input_dev->input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);

 	ir_input_dev->input_dev->dev.parent = &dev->udev->dev;

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

 		ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);

 		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);
 			goto err_out_stop;
 		}
 		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);
 		rc = usb_submit_urb(ir->int_urb, GFP_KERNEL);
 		if (rc) {
 			kfree(ir->int_urb->transfer_buffer);
 			usb_free_urb(ir->int_urb);
 			err = rc;
 			goto err_out_stop;
 		}
 		ir->urb_data = kzalloc(size, GFP_KERNEL);
 	}

 	/* ir register */
 	err = ir_input_register(ir->input->input_dev, dev->ir_codes,
 		&ir->props, "tm6000");
 	if (err)
 		goto err_out_stop;

 	return 0;

 err_out_stop:
 	dev->ir = NULL;
 err_out_free:
 	kfree(ir_input_dev);
 	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;

 	ir_input_unregister(ir->input->input_dev);

 	if (ir->int_urb) {
 		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;
 	}

 	kfree(ir->input);
 	ir->input = NULL;
 	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/ir-core.h>
	#include <media/ir-common.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");

	#undef dprintk

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

	struct tm6000_ir_poll_result {
	u8 rc_data[4];
	};

	struct tm6000_IR {
	struct tm6000_core *dev;
	struct ir_input_dev *input;
	struct ir_input_state ir;
	char name[32];
	char phys[32];

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

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

	/* IR device properties */
	struct ir_dev_props props;
	};


	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;

	/* 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;
	}
	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) {
	poll_result->rc_data[0] = 0xff;
	return 0;
	}

	if (&dev->int_in) {
	poll_result->rc_data[0] = ir->urb_data[0];
	poll_result->rc_data[1] = ir->urb_data[1];
	} 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);

	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[0] = buf[0];
	}
	return 0;
	}

	static void tm6000_ir_handle_key(struct tm6000_IR *ir)
	{
	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=%02x %02x\n",
	poll_result.rc_data[0], poll_result.rc_data[1]);

	if (poll_result.rc_data[0] != 0xff && ir->key == 1) {
	ir_input_keydown(ir->input->input_dev, &ir->ir,
	poll_result.rc_data[0] \| poll_result.rc_data[1] << 8);

	ir_input_nokey(ir->input->input_dev, &ir->ir);
	ir->key = 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(void *priv)
	{
	struct tm6000_IR *ir = priv;

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

	return 0;
	}

	static void tm6000_ir_stop(void *priv)
	{
	struct tm6000_IR *ir = priv;

	cancel_delayed_work_sync(&ir->work);
	}

	int tm6000_ir_change_protocol(void *priv, u64 ir_type)
	{
	struct tm6000_IR *ir = priv;

	ir->get_key = default_polling_getkey;

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

	int tm6000_ir_init(struct tm6000_core *dev)
	{
	struct tm6000_IR *ir;
	struct ir_input_dev *ir_input_dev;
	int err = -ENOMEM;
	int pipe, size, rc;

	if (!enable_ir)
	return -ENODEV;

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

	if (!dev->ir_codes)
	return 0;

	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
	ir_input_dev = kzalloc(sizeof(*ir_input_dev), GFP_KERNEL);
	ir_input_dev->input_dev = input_allocate_device();
	if (!ir \|\| !ir_input_dev \|\| !ir_input_dev->input_dev)
	goto err_out_free;

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

	ir->input = ir_input_dev;

	/* input einrichten */
	ir->props.allowed_protos = IR_TYPE_RC5 \| IR_TYPE_NEC;
	ir->props.priv = ir;
	ir->props.change_protocol = tm6000_ir_change_protocol;
	ir->props.open = tm6000_ir_start;
	ir->props.close = tm6000_ir_stop;
	ir->props.driver_type = RC_DRIVER_SCANCODE;

	ir->polling = 50;

	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(ir, IR_TYPE_UNKNOWN);
	err = ir_input_init(ir_input_dev->input_dev, &ir->ir, IR_TYPE_OTHER);
	if (err < 0)
	goto err_out_free;

	ir_input_dev->input_dev->name = ir->name;
	ir_input_dev->input_dev->phys = ir->phys;
	ir_input_dev->input_dev->id.bustype = BUS_USB;
	ir_input_dev->input_dev->id.version = 1;
	ir_input_dev->input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
	ir_input_dev->input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);

	ir_input_dev->input_dev->dev.parent = &dev->udev->dev;

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

	ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);

	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);
	goto err_out_stop;
	}
	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);
	rc = usb_submit_urb(ir->int_urb, GFP_KERNEL);
	if (rc) {
	kfree(ir->int_urb->transfer_buffer);
	usb_free_urb(ir->int_urb);
	err = rc;
	goto err_out_stop;
	}
	ir->urb_data = kzalloc(size, GFP_KERNEL);
	}

	/* ir register */
	err = ir_input_register(ir->input->input_dev, dev->ir_codes,
	&ir->props, "tm6000");
	if (err)
	goto err_out_stop;

	return 0;

	err_out_stop:
	dev->ir = NULL;
	err_out_free:
	kfree(ir_input_dev);
	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;

	ir_input_unregister(ir->input->input_dev);

	if (ir->int_urb) {
	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;
	}

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

	return 0;
	}