sound/usb/line6/toneport.c - kernel/msm-4.19 - Gitiles

 /*
  * Line 6 Linux USB driver
  *
  * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
  *                         Emil Myhrman (emil.myhrman@gmail.com)
  *
  *	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.
  *
  */

 #include <linux/wait.h>
 #include <linux/usb.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/leds.h>
 #include <sound/core.h>
 #include <sound/control.h>

 #include "capture.h"
 #include "driver.h"
 #include "playback.h"
 #include "usbdefs.h"

 enum line6_device_type {
 	LINE6_GUITARPORT,
 	LINE6_PODSTUDIO_GX,
 	LINE6_PODSTUDIO_UX1,
 	LINE6_PODSTUDIO_UX2,
 	LINE6_TONEPORT_GX,
 	LINE6_TONEPORT_UX1,
 	LINE6_TONEPORT_UX2,
 };

 struct usb_line6_toneport;

 struct toneport_led {
 	struct led_classdev dev;
 	char name[64];
 	struct usb_line6_toneport *toneport;
 	bool registered;
 };

 struct usb_line6_toneport {
 	/**
 		Generic Line 6 USB data.
 	*/
 	struct usb_line6 line6;

 	/**
 		Source selector.
 	*/
 	int source;

 	/**
 		Serial number of device.
 	*/
 	int serial_number;

 	/**
 		Firmware version (x 100).
 	*/
 	int firmware_version;

 	/**
 		 Timer for delayed PCM startup.
 	*/
 	struct timer_list timer;

 	/**
 		 Device type.
 	*/
 	enum line6_device_type type;

 	/* LED instances */
 	struct toneport_led leds[2];
 };

 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);

 #define TONEPORT_PCM_DELAY 1

 static struct snd_ratden toneport_ratden = {
 	.num_min = 44100,
 	.num_max = 44100,
 	.num_step = 1,
 	.den = 1
 };

 static struct line6_pcm_properties toneport_pcm_properties = {
 	.snd_line6_playback_hw = {
 				  .info = (SNDRV_PCM_INFO_MMAP |
 					   SNDRV_PCM_INFO_INTERLEAVED |
 					   SNDRV_PCM_INFO_BLOCK_TRANSFER |
 					   SNDRV_PCM_INFO_MMAP_VALID |
 					   SNDRV_PCM_INFO_PAUSE |
 					   SNDRV_PCM_INFO_SYNC_START),
 				  .formats = SNDRV_PCM_FMTBIT_S16_LE,
 				  .rates = SNDRV_PCM_RATE_KNOT,
 				  .rate_min = 44100,
 				  .rate_max = 44100,
 				  .channels_min = 2,
 				  .channels_max = 2,
 				  .buffer_bytes_max = 60000,
 				  .period_bytes_min = 64,
 				  .period_bytes_max = 8192,
 				  .periods_min = 1,
 				  .periods_max = 1024},
 	.snd_line6_capture_hw = {
 				 .info = (SNDRV_PCM_INFO_MMAP |
 					  SNDRV_PCM_INFO_INTERLEAVED |
 					  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 					  SNDRV_PCM_INFO_MMAP_VALID |
 					  SNDRV_PCM_INFO_SYNC_START),
 				 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 				 .rates = SNDRV_PCM_RATE_KNOT,
 				 .rate_min = 44100,
 				 .rate_max = 44100,
 				 .channels_min = 2,
 				 .channels_max = 2,
 				 .buffer_bytes_max = 60000,
 				 .period_bytes_min = 64,
 				 .period_bytes_max = 8192,
 				 .periods_min = 1,
 				 .periods_max = 1024},
 	.snd_line6_rates = {
 			    .nrats = 1,
 			    .rats = &toneport_ratden},
 	.bytes_per_frame = 4
 };

 static const struct {
 	const char *name;
 	int code;
 } toneport_source_info[] = {
 	{"Microphone", 0x0a01},
 	{"Line", 0x0801},
 	{"Instrument", 0x0b01},
 	{"Inst & Mic", 0x0901}
 };

 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
 {
 	int ret;

 	ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 			      cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);

 	if (ret < 0) {
 		dev_err(&usbdev->dev, "send failed (error %d)\n", ret);
 		return ret;
 	}

 	return 0;
 }

 /* monitor info callback */
 static int snd_toneport_monitor_info(struct snd_kcontrol *kcontrol,
 				     struct snd_ctl_elem_info *uinfo)
 {
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 	uinfo->count = 1;
 	uinfo->value.integer.min = 0;
 	uinfo->value.integer.max = 256;
 	return 0;
 }

 /* monitor get callback */
 static int snd_toneport_monitor_get(struct snd_kcontrol *kcontrol,
 				    struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);

 	ucontrol->value.integer.value[0] = line6pcm->volume_monitor;
 	return 0;
 }

 /* monitor put callback */
 static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol,
 				    struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);

 	if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor)
 		return 0;

 	line6pcm->volume_monitor = ucontrol->value.integer.value[0];

 	if (line6pcm->volume_monitor > 0)
 		line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_MONITOR);
 	else
 		line6_pcm_release(line6pcm, LINE6_BITS_PCM_MONITOR);

 	return 1;
 }

 /* source info callback */
 static int snd_toneport_source_info(struct snd_kcontrol *kcontrol,
 				    struct snd_ctl_elem_info *uinfo)
 {
 	const int size = ARRAY_SIZE(toneport_source_info);

 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 	uinfo->count = 1;
 	uinfo->value.enumerated.items = size;

 	if (uinfo->value.enumerated.item >= size)
 		uinfo->value.enumerated.item = size - 1;

 	strcpy(uinfo->value.enumerated.name,
 	       toneport_source_info[uinfo->value.enumerated.item].name);

 	return 0;
 }

 /* source get callback */
 static int snd_toneport_source_get(struct snd_kcontrol *kcontrol,
 				   struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 	struct usb_line6_toneport *toneport =
 	    (struct usb_line6_toneport *)line6pcm->line6;
 	ucontrol->value.enumerated.item[0] = toneport->source;
 	return 0;
 }

 /* source put callback */
 static int snd_toneport_source_put(struct snd_kcontrol *kcontrol,
 				   struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 	struct usb_line6_toneport *toneport =
 	    (struct usb_line6_toneport *)line6pcm->line6;
 	unsigned int source;

 	source = ucontrol->value.enumerated.item[0];
 	if (source >= ARRAY_SIZE(toneport_source_info))
 		return -EINVAL;
 	if (source == toneport->source)
 		return 0;

 	toneport->source = source;
 	toneport_send_cmd(toneport->line6.usbdev,
 			  toneport_source_info[source].code, 0x0000);
 	return 1;
 }

 static void toneport_start_pcm(unsigned long arg)
 {
 	struct usb_line6_toneport *toneport = (struct usb_line6_toneport *)arg;
 	struct usb_line6 *line6 = &toneport->line6;

 	line6_pcm_acquire(line6->line6pcm, LINE6_BITS_PCM_MONITOR);
 }

 /* control definition */
 static struct snd_kcontrol_new toneport_control_monitor = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "Monitor Playback Volume",
 	.index = 0,
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 	.info = snd_toneport_monitor_info,
 	.get = snd_toneport_monitor_get,
 	.put = snd_toneport_monitor_put
 };

 /* source selector definition */
 static struct snd_kcontrol_new toneport_control_source = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "PCM Capture Source",
 	.index = 0,
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 	.info = snd_toneport_source_info,
 	.get = snd_toneport_source_get,
 	.put = snd_toneport_source_put
 };

 /*
 	For the led on Guitarport.
 	Brightness goes from 0x00 to 0x26. Set a value above this to have led
 	blink.
 	(void cmd_0x02(byte red, byte green)
 */

 static bool toneport_has_led(enum line6_device_type type)
 {
 	return
 	    (type == LINE6_GUITARPORT) ||
 	    (type == LINE6_TONEPORT_GX);
 	/* add your device here if you are missing support for the LEDs */
 }

 static const char * const led_colors[2] = { "red", "green" };
 static const int led_init_vals[2] = { 0x00, 0x26 };

 static void toneport_update_led(struct usb_line6_toneport *toneport)
 {
 	toneport_send_cmd(toneport->line6.usbdev,
 			  (toneport->leds[0].dev.brightness << 8) | 0x0002,
 			  toneport->leds[1].dev.brightness);
 }

 static void toneport_led_brightness_set(struct led_classdev *led_cdev,
 					enum led_brightness brightness)
 {
 	struct toneport_led *leds =
 		container_of(led_cdev, struct toneport_led, dev);
 	toneport_update_led(leds->toneport);
 }

 static int toneport_init_leds(struct usb_line6_toneport *toneport)
 {
 	struct device *dev = &toneport->line6.usbdev->dev;
 	int i, err;

 	for (i = 0; i < 2; i++) {
 		struct toneport_led *led = &toneport->leds[i];
 		struct led_classdev *leddev = &led->dev;

 		led->toneport = toneport;
 		snprintf(led->name, sizeof(led->name), "%s::%s",
 			 dev_name(dev), led_colors[i]);
 		leddev->name = led->name;
 		leddev->brightness = led_init_vals[i];
 		leddev->max_brightness = 0x26;
 		leddev->brightness_set = toneport_led_brightness_set;
 		err = led_classdev_register(dev, leddev);
 		if (err)
 			return err;
 		led->registered = true;
 	}

 	return 0;
 }

 static void toneport_remove_leds(struct usb_line6_toneport *toneport)
 {
 	struct toneport_led *led;
 	int i;

 	for (i = 0; i < 2; i++) {
 		led = &toneport->leds[i];
 		if (!led->registered)
 			break;
 		led_classdev_unregister(&led->dev);
 		led->registered = false;
 	}
 }

 /*
 	Setup Toneport device.
 */
 static void toneport_setup(struct usb_line6_toneport *toneport)
 {
 	int ticks;
 	struct usb_line6 *line6 = &toneport->line6;
 	struct usb_device *usbdev = line6->usbdev;

 	/* sync time on device with host: */
 	ticks = (int)get_seconds();
 	line6_write_data(line6, 0x80c6, &ticks, 4);

 	/* enable device: */
 	toneport_send_cmd(usbdev, 0x0301, 0x0000);

 	/* initialize source select: */
 	switch (toneport->type) {
 	case LINE6_TONEPORT_UX1:
 	case LINE6_TONEPORT_UX2:
 	case LINE6_PODSTUDIO_UX1:
 	case LINE6_PODSTUDIO_UX2:
 		toneport_send_cmd(usbdev,
 				  toneport_source_info[toneport->source].code,
 				  0x0000);
 	default:
 		break;
 	}

 	if (toneport_has_led(toneport->type))
 		toneport_update_led(toneport);

 	mod_timer(&toneport->timer, jiffies + TONEPORT_PCM_DELAY * HZ);
 }

 /*
 	Toneport device disconnected.
 */
 static void line6_toneport_disconnect(struct usb_line6 *line6)
 {
 	struct usb_line6_toneport *toneport =
 		(struct usb_line6_toneport *)line6;

 	del_timer_sync(&toneport->timer);

 	if (toneport_has_led(toneport->type))
 		toneport_remove_leds(toneport);
 }


 /*
 	 Try to init Toneport device.
 */
 static int toneport_init(struct usb_line6 *line6,
 			 const struct usb_device_id *id)
 {
 	int err;
 	struct usb_line6_toneport *toneport =  (struct usb_line6_toneport *) line6;

 	toneport->type = id->driver_info;
 	setup_timer(&toneport->timer, toneport_start_pcm,
 		    (unsigned long)toneport);

 	line6->disconnect = line6_toneport_disconnect;

 	/* initialize PCM subsystem: */
 	err = line6_init_pcm(line6, &toneport_pcm_properties);
 	if (err < 0)
 		return err;

 	/* register monitor control: */
 	err = snd_ctl_add(line6->card,
 			  snd_ctl_new1(&toneport_control_monitor,
 				       line6->line6pcm));
 	if (err < 0)
 		return err;

 	/* register source select control: */
 	switch (toneport->type) {
 	case LINE6_TONEPORT_UX1:
 	case LINE6_TONEPORT_UX2:
 	case LINE6_PODSTUDIO_UX1:
 	case LINE6_PODSTUDIO_UX2:
 		err =
 		    snd_ctl_add(line6->card,
 				snd_ctl_new1(&toneport_control_source,
 					     line6->line6pcm));
 		if (err < 0)
 			return err;

 	default:
 		break;
 	}

 	line6_read_serial_number(line6, &toneport->serial_number);
 	line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);

 	if (toneport_has_led(toneport->type)) {
 		err = toneport_init_leds(toneport);
 		if (err < 0)
 			return err;
 	}

 	toneport_setup(toneport);

 	/* register audio system: */
 	return snd_card_register(line6->card);
 }

 #ifdef CONFIG_PM
 /*
 	Resume Toneport device after reset.
 */
 static int toneport_reset_resume(struct usb_interface *interface)
 {
 	toneport_setup(usb_get_intfdata(interface));
 	return line6_resume(interface);
 }
 #endif

 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)

 /* table of devices that work with this driver */
 static const struct usb_device_id toneport_id_table[] = {
 	{ LINE6_DEVICE(0x4750),    .driver_info = LINE6_GUITARPORT },
 	{ LINE6_DEVICE(0x4153),    .driver_info = LINE6_PODSTUDIO_GX },
 	{ LINE6_DEVICE(0x4150),    .driver_info = LINE6_PODSTUDIO_UX1 },
 	{ LINE6_IF_NUM(0x4151, 0), .driver_info = LINE6_PODSTUDIO_UX2 },
 	{ LINE6_DEVICE(0x4147),    .driver_info = LINE6_TONEPORT_GX },
 	{ LINE6_DEVICE(0x4141),    .driver_info = LINE6_TONEPORT_UX1 },
 	{ LINE6_IF_NUM(0x4142, 0), .driver_info = LINE6_TONEPORT_UX2 },
 	{}
 };

 MODULE_DEVICE_TABLE(usb, toneport_id_table);

 static const struct line6_properties toneport_properties_table[] = {
 	[LINE6_GUITARPORT] = {
 		.id = "GuitarPort",
 		.name = "GuitarPort",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* 1..4 seem to be ok */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 	[LINE6_PODSTUDIO_GX] = {
 		.id = "PODStudioGX",
 		.name = "POD Studio GX",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* 1..4 seem to be ok */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 	[LINE6_PODSTUDIO_UX1] = {
 		.id = "PODStudioUX1",
 		.name = "POD Studio UX1",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* 1..4 seem to be ok */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 	[LINE6_PODSTUDIO_UX2] = {
 		.id = "PODStudioUX2",
 		.name = "POD Studio UX2",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* defaults to 44.1kHz, 16-bit */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 	[LINE6_TONEPORT_GX] = {
 		.id = "TonePortGX",
 		.name = "TonePort GX",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* 1..4 seem to be ok */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 	[LINE6_TONEPORT_UX1] = {
 		.id = "TonePortUX1",
 		.name = "TonePort UX1",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* 1..4 seem to be ok */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 	[LINE6_TONEPORT_UX2] = {
 		.id = "TonePortUX2",
 		.name = "TonePort UX2",
 		.capabilities	= LINE6_CAP_PCM,
 		.altsetting = 2,  /* defaults to 44.1kHz, 16-bit */
 		/* no control channel */
 		.ep_audio_r = 0x82,
 		.ep_audio_w = 0x01,
 	},
 };

 /*
 	Probe USB device.
 */
 static int toneport_probe(struct usb_interface *interface,
 			  const struct usb_device_id *id)
 {
 	struct usb_line6_toneport *toneport;

 	toneport = kzalloc(sizeof(*toneport), GFP_KERNEL);
 	if (!toneport)
 		return -ENODEV;
 	return line6_probe(interface, id, &toneport->line6,
 			   &toneport_properties_table[id->driver_info],
 			   toneport_init);
 }

 static struct usb_driver toneport_driver = {
 	.name = KBUILD_MODNAME,
 	.probe = toneport_probe,
 	.disconnect = line6_disconnect,
 #ifdef CONFIG_PM
 	.suspend = line6_suspend,
 	.resume = line6_resume,
 	.reset_resume = toneport_reset_resume,
 #endif
 	.id_table = toneport_id_table,
 };

 module_usb_driver(toneport_driver);

 MODULE_DESCRIPTION("TonePort USB driver");
 MODULE_LICENSE("GPL");
	/*
	* Line 6 Linux USB driver
	*
	* Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
	* Emil Myhrman (emil.myhrman@gmail.com)
	*
	* 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.
	*
	*/

	#include <linux/wait.h>
	#include <linux/usb.h>
	#include <linux/slab.h>
	#include <linux/module.h>
	#include <linux/leds.h>
	#include <sound/core.h>
	#include <sound/control.h>

	#include "capture.h"
	#include "driver.h"
	#include "playback.h"
	#include "usbdefs.h"

	enum line6_device_type {
	LINE6_GUITARPORT,
	LINE6_PODSTUDIO_GX,
	LINE6_PODSTUDIO_UX1,
	LINE6_PODSTUDIO_UX2,
	LINE6_TONEPORT_GX,
	LINE6_TONEPORT_UX1,
	LINE6_TONEPORT_UX2,
	};

	struct usb_line6_toneport;

	struct toneport_led {
	struct led_classdev dev;
	char name[64];
	struct usb_line6_toneport *toneport;
	bool registered;
	};

	struct usb_line6_toneport {
	/**
	Generic Line 6 USB data.
	*/
	struct usb_line6 line6;

	/**
	Source selector.
	*/
	int source;

	/**
	Serial number of device.
	*/
	int serial_number;

	/**
	Firmware version (x 100).
	*/
	int firmware_version;

	/**
	Timer for delayed PCM startup.
	*/
	struct timer_list timer;

	/**
	Device type.
	*/
	enum line6_device_type type;

	/* LED instances */
	struct toneport_led leds[2];
	};

	static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);

	#define TONEPORT_PCM_DELAY 1

	static struct snd_ratden toneport_ratden = {
	.num_min = 44100,
	.num_max = 44100,
	.num_step = 1,
	.den = 1
	};

	static struct line6_pcm_properties toneport_pcm_properties = {
	.snd_line6_playback_hw = {
	.info = (SNDRV_PCM_INFO_MMAP \|
	SNDRV_PCM_INFO_INTERLEAVED \|
	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	SNDRV_PCM_INFO_MMAP_VALID \|
	SNDRV_PCM_INFO_PAUSE \|
	SNDRV_PCM_INFO_SYNC_START),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	.rates = SNDRV_PCM_RATE_KNOT,
	.rate_min = 44100,
	.rate_max = 44100,
	.channels_min = 2,
	.channels_max = 2,
	.buffer_bytes_max = 60000,
	.period_bytes_min = 64,
	.period_bytes_max = 8192,
	.periods_min = 1,
	.periods_max = 1024},
	.snd_line6_capture_hw = {
	.info = (SNDRV_PCM_INFO_MMAP \|
	SNDRV_PCM_INFO_INTERLEAVED \|
	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	SNDRV_PCM_INFO_MMAP_VALID \|
	SNDRV_PCM_INFO_SYNC_START),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	.rates = SNDRV_PCM_RATE_KNOT,
	.rate_min = 44100,
	.rate_max = 44100,
	.channels_min = 2,
	.channels_max = 2,
	.buffer_bytes_max = 60000,
	.period_bytes_min = 64,
	.period_bytes_max = 8192,
	.periods_min = 1,
	.periods_max = 1024},
	.snd_line6_rates = {
	.nrats = 1,
	.rats = &toneport_ratden},
	.bytes_per_frame = 4
	};

	static const struct {
	const char *name;
	int code;
	} toneport_source_info[] = {
	{"Microphone", 0x0a01},
	{"Line", 0x0801},
	{"Instrument", 0x0b01},
	{"Inst & Mic", 0x0901}
	};

	static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
	{
	int ret;

	ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
	USB_TYPE_VENDOR \| USB_RECIP_DEVICE \| USB_DIR_OUT,
	cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);

	if (ret < 0) {
	dev_err(&usbdev->dev, "send failed (error %d)\n", ret);
	return ret;
	}

	return 0;
	}

	/* monitor info callback */
	static int snd_toneport_monitor_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
	{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 256;
	return 0;
	}

	/* monitor get callback */
	static int snd_toneport_monitor_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = line6pcm->volume_monitor;
	return 0;
	}

	/* monitor put callback */
	static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);

	if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor)
	return 0;

	line6pcm->volume_monitor = ucontrol->value.integer.value[0];

	if (line6pcm->volume_monitor > 0)
	line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_MONITOR);
	else
	line6_pcm_release(line6pcm, LINE6_BITS_PCM_MONITOR);

	return 1;
	}

	/* source info callback */
	static int snd_toneport_source_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
	{
	const int size = ARRAY_SIZE(toneport_source_info);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = size;

	if (uinfo->value.enumerated.item >= size)
	uinfo->value.enumerated.item = size - 1;

	strcpy(uinfo->value.enumerated.name,
	toneport_source_info[uinfo->value.enumerated.item].name);

	return 0;
	}

	/* source get callback */
	static int snd_toneport_source_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
	struct usb_line6_toneport *toneport =
	(struct usb_line6_toneport *)line6pcm->line6;
	ucontrol->value.enumerated.item[0] = toneport->source;
	return 0;
	}

	/* source put callback */
	static int snd_toneport_source_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
	struct usb_line6_toneport *toneport =
	(struct usb_line6_toneport *)line6pcm->line6;
	unsigned int source;

	source = ucontrol->value.enumerated.item[0];
	if (source >= ARRAY_SIZE(toneport_source_info))
	return -EINVAL;
	if (source == toneport->source)
	return 0;

	toneport->source = source;
	toneport_send_cmd(toneport->line6.usbdev,
	toneport_source_info[source].code, 0x0000);
	return 1;
	}

	static void toneport_start_pcm(unsigned long arg)
	{
	struct usb_line6_toneport toneport = (struct usb_line6_toneport )arg;
	struct usb_line6 *line6 = &toneport->line6;

	line6_pcm_acquire(line6->line6pcm, LINE6_BITS_PCM_MONITOR);
	}

	/* control definition */
	static struct snd_kcontrol_new toneport_control_monitor = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Monitor Playback Volume",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = snd_toneport_monitor_info,
	.get = snd_toneport_monitor_get,
	.put = snd_toneport_monitor_put
	};

	/* source selector definition */
	static struct snd_kcontrol_new toneport_control_source = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "PCM Capture Source",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = snd_toneport_source_info,
	.get = snd_toneport_source_get,
	.put = snd_toneport_source_put
	};

	/*
	For the led on Guitarport.
	Brightness goes from 0x00 to 0x26. Set a value above this to have led
	blink.
	(void cmd_0x02(byte red, byte green)
	*/

	static bool toneport_has_led(enum line6_device_type type)
	{
	return
	(type == LINE6_GUITARPORT) \|\|
	(type == LINE6_TONEPORT_GX);
	/* add your device here if you are missing support for the LEDs */
	}

	static const char * const led_colors[2] = { "red", "green" };
	static const int led_init_vals[2] = { 0x00, 0x26 };

	static void toneport_update_led(struct usb_line6_toneport *toneport)
	{
	toneport_send_cmd(toneport->line6.usbdev,
	(toneport->leds[0].dev.brightness << 8) \| 0x0002,
	toneport->leds[1].dev.brightness);
	}

	static void toneport_led_brightness_set(struct led_classdev *led_cdev,
	enum led_brightness brightness)
	{
	struct toneport_led *leds =
	container_of(led_cdev, struct toneport_led, dev);
	toneport_update_led(leds->toneport);
	}

	static int toneport_init_leds(struct usb_line6_toneport *toneport)
	{
	struct device *dev = &toneport->line6.usbdev->dev;
	int i, err;

	for (i = 0; i < 2; i++) {
	struct toneport_led *led = &toneport->leds[i];
	struct led_classdev *leddev = &led->dev;

	led->toneport = toneport;
	snprintf(led->name, sizeof(led->name), "%s::%s",
	dev_name(dev), led_colors[i]);
	leddev->name = led->name;
	leddev->brightness = led_init_vals[i];
	leddev->max_brightness = 0x26;
	leddev->brightness_set = toneport_led_brightness_set;
	err = led_classdev_register(dev, leddev);
	if (err)
	return err;
	led->registered = true;
	}

	return 0;
	}

	static void toneport_remove_leds(struct usb_line6_toneport *toneport)
	{
	struct toneport_led *led;
	int i;

	for (i = 0; i < 2; i++) {
	led = &toneport->leds[i];
	if (!led->registered)
	break;
	led_classdev_unregister(&led->dev);
	led->registered = false;
	}
	}

	/*
	Setup Toneport device.
	*/
	static void toneport_setup(struct usb_line6_toneport *toneport)
	{
	int ticks;
	struct usb_line6 *line6 = &toneport->line6;
	struct usb_device *usbdev = line6->usbdev;

	/* sync time on device with host: */
	ticks = (int)get_seconds();
	line6_write_data(line6, 0x80c6, &ticks, 4);

	/* enable device: */
	toneport_send_cmd(usbdev, 0x0301, 0x0000);

	/* initialize source select: */
	switch (toneport->type) {
	case LINE6_TONEPORT_UX1:
	case LINE6_TONEPORT_UX2:
	case LINE6_PODSTUDIO_UX1:
	case LINE6_PODSTUDIO_UX2:
	toneport_send_cmd(usbdev,
	toneport_source_info[toneport->source].code,
	0x0000);
	default:
	break;
	}

	if (toneport_has_led(toneport->type))
	toneport_update_led(toneport);

	mod_timer(&toneport->timer, jiffies + TONEPORT_PCM_DELAY * HZ);
	}

	/*
	Toneport device disconnected.
	*/
	static void line6_toneport_disconnect(struct usb_line6 *line6)
	{
	struct usb_line6_toneport *toneport =
	(struct usb_line6_toneport *)line6;

	del_timer_sync(&toneport->timer);

	if (toneport_has_led(toneport->type))
	toneport_remove_leds(toneport);
	}


	/*
	Try to init Toneport device.
	*/
	static int toneport_init(struct usb_line6 *line6,
	const struct usb_device_id *id)
	{
	int err;
	struct usb_line6_toneport toneport = (struct usb_line6_toneport ) line6;

	toneport->type = id->driver_info;
	setup_timer(&toneport->timer, toneport_start_pcm,
	(unsigned long)toneport);

	line6->disconnect = line6_toneport_disconnect;

	/* initialize PCM subsystem: */
	err = line6_init_pcm(line6, &toneport_pcm_properties);
	if (err < 0)
	return err;

	/* register monitor control: */
	err = snd_ctl_add(line6->card,
	snd_ctl_new1(&toneport_control_monitor,
	line6->line6pcm));
	if (err < 0)
	return err;

	/* register source select control: */
	switch (toneport->type) {
	case LINE6_TONEPORT_UX1:
	case LINE6_TONEPORT_UX2:
	case LINE6_PODSTUDIO_UX1:
	case LINE6_PODSTUDIO_UX2:
	err =
	snd_ctl_add(line6->card,
	snd_ctl_new1(&toneport_control_source,
	line6->line6pcm));
	if (err < 0)
	return err;

	default:
	break;
	}

	line6_read_serial_number(line6, &toneport->serial_number);
	line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);

	if (toneport_has_led(toneport->type)) {
	err = toneport_init_leds(toneport);
	if (err < 0)
	return err;
	}

	toneport_setup(toneport);

	/* register audio system: */
	return snd_card_register(line6->card);
	}

	#ifdef CONFIG_PM
	/*
	Resume Toneport device after reset.
	*/
	static int toneport_reset_resume(struct usb_interface *interface)
	{
	toneport_setup(usb_get_intfdata(interface));
	return line6_resume(interface);
	}
	#endif

	#define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
	#define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)

	/* table of devices that work with this driver */
	static const struct usb_device_id toneport_id_table[] = {
	{ LINE6_DEVICE(0x4750), .driver_info = LINE6_GUITARPORT },
	{ LINE6_DEVICE(0x4153), .driver_info = LINE6_PODSTUDIO_GX },
	{ LINE6_DEVICE(0x4150), .driver_info = LINE6_PODSTUDIO_UX1 },
	{ LINE6_IF_NUM(0x4151, 0), .driver_info = LINE6_PODSTUDIO_UX2 },
	{ LINE6_DEVICE(0x4147), .driver_info = LINE6_TONEPORT_GX },
	{ LINE6_DEVICE(0x4141), .driver_info = LINE6_TONEPORT_UX1 },
	{ LINE6_IF_NUM(0x4142, 0), .driver_info = LINE6_TONEPORT_UX2 },
	{}
	};

	MODULE_DEVICE_TABLE(usb, toneport_id_table);

	static const struct line6_properties toneport_properties_table[] = {
	[LINE6_GUITARPORT] = {
	.id = "GuitarPort",
	.name = "GuitarPort",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* 1..4 seem to be ok */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	[LINE6_PODSTUDIO_GX] = {
	.id = "PODStudioGX",
	.name = "POD Studio GX",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* 1..4 seem to be ok */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	[LINE6_PODSTUDIO_UX1] = {
	.id = "PODStudioUX1",
	.name = "POD Studio UX1",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* 1..4 seem to be ok */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	[LINE6_PODSTUDIO_UX2] = {
	.id = "PODStudioUX2",
	.name = "POD Studio UX2",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* defaults to 44.1kHz, 16-bit */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	[LINE6_TONEPORT_GX] = {
	.id = "TonePortGX",
	.name = "TonePort GX",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* 1..4 seem to be ok */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	[LINE6_TONEPORT_UX1] = {
	.id = "TonePortUX1",
	.name = "TonePort UX1",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* 1..4 seem to be ok */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	[LINE6_TONEPORT_UX2] = {
	.id = "TonePortUX2",
	.name = "TonePort UX2",
	.capabilities = LINE6_CAP_PCM,
	.altsetting = 2, /* defaults to 44.1kHz, 16-bit */
	/* no control channel */
	.ep_audio_r = 0x82,
	.ep_audio_w = 0x01,
	},
	};

	/*
	Probe USB device.
	*/
	static int toneport_probe(struct usb_interface *interface,
	const struct usb_device_id *id)
	{
	struct usb_line6_toneport *toneport;

	toneport = kzalloc(sizeof(*toneport), GFP_KERNEL);
	if (!toneport)
	return -ENODEV;
	return line6_probe(interface, id, &toneport->line6,
	&toneport_properties_table[id->driver_info],
	toneport_init);
	}

	static struct usb_driver toneport_driver = {
	.name = KBUILD_MODNAME,
	.probe = toneport_probe,
	.disconnect = line6_disconnect,
	#ifdef CONFIG_PM
	.suspend = line6_suspend,
	.resume = line6_resume,
	.reset_resume = toneport_reset_resume,
	#endif
	.id_table = toneport_id_table,
	};

	module_usb_driver(toneport_driver);

	MODULE_DESCRIPTION("TonePort USB driver");
	MODULE_LICENSE("GPL");