// SPDX-License-Identifier: GPL-2.0-only
/*
* Line 6 Linux USB driver
*
* Copyright ( C ) 2004 - 2010 Markus Grabner ( line6 @ grabner - graz . at )
*/
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <sound/core.h>
#include <sound/control.h>
#include "capture.h"
#include "driver.h"
#include "playback.h"
/*
Locate name in binary program dump
*/
#define POD_NAME_OFFSET 0
#define POD_NAME_LENGTH 16
/*
Other constants
*/
#define POD_CONTROL_SIZE 0 x80
#define POD_BUFSIZE_DUMPREQ 7
#define POD_STARTUP_DELAY 1000
/*
Stages of POD startup procedure
*/
enum {
POD_STARTUP_VERSIONREQ,
POD_STARTUP_SETUP,
POD_STARTUP_DONE,
};
enum {
LINE6_BASSPODXT,
LINE6_BASSPODXTLIVE,
LINE6_BASSPODXTPRO,
LINE6_POCKETPOD,
LINE6_PODXT,
LINE6_PODXTLIVE_POD,
LINE6_PODXTPRO,
};
struct usb_line6_pod {
/* Generic Line 6 USB data */
struct usb_line6 line6;
/* Instrument monitor level */
int monitor_level;
/* Current progress in startup procedure */
int startup_progress;
/* Serial number of device */
u32 serial_number;
/* Firmware version (x 100) */
int firmware_version;
/* Device ID */
int device_id;
};
#define line6_to_pod(x) container_of(x, struct usb_line6_pod, line6)
#define POD_SYSEX_CODE 3
/* *INDENT-OFF* */
enum {
POD_SYSEX_SAVE = 0 x24,
POD_SYSEX_SYSTEM = 0 x56,
POD_SYSEX_SYSTEMREQ = 0 x57,
/* POD_SYSEX_UPDATE = 0x6c, */ /* software update! */
POD_SYSEX_STORE = 0 x71,
POD_SYSEX_FINISH = 0 x72,
POD_SYSEX_DUMPMEM = 0 x73,
POD_SYSEX_DUMP = 0 x74,
POD_SYSEX_DUMPREQ = 0 x75
/* dumps entire internal memory of PODxt Pro */
/* POD_SYSEX_DUMPMEM2 = 0x76 */
};
enum {
POD_MONITOR_LEVEL = 0 x04,
POD_SYSTEM_INVALID = 0 x10000
};
/* *INDENT-ON* */
enum {
POD_DUMP_MEMORY = 2
};
enum {
POD_BUSY_READ,
POD_BUSY_WRITE,
POD_CHANNEL_DIRTY,
POD_SAVE_PRESSED,
POD_BUSY_MIDISEND
};
static const struct snd_ratden pod_ratden = {
.num_min = 78125 ,
.num_max = 78125 ,
.num_step = 1 ,
.den = 2
};
static struct line6_pcm_properties pod_pcm_properties = {
.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_S24_3LE,
.rates = SNDRV_PCM_RATE_KNOT,
.rate_min = 39062 ,
.rate_max = 39063 ,
.channels_min = 2 ,
.channels_max = 2 ,
.buffer_bytes_max = 60000 ,
.period_bytes_min = 64 ,
.period_bytes_max = 8192 ,
.periods_min = 1 ,
.periods_max = 1024 },
.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_S24_3LE,
.rates = SNDRV_PCM_RATE_KNOT,
.rate_min = 39062 ,
.rate_max = 39063 ,
.channels_min = 2 ,
.channels_max = 2 ,
.buffer_bytes_max = 60000 ,
.period_bytes_min = 64 ,
.period_bytes_max = 8192 ,
.periods_min = 1 ,
.periods_max = 1024 },
.rates = {
.nrats = 1 ,
.rats = &pod_ratden},
.bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
};
static const char pod_version_header[] = {
0 xf0, 0 x7e, 0 x7f, 0 x06, 0 x02
};
static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code,
int size)
{
return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code,
size);
}
/*
Process a completely received message .
*/
static void line6_pod_process_message(struct usb_line6 *line6)
{
struct usb_line6_pod *pod = line6_to_pod(line6);
const unsigned char *buf = pod->line6.buffer_message;
if (memcmp(buf, pod_version_header, sizeof (pod_version_header)) == 0 ) {
pod->firmware_version = buf[13 ] * 100 + buf[14 ] * 10 + buf[15 ];
pod->device_id = ((int )buf[8 ] << 16 ) | ((int )buf[9 ] << 8 ) |
(int ) buf[10 ];
if (pod->startup_progress == POD_STARTUP_VERSIONREQ) {
pod->startup_progress = POD_STARTUP_SETUP;
schedule_delayed_work(&line6->startup_work, 0 );
}
return ;
}
/* Only look for sysex messages from this device */
if (buf[0 ] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) &&
buf[0 ] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) {
return ;
}
if (memcmp(buf + 1 , line6_midi_id, sizeof (line6_midi_id)) != 0 )
return ;
if (buf[5 ] == POD_SYSEX_SYSTEM && buf[6 ] == POD_MONITOR_LEVEL) {
short value = ((int )buf[7 ] << 12 ) | ((int )buf[8 ] << 8 ) |
((int )buf[9 ] << 4 ) | (int )buf[10 ];
pod->monitor_level = value;
}
}
/*
Send system parameter ( from integer ) .
*/
static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
int code)
{
char *sysex;
static const int size = 5 ;
sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size);
if (!sysex)
return -ENOMEM;
sysex[SYSEX_DATA_OFS] = code;
sysex[SYSEX_DATA_OFS + 1 ] = (value >> 12 ) & 0 x0f;
sysex[SYSEX_DATA_OFS + 2 ] = (value >> 8 ) & 0 x0f;
sysex[SYSEX_DATA_OFS + 3 ] = (value >> 4 ) & 0 x0f;
sysex[SYSEX_DATA_OFS + 4 ] = (value) & 0 x0f;
line6_send_sysex_message(&pod->line6, sysex, size);
kfree(sysex);
return 0 ;
}
/*
" read " request on " serial_number " special file .
*/
static ssize_t serial_number_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_card *card = dev_to_snd_card(dev);
struct usb_line6_pod *pod = card->private_data;
return sysfs_emit(buf, "%u\n" , pod->serial_number);
}
/*
" read " request on " firmware_version " special file .
*/
static ssize_t firmware_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_card *card = dev_to_snd_card(dev);
struct usb_line6_pod *pod = card->private_data;
return sysfs_emit(buf, "%d.%02d\n" , pod->firmware_version / 100 ,
pod->firmware_version % 100 );
}
/*
" read " request on " device_id " special file .
*/
static ssize_t device_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_card *card = dev_to_snd_card(dev);
struct usb_line6_pod *pod = card->private_data;
return sysfs_emit(buf, "%d\n" , pod->device_id);
}
/*
POD startup procedure .
This is a sequence of functions with special requirements ( e . g . , must
not run immediately after initialization , must not run in interrupt
context ) . After the last one has finished , the device is ready to use .
*/
static void pod_startup(struct usb_line6 *line6)
{
struct usb_line6_pod *pod = line6_to_pod(line6);
switch (pod->startup_progress) {
case POD_STARTUP_VERSIONREQ:
/* request firmware version: */
line6_version_request_async(line6);
break ;
case POD_STARTUP_SETUP:
/* serial number: */
line6_read_serial_number(&pod->line6, &pod->serial_number);
/* ALSA audio interface: */
if (snd_card_register(line6->card))
dev_err(line6->ifcdev, "Failed to register POD card.\n" );
pod->startup_progress = POD_STARTUP_DONE;
break ;
default :
break ;
}
}
/* POD special files: */
static DEVICE_ATTR_RO(device_id);
static DEVICE_ATTR_RO(firmware_version);
static DEVICE_ATTR_RO(serial_number);
static struct attribute *pod_dev_attrs[] = {
&dev_attr_device_id.attr,
&dev_attr_firmware_version.attr,
&dev_attr_serial_number.attr,
NULL
};
static const struct attribute_group pod_dev_attr_group = {
.name = "pod" ,
.attrs = pod_dev_attrs,
};
/* control info callback */
static int snd_pod_control_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 = 65535 ;
return 0 ;
}
/* control get callback */
static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6);
ucontrol->value.integer.value[0 ] = pod->monitor_level;
return 0 ;
}
/* control put callback */
static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6);
if (ucontrol->value.integer.value[0 ] == pod->monitor_level)
return 0 ;
pod->monitor_level = ucontrol->value.integer.value[0 ];
pod_set_system_param_int(pod, ucontrol->value.integer.value[0 ],
POD_MONITOR_LEVEL);
return 1 ;
}
/* control definition */
static const struct snd_kcontrol_new pod_control_monitor = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Monitor Playback Volume" ,
.index = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_pod_control_monitor_info,
.get = snd_pod_control_monitor_get,
.put = snd_pod_control_monitor_put
};
/*
Try to init POD device .
*/
static int pod_init(struct usb_line6 *line6,
const struct usb_device_id *id)
{
int err;
struct usb_line6_pod *pod = line6_to_pod(line6);
line6->process_message = line6_pod_process_message;
line6->startup = pod_startup;
/* create sysfs entries: */
err = snd_card_add_dev_attr(line6->card, &pod_dev_attr_group);
if (err < 0 )
return err;
/* initialize PCM subsystem: */
err = line6_init_pcm(line6, &pod_pcm_properties);
if (err < 0 )
return err;
/* register monitor control: */
err = snd_ctl_add(line6->card,
snd_ctl_new1(&pod_control_monitor, line6->line6pcm));
if (err < 0 )
return err;
/*
When the sound card is registered at this point , the PODxt Live
displays " Invalid Code Error 07 " , so we do it later in the event
handler .
*/
if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
pod->monitor_level = POD_SYSTEM_INVALID;
/* initiate startup procedure: */
schedule_delayed_work(&line6->startup_work,
msecs_to_jiffies(POD_STARTUP_DELAY));
}
return 0 ;
}
#define LINE6_DEVICE(prod) USB_DEVICE(0 x0e41, prod)
#define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0 x0e41, prod, n)
/* table of devices that work with this driver */
static const struct usb_device_id pod_id_table[] = {
{ LINE6_DEVICE(0 x4250), .driver_info = LINE6_BASSPODXT },
{ LINE6_DEVICE(0 x4642), .driver_info = LINE6_BASSPODXTLIVE },
{ LINE6_DEVICE(0 x4252), .driver_info = LINE6_BASSPODXTPRO },
{ LINE6_IF_NUM(0 x5051, 1 ), .driver_info = LINE6_POCKETPOD },
{ LINE6_DEVICE(0 x5044), .driver_info = LINE6_PODXT },
{ LINE6_IF_NUM(0 x4650, 0 ), .driver_info = LINE6_PODXTLIVE_POD },
{ LINE6_DEVICE(0 x5050), .driver_info = LINE6_PODXTPRO },
{}
};
MODULE_DEVICE_TABLE(usb, pod_id_table);
static const struct line6_properties pod_properties_table[] = {
[LINE6_BASSPODXT] = {
.id = "BassPODxt" ,
.name = "BassPODxt" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5 ,
.ep_ctrl_r = 0 x84,
.ep_ctrl_w = 0 x03,
.ep_audio_r = 0 x82,
.ep_audio_w = 0 x01,
},
[LINE6_BASSPODXTLIVE] = {
.id = "BassPODxtLive" ,
.name = "BassPODxt Live" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 1 ,
.ep_ctrl_r = 0 x84,
.ep_ctrl_w = 0 x03,
.ep_audio_r = 0 x82,
.ep_audio_w = 0 x01,
},
[LINE6_BASSPODXTPRO] = {
.id = "BassPODxtPro" ,
.name = "BassPODxt Pro" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5 ,
.ep_ctrl_r = 0 x84,
.ep_ctrl_w = 0 x03,
.ep_audio_r = 0 x82,
.ep_audio_w = 0 x01,
},
[LINE6_POCKETPOD] = {
.id = "PocketPOD" ,
.name = "Pocket POD" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI,
.altsetting = 0 ,
.ep_ctrl_r = 0 x82,
.ep_ctrl_w = 0 x02,
/* no audio channel */
},
[LINE6_PODXT] = {
.id = "PODxt" ,
.name = "PODxt" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5 ,
.ep_ctrl_r = 0 x84,
.ep_ctrl_w = 0 x03,
.ep_audio_r = 0 x82,
.ep_audio_w = 0 x01,
},
[LINE6_PODXTLIVE_POD] = {
.id = "PODxtLive" ,
.name = "PODxt Live" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 1 ,
.ep_ctrl_r = 0 x84,
.ep_ctrl_w = 0 x03,
.ep_audio_r = 0 x82,
.ep_audio_w = 0 x01,
},
[LINE6_PODXTPRO] = {
.id = "PODxtPro" ,
.name = "PODxt Pro" ,
.capabilities = LINE6_CAP_CONTROL
| LINE6_CAP_CONTROL_MIDI
| LINE6_CAP_PCM
| LINE6_CAP_HWMON,
.altsetting = 5 ,
.ep_ctrl_r = 0 x84,
.ep_ctrl_w = 0 x03,
.ep_audio_r = 0 x82,
.ep_audio_w = 0 x01,
},
};
/*
Probe USB device .
*/
static int pod_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
return line6_probe(interface, id, "Line6-POD" ,
&pod_properties_table[id->driver_info],
pod_init, sizeof (struct usb_line6_pod));
}
static struct usb_driver pod_driver = {
.name = KBUILD_MODNAME,
.probe = pod_probe,
.disconnect = line6_disconnect,
#ifdef CONFIG_PM
.suspend = line6_suspend,
.resume = line6_resume,
.reset_resume = line6_resume,
#endif
.id_table = pod_id_table,
};
module_usb_driver(pod_driver);
MODULE_DESCRIPTION("Line 6 POD USB driver" );
MODULE_LICENSE("GPL" );
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