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![Aditya Pakki](/assets/img/avatar_default.png)
The fix checks if snd_card_register() fails, and if so logs the error via dev_err() consistent with other patches. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de>
590 lines
14 KiB
C
590 lines
14 KiB
C
/*
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* Line 6 Linux USB driver
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*
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* Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <sound/core.h>
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#include <sound/control.h>
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#include "capture.h"
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#include "driver.h"
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#include "playback.h"
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/*
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Locate name in binary program dump
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*/
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#define POD_NAME_OFFSET 0
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#define POD_NAME_LENGTH 16
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/*
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Other constants
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*/
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#define POD_CONTROL_SIZE 0x80
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#define POD_BUFSIZE_DUMPREQ 7
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#define POD_STARTUP_DELAY 1000
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/*
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Stages of POD startup procedure
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*/
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enum {
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POD_STARTUP_INIT = 1,
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POD_STARTUP_VERSIONREQ,
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POD_STARTUP_WORKQUEUE,
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POD_STARTUP_SETUP,
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POD_STARTUP_LAST = POD_STARTUP_SETUP - 1
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};
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enum {
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LINE6_BASSPODXT,
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LINE6_BASSPODXTLIVE,
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LINE6_BASSPODXTPRO,
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LINE6_POCKETPOD,
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LINE6_PODXT,
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LINE6_PODXTLIVE_POD,
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LINE6_PODXTPRO,
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};
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struct usb_line6_pod {
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/* Generic Line 6 USB data */
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struct usb_line6 line6;
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/* Instrument monitor level */
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int monitor_level;
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/* Timer for device initialization */
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struct timer_list startup_timer;
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/* Work handler for device initialization */
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struct work_struct startup_work;
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/* Current progress in startup procedure */
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int startup_progress;
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/* Serial number of device */
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u32 serial_number;
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/* Firmware version (x 100) */
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int firmware_version;
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/* Device ID */
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int device_id;
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};
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#define POD_SYSEX_CODE 3
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/* *INDENT-OFF* */
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enum {
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POD_SYSEX_SAVE = 0x24,
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POD_SYSEX_SYSTEM = 0x56,
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POD_SYSEX_SYSTEMREQ = 0x57,
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/* POD_SYSEX_UPDATE = 0x6c, */ /* software update! */
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POD_SYSEX_STORE = 0x71,
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POD_SYSEX_FINISH = 0x72,
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POD_SYSEX_DUMPMEM = 0x73,
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POD_SYSEX_DUMP = 0x74,
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POD_SYSEX_DUMPREQ = 0x75
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/* dumps entire internal memory of PODxt Pro */
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/* POD_SYSEX_DUMPMEM2 = 0x76 */
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};
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enum {
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POD_MONITOR_LEVEL = 0x04,
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POD_SYSTEM_INVALID = 0x10000
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};
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/* *INDENT-ON* */
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enum {
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POD_DUMP_MEMORY = 2
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};
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enum {
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POD_BUSY_READ,
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POD_BUSY_WRITE,
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POD_CHANNEL_DIRTY,
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POD_SAVE_PRESSED,
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POD_BUSY_MIDISEND
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};
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static struct snd_ratden pod_ratden = {
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.num_min = 78125,
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.num_max = 78125,
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.num_step = 1,
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.den = 2
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};
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static struct line6_pcm_properties pod_pcm_properties = {
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.playback_hw = {
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.info = (SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_PAUSE |
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SNDRV_PCM_INFO_SYNC_START),
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.formats = SNDRV_PCM_FMTBIT_S24_3LE,
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.rates = SNDRV_PCM_RATE_KNOT,
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.rate_min = 39062,
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.rate_max = 39063,
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.channels_min = 2,
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.channels_max = 2,
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.buffer_bytes_max = 60000,
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.period_bytes_min = 64,
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.period_bytes_max = 8192,
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.periods_min = 1,
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.periods_max = 1024},
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.capture_hw = {
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.info = (SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_SYNC_START),
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.formats = SNDRV_PCM_FMTBIT_S24_3LE,
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.rates = SNDRV_PCM_RATE_KNOT,
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.rate_min = 39062,
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.rate_max = 39063,
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.channels_min = 2,
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.channels_max = 2,
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.buffer_bytes_max = 60000,
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.period_bytes_min = 64,
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.period_bytes_max = 8192,
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.periods_min = 1,
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.periods_max = 1024},
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.rates = {
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.nrats = 1,
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.rats = &pod_ratden},
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.bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
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};
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static const char pod_version_header[] = {
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0xf2, 0x7e, 0x7f, 0x06, 0x02
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};
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/* forward declarations: */
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static void pod_startup2(struct timer_list *t);
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static void pod_startup3(struct usb_line6_pod *pod);
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static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code,
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int size)
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{
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return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code,
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size);
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}
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/*
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Process a completely received message.
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*/
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static void line6_pod_process_message(struct usb_line6 *line6)
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{
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struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
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const unsigned char *buf = pod->line6.buffer_message;
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if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) {
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pod->firmware_version = buf[13] * 100 + buf[14] * 10 + buf[15];
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pod->device_id = ((int)buf[8] << 16) | ((int)buf[9] << 8) |
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(int) buf[10];
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pod_startup3(pod);
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return;
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}
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/* Only look for sysex messages from this device */
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if (buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) &&
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buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) {
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return;
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}
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if (memcmp(buf + 1, line6_midi_id, sizeof(line6_midi_id)) != 0)
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return;
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if (buf[5] == POD_SYSEX_SYSTEM && buf[6] == POD_MONITOR_LEVEL) {
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short value = ((int)buf[7] << 12) | ((int)buf[8] << 8) |
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((int)buf[9] << 4) | (int)buf[10];
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pod->monitor_level = value;
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}
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}
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/*
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Send system parameter (from integer).
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*/
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static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
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int code)
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{
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char *sysex;
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static const int size = 5;
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sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size);
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if (!sysex)
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return -ENOMEM;
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sysex[SYSEX_DATA_OFS] = code;
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sysex[SYSEX_DATA_OFS + 1] = (value >> 12) & 0x0f;
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sysex[SYSEX_DATA_OFS + 2] = (value >> 8) & 0x0f;
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sysex[SYSEX_DATA_OFS + 3] = (value >> 4) & 0x0f;
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sysex[SYSEX_DATA_OFS + 4] = (value) & 0x0f;
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line6_send_sysex_message(&pod->line6, sysex, size);
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kfree(sysex);
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return 0;
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}
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/*
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"read" request on "serial_number" special file.
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*/
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static ssize_t serial_number_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct snd_card *card = dev_to_snd_card(dev);
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struct usb_line6_pod *pod = card->private_data;
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return sprintf(buf, "%u\n", pod->serial_number);
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}
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/*
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"read" request on "firmware_version" special file.
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*/
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static ssize_t firmware_version_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct snd_card *card = dev_to_snd_card(dev);
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struct usb_line6_pod *pod = card->private_data;
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return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100,
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pod->firmware_version % 100);
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}
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/*
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"read" request on "device_id" special file.
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*/
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static ssize_t device_id_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct snd_card *card = dev_to_snd_card(dev);
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struct usb_line6_pod *pod = card->private_data;
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return sprintf(buf, "%d\n", pod->device_id);
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}
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/*
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POD startup procedure.
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This is a sequence of functions with special requirements (e.g., must
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not run immediately after initialization, must not run in interrupt
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context). After the last one has finished, the device is ready to use.
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*/
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static void pod_startup1(struct usb_line6_pod *pod)
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{
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CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_INIT);
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/* delay startup procedure: */
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line6_start_timer(&pod->startup_timer, POD_STARTUP_DELAY, pod_startup2);
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}
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static void pod_startup2(struct timer_list *t)
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{
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struct usb_line6_pod *pod = from_timer(pod, t, startup_timer);
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struct usb_line6 *line6 = &pod->line6;
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CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_VERSIONREQ);
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/* request firmware version: */
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line6_version_request_async(line6);
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}
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static void pod_startup3(struct usb_line6_pod *pod)
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{
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CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_WORKQUEUE);
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/* schedule work for global work queue: */
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schedule_work(&pod->startup_work);
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}
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static void pod_startup4(struct work_struct *work)
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{
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struct usb_line6_pod *pod =
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container_of(work, struct usb_line6_pod, startup_work);
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struct usb_line6 *line6 = &pod->line6;
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CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_SETUP);
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/* serial number: */
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line6_read_serial_number(&pod->line6, &pod->serial_number);
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/* ALSA audio interface: */
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if (snd_card_register(line6->card))
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dev_err(line6->ifcdev, "Failed to register POD card.\n");
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}
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/* POD special files: */
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static DEVICE_ATTR_RO(device_id);
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static DEVICE_ATTR_RO(firmware_version);
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static DEVICE_ATTR_RO(serial_number);
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static struct attribute *pod_dev_attrs[] = {
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&dev_attr_device_id.attr,
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&dev_attr_firmware_version.attr,
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&dev_attr_serial_number.attr,
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NULL
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};
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static const struct attribute_group pod_dev_attr_group = {
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.name = "pod",
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.attrs = pod_dev_attrs,
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};
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/* control info callback */
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static int snd_pod_control_monitor_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 1;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = 65535;
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return 0;
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}
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/* control get callback */
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static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
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struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6;
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ucontrol->value.integer.value[0] = pod->monitor_level;
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return 0;
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}
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/* control put callback */
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static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
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struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6;
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if (ucontrol->value.integer.value[0] == pod->monitor_level)
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return 0;
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pod->monitor_level = ucontrol->value.integer.value[0];
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pod_set_system_param_int(pod, ucontrol->value.integer.value[0],
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POD_MONITOR_LEVEL);
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return 1;
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}
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/* control definition */
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static const struct snd_kcontrol_new pod_control_monitor = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Monitor Playback Volume",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = snd_pod_control_monitor_info,
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.get = snd_pod_control_monitor_get,
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.put = snd_pod_control_monitor_put
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};
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/*
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POD device disconnected.
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*/
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static void line6_pod_disconnect(struct usb_line6 *line6)
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{
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struct usb_line6_pod *pod = (struct usb_line6_pod *)line6;
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del_timer_sync(&pod->startup_timer);
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cancel_work_sync(&pod->startup_work);
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}
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/*
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Try to init POD device.
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*/
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static int pod_init(struct usb_line6 *line6,
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const struct usb_device_id *id)
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{
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int err;
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struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
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line6->process_message = line6_pod_process_message;
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line6->disconnect = line6_pod_disconnect;
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timer_setup(&pod->startup_timer, NULL, 0);
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INIT_WORK(&pod->startup_work, pod_startup4);
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/* create sysfs entries: */
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err = snd_card_add_dev_attr(line6->card, &pod_dev_attr_group);
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if (err < 0)
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return err;
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/* initialize MIDI subsystem: */
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err = line6_init_midi(line6);
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if (err < 0)
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return err;
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/* initialize PCM subsystem: */
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err = line6_init_pcm(line6, &pod_pcm_properties);
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if (err < 0)
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return err;
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/* register monitor control: */
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err = snd_ctl_add(line6->card,
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snd_ctl_new1(&pod_control_monitor, line6->line6pcm));
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if (err < 0)
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return err;
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/*
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When the sound card is registered at this point, the PODxt Live
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displays "Invalid Code Error 07", so we do it later in the event
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handler.
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*/
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if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
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pod->monitor_level = POD_SYSTEM_INVALID;
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/* initiate startup procedure: */
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pod_startup1(pod);
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}
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return 0;
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}
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#define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
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#define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
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/* table of devices that work with this driver */
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static const struct usb_device_id pod_id_table[] = {
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{ LINE6_DEVICE(0x4250), .driver_info = LINE6_BASSPODXT },
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{ LINE6_DEVICE(0x4642), .driver_info = LINE6_BASSPODXTLIVE },
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{ LINE6_DEVICE(0x4252), .driver_info = LINE6_BASSPODXTPRO },
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{ LINE6_IF_NUM(0x5051, 1), .driver_info = LINE6_POCKETPOD },
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{ LINE6_DEVICE(0x5044), .driver_info = LINE6_PODXT },
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{ LINE6_IF_NUM(0x4650, 0), .driver_info = LINE6_PODXTLIVE_POD },
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{ LINE6_DEVICE(0x5050), .driver_info = LINE6_PODXTPRO },
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{}
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};
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MODULE_DEVICE_TABLE(usb, pod_id_table);
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static const struct line6_properties pod_properties_table[] = {
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[LINE6_BASSPODXT] = {
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.id = "BassPODxt",
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.name = "BassPODxt",
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.capabilities = LINE6_CAP_CONTROL
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| LINE6_CAP_CONTROL_MIDI
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| LINE6_CAP_PCM
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| LINE6_CAP_HWMON,
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.altsetting = 5,
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.ep_ctrl_r = 0x84,
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.ep_ctrl_w = 0x03,
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.ep_audio_r = 0x82,
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.ep_audio_w = 0x01,
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},
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[LINE6_BASSPODXTLIVE] = {
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.id = "BassPODxtLive",
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.name = "BassPODxt Live",
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.capabilities = LINE6_CAP_CONTROL
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| LINE6_CAP_CONTROL_MIDI
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| LINE6_CAP_PCM
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| LINE6_CAP_HWMON,
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.altsetting = 1,
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.ep_ctrl_r = 0x84,
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.ep_ctrl_w = 0x03,
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.ep_audio_r = 0x82,
|
|
.ep_audio_w = 0x01,
|
|
},
|
|
[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 = 0x84,
|
|
.ep_ctrl_w = 0x03,
|
|
.ep_audio_r = 0x82,
|
|
.ep_audio_w = 0x01,
|
|
},
|
|
[LINE6_POCKETPOD] = {
|
|
.id = "PocketPOD",
|
|
.name = "Pocket POD",
|
|
.capabilities = LINE6_CAP_CONTROL
|
|
| LINE6_CAP_CONTROL_MIDI,
|
|
.altsetting = 0,
|
|
.ep_ctrl_r = 0x82,
|
|
.ep_ctrl_w = 0x02,
|
|
/* 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 = 0x84,
|
|
.ep_ctrl_w = 0x03,
|
|
.ep_audio_r = 0x82,
|
|
.ep_audio_w = 0x01,
|
|
},
|
|
[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 = 0x84,
|
|
.ep_ctrl_w = 0x03,
|
|
.ep_audio_r = 0x82,
|
|
.ep_audio_w = 0x01,
|
|
},
|
|
[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 = 0x84,
|
|
.ep_ctrl_w = 0x03,
|
|
.ep_audio_r = 0x82,
|
|
.ep_audio_w = 0x01,
|
|
},
|
|
};
|
|
|
|
/*
|
|
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");
|