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![Johannes Thumshirn](/assets/img/avatar_default.png)
Removed a line of only whitespace Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
564 lines
14 KiB
C
564 lines
14 KiB
C
/*
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* Line6 Linux USB driver - 0.9.1beta
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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 <sound/core.h>
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#include <sound/control.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "audio.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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#include "pod.h"
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#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
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static struct snd_line6_pcm *dev2pcm(struct device *dev)
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{
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struct usb_interface *interface = to_usb_interface(dev);
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struct usb_line6 *line6 = usb_get_intfdata(interface);
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struct snd_line6_pcm *line6pcm = line6->line6pcm;
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return line6pcm;
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}
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/*
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"read" request on "impulse_volume" special file.
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*/
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static ssize_t pcm_get_impulse_volume(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%d\n", dev2pcm(dev)->impulse_volume);
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}
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/*
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"write" request on "impulse_volume" special file.
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*/
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static ssize_t pcm_set_impulse_volume(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_line6_pcm *line6pcm = dev2pcm(dev);
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int value = simple_strtoul(buf, NULL, 10);
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line6pcm->impulse_volume = value;
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if (value > 0)
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line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_IMPULSE);
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else
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line6_pcm_release(line6pcm, LINE6_BITS_PCM_IMPULSE);
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return count;
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}
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/*
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"read" request on "impulse_period" special file.
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*/
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static ssize_t pcm_get_impulse_period(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%d\n", dev2pcm(dev)->impulse_period);
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}
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/*
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"write" request on "impulse_period" special file.
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*/
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static ssize_t pcm_set_impulse_period(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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dev2pcm(dev)->impulse_period = simple_strtoul(buf, NULL, 10);
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return count;
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}
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static DEVICE_ATTR(impulse_volume, S_IWUSR | S_IRUGO, pcm_get_impulse_volume,
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pcm_set_impulse_volume);
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static DEVICE_ATTR(impulse_period, S_IWUSR | S_IRUGO, pcm_get_impulse_period,
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pcm_set_impulse_period);
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#endif
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static bool test_flags(unsigned long flags0, unsigned long flags1,
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unsigned long mask)
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{
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return ((flags0 & mask) == 0) && ((flags1 & mask) != 0);
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}
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int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int channels)
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{
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unsigned long flags_old =
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__sync_fetch_and_or(&line6pcm->flags, channels);
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unsigned long flags_new = flags_old | channels;
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unsigned long flags_final = flags_old;
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int err = 0;
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line6pcm->prev_fbuf = NULL;
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if (test_flags(flags_old, flags_new, LINE6_BITS_CAPTURE_BUFFER)) {
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/* We may be invoked multiple times in a row so allocate once only */
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if (!line6pcm->buffer_in) {
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line6pcm->buffer_in =
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kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
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line6pcm->max_packet_size, GFP_KERNEL);
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if (!line6pcm->buffer_in) {
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dev_err(line6pcm->line6->ifcdev,
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"cannot malloc capture buffer\n");
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err = -ENOMEM;
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goto pcm_acquire_error;
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}
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flags_final |= channels & LINE6_BITS_CAPTURE_BUFFER;
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}
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}
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if (test_flags(flags_old, flags_new, LINE6_BITS_CAPTURE_STREAM)) {
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/*
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Waiting for completion of active URBs in the stop handler is
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a bug, we therefore report an error if capturing is restarted
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too soon.
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*/
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if (line6pcm->active_urb_in | line6pcm->unlink_urb_in) {
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dev_err(line6pcm->line6->ifcdev, "Device not yet ready\n");
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return -EBUSY;
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}
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line6pcm->count_in = 0;
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line6pcm->prev_fsize = 0;
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err = line6_submit_audio_in_all_urbs(line6pcm);
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if (err < 0)
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goto pcm_acquire_error;
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flags_final |= channels & LINE6_BITS_CAPTURE_STREAM;
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}
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if (test_flags(flags_old, flags_new, LINE6_BITS_PLAYBACK_BUFFER)) {
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/* We may be invoked multiple times in a row so allocate once only */
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if (!line6pcm->buffer_out) {
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line6pcm->buffer_out =
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kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS *
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line6pcm->max_packet_size, GFP_KERNEL);
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if (!line6pcm->buffer_out) {
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dev_err(line6pcm->line6->ifcdev,
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"cannot malloc playback buffer\n");
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err = -ENOMEM;
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goto pcm_acquire_error;
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}
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flags_final |= channels & LINE6_BITS_PLAYBACK_BUFFER;
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}
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}
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if (test_flags(flags_old, flags_new, LINE6_BITS_PLAYBACK_STREAM)) {
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/*
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See comment above regarding PCM restart.
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*/
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if (line6pcm->active_urb_out | line6pcm->unlink_urb_out) {
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dev_err(line6pcm->line6->ifcdev, "Device not yet ready\n");
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return -EBUSY;
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}
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line6pcm->count_out = 0;
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err = line6_submit_audio_out_all_urbs(line6pcm);
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if (err < 0)
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goto pcm_acquire_error;
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flags_final |= channels & LINE6_BITS_PLAYBACK_STREAM;
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}
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return 0;
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pcm_acquire_error:
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/*
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If not all requested resources/streams could be obtained, release
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those which were successfully obtained (if any).
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*/
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line6_pcm_release(line6pcm, flags_final & channels);
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return err;
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}
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int line6_pcm_release(struct snd_line6_pcm *line6pcm, int channels)
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{
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unsigned long flags_old =
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__sync_fetch_and_and(&line6pcm->flags, ~channels);
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unsigned long flags_new = flags_old & ~channels;
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if (test_flags(flags_new, flags_old, LINE6_BITS_CAPTURE_STREAM))
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line6_unlink_audio_in_urbs(line6pcm);
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if (test_flags(flags_new, flags_old, LINE6_BITS_CAPTURE_BUFFER)) {
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line6_wait_clear_audio_in_urbs(line6pcm);
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line6_free_capture_buffer(line6pcm);
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}
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if (test_flags(flags_new, flags_old, LINE6_BITS_PLAYBACK_STREAM))
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line6_unlink_audio_out_urbs(line6pcm);
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if (test_flags(flags_new, flags_old, LINE6_BITS_PLAYBACK_BUFFER)) {
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line6_wait_clear_audio_out_urbs(line6pcm);
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line6_free_playback_buffer(line6pcm);
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}
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return 0;
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}
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/* trigger callback */
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int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd)
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{
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struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
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struct snd_pcm_substream *s;
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int err;
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unsigned long flags;
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spin_lock_irqsave(&line6pcm->lock_trigger, flags);
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clear_bit(LINE6_INDEX_PREPARED, &line6pcm->flags);
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snd_pcm_group_for_each_entry(s, substream) {
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switch (s->stream) {
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case SNDRV_PCM_STREAM_PLAYBACK:
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err = snd_line6_playback_trigger(line6pcm, cmd);
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if (err < 0) {
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spin_unlock_irqrestore(&line6pcm->lock_trigger,
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flags);
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return err;
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}
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break;
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case SNDRV_PCM_STREAM_CAPTURE:
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err = snd_line6_capture_trigger(line6pcm, cmd);
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if (err < 0) {
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spin_unlock_irqrestore(&line6pcm->lock_trigger,
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flags);
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return err;
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}
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break;
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default:
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dev_err(line6pcm->line6->ifcdev,
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"Unknown stream direction %d\n", s->stream);
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}
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}
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spin_unlock_irqrestore(&line6pcm->lock_trigger, flags);
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return 0;
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}
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/* control info callback */
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static int snd_line6_control_playback_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 = 2;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = 256;
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return 0;
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}
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/* control get callback */
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static int snd_line6_control_playback_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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int i;
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struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
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for (i = 2; i--;)
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ucontrol->value.integer.value[i] = line6pcm->volume_playback[i];
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return 0;
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}
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/* control put callback */
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static int snd_line6_control_playback_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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int i, changed = 0;
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struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
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for (i = 2; i--;)
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if (line6pcm->volume_playback[i] !=
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ucontrol->value.integer.value[i]) {
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line6pcm->volume_playback[i] =
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ucontrol->value.integer.value[i];
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changed = 1;
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}
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return changed;
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}
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/* control definition */
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static struct snd_kcontrol_new line6_control_playback = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "PCM Playback Volume",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = snd_line6_control_playback_info,
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.get = snd_line6_control_playback_get,
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.put = snd_line6_control_playback_put
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};
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/*
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Cleanup the PCM device.
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*/
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static void line6_cleanup_pcm(struct snd_pcm *pcm)
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{
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int i;
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struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm);
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#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
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device_remove_file(line6pcm->line6->ifcdev, &dev_attr_impulse_volume);
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device_remove_file(line6pcm->line6->ifcdev, &dev_attr_impulse_period);
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#endif
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for (i = LINE6_ISO_BUFFERS; i--;) {
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if (line6pcm->urb_audio_out[i]) {
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usb_kill_urb(line6pcm->urb_audio_out[i]);
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usb_free_urb(line6pcm->urb_audio_out[i]);
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}
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if (line6pcm->urb_audio_in[i]) {
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usb_kill_urb(line6pcm->urb_audio_in[i]);
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usb_free_urb(line6pcm->urb_audio_in[i]);
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}
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}
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}
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/* create a PCM device */
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static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm)
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{
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struct snd_pcm *pcm;
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int err;
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err = snd_pcm_new(line6pcm->line6->card,
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(char *)line6pcm->line6->properties->name,
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0, 1, 1, &pcm);
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if (err < 0)
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return err;
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pcm->private_data = line6pcm;
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pcm->private_free = line6_cleanup_pcm;
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line6pcm->pcm = pcm;
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strcpy(pcm->name, line6pcm->line6->properties->name);
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/* set operators */
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
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&snd_line6_playback_ops);
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snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops);
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/* pre-allocation of buffers */
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snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
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snd_dma_continuous_data
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(GFP_KERNEL), 64 * 1024,
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128 * 1024);
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return 0;
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}
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/* PCM device destructor */
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static int snd_line6_pcm_free(struct snd_device *device)
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{
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return 0;
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}
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/*
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Stop substream if still running.
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*/
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static void pcm_disconnect_substream(struct snd_pcm_substream *substream)
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{
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if (substream->runtime && snd_pcm_running(substream))
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snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED);
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}
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/*
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Stop PCM stream.
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*/
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void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm)
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{
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pcm_disconnect_substream(get_substream
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(line6pcm, SNDRV_PCM_STREAM_CAPTURE));
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pcm_disconnect_substream(get_substream
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(line6pcm, SNDRV_PCM_STREAM_PLAYBACK));
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line6_unlink_wait_clear_audio_out_urbs(line6pcm);
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line6_unlink_wait_clear_audio_in_urbs(line6pcm);
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}
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/*
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Create and register the PCM device and mixer entries.
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Create URBs for playback and capture.
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*/
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int line6_init_pcm(struct usb_line6 *line6,
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struct line6_pcm_properties *properties)
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{
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static struct snd_device_ops pcm_ops = {
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.dev_free = snd_line6_pcm_free,
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};
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int err;
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int ep_read = 0, ep_write = 0;
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struct snd_line6_pcm *line6pcm;
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if (!(line6->properties->capabilities & LINE6_BIT_PCM))
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return 0; /* skip PCM initialization and report success */
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/* initialize PCM subsystem based on product id: */
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switch (line6->product) {
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case LINE6_DEVID_BASSPODXT:
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case LINE6_DEVID_BASSPODXTLIVE:
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case LINE6_DEVID_BASSPODXTPRO:
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case LINE6_DEVID_PODXT:
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case LINE6_DEVID_PODXTLIVE:
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case LINE6_DEVID_PODXTPRO:
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case LINE6_DEVID_PODHD300:
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ep_read = 0x82;
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ep_write = 0x01;
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break;
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case LINE6_DEVID_PODHD500:
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case LINE6_DEVID_PODX3:
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case LINE6_DEVID_PODX3LIVE:
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ep_read = 0x86;
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ep_write = 0x02;
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break;
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case LINE6_DEVID_POCKETPOD:
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ep_read = 0x82;
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ep_write = 0x02;
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break;
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case LINE6_DEVID_GUITARPORT:
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case LINE6_DEVID_PODSTUDIO_GX:
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case LINE6_DEVID_PODSTUDIO_UX1:
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case LINE6_DEVID_PODSTUDIO_UX2:
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case LINE6_DEVID_TONEPORT_GX:
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case LINE6_DEVID_TONEPORT_UX1:
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case LINE6_DEVID_TONEPORT_UX2:
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ep_read = 0x82;
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ep_write = 0x01;
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break;
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/* this is for interface_number == 1:
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case LINE6_DEVID_TONEPORT_UX2:
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case LINE6_DEVID_PODSTUDIO_UX2:
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ep_read = 0x87;
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ep_write = 0x00;
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break;
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*/
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default:
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MISSING_CASE;
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}
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line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL);
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if (line6pcm == NULL)
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return -ENOMEM;
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line6pcm->volume_playback[0] = line6pcm->volume_playback[1] = 255;
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line6pcm->volume_monitor = 255;
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line6pcm->line6 = line6;
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line6pcm->ep_audio_read = ep_read;
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line6pcm->ep_audio_write = ep_write;
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/* Read and write buffers are sized identically, so choose minimum */
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line6pcm->max_packet_size = min(
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usb_maxpacket(line6->usbdev,
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usb_rcvisocpipe(line6->usbdev, ep_read), 0),
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usb_maxpacket(line6->usbdev,
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usb_sndisocpipe(line6->usbdev, ep_write), 1));
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line6pcm->properties = properties;
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line6->line6pcm = line6pcm;
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/* PCM device: */
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err = snd_device_new(line6->card, SNDRV_DEV_PCM, line6, &pcm_ops);
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if (err < 0)
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return err;
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snd_card_set_dev(line6->card, line6->ifcdev);
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err = snd_line6_new_pcm(line6pcm);
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if (err < 0)
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return err;
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spin_lock_init(&line6pcm->lock_audio_out);
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spin_lock_init(&line6pcm->lock_audio_in);
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spin_lock_init(&line6pcm->lock_trigger);
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err = line6_create_audio_out_urbs(line6pcm);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = line6_create_audio_in_urbs(line6pcm);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* mixer: */
|
|
err =
|
|
snd_ctl_add(line6->card,
|
|
snd_ctl_new1(&line6_control_playback, line6pcm));
|
|
if (err < 0)
|
|
return err;
|
|
|
|
#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
|
|
/* impulse response test: */
|
|
err = device_create_file(line6->ifcdev, &dev_attr_impulse_volume);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = device_create_file(line6->ifcdev, &dev_attr_impulse_period);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
line6pcm->impulse_period = LINE6_IMPULSE_DEFAULT_PERIOD;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* prepare pcm callback */
|
|
int snd_line6_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
|
|
|
|
switch (substream->stream) {
|
|
case SNDRV_PCM_STREAM_PLAYBACK:
|
|
if ((line6pcm->flags & LINE6_BITS_PLAYBACK_STREAM) == 0)
|
|
line6_unlink_wait_clear_audio_out_urbs(line6pcm);
|
|
|
|
break;
|
|
|
|
case SNDRV_PCM_STREAM_CAPTURE:
|
|
if ((line6pcm->flags & LINE6_BITS_CAPTURE_STREAM) == 0)
|
|
line6_unlink_wait_clear_audio_in_urbs(line6pcm);
|
|
|
|
break;
|
|
|
|
default:
|
|
MISSING_CASE;
|
|
}
|
|
|
|
if (!test_and_set_bit(LINE6_INDEX_PREPARED, &line6pcm->flags)) {
|
|
line6pcm->count_out = 0;
|
|
line6pcm->pos_out = 0;
|
|
line6pcm->pos_out_done = 0;
|
|
line6pcm->bytes_out = 0;
|
|
line6pcm->count_in = 0;
|
|
line6pcm->pos_in_done = 0;
|
|
line6pcm->bytes_in = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|