diff options
Diffstat (limited to 'drivers/staging/line6/pcm.c')
-rw-r--r-- | drivers/staging/line6/pcm.c | 576 |
1 files changed, 0 insertions, 576 deletions
diff --git a/drivers/staging/line6/pcm.c b/drivers/staging/line6/pcm.c deleted file mode 100644 index a3136b189ee5..000000000000 --- a/drivers/staging/line6/pcm.c +++ /dev/null @@ -1,576 +0,0 @@ -/* - * Line6 Linux USB driver - 0.9.1beta - * - * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) - * - * 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/slab.h> -#include <sound/core.h> -#include <sound/control.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> - -#include "audio.h" -#include "capture.h" -#include "driver.h" -#include "playback.h" -#include "pod.h" - -#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE - -static struct snd_line6_pcm *dev2pcm(struct device *dev) -{ - struct usb_interface *interface = to_usb_interface(dev); - struct usb_line6 *line6 = usb_get_intfdata(interface); - struct snd_line6_pcm *line6pcm = line6->line6pcm; - return line6pcm; -} - -/* - "read" request on "impulse_volume" special file. -*/ -static ssize_t impulse_volume_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n", dev2pcm(dev)->impulse_volume); -} - -/* - "write" request on "impulse_volume" special file. -*/ -static ssize_t impulse_volume_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct snd_line6_pcm *line6pcm = dev2pcm(dev); - int value; - int ret; - - ret = kstrtoint(buf, 10, &value); - if (ret < 0) - return ret; - - line6pcm->impulse_volume = value; - - if (value > 0) - line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_IMPULSE); - else - line6_pcm_release(line6pcm, LINE6_BITS_PCM_IMPULSE); - - return count; -} -static DEVICE_ATTR_RW(impulse_volume); - -/* - "read" request on "impulse_period" special file. -*/ -static ssize_t impulse_period_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n", dev2pcm(dev)->impulse_period); -} - -/* - "write" request on "impulse_period" special file. -*/ -static ssize_t impulse_period_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - int value; - int ret; - - ret = kstrtoint(buf, 10, &value); - if (ret < 0) - return ret; - - dev2pcm(dev)->impulse_period = value; - return count; -} -static DEVICE_ATTR_RW(impulse_period); - -#endif - -static bool test_flags(unsigned long flags0, unsigned long flags1, - unsigned long mask) -{ - return ((flags0 & mask) == 0) && ((flags1 & mask) != 0); -} - -int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int channels) -{ - unsigned long flags_old, flags_new, flags_final; - int err; - - do { - flags_old = ACCESS_ONCE(line6pcm->flags); - flags_new = flags_old | channels; - } while (cmpxchg(&line6pcm->flags, flags_old, flags_new) != flags_old); - - flags_final = flags_old; - - line6pcm->prev_fbuf = NULL; - - if (test_flags(flags_old, flags_new, LINE6_BITS_CAPTURE_BUFFER)) { - /* Invoked multiple times in a row so allocate once only */ - if (!line6pcm->buffer_in) { - line6pcm->buffer_in = - kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS * - line6pcm->max_packet_size, GFP_KERNEL); - if (!line6pcm->buffer_in) { - err = -ENOMEM; - goto pcm_acquire_error; - } - - flags_final |= channels & LINE6_BITS_CAPTURE_BUFFER; - } - } - - if (test_flags(flags_old, flags_new, LINE6_BITS_CAPTURE_STREAM)) { - /* - Waiting for completion of active URBs in the stop handler is - a bug, we therefore report an error if capturing is restarted - too soon. - */ - if (line6pcm->active_urb_in | line6pcm->unlink_urb_in) { - dev_err(line6pcm->line6->ifcdev, "Device not yet ready\n"); - return -EBUSY; - } - - line6pcm->count_in = 0; - line6pcm->prev_fsize = 0; - err = line6_submit_audio_in_all_urbs(line6pcm); - - if (err < 0) - goto pcm_acquire_error; - - flags_final |= channels & LINE6_BITS_CAPTURE_STREAM; - } - - if (test_flags(flags_old, flags_new, LINE6_BITS_PLAYBACK_BUFFER)) { - /* Invoked multiple times in a row so allocate once only */ - if (!line6pcm->buffer_out) { - line6pcm->buffer_out = - kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS * - line6pcm->max_packet_size, GFP_KERNEL); - if (!line6pcm->buffer_out) { - err = -ENOMEM; - goto pcm_acquire_error; - } - - flags_final |= channels & LINE6_BITS_PLAYBACK_BUFFER; - } - } - - if (test_flags(flags_old, flags_new, LINE6_BITS_PLAYBACK_STREAM)) { - /* - See comment above regarding PCM restart. - */ - if (line6pcm->active_urb_out | line6pcm->unlink_urb_out) { - dev_err(line6pcm->line6->ifcdev, "Device not yet ready\n"); - return -EBUSY; - } - - line6pcm->count_out = 0; - err = line6_submit_audio_out_all_urbs(line6pcm); - - if (err < 0) - goto pcm_acquire_error; - - flags_final |= channels & LINE6_BITS_PLAYBACK_STREAM; - } - - return 0; - -pcm_acquire_error: - /* - If not all requested resources/streams could be obtained, release - those which were successfully obtained (if any). - */ - line6_pcm_release(line6pcm, flags_final & channels); - return err; -} - -int line6_pcm_release(struct snd_line6_pcm *line6pcm, int channels) -{ - unsigned long flags_old, flags_new; - - do { - flags_old = ACCESS_ONCE(line6pcm->flags); - flags_new = flags_old & ~channels; - } while (cmpxchg(&line6pcm->flags, flags_old, flags_new) != flags_old); - - if (test_flags(flags_new, flags_old, LINE6_BITS_CAPTURE_STREAM)) - line6_unlink_audio_in_urbs(line6pcm); - - if (test_flags(flags_new, flags_old, LINE6_BITS_CAPTURE_BUFFER)) { - line6_wait_clear_audio_in_urbs(line6pcm); - line6_free_capture_buffer(line6pcm); - } - - if (test_flags(flags_new, flags_old, LINE6_BITS_PLAYBACK_STREAM)) - line6_unlink_audio_out_urbs(line6pcm); - - if (test_flags(flags_new, flags_old, LINE6_BITS_PLAYBACK_BUFFER)) { - line6_wait_clear_audio_out_urbs(line6pcm); - line6_free_playback_buffer(line6pcm); - } - - return 0; -} - -/* trigger callback */ -int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); - struct snd_pcm_substream *s; - int err; - unsigned long flags; - - spin_lock_irqsave(&line6pcm->lock_trigger, flags); - clear_bit(LINE6_INDEX_PREPARED, &line6pcm->flags); - - snd_pcm_group_for_each_entry(s, substream) { - switch (s->stream) { - case SNDRV_PCM_STREAM_PLAYBACK: - err = snd_line6_playback_trigger(line6pcm, cmd); - - if (err < 0) { - spin_unlock_irqrestore(&line6pcm->lock_trigger, - flags); - return err; - } - - break; - - case SNDRV_PCM_STREAM_CAPTURE: - err = snd_line6_capture_trigger(line6pcm, cmd); - - if (err < 0) { - spin_unlock_irqrestore(&line6pcm->lock_trigger, - flags); - return err; - } - - break; - - default: - dev_err(line6pcm->line6->ifcdev, - "Unknown stream direction %d\n", s->stream); - } - } - - spin_unlock_irqrestore(&line6pcm->lock_trigger, flags); - return 0; -} - -/* control info callback */ -static int snd_line6_control_playback_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 2; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = 256; - return 0; -} - -/* control get callback */ -static int snd_line6_control_playback_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - int i; - struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); - - for (i = 2; i--;) - ucontrol->value.integer.value[i] = line6pcm->volume_playback[i]; - - return 0; -} - -/* control put callback */ -static int snd_line6_control_playback_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - int i, changed = 0; - struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); - - for (i = 2; i--;) - if (line6pcm->volume_playback[i] != - ucontrol->value.integer.value[i]) { - line6pcm->volume_playback[i] = - ucontrol->value.integer.value[i]; - changed = 1; - } - - return changed; -} - -/* control definition */ -static struct snd_kcontrol_new line6_control_playback = { - .iface = SNDRV_CTL_ELEM_IFACE_MIXER, - .name = "PCM Playback Volume", - .index = 0, - .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, - .info = snd_line6_control_playback_info, - .get = snd_line6_control_playback_get, - .put = snd_line6_control_playback_put -}; - -/* - Cleanup the PCM device. -*/ -static void line6_cleanup_pcm(struct snd_pcm *pcm) -{ - int i; - struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm); - -#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE - device_remove_file(line6pcm->line6->ifcdev, &dev_attr_impulse_volume); - device_remove_file(line6pcm->line6->ifcdev, &dev_attr_impulse_period); -#endif - - for (i = LINE6_ISO_BUFFERS; i--;) { - if (line6pcm->urb_audio_out[i]) { - usb_kill_urb(line6pcm->urb_audio_out[i]); - usb_free_urb(line6pcm->urb_audio_out[i]); - } - if (line6pcm->urb_audio_in[i]) { - usb_kill_urb(line6pcm->urb_audio_in[i]); - usb_free_urb(line6pcm->urb_audio_in[i]); - } - } -} - -/* create a PCM device */ -static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm) -{ - struct snd_pcm *pcm; - int err; - - err = snd_pcm_new(line6pcm->line6->card, - (char *)line6pcm->line6->properties->name, - 0, 1, 1, &pcm); - if (err < 0) - return err; - - pcm->private_data = line6pcm; - pcm->private_free = line6_cleanup_pcm; - line6pcm->pcm = pcm; - strcpy(pcm->name, line6pcm->line6->properties->name); - - /* set operators */ - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, - &snd_line6_playback_ops); - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops); - - /* pre-allocation of buffers */ - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data - (GFP_KERNEL), 64 * 1024, - 128 * 1024); - - return 0; -} - -/* PCM device destructor */ -static int snd_line6_pcm_free(struct snd_device *device) -{ - return 0; -} - -/* - Stop substream if still running. -*/ -static void pcm_disconnect_substream(struct snd_pcm_substream *substream) -{ - if (substream->runtime && snd_pcm_running(substream)) { - snd_pcm_stream_lock_irq(substream); - snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED); - snd_pcm_stream_unlock_irq(substream); - } -} - -/* - Stop PCM stream. -*/ -void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm) -{ - pcm_disconnect_substream(get_substream - (line6pcm, SNDRV_PCM_STREAM_CAPTURE)); - pcm_disconnect_substream(get_substream - (line6pcm, SNDRV_PCM_STREAM_PLAYBACK)); - line6_unlink_wait_clear_audio_out_urbs(line6pcm); - line6_unlink_wait_clear_audio_in_urbs(line6pcm); -} - -/* - Create and register the PCM device and mixer entries. - Create URBs for playback and capture. -*/ -int line6_init_pcm(struct usb_line6 *line6, - struct line6_pcm_properties *properties) -{ - static struct snd_device_ops pcm_ops = { - .dev_free = snd_line6_pcm_free, - }; - - int err; - int ep_read = 0, ep_write = 0; - struct snd_line6_pcm *line6pcm; - - if (!(line6->properties->capabilities & LINE6_BIT_PCM)) - return 0; /* skip PCM initialization and report success */ - - /* initialize PCM subsystem based on product id: */ - switch (line6->product) { - case LINE6_DEVID_BASSPODXT: - case LINE6_DEVID_BASSPODXTLIVE: - case LINE6_DEVID_BASSPODXTPRO: - case LINE6_DEVID_PODXT: - case LINE6_DEVID_PODXTLIVE: - case LINE6_DEVID_PODXTPRO: - case LINE6_DEVID_PODHD300: - case LINE6_DEVID_PODHD400: - ep_read = 0x82; - ep_write = 0x01; - break; - - case LINE6_DEVID_PODHD500: - case LINE6_DEVID_PODX3: - case LINE6_DEVID_PODX3LIVE: - ep_read = 0x86; - ep_write = 0x02; - break; - - case LINE6_DEVID_POCKETPOD: - ep_read = 0x82; - ep_write = 0x02; - break; - - case LINE6_DEVID_GUITARPORT: - case LINE6_DEVID_PODSTUDIO_GX: - case LINE6_DEVID_PODSTUDIO_UX1: - case LINE6_DEVID_PODSTUDIO_UX2: - case LINE6_DEVID_TONEPORT_GX: - case LINE6_DEVID_TONEPORT_UX1: - case LINE6_DEVID_TONEPORT_UX2: - ep_read = 0x82; - ep_write = 0x01; - break; - - /* this is for interface_number == 1: - case LINE6_DEVID_TONEPORT_UX2: - case LINE6_DEVID_PODSTUDIO_UX2: - ep_read = 0x87; - ep_write = 0x00; - break; */ - - default: - MISSING_CASE; - } - - line6pcm = kzalloc(sizeof(*line6pcm), GFP_KERNEL); - - if (line6pcm == NULL) - return -ENOMEM; - - line6pcm->volume_playback[0] = line6pcm->volume_playback[1] = 255; - line6pcm->volume_monitor = 255; - line6pcm->line6 = line6; - line6pcm->ep_audio_read = ep_read; - line6pcm->ep_audio_write = ep_write; - - /* Read and write buffers are sized identically, so choose minimum */ - line6pcm->max_packet_size = min( - usb_maxpacket(line6->usbdev, - usb_rcvisocpipe(line6->usbdev, ep_read), 0), - usb_maxpacket(line6->usbdev, - usb_sndisocpipe(line6->usbdev, ep_write), 1)); - - line6pcm->properties = properties; - line6->line6pcm = line6pcm; - - /* PCM device: */ - err = snd_device_new(line6->card, SNDRV_DEV_PCM, line6, &pcm_ops); - if (err < 0) - return err; - - err = snd_line6_new_pcm(line6pcm); - if (err < 0) - return err; - - spin_lock_init(&line6pcm->lock_audio_out); - spin_lock_init(&line6pcm->lock_audio_in); - spin_lock_init(&line6pcm->lock_trigger); - - 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; -} |