/* * Line6 Linux USB driver - 0.8.0 * * Copyright (C) 2004-2009 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 "driver.h" #include #include #include #include #include "audio.h" #include "capture.h" #include "playback.h" #include "pod.h" /* 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(BIT_PREPARED, &line6pcm->flags); snd_pcm_group_for_each_entry(s, substream) { switch (s->stream) { case SNDRV_PCM_STREAM_PLAYBACK: err = snd_line6_playback_trigger(s, cmd); if (err < 0) { spin_unlock_irqrestore(&line6pcm->lock_trigger, flags); return err; } break; case SNDRV_PCM_STREAM_CAPTURE: err = snd_line6_capture_trigger(s, cmd); if (err < 0) { spin_unlock_irqrestore(&line6pcm->lock_trigger, flags); return err; } break; default: dev_err(s2m(substream), "Unknown stream direction %d\n", s->stream); } } spin_unlock_irqrestore(&line6pcm->lock_trigger, flags); return 0; } /* control info callback */ static int snd_line6_control_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_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[i]; return 0; } /* control put callback */ static int snd_line6_control_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[i] != ucontrol->value.integer.value[i]) { line6pcm->volume[i] = ucontrol->value.integer.value[i]; changed = 1; } return changed; } /* control definition */ static struct snd_kcontrol_new line6_control = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "PCM Playback Volume", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .info = snd_line6_control_info, .get = snd_line6_control_get, .put = snd_line6_control_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); 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; } /* 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: ep_read = 0x82; ep_write = 0x01; break; 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_TONEPORT_GX: ep_read = 0x82; ep_write = 0x01; break; case LINE6_DEVID_TONEPORT_UX1: ep_read = 0x00; ep_write = 0x00; break; case LINE6_DEVID_TONEPORT_UX2: ep_read = 0x87; ep_write = 0x00; break; default: MISSING_CASE; } line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL); if (line6pcm == NULL) return -ENOMEM; line6pcm->volume[0] = line6pcm->volume[1] = 128; line6pcm->line6 = line6; line6pcm->ep_audio_read = ep_read; line6pcm->ep_audio_write = ep_write; line6pcm->max_packet_size = usb_maxpacket(line6->usbdev, usb_rcvintpipe(line6->usbdev, ep_read), 0); 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; snd_card_set_dev(line6->card, line6->ifcdev); 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 = create_audio_out_urbs(line6pcm); if (err < 0) return err; err = create_audio_in_urbs(line6pcm); if (err < 0) return err; /* mixer: */ err = snd_ctl_add(line6->card, snd_ctl_new1(&line6_control, line6pcm)); if (err < 0) return err; return 0; } /* prepare pcm callback */ int snd_line6_prepare(struct snd_pcm_substream *substream) { struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); if (!test_and_set_bit(BIT_PREPARED, &line6pcm->flags)) { unlink_wait_clear_audio_out_urbs(line6pcm); line6pcm->pos_out = 0; line6pcm->pos_out_done = 0; unlink_wait_clear_audio_in_urbs(line6pcm); line6pcm->bytes_out = 0; line6pcm->pos_in_done = 0; line6pcm->bytes_in = 0; } return 0; }