2 * Line6 Linux USB driver - 0.8.0
4 * Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
14 #include <sound/core.h>
15 #include <sound/control.h>
16 #include <sound/pcm.h>
17 #include <sound/pcm_params.h>
25 /* trigger callback */
26 int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd)
28 struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
29 struct snd_pcm_substream *s;
33 spin_lock_irqsave(&line6pcm->lock_trigger, flags);
34 clear_bit(BIT_PREPARED, &line6pcm->flags);
36 snd_pcm_group_for_each_entry(s, substream) {
38 case SNDRV_PCM_STREAM_PLAYBACK:
39 err = snd_line6_playback_trigger(s, cmd);
42 spin_unlock_irqrestore(&line6pcm->lock_trigger,
49 case SNDRV_PCM_STREAM_CAPTURE:
50 err = snd_line6_capture_trigger(s, cmd);
53 spin_unlock_irqrestore(&line6pcm->lock_trigger,
61 dev_err(s2m(substream), "Unknown stream direction %d\n",
66 spin_unlock_irqrestore(&line6pcm->lock_trigger, flags);
70 /* control info callback */
71 static int snd_line6_control_info(struct snd_kcontrol *kcontrol,
72 struct snd_ctl_elem_info *uinfo)
74 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
76 uinfo->value.integer.min = 0;
77 uinfo->value.integer.max = 256;
81 /* control get callback */
82 static int snd_line6_control_get(struct snd_kcontrol *kcontrol,
83 struct snd_ctl_elem_value *ucontrol)
86 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
89 ucontrol->value.integer.value[i] = line6pcm->volume[i];
94 /* control put callback */
95 static int snd_line6_control_put(struct snd_kcontrol *kcontrol,
96 struct snd_ctl_elem_value *ucontrol)
99 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
102 if (line6pcm->volume[i] != ucontrol->value.integer.value[i]) {
103 line6pcm->volume[i] = ucontrol->value.integer.value[i];
110 /* control definition */
111 static struct snd_kcontrol_new line6_control = {
112 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
113 .name = "PCM Playback Volume",
115 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
116 .info = snd_line6_control_info,
117 .get = snd_line6_control_get,
118 .put = snd_line6_control_put
122 Cleanup the PCM device.
124 static void line6_cleanup_pcm(struct snd_pcm *pcm)
127 struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm);
129 for (i = LINE6_ISO_BUFFERS; i--;) {
130 if (line6pcm->urb_audio_out[i]) {
131 usb_kill_urb(line6pcm->urb_audio_out[i]);
132 usb_free_urb(line6pcm->urb_audio_out[i]);
134 if (line6pcm->urb_audio_in[i]) {
135 usb_kill_urb(line6pcm->urb_audio_in[i]);
136 usb_free_urb(line6pcm->urb_audio_in[i]);
141 /* create a PCM device */
142 static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm)
147 err = snd_pcm_new(line6pcm->line6->card,
148 (char *)line6pcm->line6->properties->name,
153 pcm->private_data = line6pcm;
154 pcm->private_free = line6_cleanup_pcm;
156 strcpy(pcm->name, line6pcm->line6->properties->name);
159 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
160 &snd_line6_playback_ops);
161 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops);
163 /* pre-allocation of buffers */
164 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
165 snd_dma_continuous_data(GFP_KERNEL),
166 64 * 1024, 128 * 1024);
171 /* PCM device destructor */
172 static int snd_line6_pcm_free(struct snd_device *device)
178 Create and register the PCM device and mixer entries.
179 Create URBs for playback and capture.
181 int line6_init_pcm(struct usb_line6 *line6,
182 struct line6_pcm_properties *properties)
184 static struct snd_device_ops pcm_ops = {
185 .dev_free = snd_line6_pcm_free,
189 int ep_read = 0, ep_write = 0;
190 struct snd_line6_pcm *line6pcm;
192 if (!(line6->properties->capabilities & LINE6_BIT_PCM))
193 return 0; /* skip PCM initialization and report success */
195 /* initialize PCM subsystem based on product id: */
196 switch (line6->product) {
197 case LINE6_DEVID_BASSPODXT:
198 case LINE6_DEVID_BASSPODXTLIVE:
199 case LINE6_DEVID_BASSPODXTPRO:
200 case LINE6_DEVID_PODXT:
201 case LINE6_DEVID_PODXTLIVE:
202 case LINE6_DEVID_PODXTPRO:
207 case LINE6_DEVID_PODX3:
208 case LINE6_DEVID_PODX3LIVE:
213 case LINE6_DEVID_POCKETPOD:
218 case LINE6_DEVID_GUITARPORT:
219 case LINE6_DEVID_TONEPORT_GX:
224 case LINE6_DEVID_TONEPORT_UX1:
229 case LINE6_DEVID_TONEPORT_UX2:
238 line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL);
240 if (line6pcm == NULL)
243 line6pcm->volume[0] = line6pcm->volume[1] = 128;
244 line6pcm->line6 = line6;
245 line6pcm->ep_audio_read = ep_read;
246 line6pcm->ep_audio_write = ep_write;
247 line6pcm->max_packet_size = usb_maxpacket(line6->usbdev,
248 usb_rcvintpipe(line6->usbdev,
251 line6pcm->properties = properties;
252 line6->line6pcm = line6pcm;
255 err = snd_device_new(line6->card, SNDRV_DEV_PCM, line6, &pcm_ops);
259 snd_card_set_dev(line6->card, line6->ifcdev);
261 err = snd_line6_new_pcm(line6pcm);
265 spin_lock_init(&line6pcm->lock_audio_out);
266 spin_lock_init(&line6pcm->lock_audio_in);
267 spin_lock_init(&line6pcm->lock_trigger);
269 err = create_audio_out_urbs(line6pcm);
273 err = create_audio_in_urbs(line6pcm);
278 err = snd_ctl_add(line6->card, snd_ctl_new1(&line6_control, line6pcm));
285 /* prepare pcm callback */
286 int snd_line6_prepare(struct snd_pcm_substream *substream)
288 struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
290 if (!test_and_set_bit(BIT_PREPARED, &line6pcm->flags)) {
291 unlink_wait_clear_audio_out_urbs(line6pcm);
292 line6pcm->pos_out = 0;
293 line6pcm->pos_out_done = 0;
295 unlink_wait_clear_audio_in_urbs(line6pcm);
296 line6pcm->bytes_out = 0;
297 line6pcm->pos_in_done = 0;
298 line6pcm->bytes_in = 0;