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 <linux/slab.h>
16 #include <sound/core.h>
17 #include <sound/control.h>
18 #include <sound/pcm.h>
19 #include <sound/pcm_params.h>
27 /* trigger callback */
28 int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd)
30 struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
31 struct snd_pcm_substream *s;
35 spin_lock_irqsave(&line6pcm->lock_trigger, flags);
36 clear_bit(BIT_PREPARED, &line6pcm->flags);
38 snd_pcm_group_for_each_entry(s, substream) {
40 case SNDRV_PCM_STREAM_PLAYBACK:
41 err = snd_line6_playback_trigger(s, cmd);
44 spin_unlock_irqrestore(&line6pcm->lock_trigger,
51 case SNDRV_PCM_STREAM_CAPTURE:
52 err = snd_line6_capture_trigger(s, cmd);
55 spin_unlock_irqrestore(&line6pcm->lock_trigger,
63 dev_err(s2m(substream), "Unknown stream direction %d\n",
68 spin_unlock_irqrestore(&line6pcm->lock_trigger, flags);
72 /* control info callback */
73 static int snd_line6_control_info(struct snd_kcontrol *kcontrol,
74 struct snd_ctl_elem_info *uinfo)
76 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
78 uinfo->value.integer.min = 0;
79 uinfo->value.integer.max = 256;
83 /* control get callback */
84 static int snd_line6_control_get(struct snd_kcontrol *kcontrol,
85 struct snd_ctl_elem_value *ucontrol)
88 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
91 ucontrol->value.integer.value[i] = line6pcm->volume[i];
96 /* control put callback */
97 static int snd_line6_control_put(struct snd_kcontrol *kcontrol,
98 struct snd_ctl_elem_value *ucontrol)
101 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
104 if (line6pcm->volume[i] != ucontrol->value.integer.value[i]) {
105 line6pcm->volume[i] = ucontrol->value.integer.value[i];
112 /* control definition */
113 static struct snd_kcontrol_new line6_control = {
114 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
115 .name = "PCM Playback Volume",
117 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
118 .info = snd_line6_control_info,
119 .get = snd_line6_control_get,
120 .put = snd_line6_control_put
124 Cleanup the PCM device.
126 static void line6_cleanup_pcm(struct snd_pcm *pcm)
129 struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm);
131 for (i = LINE6_ISO_BUFFERS; i--;) {
132 if (line6pcm->urb_audio_out[i]) {
133 usb_kill_urb(line6pcm->urb_audio_out[i]);
134 usb_free_urb(line6pcm->urb_audio_out[i]);
136 if (line6pcm->urb_audio_in[i]) {
137 usb_kill_urb(line6pcm->urb_audio_in[i]);
138 usb_free_urb(line6pcm->urb_audio_in[i]);
143 /* create a PCM device */
144 static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm)
149 err = snd_pcm_new(line6pcm->line6->card,
150 (char *)line6pcm->line6->properties->name,
155 pcm->private_data = line6pcm;
156 pcm->private_free = line6_cleanup_pcm;
158 strcpy(pcm->name, line6pcm->line6->properties->name);
161 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
162 &snd_line6_playback_ops);
163 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops);
165 /* pre-allocation of buffers */
166 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
167 snd_dma_continuous_data(GFP_KERNEL),
168 64 * 1024, 128 * 1024);
173 /* PCM device destructor */
174 static int snd_line6_pcm_free(struct snd_device *device)
180 Create and register the PCM device and mixer entries.
181 Create URBs for playback and capture.
183 int line6_init_pcm(struct usb_line6 *line6,
184 struct line6_pcm_properties *properties)
186 static struct snd_device_ops pcm_ops = {
187 .dev_free = snd_line6_pcm_free,
191 int ep_read = 0, ep_write = 0;
192 struct snd_line6_pcm *line6pcm;
194 if (!(line6->properties->capabilities & LINE6_BIT_PCM))
195 return 0; /* skip PCM initialization and report success */
197 /* initialize PCM subsystem based on product id: */
198 switch (line6->product) {
199 case LINE6_DEVID_BASSPODXT:
200 case LINE6_DEVID_BASSPODXTLIVE:
201 case LINE6_DEVID_BASSPODXTPRO:
202 case LINE6_DEVID_PODXT:
203 case LINE6_DEVID_PODXTLIVE:
204 case LINE6_DEVID_PODXTPRO:
209 case LINE6_DEVID_PODX3:
210 case LINE6_DEVID_PODX3LIVE:
215 case LINE6_DEVID_POCKETPOD:
220 case LINE6_DEVID_GUITARPORT:
221 case LINE6_DEVID_TONEPORT_GX:
226 case LINE6_DEVID_TONEPORT_UX1:
231 case LINE6_DEVID_TONEPORT_UX2:
240 line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL);
242 if (line6pcm == NULL)
245 line6pcm->volume[0] = line6pcm->volume[1] = 128;
246 line6pcm->line6 = line6;
247 line6pcm->ep_audio_read = ep_read;
248 line6pcm->ep_audio_write = ep_write;
249 line6pcm->max_packet_size = usb_maxpacket(line6->usbdev,
250 usb_rcvintpipe(line6->usbdev,
253 line6pcm->properties = properties;
254 line6->line6pcm = line6pcm;
257 err = snd_device_new(line6->card, SNDRV_DEV_PCM, line6, &pcm_ops);
261 snd_card_set_dev(line6->card, line6->ifcdev);
263 err = snd_line6_new_pcm(line6pcm);
267 spin_lock_init(&line6pcm->lock_audio_out);
268 spin_lock_init(&line6pcm->lock_audio_in);
269 spin_lock_init(&line6pcm->lock_trigger);
271 err = create_audio_out_urbs(line6pcm);
275 err = create_audio_in_urbs(line6pcm);
280 err = snd_ctl_add(line6->card, snd_ctl_new1(&line6_control, line6pcm));
287 /* prepare pcm callback */
288 int snd_line6_prepare(struct snd_pcm_substream *substream)
290 struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
292 if (!test_and_set_bit(BIT_PREPARED, &line6pcm->flags)) {
293 unlink_wait_clear_audio_out_urbs(line6pcm);
294 line6pcm->pos_out = 0;
295 line6pcm->pos_out_done = 0;
297 unlink_wait_clear_audio_in_urbs(line6pcm);
298 line6pcm->bytes_out = 0;
299 line6pcm->pos_in_done = 0;
300 line6pcm->bytes_in = 0;