2 * Line6 Linux USB driver - 0.9.1beta
4 * Copyright (C) 2004-2010 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.
12 #include <linux/slab.h>
13 #include <sound/core.h>
14 #include <sound/control.h>
15 #include <sound/pcm.h>
16 #include <sound/pcm_params.h>
24 #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
26 static struct snd_line6_pcm
*dev2pcm(struct device
*dev
)
28 struct usb_interface
*interface
= to_usb_interface(dev
);
29 struct usb_line6
*line6
= usb_get_intfdata(interface
);
30 struct snd_line6_pcm
*line6pcm
= line6
->line6pcm
;
35 "read" request on "impulse_volume" special file.
37 static ssize_t
pcm_get_impulse_volume(struct device
*dev
,
38 struct device_attribute
*attr
, char *buf
)
40 return sprintf(buf
, "%d\n", dev2pcm(dev
)->impulse_volume
);
44 "write" request on "impulse_volume" special file.
46 static ssize_t
pcm_set_impulse_volume(struct device
*dev
,
47 struct device_attribute
*attr
,
48 const char *buf
, size_t count
)
50 struct snd_line6_pcm
*line6pcm
= dev2pcm(dev
);
54 ret
= kstrtoint(buf
, 10, &value
);
58 line6pcm
->impulse_volume
= value
;
61 line6_pcm_acquire(line6pcm
, LINE6_BITS_PCM_IMPULSE
);
63 line6_pcm_release(line6pcm
, LINE6_BITS_PCM_IMPULSE
);
69 "read" request on "impulse_period" special file.
71 static ssize_t
pcm_get_impulse_period(struct device
*dev
,
72 struct device_attribute
*attr
, char *buf
)
74 return sprintf(buf
, "%d\n", dev2pcm(dev
)->impulse_period
);
78 "write" request on "impulse_period" special file.
80 static ssize_t
pcm_set_impulse_period(struct device
*dev
,
81 struct device_attribute
*attr
,
82 const char *buf
, size_t count
)
87 ret
= kstrtoint(buf
, 10, &value
);
91 dev2pcm(dev
)->impulse_period
= value
;
95 static DEVICE_ATTR(impulse_volume
, S_IWUSR
| S_IRUGO
, pcm_get_impulse_volume
,
96 pcm_set_impulse_volume
);
97 static DEVICE_ATTR(impulse_period
, S_IWUSR
| S_IRUGO
, pcm_get_impulse_period
,
98 pcm_set_impulse_period
);
102 static bool test_flags(unsigned long flags0
, unsigned long flags1
,
105 return ((flags0
& mask
) == 0) && ((flags1
& mask
) != 0);
108 int line6_pcm_acquire(struct snd_line6_pcm
*line6pcm
, int channels
)
110 unsigned long flags_old
=
111 __sync_fetch_and_or(&line6pcm
->flags
, channels
);
112 unsigned long flags_new
= flags_old
| channels
;
113 unsigned long flags_final
= flags_old
;
116 line6pcm
->prev_fbuf
= NULL
;
118 if (test_flags(flags_old
, flags_new
, LINE6_BITS_CAPTURE_BUFFER
)) {
119 /* Invoked multiple times in a row so allocate once only */
120 if (!line6pcm
->buffer_in
) {
121 line6pcm
->buffer_in
=
122 kmalloc(LINE6_ISO_BUFFERS
* LINE6_ISO_PACKETS
*
123 line6pcm
->max_packet_size
, GFP_KERNEL
);
124 if (!line6pcm
->buffer_in
) {
126 goto pcm_acquire_error
;
129 flags_final
|= channels
& LINE6_BITS_CAPTURE_BUFFER
;
133 if (test_flags(flags_old
, flags_new
, LINE6_BITS_CAPTURE_STREAM
)) {
135 Waiting for completion of active URBs in the stop handler is
136 a bug, we therefore report an error if capturing is restarted
139 if (line6pcm
->active_urb_in
| line6pcm
->unlink_urb_in
) {
140 dev_err(line6pcm
->line6
->ifcdev
, "Device not yet ready\n");
144 line6pcm
->count_in
= 0;
145 line6pcm
->prev_fsize
= 0;
146 err
= line6_submit_audio_in_all_urbs(line6pcm
);
149 goto pcm_acquire_error
;
151 flags_final
|= channels
& LINE6_BITS_CAPTURE_STREAM
;
154 if (test_flags(flags_old
, flags_new
, LINE6_BITS_PLAYBACK_BUFFER
)) {
155 /* Invoked multiple times in a row so allocate once only */
156 if (!line6pcm
->buffer_out
) {
157 line6pcm
->buffer_out
=
158 kmalloc(LINE6_ISO_BUFFERS
* LINE6_ISO_PACKETS
*
159 line6pcm
->max_packet_size
, GFP_KERNEL
);
160 if (!line6pcm
->buffer_out
) {
162 goto pcm_acquire_error
;
165 flags_final
|= channels
& LINE6_BITS_PLAYBACK_BUFFER
;
169 if (test_flags(flags_old
, flags_new
, LINE6_BITS_PLAYBACK_STREAM
)) {
171 See comment above regarding PCM restart.
173 if (line6pcm
->active_urb_out
| line6pcm
->unlink_urb_out
) {
174 dev_err(line6pcm
->line6
->ifcdev
, "Device not yet ready\n");
178 line6pcm
->count_out
= 0;
179 err
= line6_submit_audio_out_all_urbs(line6pcm
);
182 goto pcm_acquire_error
;
184 flags_final
|= channels
& LINE6_BITS_PLAYBACK_STREAM
;
191 If not all requested resources/streams could be obtained, release
192 those which were successfully obtained (if any).
194 line6_pcm_release(line6pcm
, flags_final
& channels
);
198 int line6_pcm_release(struct snd_line6_pcm
*line6pcm
, int channels
)
200 unsigned long flags_old
=
201 __sync_fetch_and_and(&line6pcm
->flags
, ~channels
);
202 unsigned long flags_new
= flags_old
& ~channels
;
204 if (test_flags(flags_new
, flags_old
, LINE6_BITS_CAPTURE_STREAM
))
205 line6_unlink_audio_in_urbs(line6pcm
);
207 if (test_flags(flags_new
, flags_old
, LINE6_BITS_CAPTURE_BUFFER
)) {
208 line6_wait_clear_audio_in_urbs(line6pcm
);
209 line6_free_capture_buffer(line6pcm
);
212 if (test_flags(flags_new
, flags_old
, LINE6_BITS_PLAYBACK_STREAM
))
213 line6_unlink_audio_out_urbs(line6pcm
);
215 if (test_flags(flags_new
, flags_old
, LINE6_BITS_PLAYBACK_BUFFER
)) {
216 line6_wait_clear_audio_out_urbs(line6pcm
);
217 line6_free_playback_buffer(line6pcm
);
223 /* trigger callback */
224 int snd_line6_trigger(struct snd_pcm_substream
*substream
, int cmd
)
226 struct snd_line6_pcm
*line6pcm
= snd_pcm_substream_chip(substream
);
227 struct snd_pcm_substream
*s
;
231 spin_lock_irqsave(&line6pcm
->lock_trigger
, flags
);
232 clear_bit(LINE6_INDEX_PREPARED
, &line6pcm
->flags
);
234 snd_pcm_group_for_each_entry(s
, substream
) {
236 case SNDRV_PCM_STREAM_PLAYBACK
:
237 err
= snd_line6_playback_trigger(line6pcm
, cmd
);
240 spin_unlock_irqrestore(&line6pcm
->lock_trigger
,
247 case SNDRV_PCM_STREAM_CAPTURE
:
248 err
= snd_line6_capture_trigger(line6pcm
, cmd
);
251 spin_unlock_irqrestore(&line6pcm
->lock_trigger
,
259 dev_err(line6pcm
->line6
->ifcdev
,
260 "Unknown stream direction %d\n", s
->stream
);
264 spin_unlock_irqrestore(&line6pcm
->lock_trigger
, flags
);
268 /* control info callback */
269 static int snd_line6_control_playback_info(struct snd_kcontrol
*kcontrol
,
270 struct snd_ctl_elem_info
*uinfo
)
272 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
274 uinfo
->value
.integer
.min
= 0;
275 uinfo
->value
.integer
.max
= 256;
279 /* control get callback */
280 static int snd_line6_control_playback_get(struct snd_kcontrol
*kcontrol
,
281 struct snd_ctl_elem_value
*ucontrol
)
284 struct snd_line6_pcm
*line6pcm
= snd_kcontrol_chip(kcontrol
);
287 ucontrol
->value
.integer
.value
[i
] = line6pcm
->volume_playback
[i
];
292 /* control put callback */
293 static int snd_line6_control_playback_put(struct snd_kcontrol
*kcontrol
,
294 struct snd_ctl_elem_value
*ucontrol
)
297 struct snd_line6_pcm
*line6pcm
= snd_kcontrol_chip(kcontrol
);
300 if (line6pcm
->volume_playback
[i
] !=
301 ucontrol
->value
.integer
.value
[i
]) {
302 line6pcm
->volume_playback
[i
] =
303 ucontrol
->value
.integer
.value
[i
];
310 /* control definition */
311 static struct snd_kcontrol_new line6_control_playback
= {
312 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
313 .name
= "PCM Playback Volume",
315 .access
= SNDRV_CTL_ELEM_ACCESS_READWRITE
,
316 .info
= snd_line6_control_playback_info
,
317 .get
= snd_line6_control_playback_get
,
318 .put
= snd_line6_control_playback_put
322 Cleanup the PCM device.
324 static void line6_cleanup_pcm(struct snd_pcm
*pcm
)
327 struct snd_line6_pcm
*line6pcm
= snd_pcm_chip(pcm
);
329 #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
330 device_remove_file(line6pcm
->line6
->ifcdev
, &dev_attr_impulse_volume
);
331 device_remove_file(line6pcm
->line6
->ifcdev
, &dev_attr_impulse_period
);
334 for (i
= LINE6_ISO_BUFFERS
; i
--;) {
335 if (line6pcm
->urb_audio_out
[i
]) {
336 usb_kill_urb(line6pcm
->urb_audio_out
[i
]);
337 usb_free_urb(line6pcm
->urb_audio_out
[i
]);
339 if (line6pcm
->urb_audio_in
[i
]) {
340 usb_kill_urb(line6pcm
->urb_audio_in
[i
]);
341 usb_free_urb(line6pcm
->urb_audio_in
[i
]);
346 /* create a PCM device */
347 static int snd_line6_new_pcm(struct snd_line6_pcm
*line6pcm
)
352 err
= snd_pcm_new(line6pcm
->line6
->card
,
353 (char *)line6pcm
->line6
->properties
->name
,
358 pcm
->private_data
= line6pcm
;
359 pcm
->private_free
= line6_cleanup_pcm
;
361 strcpy(pcm
->name
, line6pcm
->line6
->properties
->name
);
364 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
,
365 &snd_line6_playback_ops
);
366 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &snd_line6_capture_ops
);
368 /* pre-allocation of buffers */
369 snd_pcm_lib_preallocate_pages_for_all(pcm
, SNDRV_DMA_TYPE_CONTINUOUS
,
370 snd_dma_continuous_data
371 (GFP_KERNEL
), 64 * 1024,
377 /* PCM device destructor */
378 static int snd_line6_pcm_free(struct snd_device
*device
)
384 Stop substream if still running.
386 static void pcm_disconnect_substream(struct snd_pcm_substream
*substream
)
388 if (substream
->runtime
&& snd_pcm_running(substream
))
389 snd_pcm_stop(substream
, SNDRV_PCM_STATE_DISCONNECTED
);
395 void line6_pcm_disconnect(struct snd_line6_pcm
*line6pcm
)
397 pcm_disconnect_substream(get_substream
398 (line6pcm
, SNDRV_PCM_STREAM_CAPTURE
));
399 pcm_disconnect_substream(get_substream
400 (line6pcm
, SNDRV_PCM_STREAM_PLAYBACK
));
401 line6_unlink_wait_clear_audio_out_urbs(line6pcm
);
402 line6_unlink_wait_clear_audio_in_urbs(line6pcm
);
406 Create and register the PCM device and mixer entries.
407 Create URBs for playback and capture.
409 int line6_init_pcm(struct usb_line6
*line6
,
410 struct line6_pcm_properties
*properties
)
412 static struct snd_device_ops pcm_ops
= {
413 .dev_free
= snd_line6_pcm_free
,
417 int ep_read
= 0, ep_write
= 0;
418 struct snd_line6_pcm
*line6pcm
;
420 if (!(line6
->properties
->capabilities
& LINE6_BIT_PCM
))
421 return 0; /* skip PCM initialization and report success */
423 /* initialize PCM subsystem based on product id: */
424 switch (line6
->product
) {
425 case LINE6_DEVID_BASSPODXT
:
426 case LINE6_DEVID_BASSPODXTLIVE
:
427 case LINE6_DEVID_BASSPODXTPRO
:
428 case LINE6_DEVID_PODXT
:
429 case LINE6_DEVID_PODXTLIVE
:
430 case LINE6_DEVID_PODXTPRO
:
431 case LINE6_DEVID_PODHD300
:
436 case LINE6_DEVID_PODHD500
:
437 case LINE6_DEVID_PODX3
:
438 case LINE6_DEVID_PODX3LIVE
:
443 case LINE6_DEVID_POCKETPOD
:
448 case LINE6_DEVID_GUITARPORT
:
449 case LINE6_DEVID_PODSTUDIO_GX
:
450 case LINE6_DEVID_PODSTUDIO_UX1
:
451 case LINE6_DEVID_PODSTUDIO_UX2
:
452 case LINE6_DEVID_TONEPORT_GX
:
453 case LINE6_DEVID_TONEPORT_UX1
:
454 case LINE6_DEVID_TONEPORT_UX2
:
459 /* this is for interface_number == 1:
460 case LINE6_DEVID_TONEPORT_UX2:
461 case LINE6_DEVID_PODSTUDIO_UX2:
470 line6pcm
= kzalloc(sizeof(struct snd_line6_pcm
), GFP_KERNEL
);
472 if (line6pcm
== NULL
)
475 line6pcm
->volume_playback
[0] = line6pcm
->volume_playback
[1] = 255;
476 line6pcm
->volume_monitor
= 255;
477 line6pcm
->line6
= line6
;
478 line6pcm
->ep_audio_read
= ep_read
;
479 line6pcm
->ep_audio_write
= ep_write
;
481 /* Read and write buffers are sized identically, so choose minimum */
482 line6pcm
->max_packet_size
= min(
483 usb_maxpacket(line6
->usbdev
,
484 usb_rcvisocpipe(line6
->usbdev
, ep_read
), 0),
485 usb_maxpacket(line6
->usbdev
,
486 usb_sndisocpipe(line6
->usbdev
, ep_write
), 1));
488 line6pcm
->properties
= properties
;
489 line6
->line6pcm
= line6pcm
;
492 err
= snd_device_new(line6
->card
, SNDRV_DEV_PCM
, line6
, &pcm_ops
);
496 snd_card_set_dev(line6
->card
, line6
->ifcdev
);
498 err
= snd_line6_new_pcm(line6pcm
);
502 spin_lock_init(&line6pcm
->lock_audio_out
);
503 spin_lock_init(&line6pcm
->lock_audio_in
);
504 spin_lock_init(&line6pcm
->lock_trigger
);
506 err
= line6_create_audio_out_urbs(line6pcm
);
510 err
= line6_create_audio_in_urbs(line6pcm
);
516 snd_ctl_add(line6
->card
,
517 snd_ctl_new1(&line6_control_playback
, line6pcm
));
521 #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
522 /* impulse response test: */
523 err
= device_create_file(line6
->ifcdev
, &dev_attr_impulse_volume
);
527 err
= device_create_file(line6
->ifcdev
, &dev_attr_impulse_period
);
531 line6pcm
->impulse_period
= LINE6_IMPULSE_DEFAULT_PERIOD
;
537 /* prepare pcm callback */
538 int snd_line6_prepare(struct snd_pcm_substream
*substream
)
540 struct snd_line6_pcm
*line6pcm
= snd_pcm_substream_chip(substream
);
542 switch (substream
->stream
) {
543 case SNDRV_PCM_STREAM_PLAYBACK
:
544 if ((line6pcm
->flags
& LINE6_BITS_PLAYBACK_STREAM
) == 0)
545 line6_unlink_wait_clear_audio_out_urbs(line6pcm
);
549 case SNDRV_PCM_STREAM_CAPTURE
:
550 if ((line6pcm
->flags
& LINE6_BITS_CAPTURE_STREAM
) == 0)
551 line6_unlink_wait_clear_audio_in_urbs(line6pcm
);
559 if (!test_and_set_bit(LINE6_INDEX_PREPARED
, &line6pcm
->flags
)) {
560 line6pcm
->count_out
= 0;
561 line6pcm
->pos_out
= 0;
562 line6pcm
->pos_out_done
= 0;
563 line6pcm
->bytes_out
= 0;
564 line6pcm
->count_in
= 0;
565 line6pcm
->pos_in_done
= 0;
566 line6pcm
->bytes_in
= 0;