3d8d4dcfd4
As the control interface is now carried in struct snd_usb_audio, we can simplify the API a little and also drop the private ctrlif field from struct usb_mixer_interface. Also remove a left-over function prototype in pcm.h. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
449 lines
13 KiB
C
449 lines
13 KiB
C
/*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/audio.h>
|
|
#include <linux/usb/audio-v2.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
|
|
#include "usbaudio.h"
|
|
#include "card.h"
|
|
#include "proc.h"
|
|
#include "quirks.h"
|
|
#include "endpoint.h"
|
|
#include "urb.h"
|
|
#include "pcm.h"
|
|
#include "helper.h"
|
|
#include "format.h"
|
|
#include "clock.h"
|
|
|
|
/*
|
|
* free a substream
|
|
*/
|
|
static void free_substream(struct snd_usb_substream *subs)
|
|
{
|
|
struct list_head *p, *n;
|
|
|
|
if (!subs->num_formats)
|
|
return; /* not initialized */
|
|
list_for_each_safe(p, n, &subs->fmt_list) {
|
|
struct audioformat *fp = list_entry(p, struct audioformat, list);
|
|
kfree(fp->rate_table);
|
|
kfree(fp);
|
|
}
|
|
kfree(subs->rate_list.list);
|
|
}
|
|
|
|
|
|
/*
|
|
* free a usb stream instance
|
|
*/
|
|
static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
|
|
{
|
|
free_substream(&stream->substream[0]);
|
|
free_substream(&stream->substream[1]);
|
|
list_del(&stream->list);
|
|
kfree(stream);
|
|
}
|
|
|
|
static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
|
|
{
|
|
struct snd_usb_stream *stream = pcm->private_data;
|
|
if (stream) {
|
|
stream->pcm = NULL;
|
|
snd_usb_audio_stream_free(stream);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* add this endpoint to the chip instance.
|
|
* if a stream with the same endpoint already exists, append to it.
|
|
* if not, create a new pcm stream.
|
|
*/
|
|
int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
|
|
{
|
|
struct list_head *p;
|
|
struct snd_usb_stream *as;
|
|
struct snd_usb_substream *subs;
|
|
struct snd_pcm *pcm;
|
|
int err;
|
|
|
|
list_for_each(p, &chip->pcm_list) {
|
|
as = list_entry(p, struct snd_usb_stream, list);
|
|
if (as->fmt_type != fp->fmt_type)
|
|
continue;
|
|
subs = &as->substream[stream];
|
|
if (!subs->endpoint)
|
|
continue;
|
|
if (subs->endpoint == fp->endpoint) {
|
|
list_add_tail(&fp->list, &subs->fmt_list);
|
|
subs->num_formats++;
|
|
subs->formats |= fp->formats;
|
|
return 0;
|
|
}
|
|
}
|
|
/* look for an empty stream */
|
|
list_for_each(p, &chip->pcm_list) {
|
|
as = list_entry(p, struct snd_usb_stream, list);
|
|
if (as->fmt_type != fp->fmt_type)
|
|
continue;
|
|
subs = &as->substream[stream];
|
|
if (subs->endpoint)
|
|
continue;
|
|
err = snd_pcm_new_stream(as->pcm, stream, 1);
|
|
if (err < 0)
|
|
return err;
|
|
snd_usb_init_substream(as, stream, fp);
|
|
return 0;
|
|
}
|
|
|
|
/* create a new pcm */
|
|
as = kzalloc(sizeof(*as), GFP_KERNEL);
|
|
if (!as)
|
|
return -ENOMEM;
|
|
as->pcm_index = chip->pcm_devs;
|
|
as->chip = chip;
|
|
as->fmt_type = fp->fmt_type;
|
|
err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
|
|
stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
|
|
stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
|
|
&pcm);
|
|
if (err < 0) {
|
|
kfree(as);
|
|
return err;
|
|
}
|
|
as->pcm = pcm;
|
|
pcm->private_data = as;
|
|
pcm->private_free = snd_usb_audio_pcm_free;
|
|
pcm->info_flags = 0;
|
|
if (chip->pcm_devs > 0)
|
|
sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
|
|
else
|
|
strcpy(pcm->name, "USB Audio");
|
|
|
|
snd_usb_init_substream(as, stream, fp);
|
|
|
|
list_add(&as->list, &chip->pcm_list);
|
|
chip->pcm_devs++;
|
|
|
|
snd_usb_proc_pcm_format_add(as);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip,
|
|
struct usb_host_interface *alts,
|
|
int protocol, int iface_no)
|
|
{
|
|
/* parsed with a v1 header here. that's ok as we only look at the
|
|
* header first which is the same for both versions */
|
|
struct uac_iso_endpoint_descriptor *csep;
|
|
struct usb_interface_descriptor *altsd = get_iface_desc(alts);
|
|
int attributes = 0;
|
|
|
|
csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
|
|
|
|
/* Creamware Noah has this descriptor after the 2nd endpoint */
|
|
if (!csep && altsd->bNumEndpoints >= 2)
|
|
csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
|
|
|
|
if (!csep || csep->bLength < 7 ||
|
|
csep->bDescriptorSubtype != UAC_EP_GENERAL) {
|
|
snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
|
|
" class specific endpoint descriptor\n",
|
|
chip->dev->devnum, iface_no,
|
|
altsd->bAlternateSetting);
|
|
return 0;
|
|
}
|
|
|
|
if (protocol == UAC_VERSION_1) {
|
|
attributes = csep->bmAttributes;
|
|
} else {
|
|
struct uac2_iso_endpoint_descriptor *csep2 =
|
|
(struct uac2_iso_endpoint_descriptor *) csep;
|
|
|
|
attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX;
|
|
|
|
/* emulate the endpoint attributes of a v1 device */
|
|
if (csep2->bmControls & UAC2_CONTROL_PITCH)
|
|
attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL;
|
|
}
|
|
|
|
return attributes;
|
|
}
|
|
|
|
static struct uac2_input_terminal_descriptor *
|
|
snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface,
|
|
int terminal_id)
|
|
{
|
|
struct uac2_input_terminal_descriptor *term = NULL;
|
|
|
|
while ((term = snd_usb_find_csint_desc(ctrl_iface->extra,
|
|
ctrl_iface->extralen,
|
|
term, UAC_INPUT_TERMINAL))) {
|
|
if (term->bTerminalID == terminal_id)
|
|
return term;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct uac2_output_terminal_descriptor *
|
|
snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface,
|
|
int terminal_id)
|
|
{
|
|
struct uac2_output_terminal_descriptor *term = NULL;
|
|
|
|
while ((term = snd_usb_find_csint_desc(ctrl_iface->extra,
|
|
ctrl_iface->extralen,
|
|
term, UAC_OUTPUT_TERMINAL))) {
|
|
if (term->bTerminalID == terminal_id)
|
|
return term;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
|
|
{
|
|
struct usb_device *dev;
|
|
struct usb_interface *iface;
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface_descriptor *altsd;
|
|
int i, altno, err, stream;
|
|
int format = 0, num_channels = 0;
|
|
struct audioformat *fp = NULL;
|
|
int num, protocol, clock = 0;
|
|
struct uac_format_type_i_continuous_descriptor *fmt;
|
|
|
|
dev = chip->dev;
|
|
|
|
/* parse the interface's altsettings */
|
|
iface = usb_ifnum_to_if(dev, iface_no);
|
|
|
|
num = iface->num_altsetting;
|
|
|
|
/*
|
|
* Dallas DS4201 workaround: It presents 5 altsettings, but the last
|
|
* one misses syncpipe, and does not produce any sound.
|
|
*/
|
|
if (chip->usb_id == USB_ID(0x04fa, 0x4201))
|
|
num = 4;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
alts = &iface->altsetting[i];
|
|
altsd = get_iface_desc(alts);
|
|
protocol = altsd->bInterfaceProtocol;
|
|
/* skip invalid one */
|
|
if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
|
|
altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
|
|
(altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
|
|
altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
|
|
altsd->bNumEndpoints < 1 ||
|
|
le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
|
|
continue;
|
|
/* must be isochronous */
|
|
if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
|
|
USB_ENDPOINT_XFER_ISOC)
|
|
continue;
|
|
/* check direction */
|
|
stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
|
|
SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
|
|
altno = altsd->bAlternateSetting;
|
|
|
|
if (snd_usb_apply_interface_quirk(chip, iface_no, altno))
|
|
continue;
|
|
|
|
/* get audio formats */
|
|
switch (protocol) {
|
|
case UAC_VERSION_1: {
|
|
struct uac1_as_header_descriptor *as =
|
|
snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
|
|
|
|
if (!as) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
if (as->bLength < sizeof(*as)) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
format = le16_to_cpu(as->wFormatTag); /* remember the format value */
|
|
break;
|
|
}
|
|
|
|
case UAC_VERSION_2: {
|
|
struct uac2_input_terminal_descriptor *input_term;
|
|
struct uac2_output_terminal_descriptor *output_term;
|
|
struct uac2_as_header_descriptor *as =
|
|
snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
|
|
|
|
if (!as) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
if (as->bLength < sizeof(*as)) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
num_channels = as->bNrChannels;
|
|
format = le32_to_cpu(as->bmFormats);
|
|
|
|
/* lookup the terminal associated to this interface
|
|
* to extract the clock */
|
|
input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf,
|
|
as->bTerminalLink);
|
|
if (input_term) {
|
|
clock = input_term->bCSourceID;
|
|
break;
|
|
}
|
|
|
|
output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf,
|
|
as->bTerminalLink);
|
|
if (output_term) {
|
|
clock = output_term->bCSourceID;
|
|
break;
|
|
}
|
|
|
|
snd_printk(KERN_ERR "%d:%u:%d : bogus bTerminalLink %d\n",
|
|
dev->devnum, iface_no, altno, as->bTerminalLink);
|
|
continue;
|
|
}
|
|
|
|
default:
|
|
snd_printk(KERN_ERR "%d:%u:%d : unknown interface protocol %04x\n",
|
|
dev->devnum, iface_no, altno, protocol);
|
|
continue;
|
|
}
|
|
|
|
/* get format type */
|
|
fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE);
|
|
if (!fmt) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) ||
|
|
((protocol == UAC_VERSION_2) && (fmt->bLength != 6))) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Blue Microphones workaround: The last altsetting is identical
|
|
* with the previous one, except for a larger packet size, but
|
|
* is actually a mislabeled two-channel setting; ignore it.
|
|
*/
|
|
if (fmt->bNrChannels == 1 &&
|
|
fmt->bSubframeSize == 2 &&
|
|
altno == 2 && num == 3 &&
|
|
fp && fp->altsetting == 1 && fp->channels == 1 &&
|
|
fp->formats == SNDRV_PCM_FMTBIT_S16_LE &&
|
|
protocol == UAC_VERSION_1 &&
|
|
le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) ==
|
|
fp->maxpacksize * 2)
|
|
continue;
|
|
|
|
fp = kzalloc(sizeof(*fp), GFP_KERNEL);
|
|
if (! fp) {
|
|
snd_printk(KERN_ERR "cannot malloc\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fp->iface = iface_no;
|
|
fp->altsetting = altno;
|
|
fp->altset_idx = i;
|
|
fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
|
|
fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
|
|
fp->datainterval = snd_usb_parse_datainterval(chip, alts);
|
|
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
|
|
/* num_channels is only set for v2 interfaces */
|
|
fp->channels = num_channels;
|
|
if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
|
|
fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
|
|
* (fp->maxpacksize & 0x7ff);
|
|
fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no);
|
|
fp->clock = clock;
|
|
|
|
/* some quirks for attributes here */
|
|
|
|
switch (chip->usb_id) {
|
|
case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
|
|
/* Optoplay sets the sample rate attribute although
|
|
* it seems not supporting it in fact.
|
|
*/
|
|
fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
|
|
break;
|
|
case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
|
|
case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
|
|
case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra 8 */
|
|
case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
|
|
/* doesn't set the sample rate attribute, but supports it */
|
|
fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
|
|
break;
|
|
case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
|
|
case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
|
|
an older model 77d:223) */
|
|
/*
|
|
* plantronics headset and Griffin iMic have set adaptive-in
|
|
* although it's really not...
|
|
*/
|
|
fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
|
|
else
|
|
fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
|
|
break;
|
|
}
|
|
|
|
/* ok, let's parse further... */
|
|
if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) {
|
|
kfree(fp->rate_table);
|
|
kfree(fp);
|
|
fp = NULL;
|
|
continue;
|
|
}
|
|
|
|
snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint);
|
|
err = snd_usb_add_audio_endpoint(chip, stream, fp);
|
|
if (err < 0) {
|
|
kfree(fp->rate_table);
|
|
kfree(fp);
|
|
return err;
|
|
}
|
|
/* try to set the interface... */
|
|
usb_set_interface(chip->dev, iface_no, altno);
|
|
snd_usb_init_pitch(chip, iface_no, alts, fp);
|
|
snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max);
|
|
}
|
|
return 0;
|
|
}
|
|
|