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1253 lines
32 KiB
1253 lines
32 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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*/ |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/usb.h> |
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#include <linux/usb/audio.h> |
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#include <linux/usb/audio-v2.h> |
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#include <linux/usb/audio-v3.h> |
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|
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/control.h> |
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#include <sound/tlv.h> |
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#include "usbaudio.h" |
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#include "card.h" |
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#include "proc.h" |
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#include "quirks.h" |
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#include "endpoint.h" |
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#include "pcm.h" |
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#include "helper.h" |
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#include "format.h" |
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#include "clock.h" |
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#include "stream.h" |
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#include "power.h" |
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#include "media.h" |
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static void audioformat_free(struct audioformat *fp) |
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{ |
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list_del(&fp->list); /* unlink for avoiding double-free */ |
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kfree(fp->rate_table); |
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kfree(fp->chmap); |
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kfree(fp); |
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} |
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/* |
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* free a substream |
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*/ |
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static void free_substream(struct snd_usb_substream *subs) |
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{ |
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struct audioformat *fp, *n; |
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|
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if (!subs->num_formats) |
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return; /* not initialized */ |
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list_for_each_entry_safe(fp, n, &subs->fmt_list, list) |
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audioformat_free(fp); |
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kfree(subs->str_pd); |
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snd_media_stream_delete(subs); |
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} |
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/* |
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* free a usb stream instance |
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*/ |
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static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) |
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{ |
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free_substream(&stream->substream[0]); |
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free_substream(&stream->substream[1]); |
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list_del(&stream->list); |
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kfree(stream); |
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} |
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static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) |
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{ |
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struct snd_usb_stream *stream = pcm->private_data; |
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if (stream) { |
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stream->pcm = NULL; |
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snd_usb_audio_stream_free(stream); |
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} |
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} |
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/* |
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* initialize the substream instance. |
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*/ |
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|
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static void snd_usb_init_substream(struct snd_usb_stream *as, |
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int stream, |
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struct audioformat *fp, |
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struct snd_usb_power_domain *pd) |
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{ |
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struct snd_usb_substream *subs = &as->substream[stream]; |
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|
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INIT_LIST_HEAD(&subs->fmt_list); |
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spin_lock_init(&subs->lock); |
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subs->stream = as; |
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subs->direction = stream; |
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subs->dev = as->chip->dev; |
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subs->txfr_quirk = as->chip->txfr_quirk; |
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subs->tx_length_quirk = as->chip->tx_length_quirk; |
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subs->speed = snd_usb_get_speed(subs->dev); |
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subs->pkt_offset_adj = 0; |
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subs->stream_offset_adj = 0; |
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snd_usb_set_pcm_ops(as->pcm, stream); |
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list_add_tail(&fp->list, &subs->fmt_list); |
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subs->formats |= fp->formats; |
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subs->num_formats++; |
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subs->fmt_type = fp->fmt_type; |
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subs->ep_num = fp->endpoint; |
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if (fp->channels > subs->channels_max) |
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subs->channels_max = fp->channels; |
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|
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if (pd) { |
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subs->str_pd = pd; |
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/* Initialize Power Domain to idle status D1 */ |
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snd_usb_power_domain_set(subs->stream->chip, pd, |
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UAC3_PD_STATE_D1); |
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} |
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snd_usb_preallocate_buffer(subs); |
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} |
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/* kctl callbacks for usb-audio channel maps */ |
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static int usb_chmap_ctl_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); |
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struct snd_usb_substream *subs = info->private_data; |
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|
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = subs->channels_max; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = SNDRV_CHMAP_LAST; |
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return 0; |
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} |
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/* check whether a duplicated entry exists in the audiofmt list */ |
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static bool have_dup_chmap(struct snd_usb_substream *subs, |
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struct audioformat *fp) |
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{ |
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struct audioformat *prev = fp; |
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list_for_each_entry_continue_reverse(prev, &subs->fmt_list, list) { |
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if (prev->chmap && |
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!memcmp(prev->chmap, fp->chmap, sizeof(*fp->chmap))) |
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return true; |
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} |
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return false; |
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} |
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static int usb_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag, |
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unsigned int size, unsigned int __user *tlv) |
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{ |
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struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); |
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struct snd_usb_substream *subs = info->private_data; |
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struct audioformat *fp; |
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unsigned int __user *dst; |
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int count = 0; |
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if (size < 8) |
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return -ENOMEM; |
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if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv)) |
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return -EFAULT; |
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size -= 8; |
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dst = tlv + 2; |
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list_for_each_entry(fp, &subs->fmt_list, list) { |
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int i, ch_bytes; |
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if (!fp->chmap) |
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continue; |
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if (have_dup_chmap(subs, fp)) |
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continue; |
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/* copy the entry */ |
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ch_bytes = fp->chmap->channels * 4; |
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if (size < 8 + ch_bytes) |
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return -ENOMEM; |
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if (put_user(SNDRV_CTL_TLVT_CHMAP_FIXED, dst) || |
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put_user(ch_bytes, dst + 1)) |
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return -EFAULT; |
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dst += 2; |
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for (i = 0; i < fp->chmap->channels; i++, dst++) { |
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if (put_user(fp->chmap->map[i], dst)) |
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return -EFAULT; |
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} |
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count += 8 + ch_bytes; |
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size -= 8 + ch_bytes; |
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} |
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if (put_user(count, tlv + 1)) |
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return -EFAULT; |
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return 0; |
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} |
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static int usb_chmap_ctl_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); |
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struct snd_usb_substream *subs = info->private_data; |
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struct snd_pcm_chmap_elem *chmap = NULL; |
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int i = 0; |
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if (subs->cur_audiofmt) |
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chmap = subs->cur_audiofmt->chmap; |
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if (chmap) { |
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for (i = 0; i < chmap->channels; i++) |
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ucontrol->value.integer.value[i] = chmap->map[i]; |
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} |
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for (; i < subs->channels_max; i++) |
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ucontrol->value.integer.value[i] = 0; |
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return 0; |
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} |
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/* create a chmap kctl assigned to the given USB substream */ |
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static int add_chmap(struct snd_pcm *pcm, int stream, |
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struct snd_usb_substream *subs) |
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{ |
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struct audioformat *fp; |
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struct snd_pcm_chmap *chmap; |
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struct snd_kcontrol *kctl; |
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int err; |
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list_for_each_entry(fp, &subs->fmt_list, list) |
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if (fp->chmap) |
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goto ok; |
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/* no chmap is found */ |
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return 0; |
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ok: |
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err = snd_pcm_add_chmap_ctls(pcm, stream, NULL, 0, 0, &chmap); |
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if (err < 0) |
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return err; |
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/* override handlers */ |
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chmap->private_data = subs; |
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kctl = chmap->kctl; |
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kctl->info = usb_chmap_ctl_info; |
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kctl->get = usb_chmap_ctl_get; |
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kctl->tlv.c = usb_chmap_ctl_tlv; |
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return 0; |
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} |
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/* convert from USB ChannelConfig bits to ALSA chmap element */ |
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static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits, |
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int protocol) |
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{ |
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static const unsigned int uac1_maps[] = { |
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SNDRV_CHMAP_FL, /* left front */ |
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SNDRV_CHMAP_FR, /* right front */ |
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SNDRV_CHMAP_FC, /* center front */ |
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SNDRV_CHMAP_LFE, /* LFE */ |
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SNDRV_CHMAP_SL, /* left surround */ |
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SNDRV_CHMAP_SR, /* right surround */ |
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SNDRV_CHMAP_FLC, /* left of center */ |
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SNDRV_CHMAP_FRC, /* right of center */ |
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SNDRV_CHMAP_RC, /* surround */ |
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SNDRV_CHMAP_SL, /* side left */ |
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SNDRV_CHMAP_SR, /* side right */ |
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SNDRV_CHMAP_TC, /* top */ |
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0 /* terminator */ |
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}; |
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static const unsigned int uac2_maps[] = { |
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SNDRV_CHMAP_FL, /* front left */ |
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SNDRV_CHMAP_FR, /* front right */ |
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SNDRV_CHMAP_FC, /* front center */ |
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SNDRV_CHMAP_LFE, /* LFE */ |
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SNDRV_CHMAP_RL, /* back left */ |
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SNDRV_CHMAP_RR, /* back right */ |
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SNDRV_CHMAP_FLC, /* front left of center */ |
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SNDRV_CHMAP_FRC, /* front right of center */ |
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SNDRV_CHMAP_RC, /* back center */ |
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SNDRV_CHMAP_SL, /* side left */ |
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SNDRV_CHMAP_SR, /* side right */ |
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SNDRV_CHMAP_TC, /* top center */ |
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SNDRV_CHMAP_TFL, /* top front left */ |
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SNDRV_CHMAP_TFC, /* top front center */ |
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SNDRV_CHMAP_TFR, /* top front right */ |
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SNDRV_CHMAP_TRL, /* top back left */ |
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SNDRV_CHMAP_TRC, /* top back center */ |
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SNDRV_CHMAP_TRR, /* top back right */ |
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SNDRV_CHMAP_TFLC, /* top front left of center */ |
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SNDRV_CHMAP_TFRC, /* top front right of center */ |
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SNDRV_CHMAP_LLFE, /* left LFE */ |
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SNDRV_CHMAP_RLFE, /* right LFE */ |
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SNDRV_CHMAP_TSL, /* top side left */ |
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SNDRV_CHMAP_TSR, /* top side right */ |
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SNDRV_CHMAP_BC, /* bottom center */ |
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SNDRV_CHMAP_RLC, /* back left of center */ |
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SNDRV_CHMAP_RRC, /* back right of center */ |
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0 /* terminator */ |
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}; |
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struct snd_pcm_chmap_elem *chmap; |
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const unsigned int *maps; |
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int c; |
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if (channels > ARRAY_SIZE(chmap->map)) |
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return NULL; |
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chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); |
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if (!chmap) |
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return NULL; |
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maps = protocol == UAC_VERSION_2 ? uac2_maps : uac1_maps; |
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chmap->channels = channels; |
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c = 0; |
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if (bits) { |
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for (; bits && *maps; maps++, bits >>= 1) |
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if (bits & 1) |
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chmap->map[c++] = *maps; |
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} else { |
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/* If we're missing wChannelConfig, then guess something |
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to make sure the channel map is not skipped entirely */ |
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if (channels == 1) |
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chmap->map[c++] = SNDRV_CHMAP_MONO; |
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else |
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for (; c < channels && *maps; maps++) |
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chmap->map[c++] = *maps; |
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} |
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for (; c < channels; c++) |
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chmap->map[c] = SNDRV_CHMAP_UNKNOWN; |
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return chmap; |
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} |
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/* UAC3 device stores channels information in Cluster Descriptors */ |
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static struct |
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snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluster_header_descriptor |
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*cluster) |
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{ |
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unsigned int channels = cluster->bNrChannels; |
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struct snd_pcm_chmap_elem *chmap; |
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void *p = cluster; |
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int len, c; |
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if (channels > ARRAY_SIZE(chmap->map)) |
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return NULL; |
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chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); |
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if (!chmap) |
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return NULL; |
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len = le16_to_cpu(cluster->wLength); |
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c = 0; |
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p += sizeof(struct uac3_cluster_header_descriptor); |
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while (((p - (void *)cluster) < len) && (c < channels)) { |
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struct uac3_cluster_segment_descriptor *cs_desc = p; |
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u16 cs_len; |
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u8 cs_type; |
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cs_len = le16_to_cpu(cs_desc->wLength); |
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cs_type = cs_desc->bSegmentType; |
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if (cs_type == UAC3_CHANNEL_INFORMATION) { |
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struct uac3_cluster_information_segment_descriptor *is = p; |
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unsigned char map; |
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|
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/* |
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* TODO: this conversion is not complete, update it |
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* after adding UAC3 values to asound.h |
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*/ |
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switch (is->bChRelationship) { |
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case UAC3_CH_MONO: |
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map = SNDRV_CHMAP_MONO; |
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break; |
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case UAC3_CH_LEFT: |
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case UAC3_CH_FRONT_LEFT: |
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case UAC3_CH_HEADPHONE_LEFT: |
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map = SNDRV_CHMAP_FL; |
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break; |
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case UAC3_CH_RIGHT: |
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case UAC3_CH_FRONT_RIGHT: |
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case UAC3_CH_HEADPHONE_RIGHT: |
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map = SNDRV_CHMAP_FR; |
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break; |
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case UAC3_CH_FRONT_CENTER: |
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map = SNDRV_CHMAP_FC; |
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break; |
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case UAC3_CH_FRONT_LEFT_OF_CENTER: |
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map = SNDRV_CHMAP_FLC; |
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break; |
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case UAC3_CH_FRONT_RIGHT_OF_CENTER: |
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map = SNDRV_CHMAP_FRC; |
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break; |
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case UAC3_CH_SIDE_LEFT: |
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map = SNDRV_CHMAP_SL; |
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break; |
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case UAC3_CH_SIDE_RIGHT: |
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map = SNDRV_CHMAP_SR; |
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break; |
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case UAC3_CH_BACK_LEFT: |
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map = SNDRV_CHMAP_RL; |
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break; |
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case UAC3_CH_BACK_RIGHT: |
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map = SNDRV_CHMAP_RR; |
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break; |
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case UAC3_CH_BACK_CENTER: |
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map = SNDRV_CHMAP_RC; |
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break; |
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case UAC3_CH_BACK_LEFT_OF_CENTER: |
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map = SNDRV_CHMAP_RLC; |
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break; |
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case UAC3_CH_BACK_RIGHT_OF_CENTER: |
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map = SNDRV_CHMAP_RRC; |
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break; |
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case UAC3_CH_TOP_CENTER: |
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map = SNDRV_CHMAP_TC; |
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break; |
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case UAC3_CH_TOP_FRONT_LEFT: |
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map = SNDRV_CHMAP_TFL; |
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break; |
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case UAC3_CH_TOP_FRONT_RIGHT: |
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map = SNDRV_CHMAP_TFR; |
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break; |
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case UAC3_CH_TOP_FRONT_CENTER: |
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map = SNDRV_CHMAP_TFC; |
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break; |
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case UAC3_CH_TOP_FRONT_LOC: |
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map = SNDRV_CHMAP_TFLC; |
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break; |
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case UAC3_CH_TOP_FRONT_ROC: |
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map = SNDRV_CHMAP_TFRC; |
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break; |
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case UAC3_CH_TOP_SIDE_LEFT: |
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map = SNDRV_CHMAP_TSL; |
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break; |
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case UAC3_CH_TOP_SIDE_RIGHT: |
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map = SNDRV_CHMAP_TSR; |
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break; |
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case UAC3_CH_TOP_BACK_LEFT: |
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map = SNDRV_CHMAP_TRL; |
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break; |
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case UAC3_CH_TOP_BACK_RIGHT: |
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map = SNDRV_CHMAP_TRR; |
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break; |
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case UAC3_CH_TOP_BACK_CENTER: |
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map = SNDRV_CHMAP_TRC; |
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break; |
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case UAC3_CH_BOTTOM_CENTER: |
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map = SNDRV_CHMAP_BC; |
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break; |
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case UAC3_CH_LOW_FREQUENCY_EFFECTS: |
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map = SNDRV_CHMAP_LFE; |
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break; |
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case UAC3_CH_LFE_LEFT: |
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map = SNDRV_CHMAP_LLFE; |
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break; |
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case UAC3_CH_LFE_RIGHT: |
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map = SNDRV_CHMAP_RLFE; |
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break; |
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case UAC3_CH_RELATIONSHIP_UNDEFINED: |
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default: |
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map = SNDRV_CHMAP_UNKNOWN; |
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break; |
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} |
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chmap->map[c++] = map; |
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} |
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p += cs_len; |
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} |
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|
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if (channels < c) |
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pr_err("%s: channel number mismatch\n", __func__); |
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|
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chmap->channels = channels; |
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|
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for (; c < channels; c++) |
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chmap->map[c] = SNDRV_CHMAP_UNKNOWN; |
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|
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return chmap; |
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} |
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|
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/* |
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* add this endpoint to the chip instance. |
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* if a stream with the same endpoint already exists, append to it. |
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* if not, create a new pcm stream. note, fp is added to the substream |
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* fmt_list and will be freed on the chip instance release. do not free |
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* fp or do remove it from the substream fmt_list to avoid double-free. |
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*/ |
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static int __snd_usb_add_audio_stream(struct snd_usb_audio *chip, |
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int stream, |
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struct audioformat *fp, |
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struct snd_usb_power_domain *pd) |
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|
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{ |
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struct snd_usb_stream *as; |
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struct snd_usb_substream *subs; |
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struct snd_pcm *pcm; |
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int err; |
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|
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list_for_each_entry(as, &chip->pcm_list, list) { |
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if (as->fmt_type != fp->fmt_type) |
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continue; |
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subs = &as->substream[stream]; |
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if (subs->ep_num == fp->endpoint) { |
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list_add_tail(&fp->list, &subs->fmt_list); |
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subs->num_formats++; |
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subs->formats |= fp->formats; |
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return 0; |
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} |
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} |
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/* look for an empty stream */ |
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list_for_each_entry(as, &chip->pcm_list, list) { |
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if (as->fmt_type != fp->fmt_type) |
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continue; |
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subs = &as->substream[stream]; |
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if (subs->ep_num) |
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continue; |
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if (snd_device_get_state(chip->card, as->pcm) != |
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SNDRV_DEV_BUILD) |
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chip->need_delayed_register = true; |
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err = snd_pcm_new_stream(as->pcm, stream, 1); |
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if (err < 0) |
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return err; |
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snd_usb_init_substream(as, stream, fp, pd); |
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return add_chmap(as->pcm, stream, subs); |
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} |
|
|
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/* create a new pcm */ |
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as = kzalloc(sizeof(*as), GFP_KERNEL); |
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if (!as) |
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return -ENOMEM; |
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as->pcm_index = chip->pcm_devs; |
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as->chip = chip; |
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as->fmt_type = fp->fmt_type; |
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err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, |
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stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, |
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stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, |
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&pcm); |
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if (err < 0) { |
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kfree(as); |
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return err; |
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} |
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as->pcm = pcm; |
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pcm->private_data = as; |
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pcm->private_free = snd_usb_audio_pcm_free; |
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pcm->info_flags = 0; |
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if (chip->pcm_devs > 0) |
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sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); |
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else |
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strcpy(pcm->name, "USB Audio"); |
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|
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snd_usb_init_substream(as, stream, fp, pd); |
|
|
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/* |
|
* Keep using head insertion for M-Audio Audiophile USB (tm) which has a |
|
* fix to swap capture stream order in conf/cards/USB-audio.conf |
|
*/ |
|
if (chip->usb_id == USB_ID(0x0763, 0x2003)) |
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list_add(&as->list, &chip->pcm_list); |
|
else |
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list_add_tail(&as->list, &chip->pcm_list); |
|
|
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chip->pcm_devs++; |
|
|
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snd_usb_proc_pcm_format_add(as); |
|
|
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return add_chmap(pcm, stream, &as->substream[stream]); |
|
} |
|
|
|
int snd_usb_add_audio_stream(struct snd_usb_audio *chip, |
|
int stream, |
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struct audioformat *fp) |
|
{ |
|
return __snd_usb_add_audio_stream(chip, stream, fp, NULL); |
|
} |
|
|
|
static int snd_usb_add_audio_stream_v3(struct snd_usb_audio *chip, |
|
int stream, |
|
struct audioformat *fp, |
|
struct snd_usb_power_domain *pd) |
|
{ |
|
return __snd_usb_add_audio_stream(chip, stream, fp, pd); |
|
} |
|
|
|
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 we can't locate the USB_DT_CS_ENDPOINT descriptor in the extra |
|
* bytes after the first endpoint, go search the entire interface. |
|
* Some devices have it directly *before* the standard endpoint. |
|
*/ |
|
if (!csep) |
|
csep = snd_usb_find_desc(alts->extra, alts->extralen, NULL, USB_DT_CS_ENDPOINT); |
|
|
|
if (!csep || csep->bLength < 7 || |
|
csep->bDescriptorSubtype != UAC_EP_GENERAL) |
|
goto error; |
|
|
|
if (protocol == UAC_VERSION_1) { |
|
attributes = csep->bmAttributes; |
|
} else if (protocol == UAC_VERSION_2) { |
|
struct uac2_iso_endpoint_descriptor *csep2 = |
|
(struct uac2_iso_endpoint_descriptor *) csep; |
|
|
|
if (csep2->bLength < sizeof(*csep2)) |
|
goto error; |
|
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; |
|
} else { /* UAC_VERSION_3 */ |
|
struct uac3_iso_endpoint_descriptor *csep3 = |
|
(struct uac3_iso_endpoint_descriptor *) csep; |
|
|
|
if (csep3->bLength < sizeof(*csep3)) |
|
goto error; |
|
/* emulate the endpoint attributes of a v1 device */ |
|
if (le32_to_cpu(csep3->bmControls) & UAC2_CONTROL_PITCH) |
|
attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL; |
|
} |
|
|
|
return attributes; |
|
|
|
error: |
|
usb_audio_warn(chip, |
|
"%u:%d : no or invalid class specific endpoint descriptor\n", |
|
iface_no, altsd->bAlternateSetting); |
|
return 0; |
|
} |
|
|
|
/* find an input terminal descriptor (either UAC1 or UAC2) with the given |
|
* terminal id |
|
*/ |
|
static void * |
|
snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface, |
|
int terminal_id, int protocol) |
|
{ |
|
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 (!snd_usb_validate_audio_desc(term, protocol)) |
|
continue; |
|
if (term->bTerminalID == terminal_id) |
|
return term; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static void * |
|
snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface, |
|
int terminal_id, int protocol) |
|
{ |
|
/* OK to use with both UAC2 and UAC3 */ |
|
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 (!snd_usb_validate_audio_desc(term, protocol)) |
|
continue; |
|
if (term->bTerminalID == terminal_id) |
|
return term; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static struct audioformat * |
|
audio_format_alloc_init(struct snd_usb_audio *chip, |
|
struct usb_host_interface *alts, |
|
int protocol, int iface_no, int altset_idx, |
|
int altno, int num_channels, int clock) |
|
{ |
|
struct audioformat *fp; |
|
|
|
fp = kzalloc(sizeof(*fp), GFP_KERNEL); |
|
if (!fp) |
|
return NULL; |
|
|
|
fp->iface = iface_no; |
|
fp->altsetting = altno; |
|
fp->altset_idx = altset_idx; |
|
fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; |
|
fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; |
|
fp->datainterval = snd_usb_parse_datainterval(chip, alts); |
|
fp->protocol = protocol; |
|
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
|
fp->channels = num_channels; |
|
if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH) |
|
fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) |
|
* (fp->maxpacksize & 0x7ff); |
|
fp->clock = clock; |
|
INIT_LIST_HEAD(&fp->list); |
|
|
|
return fp; |
|
} |
|
|
|
static struct audioformat * |
|
snd_usb_get_audioformat_uac12(struct snd_usb_audio *chip, |
|
struct usb_host_interface *alts, |
|
int protocol, int iface_no, int altset_idx, |
|
int altno, int stream, int bm_quirk) |
|
{ |
|
struct usb_device *dev = chip->dev; |
|
struct uac_format_type_i_continuous_descriptor *fmt; |
|
unsigned int num_channels = 0, chconfig = 0; |
|
struct audioformat *fp; |
|
int clock = 0; |
|
u64 format; |
|
|
|
/* get audio formats */ |
|
if (protocol == UAC_VERSION_1) { |
|
struct uac1_as_header_descriptor *as = |
|
snd_usb_find_csint_desc(alts->extra, alts->extralen, |
|
NULL, UAC_AS_GENERAL); |
|
struct uac_input_terminal_descriptor *iterm; |
|
|
|
if (!as) { |
|
dev_err(&dev->dev, |
|
"%u:%d : UAC_AS_GENERAL descriptor not found\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
if (as->bLength < sizeof(*as)) { |
|
dev_err(&dev->dev, |
|
"%u:%d : invalid UAC_AS_GENERAL desc\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
format = le16_to_cpu(as->wFormatTag); /* remember the format value */ |
|
|
|
iterm = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, |
|
as->bTerminalLink, |
|
protocol); |
|
if (iterm) { |
|
num_channels = iterm->bNrChannels; |
|
chconfig = le16_to_cpu(iterm->wChannelConfig); |
|
} |
|
} else { /* 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) { |
|
dev_err(&dev->dev, |
|
"%u:%d : UAC_AS_GENERAL descriptor not found\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
if (as->bLength < sizeof(*as)) { |
|
dev_err(&dev->dev, |
|
"%u:%d : invalid UAC_AS_GENERAL desc\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
num_channels = as->bNrChannels; |
|
format = le32_to_cpu(as->bmFormats); |
|
chconfig = le32_to_cpu(as->bmChannelConfig); |
|
|
|
/* |
|
* lookup the terminal associated to this interface |
|
* to extract the clock |
|
*/ |
|
input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, |
|
as->bTerminalLink, |
|
protocol); |
|
if (input_term) { |
|
clock = input_term->bCSourceID; |
|
if (!chconfig && (num_channels == input_term->bNrChannels)) |
|
chconfig = le32_to_cpu(input_term->bmChannelConfig); |
|
goto found_clock; |
|
} |
|
|
|
output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf, |
|
as->bTerminalLink, |
|
protocol); |
|
if (output_term) { |
|
clock = output_term->bCSourceID; |
|
goto found_clock; |
|
} |
|
|
|
dev_err(&dev->dev, |
|
"%u:%d : bogus bTerminalLink %d\n", |
|
iface_no, altno, as->bTerminalLink); |
|
return NULL; |
|
} |
|
|
|
found_clock: |
|
/* get format type */ |
|
fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, |
|
NULL, UAC_FORMAT_TYPE); |
|
if (!fmt) { |
|
dev_err(&dev->dev, |
|
"%u:%d : no UAC_FORMAT_TYPE desc\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) |
|
|| ((protocol == UAC_VERSION_2) && |
|
(fmt->bLength < 6))) { |
|
dev_err(&dev->dev, |
|
"%u:%d : invalid UAC_FORMAT_TYPE desc\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
/* |
|
* 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. |
|
* |
|
* Part 2: analyze quirk flag and format |
|
*/ |
|
if (bm_quirk && fmt->bNrChannels == 1 && fmt->bSubframeSize == 2) |
|
return NULL; |
|
|
|
fp = audio_format_alloc_init(chip, alts, protocol, iface_no, |
|
altset_idx, altno, num_channels, clock); |
|
if (!fp) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, |
|
iface_no); |
|
|
|
/* some quirks for attributes here */ |
|
snd_usb_audioformat_attributes_quirk(chip, fp, stream); |
|
|
|
/* ok, let's parse further... */ |
|
if (snd_usb_parse_audio_format(chip, fp, format, |
|
fmt, stream) < 0) { |
|
audioformat_free(fp); |
|
return NULL; |
|
} |
|
|
|
/* Create chmap */ |
|
if (fp->channels != num_channels) |
|
chconfig = 0; |
|
|
|
fp->chmap = convert_chmap(fp->channels, chconfig, protocol); |
|
|
|
return fp; |
|
} |
|
|
|
static struct audioformat * |
|
snd_usb_get_audioformat_uac3(struct snd_usb_audio *chip, |
|
struct usb_host_interface *alts, |
|
struct snd_usb_power_domain **pd_out, |
|
int iface_no, int altset_idx, |
|
int altno, int stream) |
|
{ |
|
struct usb_device *dev = chip->dev; |
|
struct uac3_input_terminal_descriptor *input_term; |
|
struct uac3_output_terminal_descriptor *output_term; |
|
struct uac3_cluster_header_descriptor *cluster; |
|
struct uac3_as_header_descriptor *as = NULL; |
|
struct uac3_hc_descriptor_header hc_header; |
|
struct snd_pcm_chmap_elem *chmap; |
|
struct snd_usb_power_domain *pd; |
|
unsigned char badd_profile; |
|
u64 badd_formats = 0; |
|
unsigned int num_channels; |
|
struct audioformat *fp; |
|
u16 cluster_id, wLength; |
|
int clock = 0; |
|
int err; |
|
|
|
badd_profile = chip->badd_profile; |
|
|
|
if (badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { |
|
unsigned int maxpacksize = |
|
le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
|
|
|
switch (maxpacksize) { |
|
default: |
|
dev_err(&dev->dev, |
|
"%u:%d : incorrect wMaxPacketSize for BADD profile\n", |
|
iface_no, altno); |
|
return NULL; |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_16: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_16: |
|
badd_formats = SNDRV_PCM_FMTBIT_S16_LE; |
|
num_channels = 1; |
|
break; |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_24: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_24: |
|
badd_formats = SNDRV_PCM_FMTBIT_S24_3LE; |
|
num_channels = 1; |
|
break; |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_16: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_16: |
|
badd_formats = SNDRV_PCM_FMTBIT_S16_LE; |
|
num_channels = 2; |
|
break; |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_24: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_24: |
|
badd_formats = SNDRV_PCM_FMTBIT_S24_3LE; |
|
num_channels = 2; |
|
break; |
|
} |
|
|
|
chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); |
|
if (!chmap) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
if (num_channels == 1) { |
|
chmap->map[0] = SNDRV_CHMAP_MONO; |
|
} else { |
|
chmap->map[0] = SNDRV_CHMAP_FL; |
|
chmap->map[1] = SNDRV_CHMAP_FR; |
|
} |
|
|
|
chmap->channels = num_channels; |
|
clock = UAC3_BADD_CS_ID9; |
|
goto found_clock; |
|
} |
|
|
|
as = snd_usb_find_csint_desc(alts->extra, alts->extralen, |
|
NULL, UAC_AS_GENERAL); |
|
if (!as) { |
|
dev_err(&dev->dev, |
|
"%u:%d : UAC_AS_GENERAL descriptor not found\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
if (as->bLength < sizeof(*as)) { |
|
dev_err(&dev->dev, |
|
"%u:%d : invalid UAC_AS_GENERAL desc\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
cluster_id = le16_to_cpu(as->wClusterDescrID); |
|
if (!cluster_id) { |
|
dev_err(&dev->dev, |
|
"%u:%d : no cluster descriptor\n", |
|
iface_no, altno); |
|
return NULL; |
|
} |
|
|
|
/* |
|
* Get number of channels and channel map through |
|
* High Capability Cluster Descriptor |
|
* |
|
* First step: get High Capability header and |
|
* read size of Cluster Descriptor |
|
*/ |
|
err = snd_usb_ctl_msg(chip->dev, |
|
usb_rcvctrlpipe(chip->dev, 0), |
|
UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, |
|
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
|
cluster_id, |
|
snd_usb_ctrl_intf(chip), |
|
&hc_header, sizeof(hc_header)); |
|
if (err < 0) |
|
return ERR_PTR(err); |
|
else if (err != sizeof(hc_header)) { |
|
dev_err(&dev->dev, |
|
"%u:%d : can't get High Capability descriptor\n", |
|
iface_no, altno); |
|
return ERR_PTR(-EIO); |
|
} |
|
|
|
/* |
|
* Second step: allocate needed amount of memory |
|
* and request Cluster Descriptor |
|
*/ |
|
wLength = le16_to_cpu(hc_header.wLength); |
|
cluster = kzalloc(wLength, GFP_KERNEL); |
|
if (!cluster) |
|
return ERR_PTR(-ENOMEM); |
|
err = snd_usb_ctl_msg(chip->dev, |
|
usb_rcvctrlpipe(chip->dev, 0), |
|
UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, |
|
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
|
cluster_id, |
|
snd_usb_ctrl_intf(chip), |
|
cluster, wLength); |
|
if (err < 0) { |
|
kfree(cluster); |
|
return ERR_PTR(err); |
|
} else if (err != wLength) { |
|
dev_err(&dev->dev, |
|
"%u:%d : can't get Cluster Descriptor\n", |
|
iface_no, altno); |
|
kfree(cluster); |
|
return ERR_PTR(-EIO); |
|
} |
|
|
|
num_channels = cluster->bNrChannels; |
|
chmap = convert_chmap_v3(cluster); |
|
kfree(cluster); |
|
|
|
/* |
|
* lookup the terminal associated to this interface |
|
* to extract the clock |
|
*/ |
|
input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, |
|
as->bTerminalLink, |
|
UAC_VERSION_3); |
|
if (input_term) { |
|
clock = input_term->bCSourceID; |
|
goto found_clock; |
|
} |
|
|
|
output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf, |
|
as->bTerminalLink, |
|
UAC_VERSION_3); |
|
if (output_term) { |
|
clock = output_term->bCSourceID; |
|
goto found_clock; |
|
} |
|
|
|
dev_err(&dev->dev, "%u:%d : bogus bTerminalLink %d\n", |
|
iface_no, altno, as->bTerminalLink); |
|
kfree(chmap); |
|
return NULL; |
|
|
|
found_clock: |
|
fp = audio_format_alloc_init(chip, alts, UAC_VERSION_3, iface_no, |
|
altset_idx, altno, num_channels, clock); |
|
if (!fp) { |
|
kfree(chmap); |
|
return ERR_PTR(-ENOMEM); |
|
} |
|
|
|
fp->chmap = chmap; |
|
|
|
if (badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { |
|
fp->attributes = 0; /* No attributes */ |
|
|
|
fp->fmt_type = UAC_FORMAT_TYPE_I; |
|
fp->formats = badd_formats; |
|
|
|
fp->nr_rates = 0; /* SNDRV_PCM_RATE_CONTINUOUS */ |
|
fp->rate_min = UAC3_BADD_SAMPLING_RATE; |
|
fp->rate_max = UAC3_BADD_SAMPLING_RATE; |
|
fp->rates = SNDRV_PCM_RATE_CONTINUOUS; |
|
|
|
pd = kzalloc(sizeof(*pd), GFP_KERNEL); |
|
if (!pd) { |
|
audioformat_free(fp); |
|
return NULL; |
|
} |
|
pd->pd_id = (stream == SNDRV_PCM_STREAM_PLAYBACK) ? |
|
UAC3_BADD_PD_ID10 : UAC3_BADD_PD_ID11; |
|
pd->pd_d1d0_rec = UAC3_BADD_PD_RECOVER_D1D0; |
|
pd->pd_d2d0_rec = UAC3_BADD_PD_RECOVER_D2D0; |
|
|
|
} else { |
|
fp->attributes = parse_uac_endpoint_attributes(chip, alts, |
|
UAC_VERSION_3, |
|
iface_no); |
|
|
|
pd = snd_usb_find_power_domain(chip->ctrl_intf, |
|
as->bTerminalLink); |
|
|
|
/* ok, let's parse further... */ |
|
if (snd_usb_parse_audio_format_v3(chip, fp, as, stream) < 0) { |
|
kfree(pd); |
|
audioformat_free(fp); |
|
return NULL; |
|
} |
|
} |
|
|
|
if (pd) |
|
*pd_out = pd; |
|
|
|
return fp; |
|
} |
|
|
|
static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip, |
|
int iface_no, |
|
bool *has_non_pcm, bool non_pcm) |
|
{ |
|
struct usb_device *dev; |
|
struct usb_interface *iface; |
|
struct usb_host_interface *alts; |
|
struct usb_interface_descriptor *altsd; |
|
int i, altno, err, stream; |
|
struct audioformat *fp = NULL; |
|
struct snd_usb_power_domain *pd = NULL; |
|
int num, protocol; |
|
|
|
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->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && |
|
altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC)) && |
|
altsd->bInterfaceClass != USB_CLASS_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; |
|
|
|
/* |
|
* Roland audio streaming interfaces are marked with protocols |
|
* 0/1/2, but are UAC 1 compatible. |
|
*/ |
|
if (USB_ID_VENDOR(chip->usb_id) == 0x0582 && |
|
altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
|
protocol <= 2) |
|
protocol = UAC_VERSION_1; |
|
|
|
switch (protocol) { |
|
default: |
|
dev_dbg(&dev->dev, "%u:%d: unknown interface protocol %#02x, assuming v1\n", |
|
iface_no, altno, protocol); |
|
protocol = UAC_VERSION_1; |
|
fallthrough; |
|
case UAC_VERSION_1: |
|
case UAC_VERSION_2: { |
|
int bm_quirk = 0; |
|
|
|
/* |
|
* 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. |
|
* |
|
* Part 1: prepare quirk flag |
|
*/ |
|
if (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) |
|
bm_quirk = 1; |
|
|
|
fp = snd_usb_get_audioformat_uac12(chip, alts, protocol, |
|
iface_no, i, altno, |
|
stream, bm_quirk); |
|
break; |
|
} |
|
case UAC_VERSION_3: |
|
fp = snd_usb_get_audioformat_uac3(chip, alts, &pd, |
|
iface_no, i, altno, stream); |
|
break; |
|
} |
|
|
|
if (!fp) |
|
continue; |
|
else if (IS_ERR(fp)) |
|
return PTR_ERR(fp); |
|
|
|
if (fp->fmt_type != UAC_FORMAT_TYPE_I) |
|
*has_non_pcm = true; |
|
if ((fp->fmt_type == UAC_FORMAT_TYPE_I) == non_pcm) { |
|
audioformat_free(fp); |
|
kfree(pd); |
|
fp = NULL; |
|
pd = NULL; |
|
continue; |
|
} |
|
|
|
snd_usb_audioformat_set_sync_ep(chip, fp); |
|
|
|
dev_dbg(&dev->dev, "%u:%d: add audio endpoint %#x\n", iface_no, altno, fp->endpoint); |
|
if (protocol == UAC_VERSION_3) |
|
err = snd_usb_add_audio_stream_v3(chip, stream, fp, pd); |
|
else |
|
err = snd_usb_add_audio_stream(chip, stream, fp); |
|
|
|
if (err < 0) { |
|
audioformat_free(fp); |
|
kfree(pd); |
|
return err; |
|
} |
|
|
|
/* add endpoints */ |
|
err = snd_usb_add_endpoint(chip, fp->endpoint, |
|
SND_USB_ENDPOINT_TYPE_DATA); |
|
if (err < 0) |
|
return err; |
|
|
|
if (fp->sync_ep) { |
|
err = snd_usb_add_endpoint(chip, fp->sync_ep, |
|
fp->implicit_fb ? |
|
SND_USB_ENDPOINT_TYPE_DATA : |
|
SND_USB_ENDPOINT_TYPE_SYNC); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
/* try to set the interface... */ |
|
usb_set_interface(chip->dev, iface_no, 0); |
|
snd_usb_init_pitch(chip, fp); |
|
snd_usb_init_sample_rate(chip, fp, fp->rate_max); |
|
usb_set_interface(chip->dev, iface_no, altno); |
|
} |
|
return 0; |
|
} |
|
|
|
int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) |
|
{ |
|
int err; |
|
bool has_non_pcm = false; |
|
|
|
/* parse PCM formats */ |
|
err = __snd_usb_parse_audio_interface(chip, iface_no, &has_non_pcm, false); |
|
if (err < 0) |
|
return err; |
|
|
|
if (has_non_pcm) { |
|
/* parse non-PCM formats */ |
|
err = __snd_usb_parse_audio_interface(chip, iface_no, &has_non_pcm, true); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|