b1d5776d86
- Remove vmalloc wrapper - Add release_and_free_resource() to remove kfree_nocheck() from each driver and simplify the code Signed-off-by: Takashi Iwai <tiwai@suse.de>
3399 lines
95 KiB
C
3399 lines
95 KiB
C
/*
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* (Tentative) USB Audio Driver for ALSA
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*
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* Main and PCM part
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*
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* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
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*
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* Many codes borrowed from audio.c by
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* Alan Cox (alan@lxorguk.ukuu.org.uk)
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* Thomas Sailer (sailer@ife.ee.ethz.ch)
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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* NOTES:
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*
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* - async unlink should be used for avoiding the sleep inside lock.
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* 2.4.22 usb-uhci seems buggy for async unlinking and results in
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* oops. in such a cse, pass async_unlink=0 option.
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* - the linked URBs would be preferred but not used so far because of
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* the instability of unlinking.
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* - type II is not supported properly. there is no device which supports
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* this type *correctly*. SB extigy looks as if it supports, but it's
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* indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
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*/
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#include <sound/driver.h>
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#include <linux/bitops.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/usb.h>
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#include <linux/vmalloc.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/info.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include "usbaudio.h"
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MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
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MODULE_DESCRIPTION("USB Audio");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
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static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */
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static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */
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static int nrpacks = 4; /* max. number of packets per urb */
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static int async_unlink = 1;
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for the USB audio adapter.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable USB audio adapter.");
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module_param_array(vid, int, NULL, 0444);
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MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
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module_param_array(pid, int, NULL, 0444);
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MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
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module_param(nrpacks, int, 0644);
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MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB.");
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module_param(async_unlink, bool, 0444);
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MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
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/*
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* debug the h/w constraints
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*/
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/* #define HW_CONST_DEBUG */
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/*
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*
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*/
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#define MAX_PACKS 10
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#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
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#define MAX_URBS 8
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#define SYNC_URBS 4 /* always four urbs for sync */
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#define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
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typedef struct snd_usb_substream snd_usb_substream_t;
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typedef struct snd_usb_stream snd_usb_stream_t;
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typedef struct snd_urb_ctx snd_urb_ctx_t;
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struct audioformat {
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struct list_head list;
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snd_pcm_format_t format; /* format type */
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unsigned int channels; /* # channels */
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unsigned int fmt_type; /* USB audio format type (1-3) */
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unsigned int frame_size; /* samples per frame for non-audio */
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int iface; /* interface number */
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unsigned char altsetting; /* corresponding alternate setting */
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unsigned char altset_idx; /* array index of altenate setting */
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unsigned char attributes; /* corresponding attributes of cs endpoint */
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unsigned char endpoint; /* endpoint */
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unsigned char ep_attr; /* endpoint attributes */
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unsigned int maxpacksize; /* max. packet size */
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unsigned int rates; /* rate bitmasks */
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unsigned int rate_min, rate_max; /* min/max rates */
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unsigned int nr_rates; /* number of rate table entries */
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unsigned int *rate_table; /* rate table */
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};
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struct snd_urb_ctx {
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struct urb *urb;
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unsigned int buffer_size; /* size of data buffer, if data URB */
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snd_usb_substream_t *subs;
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int index; /* index for urb array */
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int packets; /* number of packets per urb */
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};
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struct snd_urb_ops {
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int (*prepare)(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime, struct urb *u);
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int (*retire)(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime, struct urb *u);
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int (*prepare_sync)(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime, struct urb *u);
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int (*retire_sync)(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime, struct urb *u);
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};
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struct snd_usb_substream {
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snd_usb_stream_t *stream;
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struct usb_device *dev;
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snd_pcm_substream_t *pcm_substream;
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int direction; /* playback or capture */
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int interface; /* current interface */
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int endpoint; /* assigned endpoint */
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struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */
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unsigned int cur_rate; /* current rate (for hw_params callback) */
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unsigned int period_bytes; /* current period bytes (for hw_params callback) */
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unsigned int format; /* USB data format */
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unsigned int datapipe; /* the data i/o pipe */
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unsigned int syncpipe; /* 1 - async out or adaptive in */
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unsigned int datainterval; /* log_2 of data packet interval */
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unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
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unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
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unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
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unsigned int freqmax; /* maximum sampling rate, used for buffer management */
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unsigned int phase; /* phase accumulator */
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unsigned int maxpacksize; /* max packet size in bytes */
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unsigned int maxframesize; /* max packet size in frames */
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unsigned int curpacksize; /* current packet size in bytes (for capture) */
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unsigned int curframesize; /* current packet size in frames (for capture) */
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unsigned int fill_max: 1; /* fill max packet size always */
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unsigned int fmt_type; /* USB audio format type (1-3) */
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unsigned int packs_per_ms; /* packets per millisecond (for playback) */
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unsigned int running: 1; /* running status */
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unsigned int hwptr_done; /* processed frame position in the buffer */
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unsigned int transfer_done; /* processed frames since last period update */
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unsigned long active_mask; /* bitmask of active urbs */
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unsigned long unlink_mask; /* bitmask of unlinked urbs */
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unsigned int nurbs; /* # urbs */
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snd_urb_ctx_t dataurb[MAX_URBS]; /* data urb table */
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snd_urb_ctx_t syncurb[SYNC_URBS]; /* sync urb table */
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char *syncbuf; /* sync buffer for all sync URBs */
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dma_addr_t sync_dma; /* DMA address of syncbuf */
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u64 formats; /* format bitmasks (all or'ed) */
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unsigned int num_formats; /* number of supported audio formats (list) */
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struct list_head fmt_list; /* format list */
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spinlock_t lock;
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struct tasklet_struct start_period_elapsed; /* for start trigger */
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struct snd_urb_ops ops; /* callbacks (must be filled at init) */
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};
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struct snd_usb_stream {
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snd_usb_audio_t *chip;
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snd_pcm_t *pcm;
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int pcm_index;
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unsigned int fmt_type; /* USB audio format type (1-3) */
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snd_usb_substream_t substream[2];
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struct list_head list;
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};
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/*
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* we keep the snd_usb_audio_t instances by ourselves for merging
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* the all interfaces on the same card as one sound device.
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*/
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static DECLARE_MUTEX(register_mutex);
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static snd_usb_audio_t *usb_chip[SNDRV_CARDS];
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/*
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* convert a sampling rate into our full speed format (fs/1000 in Q16.16)
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* this will overflow at approx 524 kHz
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*/
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static inline unsigned get_usb_full_speed_rate(unsigned int rate)
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{
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return ((rate << 13) + 62) / 125;
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}
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/*
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* convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
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* this will overflow at approx 4 MHz
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*/
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static inline unsigned get_usb_high_speed_rate(unsigned int rate)
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{
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return ((rate << 10) + 62) / 125;
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}
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/* convert our full speed USB rate into sampling rate in Hz */
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static inline unsigned get_full_speed_hz(unsigned int usb_rate)
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{
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return (usb_rate * 125 + (1 << 12)) >> 13;
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}
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/* convert our high speed USB rate into sampling rate in Hz */
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static inline unsigned get_high_speed_hz(unsigned int usb_rate)
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{
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return (usb_rate * 125 + (1 << 9)) >> 10;
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}
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/*
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* prepare urb for full speed capture sync pipe
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*
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* fill the length and offset of each urb descriptor.
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* the fixed 10.14 frequency is passed through the pipe.
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*/
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static int prepare_capture_sync_urb(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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unsigned char *cp = urb->transfer_buffer;
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snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
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urb->dev = ctx->subs->dev; /* we need to set this at each time */
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urb->iso_frame_desc[0].length = 3;
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urb->iso_frame_desc[0].offset = 0;
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cp[0] = subs->freqn >> 2;
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cp[1] = subs->freqn >> 10;
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cp[2] = subs->freqn >> 18;
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return 0;
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}
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/*
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* prepare urb for high speed capture sync pipe
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*
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* fill the length and offset of each urb descriptor.
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* the fixed 12.13 frequency is passed as 16.16 through the pipe.
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*/
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static int prepare_capture_sync_urb_hs(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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unsigned char *cp = urb->transfer_buffer;
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snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
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urb->dev = ctx->subs->dev; /* we need to set this at each time */
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urb->iso_frame_desc[0].length = 4;
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urb->iso_frame_desc[0].offset = 0;
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cp[0] = subs->freqn;
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cp[1] = subs->freqn >> 8;
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cp[2] = subs->freqn >> 16;
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cp[3] = subs->freqn >> 24;
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return 0;
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}
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/*
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* process after capture sync complete
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* - nothing to do
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*/
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static int retire_capture_sync_urb(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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return 0;
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}
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/*
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* prepare urb for capture data pipe
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*
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* fill the offset and length of each descriptor.
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*
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* we use a temporary buffer to write the captured data.
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* since the length of written data is determined by host, we cannot
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* write onto the pcm buffer directly... the data is thus copied
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* later at complete callback to the global buffer.
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*/
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static int prepare_capture_urb(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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int i, offs;
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snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
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offs = 0;
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urb->dev = ctx->subs->dev; /* we need to set this at each time */
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for (i = 0; i < ctx->packets; i++) {
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urb->iso_frame_desc[i].offset = offs;
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urb->iso_frame_desc[i].length = subs->curpacksize;
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offs += subs->curpacksize;
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}
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urb->transfer_buffer_length = offs;
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urb->number_of_packets = ctx->packets;
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#if 0 // for check
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if (! urb->bandwidth) {
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int bustime;
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bustime = usb_check_bandwidth(urb->dev, urb);
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if (bustime < 0)
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return bustime;
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printk("urb %d: bandwidth = %d (packets = %d)\n", ctx->index, bustime, urb->number_of_packets);
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usb_claim_bandwidth(urb->dev, urb, bustime, 1);
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}
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#endif // for check
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return 0;
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}
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/*
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* process after capture complete
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*
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* copy the data from each desctiptor to the pcm buffer, and
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* update the current position.
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*/
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static int retire_capture_urb(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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unsigned long flags;
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unsigned char *cp;
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int i;
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unsigned int stride, len, oldptr;
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int period_elapsed = 0;
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stride = runtime->frame_bits >> 3;
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for (i = 0; i < urb->number_of_packets; i++) {
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cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
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if (urb->iso_frame_desc[i].status) {
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snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
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// continue;
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}
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len = urb->iso_frame_desc[i].actual_length / stride;
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if (! len)
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continue;
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/* update the current pointer */
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spin_lock_irqsave(&subs->lock, flags);
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oldptr = subs->hwptr_done;
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subs->hwptr_done += len;
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if (subs->hwptr_done >= runtime->buffer_size)
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subs->hwptr_done -= runtime->buffer_size;
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subs->transfer_done += len;
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if (subs->transfer_done >= runtime->period_size) {
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subs->transfer_done -= runtime->period_size;
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period_elapsed = 1;
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}
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spin_unlock_irqrestore(&subs->lock, flags);
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/* copy a data chunk */
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if (oldptr + len > runtime->buffer_size) {
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unsigned int cnt = runtime->buffer_size - oldptr;
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unsigned int blen = cnt * stride;
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memcpy(runtime->dma_area + oldptr * stride, cp, blen);
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memcpy(runtime->dma_area, cp + blen, len * stride - blen);
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} else {
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memcpy(runtime->dma_area + oldptr * stride, cp, len * stride);
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}
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}
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if (period_elapsed)
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snd_pcm_period_elapsed(subs->pcm_substream);
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return 0;
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}
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/*
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* prepare urb for full speed playback sync pipe
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*
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* set up the offset and length to receive the current frequency.
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*/
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static int prepare_playback_sync_urb(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
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urb->dev = ctx->subs->dev; /* we need to set this at each time */
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urb->iso_frame_desc[0].length = 3;
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urb->iso_frame_desc[0].offset = 0;
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return 0;
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}
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/*
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* prepare urb for high speed playback sync pipe
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*
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* set up the offset and length to receive the current frequency.
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*/
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static int prepare_playback_sync_urb_hs(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
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urb->dev = ctx->subs->dev; /* we need to set this at each time */
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urb->iso_frame_desc[0].length = 4;
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urb->iso_frame_desc[0].offset = 0;
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return 0;
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}
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/*
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* process after full speed playback sync complete
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*
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* retrieve the current 10.14 frequency from pipe, and set it.
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* the value is referred in prepare_playback_urb().
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*/
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static int retire_playback_sync_urb(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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unsigned int f;
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unsigned long flags;
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if (urb->iso_frame_desc[0].status == 0 &&
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urb->iso_frame_desc[0].actual_length == 3) {
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f = combine_triple((u8*)urb->transfer_buffer) << 2;
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if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
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spin_lock_irqsave(&subs->lock, flags);
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subs->freqm = f;
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spin_unlock_irqrestore(&subs->lock, flags);
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}
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}
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return 0;
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}
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|
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/*
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* process after high speed playback sync complete
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*
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* retrieve the current 12.13 frequency from pipe, and set it.
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* the value is referred in prepare_playback_urb().
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*/
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static int retire_playback_sync_urb_hs(snd_usb_substream_t *subs,
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snd_pcm_runtime_t *runtime,
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struct urb *urb)
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{
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unsigned int f;
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unsigned long flags;
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if (urb->iso_frame_desc[0].status == 0 &&
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urb->iso_frame_desc[0].actual_length == 4) {
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f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
|
|
if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
|
|
spin_lock_irqsave(&subs->lock, flags);
|
|
subs->freqm = f;
|
|
spin_unlock_irqrestore(&subs->lock, flags);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* prepare urb for playback data pipe
|
|
*
|
|
* Since a URB can handle only a single linear buffer, we must use double
|
|
* buffering when the data to be transferred overflows the buffer boundary.
|
|
* To avoid inconsistencies when updating hwptr_done, we use double buffering
|
|
* for all URBs.
|
|
*/
|
|
static int prepare_playback_urb(snd_usb_substream_t *subs,
|
|
snd_pcm_runtime_t *runtime,
|
|
struct urb *urb)
|
|
{
|
|
int i, stride, offs;
|
|
unsigned int counts;
|
|
unsigned long flags;
|
|
int period_elapsed = 0;
|
|
snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
|
|
|
|
stride = runtime->frame_bits >> 3;
|
|
|
|
offs = 0;
|
|
urb->dev = ctx->subs->dev; /* we need to set this at each time */
|
|
urb->number_of_packets = 0;
|
|
spin_lock_irqsave(&subs->lock, flags);
|
|
for (i = 0; i < ctx->packets; i++) {
|
|
/* calculate the size of a packet */
|
|
if (subs->fill_max)
|
|
counts = subs->maxframesize; /* fixed */
|
|
else {
|
|
subs->phase = (subs->phase & 0xffff)
|
|
+ (subs->freqm << subs->datainterval);
|
|
counts = subs->phase >> 16;
|
|
if (counts > subs->maxframesize)
|
|
counts = subs->maxframesize;
|
|
}
|
|
/* set up descriptor */
|
|
urb->iso_frame_desc[i].offset = offs * stride;
|
|
urb->iso_frame_desc[i].length = counts * stride;
|
|
offs += counts;
|
|
urb->number_of_packets++;
|
|
subs->transfer_done += counts;
|
|
if (subs->transfer_done >= runtime->period_size) {
|
|
subs->transfer_done -= runtime->period_size;
|
|
period_elapsed = 1;
|
|
if (subs->fmt_type == USB_FORMAT_TYPE_II) {
|
|
if (subs->transfer_done > 0) {
|
|
/* FIXME: fill-max mode is not
|
|
* supported yet */
|
|
offs -= subs->transfer_done;
|
|
counts -= subs->transfer_done;
|
|
urb->iso_frame_desc[i].length =
|
|
counts * stride;
|
|
subs->transfer_done = 0;
|
|
}
|
|
i++;
|
|
if (i < ctx->packets) {
|
|
/* add a transfer delimiter */
|
|
urb->iso_frame_desc[i].offset =
|
|
offs * stride;
|
|
urb->iso_frame_desc[i].length = 0;
|
|
urb->number_of_packets++;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
/* finish at the frame boundary at/after the period boundary */
|
|
if (period_elapsed &&
|
|
(i & (subs->packs_per_ms - 1)) == subs->packs_per_ms - 1)
|
|
break;
|
|
}
|
|
if (subs->hwptr_done + offs > runtime->buffer_size) {
|
|
/* err, the transferred area goes over buffer boundary. */
|
|
unsigned int len = runtime->buffer_size - subs->hwptr_done;
|
|
memcpy(urb->transfer_buffer,
|
|
runtime->dma_area + subs->hwptr_done * stride,
|
|
len * stride);
|
|
memcpy(urb->transfer_buffer + len * stride,
|
|
runtime->dma_area,
|
|
(offs - len) * stride);
|
|
} else {
|
|
memcpy(urb->transfer_buffer,
|
|
runtime->dma_area + subs->hwptr_done * stride,
|
|
offs * stride);
|
|
}
|
|
subs->hwptr_done += offs;
|
|
if (subs->hwptr_done >= runtime->buffer_size)
|
|
subs->hwptr_done -= runtime->buffer_size;
|
|
spin_unlock_irqrestore(&subs->lock, flags);
|
|
urb->transfer_buffer_length = offs * stride;
|
|
if (period_elapsed) {
|
|
if (likely(subs->running))
|
|
snd_pcm_period_elapsed(subs->pcm_substream);
|
|
else
|
|
tasklet_hi_schedule(&subs->start_period_elapsed);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* process after playback data complete
|
|
* - nothing to do
|
|
*/
|
|
static int retire_playback_urb(snd_usb_substream_t *subs,
|
|
snd_pcm_runtime_t *runtime,
|
|
struct urb *urb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Delay the snd_pcm_period_elapsed() call until after the start trigger
|
|
* callback so that we're not longer in the substream's lock.
|
|
*/
|
|
static void start_period_elapsed(unsigned long data)
|
|
{
|
|
snd_usb_substream_t *subs = (snd_usb_substream_t *)data;
|
|
snd_pcm_period_elapsed(subs->pcm_substream);
|
|
}
|
|
|
|
|
|
/*
|
|
*/
|
|
static struct snd_urb_ops audio_urb_ops[2] = {
|
|
{
|
|
.prepare = prepare_playback_urb,
|
|
.retire = retire_playback_urb,
|
|
.prepare_sync = prepare_playback_sync_urb,
|
|
.retire_sync = retire_playback_sync_urb,
|
|
},
|
|
{
|
|
.prepare = prepare_capture_urb,
|
|
.retire = retire_capture_urb,
|
|
.prepare_sync = prepare_capture_sync_urb,
|
|
.retire_sync = retire_capture_sync_urb,
|
|
},
|
|
};
|
|
|
|
static struct snd_urb_ops audio_urb_ops_high_speed[2] = {
|
|
{
|
|
.prepare = prepare_playback_urb,
|
|
.retire = retire_playback_urb,
|
|
.prepare_sync = prepare_playback_sync_urb_hs,
|
|
.retire_sync = retire_playback_sync_urb_hs,
|
|
},
|
|
{
|
|
.prepare = prepare_capture_urb,
|
|
.retire = retire_capture_urb,
|
|
.prepare_sync = prepare_capture_sync_urb_hs,
|
|
.retire_sync = retire_capture_sync_urb,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* complete callback from data urb
|
|
*/
|
|
static void snd_complete_urb(struct urb *urb, struct pt_regs *regs)
|
|
{
|
|
snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
|
|
snd_usb_substream_t *subs = ctx->subs;
|
|
snd_pcm_substream_t *substream = ctx->subs->pcm_substream;
|
|
int err = 0;
|
|
|
|
if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
|
|
! subs->running || /* can be stopped during retire callback */
|
|
(err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
|
|
(err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
|
|
clear_bit(ctx->index, &subs->active_mask);
|
|
if (err < 0) {
|
|
snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
|
|
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* complete callback from sync urb
|
|
*/
|
|
static void snd_complete_sync_urb(struct urb *urb, struct pt_regs *regs)
|
|
{
|
|
snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context;
|
|
snd_usb_substream_t *subs = ctx->subs;
|
|
snd_pcm_substream_t *substream = ctx->subs->pcm_substream;
|
|
int err = 0;
|
|
|
|
if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
|
|
! subs->running || /* can be stopped during retire callback */
|
|
(err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
|
|
(err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
|
|
clear_bit(ctx->index + 16, &subs->active_mask);
|
|
if (err < 0) {
|
|
snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
|
|
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* get the physical page pointer at the given offset */
|
|
static struct page *snd_pcm_get_vmalloc_page(snd_pcm_substream_t *subs,
|
|
unsigned long offset)
|
|
{
|
|
void *pageptr = subs->runtime->dma_area + offset;
|
|
return vmalloc_to_page(pageptr);
|
|
}
|
|
|
|
/* allocate virtual buffer; may be called more than once */
|
|
static int snd_pcm_alloc_vmalloc_buffer(snd_pcm_substream_t *subs, size_t size)
|
|
{
|
|
snd_pcm_runtime_t *runtime = subs->runtime;
|
|
if (runtime->dma_area) {
|
|
if (runtime->dma_bytes >= size)
|
|
return 0; /* already large enough */
|
|
vfree(runtime->dma_area);
|
|
}
|
|
runtime->dma_area = vmalloc(size);
|
|
if (! runtime->dma_area)
|
|
return -ENOMEM;
|
|
runtime->dma_bytes = size;
|
|
return 0;
|
|
}
|
|
|
|
/* free virtual buffer; may be called more than once */
|
|
static int snd_pcm_free_vmalloc_buffer(snd_pcm_substream_t *subs)
|
|
{
|
|
snd_pcm_runtime_t *runtime = subs->runtime;
|
|
if (runtime->dma_area) {
|
|
vfree(runtime->dma_area);
|
|
runtime->dma_area = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* unlink active urbs.
|
|
*/
|
|
static int deactivate_urbs(snd_usb_substream_t *subs, int force, int can_sleep)
|
|
{
|
|
unsigned int i;
|
|
int async;
|
|
|
|
subs->running = 0;
|
|
|
|
if (!force && subs->stream->chip->shutdown) /* to be sure... */
|
|
return -EBADFD;
|
|
|
|
async = !can_sleep && async_unlink;
|
|
|
|
if (! async && in_interrupt())
|
|
return 0;
|
|
|
|
for (i = 0; i < subs->nurbs; i++) {
|
|
if (test_bit(i, &subs->active_mask)) {
|
|
if (! test_and_set_bit(i, &subs->unlink_mask)) {
|
|
struct urb *u = subs->dataurb[i].urb;
|
|
if (async)
|
|
usb_unlink_urb(u);
|
|
else
|
|
usb_kill_urb(u);
|
|
}
|
|
}
|
|
}
|
|
if (subs->syncpipe) {
|
|
for (i = 0; i < SYNC_URBS; i++) {
|
|
if (test_bit(i+16, &subs->active_mask)) {
|
|
if (! test_and_set_bit(i+16, &subs->unlink_mask)) {
|
|
struct urb *u = subs->syncurb[i].urb;
|
|
if (async)
|
|
usb_unlink_urb(u);
|
|
else
|
|
usb_kill_urb(u);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* set up and start data/sync urbs
|
|
*/
|
|
static int start_urbs(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime)
|
|
{
|
|
unsigned int i;
|
|
int err;
|
|
|
|
if (subs->stream->chip->shutdown)
|
|
return -EBADFD;
|
|
|
|
for (i = 0; i < subs->nurbs; i++) {
|
|
snd_assert(subs->dataurb[i].urb, return -EINVAL);
|
|
if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
|
|
snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
|
|
goto __error;
|
|
}
|
|
}
|
|
if (subs->syncpipe) {
|
|
for (i = 0; i < SYNC_URBS; i++) {
|
|
snd_assert(subs->syncurb[i].urb, return -EINVAL);
|
|
if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
|
|
snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
|
|
goto __error;
|
|
}
|
|
}
|
|
}
|
|
|
|
subs->active_mask = 0;
|
|
subs->unlink_mask = 0;
|
|
subs->running = 1;
|
|
for (i = 0; i < subs->nurbs; i++) {
|
|
if ((err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC)) < 0) {
|
|
snd_printk(KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
|
|
goto __error;
|
|
}
|
|
set_bit(i, &subs->active_mask);
|
|
}
|
|
if (subs->syncpipe) {
|
|
for (i = 0; i < SYNC_URBS; i++) {
|
|
if ((err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC)) < 0) {
|
|
snd_printk(KERN_ERR "cannot submit syncpipe for urb %d, err = %d\n", i, err);
|
|
goto __error;
|
|
}
|
|
set_bit(i + 16, &subs->active_mask);
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
__error:
|
|
// snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
|
|
deactivate_urbs(subs, 0, 0);
|
|
return -EPIPE;
|
|
}
|
|
|
|
|
|
/*
|
|
* wait until all urbs are processed.
|
|
*/
|
|
static int wait_clear_urbs(snd_usb_substream_t *subs)
|
|
{
|
|
unsigned long end_time = jiffies + msecs_to_jiffies(1000);
|
|
unsigned int i;
|
|
int alive;
|
|
|
|
do {
|
|
alive = 0;
|
|
for (i = 0; i < subs->nurbs; i++) {
|
|
if (test_bit(i, &subs->active_mask))
|
|
alive++;
|
|
}
|
|
if (subs->syncpipe) {
|
|
for (i = 0; i < SYNC_URBS; i++) {
|
|
if (test_bit(i + 16, &subs->active_mask))
|
|
alive++;
|
|
}
|
|
}
|
|
if (! alive)
|
|
break;
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(1);
|
|
} while (time_before(jiffies, end_time));
|
|
if (alive)
|
|
snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* return the current pcm pointer. just return the hwptr_done value.
|
|
*/
|
|
static snd_pcm_uframes_t snd_usb_pcm_pointer(snd_pcm_substream_t *substream)
|
|
{
|
|
snd_usb_substream_t *subs;
|
|
snd_pcm_uframes_t hwptr_done;
|
|
|
|
subs = (snd_usb_substream_t *)substream->runtime->private_data;
|
|
spin_lock(&subs->lock);
|
|
hwptr_done = subs->hwptr_done;
|
|
spin_unlock(&subs->lock);
|
|
return hwptr_done;
|
|
}
|
|
|
|
|
|
/*
|
|
* start/stop substream
|
|
*/
|
|
static int snd_usb_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
|
|
{
|
|
snd_usb_substream_t *subs = (snd_usb_substream_t *)substream->runtime->private_data;
|
|
int err;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
err = start_urbs(subs, substream->runtime);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
err = deactivate_urbs(subs, 0, 0);
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
return err < 0 ? err : 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* release a urb data
|
|
*/
|
|
static void release_urb_ctx(snd_urb_ctx_t *u)
|
|
{
|
|
if (u->urb) {
|
|
if (u->buffer_size)
|
|
usb_buffer_free(u->subs->dev, u->buffer_size,
|
|
u->urb->transfer_buffer,
|
|
u->urb->transfer_dma);
|
|
usb_free_urb(u->urb);
|
|
u->urb = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* release a substream
|
|
*/
|
|
static void release_substream_urbs(snd_usb_substream_t *subs, int force)
|
|
{
|
|
int i;
|
|
|
|
/* stop urbs (to be sure) */
|
|
deactivate_urbs(subs, force, 1);
|
|
wait_clear_urbs(subs);
|
|
|
|
for (i = 0; i < MAX_URBS; i++)
|
|
release_urb_ctx(&subs->dataurb[i]);
|
|
for (i = 0; i < SYNC_URBS; i++)
|
|
release_urb_ctx(&subs->syncurb[i]);
|
|
usb_buffer_free(subs->dev, SYNC_URBS * 4,
|
|
subs->syncbuf, subs->sync_dma);
|
|
subs->syncbuf = NULL;
|
|
subs->nurbs = 0;
|
|
}
|
|
|
|
/*
|
|
* initialize a substream for plaback/capture
|
|
*/
|
|
static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_bytes,
|
|
unsigned int rate, unsigned int frame_bits)
|
|
{
|
|
unsigned int maxsize, n, i;
|
|
int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
|
|
unsigned int npacks[MAX_URBS], urb_packs, total_packs, packs_per_ms;
|
|
|
|
/* calculate the frequency in 16.16 format */
|
|
if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
|
|
subs->freqn = get_usb_full_speed_rate(rate);
|
|
else
|
|
subs->freqn = get_usb_high_speed_rate(rate);
|
|
subs->freqm = subs->freqn;
|
|
/* calculate max. frequency */
|
|
if (subs->maxpacksize) {
|
|
/* whatever fits into a max. size packet */
|
|
maxsize = subs->maxpacksize;
|
|
subs->freqmax = (maxsize / (frame_bits >> 3))
|
|
<< (16 - subs->datainterval);
|
|
} else {
|
|
/* no max. packet size: just take 25% higher than nominal */
|
|
subs->freqmax = subs->freqn + (subs->freqn >> 2);
|
|
maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
|
|
>> (16 - subs->datainterval);
|
|
}
|
|
subs->phase = 0;
|
|
|
|
if (subs->fill_max)
|
|
subs->curpacksize = subs->maxpacksize;
|
|
else
|
|
subs->curpacksize = maxsize;
|
|
|
|
if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
|
|
packs_per_ms = 8 >> subs->datainterval;
|
|
else
|
|
packs_per_ms = 1;
|
|
subs->packs_per_ms = packs_per_ms;
|
|
|
|
if (is_playback) {
|
|
urb_packs = nrpacks;
|
|
urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB);
|
|
urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
|
|
} else
|
|
urb_packs = 1;
|
|
urb_packs *= packs_per_ms;
|
|
|
|
/* decide how many packets to be used */
|
|
if (is_playback) {
|
|
unsigned int minsize;
|
|
/* determine how small a packet can be */
|
|
minsize = (subs->freqn >> (16 - subs->datainterval))
|
|
* (frame_bits >> 3);
|
|
/* with sync from device, assume it can be 12% lower */
|
|
if (subs->syncpipe)
|
|
minsize -= minsize >> 3;
|
|
minsize = max(minsize, 1u);
|
|
total_packs = (period_bytes + minsize - 1) / minsize;
|
|
/* round up to multiple of packs_per_ms */
|
|
total_packs = (total_packs + packs_per_ms - 1)
|
|
& ~(packs_per_ms - 1);
|
|
/* we need at least two URBs for queueing */
|
|
if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms)
|
|
total_packs = 2 * MIN_PACKS_URB * packs_per_ms;
|
|
} else {
|
|
total_packs = MAX_URBS * urb_packs;
|
|
}
|
|
subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
|
|
if (subs->nurbs > MAX_URBS) {
|
|
/* too much... */
|
|
subs->nurbs = MAX_URBS;
|
|
total_packs = MAX_URBS * urb_packs;
|
|
}
|
|
n = total_packs;
|
|
for (i = 0; i < subs->nurbs; i++) {
|
|
npacks[i] = n > urb_packs ? urb_packs : n;
|
|
n -= urb_packs;
|
|
}
|
|
if (subs->nurbs <= 1) {
|
|
/* too little - we need at least two packets
|
|
* to ensure contiguous playback/capture
|
|
*/
|
|
subs->nurbs = 2;
|
|
npacks[0] = (total_packs + 1) / 2;
|
|
npacks[1] = total_packs - npacks[0];
|
|
} else if (npacks[subs->nurbs-1] < MIN_PACKS_URB * packs_per_ms) {
|
|
/* the last packet is too small.. */
|
|
if (subs->nurbs > 2) {
|
|
/* merge to the first one */
|
|
npacks[0] += npacks[subs->nurbs - 1];
|
|
subs->nurbs--;
|
|
} else {
|
|
/* divide to two */
|
|
subs->nurbs = 2;
|
|
npacks[0] = (total_packs + 1) / 2;
|
|
npacks[1] = total_packs - npacks[0];
|
|
}
|
|
}
|
|
|
|
/* allocate and initialize data urbs */
|
|
for (i = 0; i < subs->nurbs; i++) {
|
|
snd_urb_ctx_t *u = &subs->dataurb[i];
|
|
u->index = i;
|
|
u->subs = subs;
|
|
u->packets = npacks[i];
|
|
u->buffer_size = maxsize * u->packets;
|
|
if (subs->fmt_type == USB_FORMAT_TYPE_II)
|
|
u->packets++; /* for transfer delimiter */
|
|
u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
|
|
if (! u->urb)
|
|
goto out_of_memory;
|
|
u->urb->transfer_buffer =
|
|
usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
|
|
&u->urb->transfer_dma);
|
|
if (! u->urb->transfer_buffer)
|
|
goto out_of_memory;
|
|
u->urb->pipe = subs->datapipe;
|
|
u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
|
|
u->urb->interval = 1 << subs->datainterval;
|
|
u->urb->context = u;
|
|
u->urb->complete = snd_complete_urb;
|
|
}
|
|
|
|
if (subs->syncpipe) {
|
|
/* allocate and initialize sync urbs */
|
|
subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
|
|
GFP_KERNEL, &subs->sync_dma);
|
|
if (! subs->syncbuf)
|
|
goto out_of_memory;
|
|
for (i = 0; i < SYNC_URBS; i++) {
|
|
snd_urb_ctx_t *u = &subs->syncurb[i];
|
|
u->index = i;
|
|
u->subs = subs;
|
|
u->packets = 1;
|
|
u->urb = usb_alloc_urb(1, GFP_KERNEL);
|
|
if (! u->urb)
|
|
goto out_of_memory;
|
|
u->urb->transfer_buffer = subs->syncbuf + i * 4;
|
|
u->urb->transfer_dma = subs->sync_dma + i * 4;
|
|
u->urb->transfer_buffer_length = 4;
|
|
u->urb->pipe = subs->syncpipe;
|
|
u->urb->transfer_flags = URB_ISO_ASAP |
|
|
URB_NO_TRANSFER_DMA_MAP;
|
|
u->urb->number_of_packets = 1;
|
|
u->urb->interval = 1 << subs->syncinterval;
|
|
u->urb->context = u;
|
|
u->urb->complete = snd_complete_sync_urb;
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
out_of_memory:
|
|
release_substream_urbs(subs, 0);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
/*
|
|
* find a matching audio format
|
|
*/
|
|
static struct audioformat *find_format(snd_usb_substream_t *subs, unsigned int format,
|
|
unsigned int rate, unsigned int channels)
|
|
{
|
|
struct list_head *p;
|
|
struct audioformat *found = NULL;
|
|
int cur_attr = 0, attr;
|
|
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *fp;
|
|
fp = list_entry(p, struct audioformat, list);
|
|
if (fp->format != format || fp->channels != channels)
|
|
continue;
|
|
if (rate < fp->rate_min || rate > fp->rate_max)
|
|
continue;
|
|
if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) {
|
|
unsigned int i;
|
|
for (i = 0; i < fp->nr_rates; i++)
|
|
if (fp->rate_table[i] == rate)
|
|
break;
|
|
if (i >= fp->nr_rates)
|
|
continue;
|
|
}
|
|
attr = fp->ep_attr & EP_ATTR_MASK;
|
|
if (! found) {
|
|
found = fp;
|
|
cur_attr = attr;
|
|
continue;
|
|
}
|
|
/* avoid async out and adaptive in if the other method
|
|
* supports the same format.
|
|
* this is a workaround for the case like
|
|
* M-audio audiophile USB.
|
|
*/
|
|
if (attr != cur_attr) {
|
|
if ((attr == EP_ATTR_ASYNC &&
|
|
subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
|
|
(attr == EP_ATTR_ADAPTIVE &&
|
|
subs->direction == SNDRV_PCM_STREAM_CAPTURE))
|
|
continue;
|
|
if ((cur_attr == EP_ATTR_ASYNC &&
|
|
subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
|
|
(cur_attr == EP_ATTR_ADAPTIVE &&
|
|
subs->direction == SNDRV_PCM_STREAM_CAPTURE)) {
|
|
found = fp;
|
|
cur_attr = attr;
|
|
continue;
|
|
}
|
|
}
|
|
/* find the format with the largest max. packet size */
|
|
if (fp->maxpacksize > found->maxpacksize) {
|
|
found = fp;
|
|
cur_attr = attr;
|
|
}
|
|
}
|
|
return found;
|
|
}
|
|
|
|
|
|
/*
|
|
* initialize the picth control and sample rate
|
|
*/
|
|
static int init_usb_pitch(struct usb_device *dev, int iface,
|
|
struct usb_host_interface *alts,
|
|
struct audioformat *fmt)
|
|
{
|
|
unsigned int ep;
|
|
unsigned char data[1];
|
|
int err;
|
|
|
|
ep = get_endpoint(alts, 0)->bEndpointAddress;
|
|
/* if endpoint has pitch control, enable it */
|
|
if (fmt->attributes & EP_CS_ATTR_PITCH_CONTROL) {
|
|
data[0] = 1;
|
|
if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
|
|
USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
|
|
PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
|
|
snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
|
|
dev->devnum, iface, ep);
|
|
return err;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int init_usb_sample_rate(struct usb_device *dev, int iface,
|
|
struct usb_host_interface *alts,
|
|
struct audioformat *fmt, int rate)
|
|
{
|
|
unsigned int ep;
|
|
unsigned char data[3];
|
|
int err;
|
|
|
|
ep = get_endpoint(alts, 0)->bEndpointAddress;
|
|
/* if endpoint has sampling rate control, set it */
|
|
if (fmt->attributes & EP_CS_ATTR_SAMPLE_RATE) {
|
|
int crate;
|
|
data[0] = rate;
|
|
data[1] = rate >> 8;
|
|
data[2] = rate >> 16;
|
|
if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
|
|
USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
|
|
SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
|
|
snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep 0x%x\n",
|
|
dev->devnum, iface, fmt->altsetting, rate, ep);
|
|
return err;
|
|
}
|
|
if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR,
|
|
USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
|
|
SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
|
|
snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep 0x%x\n",
|
|
dev->devnum, iface, fmt->altsetting, ep);
|
|
return 0; /* some devices don't support reading */
|
|
}
|
|
crate = data[0] | (data[1] << 8) | (data[2] << 16);
|
|
if (crate != rate) {
|
|
snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
|
|
// runtime->rate = crate;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* find a matching format and set up the interface
|
|
*/
|
|
static int set_format(snd_usb_substream_t *subs, struct audioformat *fmt)
|
|
{
|
|
struct usb_device *dev = subs->dev;
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface_descriptor *altsd;
|
|
struct usb_interface *iface;
|
|
unsigned int ep, attr;
|
|
int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
|
|
int err;
|
|
|
|
iface = usb_ifnum_to_if(dev, fmt->iface);
|
|
snd_assert(iface, return -EINVAL);
|
|
alts = &iface->altsetting[fmt->altset_idx];
|
|
altsd = get_iface_desc(alts);
|
|
snd_assert(altsd->bAlternateSetting == fmt->altsetting, return -EINVAL);
|
|
|
|
if (fmt == subs->cur_audiofmt)
|
|
return 0;
|
|
|
|
/* close the old interface */
|
|
if (subs->interface >= 0 && subs->interface != fmt->iface) {
|
|
usb_set_interface(subs->dev, subs->interface, 0);
|
|
subs->interface = -1;
|
|
subs->format = 0;
|
|
}
|
|
|
|
/* set interface */
|
|
if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) {
|
|
if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) {
|
|
snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n",
|
|
dev->devnum, fmt->iface, fmt->altsetting);
|
|
return -EIO;
|
|
}
|
|
snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting);
|
|
subs->interface = fmt->iface;
|
|
subs->format = fmt->altset_idx;
|
|
}
|
|
|
|
/* create a data pipe */
|
|
ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK;
|
|
if (is_playback)
|
|
subs->datapipe = usb_sndisocpipe(dev, ep);
|
|
else
|
|
subs->datapipe = usb_rcvisocpipe(dev, ep);
|
|
if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH &&
|
|
get_endpoint(alts, 0)->bInterval >= 1 &&
|
|
get_endpoint(alts, 0)->bInterval <= 4)
|
|
subs->datainterval = get_endpoint(alts, 0)->bInterval - 1;
|
|
else
|
|
subs->datainterval = 0;
|
|
subs->syncpipe = subs->syncinterval = 0;
|
|
subs->maxpacksize = fmt->maxpacksize;
|
|
subs->fill_max = 0;
|
|
|
|
/* we need a sync pipe in async OUT or adaptive IN mode */
|
|
/* check the number of EP, since some devices have broken
|
|
* descriptors which fool us. if it has only one EP,
|
|
* assume it as adaptive-out or sync-in.
|
|
*/
|
|
attr = fmt->ep_attr & EP_ATTR_MASK;
|
|
if (((is_playback && attr == EP_ATTR_ASYNC) ||
|
|
(! is_playback && attr == EP_ATTR_ADAPTIVE)) &&
|
|
altsd->bNumEndpoints >= 2) {
|
|
/* check sync-pipe endpoint */
|
|
/* ... and check descriptor size before accessing bSynchAddress
|
|
because there is a version of the SB Audigy 2 NX firmware lacking
|
|
the audio fields in the endpoint descriptors */
|
|
if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
|
|
(get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
|
|
get_endpoint(alts, 1)->bSynchAddress != 0)) {
|
|
snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
|
|
dev->devnum, fmt->iface, fmt->altsetting);
|
|
return -EINVAL;
|
|
}
|
|
ep = get_endpoint(alts, 1)->bEndpointAddress;
|
|
if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
|
|
(( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
|
|
(!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
|
|
snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
|
|
dev->devnum, fmt->iface, fmt->altsetting);
|
|
return -EINVAL;
|
|
}
|
|
ep &= USB_ENDPOINT_NUMBER_MASK;
|
|
if (is_playback)
|
|
subs->syncpipe = usb_rcvisocpipe(dev, ep);
|
|
else
|
|
subs->syncpipe = usb_sndisocpipe(dev, ep);
|
|
if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
|
|
get_endpoint(alts, 1)->bRefresh >= 1 &&
|
|
get_endpoint(alts, 1)->bRefresh <= 9)
|
|
subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
|
|
else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
|
|
subs->syncinterval = 1;
|
|
else if (get_endpoint(alts, 1)->bInterval >= 1 &&
|
|
get_endpoint(alts, 1)->bInterval <= 16)
|
|
subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
|
|
else
|
|
subs->syncinterval = 3;
|
|
}
|
|
|
|
/* always fill max packet size */
|
|
if (fmt->attributes & EP_CS_ATTR_FILL_MAX)
|
|
subs->fill_max = 1;
|
|
|
|
if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0)
|
|
return err;
|
|
|
|
subs->cur_audiofmt = fmt;
|
|
|
|
#if 0
|
|
printk("setting done: format = %d, rate = %d, channels = %d\n",
|
|
fmt->format, fmt->rate, fmt->channels);
|
|
printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n",
|
|
subs->datapipe, subs->syncpipe);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* hw_params callback
|
|
*
|
|
* allocate a buffer and set the given audio format.
|
|
*
|
|
* so far we use a physically linear buffer although packetize transfer
|
|
* doesn't need a continuous area.
|
|
* if sg buffer is supported on the later version of alsa, we'll follow
|
|
* that.
|
|
*/
|
|
static int snd_usb_hw_params(snd_pcm_substream_t *substream,
|
|
snd_pcm_hw_params_t *hw_params)
|
|
{
|
|
snd_usb_substream_t *subs = (snd_usb_substream_t *)substream->runtime->private_data;
|
|
struct audioformat *fmt;
|
|
unsigned int channels, rate, format;
|
|
int ret, changed;
|
|
|
|
ret = snd_pcm_alloc_vmalloc_buffer(substream,
|
|
params_buffer_bytes(hw_params));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
format = params_format(hw_params);
|
|
rate = params_rate(hw_params);
|
|
channels = params_channels(hw_params);
|
|
fmt = find_format(subs, format, rate, channels);
|
|
if (! fmt) {
|
|
snd_printd(KERN_DEBUG "cannot set format: format = %s, rate = %d, channels = %d\n",
|
|
snd_pcm_format_name(format), rate, channels);
|
|
return -EINVAL;
|
|
}
|
|
|
|
changed = subs->cur_audiofmt != fmt ||
|
|
subs->period_bytes != params_period_bytes(hw_params) ||
|
|
subs->cur_rate != rate;
|
|
if ((ret = set_format(subs, fmt)) < 0)
|
|
return ret;
|
|
|
|
if (subs->cur_rate != rate) {
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface *iface;
|
|
iface = usb_ifnum_to_if(subs->dev, fmt->iface);
|
|
alts = &iface->altsetting[fmt->altset_idx];
|
|
ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
subs->cur_rate = rate;
|
|
}
|
|
|
|
if (changed) {
|
|
/* format changed */
|
|
release_substream_urbs(subs, 0);
|
|
/* influenced: period_bytes, channels, rate, format, */
|
|
ret = init_substream_urbs(subs, params_period_bytes(hw_params),
|
|
params_rate(hw_params),
|
|
snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* hw_free callback
|
|
*
|
|
* reset the audio format and release the buffer
|
|
*/
|
|
static int snd_usb_hw_free(snd_pcm_substream_t *substream)
|
|
{
|
|
snd_usb_substream_t *subs = (snd_usb_substream_t *)substream->runtime->private_data;
|
|
|
|
subs->cur_audiofmt = NULL;
|
|
subs->cur_rate = 0;
|
|
subs->period_bytes = 0;
|
|
release_substream_urbs(subs, 0);
|
|
return snd_pcm_free_vmalloc_buffer(substream);
|
|
}
|
|
|
|
/*
|
|
* prepare callback
|
|
*
|
|
* only a few subtle things...
|
|
*/
|
|
static int snd_usb_pcm_prepare(snd_pcm_substream_t *substream)
|
|
{
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
snd_usb_substream_t *subs = (snd_usb_substream_t *)runtime->private_data;
|
|
|
|
if (! subs->cur_audiofmt) {
|
|
snd_printk(KERN_ERR "usbaudio: no format is specified!\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
/* some unit conversions in runtime */
|
|
subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize);
|
|
subs->curframesize = bytes_to_frames(runtime, subs->curpacksize);
|
|
|
|
/* reset the pointer */
|
|
subs->hwptr_done = 0;
|
|
subs->transfer_done = 0;
|
|
subs->phase = 0;
|
|
|
|
/* clear urbs (to be sure) */
|
|
deactivate_urbs(subs, 0, 1);
|
|
wait_clear_urbs(subs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static snd_pcm_hardware_t snd_usb_playback =
|
|
{
|
|
.info = SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_BATCH |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_BLOCK_TRANSFER,
|
|
.buffer_bytes_max = 1024 * 1024,
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = 512 * 1024,
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
};
|
|
|
|
static snd_pcm_hardware_t snd_usb_capture =
|
|
{
|
|
.info = SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_BATCH |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_BLOCK_TRANSFER,
|
|
.buffer_bytes_max = 1024 * 1024,
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = 512 * 1024,
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
};
|
|
|
|
/*
|
|
* h/w constraints
|
|
*/
|
|
|
|
#ifdef HW_CONST_DEBUG
|
|
#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
|
|
#else
|
|
#define hwc_debug(fmt, args...) /**/
|
|
#endif
|
|
|
|
static int hw_check_valid_format(snd_pcm_hw_params_t *params, struct audioformat *fp)
|
|
{
|
|
snd_interval_t *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
|
|
snd_interval_t *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
|
|
snd_mask_t *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
|
|
|
|
/* check the format */
|
|
if (! snd_mask_test(fmts, fp->format)) {
|
|
hwc_debug(" > check: no supported format %d\n", fp->format);
|
|
return 0;
|
|
}
|
|
/* check the channels */
|
|
if (fp->channels < ct->min || fp->channels > ct->max) {
|
|
hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max);
|
|
return 0;
|
|
}
|
|
/* check the rate is within the range */
|
|
if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) {
|
|
hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max);
|
|
return 0;
|
|
}
|
|
if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) {
|
|
hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int hw_rule_rate(snd_pcm_hw_params_t *params,
|
|
snd_pcm_hw_rule_t *rule)
|
|
{
|
|
snd_usb_substream_t *subs = rule->private;
|
|
struct list_head *p;
|
|
snd_interval_t *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
|
|
unsigned int rmin, rmax;
|
|
int changed;
|
|
|
|
hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max);
|
|
changed = 0;
|
|
rmin = rmax = 0;
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *fp;
|
|
fp = list_entry(p, struct audioformat, list);
|
|
if (! hw_check_valid_format(params, fp))
|
|
continue;
|
|
if (changed++) {
|
|
if (rmin > fp->rate_min)
|
|
rmin = fp->rate_min;
|
|
if (rmax < fp->rate_max)
|
|
rmax = fp->rate_max;
|
|
} else {
|
|
rmin = fp->rate_min;
|
|
rmax = fp->rate_max;
|
|
}
|
|
}
|
|
|
|
if (! changed) {
|
|
hwc_debug(" --> get empty\n");
|
|
it->empty = 1;
|
|
return -EINVAL;
|
|
}
|
|
|
|
changed = 0;
|
|
if (it->min < rmin) {
|
|
it->min = rmin;
|
|
it->openmin = 0;
|
|
changed = 1;
|
|
}
|
|
if (it->max > rmax) {
|
|
it->max = rmax;
|
|
it->openmax = 0;
|
|
changed = 1;
|
|
}
|
|
if (snd_interval_checkempty(it)) {
|
|
it->empty = 1;
|
|
return -EINVAL;
|
|
}
|
|
hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
|
|
return changed;
|
|
}
|
|
|
|
|
|
static int hw_rule_channels(snd_pcm_hw_params_t *params,
|
|
snd_pcm_hw_rule_t *rule)
|
|
{
|
|
snd_usb_substream_t *subs = rule->private;
|
|
struct list_head *p;
|
|
snd_interval_t *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
|
|
unsigned int rmin, rmax;
|
|
int changed;
|
|
|
|
hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max);
|
|
changed = 0;
|
|
rmin = rmax = 0;
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *fp;
|
|
fp = list_entry(p, struct audioformat, list);
|
|
if (! hw_check_valid_format(params, fp))
|
|
continue;
|
|
if (changed++) {
|
|
if (rmin > fp->channels)
|
|
rmin = fp->channels;
|
|
if (rmax < fp->channels)
|
|
rmax = fp->channels;
|
|
} else {
|
|
rmin = fp->channels;
|
|
rmax = fp->channels;
|
|
}
|
|
}
|
|
|
|
if (! changed) {
|
|
hwc_debug(" --> get empty\n");
|
|
it->empty = 1;
|
|
return -EINVAL;
|
|
}
|
|
|
|
changed = 0;
|
|
if (it->min < rmin) {
|
|
it->min = rmin;
|
|
it->openmin = 0;
|
|
changed = 1;
|
|
}
|
|
if (it->max > rmax) {
|
|
it->max = rmax;
|
|
it->openmax = 0;
|
|
changed = 1;
|
|
}
|
|
if (snd_interval_checkempty(it)) {
|
|
it->empty = 1;
|
|
return -EINVAL;
|
|
}
|
|
hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
|
|
return changed;
|
|
}
|
|
|
|
static int hw_rule_format(snd_pcm_hw_params_t *params,
|
|
snd_pcm_hw_rule_t *rule)
|
|
{
|
|
snd_usb_substream_t *subs = rule->private;
|
|
struct list_head *p;
|
|
snd_mask_t *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
|
|
u64 fbits;
|
|
u32 oldbits[2];
|
|
int changed;
|
|
|
|
hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]);
|
|
fbits = 0;
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *fp;
|
|
fp = list_entry(p, struct audioformat, list);
|
|
if (! hw_check_valid_format(params, fp))
|
|
continue;
|
|
fbits |= (1ULL << fp->format);
|
|
}
|
|
|
|
oldbits[0] = fmt->bits[0];
|
|
oldbits[1] = fmt->bits[1];
|
|
fmt->bits[0] &= (u32)fbits;
|
|
fmt->bits[1] &= (u32)(fbits >> 32);
|
|
if (! fmt->bits[0] && ! fmt->bits[1]) {
|
|
hwc_debug(" --> get empty\n");
|
|
return -EINVAL;
|
|
}
|
|
changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]);
|
|
hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed);
|
|
return changed;
|
|
}
|
|
|
|
#define MAX_MASK 64
|
|
|
|
/*
|
|
* check whether the registered audio formats need special hw-constraints
|
|
*/
|
|
static int check_hw_params_convention(snd_usb_substream_t *subs)
|
|
{
|
|
int i;
|
|
u32 *channels;
|
|
u32 *rates;
|
|
u32 cmaster, rmaster;
|
|
u32 rate_min = 0, rate_max = 0;
|
|
struct list_head *p;
|
|
int err = 1;
|
|
|
|
channels = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL);
|
|
rates = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL);
|
|
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *f;
|
|
f = list_entry(p, struct audioformat, list);
|
|
/* unconventional channels? */
|
|
if (f->channels > 32)
|
|
goto __out;
|
|
/* continuous rate min/max matches? */
|
|
if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) {
|
|
if (rate_min && f->rate_min != rate_min)
|
|
goto __out;
|
|
if (rate_max && f->rate_max != rate_max)
|
|
goto __out;
|
|
rate_min = f->rate_min;
|
|
rate_max = f->rate_max;
|
|
}
|
|
/* combination of continuous rates and fixed rates? */
|
|
if (rates[f->format] & SNDRV_PCM_RATE_CONTINUOUS) {
|
|
if (f->rates != rates[f->format])
|
|
goto __out;
|
|
}
|
|
if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) {
|
|
if (rates[f->format] && rates[f->format] != f->rates)
|
|
goto __out;
|
|
}
|
|
channels[f->format] |= (1 << f->channels);
|
|
rates[f->format] |= f->rates;
|
|
}
|
|
/* check whether channels and rates match for all formats */
|
|
cmaster = rmaster = 0;
|
|
for (i = 0; i < MAX_MASK; i++) {
|
|
if (cmaster != channels[i] && cmaster && channels[i])
|
|
goto __out;
|
|
if (rmaster != rates[i] && rmaster && rates[i])
|
|
goto __out;
|
|
if (channels[i])
|
|
cmaster = channels[i];
|
|
if (rates[i])
|
|
rmaster = rates[i];
|
|
}
|
|
/* check whether channels match for all distinct rates */
|
|
memset(channels, 0, MAX_MASK * sizeof(u32));
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *f;
|
|
f = list_entry(p, struct audioformat, list);
|
|
if (f->rates & SNDRV_PCM_RATE_CONTINUOUS)
|
|
continue;
|
|
for (i = 0; i < 32; i++) {
|
|
if (f->rates & (1 << i))
|
|
channels[i] |= (1 << f->channels);
|
|
}
|
|
}
|
|
cmaster = 0;
|
|
for (i = 0; i < 32; i++) {
|
|
if (cmaster != channels[i] && cmaster && channels[i])
|
|
goto __out;
|
|
if (channels[i])
|
|
cmaster = channels[i];
|
|
}
|
|
err = 0;
|
|
|
|
__out:
|
|
kfree(channels);
|
|
kfree(rates);
|
|
return err;
|
|
}
|
|
|
|
|
|
/*
|
|
* set up the runtime hardware information.
|
|
*/
|
|
|
|
static int setup_hw_info(snd_pcm_runtime_t *runtime, snd_usb_substream_t *subs)
|
|
{
|
|
struct list_head *p;
|
|
int err;
|
|
|
|
runtime->hw.formats = subs->formats;
|
|
|
|
runtime->hw.rate_min = 0x7fffffff;
|
|
runtime->hw.rate_max = 0;
|
|
runtime->hw.channels_min = 256;
|
|
runtime->hw.channels_max = 0;
|
|
runtime->hw.rates = 0;
|
|
/* check min/max rates and channels */
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *fp;
|
|
fp = list_entry(p, struct audioformat, list);
|
|
runtime->hw.rates |= fp->rates;
|
|
if (runtime->hw.rate_min > fp->rate_min)
|
|
runtime->hw.rate_min = fp->rate_min;
|
|
if (runtime->hw.rate_max < fp->rate_max)
|
|
runtime->hw.rate_max = fp->rate_max;
|
|
if (runtime->hw.channels_min > fp->channels)
|
|
runtime->hw.channels_min = fp->channels;
|
|
if (runtime->hw.channels_max < fp->channels)
|
|
runtime->hw.channels_max = fp->channels;
|
|
if (fp->fmt_type == USB_FORMAT_TYPE_II && fp->frame_size > 0) {
|
|
/* FIXME: there might be more than one audio formats... */
|
|
runtime->hw.period_bytes_min = runtime->hw.period_bytes_max =
|
|
fp->frame_size;
|
|
}
|
|
}
|
|
|
|
/* set the period time minimum 1ms */
|
|
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
|
|
1000 * MIN_PACKS_URB,
|
|
/*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);
|
|
|
|
if (check_hw_params_convention(subs)) {
|
|
hwc_debug("setting extra hw constraints...\n");
|
|
if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
|
|
hw_rule_rate, subs,
|
|
SNDRV_PCM_HW_PARAM_FORMAT,
|
|
SNDRV_PCM_HW_PARAM_CHANNELS,
|
|
-1)) < 0)
|
|
return err;
|
|
if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
|
|
hw_rule_channels, subs,
|
|
SNDRV_PCM_HW_PARAM_FORMAT,
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
|
-1)) < 0)
|
|
return err;
|
|
if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
|
|
hw_rule_format, subs,
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
|
SNDRV_PCM_HW_PARAM_CHANNELS,
|
|
-1)) < 0)
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_pcm_open(snd_pcm_substream_t *substream, int direction,
|
|
snd_pcm_hardware_t *hw)
|
|
{
|
|
snd_usb_stream_t *as = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
snd_usb_substream_t *subs = &as->substream[direction];
|
|
|
|
subs->interface = -1;
|
|
subs->format = 0;
|
|
runtime->hw = *hw;
|
|
runtime->private_data = subs;
|
|
subs->pcm_substream = substream;
|
|
return setup_hw_info(runtime, subs);
|
|
}
|
|
|
|
static int snd_usb_pcm_close(snd_pcm_substream_t *substream, int direction)
|
|
{
|
|
snd_usb_stream_t *as = snd_pcm_substream_chip(substream);
|
|
snd_usb_substream_t *subs = &as->substream[direction];
|
|
|
|
if (subs->interface >= 0) {
|
|
usb_set_interface(subs->dev, subs->interface, 0);
|
|
subs->interface = -1;
|
|
}
|
|
subs->pcm_substream = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_playback_open(snd_pcm_substream_t *substream)
|
|
{
|
|
return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK, &snd_usb_playback);
|
|
}
|
|
|
|
static int snd_usb_playback_close(snd_pcm_substream_t *substream)
|
|
{
|
|
return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK);
|
|
}
|
|
|
|
static int snd_usb_capture_open(snd_pcm_substream_t *substream)
|
|
{
|
|
return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE, &snd_usb_capture);
|
|
}
|
|
|
|
static int snd_usb_capture_close(snd_pcm_substream_t *substream)
|
|
{
|
|
return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE);
|
|
}
|
|
|
|
static snd_pcm_ops_t snd_usb_playback_ops = {
|
|
.open = snd_usb_playback_open,
|
|
.close = snd_usb_playback_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_usb_hw_params,
|
|
.hw_free = snd_usb_hw_free,
|
|
.prepare = snd_usb_pcm_prepare,
|
|
.trigger = snd_usb_pcm_trigger,
|
|
.pointer = snd_usb_pcm_pointer,
|
|
.page = snd_pcm_get_vmalloc_page,
|
|
};
|
|
|
|
static snd_pcm_ops_t snd_usb_capture_ops = {
|
|
.open = snd_usb_capture_open,
|
|
.close = snd_usb_capture_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_usb_hw_params,
|
|
.hw_free = snd_usb_hw_free,
|
|
.prepare = snd_usb_pcm_prepare,
|
|
.trigger = snd_usb_pcm_trigger,
|
|
.pointer = snd_usb_pcm_pointer,
|
|
.page = snd_pcm_get_vmalloc_page,
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
* helper functions
|
|
*/
|
|
|
|
/*
|
|
* combine bytes and get an integer value
|
|
*/
|
|
unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size)
|
|
{
|
|
switch (size) {
|
|
case 1: return *bytes;
|
|
case 2: return combine_word(bytes);
|
|
case 3: return combine_triple(bytes);
|
|
case 4: return combine_quad(bytes);
|
|
default: return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* parse descriptor buffer and return the pointer starting the given
|
|
* descriptor type.
|
|
*/
|
|
void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype)
|
|
{
|
|
u8 *p, *end, *next;
|
|
|
|
p = descstart;
|
|
end = p + desclen;
|
|
for (; p < end;) {
|
|
if (p[0] < 2)
|
|
return NULL;
|
|
next = p + p[0];
|
|
if (next > end)
|
|
return NULL;
|
|
if (p[1] == dtype && (!after || (void *)p > after)) {
|
|
return p;
|
|
}
|
|
p = next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* find a class-specified interface descriptor with the given subtype.
|
|
*/
|
|
void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype)
|
|
{
|
|
unsigned char *p = after;
|
|
|
|
while ((p = snd_usb_find_desc(buffer, buflen, p,
|
|
USB_DT_CS_INTERFACE)) != NULL) {
|
|
if (p[0] >= 3 && p[2] == dsubtype)
|
|
return p;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Wrapper for usb_control_msg().
|
|
* Allocates a temp buffer to prevent dmaing from/to the stack.
|
|
*/
|
|
int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
|
|
__u8 requesttype, __u16 value, __u16 index, void *data,
|
|
__u16 size, int timeout)
|
|
{
|
|
int err;
|
|
void *buf = NULL;
|
|
|
|
if (size > 0) {
|
|
buf = kmalloc(size, GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
memcpy(buf, data, size);
|
|
}
|
|
err = usb_control_msg(dev, pipe, request, requesttype,
|
|
value, index, buf, size, timeout);
|
|
if (size > 0) {
|
|
memcpy(data, buf, size);
|
|
kfree(buf);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
|
|
/*
|
|
* entry point for linux usb interface
|
|
*/
|
|
|
|
static int usb_audio_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id);
|
|
static void usb_audio_disconnect(struct usb_interface *intf);
|
|
|
|
static struct usb_device_id usb_audio_ids [] = {
|
|
#include "usbquirks.h"
|
|
{ .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
|
|
.bInterfaceClass = USB_CLASS_AUDIO,
|
|
.bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL },
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE (usb, usb_audio_ids);
|
|
|
|
static struct usb_driver usb_audio_driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "snd-usb-audio",
|
|
.probe = usb_audio_probe,
|
|
.disconnect = usb_audio_disconnect,
|
|
.id_table = usb_audio_ids,
|
|
};
|
|
|
|
|
|
/*
|
|
* proc interface for list the supported pcm formats
|
|
*/
|
|
static void proc_dump_substream_formats(snd_usb_substream_t *subs, snd_info_buffer_t *buffer)
|
|
{
|
|
struct list_head *p;
|
|
static char *sync_types[4] = {
|
|
"NONE", "ASYNC", "ADAPTIVE", "SYNC"
|
|
};
|
|
|
|
list_for_each(p, &subs->fmt_list) {
|
|
struct audioformat *fp;
|
|
fp = list_entry(p, struct audioformat, list);
|
|
snd_iprintf(buffer, " Interface %d\n", fp->iface);
|
|
snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
|
|
snd_iprintf(buffer, " Format: %s\n", snd_pcm_format_name(fp->format));
|
|
snd_iprintf(buffer, " Channels: %d\n", fp->channels);
|
|
snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
|
|
fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
|
|
fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
|
|
sync_types[(fp->ep_attr & EP_ATTR_MASK) >> 2]);
|
|
if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
|
|
snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
|
|
fp->rate_min, fp->rate_max);
|
|
} else {
|
|
unsigned int i;
|
|
snd_iprintf(buffer, " Rates: ");
|
|
for (i = 0; i < fp->nr_rates; i++) {
|
|
if (i > 0)
|
|
snd_iprintf(buffer, ", ");
|
|
snd_iprintf(buffer, "%d", fp->rate_table[i]);
|
|
}
|
|
snd_iprintf(buffer, "\n");
|
|
}
|
|
// snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
|
|
// snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes);
|
|
}
|
|
}
|
|
|
|
static void proc_dump_substream_status(snd_usb_substream_t *subs, snd_info_buffer_t *buffer)
|
|
{
|
|
if (subs->running) {
|
|
unsigned int i;
|
|
snd_iprintf(buffer, " Status: Running\n");
|
|
snd_iprintf(buffer, " Interface = %d\n", subs->interface);
|
|
snd_iprintf(buffer, " Altset = %d\n", subs->format);
|
|
snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs);
|
|
for (i = 0; i < subs->nurbs; i++)
|
|
snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
|
|
snd_iprintf(buffer, "]\n");
|
|
snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize);
|
|
snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
|
|
snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
|
|
? get_full_speed_hz(subs->freqm)
|
|
: get_high_speed_hz(subs->freqm),
|
|
subs->freqm >> 16, subs->freqm & 0xffff);
|
|
} else {
|
|
snd_iprintf(buffer, " Status: Stop\n");
|
|
}
|
|
}
|
|
|
|
static void proc_pcm_format_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
|
|
{
|
|
snd_usb_stream_t *stream = entry->private_data;
|
|
|
|
snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
|
|
|
|
if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
|
|
snd_iprintf(buffer, "\nPlayback:\n");
|
|
proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
|
|
proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
|
|
}
|
|
if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
|
|
snd_iprintf(buffer, "\nCapture:\n");
|
|
proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
|
|
proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
|
|
}
|
|
}
|
|
|
|
static void proc_pcm_format_add(snd_usb_stream_t *stream)
|
|
{
|
|
snd_info_entry_t *entry;
|
|
char name[32];
|
|
snd_card_t *card = stream->chip->card;
|
|
|
|
sprintf(name, "stream%d", stream->pcm_index);
|
|
if (! snd_card_proc_new(card, name, &entry))
|
|
snd_info_set_text_ops(entry, stream, 1024, proc_pcm_format_read);
|
|
}
|
|
|
|
|
|
/*
|
|
* initialize the substream instance.
|
|
*/
|
|
|
|
static void init_substream(snd_usb_stream_t *as, int stream, struct audioformat *fp)
|
|
{
|
|
snd_usb_substream_t *subs = &as->substream[stream];
|
|
|
|
INIT_LIST_HEAD(&subs->fmt_list);
|
|
spin_lock_init(&subs->lock);
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
tasklet_init(&subs->start_period_elapsed, start_period_elapsed,
|
|
(unsigned long)subs);
|
|
|
|
subs->stream = as;
|
|
subs->direction = stream;
|
|
subs->dev = as->chip->dev;
|
|
if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
|
|
subs->ops = audio_urb_ops[stream];
|
|
else
|
|
subs->ops = audio_urb_ops_high_speed[stream];
|
|
snd_pcm_set_ops(as->pcm, stream,
|
|
stream == SNDRV_PCM_STREAM_PLAYBACK ?
|
|
&snd_usb_playback_ops : &snd_usb_capture_ops);
|
|
|
|
list_add_tail(&fp->list, &subs->fmt_list);
|
|
subs->formats |= 1ULL << fp->format;
|
|
subs->endpoint = fp->endpoint;
|
|
subs->num_formats++;
|
|
subs->fmt_type = fp->fmt_type;
|
|
}
|
|
|
|
|
|
/*
|
|
* free a substream
|
|
*/
|
|
static void free_substream(snd_usb_substream_t *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);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* free a usb stream instance
|
|
*/
|
|
static void snd_usb_audio_stream_free(snd_usb_stream_t *stream)
|
|
{
|
|
free_substream(&stream->substream[0]);
|
|
free_substream(&stream->substream[1]);
|
|
list_del(&stream->list);
|
|
kfree(stream);
|
|
}
|
|
|
|
static void snd_usb_audio_pcm_free(snd_pcm_t *pcm)
|
|
{
|
|
snd_usb_stream_t *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.
|
|
*/
|
|
static int add_audio_endpoint(snd_usb_audio_t *chip, int stream, struct audioformat *fp)
|
|
{
|
|
struct list_head *p;
|
|
snd_usb_stream_t *as;
|
|
snd_usb_substream_t *subs;
|
|
snd_pcm_t *pcm;
|
|
int err;
|
|
|
|
list_for_each(p, &chip->pcm_list) {
|
|
as = list_entry(p, snd_usb_stream_t, 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 |= 1ULL << fp->format;
|
|
return 0;
|
|
}
|
|
}
|
|
/* look for an empty stream */
|
|
list_for_each(p, &chip->pcm_list) {
|
|
as = list_entry(p, snd_usb_stream_t, 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;
|
|
init_substream(as, stream, fp);
|
|
return 0;
|
|
}
|
|
|
|
/* create a new pcm */
|
|
as = kmalloc(sizeof(*as), GFP_KERNEL);
|
|
if (! as)
|
|
return -ENOMEM;
|
|
memset(as, 0, sizeof(*as));
|
|
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");
|
|
|
|
init_substream(as, stream, fp);
|
|
|
|
list_add(&as->list, &chip->pcm_list);
|
|
chip->pcm_devs++;
|
|
|
|
proc_pcm_format_add(as);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* check if the device uses big-endian samples
|
|
*/
|
|
static int is_big_endian_format(snd_usb_audio_t *chip, struct audioformat *fp)
|
|
{
|
|
switch (chip->usb_id) {
|
|
case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
|
|
if (fp->endpoint & USB_DIR_IN)
|
|
return 1;
|
|
break;
|
|
case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* parse the audio format type I descriptor
|
|
* and returns the corresponding pcm format
|
|
*
|
|
* @dev: usb device
|
|
* @fp: audioformat record
|
|
* @format: the format tag (wFormatTag)
|
|
* @fmt: the format type descriptor
|
|
*/
|
|
static int parse_audio_format_i_type(snd_usb_audio_t *chip, struct audioformat *fp,
|
|
int format, unsigned char *fmt)
|
|
{
|
|
int pcm_format;
|
|
int sample_width, sample_bytes;
|
|
|
|
/* FIXME: correct endianess and sign? */
|
|
pcm_format = -1;
|
|
sample_width = fmt[6];
|
|
sample_bytes = fmt[5];
|
|
switch (format) {
|
|
case 0: /* some devices don't define this correctly... */
|
|
snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting);
|
|
/* fall-through */
|
|
case USB_AUDIO_FORMAT_PCM:
|
|
if (sample_width > sample_bytes * 8) {
|
|
snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting,
|
|
sample_width, sample_bytes);
|
|
}
|
|
/* check the format byte size */
|
|
switch (fmt[5]) {
|
|
case 1:
|
|
pcm_format = SNDRV_PCM_FORMAT_S8;
|
|
break;
|
|
case 2:
|
|
if (is_big_endian_format(chip, fp))
|
|
pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */
|
|
else
|
|
pcm_format = SNDRV_PCM_FORMAT_S16_LE;
|
|
break;
|
|
case 3:
|
|
if (is_big_endian_format(chip, fp))
|
|
pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */
|
|
else
|
|
pcm_format = SNDRV_PCM_FORMAT_S24_3LE;
|
|
break;
|
|
case 4:
|
|
pcm_format = SNDRV_PCM_FORMAT_S32_LE;
|
|
break;
|
|
default:
|
|
snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
|
|
chip->dev->devnum, fp->iface,
|
|
fp->altsetting, sample_width, sample_bytes);
|
|
break;
|
|
}
|
|
break;
|
|
case USB_AUDIO_FORMAT_PCM8:
|
|
/* Dallas DS4201 workaround */
|
|
if (chip->usb_id == USB_ID(0x04fa, 0x4201))
|
|
pcm_format = SNDRV_PCM_FORMAT_S8;
|
|
else
|
|
pcm_format = SNDRV_PCM_FORMAT_U8;
|
|
break;
|
|
case USB_AUDIO_FORMAT_IEEE_FLOAT:
|
|
pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE;
|
|
break;
|
|
case USB_AUDIO_FORMAT_ALAW:
|
|
pcm_format = SNDRV_PCM_FORMAT_A_LAW;
|
|
break;
|
|
case USB_AUDIO_FORMAT_MU_LAW:
|
|
pcm_format = SNDRV_PCM_FORMAT_MU_LAW;
|
|
break;
|
|
default:
|
|
snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting, format);
|
|
break;
|
|
}
|
|
return pcm_format;
|
|
}
|
|
|
|
|
|
/*
|
|
* parse the format descriptor and stores the possible sample rates
|
|
* on the audioformat table.
|
|
*
|
|
* @dev: usb device
|
|
* @fp: audioformat record
|
|
* @fmt: the format descriptor
|
|
* @offset: the start offset of descriptor pointing the rate type
|
|
* (7 for type I and II, 8 for type II)
|
|
*/
|
|
static int parse_audio_format_rates(snd_usb_audio_t *chip, struct audioformat *fp,
|
|
unsigned char *fmt, int offset)
|
|
{
|
|
int nr_rates = fmt[offset];
|
|
if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting);
|
|
return -1;
|
|
}
|
|
|
|
if (nr_rates) {
|
|
/*
|
|
* build the rate table and bitmap flags
|
|
*/
|
|
int r, idx, c;
|
|
/* this table corresponds to the SNDRV_PCM_RATE_XXX bit */
|
|
static unsigned int conv_rates[] = {
|
|
5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
|
|
64000, 88200, 96000, 176400, 192000
|
|
};
|
|
fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
|
|
if (fp->rate_table == NULL) {
|
|
snd_printk(KERN_ERR "cannot malloc\n");
|
|
return -1;
|
|
}
|
|
|
|
fp->nr_rates = nr_rates;
|
|
fp->rate_min = fp->rate_max = combine_triple(&fmt[8]);
|
|
for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
|
|
unsigned int rate = fp->rate_table[r] = combine_triple(&fmt[idx]);
|
|
if (rate < fp->rate_min)
|
|
fp->rate_min = rate;
|
|
else if (rate > fp->rate_max)
|
|
fp->rate_max = rate;
|
|
for (c = 0; c < (int)ARRAY_SIZE(conv_rates); c++) {
|
|
if (rate == conv_rates[c]) {
|
|
fp->rates |= (1 << c);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/* continuous rates */
|
|
fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
|
|
fp->rate_min = combine_triple(&fmt[offset + 1]);
|
|
fp->rate_max = combine_triple(&fmt[offset + 4]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* parse the format type I and III descriptors
|
|
*/
|
|
static int parse_audio_format_i(snd_usb_audio_t *chip, struct audioformat *fp,
|
|
int format, unsigned char *fmt)
|
|
{
|
|
int pcm_format;
|
|
|
|
if (fmt[3] == USB_FORMAT_TYPE_III) {
|
|
/* FIXME: the format type is really IECxxx
|
|
* but we give normal PCM format to get the existing
|
|
* apps working...
|
|
*/
|
|
pcm_format = SNDRV_PCM_FORMAT_S16_LE;
|
|
} else {
|
|
pcm_format = parse_audio_format_i_type(chip, fp, format, fmt);
|
|
if (pcm_format < 0)
|
|
return -1;
|
|
}
|
|
fp->format = pcm_format;
|
|
fp->channels = fmt[4];
|
|
if (fp->channels < 1) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
|
|
return -1;
|
|
}
|
|
return parse_audio_format_rates(chip, fp, fmt, 7);
|
|
}
|
|
|
|
/*
|
|
* prase the format type II descriptor
|
|
*/
|
|
static int parse_audio_format_ii(snd_usb_audio_t *chip, struct audioformat *fp,
|
|
int format, unsigned char *fmt)
|
|
{
|
|
int brate, framesize;
|
|
switch (format) {
|
|
case USB_AUDIO_FORMAT_AC3:
|
|
/* FIXME: there is no AC3 format defined yet */
|
|
// fp->format = SNDRV_PCM_FORMAT_AC3;
|
|
fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */
|
|
break;
|
|
case USB_AUDIO_FORMAT_MPEG:
|
|
fp->format = SNDRV_PCM_FORMAT_MPEG;
|
|
break;
|
|
default:
|
|
snd_printd(KERN_INFO "%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting, format);
|
|
fp->format = SNDRV_PCM_FORMAT_MPEG;
|
|
break;
|
|
}
|
|
fp->channels = 1;
|
|
brate = combine_word(&fmt[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
|
|
framesize = combine_word(&fmt[6]); /* fmt[6,7]: wSamplesPerFrame */
|
|
snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
|
|
fp->frame_size = framesize;
|
|
return parse_audio_format_rates(chip, fp, fmt, 8); /* fmt[8..] sample rates */
|
|
}
|
|
|
|
static int parse_audio_format(snd_usb_audio_t *chip, struct audioformat *fp,
|
|
int format, unsigned char *fmt, int stream)
|
|
{
|
|
int err;
|
|
|
|
switch (fmt[3]) {
|
|
case USB_FORMAT_TYPE_I:
|
|
case USB_FORMAT_TYPE_III:
|
|
err = parse_audio_format_i(chip, fp, format, fmt);
|
|
break;
|
|
case USB_FORMAT_TYPE_II:
|
|
err = parse_audio_format_ii(chip, fp, format, fmt);
|
|
break;
|
|
default:
|
|
snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
|
|
chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
|
|
return -1;
|
|
}
|
|
fp->fmt_type = fmt[3];
|
|
if (err < 0)
|
|
return err;
|
|
#if 1
|
|
/* FIXME: temporary hack for extigy/audigy 2 nx */
|
|
/* extigy apparently supports sample rates other than 48k
|
|
* but not in ordinary way. so we enable only 48k atm.
|
|
*/
|
|
if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
|
|
chip->usb_id == USB_ID(0x041e, 0x3020)) {
|
|
if (fmt[3] == USB_FORMAT_TYPE_I &&
|
|
fp->rates != SNDRV_PCM_RATE_48000 &&
|
|
fp->rates != SNDRV_PCM_RATE_96000)
|
|
return -1;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int parse_audio_endpoints(snd_usb_audio_t *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;
|
|
struct audioformat *fp;
|
|
unsigned char *fmt, *csep;
|
|
|
|
dev = chip->dev;
|
|
|
|
/* parse the interface's altsettings */
|
|
iface = usb_ifnum_to_if(dev, iface_no);
|
|
for (i = 0; i < iface->num_altsetting; i++) {
|
|
alts = &iface->altsetting[i];
|
|
altsd = get_iface_desc(alts);
|
|
/* skip invalid one */
|
|
if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
|
|
altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
|
|
(altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING &&
|
|
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;
|
|
|
|
/* get audio formats */
|
|
fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, AS_GENERAL);
|
|
if (!fmt) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : AS_GENERAL descriptor not found\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
if (fmt[0] < 7) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid AS_GENERAL desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
format = (fmt[6] << 8) | fmt[5]; /* remember the format value */
|
|
|
|
/* get format type */
|
|
fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, FORMAT_TYPE);
|
|
if (!fmt) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : no FORMAT_TYPE desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
if (fmt[0] < 8) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
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[0] < 7 || csep[2] != EP_GENERAL) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : no or invalid class specific endpoint descriptor\n",
|
|
dev->devnum, iface_no, altno);
|
|
continue;
|
|
}
|
|
|
|
fp = kmalloc(sizeof(*fp), GFP_KERNEL);
|
|
if (! fp) {
|
|
snd_printk(KERN_ERR "cannot malloc\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memset(fp, 0, sizeof(*fp));
|
|
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->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
|
|
if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
|
|
fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
|
|
* (fp->maxpacksize & 0x7ff);
|
|
fp->attributes = csep[3];
|
|
|
|
/* 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 &= ~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 */
|
|
/* doesn't set the sample rate attribute, but supports it */
|
|
fp->attributes |= 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 &= ~EP_ATTR_MASK;
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
fp->ep_attr |= EP_ATTR_ADAPTIVE;
|
|
else
|
|
fp->ep_attr |= EP_ATTR_SYNC;
|
|
break;
|
|
}
|
|
|
|
/* ok, let's parse further... */
|
|
if (parse_audio_format(chip, fp, format, fmt, stream) < 0) {
|
|
kfree(fp->rate_table);
|
|
kfree(fp);
|
|
continue;
|
|
}
|
|
|
|
snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint 0x%x\n", dev->devnum, iface_no, i, fp->endpoint);
|
|
err = 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);
|
|
init_usb_pitch(chip->dev, iface_no, alts, fp);
|
|
init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* disconnect streams
|
|
* called from snd_usb_audio_disconnect()
|
|
*/
|
|
static void snd_usb_stream_disconnect(struct list_head *head)
|
|
{
|
|
int idx;
|
|
snd_usb_stream_t *as;
|
|
snd_usb_substream_t *subs;
|
|
|
|
as = list_entry(head, snd_usb_stream_t, list);
|
|
for (idx = 0; idx < 2; idx++) {
|
|
subs = &as->substream[idx];
|
|
if (!subs->num_formats)
|
|
return;
|
|
release_substream_urbs(subs, 1);
|
|
subs->interface = -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* parse audio control descriptor and create pcm/midi streams
|
|
*/
|
|
static int snd_usb_create_streams(snd_usb_audio_t *chip, int ctrlif)
|
|
{
|
|
struct usb_device *dev = chip->dev;
|
|
struct usb_host_interface *host_iface;
|
|
struct usb_interface *iface;
|
|
unsigned char *p1;
|
|
int i, j;
|
|
|
|
/* find audiocontrol interface */
|
|
host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
|
|
if (!(p1 = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, NULL, HEADER))) {
|
|
snd_printk(KERN_ERR "cannot find HEADER\n");
|
|
return -EINVAL;
|
|
}
|
|
if (! p1[7] || p1[0] < 8 + p1[7]) {
|
|
snd_printk(KERN_ERR "invalid HEADER\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* parse all USB audio streaming interfaces
|
|
*/
|
|
for (i = 0; i < p1[7]; i++) {
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface_descriptor *altsd;
|
|
j = p1[8 + i];
|
|
iface = usb_ifnum_to_if(dev, j);
|
|
if (!iface) {
|
|
snd_printk(KERN_ERR "%d:%u:%d : does not exist\n",
|
|
dev->devnum, ctrlif, j);
|
|
continue;
|
|
}
|
|
if (usb_interface_claimed(iface)) {
|
|
snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, j);
|
|
continue;
|
|
}
|
|
alts = &iface->altsetting[0];
|
|
altsd = get_iface_desc(alts);
|
|
if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
|
|
altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
|
|
altsd->bInterfaceSubClass == USB_SUBCLASS_MIDI_STREAMING) {
|
|
if (snd_usb_create_midi_interface(chip, iface, NULL) < 0) {
|
|
snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", dev->devnum, ctrlif, j);
|
|
continue;
|
|
}
|
|
usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
|
|
continue;
|
|
}
|
|
if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
|
|
altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
|
|
altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING) {
|
|
snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", dev->devnum, ctrlif, j, altsd->bInterfaceClass);
|
|
/* skip non-supported classes */
|
|
continue;
|
|
}
|
|
if (! parse_audio_endpoints(chip, j)) {
|
|
usb_set_interface(dev, j, 0); /* reset the current interface */
|
|
usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* create a stream for an endpoint/altsetting without proper descriptors
|
|
*/
|
|
static int create_fixed_stream_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
struct audioformat *fp;
|
|
struct usb_host_interface *alts;
|
|
int stream, err;
|
|
int *rate_table = NULL;
|
|
|
|
fp = kmalloc(sizeof(*fp), GFP_KERNEL);
|
|
if (! fp) {
|
|
snd_printk(KERN_ERR "cannot malloc\n");
|
|
return -ENOMEM;
|
|
}
|
|
memcpy(fp, quirk->data, sizeof(*fp));
|
|
if (fp->nr_rates > 0) {
|
|
rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
|
|
if (!rate_table) {
|
|
kfree(fp);
|
|
return -ENOMEM;
|
|
}
|
|
memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
|
|
fp->rate_table = rate_table;
|
|
}
|
|
|
|
stream = (fp->endpoint & USB_DIR_IN)
|
|
? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
|
|
err = add_audio_endpoint(chip, stream, fp);
|
|
if (err < 0) {
|
|
kfree(fp);
|
|
kfree(rate_table);
|
|
return err;
|
|
}
|
|
if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
|
|
fp->altset_idx >= iface->num_altsetting) {
|
|
kfree(fp);
|
|
kfree(rate_table);
|
|
return -EINVAL;
|
|
}
|
|
alts = &iface->altsetting[fp->altset_idx];
|
|
usb_set_interface(chip->dev, fp->iface, 0);
|
|
init_usb_pitch(chip->dev, fp->iface, alts, fp);
|
|
init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* create a stream for an interface with proper descriptors
|
|
*/
|
|
static int create_standard_audio_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface_descriptor *altsd;
|
|
int err;
|
|
|
|
alts = &iface->altsetting[0];
|
|
altsd = get_iface_desc(alts);
|
|
err = parse_audio_endpoints(chip, altsd->bInterfaceNumber);
|
|
if (err < 0) {
|
|
snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
|
|
altsd->bInterfaceNumber, err);
|
|
return err;
|
|
}
|
|
/* reset the current interface */
|
|
usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Create a stream for an Edirol UA-700/UA-25 interface. The only way
|
|
* to detect the sample rate is by looking at wMaxPacketSize.
|
|
*/
|
|
static int create_ua700_ua25_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
static const struct audioformat ua_format = {
|
|
.format = SNDRV_PCM_FORMAT_S24_3LE,
|
|
.channels = 2,
|
|
.fmt_type = USB_FORMAT_TYPE_I,
|
|
.altsetting = 1,
|
|
.altset_idx = 1,
|
|
.rates = SNDRV_PCM_RATE_CONTINUOUS,
|
|
};
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface_descriptor *altsd;
|
|
struct audioformat *fp;
|
|
int stream, err;
|
|
|
|
/* both PCM and MIDI interfaces have 2 altsettings */
|
|
if (iface->num_altsetting != 2)
|
|
return -ENXIO;
|
|
alts = &iface->altsetting[1];
|
|
altsd = get_iface_desc(alts);
|
|
|
|
if (altsd->bNumEndpoints == 2) {
|
|
static const snd_usb_midi_endpoint_info_t ua700_ep = {
|
|
.out_cables = 0x0003,
|
|
.in_cables = 0x0003
|
|
};
|
|
static const snd_usb_audio_quirk_t ua700_quirk = {
|
|
.type = QUIRK_MIDI_FIXED_ENDPOINT,
|
|
.data = &ua700_ep
|
|
};
|
|
static const snd_usb_midi_endpoint_info_t ua25_ep = {
|
|
.out_cables = 0x0001,
|
|
.in_cables = 0x0001
|
|
};
|
|
static const snd_usb_audio_quirk_t ua25_quirk = {
|
|
.type = QUIRK_MIDI_FIXED_ENDPOINT,
|
|
.data = &ua25_ep
|
|
};
|
|
if (chip->usb_id == USB_ID(0x0582, 0x002b))
|
|
return snd_usb_create_midi_interface(chip, iface,
|
|
&ua700_quirk);
|
|
else
|
|
return snd_usb_create_midi_interface(chip, iface,
|
|
&ua25_quirk);
|
|
}
|
|
|
|
if (altsd->bNumEndpoints != 1)
|
|
return -ENXIO;
|
|
|
|
fp = kmalloc(sizeof(*fp), GFP_KERNEL);
|
|
if (!fp)
|
|
return -ENOMEM;
|
|
memcpy(fp, &ua_format, sizeof(*fp));
|
|
|
|
fp->iface = altsd->bInterfaceNumber;
|
|
fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
|
|
fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
|
|
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
|
|
|
|
switch (fp->maxpacksize) {
|
|
case 0x120:
|
|
fp->rate_max = fp->rate_min = 44100;
|
|
break;
|
|
case 0x138:
|
|
case 0x140:
|
|
fp->rate_max = fp->rate_min = 48000;
|
|
break;
|
|
case 0x258:
|
|
case 0x260:
|
|
fp->rate_max = fp->rate_min = 96000;
|
|
break;
|
|
default:
|
|
snd_printk(KERN_ERR "unknown sample rate\n");
|
|
kfree(fp);
|
|
return -ENXIO;
|
|
}
|
|
|
|
stream = (fp->endpoint & USB_DIR_IN)
|
|
? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
|
|
err = add_audio_endpoint(chip, stream, fp);
|
|
if (err < 0) {
|
|
kfree(fp);
|
|
return err;
|
|
}
|
|
usb_set_interface(chip->dev, fp->iface, 0);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Create a stream for an Edirol UA-1000 interface.
|
|
*/
|
|
static int create_ua1000_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
static const struct audioformat ua1000_format = {
|
|
.format = SNDRV_PCM_FORMAT_S32_LE,
|
|
.fmt_type = USB_FORMAT_TYPE_I,
|
|
.altsetting = 1,
|
|
.altset_idx = 1,
|
|
.attributes = 0,
|
|
.rates = SNDRV_PCM_RATE_CONTINUOUS,
|
|
};
|
|
struct usb_host_interface *alts;
|
|
struct usb_interface_descriptor *altsd;
|
|
struct audioformat *fp;
|
|
int stream, err;
|
|
|
|
if (iface->num_altsetting != 2)
|
|
return -ENXIO;
|
|
alts = &iface->altsetting[1];
|
|
altsd = get_iface_desc(alts);
|
|
if (alts->extralen != 11 || alts->extra[1] != CS_AUDIO_INTERFACE ||
|
|
altsd->bNumEndpoints != 1)
|
|
return -ENXIO;
|
|
|
|
fp = kmalloc(sizeof(*fp), GFP_KERNEL);
|
|
if (!fp)
|
|
return -ENOMEM;
|
|
memcpy(fp, &ua1000_format, sizeof(*fp));
|
|
|
|
fp->channels = alts->extra[4];
|
|
fp->iface = altsd->bInterfaceNumber;
|
|
fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
|
|
fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
|
|
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
|
|
fp->rate_max = fp->rate_min = combine_triple(&alts->extra[8]);
|
|
|
|
stream = (fp->endpoint & USB_DIR_IN)
|
|
? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
|
|
err = add_audio_endpoint(chip, stream, fp);
|
|
if (err < 0) {
|
|
kfree(fp);
|
|
return err;
|
|
}
|
|
/* FIXME: playback must be synchronized to capture */
|
|
usb_set_interface(chip->dev, fp->iface, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_create_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk);
|
|
|
|
/*
|
|
* handle the quirks for the contained interfaces
|
|
*/
|
|
static int create_composite_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
|
|
int err;
|
|
|
|
for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
|
|
iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
|
|
if (!iface)
|
|
continue;
|
|
if (quirk->ifnum != probed_ifnum &&
|
|
usb_interface_claimed(iface))
|
|
continue;
|
|
err = snd_usb_create_quirk(chip, iface, quirk);
|
|
if (err < 0)
|
|
return err;
|
|
if (quirk->ifnum != probed_ifnum)
|
|
usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ignore_interface_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* boot quirks
|
|
*/
|
|
|
|
#define EXTIGY_FIRMWARE_SIZE_OLD 794
|
|
#define EXTIGY_FIRMWARE_SIZE_NEW 483
|
|
|
|
static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
|
|
{
|
|
struct usb_host_config *config = dev->actconfig;
|
|
int err;
|
|
|
|
if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
|
|
le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
|
|
snd_printdd("sending Extigy boot sequence...\n");
|
|
/* Send message to force it to reconnect with full interface. */
|
|
err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
|
|
0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
|
|
if (err < 0) snd_printdd("error sending boot message: %d\n", err);
|
|
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
|
|
&dev->descriptor, sizeof(dev->descriptor));
|
|
config = dev->actconfig;
|
|
if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
|
|
err = usb_reset_configuration(dev);
|
|
if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
|
|
snd_printdd("extigy_boot: new boot length = %d\n",
|
|
le16_to_cpu(get_cfg_desc(config)->wTotalLength));
|
|
return -ENODEV; /* quit this anyway */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
|
|
{
|
|
u8 buf = 1;
|
|
|
|
snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
|
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
|
|
0, 0, &buf, 1, 1000);
|
|
if (buf == 0) {
|
|
snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
|
|
1, 2000, NULL, 0, 1000);
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* audio-interface quirks
|
|
*
|
|
* returns zero if no standard audio/MIDI parsing is needed.
|
|
* returns a postive value if standard audio/midi interfaces are parsed
|
|
* after this.
|
|
* returns a negative value at error.
|
|
*/
|
|
static int snd_usb_create_quirk(snd_usb_audio_t *chip,
|
|
struct usb_interface *iface,
|
|
const snd_usb_audio_quirk_t *quirk)
|
|
{
|
|
typedef int (*quirk_func_t)(snd_usb_audio_t *, struct usb_interface *,
|
|
const snd_usb_audio_quirk_t *);
|
|
static const quirk_func_t quirk_funcs[] = {
|
|
[QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
|
|
[QUIRK_COMPOSITE] = create_composite_quirk,
|
|
[QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_RAW] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface,
|
|
[QUIRK_MIDI_MIDITECH] = snd_usb_create_midi_interface,
|
|
[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
|
|
[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
|
|
[QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk,
|
|
[QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk,
|
|
};
|
|
|
|
if (quirk->type < QUIRK_TYPE_COUNT) {
|
|
return quirk_funcs[quirk->type](chip, iface, quirk);
|
|
} else {
|
|
snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
|
|
return -ENXIO;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* common proc files to show the usb device info
|
|
*/
|
|
static void proc_audio_usbbus_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
|
|
{
|
|
snd_usb_audio_t *chip = entry->private_data;
|
|
if (! chip->shutdown)
|
|
snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
|
|
}
|
|
|
|
static void proc_audio_usbid_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
|
|
{
|
|
snd_usb_audio_t *chip = entry->private_data;
|
|
if (! chip->shutdown)
|
|
snd_iprintf(buffer, "%04x:%04x\n",
|
|
USB_ID_VENDOR(chip->usb_id),
|
|
USB_ID_PRODUCT(chip->usb_id));
|
|
}
|
|
|
|
static void snd_usb_audio_create_proc(snd_usb_audio_t *chip)
|
|
{
|
|
snd_info_entry_t *entry;
|
|
if (! snd_card_proc_new(chip->card, "usbbus", &entry))
|
|
snd_info_set_text_ops(entry, chip, 1024, proc_audio_usbbus_read);
|
|
if (! snd_card_proc_new(chip->card, "usbid", &entry))
|
|
snd_info_set_text_ops(entry, chip, 1024, proc_audio_usbid_read);
|
|
}
|
|
|
|
/*
|
|
* free the chip instance
|
|
*
|
|
* here we have to do not much, since pcm and controls are already freed
|
|
*
|
|
*/
|
|
|
|
static int snd_usb_audio_free(snd_usb_audio_t *chip)
|
|
{
|
|
kfree(chip);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_audio_dev_free(snd_device_t *device)
|
|
{
|
|
snd_usb_audio_t *chip = device->device_data;
|
|
return snd_usb_audio_free(chip);
|
|
}
|
|
|
|
|
|
/*
|
|
* create a chip instance and set its names.
|
|
*/
|
|
static int snd_usb_audio_create(struct usb_device *dev, int idx,
|
|
const snd_usb_audio_quirk_t *quirk,
|
|
snd_usb_audio_t **rchip)
|
|
{
|
|
snd_card_t *card;
|
|
snd_usb_audio_t *chip;
|
|
int err, len;
|
|
char component[14];
|
|
static snd_device_ops_t ops = {
|
|
.dev_free = snd_usb_audio_dev_free,
|
|
};
|
|
|
|
*rchip = NULL;
|
|
|
|
if (snd_usb_get_speed(dev) != USB_SPEED_FULL &&
|
|
snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
|
|
snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
|
|
return -ENXIO;
|
|
}
|
|
|
|
card = snd_card_new(index[idx], id[idx], THIS_MODULE, 0);
|
|
if (card == NULL) {
|
|
snd_printk(KERN_ERR "cannot create card instance %d\n", idx);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
|
|
if (! chip) {
|
|
snd_card_free(card);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
chip->index = idx;
|
|
chip->dev = dev;
|
|
chip->card = card;
|
|
chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
|
|
le16_to_cpu(dev->descriptor.idProduct));
|
|
INIT_LIST_HEAD(&chip->pcm_list);
|
|
INIT_LIST_HEAD(&chip->midi_list);
|
|
INIT_LIST_HEAD(&chip->mixer_list);
|
|
|
|
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
|
|
snd_usb_audio_free(chip);
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
strcpy(card->driver, "USB-Audio");
|
|
sprintf(component, "USB%04x:%04x",
|
|
USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
|
|
snd_component_add(card, component);
|
|
|
|
/* retrieve the device string as shortname */
|
|
if (quirk && quirk->product_name) {
|
|
strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
|
|
} else {
|
|
if (!dev->descriptor.iProduct ||
|
|
usb_string(dev, dev->descriptor.iProduct,
|
|
card->shortname, sizeof(card->shortname)) <= 0) {
|
|
/* no name available from anywhere, so use ID */
|
|
sprintf(card->shortname, "USB Device %#04x:%#04x",
|
|
USB_ID_VENDOR(chip->usb_id),
|
|
USB_ID_PRODUCT(chip->usb_id));
|
|
}
|
|
}
|
|
|
|
/* retrieve the vendor and device strings as longname */
|
|
if (quirk && quirk->vendor_name) {
|
|
len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
|
|
} else {
|
|
if (dev->descriptor.iManufacturer)
|
|
len = usb_string(dev, dev->descriptor.iManufacturer,
|
|
card->longname, sizeof(card->longname));
|
|
else
|
|
len = 0;
|
|
/* we don't really care if there isn't any vendor string */
|
|
}
|
|
if (len > 0)
|
|
strlcat(card->longname, " ", sizeof(card->longname));
|
|
|
|
strlcat(card->longname, card->shortname, sizeof(card->longname));
|
|
|
|
len = strlcat(card->longname, " at ", sizeof(card->longname));
|
|
|
|
if (len < sizeof(card->longname))
|
|
usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);
|
|
|
|
strlcat(card->longname,
|
|
snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" : ", high speed",
|
|
sizeof(card->longname));
|
|
|
|
snd_usb_audio_create_proc(chip);
|
|
|
|
*rchip = chip;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* probe the active usb device
|
|
*
|
|
* note that this can be called multiple times per a device, when it
|
|
* includes multiple audio control interfaces.
|
|
*
|
|
* thus we check the usb device pointer and creates the card instance
|
|
* only at the first time. the successive calls of this function will
|
|
* append the pcm interface to the corresponding card.
|
|
*/
|
|
static void *snd_usb_audio_probe(struct usb_device *dev,
|
|
struct usb_interface *intf,
|
|
const struct usb_device_id *usb_id)
|
|
{
|
|
struct usb_host_config *config = dev->actconfig;
|
|
const snd_usb_audio_quirk_t *quirk = (const snd_usb_audio_quirk_t *)usb_id->driver_info;
|
|
int i, err;
|
|
snd_usb_audio_t *chip;
|
|
struct usb_host_interface *alts;
|
|
int ifnum;
|
|
u32 id;
|
|
|
|
alts = &intf->altsetting[0];
|
|
ifnum = get_iface_desc(alts)->bInterfaceNumber;
|
|
id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
|
|
le16_to_cpu(dev->descriptor.idProduct));
|
|
|
|
if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
|
|
goto __err_val;
|
|
|
|
/* SB Extigy needs special boot-up sequence */
|
|
/* if more models come, this will go to the quirk list. */
|
|
if (id == USB_ID(0x041e, 0x3000)) {
|
|
if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
|
|
goto __err_val;
|
|
config = dev->actconfig;
|
|
}
|
|
/* SB Audigy 2 NX needs its own boot-up magic, too */
|
|
if (id == USB_ID(0x041e, 0x3020)) {
|
|
if (snd_usb_audigy2nx_boot_quirk(dev) < 0)
|
|
goto __err_val;
|
|
}
|
|
|
|
/*
|
|
* found a config. now register to ALSA
|
|
*/
|
|
|
|
/* check whether it's already registered */
|
|
chip = NULL;
|
|
down(®ister_mutex);
|
|
for (i = 0; i < SNDRV_CARDS; i++) {
|
|
if (usb_chip[i] && usb_chip[i]->dev == dev) {
|
|
if (usb_chip[i]->shutdown) {
|
|
snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n");
|
|
goto __error;
|
|
}
|
|
chip = usb_chip[i];
|
|
break;
|
|
}
|
|
}
|
|
if (! chip) {
|
|
/* it's a fresh one.
|
|
* now look for an empty slot and create a new card instance
|
|
*/
|
|
/* first, set the current configuration for this device */
|
|
if (usb_reset_configuration(dev) < 0) {
|
|
snd_printk(KERN_ERR "cannot reset configuration (value 0x%x)\n", get_cfg_desc(config)->bConfigurationValue);
|
|
goto __error;
|
|
}
|
|
for (i = 0; i < SNDRV_CARDS; i++)
|
|
if (enable[i] && ! usb_chip[i] &&
|
|
(vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
|
|
(pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
|
|
if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
|
|
goto __error;
|
|
}
|
|
snd_card_set_dev(chip->card, &intf->dev);
|
|
break;
|
|
}
|
|
if (! chip) {
|
|
snd_printk(KERN_ERR "no available usb audio device\n");
|
|
goto __error;
|
|
}
|
|
}
|
|
|
|
err = 1; /* continue */
|
|
if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {
|
|
/* need some special handlings */
|
|
if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0)
|
|
goto __error;
|
|
}
|
|
|
|
if (err > 0) {
|
|
/* create normal USB audio interfaces */
|
|
if (snd_usb_create_streams(chip, ifnum) < 0 ||
|
|
snd_usb_create_mixer(chip, ifnum) < 0) {
|
|
goto __error;
|
|
}
|
|
}
|
|
|
|
/* we are allowed to call snd_card_register() many times */
|
|
if (snd_card_register(chip->card) < 0) {
|
|
goto __error;
|
|
}
|
|
|
|
usb_chip[chip->index] = chip;
|
|
chip->num_interfaces++;
|
|
up(®ister_mutex);
|
|
return chip;
|
|
|
|
__error:
|
|
if (chip && !chip->num_interfaces)
|
|
snd_card_free(chip->card);
|
|
up(®ister_mutex);
|
|
__err_val:
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* we need to take care of counter, since disconnection can be called also
|
|
* many times as well as usb_audio_probe().
|
|
*/
|
|
static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
|
|
{
|
|
snd_usb_audio_t *chip;
|
|
snd_card_t *card;
|
|
struct list_head *p;
|
|
|
|
if (ptr == (void *)-1L)
|
|
return;
|
|
|
|
chip = ptr;
|
|
card = chip->card;
|
|
down(®ister_mutex);
|
|
chip->shutdown = 1;
|
|
chip->num_interfaces--;
|
|
if (chip->num_interfaces <= 0) {
|
|
snd_card_disconnect(card);
|
|
/* release the pcm resources */
|
|
list_for_each(p, &chip->pcm_list) {
|
|
snd_usb_stream_disconnect(p);
|
|
}
|
|
/* release the midi resources */
|
|
list_for_each(p, &chip->midi_list) {
|
|
snd_usbmidi_disconnect(p);
|
|
}
|
|
/* release mixer resources */
|
|
list_for_each(p, &chip->mixer_list) {
|
|
snd_usb_mixer_disconnect(p);
|
|
}
|
|
usb_chip[chip->index] = NULL;
|
|
up(®ister_mutex);
|
|
snd_card_free(card);
|
|
} else {
|
|
up(®ister_mutex);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* new 2.5 USB kernel API
|
|
*/
|
|
static int usb_audio_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
void *chip;
|
|
chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
|
|
if (chip) {
|
|
dev_set_drvdata(&intf->dev, chip);
|
|
return 0;
|
|
} else
|
|
return -EIO;
|
|
}
|
|
|
|
static void usb_audio_disconnect(struct usb_interface *intf)
|
|
{
|
|
snd_usb_audio_disconnect(interface_to_usbdev(intf),
|
|
dev_get_drvdata(&intf->dev));
|
|
}
|
|
|
|
|
|
static int __init snd_usb_audio_init(void)
|
|
{
|
|
if (nrpacks < MIN_PACKS_URB || nrpacks > MAX_PACKS) {
|
|
printk(KERN_WARNING "invalid nrpacks value.\n");
|
|
return -EINVAL;
|
|
}
|
|
usb_register(&usb_audio_driver);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void __exit snd_usb_audio_cleanup(void)
|
|
{
|
|
usb_deregister(&usb_audio_driver);
|
|
}
|
|
|
|
module_init(snd_usb_audio_init);
|
|
module_exit(snd_usb_audio_cleanup);
|