[linux.git] / sound / usb / quirks.c

/*
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/init.h>
#include <linux/usb.h>
#include <linux/usb/audio.h>

#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>

#include "usbaudio.h"
#include "card.h"
#include "usbmixer.h"
#include "midi.h"
#include "quirks.h"
#include "helper.h"
#include "endpoint.h"
#include "pcm.h"

/*
 * handle the quirks for the contained interfaces
 */
static int create_composite_quirk(struct snd_usb_audio *chip,
				  struct usb_interface *iface,
				  struct usb_driver *driver,
				  const struct snd_usb_audio_quirk *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, driver, quirk);
		if (err < 0)
			return err;
		if (quirk->ifnum != probed_ifnum)
			usb_driver_claim_interface(driver, iface, (void *)-1L);
	}
	return 0;
}

static int ignore_interface_quirk(struct snd_usb_audio *chip,
				  struct usb_interface *iface,
				  struct usb_driver *driver,
				  const struct snd_usb_audio_quirk *quirk)
{
	return 0;
}


/*
 * Allow alignment on audio sub-slot (channel samples) rather than
 * on audio slots (audio frames)
 */
static int create_align_transfer_quirk(struct snd_usb_audio *chip,
				       struct usb_interface *iface,
				       struct usb_driver *driver,
				       const struct snd_usb_audio_quirk *quirk)
{
	chip->txfr_quirk = 1;
	return 1;	/* Continue with creating streams and mixer */
}

static int create_any_midi_quirk(struct snd_usb_audio *chip,
				 struct usb_interface *intf,
				 struct usb_driver *driver,
				 const struct snd_usb_audio_quirk *quirk)
{
	return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
}

/*
 * create a stream for an interface with proper descriptors
 */
static int create_standard_audio_quirk(struct snd_usb_audio *chip,
				       struct usb_interface *iface,
				       struct usb_driver *driver,
				       const struct snd_usb_audio_quirk *quirk)
{
	struct usb_host_interface *alts;
	struct usb_interface_descriptor *altsd;
	int err;

	alts = &iface->altsetting[0];
	altsd = get_iface_desc(alts);
	err = snd_usb_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 endpoint/altsetting without proper descriptors
 */
static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
				     struct usb_interface *iface,
				     struct usb_driver *driver,
				     const struct snd_usb_audio_quirk *quirk)
{
	struct audioformat *fp;
	struct usb_host_interface *alts;
	int stream, err;
	unsigned *rate_table = NULL;

	fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
	if (! fp) {
		snd_printk(KERN_ERR "cannot memdup\n");
		return -ENOMEM;
	}
	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 = snd_usb_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];
	fp->datainterval = snd_usb_parse_datainterval(chip, alts);
	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
	usb_set_interface(chip->dev, fp->iface, 0);
	snd_usb_init_pitch(chip->dev, fp->iface, alts, fp);
	snd_usb_init_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
	return 0;
}

/*
 * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.  
 * The only way to detect the sample rate is by looking at wMaxPacketSize.
 */
static int create_uaxx_quirk(struct snd_usb_audio *chip,
			     struct usb_interface *iface,
			     struct usb_driver *driver,
			     const struct snd_usb_audio_quirk *quirk)
{
	static const struct audioformat ua_format = {
		.format = SNDRV_PCM_FORMAT_S24_3LE,
		.channels = 2,
		.fmt_type = UAC_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 or more altsettings */
	if (iface->num_altsetting < 2)
		return -ENXIO;
	alts = &iface->altsetting[1];
	altsd = get_iface_desc(alts);

	if (altsd->bNumEndpoints == 2) {
		static const struct snd_usb_midi_endpoint_info ua700_ep = {
			.out_cables = 0x0003,
			.in_cables  = 0x0003
		};
		static const struct snd_usb_audio_quirk ua700_quirk = {
			.type = QUIRK_MIDI_FIXED_ENDPOINT,
			.data = &ua700_ep
		};
		static const struct snd_usb_midi_endpoint_info uaxx_ep = {
			.out_cables = 0x0001,
			.in_cables  = 0x0001
		};
		static const struct snd_usb_audio_quirk uaxx_quirk = {
			.type = QUIRK_MIDI_FIXED_ENDPOINT,
			.data = &uaxx_ep
		};
		const struct snd_usb_audio_quirk *quirk =
			chip->usb_id == USB_ID(0x0582, 0x002b)
			? &ua700_quirk : &uaxx_quirk;
		return snd_usbmidi_create(chip->card, iface,
					  &chip->midi_list, 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->datainterval = 0;
	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 = snd_usb_add_audio_endpoint(chip, stream, fp);
	if (err < 0) {
		kfree(fp);
		return err;
	}
	usb_set_interface(chip->dev, fp->iface, 0);
	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.
 */
int snd_usb_create_quirk(struct snd_usb_audio *chip,
			 struct usb_interface *iface,
			 struct usb_driver *driver,
			 const struct snd_usb_audio_quirk *quirk)
{
	typedef int (*quirk_func_t)(struct snd_usb_audio *,
				    struct usb_interface *,
				    struct usb_driver *,
				    const struct snd_usb_audio_quirk *);
	static const quirk_func_t quirk_funcs[] = {
		[QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
		[QUIRK_COMPOSITE] = create_composite_quirk,
		[QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
		[QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
		[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
		[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
		[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
		[QUIRK_MIDI_FASTLANE] = create_any_midi_quirk,
		[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
		[QUIRK_MIDI_CME] = create_any_midi_quirk,
		[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
		[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
		[QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
		[QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk
	};

	if (quirk->type < QUIRK_TYPE_COUNT) {
		return quirk_funcs[quirk->type](chip, iface, driver, quirk);
	} else {
		snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
		return -ENXIO;
	}
}

/*
 * 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;
}

/*
 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
 * documented in the device's data sheet.
 */
static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
{
	u8 buf[4];
	buf[0] = 0x20;
	buf[1] = value & 0xff;
	buf[2] = (value >> 8) & 0xff;
	buf[3] = reg;
	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
			       USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
			       0, 0, &buf, 4, 1000);
}

static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
{
	/*
	 * Enable line-out driver mode, set headphone source to front
	 * channels, enable stereo mic.
	 */
	return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
}

/*
 * C-Media CM6206 is based on CM106 with two additional
 * registers that are not documented in the data sheet.
 * Values here are chosen based on sniffing USB traffic
 * under Windows.
 */
static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
{
	int err, reg;
	int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};

	for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
		err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
		if (err < 0)
			return err;
	}

	return err;
}

/*
 * This call will put the synth in "USB send" mode, i.e it will send MIDI
 * messages through USB (this is disabled at startup). The synth will
 * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
 * sign on its LCD. Values here are chosen based on sniffing USB traffic
 * under Windows.
 */
static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
{
	int err, actual_length;

	/* "midi send" enable */
	static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };

	void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
			ARRAY_SIZE(seq), &actual_length, 1000);
	kfree(buf);
	if (err < 0)
		return err;

	return 0;
}

/*
 * Setup quirks
 */
#define AUDIOPHILE_SET			0x01 /* if set, parse device_setup */
#define AUDIOPHILE_SET_DTS              0x02 /* if set, enable DTS Digital Output */
#define AUDIOPHILE_SET_96K              0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
#define AUDIOPHILE_SET_24B		0x08 /* 24bits sample if set, 16bits otherwise */
#define AUDIOPHILE_SET_DI		0x10 /* if set, enable Digital Input */
#define AUDIOPHILE_SET_MASK		0x1F /* bit mask for setup value */
#define AUDIOPHILE_SET_24B_48K_DI	0x19 /* value for 24bits+48KHz+Digital Input */
#define AUDIOPHILE_SET_24B_48K_NOTDI	0x09 /* value for 24bits+48KHz+No Digital Input */
#define AUDIOPHILE_SET_16B_48K_DI	0x11 /* value for 16bits+48KHz+Digital Input */
#define AUDIOPHILE_SET_16B_48K_NOTDI	0x01 /* value for 16bits+48KHz+No Digital Input */

static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
					 int iface,
					 int altno)
{
	/* Reset ALL ifaces to 0 altsetting.
	 * Call it for every possible altsetting of every interface.
	 */
	usb_set_interface(chip->dev, iface, 0);

	if (chip->setup & AUDIOPHILE_SET) {
		if ((chip->setup & AUDIOPHILE_SET_DTS)
		    && altno != 6)
			return 1; /* skip this altsetting */
		if ((chip->setup & AUDIOPHILE_SET_96K)
		    && altno != 1)
			return 1; /* skip this altsetting */
		if ((chip->setup & AUDIOPHILE_SET_MASK) ==
		    AUDIOPHILE_SET_24B_48K_DI && altno != 2)
			return 1; /* skip this altsetting */
		if ((chip->setup & AUDIOPHILE_SET_MASK) ==
		    AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
			return 1; /* skip this altsetting */
		if ((chip->setup & AUDIOPHILE_SET_MASK) ==
		    AUDIOPHILE_SET_16B_48K_DI && altno != 4)
			return 1; /* skip this altsetting */
		if ((chip->setup & AUDIOPHILE_SET_MASK) ==
		    AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
			return 1; /* skip this altsetting */
	}

	return 0; /* keep this altsetting */
}

int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
				  int iface,
				  int altno)
{
	/* audiophile usb: skip altsets incompatible with device_setup */
	if (chip->usb_id == USB_ID(0x0763, 0x2003))
		return audiophile_skip_setting_quirk(chip, iface, altno);

	return 0;
}

int snd_usb_apply_boot_quirk(struct usb_device *dev,
			     struct usb_interface *intf,
			     const struct snd_usb_audio_quirk *quirk)
{
	u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
			le16_to_cpu(dev->descriptor.idProduct));

	/* SB Extigy needs special boot-up sequence */
	/* if more models come, this will go to the quirk list. */
	if (id == USB_ID(0x041e, 0x3000))
		return snd_usb_extigy_boot_quirk(dev, intf);

	/* SB Audigy 2 NX needs its own boot-up magic, too */
	if (id == USB_ID(0x041e, 0x3020))
		return snd_usb_audigy2nx_boot_quirk(dev);

	/* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
	if (id == USB_ID(0x10f5, 0x0200))
		return snd_usb_cm106_boot_quirk(dev);

	/* C-Media CM6206 / CM106-Like Sound Device */
	if (id == USB_ID(0x0d8c, 0x0102))
		return snd_usb_cm6206_boot_quirk(dev);

	/* Access Music VirusTI Desktop */
	if (id == USB_ID(0x133e, 0x0815))
		return snd_usb_accessmusic_boot_quirk(dev);

	return 0;
}

/*
 * check if the device uses big-endian samples
 */
int snd_usb_is_big_endian_format(struct snd_usb_audio *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 */
		if (chip->setup == 0x00 ||
		    fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
			return 1;
	}
	return 0;
}

/*
 * For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device,
 * not for interface.
 */

enum {
	EMU_QUIRK_SR_44100HZ = 0,
	EMU_QUIRK_SR_48000HZ,
	EMU_QUIRK_SR_88200HZ,
	EMU_QUIRK_SR_96000HZ,
	EMU_QUIRK_SR_176400HZ,
	EMU_QUIRK_SR_192000HZ
};

static void set_format_emu_quirk(struct snd_usb_substream *subs,
				 struct audioformat *fmt)
{
	unsigned char emu_samplerate_id = 0;

	/* When capture is active
	 * sample rate shouldn't be changed
	 * by playback substream
	 */
	if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
		if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
			return;
	}

	switch (fmt->rate_min) {
	case 48000:
		emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
		break;
	case 88200:
		emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
		break;
	case 96000:
		emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
		break;
	case 176400:
		emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
		break;
	case 192000:
		emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
		break;
	default:
		emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
		break;
	}
	snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
}

void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
			      struct audioformat *fmt)
{
	switch (subs->stream->chip->usb_id) {
	case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
	case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
	case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
		set_format_emu_quirk(subs, fmt);
		break;
	}
}
Commit	Line	Data
e5779998 DM	1	/*
	2	* This program is free software; you can redistribute it and/or modify
	3	* it under the terms of the GNU General Public License as published by
	4	* the Free Software Foundation; either version 2 of the License, or
	5	* (at your option) any later version.
	6	*
	7	* This program is distributed in the hope that it will be useful,
	8	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	9	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	10	* GNU General Public License for more details.
	11	*
	12	* You should have received a copy of the GNU General Public License
	13	* along with this program; if not, write to the Free Software
	14	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	15	*/
	16
	17	#include <linux/init.h>
	18	#include <linux/usb.h>
	19	#include <linux/usb/audio.h>
	20
	21	#include <sound/core.h>
	22	#include <sound/info.h>
	23	#include <sound/pcm.h>
	24
	25	#include "usbaudio.h"
	26	#include "card.h"
	27	#include "usbmixer.h"
	28	#include "midi.h"
	29	#include "quirks.h"
	30	#include "helper.h"
	31	#include "endpoint.h"
	32	#include "pcm.h"
	33
	34	/*
	35	* handle the quirks for the contained interfaces
	36	*/
	37	static int create_composite_quirk(struct snd_usb_audio *chip,
	38	struct usb_interface *iface,
	39	struct usb_driver *driver,
	40	const struct snd_usb_audio_quirk *quirk)
	41	{
	42	int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
	43	int err;
	44
	45	for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
	46	iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
	47	if (!iface)
	48	continue;
	49	if (quirk->ifnum != probed_ifnum &&
	50	usb_interface_claimed(iface))
	51	continue;
	52	err = snd_usb_create_quirk(chip, iface, driver, quirk);
	53	if (err < 0)
	54	return err;
	55	if (quirk->ifnum != probed_ifnum)
	56	usb_driver_claim_interface(driver, iface, (void *)-1L);
	57	}
	58	return 0;
	59	}
	60
	61	static int ignore_interface_quirk(struct snd_usb_audio *chip,
	62	struct usb_interface *iface,
	63	struct usb_driver *driver,
	64	const struct snd_usb_audio_quirk *quirk)
65	{
66	return 0;
67	}
68
69
70	/*
71	* Allow alignment on audio sub-slot (channel samples) rather than
72	* on audio slots (audio frames)
73	*/
74	static int create_align_transfer_quirk(struct snd_usb_audio *chip,
75	struct usb_interface *iface,
76	struct usb_driver *driver,
77	const struct snd_usb_audio_quirk *quirk)
78	{
79	chip->txfr_quirk = 1;
80	return 1; /* Continue with creating streams and mixer */
81	}
82
83	static int create_any_midi_quirk(struct snd_usb_audio *chip,
84	struct usb_interface *intf,
85	struct usb_driver *driver,
86	const struct snd_usb_audio_quirk *quirk)
87	{
88	return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
89	}
90
91	/*
92	* create a stream for an interface with proper descriptors
93	*/
94	static int create_standard_audio_quirk(struct snd_usb_audio *chip,
95	struct usb_interface *iface,
96	struct usb_driver *driver,
97	const struct snd_usb_audio_quirk *quirk)
98	{
99	struct usb_host_interface *alts;
100	struct usb_interface_descriptor *altsd;
101	int err;
102
103	alts = &iface->altsetting[0];
104	altsd = get_iface_desc(alts);
105	err = snd_usb_parse_audio_endpoints(chip, altsd->bInterfaceNumber);
106	if (err < 0) {
107	snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
108	altsd->bInterfaceNumber, err);
109	return err;
110	}
111	/* reset the current interface */
112	usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
113	return 0;
114	}
115
116	/*
117	* create a stream for an endpoint/altsetting without proper descriptors
118	*/
119	static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
120	struct usb_interface *iface,
121	struct usb_driver *driver,
122	const struct snd_usb_audio_quirk *quirk)
123	{
124	struct audioformat *fp;
125	struct usb_host_interface *alts;
126	int stream, err;
127	unsigned *rate_table = NULL;
128
129	fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
130	if (! fp) {
131	snd_printk(KERN_ERR "cannot memdup\n");
132	return -ENOMEM;
133	}
134	if (fp->nr_rates > 0) {
135	rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
136	if (!rate_table) {
137	kfree(fp);
138	return -ENOMEM;
139	}
140	memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
141	fp->rate_table = rate_table;
142	}
143
144	stream = (fp->endpoint & USB_DIR_IN)
145	? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
146	err = snd_usb_add_audio_endpoint(chip, stream, fp);
147	if (err < 0) {
148	kfree(fp);
149	kfree(rate_table);
150	return err;
151	}
152	if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber \|\|
153	fp->altset_idx >= iface->num_altsetting) {
154	kfree(fp);
155	kfree(rate_table);
156	return -EINVAL;
157	}
158	alts = &iface->altsetting[fp->altset_idx];
159	fp->datainterval = snd_usb_parse_datainterval(chip, alts);
160	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
161	usb_set_interface(chip->dev, fp->iface, 0);
162	snd_usb_init_pitch(chip->dev, fp->iface, alts, fp);
163	snd_usb_init_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
164	return 0;
165	}
166
167	/*
168	* Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
169	* The only way to detect the sample rate is by looking at wMaxPacketSize.
170	*/
171	static int create_uaxx_quirk(struct snd_usb_audio *chip,
172	struct usb_interface *iface,
173	struct usb_driver *driver,
174	const struct snd_usb_audio_quirk *quirk)
175	{
176	static const struct audioformat ua_format = {
177	.format = SNDRV_PCM_FORMAT_S24_3LE,
178	.channels = 2,
179	.fmt_type = UAC_FORMAT_TYPE_I,
180	.altsetting = 1,
181	.altset_idx = 1,
182	.rates = SNDRV_PCM_RATE_CONTINUOUS,
183	};
184	struct usb_host_interface *alts;
185	struct usb_interface_descriptor *altsd;
186	struct audioformat *fp;
187	int stream, err;
188
189	/* both PCM and MIDI interfaces have 2 or more altsettings */
190	if (iface->num_altsetting < 2)
191	return -ENXIO;
192	alts = &iface->altsetting[1];
193	altsd = get_iface_desc(alts);
194
195	if (altsd->bNumEndpoints == 2) {
196	static const struct snd_usb_midi_endpoint_info ua700_ep = {
197	.out_cables = 0x0003,
198	.in_cables = 0x0003
199	};
200	static const struct snd_usb_audio_quirk ua700_quirk = {
201	.type = QUIRK_MIDI_FIXED_ENDPOINT,
202	.data = &ua700_ep
203	};
204	static const struct snd_usb_midi_endpoint_info uaxx_ep = {
205	.out_cables = 0x0001,
206	.in_cables = 0x0001
207	};
208	static const struct snd_usb_audio_quirk uaxx_quirk = {
209	.type = QUIRK_MIDI_FIXED_ENDPOINT,
210	.data = &uaxx_ep
211	};
212	const struct snd_usb_audio_quirk *quirk =
213	chip->usb_id == USB_ID(0x0582, 0x002b)
214	? &ua700_quirk : &uaxx_quirk;
215	return snd_usbmidi_create(chip->card, iface,
216	&chip->midi_list, quirk);
217	}
218
219	if (altsd->bNumEndpoints != 1)
220	return -ENXIO;
221
222	fp = kmalloc(sizeof(*fp), GFP_KERNEL);
223	if (!fp)
224	return -ENOMEM;
225	memcpy(fp, &ua_format, sizeof(*fp));
226
227	fp->iface = altsd->bInterfaceNumber;
228	fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
229	fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
230	fp->datainterval = 0;
231	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
232
233	switch (fp->maxpacksize) {
234	case 0x120:
235	fp->rate_max = fp->rate_min = 44100;
236	break;
237	case 0x138:
238	case 0x140:
239	fp->rate_max = fp->rate_min = 48000;
240	break;
241	case 0x258:
242	case 0x260:
243	fp->rate_max = fp->rate_min = 96000;
244	break;
245	default:
246	snd_printk(KERN_ERR "unknown sample rate\n");
247	kfree(fp);
248	return -ENXIO;
249	}
250
251	stream = (fp->endpoint & USB_DIR_IN)
252	? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
253	err = snd_usb_add_audio_endpoint(chip, stream, fp);
254	if (err < 0) {
255	kfree(fp);
256	return err;
257	}
258	usb_set_interface(chip->dev, fp->iface, 0);
259	return 0;
260	}
261
262	/*
263	* audio-interface quirks
264	*
265	* returns zero if no standard audio/MIDI parsing is needed.
266	* returns a postive value if standard audio/midi interfaces are parsed
267	* after this.
268	* returns a negative value at error.
269	*/
270	int snd_usb_create_quirk(struct snd_usb_audio *chip,
271	struct usb_interface *iface,
272	struct usb_driver *driver,
273	const struct snd_usb_audio_quirk *quirk)
274	{
275	typedef int (quirk_func_t)(struct snd_usb_audio ,
276	struct usb_interface *,
277	struct usb_driver *,
278	const struct snd_usb_audio_quirk *);
279	static const quirk_func_t quirk_funcs[] = {
280	[QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
281	[QUIRK_COMPOSITE] = create_composite_quirk,
282	[QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
283	[QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
284	[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
285	[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
286	[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
287	[QUIRK_MIDI_FASTLANE] = create_any_midi_quirk,
288	[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
289	[QUIRK_MIDI_CME] = create_any_midi_quirk,
290	[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
291	[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
292	[QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
293	[QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk
294	};
295
296	if (quirk->type < QUIRK_TYPE_COUNT) {
297	return quirk_funcs[quirk->type](chip, iface, driver, quirk);
298	} else {
299	snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
300	return -ENXIO;
301	}
302	}
303
304	/*
305	* boot quirks
306	*/
307
308	#define EXTIGY_FIRMWARE_SIZE_OLD 794
309	#define EXTIGY_FIRMWARE_SIZE_NEW 483
310
311	static int snd_usb_extigy_boot_quirk(struct usb_device dev, struct usb_interface intf)
312	{
313	struct usb_host_config *config = dev->actconfig;
314	int err;
315
316	if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD \|\|
317	le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
318	snd_printdd("sending Extigy boot sequence...\n");
319	/* Send message to force it to reconnect with full interface. */
320	err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
321	0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
322	if (err < 0) snd_printdd("error sending boot message: %d\n", err);
323	err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
324	&dev->descriptor, sizeof(dev->descriptor));
325	config = dev->actconfig;
326	if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
327	err = usb_reset_configuration(dev);
328	if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
329	snd_printdd("extigy_boot: new boot length = %d\n",
330	le16_to_cpu(get_cfg_desc(config)->wTotalLength));
331	return -ENODEV; /* quit this anyway */
332	}
333	return 0;
334	}
335
336	static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
337	{
338	u8 buf = 1;
339
340	snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
341	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_OTHER,
342	0, 0, &buf, 1, 1000);
343	if (buf == 0) {
344	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
345	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_OTHER,
346	1, 2000, NULL, 0, 1000);
347	return -ENODEV;
348	}
349	return 0;
350	}
351
352	/*
353	* C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
354	* documented in the device's data sheet.
355	*/
356	static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
357	{
358	u8 buf[4];
359	buf[0] = 0x20;
360	buf[1] = value & 0xff;
361	buf[2] = (value >> 8) & 0xff;
362	buf[3] = reg;
363	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
364	USB_DIR_OUT \| USB_TYPE_CLASS \| USB_RECIP_ENDPOINT,
365	0, 0, &buf, 4, 1000);
366	}
367
368	static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
369	{
370	/*
371	* Enable line-out driver mode, set headphone source to front
372	* channels, enable stereo mic.
373	*/
374	return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
375	}
376
377	/*
378	* C-Media CM6206 is based on CM106 with two additional
379	* registers that are not documented in the data sheet.
380	* Values here are chosen based on sniffing USB traffic
381	* under Windows.
382	*/
383	static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
384	{
385	int err, reg;
386	int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
387
388	for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
389	err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
390	if (err < 0)
391	return err;
392	}
393
394	return err;
395	}
396
397	/*
398	* This call will put the synth in "USB send" mode, i.e it will send MIDI
399	* messages through USB (this is disabled at startup). The synth will
400	* acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
401	* sign on its LCD. Values here are chosen based on sniffing USB traffic
402	* under Windows.
403	*/
404	static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
405	{
406	int err, actual_length;
407
408	/* "midi send" enable */
409	static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
410
411	void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
412	if (!buf)
413	return -ENOMEM;
414	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
415	ARRAY_SIZE(seq), &actual_length, 1000);
416	kfree(buf);
417	if (err < 0)
418	return err;
419
420	return 0;
421	}
422
423	/*
424	* Setup quirks
425	*/
426	#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
427	#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
428	#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
429	#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
430	#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
431	#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
432	#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
433	#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
434	#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
435	#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
436
437	static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
438	int iface,
439	int altno)
440	{
441	/* Reset ALL ifaces to 0 altsetting.
442	* Call it for every possible altsetting of every interface.
443	*/
444	usb_set_interface(chip->dev, iface, 0);
445
446	if (chip->setup & AUDIOPHILE_SET) {
447	if ((chip->setup & AUDIOPHILE_SET_DTS)
448	&& altno != 6)
449	return 1; /* skip this altsetting */
450	if ((chip->setup & AUDIOPHILE_SET_96K)
451	&& altno != 1)
452	return 1; /* skip this altsetting */
453	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
454	AUDIOPHILE_SET_24B_48K_DI && altno != 2)
455	return 1; /* skip this altsetting */
456	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
457	AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
458	return 1; /* skip this altsetting */
459	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
460	AUDIOPHILE_SET_16B_48K_DI && altno != 4)
461	return 1; /* skip this altsetting */
462	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
463	AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
464	return 1; /* skip this altsetting */
465	}
466
467	return 0; /* keep this altsetting */
468	}
469
470	int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
471	int iface,
472	int altno)
473	{
474	/* audiophile usb: skip altsets incompatible with device_setup */
475	if (chip->usb_id == USB_ID(0x0763, 0x2003))
476	return audiophile_skip_setting_quirk(chip, iface, altno);
477
478	return 0;
479	}
480
481	int snd_usb_apply_boot_quirk(struct usb_device *dev,
482	struct usb_interface *intf,
483	const struct snd_usb_audio_quirk *quirk)
484	{
485	u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
486	le16_to_cpu(dev->descriptor.idProduct));
487
488	/* SB Extigy needs special boot-up sequence */
489	/* if more models come, this will go to the quirk list. */
490	if (id == USB_ID(0x041e, 0x3000))
491	return snd_usb_extigy_boot_quirk(dev, intf);
492
493	/* SB Audigy 2 NX needs its own boot-up magic, too */
494	if (id == USB_ID(0x041e, 0x3020))
495	return snd_usb_audigy2nx_boot_quirk(dev);
496
497	/* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
498	if (id == USB_ID(0x10f5, 0x0200))
499	return snd_usb_cm106_boot_quirk(dev);
500
501	/* C-Media CM6206 / CM106-Like Sound Device */
502	if (id == USB_ID(0x0d8c, 0x0102))
503	return snd_usb_cm6206_boot_quirk(dev);
504
505	/* Access Music VirusTI Desktop */
506	if (id == USB_ID(0x133e, 0x0815))
507	return snd_usb_accessmusic_boot_quirk(dev);
508
509	return 0;
510	}
511
512	/*
513	* check if the device uses big-endian samples
514	*/
515	int snd_usb_is_big_endian_format(struct snd_usb_audio chip, struct audioformat fp)
516	{
517	switch (chip->usb_id) {
518	case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
519	if (fp->endpoint & USB_DIR_IN)
520	return 1;
521	break;
522	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
523	if (chip->setup == 0x00 \|\|
524	fp->altsetting==1 \|\| fp->altsetting==2 \|\| fp->altsetting==3)
525	return 1;
526	}
527	return 0;
528	}
529
530	/*
531	* For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device,
532	* not for interface.
533	*/
534
535	enum {
536	EMU_QUIRK_SR_44100HZ = 0,
537	EMU_QUIRK_SR_48000HZ,
538	EMU_QUIRK_SR_88200HZ,
539	EMU_QUIRK_SR_96000HZ,
540	EMU_QUIRK_SR_176400HZ,
541	EMU_QUIRK_SR_192000HZ
542	};
543
544	static void set_format_emu_quirk(struct snd_usb_substream *subs,
545	struct audioformat *fmt)
546	{
547	unsigned char emu_samplerate_id = 0;
548
549	/* When capture is active
550	* sample rate shouldn't be changed
551	* by playback substream
552	*/
553	if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
554	if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
555	return;
556	}
557
558	switch (fmt->rate_min) {
559	case 48000:
560	emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
561	break;
562	case 88200:
563	emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
564	break;
565	case 96000:
566	emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
567	break;
568	case 176400:
569	emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
570	break;
571	case 192000:
572	emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
573	break;
574	default:
575	emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
576	break;
577	}
578	snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
579	}
580
581	void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
582	struct audioformat *fmt)
583	{
584	switch (subs->stream->chip->usb_id) {
585	case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
586	case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
587	case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
588	set_format_emu_quirk(subs, fmt);
589	break;
590	}
591	}
592