[linux-2.6-block.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 "mixer_quirks.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, fp->iface, alts, fp);
	snd_usb_init_sample_rate(chip, 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 = {
		.formats = SNDRV_PCM_FMTBIT_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"
7b1eda22	28	#include "mixer_quirks.h"
e5779998 DM	29	#include "midi.h"
	30	#include "quirks.h"
	31	#include "helper.h"
	32	#include "endpoint.h"
	33	#include "pcm.h"
	34
	35	/*
	36	* handle the quirks for the contained interfaces
	37	*/
	38	static int create_composite_quirk(struct snd_usb_audio *chip,
	39	struct usb_interface *iface,
	40	struct usb_driver *driver,
	41	const struct snd_usb_audio_quirk *quirk)
	42	{
	43	int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
	44	int err;
	45
	46	for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
	47	iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
	48	if (!iface)
	49	continue;
	50	if (quirk->ifnum != probed_ifnum &&
	51	usb_interface_claimed(iface))
	52	continue;
	53	err = snd_usb_create_quirk(chip, iface, driver, quirk);
	54	if (err < 0)
	55	return err;
	56	if (quirk->ifnum != probed_ifnum)
	57	usb_driver_claim_interface(driver, iface, (void *)-1L);
	58	}
	59	return 0;
	60	}
	61
	62	static int ignore_interface_quirk(struct snd_usb_audio *chip,
	63	struct usb_interface *iface,
	64	struct usb_driver *driver,
	65	const struct snd_usb_audio_quirk *quirk)
	66	{
	67	return 0;
	68	}
	69
	70
	71	/*
	72	* Allow alignment on audio sub-slot (channel samples) rather than
	73	* on audio slots (audio frames)
	74	*/
	75	static int create_align_transfer_quirk(struct snd_usb_audio *chip,
	76	struct usb_interface *iface,
	77	struct usb_driver *driver,
	78	const struct snd_usb_audio_quirk *quirk)
	79	{
	80	chip->txfr_quirk = 1;
	81	return 1; /* Continue with creating streams and mixer */
	82	}
	83
	84	static int create_any_midi_quirk(struct snd_usb_audio *chip,
	85	struct usb_interface *intf,
	86	struct usb_driver *driver,
	87	const struct snd_usb_audio_quirk *quirk)
	88	{
	89	return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
	90	}
	91
	92	/*
93	* create a stream for an interface with proper descriptors
94	*/
95	static int create_standard_audio_quirk(struct snd_usb_audio *chip,
96	struct usb_interface *iface,
97	struct usb_driver *driver,
98	const struct snd_usb_audio_quirk *quirk)
99	{
100	struct usb_host_interface *alts;
101	struct usb_interface_descriptor *altsd;
102	int err;
103
104	alts = &iface->altsetting[0];
105	altsd = get_iface_desc(alts);
106	err = snd_usb_parse_audio_endpoints(chip, altsd->bInterfaceNumber);
107	if (err < 0) {
108	snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
109	altsd->bInterfaceNumber, err);
110	return err;
111	}
112	/* reset the current interface */
113	usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
114	return 0;
115	}
116
117	/*
118	* create a stream for an endpoint/altsetting without proper descriptors
119	*/
120	static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
121	struct usb_interface *iface,
122	struct usb_driver *driver,
123	const struct snd_usb_audio_quirk *quirk)
124	{
125	struct audioformat *fp;
126	struct usb_host_interface *alts;
127	int stream, err;
128	unsigned *rate_table = NULL;
129
130	fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
131	if (! fp) {
132	snd_printk(KERN_ERR "cannot memdup\n");
133	return -ENOMEM;
134	}
135	if (fp->nr_rates > 0) {
136	rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
137	if (!rate_table) {
138	kfree(fp);
139	return -ENOMEM;
140	}
141	memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
142	fp->rate_table = rate_table;
143	}
144
145	stream = (fp->endpoint & USB_DIR_IN)
146	? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
147	err = snd_usb_add_audio_endpoint(chip, stream, fp);
148	if (err < 0) {
149	kfree(fp);
150	kfree(rate_table);
151	return err;
152	}
153	if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber \|\|
154	fp->altset_idx >= iface->num_altsetting) {
155	kfree(fp);
156	kfree(rate_table);
157	return -EINVAL;
158	}
159	alts = &iface->altsetting[fp->altset_idx];
160	fp->datainterval = snd_usb_parse_datainterval(chip, alts);
161	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
162	usb_set_interface(chip->dev, fp->iface, 0);
767d75ad DM	163	snd_usb_init_pitch(chip, fp->iface, alts, fp);
767d75ad DM	164	snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
e5779998 DM	165	return 0;
	166	}
	167
	168	/*
	169	* Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
	170	* The only way to detect the sample rate is by looking at wMaxPacketSize.
	171	*/
	172	static int create_uaxx_quirk(struct snd_usb_audio *chip,
	173	struct usb_interface *iface,
	174	struct usb_driver *driver,
	175	const struct snd_usb_audio_quirk *quirk)
	176	{
	177	static const struct audioformat ua_format = {
015eb0b0	178	.formats = SNDRV_PCM_FMTBIT_S24_3LE,
e5779998 DM	179	.channels = 2,
	180	.fmt_type = UAC_FORMAT_TYPE_I,
	181	.altsetting = 1,
	182	.altset_idx = 1,
	183	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	184	};
	185	struct usb_host_interface *alts;
	186	struct usb_interface_descriptor *altsd;
	187	struct audioformat *fp;
	188	int stream, err;
	189
	190	/* both PCM and MIDI interfaces have 2 or more altsettings */
	191	if (iface->num_altsetting < 2)
	192	return -ENXIO;
	193	alts = &iface->altsetting[1];
	194	altsd = get_iface_desc(alts);
	195
	196	if (altsd->bNumEndpoints == 2) {
	197	static const struct snd_usb_midi_endpoint_info ua700_ep = {
	198	.out_cables = 0x0003,
	199	.in_cables = 0x0003
	200	};
	201	static const struct snd_usb_audio_quirk ua700_quirk = {
	202	.type = QUIRK_MIDI_FIXED_ENDPOINT,
	203	.data = &ua700_ep
	204	};
	205	static const struct snd_usb_midi_endpoint_info uaxx_ep = {
	206	.out_cables = 0x0001,
	207	.in_cables = 0x0001
	208	};
	209	static const struct snd_usb_audio_quirk uaxx_quirk = {
	210	.type = QUIRK_MIDI_FIXED_ENDPOINT,
	211	.data = &uaxx_ep
	212	};
	213	const struct snd_usb_audio_quirk *quirk =
	214	chip->usb_id == USB_ID(0x0582, 0x002b)
	215	? &ua700_quirk : &uaxx_quirk;
	216	return snd_usbmidi_create(chip->card, iface,
	217	&chip->midi_list, quirk);
	218	}
	219
	220	if (altsd->bNumEndpoints != 1)
	221	return -ENXIO;
	222
	223	fp = kmalloc(sizeof(*fp), GFP_KERNEL);
	224	if (!fp)
	225	return -ENOMEM;
	226	memcpy(fp, &ua_format, sizeof(*fp));
	227
	228	fp->iface = altsd->bInterfaceNumber;
	229	fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
	230	fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
	231	fp->datainterval = 0;
	232	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
	233
	234	switch (fp->maxpacksize) {
	235	case 0x120:
	236	fp->rate_max = fp->rate_min = 44100;
	237	break;
	238	case 0x138:
	239	case 0x140:
	240	fp->rate_max = fp->rate_min = 48000;
	241	break;
	242	case 0x258:
243	case 0x260:
244	fp->rate_max = fp->rate_min = 96000;
245	break;
246	default:
247	snd_printk(KERN_ERR "unknown sample rate\n");
248	kfree(fp);
249	return -ENXIO;
250	}
251
252	stream = (fp->endpoint & USB_DIR_IN)
253	? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
254	err = snd_usb_add_audio_endpoint(chip, stream, fp);
255	if (err < 0) {
256	kfree(fp);
257	return err;
258	}
259	usb_set_interface(chip->dev, fp->iface, 0);
260	return 0;
261	}
262
263	/*
264	* audio-interface quirks
265	*
266	* returns zero if no standard audio/MIDI parsing is needed.
267	* returns a postive value if standard audio/midi interfaces are parsed
268	* after this.
269	* returns a negative value at error.
270	*/
271	int snd_usb_create_quirk(struct snd_usb_audio *chip,
272	struct usb_interface *iface,
273	struct usb_driver *driver,
274	const struct snd_usb_audio_quirk *quirk)
275	{
276	typedef int (quirk_func_t)(struct snd_usb_audio ,
277	struct usb_interface *,
278	struct usb_driver *,
279	const struct snd_usb_audio_quirk *);
280	static const quirk_func_t quirk_funcs[] = {
281	[QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
282	[QUIRK_COMPOSITE] = create_composite_quirk,
283	[QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
284	[QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
285	[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
286	[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
287	[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
288	[QUIRK_MIDI_FASTLANE] = create_any_midi_quirk,
289	[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
290	[QUIRK_MIDI_CME] = create_any_midi_quirk,
291	[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
292	[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
293	[QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
294	[QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk
295	};
296
297	if (quirk->type < QUIRK_TYPE_COUNT) {
298	return quirk_funcs[quirk->type](chip, iface, driver, quirk);
299	} else {
300	snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
301	return -ENXIO;
302	}
303	}
304
305	/*
306	* boot quirks
307	*/
308
309	#define EXTIGY_FIRMWARE_SIZE_OLD 794
310	#define EXTIGY_FIRMWARE_SIZE_NEW 483
311
312	static int snd_usb_extigy_boot_quirk(struct usb_device dev, struct usb_interface intf)
313	{
314	struct usb_host_config *config = dev->actconfig;
315	int err;
316
317	if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD \|\|
318	le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
319	snd_printdd("sending Extigy boot sequence...\n");
320	/* Send message to force it to reconnect with full interface. */
321	err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
322	0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
323	if (err < 0) snd_printdd("error sending boot message: %d\n", err);
324	err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
325	&dev->descriptor, sizeof(dev->descriptor));
326	config = dev->actconfig;
327	if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
328	err = usb_reset_configuration(dev);
329	if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
330	snd_printdd("extigy_boot: new boot length = %d\n",
331	le16_to_cpu(get_cfg_desc(config)->wTotalLength));
332	return -ENODEV; /* quit this anyway */
333	}
334	return 0;
335	}
336
337	static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
338	{
339	u8 buf = 1;
340
341	snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
342	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_OTHER,
343	0, 0, &buf, 1, 1000);
344	if (buf == 0) {
345	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
346	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_OTHER,
347	1, 2000, NULL, 0, 1000);
348	return -ENODEV;
349	}
350	return 0;
351	}
352
353	/*
354	* C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
355	* documented in the device's data sheet.
356	*/
357	static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
358	{
359	u8 buf[4];
360	buf[0] = 0x20;
361	buf[1] = value & 0xff;
362	buf[2] = (value >> 8) & 0xff;
363	buf[3] = reg;
364	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
365	USB_DIR_OUT \| USB_TYPE_CLASS \| USB_RECIP_ENDPOINT,
366	0, 0, &buf, 4, 1000);
367	}
368
369	static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
370	{
371	/*
372	* Enable line-out driver mode, set headphone source to front
373	* channels, enable stereo mic.
374	*/
375	return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
376	}
377
378	/*
379	* C-Media CM6206 is based on CM106 with two additional
380	* registers that are not documented in the data sheet.
381	* Values here are chosen based on sniffing USB traffic
382	* under Windows.
383	*/
384	static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
385	{
386	int err, reg;
387	int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
388
389	for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
390	err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
391	if (err < 0)
392	return err;
393	}
394
395	return err;
396	}
397
398	/*
399	* This call will put the synth in "USB send" mode, i.e it will send MIDI
400	* messages through USB (this is disabled at startup). The synth will
401	* acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
402	* sign on its LCD. Values here are chosen based on sniffing USB traffic
403	* under Windows.
404	*/
405	static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
406	{
407	int err, actual_length;
408
409	/* "midi send" enable */
410	static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
411
412	void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
413	if (!buf)
414	return -ENOMEM;
415	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
416	ARRAY_SIZE(seq), &actual_length, 1000);
417	kfree(buf);
418	if (err < 0)
419	return err;
420
421	return 0;
422	}
423
424	/*
425	* Setup quirks
426	*/
427	#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
428	#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
429	#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
430	#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
431	#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
432	#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
433	#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
434	#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
435	#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
436	#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
437
438	static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
439	int iface,
440	int altno)
441	{
442	/* Reset ALL ifaces to 0 altsetting.
443	* Call it for every possible altsetting of every interface.
444	*/
445	usb_set_interface(chip->dev, iface, 0);
446
447	if (chip->setup & AUDIOPHILE_SET) {
448	if ((chip->setup & AUDIOPHILE_SET_DTS)
449	&& altno != 6)
450	return 1; /* skip this altsetting */
451	if ((chip->setup & AUDIOPHILE_SET_96K)
452	&& altno != 1)
453	return 1; /* skip this altsetting */
454	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
455	AUDIOPHILE_SET_24B_48K_DI && altno != 2)
456	return 1; /* skip this altsetting */
457	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
458	AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
459	return 1; /* skip this altsetting */
460	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
461	AUDIOPHILE_SET_16B_48K_DI && altno != 4)
462	return 1; /* skip this altsetting */
463	if ((chip->setup & AUDIOPHILE_SET_MASK) ==
464	AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
465	return 1; /* skip this altsetting */
466	}
467
468	return 0; /* keep this altsetting */
469	}
470
471	int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
472	int iface,
473	int altno)
474	{
475	/* audiophile usb: skip altsets incompatible with device_setup */
476	if (chip->usb_id == USB_ID(0x0763, 0x2003))
477	return audiophile_skip_setting_quirk(chip, iface, altno);
478
479	return 0;
480	}
481
482	int snd_usb_apply_boot_quirk(struct usb_device *dev,
483	struct usb_interface *intf,
484	const struct snd_usb_audio_quirk *quirk)
485	{
486	u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
487	le16_to_cpu(dev->descriptor.idProduct));
488
489	/* SB Extigy needs special boot-up sequence */
490	/* if more models come, this will go to the quirk list. */
491	if (id == USB_ID(0x041e, 0x3000))
492	return snd_usb_extigy_boot_quirk(dev, intf);
493
494	/* SB Audigy 2 NX needs its own boot-up magic, too */
495	if (id == USB_ID(0x041e, 0x3020))
496	return snd_usb_audigy2nx_boot_quirk(dev);
497
498	/* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
499	if (id == USB_ID(0x10f5, 0x0200))
500	return snd_usb_cm106_boot_quirk(dev);
501
502	/* C-Media CM6206 / CM106-Like Sound Device */
503	if (id == USB_ID(0x0d8c, 0x0102))
504	return snd_usb_cm6206_boot_quirk(dev);
505
506	/* Access Music VirusTI Desktop */
507	if (id == USB_ID(0x133e, 0x0815))
508	return snd_usb_accessmusic_boot_quirk(dev);
509
510	return 0;
511	}
512
513	/*
514	* check if the device uses big-endian samples
515	*/
516	int snd_usb_is_big_endian_format(struct snd_usb_audio chip, struct audioformat fp)
517	{
518	switch (chip->usb_id) {
519	case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
520	if (fp->endpoint & USB_DIR_IN)
521	return 1;
522	break;
523	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
524	if (chip->setup == 0x00 \|\|
525	fp->altsetting==1 \|\| fp->altsetting==2 \|\| fp->altsetting==3)
526	return 1;
527	}
528	return 0;
529	}
530
531	/*
532	* For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device,
533	* not for interface.
534	*/
535
536	enum {
537	EMU_QUIRK_SR_44100HZ = 0,
538	EMU_QUIRK_SR_48000HZ,
539	EMU_QUIRK_SR_88200HZ,
540	EMU_QUIRK_SR_96000HZ,
541	EMU_QUIRK_SR_176400HZ,
542	EMU_QUIRK_SR_192000HZ
543	};
544
545	static void set_format_emu_quirk(struct snd_usb_substream *subs,
546	struct audioformat *fmt)
547	{
548	unsigned char emu_samplerate_id = 0;
549
550	/* When capture is active
551	* sample rate shouldn't be changed
552	* by playback substream
553	*/
554	if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
555	if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
556	return;
557	}
558
559	switch (fmt->rate_min) {
560	case 48000:
561	emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
562	break;
563	case 88200:
564	emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
565	break;
566	case 96000:
567	emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
568	break;
569	case 176400:
570	emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
571	break;
572	case 192000:
573	emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
574	break;
575	default:
576	emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
577	break;
578	}
579	snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
580	}
581
582	void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
583	struct audioformat *fmt)
584	{
585	switch (subs->stream->chip->usb_id) {
586	case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
587	case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
588	case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
589	set_format_emu_quirk(subs, fmt);
590	break;
591	}
592	}
593