sound/pci/oxygen/oxygen.c - maze/linux - Git at Google

 /*
  * C-Media CMI8788 driver for C-Media's reference design and for the X-Meridian
  *
  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
  *
  *
  *  This driver is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License, version 2.
  *
  *  This driver 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 driver; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */

 /*
  * SPI 0 -> 1st AK4396 (front)
  * SPI 1 -> 2nd AK4396 (surround)
  * SPI 2 -> 3rd AK4396 (center/LFE)
  * SPI 3 -> WM8785
  * SPI 4 -> 4th AK4396 (back)
  *
  * GPIO 0 -> DFS0 of AK5385
  * GPIO 1 -> DFS1 of AK5385
  */

 #include <linux/pci.h>
 #include <sound/core.h>
 #include <sound/initval.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/tlv.h>
 #include "oxygen.h"

 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
 MODULE_DESCRIPTION("C-Media CMI8788 driver");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8788}}");

 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;

 module_param_array(index, int, NULL, 0444);
 MODULE_PARM_DESC(index, "card index");
 module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string");
 module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "enable card");

 static struct pci_device_id oxygen_ids[] __devinitdata = {
 	{ OXYGEN_PCI_SUBID(0x10b0, 0x0216) },
 	{ OXYGEN_PCI_SUBID(0x10b0, 0x0218) },
 	{ OXYGEN_PCI_SUBID(0x10b0, 0x0219) },
 	{ OXYGEN_PCI_SUBID(0x13f6, 0x0001) },
 	{ OXYGEN_PCI_SUBID(0x13f6, 0x0010) },
 	{ OXYGEN_PCI_SUBID(0x13f6, 0x8788) },
 	{ OXYGEN_PCI_SUBID(0x147a, 0xa017) },
 	{ OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
 	{ OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
 	{ OXYGEN_PCI_SUBID(0x1a58, 0x0910) },
 	{ OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
 	{ OXYGEN_PCI_SUBID(0x7284, 0x9761) },
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, oxygen_ids);

 #define AK4396_WRITE	0x2000

 /* register 0 */
 #define AK4396_RSTN		0x01
 #define AK4396_DIF_24_MSB	0x04
 /* register 1 */
 #define AK4396_SMUTE		0x01
 #define AK4396_DEM_OFF		0x02
 #define AK4396_DFS_MASK		0x18
 #define AK4396_DFS_NORMAL	0x00
 #define AK4396_DFS_DOUBLE	0x08
 #define AK4396_DFS_QUAD		0x10

 /* register 0 */
 #define WM8785_OSR_SINGLE	0x000
 #define WM8785_OSR_DOUBLE	0x008
 #define WM8785_OSR_QUAD		0x010
 #define WM8785_FORMAT_LJUST	0x020
 #define WM8785_FORMAT_I2S	0x040
 /* register 1 */
 #define WM8785_WL_16		0x000
 #define WM8785_WL_20		0x001
 #define WM8785_WL_24		0x002
 #define WM8785_WL_32		0x003

 static void ak4396_write(struct oxygen *chip, unsigned int codec,
 			 u8 reg, u8 value)
 {
 	/* maps ALSA channel pair number to SPI output */
 	static const u8 codec_spi_map[4] = {
 		0, 1, 2, 4
 	};
 	oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
 			 OXYGEN_SPI_DATA_LENGTH_2 |
 			 (codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
 			 OXYGEN_SPI_MAGIC,
 			 AK4396_WRITE | (reg << 8) | value);
 }

 static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
 {
 	oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
 			 OXYGEN_SPI_DATA_LENGTH_2 |
 			 (3 << OXYGEN_SPI_CODEC_SHIFT),
 			 (reg << 9) | value);
 }

 static void ak4396_init(struct oxygen *chip)
 {
 	unsigned int i;

 	chip->ak4396_reg1 = AK4396_DEM_OFF | AK4396_DFS_NORMAL;
 	for (i = 0; i < 4; ++i) {
 		ak4396_write(chip, i, 0, AK4396_DIF_24_MSB | AK4396_RSTN);
 		ak4396_write(chip, i, 1, chip->ak4396_reg1);
 		ak4396_write(chip, i, 2, 0);
 		ak4396_write(chip, i, 3, 0xff);
 		ak4396_write(chip, i, 4, 0xff);
 	}
 	snd_component_add(chip->card, "AK4396");
 }

 static void ak5385_init(struct oxygen *chip)
 {
 	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, 0x0003);
 	oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, 0x0003);
 	snd_component_add(chip->card, "AK5385");
 }

 static void wm8785_init(struct oxygen *chip)
 {
 	wm8785_write(chip, 7, 0);
 	wm8785_write(chip, 0, WM8785_FORMAT_LJUST | WM8785_OSR_SINGLE);
 	wm8785_write(chip, 1, WM8785_WL_24);
 	snd_component_add(chip->card, "WM8785");
 }

 static void generic_init(struct oxygen *chip)
 {
 	ak4396_init(chip);
 	wm8785_init(chip);
 }

 static void meridian_init(struct oxygen *chip)
 {
 	ak4396_init(chip);
 	ak5385_init(chip);
 }

 static void generic_cleanup(struct oxygen *chip)
 {
 }

 static void set_ak4396_params(struct oxygen *chip,
 			      struct snd_pcm_hw_params *params)
 {
 	unsigned int i;
 	u8 value;

 	value = chip->ak4396_reg1 & ~AK4396_DFS_MASK;
 	if (params_rate(params) <= 54000)
 		value |= AK4396_DFS_NORMAL;
 	else if (params_rate(params) < 120000)
 		value |= AK4396_DFS_DOUBLE;
 	else
 		value |= AK4396_DFS_QUAD;
 	chip->ak4396_reg1 = value;
 	for (i = 0; i < 4; ++i) {
 		ak4396_write(chip, i, 0, AK4396_DIF_24_MSB);
 		ak4396_write(chip, i, 1, value);
 		ak4396_write(chip, i, 0, AK4396_DIF_24_MSB | AK4396_RSTN);
 	}
 }

 static void update_ak4396_volume(struct oxygen *chip)
 {
 	unsigned int i;

 	for (i = 0; i < 4; ++i) {
 		ak4396_write(chip, i, 3, chip->dac_volume[i * 2]);
 		ak4396_write(chip, i, 4, chip->dac_volume[i * 2 + 1]);
 	}
 }

 static void update_ak4396_mute(struct oxygen *chip)
 {
 	unsigned int i;
 	u8 value;

 	value = chip->ak4396_reg1 & ~AK4396_SMUTE;
 	if (chip->dac_mute)
 		value |= AK4396_SMUTE;
 	for (i = 0; i < 4; ++i)
 		ak4396_write(chip, i, 1, value);
 }

 static void set_wm8785_params(struct oxygen *chip,
 			      struct snd_pcm_hw_params *params)
 {
 	unsigned int value;

 	wm8785_write(chip, 7, 0);

 	value = WM8785_FORMAT_LJUST;
 	if (params_rate(params) == 96000)
 		value |= WM8785_OSR_DOUBLE;
 	else if (params_rate(params) == 192000)
 		value |= WM8785_OSR_QUAD;
 	else
 		value |= WM8785_OSR_SINGLE;
 	wm8785_write(chip, 0, value);

 	if (snd_pcm_format_width(params_format(params)) <= 16)
 		value = WM8785_WL_16;
 	else
 		value = WM8785_WL_24;
 	wm8785_write(chip, 1, value);
 }

 static void set_ak5385_params(struct oxygen *chip,
 			      struct snd_pcm_hw_params *params)
 {
 	unsigned int value;

 	if (params_rate(params) <= 54000)
 		value = 0;
 	else if (params_rate(params) <= 108000)
 		value = 1;
 	else
 		value = 2;
 	oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, value, 0x0003);
 }

 static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);

 static const struct oxygen_model model_generic = {
 	.shortname = "C-Media CMI8788",
 	.longname = "C-Media Oxygen HD Audio",
 	.chip = "CMI8788",
 	.owner = THIS_MODULE,
 	.init = generic_init,
 	.cleanup = generic_cleanup,
 	.set_dac_params = set_ak4396_params,
 	.set_adc_params = set_wm8785_params,
 	.update_dac_volume = update_ak4396_volume,
 	.update_dac_mute = update_ak4396_mute,
 	.dac_tlv = ak4396_db_scale,
 	.used_channels = OXYGEN_CHANNEL_A |
 			 OXYGEN_CHANNEL_C |
 			 OXYGEN_CHANNEL_SPDIF |
 			 OXYGEN_CHANNEL_MULTICH |
 			 OXYGEN_CHANNEL_AC97,
 	.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 };
 static const struct oxygen_model model_meridian = {
 	.shortname = "C-Media CMI8788",
 	.longname = "C-Media Oxygen HD Audio",
 	.chip = "CMI8788",
 	.owner = THIS_MODULE,
 	.init = meridian_init,
 	.cleanup = generic_cleanup,
 	.set_dac_params = set_ak4396_params,
 	.set_adc_params = set_ak5385_params,
 	.update_dac_volume = update_ak4396_volume,
 	.update_dac_mute = update_ak4396_mute,
 	.dac_tlv = ak4396_db_scale,
 	.used_channels = OXYGEN_CHANNEL_B |
 			 OXYGEN_CHANNEL_C |
 			 OXYGEN_CHANNEL_SPDIF |
 			 OXYGEN_CHANNEL_MULTICH |
 			 OXYGEN_CHANNEL_AC97,
 	.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 };

 static int __devinit generic_oxygen_probe(struct pci_dev *pci,
 					  const struct pci_device_id *pci_id)
 {
 	static int dev;
 	const struct oxygen_model *model;
 	int err;

 	if (dev >= SNDRV_CARDS)
 		return -ENODEV;
 	if (!enable[dev]) {
 		++dev;
 		return -ENOENT;
 	}
 	model = pci_id->driver_data ? &model_meridian : &model_generic;
 	err = oxygen_pci_probe(pci, index[dev], id[dev], model);
 	if (err >= 0)
 		++dev;
 	return err;
 }

 static struct pci_driver oxygen_driver = {
 	.name = "CMI8788",
 	.id_table = oxygen_ids,
 	.probe = generic_oxygen_probe,
 	.remove = __devexit_p(oxygen_pci_remove),
 };

 static int __init alsa_card_oxygen_init(void)
 {
 	return pci_register_driver(&oxygen_driver);
 }

 static void __exit alsa_card_oxygen_exit(void)
 {
 	pci_unregister_driver(&oxygen_driver);
 }

 module_init(alsa_card_oxygen_init)
 module_exit(alsa_card_oxygen_exit)
	/*
	* C-Media CMI8788 driver for C-Media's reference design and for the X-Meridian
	*
	* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
	*
	*
	* This driver is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License, version 2.
	*
	* This driver 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 driver; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	/*
	* SPI 0 -> 1st AK4396 (front)
	* SPI 1 -> 2nd AK4396 (surround)
	* SPI 2 -> 3rd AK4396 (center/LFE)
	* SPI 3 -> WM8785
	* SPI 4 -> 4th AK4396 (back)
	*
	* GPIO 0 -> DFS0 of AK5385
	* GPIO 1 -> DFS1 of AK5385
	*/

	#include <linux/pci.h>
	#include <sound/core.h>
	#include <sound/initval.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/tlv.h>
	#include "oxygen.h"

	MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
	MODULE_DESCRIPTION("C-Media CMI8788 driver");
	MODULE_LICENSE("GPL");
	MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8788}}");

	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
	static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;

	module_param_array(index, int, NULL, 0444);
	MODULE_PARM_DESC(index, "card index");
	module_param_array(id, charp, NULL, 0444);
	MODULE_PARM_DESC(id, "ID string");
	module_param_array(enable, bool, NULL, 0444);
	MODULE_PARM_DESC(enable, "enable card");

	static struct pci_device_id oxygen_ids[] __devinitdata = {
	{ OXYGEN_PCI_SUBID(0x10b0, 0x0216) },
	{ OXYGEN_PCI_SUBID(0x10b0, 0x0218) },
	{ OXYGEN_PCI_SUBID(0x10b0, 0x0219) },
	{ OXYGEN_PCI_SUBID(0x13f6, 0x0001) },
	{ OXYGEN_PCI_SUBID(0x13f6, 0x0010) },
	{ OXYGEN_PCI_SUBID(0x13f6, 0x8788) },
	{ OXYGEN_PCI_SUBID(0x147a, 0xa017) },
	{ OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
	{ OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
	{ OXYGEN_PCI_SUBID(0x1a58, 0x0910) },
	{ OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
	{ OXYGEN_PCI_SUBID(0x7284, 0x9761) },
	{ }
	};
	MODULE_DEVICE_TABLE(pci, oxygen_ids);

	#define AK4396_WRITE 0x2000

	/* register 0 */
	#define AK4396_RSTN 0x01
	#define AK4396_DIF_24_MSB 0x04
	/* register 1 */
	#define AK4396_SMUTE 0x01
	#define AK4396_DEM_OFF 0x02
	#define AK4396_DFS_MASK 0x18
	#define AK4396_DFS_NORMAL 0x00
	#define AK4396_DFS_DOUBLE 0x08
	#define AK4396_DFS_QUAD 0x10

	/* register 0 */
	#define WM8785_OSR_SINGLE 0x000
	#define WM8785_OSR_DOUBLE 0x008
	#define WM8785_OSR_QUAD 0x010
	#define WM8785_FORMAT_LJUST 0x020
	#define WM8785_FORMAT_I2S 0x040
	/* register 1 */
	#define WM8785_WL_16 0x000
	#define WM8785_WL_20 0x001
	#define WM8785_WL_24 0x002
	#define WM8785_WL_32 0x003

	static void ak4396_write(struct oxygen *chip, unsigned int codec,
	u8 reg, u8 value)
	{
	/* maps ALSA channel pair number to SPI output */
	static const u8 codec_spi_map[4] = {
	0, 1, 2, 4
	};
	oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE \|
	OXYGEN_SPI_DATA_LENGTH_2 \|
	(codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) \|
	OXYGEN_SPI_MAGIC,
	AK4396_WRITE \| (reg << 8) \| value);
	}

	static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
	{
	oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE \|
	OXYGEN_SPI_DATA_LENGTH_2 \|
	(3 << OXYGEN_SPI_CODEC_SHIFT),
	(reg << 9) \| value);
	}

	static void ak4396_init(struct oxygen *chip)
	{
	unsigned int i;

	chip->ak4396_reg1 = AK4396_DEM_OFF \| AK4396_DFS_NORMAL;
	for (i = 0; i < 4; ++i) {
	ak4396_write(chip, i, 0, AK4396_DIF_24_MSB \| AK4396_RSTN);
	ak4396_write(chip, i, 1, chip->ak4396_reg1);
	ak4396_write(chip, i, 2, 0);
	ak4396_write(chip, i, 3, 0xff);
	ak4396_write(chip, i, 4, 0xff);
	}
	snd_component_add(chip->card, "AK4396");
	}

	static void ak5385_init(struct oxygen *chip)
	{
	oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, 0x0003);
	oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, 0x0003);
	snd_component_add(chip->card, "AK5385");
	}

	static void wm8785_init(struct oxygen *chip)
	{
	wm8785_write(chip, 7, 0);
	wm8785_write(chip, 0, WM8785_FORMAT_LJUST \| WM8785_OSR_SINGLE);
	wm8785_write(chip, 1, WM8785_WL_24);
	snd_component_add(chip->card, "WM8785");
	}

	static void generic_init(struct oxygen *chip)
	{
	ak4396_init(chip);
	wm8785_init(chip);
	}

	static void meridian_init(struct oxygen *chip)
	{
	ak4396_init(chip);
	ak5385_init(chip);
	}

	static void generic_cleanup(struct oxygen *chip)
	{
	}

	static void set_ak4396_params(struct oxygen *chip,
	struct snd_pcm_hw_params *params)
	{
	unsigned int i;
	u8 value;

	value = chip->ak4396_reg1 & ~AK4396_DFS_MASK;
	if (params_rate(params) <= 54000)
	value \|= AK4396_DFS_NORMAL;
	else if (params_rate(params) < 120000)
	value \|= AK4396_DFS_DOUBLE;
	else
	value \|= AK4396_DFS_QUAD;
	chip->ak4396_reg1 = value;
	for (i = 0; i < 4; ++i) {
	ak4396_write(chip, i, 0, AK4396_DIF_24_MSB);
	ak4396_write(chip, i, 1, value);
	ak4396_write(chip, i, 0, AK4396_DIF_24_MSB \| AK4396_RSTN);
	}
	}

	static void update_ak4396_volume(struct oxygen *chip)
	{
	unsigned int i;

	for (i = 0; i < 4; ++i) {
	ak4396_write(chip, i, 3, chip->dac_volume[i * 2]);
	ak4396_write(chip, i, 4, chip->dac_volume[i * 2 + 1]);
	}
	}

	static void update_ak4396_mute(struct oxygen *chip)
	{
	unsigned int i;
	u8 value;

	value = chip->ak4396_reg1 & ~AK4396_SMUTE;
	if (chip->dac_mute)
	value \|= AK4396_SMUTE;
	for (i = 0; i < 4; ++i)
	ak4396_write(chip, i, 1, value);
	}

	static void set_wm8785_params(struct oxygen *chip,
	struct snd_pcm_hw_params *params)
	{
	unsigned int value;

	wm8785_write(chip, 7, 0);

	value = WM8785_FORMAT_LJUST;
	if (params_rate(params) == 96000)
	value \|= WM8785_OSR_DOUBLE;
	else if (params_rate(params) == 192000)
	value \|= WM8785_OSR_QUAD;
	else
	value \|= WM8785_OSR_SINGLE;
	wm8785_write(chip, 0, value);

	if (snd_pcm_format_width(params_format(params)) <= 16)
	value = WM8785_WL_16;
	else
	value = WM8785_WL_24;
	wm8785_write(chip, 1, value);
	}

	static void set_ak5385_params(struct oxygen *chip,
	struct snd_pcm_hw_params *params)
	{
	unsigned int value;

	if (params_rate(params) <= 54000)
	value = 0;
	else if (params_rate(params) <= 108000)
	value = 1;
	else
	value = 2;
	oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, value, 0x0003);
	}

	static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);

	static const struct oxygen_model model_generic = {
	.shortname = "C-Media CMI8788",
	.longname = "C-Media Oxygen HD Audio",
	.chip = "CMI8788",
	.owner = THIS_MODULE,
	.init = generic_init,
	.cleanup = generic_cleanup,
	.set_dac_params = set_ak4396_params,
	.set_adc_params = set_wm8785_params,
	.update_dac_volume = update_ak4396_volume,
	.update_dac_mute = update_ak4396_mute,
	.dac_tlv = ak4396_db_scale,
	.used_channels = OXYGEN_CHANNEL_A \|
	OXYGEN_CHANNEL_C \|
	OXYGEN_CHANNEL_SPDIF \|
	OXYGEN_CHANNEL_MULTICH \|
	OXYGEN_CHANNEL_AC97,
	.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
	};
	static const struct oxygen_model model_meridian = {
	.shortname = "C-Media CMI8788",
	.longname = "C-Media Oxygen HD Audio",
	.chip = "CMI8788",
	.owner = THIS_MODULE,
	.init = meridian_init,
	.cleanup = generic_cleanup,
	.set_dac_params = set_ak4396_params,
	.set_adc_params = set_ak5385_params,
	.update_dac_volume = update_ak4396_volume,
	.update_dac_mute = update_ak4396_mute,
	.dac_tlv = ak4396_db_scale,
	.used_channels = OXYGEN_CHANNEL_B \|
	OXYGEN_CHANNEL_C \|
	OXYGEN_CHANNEL_SPDIF \|
	OXYGEN_CHANNEL_MULTICH \|
	OXYGEN_CHANNEL_AC97,
	.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
	};

	static int __devinit generic_oxygen_probe(struct pci_dev *pci,
	const struct pci_device_id *pci_id)
	{
	static int dev;
	const struct oxygen_model *model;
	int err;

	if (dev >= SNDRV_CARDS)
	return -ENODEV;
	if (!enable[dev]) {
	++dev;
	return -ENOENT;
	}
	model = pci_id->driver_data ? &model_meridian : &model_generic;
	err = oxygen_pci_probe(pci, index[dev], id[dev], model);
	if (err >= 0)
	++dev;
	return err;
	}

	static struct pci_driver oxygen_driver = {
	.name = "CMI8788",
	.id_table = oxygen_ids,
	.probe = generic_oxygen_probe,
	.remove = __devexit_p(oxygen_pci_remove),
	};

	static int __init alsa_card_oxygen_init(void)
	{
	return pci_register_driver(&oxygen_driver);
	}

	static void __exit alsa_card_oxygen_exit(void)
	{
	pci_unregister_driver(&oxygen_driver);
	}

	module_init(alsa_card_oxygen_init)
	module_exit(alsa_card_oxygen_exit)