diff --git a/include/sound/cs4231.h b/include/sound/cs4231.h
new file mode 100644
index 0000000..d7f9082
--- /dev/null
+++ b/include/sound/cs4231.h
@@ -0,0 +1,366 @@
+#ifndef __SOUND_CS4231_H
+#define __SOUND_CS4231_H
+
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *  Definitions for CS4231 & InterWave chips & compatible chips
+ *
+ *
+ *   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 "control.h"
+#include "pcm.h"
+#include "timer.h"
+
+#ifdef CONFIG_SBUS
+#define SBUS_SUPPORT
+#include <asm/sbus.h>
+#endif
+
+#if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
+#define EBUS_SUPPORT
+#include <linux/pci.h>
+#include <asm/ebus.h>
+#endif
+
+#if !defined(SBUS_SUPPORT) && !defined(EBUS_SUPPORT)
+#define LEGACY_SUPPORT
+#endif
+
+/* IO ports */
+
+#define CS4231P(x)		(c_d_c_CS4231##x)
+
+#define c_d_c_CS4231REGSEL	0
+#define c_d_c_CS4231REG		1
+#define c_d_c_CS4231STATUS	2
+#define c_d_c_CS4231PIO		3
+
+/* codec registers */
+
+#define CS4231_LEFT_INPUT	0x00	/* left input control */
+#define CS4231_RIGHT_INPUT	0x01	/* right input control */
+#define CS4231_AUX1_LEFT_INPUT	0x02	/* left AUX1 input control */
+#define CS4231_AUX1_RIGHT_INPUT	0x03	/* right AUX1 input control */
+#define CS4231_AUX2_LEFT_INPUT	0x04	/* left AUX2 input control */
+#define CS4231_AUX2_RIGHT_INPUT	0x05	/* right AUX2 input control */
+#define CS4231_LEFT_OUTPUT	0x06	/* left output control register */
+#define CS4231_RIGHT_OUTPUT	0x07	/* right output control register */
+#define CS4231_PLAYBK_FORMAT	0x08	/* clock and data format - playback - bits 7-0 MCE */
+#define CS4231_IFACE_CTRL	0x09	/* interface control - bits 7-2 MCE */
+#define CS4231_PIN_CTRL		0x0a	/* pin control */
+#define CS4231_TEST_INIT	0x0b	/* test and initialization */
+#define CS4231_MISC_INFO	0x0c	/* miscellaneaous information */
+#define CS4231_LOOPBACK		0x0d	/* loopback control */
+#define CS4231_PLY_UPR_CNT	0x0e	/* playback upper base count */
+#define CS4231_PLY_LWR_CNT	0x0f	/* playback lower base count */
+#define CS4231_ALT_FEATURE_1	0x10	/* alternate #1 feature enable */
+#define AD1845_AF1_MIC_LEFT	0x10	/* alternate #1 feature + MIC left */
+#define CS4231_ALT_FEATURE_2	0x11	/* alternate #2 feature enable */
+#define AD1845_AF2_MIC_RIGHT	0x11	/* alternate #2 feature + MIC right */
+#define CS4231_LEFT_LINE_IN	0x12	/* left line input control */
+#define CS4231_RIGHT_LINE_IN	0x13	/* right line input control */
+#define CS4231_TIMER_LOW	0x14	/* timer low byte */
+#define CS4231_TIMER_HIGH	0x15	/* timer high byte */
+#define CS4231_LEFT_MIC_INPUT	0x16	/* left MIC input control register (InterWave only) */
+#define AD1845_UPR_FREQ_SEL	0x16	/* upper byte of frequency select */
+#define CS4231_RIGHT_MIC_INPUT	0x17	/* right MIC input control register (InterWave only) */
+#define AD1845_LWR_FREQ_SEL	0x17	/* lower byte of frequency select */
+#define CS4236_EXT_REG		0x17	/* extended register access */
+#define CS4231_IRQ_STATUS	0x18	/* irq status register */
+#define CS4231_LINE_LEFT_OUTPUT	0x19	/* left line output control register (InterWave only) */
+#define CS4231_VERSION		0x19	/* CS4231(A) - version values */
+#define CS4231_MONO_CTRL	0x1a	/* mono input/output control */
+#define CS4231_LINE_RIGHT_OUTPUT 0x1b	/* right line output control register (InterWave only) */
+#define AD1845_PWR_DOWN		0x1b	/* power down control */
+#define CS4235_LEFT_MASTER	0x1b	/* left master output control */
+#define CS4231_REC_FORMAT	0x1c	/* clock and data format - record - bits 7-0 MCE */
+#define CS4231_PLY_VAR_FREQ	0x1d	/* playback variable frequency */
+#define AD1845_CLOCK		0x1d	/* crystal clock select and total power down */
+#define CS4235_RIGHT_MASTER	0x1d	/* right master output control */
+#define CS4231_REC_UPR_CNT	0x1e	/* record upper count */
+#define CS4231_REC_LWR_CNT	0x1f	/* record lower count */
+
+/* definitions for codec register select port - CODECP( REGSEL ) */
+
+#define CS4231_INIT		0x80	/* CODEC is initializing */
+#define CS4231_MCE		0x40	/* mode change enable */
+#define CS4231_TRD		0x20	/* transfer request disable */
+
+/* definitions for codec status register - CODECP( STATUS ) */
+
+#define CS4231_GLOBALIRQ	0x01	/* IRQ is active */
+
+/* definitions for codec irq status */
+
+#define CS4231_PLAYBACK_IRQ	0x10
+#define CS4231_RECORD_IRQ	0x20
+#define CS4231_TIMER_IRQ	0x40
+#define CS4231_ALL_IRQS		0x70
+#define CS4231_REC_UNDERRUN	0x08
+#define CS4231_REC_OVERRUN	0x04
+#define CS4231_PLY_OVERRUN	0x02
+#define CS4231_PLY_UNDERRUN	0x01
+
+/* definitions for CS4231_LEFT_INPUT and CS4231_RIGHT_INPUT registers */
+
+#define CS4231_ENABLE_MIC_GAIN	0x20
+
+#define CS4231_MIXS_LINE	0x00
+#define CS4231_MIXS_AUX1	0x40
+#define CS4231_MIXS_MIC		0x80
+#define CS4231_MIXS_ALL		0xc0
+
+/* definitions for clock and data format register - CS4231_PLAYBK_FORMAT */
+
+#define CS4231_LINEAR_8		0x00	/* 8-bit unsigned data */
+#define CS4231_ALAW_8		0x60	/* 8-bit A-law companded */
+#define CS4231_ULAW_8		0x20	/* 8-bit U-law companded */
+#define CS4231_LINEAR_16	0x40	/* 16-bit twos complement data - little endian */
+#define CS4231_LINEAR_16_BIG	0xc0	/* 16-bit twos complement data - big endian */
+#define CS4231_ADPCM_16		0xa0	/* 16-bit ADPCM */
+#define CS4231_STEREO		0x10	/* stereo mode */
+/* bits 3-1 define frequency divisor */
+#define CS4231_XTAL1		0x00	/* 24.576 crystal */
+#define CS4231_XTAL2		0x01	/* 16.9344 crystal */
+
+/* definitions for interface control register - CS4231_IFACE_CTRL */
+
+#define CS4231_RECORD_PIO	0x80	/* record PIO enable */
+#define CS4231_PLAYBACK_PIO	0x40	/* playback PIO enable */
+#define CS4231_CALIB_MODE	0x18	/* calibration mode bits */
+#define CS4231_AUTOCALIB	0x08	/* auto calibrate */
+#define CS4231_SINGLE_DMA	0x04	/* use single DMA channel */
+#define CS4231_RECORD_ENABLE	0x02	/* record enable */
+#define CS4231_PLAYBACK_ENABLE	0x01	/* playback enable */
+
+/* definitions for pin control register - CS4231_PIN_CTRL */
+
+#define CS4231_IRQ_ENABLE	0x02	/* enable IRQ */
+#define CS4231_XCTL1		0x40	/* external control #1 */
+#define CS4231_XCTL0		0x80	/* external control #0 */
+
+/* definitions for test and init register - CS4231_TEST_INIT */
+
+#define CS4231_CALIB_IN_PROGRESS 0x20	/* auto calibrate in progress */
+#define CS4231_DMA_REQUEST	0x10	/* DMA request in progress */
+
+/* definitions for misc control register - CS4231_MISC_INFO */
+
+#define CS4231_MODE2		0x40	/* MODE 2 */
+#define CS4231_IW_MODE3		0x6c	/* MODE 3 - InterWave enhanced mode */
+#define CS4231_4236_MODE3	0xe0	/* MODE 3 - CS4236+ enhanced mode */
+
+/* definitions for alternate feature 1 register - CS4231_ALT_FEATURE_1 */
+
+#define	CS4231_DACZ		0x01	/* zero DAC when underrun */
+#define CS4231_TIMER_ENABLE	0x40	/* codec timer enable */
+#define CS4231_OLB		0x80	/* output level bit */
+
+/* definitions for Extended Registers - CS4236+ */
+
+#define CS4236_REG(i23val)	(((i23val << 2) & 0x10) | ((i23val >> 4) & 0x0f))
+#define CS4236_I23VAL(reg)	((((reg)&0xf) << 4) | (((reg)&0x10) >> 2) | 0x8)
+
+#define CS4236_LEFT_LINE	0x08	/* left LINE alternate volume */
+#define CS4236_RIGHT_LINE	0x18	/* right LINE alternate volume */
+#define CS4236_LEFT_MIC		0x28	/* left MIC volume */
+#define CS4236_RIGHT_MIC	0x38	/* right MIC volume */
+#define CS4236_LEFT_MIX_CTRL	0x48	/* synthesis and left input mixer control */
+#define CS4236_RIGHT_MIX_CTRL	0x58	/* right input mixer control */
+#define CS4236_LEFT_FM		0x68	/* left FM volume */
+#define CS4236_RIGHT_FM		0x78	/* right FM volume */
+#define CS4236_LEFT_DSP		0x88	/* left DSP serial port volume */
+#define CS4236_RIGHT_DSP	0x98	/* right DSP serial port volume */
+#define CS4236_RIGHT_LOOPBACK	0xa8	/* right loopback monitor volume */
+#define CS4236_DAC_MUTE		0xb8	/* DAC mute and IFSE enable */
+#define CS4236_ADC_RATE		0xc8	/* indenpendent ADC sample frequency */
+#define CS4236_DAC_RATE		0xd8	/* indenpendent DAC sample frequency */
+#define CS4236_LEFT_MASTER	0xe8	/* left master digital audio volume */
+#define CS4236_RIGHT_MASTER	0xf8	/* right master digital audio volume */
+#define CS4236_LEFT_WAVE	0x0c	/* left wavetable serial port volume */
+#define CS4236_RIGHT_WAVE	0x1c	/* right wavetable serial port volume */
+#define CS4236_VERSION		0x9c	/* chip version and ID */
+
+/* defines for codec.mode */
+
+#define CS4231_MODE_NONE	0x0000
+#define CS4231_MODE_PLAY	0x0001
+#define CS4231_MODE_RECORD	0x0002
+#define CS4231_MODE_TIMER	0x0004
+#define CS4231_MODE_OPEN	(CS4231_MODE_PLAY|CS4231_MODE_RECORD|CS4231_MODE_TIMER)
+
+/* defines for codec.hardware */
+
+#define CS4231_HW_DETECT        0x0000	/* let CS4231 driver detect chip */
+#define CS4231_HW_DETECT3	0x0001	/* allow mode 3 */
+#define CS4231_HW_TYPE_MASK	0xff00	/* type mask */
+#define CS4231_HW_CS4231_MASK   0x0100	/* CS4231 serie */
+#define CS4231_HW_CS4231        0x0100	/* CS4231 chip */
+#define CS4231_HW_CS4231A       0x0101	/* CS4231A chip */
+#define CS4231_HW_AD1845	0x0102	/* AD1845 chip */
+#define CS4231_HW_CS4232_MASK   0x0200	/* CS4232 serie (has control ports) */
+#define CS4231_HW_CS4232        0x0200	/* CS4232 */
+#define CS4231_HW_CS4232A       0x0201	/* CS4232A */
+#define CS4231_HW_CS4236	0x0202	/* CS4236 */
+#define CS4231_HW_CS4236B_MASK	0x0400	/* CS4236B serie (has extended control regs) */
+#define CS4231_HW_CS4235	0x0400	/* CS4235 - Crystal Clear (tm) stereo enhancement */
+#define CS4231_HW_CS4236B       0x0401	/* CS4236B */
+#define CS4231_HW_CS4237B       0x0402	/* CS4237B - SRS 3D */
+#define CS4231_HW_CS4238B	0x0403	/* CS4238B - QSOUND 3D */
+#define CS4231_HW_CS4239	0x0404	/* CS4239 - Crystal Clear (tm) stereo enhancement */
+/* compatible, but clones */
+#define CS4231_HW_INTERWAVE     0x1000	/* InterWave chip */
+#define CS4231_HW_OPL3SA2       0x1001	/* OPL3-SA2 chip */
+
+/* defines for codec.hwshare */
+#define CS4231_HWSHARE_IRQ	(1<<0)
+#define CS4231_HWSHARE_DMA1	(1<<1)
+#define CS4231_HWSHARE_DMA2	(1<<2)
+
+typedef struct _snd_cs4231 cs4231_t;
+
+struct _snd_cs4231 {
+	unsigned long port;		/* base i/o port */
+#ifdef LEGACY_SUPPORT
+	struct resource *res_port;
+	unsigned long cport;		/* control base i/o port (CS4236) */
+	struct resource *res_cport;
+	int irq;			/* IRQ line */
+	int dma1;			/* playback DMA */
+	int dma2;			/* record DMA */
+#endif
+	unsigned short version;		/* version of CODEC chip */
+	unsigned short mode;		/* see to CS4231_MODE_XXXX */
+	unsigned short hardware;	/* see to CS4231_HW_XXXX */
+	unsigned short hwshare;		/* shared resources */
+	unsigned short single_dma:1,	/* forced single DMA mode (GUS 16-bit daughter board) or dma1 == dma2 */
+		       ebus_flag:1;	/* SPARC: EBUS present */
+
+#ifdef EBUS_SUPPORT
+	struct ebus_dma_info eb2c;
+        struct ebus_dma_info eb2p;
+#endif
+
+#if defined(SBUS_SUPPORT) || defined(EBUS_SUPPORT)
+	union {
+#ifdef SBUS_SUPPORT
+		struct sbus_dev         *sdev;
+#endif
+#ifdef EBUS_SUPPORT
+		struct pci_dev          *pdev;
+#endif
+	} dev_u;
+	unsigned int p_periods_sent;
+	unsigned int c_periods_sent;
+#endif
+
+	snd_card_t *card;
+	snd_pcm_t *pcm;
+	snd_pcm_substream_t *playback_substream;
+	snd_pcm_substream_t *capture_substream;
+	snd_timer_t *timer;
+
+	unsigned char image[32];	/* registers image */
+	unsigned char eimage[32];	/* extended registers image */
+	unsigned char cimage[16];	/* control registers image */
+	int mce_bit;
+	int calibrate_mute;
+	int sw_3d_bit;
+#ifdef LEGACY_SUPPORT
+	unsigned int p_dma_size;
+	unsigned int c_dma_size;
+#endif
+
+	spinlock_t reg_lock;
+	struct semaphore mce_mutex;
+	struct semaphore open_mutex;
+
+	int (*rate_constraint) (snd_pcm_runtime_t *runtime);
+	void (*set_playback_format) (cs4231_t *chip, snd_pcm_hw_params_t *hw_params, unsigned char pdfr);
+	void (*set_capture_format) (cs4231_t *chip, snd_pcm_hw_params_t *hw_params, unsigned char cdfr);
+	void (*trigger) (cs4231_t *chip, unsigned int what, int start);
+#ifdef CONFIG_PM
+	void (*suspend) (cs4231_t *chip);
+	void (*resume) (cs4231_t *chip);
+#endif
+	void *dma_private_data;
+#ifdef LEGACY_SUPPORT
+	int (*claim_dma) (cs4231_t *chip, void *dma_private_data, int dma);
+	int (*release_dma) (cs4231_t *chip, void *dma_private_data, int dma);
+#endif
+};
+
+/* exported functions */
+
+void snd_cs4231_out(cs4231_t *chip, unsigned char reg, unsigned char val);
+unsigned char snd_cs4231_in(cs4231_t *chip, unsigned char reg);
+void snd_cs4236_ext_out(cs4231_t *chip, unsigned char reg, unsigned char val);
+unsigned char snd_cs4236_ext_in(cs4231_t *chip, unsigned char reg);
+void snd_cs4231_mce_up(cs4231_t *chip);
+void snd_cs4231_mce_down(cs4231_t *chip);
+
+irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+
+const char *snd_cs4231_chip_id(cs4231_t *chip);
+
+int snd_cs4231_create(snd_card_t * card,
+		      unsigned long port,
+		      unsigned long cport,
+		      int irq, int dma1, int dma2,
+		      unsigned short hardware,
+		      unsigned short hwshare,
+		      cs4231_t ** rchip);
+int snd_cs4231_pcm(cs4231_t * chip, int device, snd_pcm_t **rpcm);
+int snd_cs4231_timer(cs4231_t * chip, int device, snd_timer_t **rtimer);
+int snd_cs4231_mixer(cs4231_t * chip);
+
+int snd_cs4236_create(snd_card_t * card,
+		      unsigned long port,
+		      unsigned long cport,
+		      int irq, int dma1, int dma2,
+		      unsigned short hardware,
+		      unsigned short hwshare,
+		      cs4231_t ** rchip);
+int snd_cs4236_pcm(cs4231_t * chip, int device, snd_pcm_t **rpcm);
+int snd_cs4236_mixer(cs4231_t * chip);
+
+/*
+ *  mixer library
+ */
+
+#define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_cs4231_info_single, \
+  .get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
+
+int snd_cs4231_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo);
+int snd_cs4231_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol);
+int snd_cs4231_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol);
+
+#define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_cs4231_info_double, \
+  .get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
+  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
+
+int snd_cs4231_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo);
+int snd_cs4231_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol);
+int snd_cs4231_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol);
+
+#endif /* __SOUND_CS4231_H */