/*
   *   ALSA driver for Intel ICH (i8x0) chipsets
   *

   *	Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>

   *
   *
   *   This code also contains alpha support for SiS 735 chipsets provided
   *   by Mike Pieper <mptei@users.sourceforge.net>. We have no datasheet
   *   for SiS735, so the code is not fully functional.
   *
   *
   *   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 <asm/io.h>
  #include <linux/delay.h>
  #include <linux/interrupt.h>
  #include <linux/init.h>
  #include <linux/pci.h>
  #include <linux/slab.h>
  #include <linux/moduleparam.h>
  #include <sound/core.h>
  #include <sound/pcm.h>
  #include <sound/ac97_codec.h>
  #include <sound/info.h>
  #include <sound/initval.h>
  /* for 440MX workaround */
  #include <asm/pgtable.h>
  #include <asm/cacheflush.h>

  MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");

  MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7012; Ali 5455");
  MODULE_LICENSE("GPL");
  MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
  		"{Intel,82901AB-ICH0},"
  		"{Intel,82801BA-ICH2},"
  		"{Intel,82801CA-ICH3},"
  		"{Intel,82801DB-ICH4},"
  		"{Intel,ICH5},"
  		"{Intel,ICH6},"
  		"{Intel,ICH7},"
  		"{Intel,6300ESB},"

  		"{Intel,ESB2},"

  		"{Intel,MX440},"
  		"{SiS,SI7012},"
  		"{NVidia,nForce Audio},"
  		"{NVidia,nForce2 Audio},"

  		"{NVidia,nForce3 Audio},"
  		"{NVidia,MCP04},"
  		"{NVidia,MCP501},"
  		"{NVidia,CK804},"
  		"{NVidia,CK8},"
  		"{NVidia,CK8S},"

  		"{AMD,AMD768},"
  		"{AMD,AMD8111},"
  	        "{ALI,M5455}}");

  static int index = SNDRV_DEFAULT_IDX1;	/* Index 0-MAX */
  static char *id = SNDRV_DEFAULT_STR1;	/* ID for this card */

  static int ac97_clock;

  static char *ac97_quirk;
  static int buggy_semaphore;

  static int buggy_irq = -1; /* auto-check */

  static int xbox;

  static int spdif_aclink = -1;

  
  module_param(index, int, 0444);

  MODULE_PARM_DESC(index, "Index value for Intel i8x0 soundcard.");

  module_param(id, charp, 0444);

  MODULE_PARM_DESC(id, "ID string for Intel i8x0 soundcard.");

  module_param(ac97_clock, int, 0444);

  MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = whitelist + auto-detect, 1 = force autodetect).");

  module_param(ac97_quirk, charp, 0444);

  MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");

  module_param(buggy_semaphore, bool, 0444);

  MODULE_PARM_DESC(buggy_semaphore, "Enable workaround for hardwares with problematic codec semaphores.");

  module_param(buggy_irq, bool, 0444);

  MODULE_PARM_DESC(buggy_irq, "Enable workaround for buggy interrupts on some motherboards.");

  module_param(xbox, bool, 0444);

  MODULE_PARM_DESC(xbox, "Set to 1 for Xbox, if you have problems with the AC'97 codec detection.");

  module_param(spdif_aclink, int, 0444);
  MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");

  /* just for backward compatibility */
  static int enable;

  module_param(enable, bool, 0444);

  static int joystick;
  module_param(joystick, int, 0444);

  /*
   *  Direct registers
   */

  enum { DEVICE_INTEL, DEVICE_INTEL_ICH4, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
  
  #define ICHREG(x) ICH_REG_##x
  
  #define DEFINE_REGSET(name,base) \
  enum { \
  	ICH_REG_##name##_BDBAR	= base + 0x0,	/* dword - buffer descriptor list base address */ \
  	ICH_REG_##name##_CIV	= base + 0x04,	/* byte - current index value */ \
  	ICH_REG_##name##_LVI	= base + 0x05,	/* byte - last valid index */ \
  	ICH_REG_##name##_SR	= base + 0x06,	/* byte - status register */ \
  	ICH_REG_##name##_PICB	= base + 0x08,	/* word - position in current buffer */ \
  	ICH_REG_##name##_PIV	= base + 0x0a,	/* byte - prefetched index value */ \
  	ICH_REG_##name##_CR	= base + 0x0b,	/* byte - control register */ \
  };
  
  /* busmaster blocks */
  DEFINE_REGSET(OFF, 0);		/* offset */
  DEFINE_REGSET(PI, 0x00);	/* PCM in */
  DEFINE_REGSET(PO, 0x10);	/* PCM out */
  DEFINE_REGSET(MC, 0x20);	/* Mic in */
  
  /* ICH4 busmaster blocks */
  DEFINE_REGSET(MC2, 0x40);	/* Mic in 2 */
  DEFINE_REGSET(PI2, 0x50);	/* PCM in 2 */
  DEFINE_REGSET(SP, 0x60);	/* SPDIF out */
  
  /* values for each busmaster block */
  
  /* LVI */
  #define ICH_REG_LVI_MASK		0x1f
  
  /* SR */
  #define ICH_FIFOE			0x10	/* FIFO error */
  #define ICH_BCIS			0x08	/* buffer completion interrupt status */
  #define ICH_LVBCI			0x04	/* last valid buffer completion interrupt */
  #define ICH_CELV			0x02	/* current equals last valid */
  #define ICH_DCH				0x01	/* DMA controller halted */
  
  /* PIV */
  #define ICH_REG_PIV_MASK		0x1f	/* mask */
  
  /* CR */
  #define ICH_IOCE			0x10	/* interrupt on completion enable */
  #define ICH_FEIE			0x08	/* fifo error interrupt enable */
  #define ICH_LVBIE			0x04	/* last valid buffer interrupt enable */
  #define ICH_RESETREGS			0x02	/* reset busmaster registers */
  #define ICH_STARTBM			0x01	/* start busmaster operation */
  
  
  /* global block */
  #define ICH_REG_GLOB_CNT		0x2c	/* dword - global control */
  #define   ICH_PCM_SPDIF_MASK	0xc0000000	/* s/pdif pcm slot mask (ICH4) */
  #define   ICH_PCM_SPDIF_NONE	0x00000000	/* reserved - undefined */
  #define   ICH_PCM_SPDIF_78	0x40000000	/* s/pdif pcm on slots 7&8 */
  #define   ICH_PCM_SPDIF_69	0x80000000	/* s/pdif pcm on slots 6&9 */
  #define   ICH_PCM_SPDIF_1011	0xc0000000	/* s/pdif pcm on slots 10&11 */
  #define   ICH_PCM_20BIT		0x00400000	/* 20-bit samples (ICH4) */

  #define   ICH_PCM_246_MASK	0x00300000	/* chan mask (not all chips) */
  #define   ICH_PCM_8		0x00300000      /* 8 channels (not all chips) */

  #define   ICH_PCM_6		0x00200000	/* 6 channels (not all chips) */
  #define   ICH_PCM_4		0x00100000	/* 4 channels (not all chips) */
  #define   ICH_PCM_2		0x00000000	/* 2 channels (stereo) */
  #define   ICH_SIS_PCM_246_MASK	0x000000c0	/* 6 channels (SIS7012) */
  #define   ICH_SIS_PCM_6		0x00000080	/* 6 channels (SIS7012) */
  #define   ICH_SIS_PCM_4		0x00000040	/* 4 channels (SIS7012) */
  #define   ICH_SIS_PCM_2		0x00000000	/* 2 channels (SIS7012) */
  #define   ICH_TRIE		0x00000040	/* tertiary resume interrupt enable */
  #define   ICH_SRIE		0x00000020	/* secondary resume interrupt enable */
  #define   ICH_PRIE		0x00000010	/* primary resume interrupt enable */
  #define   ICH_ACLINK		0x00000008	/* AClink shut off */
  #define   ICH_AC97WARM		0x00000004	/* AC'97 warm reset */
  #define   ICH_AC97COLD		0x00000002	/* AC'97 cold reset */
  #define   ICH_GIE		0x00000001	/* GPI interrupt enable */
  #define ICH_REG_GLOB_STA		0x30	/* dword - global status */
  #define   ICH_TRI		0x20000000	/* ICH4: tertiary (AC_SDIN2) resume interrupt */
  #define   ICH_TCR		0x10000000	/* ICH4: tertiary (AC_SDIN2) codec ready */
  #define   ICH_BCS		0x08000000	/* ICH4: bit clock stopped */
  #define   ICH_SPINT		0x04000000	/* ICH4: S/PDIF interrupt */
  #define   ICH_P2INT		0x02000000	/* ICH4: PCM2-In interrupt */
  #define   ICH_M2INT		0x01000000	/* ICH4: Mic2-In interrupt */
  #define   ICH_SAMPLE_CAP	0x00c00000	/* ICH4: sample capability bits (RO) */
  #define   ICH_SAMPLE_16_20	0x00400000	/* ICH4: 16- and 20-bit samples */
  #define   ICH_MULTICHAN_CAP	0x00300000	/* ICH4: multi-channel capability bits (RO) */

  #define   ICH_SIS_TRI		0x00080000	/* SIS: tertiary resume irq */
  #define   ICH_SIS_TCR		0x00040000	/* SIS: tertiary codec ready */

  #define   ICH_MD3		0x00020000	/* modem power down semaphore */
  #define   ICH_AD3		0x00010000	/* audio power down semaphore */
  #define   ICH_RCS		0x00008000	/* read completion status */
  #define   ICH_BIT3		0x00004000	/* bit 3 slot 12 */
  #define   ICH_BIT2		0x00002000	/* bit 2 slot 12 */
  #define   ICH_BIT1		0x00001000	/* bit 1 slot 12 */
  #define   ICH_SRI		0x00000800	/* secondary (AC_SDIN1) resume interrupt */
  #define   ICH_PRI		0x00000400	/* primary (AC_SDIN0) resume interrupt */
  #define   ICH_SCR		0x00000200	/* secondary (AC_SDIN1) codec ready */
  #define   ICH_PCR		0x00000100	/* primary (AC_SDIN0) codec ready */
  #define   ICH_MCINT		0x00000080	/* MIC capture interrupt */
  #define   ICH_POINT		0x00000040	/* playback interrupt */
  #define   ICH_PIINT		0x00000020	/* capture interrupt */
  #define   ICH_NVSPINT		0x00000010	/* nforce spdif interrupt */
  #define   ICH_MOINT		0x00000004	/* modem playback interrupt */
  #define   ICH_MIINT		0x00000002	/* modem capture interrupt */
  #define   ICH_GSCI		0x00000001	/* GPI status change interrupt */
  #define ICH_REG_ACC_SEMA		0x34	/* byte - codec write semaphore */
  #define   ICH_CAS		0x01		/* codec access semaphore */
  #define ICH_REG_SDM		0x80
  #define   ICH_DI2L_MASK		0x000000c0	/* PCM In 2, Mic In 2 data in line */
  #define   ICH_DI2L_SHIFT	6
  #define   ICH_DI1L_MASK		0x00000030	/* PCM In 1, Mic In 1 data in line */
  #define   ICH_DI1L_SHIFT	4
  #define   ICH_SE		0x00000008	/* steer enable */
  #define   ICH_LDI_MASK		0x00000003	/* last codec read data input */
  
  #define ICH_MAX_FRAGS		32		/* max hw frags */
  
  
  /*
   * registers for Ali5455
   */
  
  /* ALi 5455 busmaster blocks */
  DEFINE_REGSET(AL_PI, 0x40);	/* ALi PCM in */
  DEFINE_REGSET(AL_PO, 0x50);	/* Ali PCM out */
  DEFINE_REGSET(AL_MC, 0x60);	/* Ali Mic in */
  DEFINE_REGSET(AL_CDC_SPO, 0x70);	/* Ali Codec SPDIF out */
  DEFINE_REGSET(AL_CENTER, 0x80);		/* Ali center out */
  DEFINE_REGSET(AL_LFE, 0x90);		/* Ali center out */
  DEFINE_REGSET(AL_CLR_SPI, 0xa0);	/* Ali Controller SPDIF in */
  DEFINE_REGSET(AL_CLR_SPO, 0xb0);	/* Ali Controller SPDIF out */
  DEFINE_REGSET(AL_I2S, 0xc0);	/* Ali I2S in */
  DEFINE_REGSET(AL_PI2, 0xd0);	/* Ali PCM2 in */
  DEFINE_REGSET(AL_MC2, 0xe0);	/* Ali Mic2 in */
  
  enum {
  	ICH_REG_ALI_SCR = 0x00,		/* System Control Register */
  	ICH_REG_ALI_SSR = 0x04,		/* System Status Register  */
  	ICH_REG_ALI_DMACR = 0x08,	/* DMA Control Register    */
  	ICH_REG_ALI_FIFOCR1 = 0x0c,	/* FIFO Control Register 1  */
  	ICH_REG_ALI_INTERFACECR = 0x10,	/* Interface Control Register */
  	ICH_REG_ALI_INTERRUPTCR = 0x14,	/* Interrupt control Register */
  	ICH_REG_ALI_INTERRUPTSR = 0x18,	/* Interrupt  Status Register */
  	ICH_REG_ALI_FIFOCR2 = 0x1c,	/* FIFO Control Register 2   */
  	ICH_REG_ALI_CPR = 0x20,		/* Command Port Register     */
  	ICH_REG_ALI_CPR_ADDR = 0x22,	/* ac97 addr write */
  	ICH_REG_ALI_SPR = 0x24,		/* Status Port Register      */
  	ICH_REG_ALI_SPR_ADDR = 0x26,	/* ac97 addr read */
  	ICH_REG_ALI_FIFOCR3 = 0x2c,	/* FIFO Control Register 3  */
  	ICH_REG_ALI_TTSR = 0x30,	/* Transmit Tag Slot Register */
  	ICH_REG_ALI_RTSR = 0x34,	/* Receive Tag Slot  Register */
  	ICH_REG_ALI_CSPSR = 0x38,	/* Command/Status Port Status Register */
  	ICH_REG_ALI_CAS = 0x3c,		/* Codec Write Semaphore Register */
  	ICH_REG_ALI_HWVOL = 0xf0,	/* hardware volume control/status */
  	ICH_REG_ALI_I2SCR = 0xf4,	/* I2S control/status */
  	ICH_REG_ALI_SPDIFCSR = 0xf8,	/* spdif channel status register  */
  	ICH_REG_ALI_SPDIFICS = 0xfc,	/* spdif interface control/status  */
  };
  
  #define ALI_CAS_SEM_BUSY	0x80000000
  #define ALI_CPR_ADDR_SECONDARY	0x100
  #define ALI_CPR_ADDR_READ	0x80
  #define ALI_CSPSR_CODEC_READY	0x08
  #define ALI_CSPSR_READ_OK	0x02
  #define ALI_CSPSR_WRITE_OK	0x01
  
  /* interrupts for the whole chip by interrupt status register finish */
   
  #define ALI_INT_MICIN2		(1<<26)
  #define ALI_INT_PCMIN2		(1<<25)
  #define ALI_INT_I2SIN		(1<<24)
  #define ALI_INT_SPDIFOUT	(1<<23)	/* controller spdif out INTERRUPT */
  #define ALI_INT_SPDIFIN		(1<<22)
  #define ALI_INT_LFEOUT		(1<<21)
  #define ALI_INT_CENTEROUT	(1<<20)
  #define ALI_INT_CODECSPDIFOUT	(1<<19)
  #define ALI_INT_MICIN		(1<<18)
  #define ALI_INT_PCMOUT		(1<<17)
  #define ALI_INT_PCMIN		(1<<16)
  #define ALI_INT_CPRAIS		(1<<7)	/* command port available */
  #define ALI_INT_SPRAIS		(1<<5)	/* status port available */
  #define ALI_INT_GPIO		(1<<1)

  #define ALI_INT_MASK		(ALI_INT_SPDIFOUT|ALI_INT_CODECSPDIFOUT|\
  				 ALI_INT_MICIN|ALI_INT_PCMOUT|ALI_INT_PCMIN)

  
  #define ICH_ALI_SC_RESET	(1<<31)	/* master reset */
  #define ICH_ALI_SC_AC97_DBL	(1<<30)
  #define ICH_ALI_SC_CODEC_SPDF	(3<<20)	/* 1=7/8, 2=6/9, 3=10/11 */
  #define ICH_ALI_SC_IN_BITS	(3<<18)
  #define ICH_ALI_SC_OUT_BITS	(3<<16)
  #define ICH_ALI_SC_6CH_CFG	(3<<14)
  #define ICH_ALI_SC_PCM_4	(1<<8)
  #define ICH_ALI_SC_PCM_6	(2<<8)
  #define ICH_ALI_SC_PCM_246_MASK	(3<<8)
  
  #define ICH_ALI_SS_SEC_ID	(3<<5)
  #define ICH_ALI_SS_PRI_ID	(3<<3)
  
  #define ICH_ALI_IF_AC97SP	(1<<21)
  #define ICH_ALI_IF_MC		(1<<20)
  #define ICH_ALI_IF_PI		(1<<19)
  #define ICH_ALI_IF_MC2		(1<<18)
  #define ICH_ALI_IF_PI2		(1<<17)
  #define ICH_ALI_IF_LINE_SRC	(1<<15)	/* 0/1 = slot 3/6 */
  #define ICH_ALI_IF_MIC_SRC	(1<<14)	/* 0/1 = slot 3/6 */
  #define ICH_ALI_IF_SPDF_SRC	(3<<12)	/* 00 = PCM, 01 = AC97-in, 10 = spdif-in, 11 = i2s */
  #define ICH_ALI_IF_AC97_OUT	(3<<8)	/* 00 = PCM, 10 = spdif-in, 11 = i2s */
  #define ICH_ALI_IF_PO_SPDF	(1<<3)
  #define ICH_ALI_IF_PO		(1<<1)
  
  /*
   *  
   */

  enum {
  	ICHD_PCMIN,
  	ICHD_PCMOUT,
  	ICHD_MIC,
  	ICHD_MIC2,
  	ICHD_PCM2IN,
  	ICHD_SPBAR,
  	ICHD_LAST = ICHD_SPBAR
  };
  enum {
  	NVD_PCMIN,
  	NVD_PCMOUT,
  	NVD_MIC,
  	NVD_SPBAR,
  	NVD_LAST = NVD_SPBAR
  };
  enum {
  	ALID_PCMIN,
  	ALID_PCMOUT,
  	ALID_MIC,
  	ALID_AC97SPDIFOUT,
  	ALID_SPDIFIN,
  	ALID_SPDIFOUT,
  	ALID_LAST = ALID_SPDIFOUT
  };

  #define get_ichdev(substream) (substream->runtime->private_data)

  struct ichdev {

  	unsigned int ichd;			/* ich device number */
  	unsigned long reg_offset;		/* offset to bmaddr */
  	u32 *bdbar;				/* CPU address (32bit) */
  	unsigned int bdbar_addr;		/* PCI bus address (32bit) */

  	struct snd_pcm_substream *substream;

  	unsigned int physbuf;			/* physical address (32bit) */
          unsigned int size;
          unsigned int fragsize;
          unsigned int fragsize1;
          unsigned int position;
  	unsigned int pos_shift;

  	unsigned int last_pos;

          int frags;
          int lvi;
          int lvi_frag;
  	int civ;
  	int ack;
  	int ack_reload;
  	unsigned int ack_bit;
  	unsigned int roff_sr;
  	unsigned int roff_picb;
  	unsigned int int_sta_mask;		/* interrupt status mask */
  	unsigned int ali_slot;			/* ALI DMA slot */
  	struct ac97_pcm *pcm;
  	int pcm_open_flag;
  	unsigned int page_attr_changed: 1;

  	unsigned int suspended: 1;

  };

  struct intel8x0 {

  	unsigned int device_type;
  
  	int irq;

  	void __iomem *addr;
  	void __iomem *bmaddr;

  
  	struct pci_dev *pci;

  	struct snd_card *card;

  
  	int pcm_devs;

  	struct snd_pcm *pcm[6];
  	struct ichdev ichd[6];

  
  	unsigned multi4: 1,
  		 multi6: 1,

  		 multi8 :1,

  		 dra: 1,
  		 smp20bit: 1;
  	unsigned in_ac97_init: 1,
  		 in_sdin_init: 1;
  	unsigned in_measurement: 1;	/* during ac97 clock measurement */
  	unsigned fix_nocache: 1; 	/* workaround for 440MX */
  	unsigned buggy_irq: 1;		/* workaround for buggy mobos */
  	unsigned xbox: 1;		/* workaround for Xbox AC'97 detection */

  	unsigned buggy_semaphore: 1;	/* workaround for buggy codec semaphore */

  
  	int spdif_idx;	/* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */

  	unsigned int sdm_saved;	/* SDM reg value */

  	struct snd_ac97_bus *ac97_bus;
  	struct snd_ac97 *ac97[3];

  	unsigned int ac97_sdin[3];

  	unsigned int max_codecs, ncodecs;
  	unsigned int *codec_bit;
  	unsigned int codec_isr_bits;
  	unsigned int codec_ready_bits;

  
  	spinlock_t reg_lock;
  	
  	u32 bdbars_count;
  	struct snd_dma_buffer bdbars;
  	u32 int_sta_reg;		/* interrupt status register */
  	u32 int_sta_mask;		/* interrupt status mask */
  };

  static DEFINE_PCI_DEVICE_TABLE(snd_intel8x0_ids) = {

  	{ PCI_VDEVICE(INTEL, 0x2415), DEVICE_INTEL },	/* 82801AA */
  	{ PCI_VDEVICE(INTEL, 0x2425), DEVICE_INTEL },	/* 82901AB */
  	{ PCI_VDEVICE(INTEL, 0x2445), DEVICE_INTEL },	/* 82801BA */
  	{ PCI_VDEVICE(INTEL, 0x2485), DEVICE_INTEL },	/* ICH3 */
  	{ PCI_VDEVICE(INTEL, 0x24c5), DEVICE_INTEL_ICH4 }, /* ICH4 */
  	{ PCI_VDEVICE(INTEL, 0x24d5), DEVICE_INTEL_ICH4 }, /* ICH5 */
  	{ PCI_VDEVICE(INTEL, 0x25a6), DEVICE_INTEL_ICH4 }, /* ESB */
  	{ PCI_VDEVICE(INTEL, 0x266e), DEVICE_INTEL_ICH4 }, /* ICH6 */
  	{ PCI_VDEVICE(INTEL, 0x27de), DEVICE_INTEL_ICH4 }, /* ICH7 */
  	{ PCI_VDEVICE(INTEL, 0x2698), DEVICE_INTEL_ICH4 }, /* ESB2 */
  	{ PCI_VDEVICE(INTEL, 0x7195), DEVICE_INTEL },	/* 440MX */
  	{ PCI_VDEVICE(SI, 0x7012), DEVICE_SIS },	/* SI7012 */
  	{ PCI_VDEVICE(NVIDIA, 0x01b1), DEVICE_NFORCE },	/* NFORCE */
  	{ PCI_VDEVICE(NVIDIA, 0x003a), DEVICE_NFORCE },	/* MCP04 */
  	{ PCI_VDEVICE(NVIDIA, 0x006a), DEVICE_NFORCE },	/* NFORCE2 */
  	{ PCI_VDEVICE(NVIDIA, 0x0059), DEVICE_NFORCE },	/* CK804 */
  	{ PCI_VDEVICE(NVIDIA, 0x008a), DEVICE_NFORCE },	/* CK8 */
  	{ PCI_VDEVICE(NVIDIA, 0x00da), DEVICE_NFORCE },	/* NFORCE3 */
  	{ PCI_VDEVICE(NVIDIA, 0x00ea), DEVICE_NFORCE },	/* CK8S */
  	{ PCI_VDEVICE(NVIDIA, 0x026b), DEVICE_NFORCE },	/* MCP51 */
  	{ PCI_VDEVICE(AMD, 0x746d), DEVICE_INTEL },	/* AMD8111 */
  	{ PCI_VDEVICE(AMD, 0x7445), DEVICE_INTEL },	/* AMD768 */
  	{ PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */

  	{ 0, }
  };
  
  MODULE_DEVICE_TABLE(pci, snd_intel8x0_ids);
  
  /*
   *  Lowlevel I/O - busmaster
   */

  static inline u8 igetbyte(struct intel8x0 *chip, u32 offset)

  {

  	return ioread8(chip->bmaddr + offset);

  }

  static inline u16 igetword(struct intel8x0 *chip, u32 offset)

  {

  	return ioread16(chip->bmaddr + offset);

  }

  static inline u32 igetdword(struct intel8x0 *chip, u32 offset)

  {

  	return ioread32(chip->bmaddr + offset);

  }

  static inline void iputbyte(struct intel8x0 *chip, u32 offset, u8 val)

  {

  	iowrite8(val, chip->bmaddr + offset);

  }

  static inline void iputword(struct intel8x0 *chip, u32 offset, u16 val)

  {

  	iowrite16(val, chip->bmaddr + offset);

  }

  static inline void iputdword(struct intel8x0 *chip, u32 offset, u32 val)

  {

  	iowrite32(val, chip->bmaddr + offset);

  }
  
  /*
   *  Lowlevel I/O - AC'97 registers
   */

  static inline u16 iagetword(struct intel8x0 *chip, u32 offset)

  {

  	return ioread16(chip->addr + offset);

  }

  static inline void iaputword(struct intel8x0 *chip, u32 offset, u16 val)

  {

  	iowrite16(val, chip->addr + offset);

  }
  
  /*
   *  Basic I/O
   */
  
  /*
   * access to AC97 codec via normal i/o (for ICH and SIS7012)
   */

  static int snd_intel8x0_codec_semaphore(struct intel8x0 *chip, unsigned int codec)

  {
  	int time;
  	
  	if (codec > 2)
  		return -EIO;
  	if (chip->in_sdin_init) {
  		/* we don't know the ready bit assignment at the moment */
  		/* so we check any */

  		codec = chip->codec_isr_bits;

  	} else {

  		codec = chip->codec_bit[chip->ac97_sdin[codec]];

  	}
  
  	/* codec ready ? */
  	if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
  		return -EIO;

  	if (chip->buggy_semaphore)
  		return 0; /* just ignore ... */

  	/* Anyone holding a semaphore for 1 msec should be shot... */
  	time = 100;
        	do {
        		if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
        			return 0;
  		udelay(10);
  	} while (time--);

  	/* access to some forbidden (non existent) ac97 registers will not

  	 * reset the semaphore. So even if you don't get the semaphore, still
  	 * continue the access. We don't need the semaphore anyway. */

  	snd_printk(KERN_ERR "codec_semaphore: semaphore is not ready [0x%x][0x%x]
  ",

  			igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
  	iagetword(chip, 0);	/* clear semaphore flag */
  	/* I don't care about the semaphore */
  	return -EBUSY;
  }
   

  static void snd_intel8x0_codec_write(struct snd_ac97 *ac97,

  				     unsigned short reg,
  				     unsigned short val)
  {

  	struct intel8x0 *chip = ac97->private_data;

  	
  	if (snd_intel8x0_codec_semaphore(chip, ac97->num) < 0) {
  		if (! chip->in_ac97_init)

  			snd_printk(KERN_ERR "codec_write %d: semaphore is not ready for register 0x%x
  ", ac97->num, reg);

  	}
  	iaputword(chip, reg + ac97->num * 0x80, val);
  }

  static unsigned short snd_intel8x0_codec_read(struct snd_ac97 *ac97,

  					      unsigned short reg)
  {

  	struct intel8x0 *chip = ac97->private_data;

  	unsigned short res;
  	unsigned int tmp;
  
  	if (snd_intel8x0_codec_semaphore(chip, ac97->num) < 0) {
  		if (! chip->in_ac97_init)

  			snd_printk(KERN_ERR "codec_read %d: semaphore is not ready for register 0x%x
  ", ac97->num, reg);

  		res = 0xffff;
  	} else {
  		res = iagetword(chip, reg + ac97->num * 0x80);
  		if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
  			/* reset RCS and preserve other R/WC bits */

  			iputdword(chip, ICHREG(GLOB_STA), tmp &

  				  ~(chip->codec_ready_bits | ICH_GSCI));

  			if (! chip->in_ac97_init)

  				snd_printk(KERN_ERR "codec_read %d: read timeout for register 0x%x
  ", ac97->num, reg);

  			res = 0xffff;
  		}
  	}
  	return res;
  }

  static void __devinit snd_intel8x0_codec_read_test(struct intel8x0 *chip,
  						   unsigned int codec)

  {
  	unsigned int tmp;
  
  	if (snd_intel8x0_codec_semaphore(chip, codec) >= 0) {
  		iagetword(chip, codec * 0x80);
  		if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
  			/* reset RCS and preserve other R/WC bits */

  			iputdword(chip, ICHREG(GLOB_STA), tmp &

  				  ~(chip->codec_ready_bits | ICH_GSCI));

  		}
  	}
  }
  
  /*
   * access to AC97 for Ali5455
   */

  static int snd_intel8x0_ali_codec_ready(struct intel8x0 *chip, int mask)

  {
  	int count = 0;
  	for (count = 0; count < 0x7f; count++) {
  		int val = igetbyte(chip, ICHREG(ALI_CSPSR));
  		if (val & mask)
  			return 0;
  	}

  	if (! chip->in_ac97_init)
  		snd_printd(KERN_WARNING "intel8x0: AC97 codec ready timeout.
  ");

  	return -EBUSY;
  }

  static int snd_intel8x0_ali_codec_semaphore(struct intel8x0 *chip)

  {
  	int time = 100;

  	if (chip->buggy_semaphore)
  		return 0; /* just ignore ... */

  	while (--time && (igetdword(chip, ICHREG(ALI_CAS)) & ALI_CAS_SEM_BUSY))

  		udelay(1);

  	if (! time && ! chip->in_ac97_init)

  		snd_printk(KERN_WARNING "ali_codec_semaphore timeout
  ");
  	return snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_CODEC_READY);
  }

  static unsigned short snd_intel8x0_ali_codec_read(struct snd_ac97 *ac97, unsigned short reg)

  {

  	struct intel8x0 *chip = ac97->private_data;

  	unsigned short data = 0xffff;
  
  	if (snd_intel8x0_ali_codec_semaphore(chip))
  		goto __err;
  	reg |= ALI_CPR_ADDR_READ;
  	if (ac97->num)
  		reg |= ALI_CPR_ADDR_SECONDARY;
  	iputword(chip, ICHREG(ALI_CPR_ADDR), reg);
  	if (snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_READ_OK))
  		goto __err;
  	data = igetword(chip, ICHREG(ALI_SPR));
   __err:
  	return data;
  }

  static void snd_intel8x0_ali_codec_write(struct snd_ac97 *ac97, unsigned short reg,
  					 unsigned short val)

  {

  	struct intel8x0 *chip = ac97->private_data;

  
  	if (snd_intel8x0_ali_codec_semaphore(chip))
  		return;
  	iputword(chip, ICHREG(ALI_CPR), val);
  	if (ac97->num)
  		reg |= ALI_CPR_ADDR_SECONDARY;
  	iputword(chip, ICHREG(ALI_CPR_ADDR), reg);
  	snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_WRITE_OK);
  }
  
  
  /*
   * DMA I/O
   */

  static void snd_intel8x0_setup_periods(struct intel8x0 *chip, struct ichdev *ichdev) 

  {
  	int idx;
  	u32 *bdbar = ichdev->bdbar;
  	unsigned long port = ichdev->reg_offset;
  
  	iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
  	if (ichdev->size == ichdev->fragsize) {
  		ichdev->ack_reload = ichdev->ack = 2;
  		ichdev->fragsize1 = ichdev->fragsize >> 1;
  		for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
  			bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
  			bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
  						     ichdev->fragsize1 >> ichdev->pos_shift);
  			bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
  			bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
  						     ichdev->fragsize1 >> ichdev->pos_shift);
  		}
  		ichdev->frags = 2;
  	} else {
  		ichdev->ack_reload = ichdev->ack = 1;
  		ichdev->fragsize1 = ichdev->fragsize;
  		for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {

  			bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf +
  						     (((idx >> 1) * ichdev->fragsize) %
  						      ichdev->size));

  			bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
  						     ichdev->fragsize >> ichdev->pos_shift);

  #if 0

  			printk(KERN_DEBUG "bdbar[%i] = 0x%x [0x%x]
  ",

  			       idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
  #endif

  		}
  		ichdev->frags = ichdev->size / ichdev->fragsize;
  	}
  	iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
  	ichdev->civ = 0;
  	iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
  	ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
  	ichdev->position = 0;
  #if 0

  	printk(KERN_DEBUG "lvi_frag = %i, frags = %i, period_size = 0x%x, "
  	       "period_size1 = 0x%x
  ",
  	       ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
  	       ichdev->fragsize1);

  #endif
  	/* clear interrupts */
  	iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
  }
  
  #ifdef __i386__
  /*
   * Intel 82443MX running a 100MHz processor system bus has a hardware bug,
   * which aborts PCI busmaster for audio transfer.  A workaround is to set
   * the pages as non-cached.  For details, see the errata in

   *	http://download.intel.com/design/chipsets/specupdt/24505108.pdf

   */
  static void fill_nocache(void *buf, int size, int nocache)
  {
  	size = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;

  	if (nocache)
  		set_pages_uc(virt_to_page(buf), size);
  	else
  		set_pages_wb(virt_to_page(buf), size);

  }
  #else

  #define fill_nocache(buf, size, nocache) do { ; } while (0)

  #endif
  
  /*
   *  Interrupt handler
   */

  static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ichdev)

  {
  	unsigned long port = ichdev->reg_offset;

  	unsigned long flags;

  	int status, civ, i, step;
  	int ack = 0;

  	spin_lock_irqsave(&chip->reg_lock, flags);

  	status = igetbyte(chip, port + ichdev->roff_sr);
  	civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
  	if (!(status & ICH_BCIS)) {
  		step = 0;
  	} else if (civ == ichdev->civ) {
  		// snd_printd("civ same %d
  ", civ);
  		step = 1;
  		ichdev->civ++;
  		ichdev->civ &= ICH_REG_LVI_MASK;
  	} else {
  		step = civ - ichdev->civ;
  		if (step < 0)
  			step += ICH_REG_LVI_MASK + 1;
  		// if (step != 1)
  		//	snd_printd("step = %d, %d -> %d
  ", step, ichdev->civ, civ);
  		ichdev->civ = civ;
  	}
  
  	ichdev->position += step * ichdev->fragsize1;
  	if (! chip->in_measurement)
  		ichdev->position %= ichdev->size;
  	ichdev->lvi += step;
  	ichdev->lvi &= ICH_REG_LVI_MASK;
  	iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
  	for (i = 0; i < step; i++) {
  		ichdev->lvi_frag++;
  		ichdev->lvi_frag %= ichdev->frags;
  		ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf + ichdev->lvi_frag * ichdev->fragsize1);

  #if 0

  	printk(KERN_DEBUG "new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, "
  	       "all = 0x%x, 0x%x
  ",

  	       ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
  	       ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
  	       inl(port + 4), inb(port + ICH_REG_OFF_CR));
  #endif

  		if (--ichdev->ack == 0) {
  			ichdev->ack = ichdev->ack_reload;
  			ack = 1;
  		}
  	}

  	spin_unlock_irqrestore(&chip->reg_lock, flags);

  	if (ack && ichdev->substream) {
  		snd_pcm_period_elapsed(ichdev->substream);
  	}
  	iputbyte(chip, port + ichdev->roff_sr,
  		 status & (ICH_FIFOE | ICH_BCIS | ICH_LVBCI));
  }

  static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id)

  {

  	struct intel8x0 *chip = dev_id;
  	struct ichdev *ichdev;

  	unsigned int status;
  	unsigned int i;
  
  	status = igetdword(chip, chip->int_sta_reg);
  	if (status == 0xffffffff)	/* we are not yet resumed */
  		return IRQ_NONE;
  
  	if ((status & chip->int_sta_mask) == 0) {
  		if (status) {
  			/* ack */
  			iputdword(chip, chip->int_sta_reg, status);
  			if (! chip->buggy_irq)
  				status = 0;
  		}
  		return IRQ_RETVAL(status);
  	}
  
  	for (i = 0; i < chip->bdbars_count; i++) {
  		ichdev = &chip->ichd[i];
  		if (status & ichdev->int_sta_mask)
  			snd_intel8x0_update(chip, ichdev);
  	}
  
  	/* ack them */
  	iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
  	
  	return IRQ_HANDLED;
  }
  
  /*
   *  PCM part
   */

  static int snd_intel8x0_pcm_trigger(struct snd_pcm_substream *substream, int cmd)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct ichdev *ichdev = get_ichdev(substream);

  	unsigned char val = 0;
  	unsigned long port = ichdev->reg_offset;
  
  	switch (cmd) {

  	case SNDRV_PCM_TRIGGER_RESUME:

  		ichdev->suspended = 0;
  		/* fallthru */
  	case SNDRV_PCM_TRIGGER_START:

  	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:

  		val = ICH_IOCE | ICH_STARTBM;

  		ichdev->last_pos = ichdev->position;

  		break;

  	case SNDRV_PCM_TRIGGER_SUSPEND:

  		ichdev->suspended = 1;
  		/* fallthru */
  	case SNDRV_PCM_TRIGGER_STOP:

  		val = 0;
  		break;
  	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
  		val = ICH_IOCE;
  		break;

  	default:
  		return -EINVAL;
  	}
  	iputbyte(chip, port + ICH_REG_OFF_CR, val);
  	if (cmd == SNDRV_PCM_TRIGGER_STOP) {
  		/* wait until DMA stopped */
  		while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
  		/* reset whole DMA things */
  		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
  	}
  	return 0;
  }

  static int snd_intel8x0_ali_trigger(struct snd_pcm_substream *substream, int cmd)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct ichdev *ichdev = get_ichdev(substream);

  	unsigned long port = ichdev->reg_offset;

  	static int fiforeg[] = {
  		ICHREG(ALI_FIFOCR1), ICHREG(ALI_FIFOCR2), ICHREG(ALI_FIFOCR3)
  	};

  	unsigned int val, fifo;
  
  	val = igetdword(chip, ICHREG(ALI_DMACR));
  	switch (cmd) {

  	case SNDRV_PCM_TRIGGER_RESUME:
  		ichdev->suspended = 0;
  		/* fallthru */

  	case SNDRV_PCM_TRIGGER_START:
  	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:

  		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
  			/* clear FIFO for synchronization of channels */
  			fifo = igetdword(chip, fiforeg[ichdev->ali_slot / 4]);
  			fifo &= ~(0xff << (ichdev->ali_slot % 4));  
  			fifo |= 0x83 << (ichdev->ali_slot % 4); 
  			iputdword(chip, fiforeg[ichdev->ali_slot / 4], fifo);
  		}
  		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE);
  		val &= ~(1 << (ichdev->ali_slot + 16)); /* clear PAUSE flag */

  		/* start DMA */
  		iputdword(chip, ICHREG(ALI_DMACR), val | (1 << ichdev->ali_slot));

  		break;

  	case SNDRV_PCM_TRIGGER_SUSPEND:
  		ichdev->suspended = 1;
  		/* fallthru */

  	case SNDRV_PCM_TRIGGER_STOP:
  	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:

  		/* pause */
  		iputdword(chip, ICHREG(ALI_DMACR), val | (1 << (ichdev->ali_slot + 16)));

  		iputbyte(chip, port + ICH_REG_OFF_CR, 0);
  		while (igetbyte(chip, port + ICH_REG_OFF_CR))
  			;
  		if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
  			break;
  		/* reset whole DMA things */
  		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
  		/* clear interrupts */

  		iputbyte(chip, port + ICH_REG_OFF_SR,
  			 igetbyte(chip, port + ICH_REG_OFF_SR) | 0x1e);

  		iputdword(chip, ICHREG(ALI_INTERRUPTSR),
  			  igetdword(chip, ICHREG(ALI_INTERRUPTSR)) & ichdev->int_sta_mask);
  		break;
  	default:
  		return -EINVAL;
  	}
  	return 0;
  }

  static int snd_intel8x0_hw_params(struct snd_pcm_substream *substream,
  				  struct snd_pcm_hw_params *hw_params)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct ichdev *ichdev = get_ichdev(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	int dbl = params_rate(hw_params) > 48000;
  	int err;
  
  	if (chip->fix_nocache && ichdev->page_attr_changed) {
  		fill_nocache(runtime->dma_area, runtime->dma_bytes, 0); /* clear */
  		ichdev->page_attr_changed = 0;
  	}
  	err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
  	if (err < 0)
  		return err;
  	if (chip->fix_nocache) {
  		if (runtime->dma_area && ! ichdev->page_attr_changed) {
  			fill_nocache(runtime->dma_area, runtime->dma_bytes, 1);
  			ichdev->page_attr_changed = 1;
  		}
  	}
  	if (ichdev->pcm_open_flag) {
  		snd_ac97_pcm_close(ichdev->pcm);
  		ichdev->pcm_open_flag = 0;
  	}
  	err = snd_ac97_pcm_open(ichdev->pcm, params_rate(hw_params),
  				params_channels(hw_params),
  				ichdev->pcm->r[dbl].slots);
  	if (err >= 0) {
  		ichdev->pcm_open_flag = 1;
  		/* Force SPDIF setting */
  		if (ichdev->ichd == ICHD_PCMOUT && chip->spdif_idx < 0)

  			snd_ac97_set_rate(ichdev->pcm->r[0].codec[0], AC97_SPDIF,
  					  params_rate(hw_params));

  	}
  	return err;
  }

  static int snd_intel8x0_hw_free(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct ichdev *ichdev = get_ichdev(substream);

  
  	if (ichdev->pcm_open_flag) {
  		snd_ac97_pcm_close(ichdev->pcm);
  		ichdev->pcm_open_flag = 0;
  	}
  	if (chip->fix_nocache && ichdev->page_attr_changed) {
  		fill_nocache(substream->runtime->dma_area, substream->runtime->dma_bytes, 0);
  		ichdev->page_attr_changed = 0;
  	}
  	return snd_pcm_lib_free_pages(substream);
  }

  static void snd_intel8x0_setup_pcm_out(struct intel8x0 *chip,
  				       struct snd_pcm_runtime *runtime)

  {
  	unsigned int cnt;
  	int dbl = runtime->rate > 48000;

  
  	spin_lock_irq(&chip->reg_lock);

  	switch (chip->device_type) {
  	case DEVICE_ALI:
  		cnt = igetdword(chip, ICHREG(ALI_SCR));
  		cnt &= ~ICH_ALI_SC_PCM_246_MASK;
  		if (runtime->channels == 4 || dbl)
  			cnt |= ICH_ALI_SC_PCM_4;
  		else if (runtime->channels == 6)
  			cnt |= ICH_ALI_SC_PCM_6;
  		iputdword(chip, ICHREG(ALI_SCR), cnt);
  		break;
  	case DEVICE_SIS:
  		cnt = igetdword(chip, ICHREG(GLOB_CNT));
  		cnt &= ~ICH_SIS_PCM_246_MASK;
  		if (runtime->channels == 4 || dbl)
  			cnt |= ICH_SIS_PCM_4;
  		else if (runtime->channels == 6)
  			cnt |= ICH_SIS_PCM_6;
  		iputdword(chip, ICHREG(GLOB_CNT), cnt);
  		break;
  	default:
  		cnt = igetdword(chip, ICHREG(GLOB_CNT));
  		cnt &= ~(ICH_PCM_246_MASK | ICH_PCM_20BIT);
  		if (runtime->channels == 4 || dbl)
  			cnt |= ICH_PCM_4;
  		else if (runtime->channels == 6)
  			cnt |= ICH_PCM_6;

  		else if (runtime->channels == 8)
  			cnt |= ICH_PCM_8;

  		if (chip->device_type == DEVICE_NFORCE) {
  			/* reset to 2ch once to keep the 6 channel data in alignment,
  			 * to start from Front Left always
  			 */
  			if (cnt & ICH_PCM_246_MASK) {
  				iputdword(chip, ICHREG(GLOB_CNT), cnt & ~ICH_PCM_246_MASK);
  				spin_unlock_irq(&chip->reg_lock);
  				msleep(50); /* grrr... */
  				spin_lock_irq(&chip->reg_lock);
  			}
  		} else if (chip->device_type == DEVICE_INTEL_ICH4) {
  			if (runtime->sample_bits > 16)
  				cnt |= ICH_PCM_20BIT;
  		}
  		iputdword(chip, ICHREG(GLOB_CNT), cnt);
  		break;
  	}

  	spin_unlock_irq(&chip->reg_lock);

  }

  static int snd_intel8x0_pcm_prepare(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;
  	struct ichdev *ichdev = get_ichdev(substream);

  
  	ichdev->physbuf = runtime->dma_addr;
  	ichdev->size = snd_pcm_lib_buffer_bytes(substream);
  	ichdev->fragsize = snd_pcm_lib_period_bytes(substream);

  	if (ichdev->ichd == ICHD_PCMOUT) {
  		snd_intel8x0_setup_pcm_out(chip, runtime);

  		if (chip->device_type == DEVICE_INTEL_ICH4)

  			ichdev->pos_shift = (runtime->sample_bits > 16) ? 2 : 1;

  	}
  	snd_intel8x0_setup_periods(chip, ichdev);

  	return 0;
  }

  static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct ichdev *ichdev = get_ichdev(substream);

  	size_t ptr1, ptr;

  	int civ, timeout = 10;

  	unsigned int position;
  
  	spin_lock(&chip->reg_lock);
  	do {
  		civ = igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV);
  		ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb);
  		position = ichdev->position;
  		if (ptr1 == 0) {
  			udelay(10);
  			continue;
  		}
  		if (civ == igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV) &&
  		    ptr1 == igetword(chip, ichdev->reg_offset + ichdev->roff_picb))
  			break;
  	} while (timeout--);

  	ptr = ichdev->last_pos;

  	if (ptr1 != 0) {
  		ptr1 <<= ichdev->pos_shift;
  		ptr = ichdev->fragsize1 - ptr1;
  		ptr += position;

  		if (ptr < ichdev->last_pos) {
  			unsigned int pos_base, last_base;
  			pos_base = position / ichdev->fragsize1;
  			last_base = ichdev->last_pos / ichdev->fragsize1;
  			/* another sanity check; ptr1 can go back to full
  			 * before the base position is updated
  			 */
  			if (pos_base == last_base)
  				ptr = ichdev->last_pos;
  		}

  	}

  	ichdev->last_pos = ptr;

  	spin_unlock(&chip->reg_lock);
  	if (ptr >= ichdev->size)
  		return 0;
  	return bytes_to_frames(substream->runtime, ptr);
  }

  static struct snd_pcm_hardware snd_intel8x0_stream =

  {
  	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
  				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
  				 SNDRV_PCM_INFO_MMAP_VALID |
  				 SNDRV_PCM_INFO_PAUSE |
  				 SNDRV_PCM_INFO_RESUME),
  	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
  	.rates =		SNDRV_PCM_RATE_48000,
  	.rate_min =		48000,
  	.rate_max =		48000,
  	.channels_min =		2,
  	.channels_max =		2,
  	.buffer_bytes_max =	128 * 1024,
  	.period_bytes_min =	32,
  	.period_bytes_max =	128 * 1024,
  	.periods_min =		1,
  	.periods_max =		1024,
  	.fifo_size =		0,
  };
  
  static unsigned int channels4[] = {
  	2, 4,
  };

  static struct snd_pcm_hw_constraint_list hw_constraints_channels4 = {

  	.count = ARRAY_SIZE(channels4),
  	.list = channels4,
  	.mask = 0,
  };
  
  static unsigned int channels6[] = {
  	2, 4, 6,
  };

  static struct snd_pcm_hw_constraint_list hw_constraints_channels6 = {

  	.count = ARRAY_SIZE(channels6),
  	.list = channels6,
  	.mask = 0,
  };

  static unsigned int channels8[] = {
  	2, 4, 6, 8,
  };
  
  static struct snd_pcm_hw_constraint_list hw_constraints_channels8 = {
  	.count = ARRAY_SIZE(channels8),
  	.list = channels8,
  	.mask = 0,
  };

  static int snd_intel8x0_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	int err;
  
  	ichdev->substream = substream;
  	runtime->hw = snd_intel8x0_stream;
  	runtime->hw.rates = ichdev->pcm->rates;
  	snd_pcm_limit_hw_rates(runtime);
  	if (chip->device_type == DEVICE_SIS) {
  		runtime->hw.buffer_bytes_max = 64*1024;
  		runtime->hw.period_bytes_max = 64*1024;
  	}
  	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
  		return err;
  	runtime->private_data = ichdev;
  	return 0;
  }

  static int snd_intel8x0_playback_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	int err;
  
  	err = snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCMOUT]);
  	if (err < 0)
  		return err;

  	if (chip->multi8) {
  		runtime->hw.channels_max = 8;
  		snd_pcm_hw_constraint_list(runtime, 0,
  						SNDRV_PCM_HW_PARAM_CHANNELS,
  						&hw_constraints_channels8);
  	} else if (chip->multi6) {

  		runtime->hw.channels_max = 6;

  		snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
  					   &hw_constraints_channels6);

  	} else if (chip->multi4) {
  		runtime->hw.channels_max = 4;

  		snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
  					   &hw_constraints_channels4);

  	}
  	if (chip->dra) {
  		snd_ac97_pcm_double_rate_rules(runtime);
  	}
  	if (chip->smp20bit) {
  		runtime->hw.formats |= SNDRV_PCM_FMTBIT_S32_LE;
  		snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
  	}
  	return 0;
  }

  static int snd_intel8x0_playback_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ICHD_PCMOUT].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_capture_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCMIN]);
  }

  static int snd_intel8x0_capture_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ICHD_PCMIN].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_mic_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_MIC]);
  }

  static int snd_intel8x0_mic_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ICHD_MIC].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_mic2_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_MIC2]);
  }

  static int snd_intel8x0_mic2_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ICHD_MIC2].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_capture2_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ICHD_PCM2IN]);
  }

  static int snd_intel8x0_capture2_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ICHD_PCM2IN].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_spdif_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  	int idx = chip->device_type == DEVICE_NFORCE ? NVD_SPBAR : ICHD_SPBAR;
  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[idx]);
  }

  static int snd_intel8x0_spdif_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  	int idx = chip->device_type == DEVICE_NFORCE ? NVD_SPBAR : ICHD_SPBAR;
  
  	chip->ichd[idx].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_ali_ac97spdifout_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  	unsigned int val;
  
  	spin_lock_irq(&chip->reg_lock);
  	val = igetdword(chip, ICHREG(ALI_INTERFACECR));
  	val |= ICH_ALI_IF_AC97SP;
  	iputdword(chip, ICHREG(ALI_INTERFACECR), val);
  	/* also needs to set ALI_SC_CODEC_SPDF correctly */
  	spin_unlock_irq(&chip->reg_lock);
  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ALID_AC97SPDIFOUT]);
  }

  static int snd_intel8x0_ali_ac97spdifout_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  	unsigned int val;
  
  	chip->ichd[ALID_AC97SPDIFOUT].substream = NULL;
  	spin_lock_irq(&chip->reg_lock);
  	val = igetdword(chip, ICHREG(ALI_INTERFACECR));
  	val &= ~ICH_ALI_IF_AC97SP;
  	iputdword(chip, ICHREG(ALI_INTERFACECR), val);
  	spin_unlock_irq(&chip->reg_lock);
  
  	return 0;
  }

  #if 0 // NYI

  static int snd_intel8x0_ali_spdifin_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ALID_SPDIFIN]);
  }

  static int snd_intel8x0_ali_spdifin_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ALID_SPDIFIN].substream = NULL;
  	return 0;
  }

  static int snd_intel8x0_ali_spdifout_open(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	return snd_intel8x0_pcm_open(substream, &chip->ichd[ALID_SPDIFOUT]);
  }

  static int snd_intel8x0_ali_spdifout_close(struct snd_pcm_substream *substream)

  {

  	struct intel8x0 *chip = snd_pcm_substream_chip(substream);

  
  	chip->ichd[ALID_SPDIFOUT].substream = NULL;
  	return 0;
  }
  #endif

  static struct snd_pcm_ops snd_intel8x0_playback_ops = {

  	.open =		snd_intel8x0_playback_open,
  	.close =	snd_intel8x0_playback_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_capture_ops = {

  	.open =		snd_intel8x0_capture_open,
  	.close =	snd_intel8x0_capture_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_capture_mic_ops = {

  	.open =		snd_intel8x0_mic_open,
  	.close =	snd_intel8x0_mic_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_capture_mic2_ops = {

  	.open =		snd_intel8x0_mic2_open,
  	.close =	snd_intel8x0_mic2_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_capture2_ops = {

  	.open =		snd_intel8x0_capture2_open,
  	.close =	snd_intel8x0_capture2_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_spdif_ops = {

  	.open =		snd_intel8x0_spdif_open,
  	.close =	snd_intel8x0_spdif_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_ali_playback_ops = {

  	.open =		snd_intel8x0_playback_open,
  	.close =	snd_intel8x0_playback_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_ali_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_ali_capture_ops = {

  	.open =		snd_intel8x0_capture_open,
  	.close =	snd_intel8x0_capture_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_ali_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_ali_capture_mic_ops = {

  	.open =		snd_intel8x0_mic_open,
  	.close =	snd_intel8x0_mic_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_ali_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_ali_ac97spdifout_ops = {

  	.open =		snd_intel8x0_ali_ac97spdifout_open,
  	.close =	snd_intel8x0_ali_ac97spdifout_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_ali_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  #if 0 // NYI

  static struct snd_pcm_ops snd_intel8x0_ali_spdifin_ops = {

  	.open =		snd_intel8x0_ali_spdifin_open,
  	.close =	snd_intel8x0_ali_spdifin_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };

  static struct snd_pcm_ops snd_intel8x0_ali_spdifout_ops = {

  	.open =		snd_intel8x0_ali_spdifout_open,
  	.close =	snd_intel8x0_ali_spdifout_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_intel8x0_hw_params,
  	.hw_free =	snd_intel8x0_hw_free,
  	.prepare =	snd_intel8x0_pcm_prepare,
  	.trigger =	snd_intel8x0_pcm_trigger,
  	.pointer =	snd_intel8x0_pcm_pointer,
  };
  #endif // NYI
  
  struct ich_pcm_table {
  	char *suffix;

  	struct snd_pcm_ops *playback_ops;
  	struct snd_pcm_ops *capture_ops;

  	size_t prealloc_size;
  	size_t prealloc_max_size;
  	int ac97_idx;
  };

  static int __devinit snd_intel8x0_pcm1(struct intel8x0 *chip, int device,
  				       struct ich_pcm_table *rec)

  {

  	struct snd_pcm *pcm;

  	int err;
  	char name[32];
  
  	if (rec->suffix)
  		sprintf(name, "Intel ICH - %s", rec->suffix);
  	else
  		strcpy(name, "Intel ICH");
  	err = snd_pcm_new(chip->card, name, device,
  			  rec->playback_ops ? 1 : 0,
  			  rec->capture_ops ? 1 : 0, &pcm);
  	if (err < 0)
  		return err;
  
  	if (rec->playback_ops)
  		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
  	if (rec->capture_ops)
  		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
  
  	pcm->private_data = chip;
  	pcm->info_flags = 0;
  	if (rec->suffix)
  		sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
  	else
  		strcpy(pcm->name, chip->card->shortname);
  	chip->pcm[device] = pcm;

  	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
  					      snd_dma_pci_data(chip->pci),

  					      rec->prealloc_size, rec->prealloc_max_size);
  
  	return 0;
  }
  
  static struct ich_pcm_table intel_pcms[] __devinitdata = {
  	{
  		.playback_ops = &snd_intel8x0_playback_ops,
  		.capture_ops = &snd_intel8x0_capture_ops,
  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  	},
  	{
  		.suffix = "MIC ADC",
  		.capture_ops = &snd_intel8x0_capture_mic_ops,
  		.prealloc_size = 0,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = ICHD_MIC,
  	},
  	{
  		.suffix = "MIC2 ADC",
  		.capture_ops = &snd_intel8x0_capture_mic2_ops,
  		.prealloc_size = 0,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = ICHD_MIC2,
  	},
  	{
  		.suffix = "ADC2",
  		.capture_ops = &snd_intel8x0_capture2_ops,
  		.prealloc_size = 0,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = ICHD_PCM2IN,
  	},
  	{
  		.suffix = "IEC958",
  		.playback_ops = &snd_intel8x0_spdif_ops,
  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = ICHD_SPBAR,
  	},
  };
  
  static struct ich_pcm_table nforce_pcms[] __devinitdata = {
  	{
  		.playback_ops = &snd_intel8x0_playback_ops,
  		.capture_ops = &snd_intel8x0_capture_ops,
  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  	},
  	{
  		.suffix = "MIC ADC",
  		.capture_ops = &snd_intel8x0_capture_mic_ops,
  		.prealloc_size = 0,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = NVD_MIC,
  	},
  	{
  		.suffix = "IEC958",
  		.playback_ops = &snd_intel8x0_spdif_ops,
  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = NVD_SPBAR,
  	},
  };
  
  static struct ich_pcm_table ali_pcms[] __devinitdata = {
  	{
  		.playback_ops = &snd_intel8x0_ali_playback_ops,
  		.capture_ops = &snd_intel8x0_ali_capture_ops,
  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  	},
  	{
  		.suffix = "MIC ADC",
  		.capture_ops = &snd_intel8x0_ali_capture_mic_ops,
  		.prealloc_size = 0,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = ALID_MIC,
  	},
  	{
  		.suffix = "IEC958",
  		.playback_ops = &snd_intel8x0_ali_ac97spdifout_ops,

  		/* .capture_ops = &snd_intel8x0_ali_spdifin_ops, */

  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  		.ac97_idx = ALID_AC97SPDIFOUT,
  	},
  #if 0 // NYI
  	{
  		.suffix = "HW IEC958",
  		.playback_ops = &snd_intel8x0_ali_spdifout_ops,
  		.prealloc_size = 64 * 1024,
  		.prealloc_max_size = 128 * 1024,
  	},
  #endif
  };

  static int __devinit snd_intel8x0_pcm(struct intel8x0 *chip)

  {
  	int i, tblsize, device, err;
  	struct ich_pcm_table *tbl, *rec;
  
  	switch (chip->device_type) {
  	case DEVICE_INTEL_ICH4:
  		tbl = intel_pcms;
  		tblsize = ARRAY_SIZE(intel_pcms);

  		if (spdif_aclink)
  			tblsize--;

  		break;
  	case DEVICE_NFORCE:
  		tbl = nforce_pcms;
  		tblsize = ARRAY_SIZE(nforce_pcms);

  		if (spdif_aclink)
  			tblsize--;

  		break;
  	case DEVICE_ALI:
  		tbl = ali_pcms;
  		tblsize = ARRAY_SIZE(ali_pcms);
  		break;
  	default:
  		tbl = intel_pcms;
  		tblsize = 2;
  		break;
  	}
  
  	device = 0;
  	for (i = 0; i < tblsize; i++) {
  		rec = tbl + i;
  		if (i > 0 && rec->ac97_idx) {
  			/* activate PCM only when associated AC'97 codec */
  			if (! chip->ichd[rec->ac97_idx].pcm)
  				continue;
  		}
  		err = snd_intel8x0_pcm1(chip, device, rec);
  		if (err < 0)
  			return err;
  		device++;
  	}
  
  	chip->pcm_devs = device;
  	return 0;
  }
  	
  
  /*
   *  Mixer part
   */

  static void snd_intel8x0_mixer_free_ac97_bus(struct snd_ac97_bus *bus)

  {

  	struct intel8x0 *chip = bus->private_data;

  	chip->ac97_bus = NULL;
  }

  static void snd_intel8x0_mixer_free_ac97(struct snd_ac97 *ac97)

  {

  	struct intel8x0 *chip = ac97->private_data;

  	chip->ac97[ac97->num] = NULL;
  }
  
  static struct ac97_pcm ac97_pcm_defs[] __devinitdata = {
  	/* front PCM */
  	{
  		.exclusive = 1,
  		.r = {	{
  				.slots = (1 << AC97_SLOT_PCM_LEFT) |
  					 (1 << AC97_SLOT_PCM_RIGHT) |
  					 (1 << AC97_SLOT_PCM_CENTER) |
  					 (1 << AC97_SLOT_PCM_SLEFT) |
  					 (1 << AC97_SLOT_PCM_SRIGHT) |
  					 (1 << AC97_SLOT_LFE)
  			},
  			{
  				.slots = (1 << AC97_SLOT_PCM_LEFT) |
  					 (1 << AC97_SLOT_PCM_RIGHT) |
  					 (1 << AC97_SLOT_PCM_LEFT_0) |
  					 (1 << AC97_SLOT_PCM_RIGHT_0)
  			}
  		}
  	},
  	/* PCM IN #1 */
  	{
  		.stream = 1,
  		.exclusive = 1,
  		.r = {	{
  				.slots = (1 << AC97_SLOT_PCM_LEFT) |
  					 (1 << AC97_SLOT_PCM_RIGHT)
  			}
  		}
  	},
  	/* MIC IN #1 */
  	{
  		.stream = 1,
  		.exclusive = 1,
  		.r = {	{
  				.slots = (1 << AC97_SLOT_MIC)
  			}
  		}
  	},
  	/* S/PDIF PCM */
  	{
  		.exclusive = 1,
  		.spdif = 1,
  		.r = {	{
  				.slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
  					 (1 << AC97_SLOT_SPDIF_RIGHT2)
  			}
  		}
  	},
  	/* PCM IN #2 */
  	{
  		.stream = 1,
  		.exclusive = 1,
  		.r = {	{
  				.slots = (1 << AC97_SLOT_PCM_LEFT) |
  					 (1 << AC97_SLOT_PCM_RIGHT)
  			}
  		}
  	},
  	/* MIC IN #2 */
  	{
  		.stream = 1,
  		.exclusive = 1,
  		.r = {	{
  				.slots = (1 << AC97_SLOT_MIC)
  			}
  		}
  	},
  };
  
  static struct ac97_quirk ac97_quirks[] __devinitdata = {

          {
  		.subvendor = 0x0e11,
  		.subdevice = 0x000e,
  		.name = "Compaq Deskpro EN",	/* AD1885 */
  		.type = AC97_TUNE_HP_ONLY
          },

  	{

  		.subvendor = 0x0e11,
  		.subdevice = 0x008a,

  		.name = "Compaq Evo W4000",	/* AD1885 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x0e11,
  		.subdevice = 0x00b8,

  		.name = "Compaq Evo D510C",
  		.type = AC97_TUNE_HP_ONLY
  	},
          {

  		.subvendor = 0x0e11,
  		.subdevice = 0x0860,

  		.name = "HP/Compaq nx7010",
  		.type = AC97_TUNE_MUTE_LED
          },
  	{

  		.subvendor = 0x1014,

  		.subdevice = 0x0534,
  		.name = "ThinkPad X31",
  		.type = AC97_TUNE_INV_EAPD
  	},
  	{
  		.subvendor = 0x1014,

  		.subdevice = 0x1f00,

  		.name = "MS-9128",
  		.type = AC97_TUNE_ALC_JACK
  	},
  	{

  		.subvendor = 0x1014,
  		.subdevice = 0x0267,
  		.name = "IBM NetVista A30p",	/* AD1981B */
  		.type = AC97_TUNE_HP_ONLY

  	},
  	{
  		.subvendor = 0x1025,
  		.subdevice = 0x0082,
  		.name = "Acer Travelmate 2310",
  		.type = AC97_TUNE_HP_ONLY

  	},
  	{

  		.subvendor = 0x1025,
  		.subdevice = 0x0083,
  		.name = "Acer Aspire 3003LCi",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,
  		.subdevice = 0x00d8,

  		.name = "Dell Precision 530",	/* AD1885 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,
  		.subdevice = 0x010d,

  		.name = "Dell",	/* which model?  AD1885 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,
  		.subdevice = 0x0126,

  		.name = "Dell Optiplex GX260",	/* AD1981A */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,
  		.subdevice = 0x012c,

  		.name = "Dell Precision 650",	/* AD1981A */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,
  		.subdevice = 0x012d,

  		.name = "Dell Precision 450",	/* AD1981B*/
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,
  		.subdevice = 0x0147,

  		.name = "Dell",	/* which model?  AD1981B*/
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,

  		.subdevice = 0x0151,
  		.name = "Dell Optiplex GX270",  /* AD1981B */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{
  		.subvendor = 0x1028,

  		.subdevice = 0x014e,
  		.name = "Dell D800", /* STAC9750/51 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{
  		.subvendor = 0x1028,

  		.subdevice = 0x0163,

  		.name = "Dell Unknown",	/* STAC9750/51 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1028,

  		.subdevice = 0x016a,
  		.name = "Dell Inspiron 8600",	/* STAC9750/51 */
  		.type = AC97_TUNE_HP_ONLY

  	},
  	{
  		.subvendor = 0x1028,
  		.subdevice = 0x0182,
  		.name = "Dell Latitude D610",	/* STAC9750/51 */
  		.type = AC97_TUNE_HP_ONLY

  	},
  	{
  		.subvendor = 0x1028,

  		.subdevice = 0x0186,
  		.name = "Dell Latitude D810", /* cf. Malone #41015 */
  		.type = AC97_TUNE_HP_MUTE_LED
  	},
  	{
  		.subvendor = 0x1028,
  		.subdevice = 0x0188,
  		.name = "Dell Inspiron 6000",
  		.type = AC97_TUNE_HP_MUTE_LED /* cf. Malone #41015 */
  	},
  	{
  		.subvendor = 0x1028,

  		.subdevice = 0x0189,
  		.name = "Dell Inspiron 9300",
  		.type = AC97_TUNE_HP_MUTE_LED
  	},
  	{
  		.subvendor = 0x1028,

  		.subdevice = 0x0191,
  		.name = "Dell Inspiron 8600",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x103c,
  		.subdevice = 0x006d,

  		.name = "HP zv5000",
  		.type = AC97_TUNE_MUTE_LED	/*AD1981B*/
  	},
  	{	/* FIXME: which codec? */

  		.subvendor = 0x103c,
  		.subdevice = 0x00c3,

  		.name = "HP xw6000",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x103c,
  		.subdevice = 0x088c,

  		.name = "HP nc8000",

  		.type = AC97_TUNE_HP_MUTE_LED

  	},
  	{

  		.subvendor = 0x103c,
  		.subdevice = 0x0890,

  		.name = "HP nc6000",
  		.type = AC97_TUNE_MUTE_LED
  	},
  	{

  		.subvendor = 0x103c,
  		.subdevice = 0x129d,

  		.name = "HP xw8000",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x103c,

  		.subdevice = 0x0938,
  		.name = "HP nc4200",
  		.type = AC97_TUNE_HP_MUTE_LED
  	},
  	{
  		.subvendor = 0x103c,
  		.subdevice = 0x099c,

  		.name = "HP nx6110/nc6120",

  		.type = AC97_TUNE_HP_MUTE_LED
  	},
  	{
  		.subvendor = 0x103c,
  		.subdevice = 0x0944,
  		.name = "HP nc6220",
  		.type = AC97_TUNE_HP_MUTE_LED
  	},
  	{
  		.subvendor = 0x103c,
  		.subdevice = 0x0934,
  		.name = "HP nc8220",
  		.type = AC97_TUNE_HP_MUTE_LED
  	},
  	{
  		.subvendor = 0x103c,

  		.subdevice = 0x12f1,

  		.name = "HP xw8200",	/* AD1981B*/
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x103c,
  		.subdevice = 0x12f2,

  		.name = "HP xw6200",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x103c,
  		.subdevice = 0x3008,

  		.name = "HP xw4200",	/* AD1981B*/
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x104d,

  		.subdevice = 0x8144,
  		.name = "Sony",
  		.type = AC97_TUNE_INV_EAPD
  	},
  	{
  		.subvendor = 0x104d,

  		.subdevice = 0x8197,

  		.name = "Sony S1XP",
  		.type = AC97_TUNE_INV_EAPD
  	},

  	{
  		.subvendor = 0x104d,
  		.subdevice = 0x81c0,
  		.name = "Sony VAIO VGN-T350P", /*AD1981B*/
  		.type = AC97_TUNE_INV_EAPD
  	},

  	{
  		.subvendor = 0x104d,
  		.subdevice = 0x81c5,
  		.name = "Sony VAIO VGN-B1VP", /*AD1981B*/
  		.type = AC97_TUNE_INV_EAPD
  	},

   	{

  		.subvendor = 0x1043,
  		.subdevice = 0x80f3,

  		.name = "ASUS ICH5/AD1985",
  		.type = AC97_TUNE_AD_SHARING
  	},
  	{

  		.subvendor = 0x10cf,
  		.subdevice = 0x11c3,

  		.name = "Fujitsu-Siemens E4010",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x10cf,

  		.subdevice = 0x1225,
  		.name = "Fujitsu-Siemens T3010",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{
  		.subvendor = 0x10cf,

  		.subdevice = 0x1253,

  		.name = "Fujitsu S6210",	/* STAC9750/51 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x10cf,

  		.subdevice = 0x127d,
  		.name = "Fujitsu Lifebook P7010",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{
  		.subvendor = 0x10cf,

  		.subdevice = 0x127e,
  		.name = "Fujitsu Lifebook C1211D",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{
  		.subvendor = 0x10cf,

  		.subdevice = 0x12ec,
  		.name = "Fujitsu-Siemens 4010",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x10cf,
  		.subdevice = 0x12f2,
  		.name = "Fujitsu-Siemens Celsius H320",
  		.type = AC97_TUNE_SWAP_HP
  	},
  	{

  		.subvendor = 0x10f1,
  		.subdevice = 0x2665,

  		.name = "Fujitsu-Siemens Celsius",	/* AD1981? */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x10f1,
  		.subdevice = 0x2885,

  		.name = "AMD64 Mobo",	/* ALC650 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x10f1,
  		.subdevice = 0x2895,
  		.name = "Tyan Thunder K8WE",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x10f7,
  		.subdevice = 0x834c,
  		.name = "Panasonic CF-R4",
  		.type = AC97_TUNE_HP_ONLY,
  	},
  	{

  		.subvendor = 0x110a,
  		.subdevice = 0x0056,

  		.name = "Fujitsu-Siemens Scenic",	/* AD1981? */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x11d4,
  		.subdevice = 0x5375,

  		.name = "ADI AD1985 (discrete)",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x1462,
  		.subdevice = 0x5470,

  		.name = "MSI P4 ATX 645 Ultra",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x161f,
  		.subdevice = 0x203a,
  		.name = "Gateway 4525GZ",		/* AD1981B */
  		.type = AC97_TUNE_INV_EAPD
  	},
  	{

  		.subvendor = 0x1734,
  		.subdevice = 0x0088,

  		.name = "Fujitsu-Siemens D1522",	/* AD1981 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0x2000,

  		.mask = 0xfff0,
  		.name = "Intel ICH5/AD1985",
  		.type = AC97_TUNE_AD_SHARING
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0x4000,

  		.mask = 0xfff0,
  		.name = "Intel ICH5/AD1985",
  		.type = AC97_TUNE_AD_SHARING
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0x4856,

  		.name = "Intel D845WN (82801BA)",
  		.type = AC97_TUNE_SWAP_HP
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0x4d44,

  		.name = "Intel D850EMV2",	/* AD1885 */
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0x4d56,

  		.name = "Intel ICH/AD1885",
  		.type = AC97_TUNE_HP_ONLY
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0x6000,

  		.mask = 0xfff0,
  		.name = "Intel ICH5/AD1985",
  		.type = AC97_TUNE_AD_SHARING
  	},
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0xe000,

  		.mask = 0xfff0,
  		.name = "Intel ICH5/AD1985",
  		.type = AC97_TUNE_AD_SHARING
  	},
  #if 0 /* FIXME: this seems wrong on most boards */
  	{

  		.subvendor = 0x8086,
  		.subdevice = 0xa000,

  		.mask = 0xfff0,
  		.name = "Intel ICH5/AD1985",
  		.type = AC97_TUNE_HP_ONLY
  	},
  #endif
  	{ } /* terminator */
  };

  static int __devinit snd_intel8x0_mixer(struct intel8x0 *chip, int ac97_clock,
  					const char *quirk_override)

  {

  	struct snd_ac97_bus *pbus;
  	struct snd_ac97_template ac97;

  	int err;
  	unsigned int i, codecs;
  	unsigned int glob_sta = 0;

  	struct snd_ac97_bus_ops *ops;
  	static struct snd_ac97_bus_ops standard_bus_ops = {

  		.write = snd_intel8x0_codec_write,
  		.read = snd_intel8x0_codec_read,
  	};

  	static struct snd_ac97_bus_ops ali_bus_ops = {

  		.write = snd_intel8x0_ali_codec_write,
  		.read = snd_intel8x0_ali_codec_read,
  	};
  
  	chip->spdif_idx = -1; /* use PCMOUT (or disabled) */

  	if (!spdif_aclink) {
  		switch (chip->device_type) {
  		case DEVICE_NFORCE:
  			chip->spdif_idx = NVD_SPBAR;
  			break;
  		case DEVICE_ALI:
  			chip->spdif_idx = ALID_AC97SPDIFOUT;
  			break;
  		case DEVICE_INTEL_ICH4:
  			chip->spdif_idx = ICHD_SPBAR;
  			break;
  		};
  	}

  
  	chip->in_ac97_init = 1;
  	
  	memset(&ac97, 0, sizeof(ac97));
  	ac97.private_data = chip;
  	ac97.private_free = snd_intel8x0_mixer_free_ac97;

  	ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;

  	if (chip->xbox)
  		ac97.scaps |= AC97_SCAP_DETECT_BY_VENDOR;
  	if (chip->device_type != DEVICE_ALI) {
  		glob_sta = igetdword(chip, ICHREG(GLOB_STA));
  		ops = &standard_bus_ops;

  		chip->in_sdin_init = 1;
  		codecs = 0;
  		for (i = 0; i < chip->max_codecs; i++) {
  			if (! (glob_sta & chip->codec_bit[i]))
  				continue;
  			if (chip->device_type == DEVICE_INTEL_ICH4) {
  				snd_intel8x0_codec_read_test(chip, codecs);
  				chip->ac97_sdin[codecs] =
  					igetbyte(chip, ICHREG(SDM)) & ICH_LDI_MASK;

  				if (snd_BUG_ON(chip->ac97_sdin[codecs] >= 3))
  					chip->ac97_sdin[codecs] = 0;

  			} else
  				chip->ac97_sdin[codecs] = i;
  			codecs++;

  		}

  		chip->in_sdin_init = 0;
  		if (! codecs)
  			codecs = 1;

  	} else {
  		ops = &ali_bus_ops;
  		codecs = 1;
  		/* detect the secondary codec */
  		for (i = 0; i < 100; i++) {
  			unsigned int reg = igetdword(chip, ICHREG(ALI_RTSR));
  			if (reg & 0x40) {
  				codecs = 2;
  				break;
  			}
  			iputdword(chip, ICHREG(ALI_RTSR), reg | 0x40);
  			udelay(1);
  		}
  	}
  	if ((err = snd_ac97_bus(chip->card, 0, ops, chip, &pbus)) < 0)
  		goto __err;
  	pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;

  	if (ac97_clock >= 8000 && ac97_clock <= 48000)
  		pbus->clock = ac97_clock;
  	/* FIXME: my test board doesn't work well with VRA... */
  	if (chip->device_type == DEVICE_ALI)
  		pbus->no_vra = 1;
  	else
  		pbus->dra = 1;
  	chip->ac97_bus = pbus;

  	chip->ncodecs = codecs;

  
  	ac97.pci = chip->pci;
  	for (i = 0; i < codecs; i++) {
  		ac97.num = i;
  		if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
  			if (err != -EACCES)
  				snd_printk(KERN_ERR "Unable to initialize codec #%d
  ", i);
  			if (i == 0)
  				goto __err;

  		}
  	}
  	/* tune up the primary codec */
  	snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
  	/* enable separate SDINs for ICH4 */
  	if (chip->device_type == DEVICE_INTEL_ICH4)
  		pbus->isdin = 1;
  	/* find the available PCM streams */
  	i = ARRAY_SIZE(ac97_pcm_defs);
  	if (chip->device_type != DEVICE_INTEL_ICH4)
  		i -= 2;		/* do not allocate PCM2IN and MIC2 */
  	if (chip->spdif_idx < 0)
  		i--;		/* do not allocate S/PDIF */
  	err = snd_ac97_pcm_assign(pbus, i, ac97_pcm_defs);
  	if (err < 0)
  		goto __err;
  	chip->ichd[ICHD_PCMOUT].pcm = &pbus->pcms[0];
  	chip->ichd[ICHD_PCMIN].pcm = &pbus->pcms[1];
  	chip->ichd[ICHD_MIC].pcm = &pbus->pcms[2];
  	if (chip->spdif_idx >= 0)
  		chip->ichd[chip->spdif_idx].pcm = &pbus->pcms[3];
  	if (chip->device_type == DEVICE_INTEL_ICH4) {
  		chip->ichd[ICHD_PCM2IN].pcm = &pbus->pcms[4];
  		chip->ichd[ICHD_MIC2].pcm = &pbus->pcms[5];
  	}
  	/* enable separate SDINs for ICH4 */
  	if (chip->device_type == DEVICE_INTEL_ICH4) {
  		struct ac97_pcm *pcm = chip->ichd[ICHD_PCM2IN].pcm;
  		u8 tmp = igetbyte(chip, ICHREG(SDM));
  		tmp &= ~(ICH_DI2L_MASK|ICH_DI1L_MASK);
  		if (pcm) {
  			tmp |= ICH_SE;	/* steer enable for multiple SDINs */
  			tmp |= chip->ac97_sdin[0] << ICH_DI1L_SHIFT;
  			for (i = 1; i < 4; i++) {
  				if (pcm->r[0].codec[i]) {
  					tmp |= chip->ac97_sdin[pcm->r[0].codec[1]->num] << ICH_DI2L_SHIFT;
  					break;
  				}
  			}
  		} else {
  			tmp &= ~ICH_SE; /* steer disable */
  		}
  		iputbyte(chip, ICHREG(SDM), tmp);
  	}
  	if (pbus->pcms[0].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
  		chip->multi4 = 1;

  		if (pbus->pcms[0].r[0].slots & (1 << AC97_SLOT_LFE)) {

  			chip->multi6 = 1;

  			if (chip->ac97[0]->flags & AC97_HAS_8CH)
  				chip->multi8 = 1;
  		}

  	}
  	if (pbus->pcms[0].r[1].rslots[0]) {
  		chip->dra = 1;
  	}
  	if (chip->device_type == DEVICE_INTEL_ICH4) {
  		if ((igetdword(chip, ICHREG(GLOB_STA)) & ICH_SAMPLE_CAP) == ICH_SAMPLE_16_20)
  			chip->smp20bit = 1;
  	}

  	if (chip->device_type == DEVICE_NFORCE && !spdif_aclink) {

  		/* 48kHz only */
  		chip->ichd[chip->spdif_idx].pcm->rates = SNDRV_PCM_RATE_48000;
  	}

  	if (chip->device_type == DEVICE_INTEL_ICH4 && !spdif_aclink) {

  		/* use slot 10/11 for SPDIF */
  		u32 val;
  		val = igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_PCM_SPDIF_MASK;
  		val |= ICH_PCM_SPDIF_1011;
  		iputdword(chip, ICHREG(GLOB_CNT), val);
  		snd_ac97_update_bits(chip->ac97[0], AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
  	}
  	chip->in_ac97_init = 0;
  	return 0;
  
   __err:
  	/* clear the cold-reset bit for the next chance */
  	if (chip->device_type != DEVICE_ALI)

  		iputdword(chip, ICHREG(GLOB_CNT),
  			  igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);

  	return err;
  }
  
  
  /*
   *
   */

  static void do_ali_reset(struct intel8x0 *chip)

  {
  	iputdword(chip, ICHREG(ALI_SCR), ICH_ALI_SC_RESET);
  	iputdword(chip, ICHREG(ALI_FIFOCR1), 0x83838383);
  	iputdword(chip, ICHREG(ALI_FIFOCR2), 0x83838383);
  	iputdword(chip, ICHREG(ALI_FIFOCR3), 0x83838383);
  	iputdword(chip, ICHREG(ALI_INTERFACECR),

  		  ICH_ALI_IF_PI|ICH_ALI_IF_PO);

  	iputdword(chip, ICHREG(ALI_INTERRUPTCR), 0x00000000);
  	iputdword(chip, ICHREG(ALI_INTERRUPTSR), 0x00000000);
  }

  #ifdef CONFIG_SND_AC97_POWER_SAVE
  static struct snd_pci_quirk ich_chip_reset_mode[] = {
  	SND_PCI_QUIRK(0x1014, 0x051f, "Thinkpad R32", 1),
  	{ } /* end */
  };

  static int snd_intel8x0_ich_chip_cold_reset(struct intel8x0 *chip)
  {
  	unsigned int cnt;

  	/* ACLink on, 2 channels */

  
  	if (snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode))
  		return -EIO;

  	cnt = igetdword(chip, ICHREG(GLOB_CNT));
  	cnt &= ~(ICH_ACLINK | ICH_PCM_246_MASK);

  	/* do cold reset - the full ac97 powerdown may leave the controller
  	 * in a warm state but actually it cannot communicate with the codec.
  	 */
  	iputdword(chip, ICHREG(GLOB_CNT), cnt & ~ICH_AC97COLD);
  	cnt = igetdword(chip, ICHREG(GLOB_CNT));
  	udelay(10);
  	iputdword(chip, ICHREG(GLOB_CNT), cnt | ICH_AC97COLD);
  	msleep(1);

  	return 0;
  }
  #define snd_intel8x0_ich_chip_can_cold_reset(chip) \
  	(!snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode))

  #else

  #define snd_intel8x0_ich_chip_cold_reset(chip)	0

  #define snd_intel8x0_ich_chip_can_cold_reset(chip) (0)
  #endif
  
  static int snd_intel8x0_ich_chip_reset(struct intel8x0 *chip)
  {
  	unsigned long end_time;
  	unsigned int cnt;
  	/* ACLink on, 2 channels */
  	cnt = igetdword(chip, ICHREG(GLOB_CNT));
  	cnt &= ~(ICH_ACLINK | ICH_PCM_246_MASK);

  	/* finish cold or do warm reset */
  	cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
  	iputdword(chip, ICHREG(GLOB_CNT), cnt);
  	end_time = (jiffies + (HZ / 4)) + 1;
  	do {
  		if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)

  			return 0;

  		schedule_timeout_uninterruptible(1);

  	} while (time_after_eq(end_time, jiffies));

  	snd_printk(KERN_ERR "AC'97 warm reset still in progress? [0x%x]
  ",
  		   igetdword(chip, ICHREG(GLOB_CNT)));

  	return -EIO;

  }
  
  static int snd_intel8x0_ich_chip_init(struct intel8x0 *chip, int probing)
  {
  	unsigned long end_time;
  	unsigned int status, nstatus;
  	unsigned int cnt;
  	int err;
  
  	/* put logic to right state */
  	/* first clear status bits */
  	status = ICH_RCS | ICH_MCINT | ICH_POINT | ICH_PIINT;
  	if (chip->device_type == DEVICE_NFORCE)
  		status |= ICH_NVSPINT;
  	cnt = igetdword(chip, ICHREG(GLOB_STA));
  	iputdword(chip, ICHREG(GLOB_STA), cnt & status);
  
  	if (snd_intel8x0_ich_chip_can_cold_reset(chip))
  		err = snd_intel8x0_ich_chip_cold_reset(chip);
  	else
  		err = snd_intel8x0_ich_chip_reset(chip);
  	if (err < 0)
  		return err;

  	if (probing) {
  		/* wait for any codec ready status.
  		 * Once it becomes ready it should remain ready
  		 * as long as we do not disable the ac97 link.
  		 */
  		end_time = jiffies + HZ;
  		do {

  			status = igetdword(chip, ICHREG(GLOB_STA)) &

  				chip->codec_isr_bits;

  			if (status)
  				break;

  			schedule_timeout_uninterruptible(1);

  		} while (time_after_eq(end_time, jiffies));
  		if (! status) {
  			/* no codec is found */

  			snd_printk(KERN_ERR "codec_ready: codec is not ready [0x%x]
  ",
  				   igetdword(chip, ICHREG(GLOB_STA)));

  			return -EIO;
  		}

  		/* wait for other codecs ready status. */
  		end_time = jiffies + HZ / 4;

  		while (status != chip->codec_isr_bits &&
  		       time_after_eq(end_time, jiffies)) {

  			schedule_timeout_uninterruptible(1);

  			status |= igetdword(chip, ICHREG(GLOB_STA)) &
  				chip->codec_isr_bits;

  		}
  
  	} else {
  		/* resume phase */
  		int i;
  		status = 0;

  		for (i = 0; i < chip->ncodecs; i++)

  			if (chip->ac97[i])

  				status |= chip->codec_bit[chip->ac97_sdin[i]];

  		/* wait until all the probed codecs are ready */
  		end_time = jiffies + HZ;
  		do {

  			nstatus = igetdword(chip, ICHREG(GLOB_STA)) &

  				chip->codec_isr_bits;

  			if (status == nstatus)
  				break;

  			schedule_timeout_uninterruptible(1);

  		} while (time_after_eq(end_time, jiffies));
  	}
  
  	if (chip->device_type == DEVICE_SIS) {
  		/* unmute the output on SIS7012 */
  		iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
  	}

  	if (chip->device_type == DEVICE_NFORCE && !spdif_aclink) {

  		/* enable SPDIF interrupt */
  		unsigned int val;
  		pci_read_config_dword(chip->pci, 0x4c, &val);
  		val |= 0x1000000;
  		pci_write_config_dword(chip->pci, 0x4c, val);
  	}
        	return 0;
  }

  static int snd_intel8x0_ali_chip_init(struct intel8x0 *chip, int probing)

  {
  	u32 reg;
  	int i = 0;
  
  	reg = igetdword(chip, ICHREG(ALI_SCR));
  	if ((reg & 2) == 0)	/* Cold required */
  		reg |= 2;
  	else
  		reg |= 1;	/* Warm */
  	reg &= ~0x80000000;	/* ACLink on */
  	iputdword(chip, ICHREG(ALI_SCR), reg);
  
  	for (i = 0; i < HZ / 2; i++) {
  		if (! (igetdword(chip, ICHREG(ALI_INTERRUPTSR)) & ALI_INT_GPIO))
  			goto __ok;

  		schedule_timeout_uninterruptible(1);

  	}
  	snd_printk(KERN_ERR "AC'97 reset failed.
  ");
  	if (probing)
  		return -EIO;
  
   __ok:
  	for (i = 0; i < HZ / 2; i++) {
  		reg = igetdword(chip, ICHREG(ALI_RTSR));
  		if (reg & 0x80) /* primary codec */
  			break;
  		iputdword(chip, ICHREG(ALI_RTSR), reg | 0x80);

  		schedule_timeout_uninterruptible(1);

  	}
  
  	do_ali_reset(chip);
  	return 0;
  }

  static int snd_intel8x0_chip_init(struct intel8x0 *chip, int probing)

  {

  	unsigned int i, timeout;

  	int err;
  	
  	if (chip->device_type != DEVICE_ALI) {
  		if ((err = snd_intel8x0_ich_chip_init(chip, probing)) < 0)
  			return err;
  		iagetword(chip, 0);	/* clear semaphore flag */
  	} else {
  		if ((err = snd_intel8x0_ali_chip_init(chip, probing)) < 0)
  			return err;
  	}
  
  	/* disable interrupts */
  	for (i = 0; i < chip->bdbars_count; i++)
  		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
  	/* reset channels */
  	for (i = 0; i < chip->bdbars_count; i++)
  		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);

  	for (i = 0; i < chip->bdbars_count; i++) {
  	        timeout = 100000;
  	        while (--timeout != 0) {
          		if ((igetbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset) & ICH_RESETREGS) == 0)
          		        break;
                  }
                  if (timeout == 0)
                          printk(KERN_ERR "intel8x0: reset of registers failed?
  ");
          }

  	/* initialize Buffer Descriptor Lists */
  	for (i = 0; i < chip->bdbars_count; i++)

  		iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset,
  			  chip->ichd[i].bdbar_addr);

  	return 0;
  }

  static int snd_intel8x0_free(struct intel8x0 *chip)

  {
  	unsigned int i;
  
  	if (chip->irq < 0)
  		goto __hw_end;
  	/* disable interrupts */
  	for (i = 0; i < chip->bdbars_count; i++)
  		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
  	/* reset channels */
  	for (i = 0; i < chip->bdbars_count; i++)
  		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);

  	if (chip->device_type == DEVICE_NFORCE && !spdif_aclink) {

  		/* stop the spdif interrupt */
  		unsigned int val;
  		pci_read_config_dword(chip->pci, 0x4c, &val);
  		val &= ~0x1000000;
  		pci_write_config_dword(chip->pci, 0x4c, val);
  	}
  	/* --- */

        __hw_end:
  	if (chip->irq >= 0)

  		free_irq(chip->irq, chip);

  	if (chip->bdbars.area) {
  		if (chip->fix_nocache)
  			fill_nocache(chip->bdbars.area, chip->bdbars.bytes, 0);
  		snd_dma_free_pages(&chip->bdbars);
  	}

  	if (chip->addr)
  		pci_iounmap(chip->pci, chip->addr);
  	if (chip->bmaddr)
  		pci_iounmap(chip->pci, chip->bmaddr);

  	pci_release_regions(chip->pci);
  	pci_disable_device(chip->pci);
  	kfree(chip);
  	return 0;
  }
  
  #ifdef CONFIG_PM
  /*
   * power management
   */

  static int intel8x0_suspend(struct pci_dev *pci, pm_message_t state)

  {

  	struct snd_card *card = pci_get_drvdata(pci);
  	struct intel8x0 *chip = card->private_data;

  	int i;

  	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);

  	for (i = 0; i < chip->pcm_devs; i++)
  		snd_pcm_suspend_all(chip->pcm[i]);
  	/* clear nocache */
  	if (chip->fix_nocache) {
  		for (i = 0; i < chip->bdbars_count; i++) {

  			struct ichdev *ichdev = &chip->ichd[i];

  			if (ichdev->substream && ichdev->page_attr_changed) {

  				struct snd_pcm_runtime *runtime = ichdev->substream->runtime;

  				if (runtime->dma_area)
  					fill_nocache(runtime->dma_area, runtime->dma_bytes, 0);
  			}
  		}
  	}

  	for (i = 0; i < chip->ncodecs; i++)

  		snd_ac97_suspend(chip->ac97[i]);

  	if (chip->device_type == DEVICE_INTEL_ICH4)
  		chip->sdm_saved = igetbyte(chip, ICHREG(SDM));

  	if (chip->irq >= 0) {

  		free_irq(chip->irq, chip);

  		chip->irq = -1;
  	}

  	pci_disable_device(pci);
  	pci_save_state(pci);

  	/* The call below may disable built-in speaker on some laptops
  	 * after S2RAM.  So, don't touch it.
  	 */
  	/* pci_set_power_state(pci, pci_choose_state(pci, state)); */

  	return 0;
  }

  static int intel8x0_resume(struct pci_dev *pci)

  {

  	struct snd_card *card = pci_get_drvdata(pci);
  	struct intel8x0 *chip = card->private_data;

  	int i;

  	pci_set_power_state(pci, PCI_D0);

  	pci_restore_state(pci);

  	if (pci_enable_device(pci) < 0) {
  		printk(KERN_ERR "intel8x0: pci_enable_device failed, "
  		       "disabling device
  ");
  		snd_card_disconnect(card);
  		return -EIO;
  	}

  	pci_set_master(pci);

  	snd_intel8x0_chip_init(chip, 0);

  	if (request_irq(pci->irq, snd_intel8x0_interrupt,

  			IRQF_SHARED, KBUILD_MODNAME, chip)) {

  		printk(KERN_ERR "intel8x0: unable to grab IRQ %d, "
  		       "disabling device
  ", pci->irq);
  		snd_card_disconnect(card);
  		return -EIO;
  	}

  	chip->irq = pci->irq;

  	synchronize_irq(chip->irq);

  	/* re-initialize mixer stuff */

  	if (chip->device_type == DEVICE_INTEL_ICH4 && !spdif_aclink) {

  		/* enable separate SDINs for ICH4 */
  		iputbyte(chip, ICHREG(SDM), chip->sdm_saved);
  		/* use slot 10/11 for SPDIF */
  		iputdword(chip, ICHREG(GLOB_CNT),
  			  (igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_PCM_SPDIF_MASK) |
  			  ICH_PCM_SPDIF_1011);
  	}

  	/* refill nocache */
  	if (chip->fix_nocache)
  		fill_nocache(chip->bdbars.area, chip->bdbars.bytes, 1);

  	for (i = 0; i < chip->ncodecs; i++)

  		snd_ac97_resume(chip->ac97[i]);

  
  	/* refill nocache */
  	if (chip->fix_nocache) {
  		for (i = 0; i < chip->bdbars_count; i++) {

  			struct ichdev *ichdev = &chip->ichd[i];