/*
   *   ALSA driver for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST audio
   *   interfaces 
   *
   *	Copyright (c) 2000, 2001 Anders Torger <torger@ludd.luth.se>
   *    
   *      Thanks to Henk Hesselink <henk@anda.nl> for the analog volume control
   *      code.
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   */      

  #include <linux/delay.h>
  #include <linux/init.h>
  #include <linux/interrupt.h>
  #include <linux/pci.h>

  #include <linux/module.h>

  
  #include <sound/core.h>
  #include <sound/info.h>
  #include <sound/control.h>
  #include <sound/pcm.h>
  #include <sound/pcm_params.h>
  #include <sound/asoundef.h>
  #include <sound/initval.h>
  
  #include <asm/io.h>
  
  /* note, two last pcis should be equal, it is not a bug */
  
  MODULE_AUTHOR("Anders Torger <torger@ludd.luth.se>");
  MODULE_DESCRIPTION("RME Digi96, Digi96/8, Digi96/8 PRO, Digi96/8 PST, "
  		   "Digi96/8 PAD");
  MODULE_LICENSE("GPL");
  MODULE_SUPPORTED_DEVICE("{{RME,Digi96},"
  		"{RME,Digi96/8},"
  		"{RME,Digi96/8 PRO},"
  		"{RME,Digi96/8 PST},"
  		"{RME,Digi96/8 PAD}}");
  
  static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
  static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */

  static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */

  
  module_param_array(index, int, NULL, 0444);
  MODULE_PARM_DESC(index, "Index value for RME Digi96 soundcard.");
  module_param_array(id, charp, NULL, 0444);
  MODULE_PARM_DESC(id, "ID string for RME Digi96 soundcard.");
  module_param_array(enable, bool, NULL, 0444);
  MODULE_PARM_DESC(enable, "Enable RME Digi96 soundcard.");
  
  /*
   * Defines for RME Digi96 series, from internal RME reference documents
   * dated 12.01.00
   */
  
  #define RME96_SPDIF_NCHANNELS 2
  
  /* Playback and capture buffer size */
  #define RME96_BUFFER_SIZE 0x10000
  
  /* IO area size */
  #define RME96_IO_SIZE 0x60000
  
  /* IO area offsets */
  #define RME96_IO_PLAY_BUFFER      0x0
  #define RME96_IO_REC_BUFFER       0x10000
  #define RME96_IO_CONTROL_REGISTER 0x20000
  #define RME96_IO_ADDITIONAL_REG   0x20004
  #define RME96_IO_CONFIRM_PLAY_IRQ 0x20008
  #define RME96_IO_CONFIRM_REC_IRQ  0x2000C
  #define RME96_IO_SET_PLAY_POS     0x40000
  #define RME96_IO_RESET_PLAY_POS   0x4FFFC
  #define RME96_IO_SET_REC_POS      0x50000
  #define RME96_IO_RESET_REC_POS    0x5FFFC
  #define RME96_IO_GET_PLAY_POS     0x20000
  #define RME96_IO_GET_REC_POS      0x30000
  
  /* Write control register bits */
  #define RME96_WCR_START     (1 << 0)
  #define RME96_WCR_START_2   (1 << 1)
  #define RME96_WCR_GAIN_0    (1 << 2)
  #define RME96_WCR_GAIN_1    (1 << 3)
  #define RME96_WCR_MODE24    (1 << 4)
  #define RME96_WCR_MODE24_2  (1 << 5)
  #define RME96_WCR_BM        (1 << 6)
  #define RME96_WCR_BM_2      (1 << 7)
  #define RME96_WCR_ADAT      (1 << 8)
  #define RME96_WCR_FREQ_0    (1 << 9)
  #define RME96_WCR_FREQ_1    (1 << 10)
  #define RME96_WCR_DS        (1 << 11)
  #define RME96_WCR_PRO       (1 << 12)
  #define RME96_WCR_EMP       (1 << 13)
  #define RME96_WCR_SEL       (1 << 14)
  #define RME96_WCR_MASTER    (1 << 15)
  #define RME96_WCR_PD        (1 << 16)
  #define RME96_WCR_INP_0     (1 << 17)
  #define RME96_WCR_INP_1     (1 << 18)
  #define RME96_WCR_THRU_0    (1 << 19)
  #define RME96_WCR_THRU_1    (1 << 20)
  #define RME96_WCR_THRU_2    (1 << 21)
  #define RME96_WCR_THRU_3    (1 << 22)
  #define RME96_WCR_THRU_4    (1 << 23)
  #define RME96_WCR_THRU_5    (1 << 24)
  #define RME96_WCR_THRU_6    (1 << 25)
  #define RME96_WCR_THRU_7    (1 << 26)
  #define RME96_WCR_DOLBY     (1 << 27)
  #define RME96_WCR_MONITOR_0 (1 << 28)
  #define RME96_WCR_MONITOR_1 (1 << 29)
  #define RME96_WCR_ISEL      (1 << 30)
  #define RME96_WCR_IDIS      (1 << 31)
  
  #define RME96_WCR_BITPOS_GAIN_0 2
  #define RME96_WCR_BITPOS_GAIN_1 3
  #define RME96_WCR_BITPOS_FREQ_0 9
  #define RME96_WCR_BITPOS_FREQ_1 10
  #define RME96_WCR_BITPOS_INP_0 17
  #define RME96_WCR_BITPOS_INP_1 18
  #define RME96_WCR_BITPOS_MONITOR_0 28
  #define RME96_WCR_BITPOS_MONITOR_1 29
  
  /* Read control register bits */
  #define RME96_RCR_AUDIO_ADDR_MASK 0xFFFF
  #define RME96_RCR_IRQ_2     (1 << 16)
  #define RME96_RCR_T_OUT     (1 << 17)
  #define RME96_RCR_DEV_ID_0  (1 << 21)
  #define RME96_RCR_DEV_ID_1  (1 << 22)
  #define RME96_RCR_LOCK      (1 << 23)
  #define RME96_RCR_VERF      (1 << 26)
  #define RME96_RCR_F0        (1 << 27)
  #define RME96_RCR_F1        (1 << 28)
  #define RME96_RCR_F2        (1 << 29)
  #define RME96_RCR_AUTOSYNC  (1 << 30)
  #define RME96_RCR_IRQ       (1 << 31)
  
  #define RME96_RCR_BITPOS_F0 27
  #define RME96_RCR_BITPOS_F1 28
  #define RME96_RCR_BITPOS_F2 29

  /* Additional register bits */

  #define RME96_AR_WSEL       (1 << 0)
  #define RME96_AR_ANALOG     (1 << 1)
  #define RME96_AR_FREQPAD_0  (1 << 2)
  #define RME96_AR_FREQPAD_1  (1 << 3)
  #define RME96_AR_FREQPAD_2  (1 << 4)
  #define RME96_AR_PD2        (1 << 5)
  #define RME96_AR_DAC_EN     (1 << 6)
  #define RME96_AR_CLATCH     (1 << 7)
  #define RME96_AR_CCLK       (1 << 8)
  #define RME96_AR_CDATA      (1 << 9)
  
  #define RME96_AR_BITPOS_F0 2
  #define RME96_AR_BITPOS_F1 3
  #define RME96_AR_BITPOS_F2 4
  
  /* Monitor tracks */
  #define RME96_MONITOR_TRACKS_1_2 0
  #define RME96_MONITOR_TRACKS_3_4 1
  #define RME96_MONITOR_TRACKS_5_6 2
  #define RME96_MONITOR_TRACKS_7_8 3
  
  /* Attenuation */
  #define RME96_ATTENUATION_0 0
  #define RME96_ATTENUATION_6 1
  #define RME96_ATTENUATION_12 2
  #define RME96_ATTENUATION_18 3
  
  /* Input types */
  #define RME96_INPUT_OPTICAL 0
  #define RME96_INPUT_COAXIAL 1
  #define RME96_INPUT_INTERNAL 2
  #define RME96_INPUT_XLR 3
  #define RME96_INPUT_ANALOG 4
  
  /* Clock modes */
  #define RME96_CLOCKMODE_SLAVE 0
  #define RME96_CLOCKMODE_MASTER 1
  #define RME96_CLOCKMODE_WORDCLOCK 2
  
  /* Block sizes in bytes */
  #define RME96_SMALL_BLOCK_SIZE 2048
  #define RME96_LARGE_BLOCK_SIZE 8192
  
  /* Volume control */
  #define RME96_AD1852_VOL_BITS 14
  #define RME96_AD1855_VOL_BITS 10

  struct rme96 {

  	spinlock_t    lock;
  	int irq;
  	unsigned long port;
  	void __iomem *iobase;
  	
  	u32 wcreg;    /* cached write control register value */
  	u32 wcreg_spdif;		/* S/PDIF setup */
  	u32 wcreg_spdif_stream;		/* S/PDIF setup (temporary) */
  	u32 rcreg;    /* cached read control register value */
  	u32 areg;     /* cached additional register value */
  	u16 vol[2]; /* cached volume of analog output */
  
  	u8 rev; /* card revision number */

  	struct snd_pcm_substream *playback_substream;
  	struct snd_pcm_substream *capture_substream;

  
  	int playback_frlog; /* log2 of framesize */
  	int capture_frlog;
  	
          size_t playback_periodsize; /* in bytes, zero if not used */
  	size_t capture_periodsize; /* in bytes, zero if not used */

  	struct snd_card *card;
  	struct snd_pcm *spdif_pcm;
  	struct snd_pcm *adat_pcm; 

  	struct pci_dev     *pci;

  	struct snd_kcontrol   *spdif_ctl;
  };

  static DEFINE_PCI_DEVICE_TABLE(snd_rme96_ids) = {

  	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96), 0, },
  	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8), 0, },
  	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PRO), 0, },
  	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST), 0, },

  	{ 0, }
  };
  
  MODULE_DEVICE_TABLE(pci, snd_rme96_ids);
  
  #define RME96_ISPLAYING(rme96) ((rme96)->wcreg & RME96_WCR_START)
  #define RME96_ISRECORDING(rme96) ((rme96)->wcreg & RME96_WCR_START_2)

  #define	RME96_HAS_ANALOG_IN(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
  #define	RME96_HAS_ANALOG_OUT(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO || \
  				     (rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)

  #define	RME96_DAC_IS_1852(rme96) (RME96_HAS_ANALOG_OUT(rme96) && (rme96)->rev >= 4)

  #define	RME96_DAC_IS_1855(rme96) (((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && (rme96)->rev < 4) || \
  			          ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO && (rme96)->rev == 2))

  #define	RME96_185X_MAX_OUT(rme96) ((1 << (RME96_DAC_IS_1852(rme96) ? RME96_AD1852_VOL_BITS : RME96_AD1855_VOL_BITS)) - 1)
  
  static int

  snd_rme96_playback_prepare(struct snd_pcm_substream *substream);

  
  static int

  snd_rme96_capture_prepare(struct snd_pcm_substream *substream);

  
  static int

  snd_rme96_playback_trigger(struct snd_pcm_substream *substream, 

  			   int cmd);
  
  static int

  snd_rme96_capture_trigger(struct snd_pcm_substream *substream, 

  			  int cmd);
  
  static snd_pcm_uframes_t

  snd_rme96_playback_pointer(struct snd_pcm_substream *substream);

  
  static snd_pcm_uframes_t

  snd_rme96_capture_pointer(struct snd_pcm_substream *substream);

  
  static void __devinit 

  snd_rme96_proc_init(struct rme96 *rme96);

  
  static int

  snd_rme96_create_switches(struct snd_card *card,
  			  struct rme96 *rme96);

  
  static int

  snd_rme96_getinputtype(struct rme96 *rme96);

  
  static inline unsigned int

  snd_rme96_playback_ptr(struct rme96 *rme96)

  {
  	return (readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
  		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->playback_frlog;
  }
  
  static inline unsigned int

  snd_rme96_capture_ptr(struct rme96 *rme96)

  {
  	return (readl(rme96->iobase + RME96_IO_GET_REC_POS)
  		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->capture_frlog;
  }
  
  static int

  snd_rme96_playback_silence(struct snd_pcm_substream *substream,

  			   int channel, /* not used (interleaved data) */
  			   snd_pcm_uframes_t pos,
  			   snd_pcm_uframes_t count)
  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	count <<= rme96->playback_frlog;
  	pos <<= rme96->playback_frlog;
  	memset_io(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
  		  0, count);
  	return 0;
  }
  
  static int

  snd_rme96_playback_copy(struct snd_pcm_substream *substream,

  			int channel, /* not used (interleaved data) */
  			snd_pcm_uframes_t pos,
  			void __user *src,
  			snd_pcm_uframes_t count)
  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	count <<= rme96->playback_frlog;
  	pos <<= rme96->playback_frlog;
  	copy_from_user_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos, src,
  			    count);
  	return 0;
  }
  
  static int

  snd_rme96_capture_copy(struct snd_pcm_substream *substream,

  		       int channel, /* not used (interleaved data) */
  		       snd_pcm_uframes_t pos,
  		       void __user *dst,
  		       snd_pcm_uframes_t count)
  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	count <<= rme96->capture_frlog;
  	pos <<= rme96->capture_frlog;
  	copy_to_user_fromio(dst, rme96->iobase + RME96_IO_REC_BUFFER + pos,
  			    count);
          return 0;
  }
  
  /*

   * Digital output capabilities (S/PDIF)

   */

  static struct snd_pcm_hardware snd_rme96_playback_spdif_info =

  {
  	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
  			      SNDRV_PCM_INFO_MMAP_VALID |
  			      SNDRV_PCM_INFO_INTERLEAVED |
  			      SNDRV_PCM_INFO_PAUSE),
  	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
  			      SNDRV_PCM_FMTBIT_S32_LE),
  	.rates =	     (SNDRV_PCM_RATE_32000 |
  			      SNDRV_PCM_RATE_44100 | 
  			      SNDRV_PCM_RATE_48000 | 
  			      SNDRV_PCM_RATE_64000 |
  			      SNDRV_PCM_RATE_88200 | 
  			      SNDRV_PCM_RATE_96000),
  	.rate_min =	     32000,
  	.rate_max =	     96000,
  	.channels_min =	     2,
  	.channels_max =	     2,
  	.buffer_bytes_max =  RME96_BUFFER_SIZE,
  	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
  	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
  	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
  	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
  	.fifo_size =	     0,
  };
  
  /*

   * Digital input capabilities (S/PDIF)

   */

  static struct snd_pcm_hardware snd_rme96_capture_spdif_info =

  {
  	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
  			      SNDRV_PCM_INFO_MMAP_VALID |
  			      SNDRV_PCM_INFO_INTERLEAVED |
  			      SNDRV_PCM_INFO_PAUSE),
  	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
  			      SNDRV_PCM_FMTBIT_S32_LE),
  	.rates =	     (SNDRV_PCM_RATE_32000 |
  			      SNDRV_PCM_RATE_44100 | 
  			      SNDRV_PCM_RATE_48000 | 
  			      SNDRV_PCM_RATE_64000 |
  			      SNDRV_PCM_RATE_88200 | 
  			      SNDRV_PCM_RATE_96000),
  	.rate_min =	     32000,
  	.rate_max =	     96000,
  	.channels_min =	     2,
  	.channels_max =	     2,
  	.buffer_bytes_max =  RME96_BUFFER_SIZE,
  	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
  	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
  	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
  	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
  	.fifo_size =	     0,
  };
  
  /*

   * Digital output capabilities (ADAT)

   */

  static struct snd_pcm_hardware snd_rme96_playback_adat_info =

  {
  	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
  			      SNDRV_PCM_INFO_MMAP_VALID |
  			      SNDRV_PCM_INFO_INTERLEAVED |
  			      SNDRV_PCM_INFO_PAUSE),
  	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
  			      SNDRV_PCM_FMTBIT_S32_LE),
  	.rates =             (SNDRV_PCM_RATE_44100 | 
  			      SNDRV_PCM_RATE_48000),
  	.rate_min =          44100,
  	.rate_max =          48000,
  	.channels_min =      8,
  	.channels_max =	     8,
  	.buffer_bytes_max =  RME96_BUFFER_SIZE,
  	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
  	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
  	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
  	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
  	.fifo_size =	     0,
  };
  
  /*

   * Digital input capabilities (ADAT)

   */

  static struct snd_pcm_hardware snd_rme96_capture_adat_info =

  {
  	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
  			      SNDRV_PCM_INFO_MMAP_VALID |
  			      SNDRV_PCM_INFO_INTERLEAVED |
  			      SNDRV_PCM_INFO_PAUSE),
  	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
  			      SNDRV_PCM_FMTBIT_S32_LE),
  	.rates =	     (SNDRV_PCM_RATE_44100 | 
  			      SNDRV_PCM_RATE_48000),
  	.rate_min =          44100,
  	.rate_max =          48000,
  	.channels_min =      8,
  	.channels_max =	     8,
  	.buffer_bytes_max =  RME96_BUFFER_SIZE,
  	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
  	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
  	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
  	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
  	.fifo_size =         0,
  };
  
  /*
   * The CDATA, CCLK and CLATCH bits can be used to write to the SPI interface
   * of the AD1852 or AD1852 D/A converter on the board.  CDATA must be set up
   * on the falling edge of CCLK and be stable on the rising edge.  The rising
   * edge of CLATCH after the last data bit clocks in the whole data word.
   * A fast processor could probably drive the SPI interface faster than the
   * DAC can handle (3MHz for the 1855, unknown for the 1852).  The udelay(1)
   * limits the data rate to 500KHz and only causes a delay of 33 microsecs.
   *
   * NOTE: increased delay from 1 to 10, since there where problems setting
   * the volume.
   */
  static void

  snd_rme96_write_SPI(struct rme96 *rme96, u16 val)

  {
  	int i;
  
  	for (i = 0; i < 16; i++) {
  		if (val & 0x8000) {
  			rme96->areg |= RME96_AR_CDATA;
  		} else {
  			rme96->areg &= ~RME96_AR_CDATA;
  		}
  		rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CLATCH);
  		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  		udelay(10);
  		rme96->areg |= RME96_AR_CCLK;
  		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  		udelay(10);
  		val <<= 1;
  	}
  	rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CDATA);
  	rme96->areg |= RME96_AR_CLATCH;
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  	udelay(10);
  	rme96->areg &= ~RME96_AR_CLATCH;
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  }
  
  static void

  snd_rme96_apply_dac_volume(struct rme96 *rme96)

  {
  	if (RME96_DAC_IS_1852(rme96)) {
  		snd_rme96_write_SPI(rme96, (rme96->vol[0] << 2) | 0x0);
  		snd_rme96_write_SPI(rme96, (rme96->vol[1] << 2) | 0x2);
  	} else if (RME96_DAC_IS_1855(rme96)) {
  		snd_rme96_write_SPI(rme96, (rme96->vol[0] & 0x3FF) | 0x000);
  		snd_rme96_write_SPI(rme96, (rme96->vol[1] & 0x3FF) | 0x400);
  	}
  }
  
  static void

  snd_rme96_reset_dac(struct rme96 *rme96)

  {
  	writel(rme96->wcreg | RME96_WCR_PD,
  	       rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  }
  
  static int

  snd_rme96_getmontracks(struct rme96 *rme96)

  {
  	return ((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_0) & 1) +
  		(((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_1) & 1) << 1);
  }
  
  static int

  snd_rme96_setmontracks(struct rme96 *rme96,

  		       int montracks)
  {
  	if (montracks & 1) {
  		rme96->wcreg |= RME96_WCR_MONITOR_0;
  	} else {
  		rme96->wcreg &= ~RME96_WCR_MONITOR_0;
  	}
  	if (montracks & 2) {
  		rme96->wcreg |= RME96_WCR_MONITOR_1;
  	} else {
  		rme96->wcreg &= ~RME96_WCR_MONITOR_1;
  	}
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	return 0;
  }
  
  static int

  snd_rme96_getattenuation(struct rme96 *rme96)

  {
  	return ((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_0) & 1) +
  		(((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_1) & 1) << 1);
  }
  
  static int

  snd_rme96_setattenuation(struct rme96 *rme96,

  			 int attenuation)
  {
  	switch (attenuation) {
  	case 0:
  		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) &
  			~RME96_WCR_GAIN_1;
  		break;
  	case 1:
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) &
  			~RME96_WCR_GAIN_1;
  		break;
  	case 2:
  		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) |
  			RME96_WCR_GAIN_1;
  		break;
  	case 3:
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) |
  			RME96_WCR_GAIN_1;
  		break;
  	default:
  		return -EINVAL;
  	}
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	return 0;
  }
  
  static int

  snd_rme96_capture_getrate(struct rme96 *rme96,

  			  int *is_adat)
  {	
  	int n, rate;
  
  	*is_adat = 0;
  	if (rme96->areg & RME96_AR_ANALOG) {
  		/* Analog input, overrides S/PDIF setting */
  		n = ((rme96->areg >> RME96_AR_BITPOS_F0) & 1) +
  			(((rme96->areg >> RME96_AR_BITPOS_F1) & 1) << 1);
  		switch (n) {
  		case 1:
  			rate = 32000;
  			break;
  		case 2:
  			rate = 44100;
  			break;
  		case 3:
  			rate = 48000;
  			break;
  		default:
  			return -1;
  		}
  		return (rme96->areg & RME96_AR_BITPOS_F2) ? rate << 1 : rate;
  	}
  
  	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	if (rme96->rcreg & RME96_RCR_LOCK) {
  		/* ADAT rate */
  		*is_adat = 1;
  		if (rme96->rcreg & RME96_RCR_T_OUT) {
  			return 48000;
  		}
  		return 44100;
  	}
  
  	if (rme96->rcreg & RME96_RCR_VERF) {
  		return -1;
  	}
  	
  	/* S/PDIF rate */
  	n = ((rme96->rcreg >> RME96_RCR_BITPOS_F0) & 1) +
  		(((rme96->rcreg >> RME96_RCR_BITPOS_F1) & 1) << 1) +
  		(((rme96->rcreg >> RME96_RCR_BITPOS_F2) & 1) << 2);
  	
  	switch (n) {
  	case 0:		
  		if (rme96->rcreg & RME96_RCR_T_OUT) {
  			return 64000;
  		}
  		return -1;
  	case 3: return 96000;
  	case 4: return 88200;
  	case 5: return 48000;
  	case 6: return 44100;
  	case 7: return 32000;
  	default:
  		break;
  	}
  	return -1;
  }
  
  static int

  snd_rme96_playback_getrate(struct rme96 *rme96)

  {
  	int rate, dummy;
  
  	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
              snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
  	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
  	{
  	        /* slave clock */
  	        return rate;
  	}
  	rate = ((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_0) & 1) +
  		(((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_1) & 1) << 1);
  	switch (rate) {
  	case 1:
  		rate = 32000;
  		break;
  	case 2:
  		rate = 44100;
  		break;
  	case 3:
  		rate = 48000;
  		break;
  	default:
  		return -1;
  	}
  	return (rme96->wcreg & RME96_WCR_DS) ? rate << 1 : rate;
  }
  
  static int

  snd_rme96_playback_setrate(struct rme96 *rme96,

  			   int rate)
  {
  	int ds;
  
  	ds = rme96->wcreg & RME96_WCR_DS;
  	switch (rate) {
  	case 32000:
  		rme96->wcreg &= ~RME96_WCR_DS;
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
  			~RME96_WCR_FREQ_1;
  		break;
  	case 44100:
  		rme96->wcreg &= ~RME96_WCR_DS;
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
  			~RME96_WCR_FREQ_0;
  		break;
  	case 48000:
  		rme96->wcreg &= ~RME96_WCR_DS;
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
  			RME96_WCR_FREQ_1;
  		break;
  	case 64000:
  		rme96->wcreg |= RME96_WCR_DS;
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
  			~RME96_WCR_FREQ_1;
  		break;
  	case 88200:
  		rme96->wcreg |= RME96_WCR_DS;
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
  			~RME96_WCR_FREQ_0;
  		break;
  	case 96000:
  		rme96->wcreg |= RME96_WCR_DS;
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
  			RME96_WCR_FREQ_1;
  		break;
  	default:
  		return -EINVAL;
  	}
  	if ((!ds && rme96->wcreg & RME96_WCR_DS) ||
  	    (ds && !(rme96->wcreg & RME96_WCR_DS)))
  	{
  		/* change to/from double-speed: reset the DAC (if available) */
  		snd_rme96_reset_dac(rme96);
  	} else {
  		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	}
  	return 0;
  }
  
  static int

  snd_rme96_capture_analog_setrate(struct rme96 *rme96,

  				 int rate)
  {
  	switch (rate) {
  	case 32000:
  		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
  			       ~RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
  		break;
  	case 44100:
  		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
  			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
  		break;
  	case 48000:
  		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
  			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
  		break;
  	case 64000:
  		if (rme96->rev < 4) {
  			return -EINVAL;
  		}
  		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
  			       ~RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
  		break;
  	case 88200:
  		if (rme96->rev < 4) {
  			return -EINVAL;
  		}
  		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
  			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
  		break;
  	case 96000:
  		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
  			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
  		break;
  	default:
  		return -EINVAL;
  	}
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  	return 0;
  }
  
  static int

  snd_rme96_setclockmode(struct rme96 *rme96,

  		       int mode)
  {
  	switch (mode) {
  	case RME96_CLOCKMODE_SLAVE:
  	        /* AutoSync */ 
  		rme96->wcreg &= ~RME96_WCR_MASTER;
  		rme96->areg &= ~RME96_AR_WSEL;
  		break;
  	case RME96_CLOCKMODE_MASTER:
  	        /* Internal */
  		rme96->wcreg |= RME96_WCR_MASTER;
  		rme96->areg &= ~RME96_AR_WSEL;
  		break;
  	case RME96_CLOCKMODE_WORDCLOCK:
  		/* Word clock is a master mode */
  		rme96->wcreg |= RME96_WCR_MASTER; 
  		rme96->areg |= RME96_AR_WSEL;
  		break;
  	default:
  		return -EINVAL;
  	}
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  	return 0;
  }
  
  static int

  snd_rme96_getclockmode(struct rme96 *rme96)

  {
  	if (rme96->areg & RME96_AR_WSEL) {
  		return RME96_CLOCKMODE_WORDCLOCK;
  	}
  	return (rme96->wcreg & RME96_WCR_MASTER) ? RME96_CLOCKMODE_MASTER :
  		RME96_CLOCKMODE_SLAVE;
  }
  
  static int

  snd_rme96_setinputtype(struct rme96 *rme96,

  		       int type)
  {
  	int n;
  
  	switch (type) {
  	case RME96_INPUT_OPTICAL:
  		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) &
  			~RME96_WCR_INP_1;
  		break;
  	case RME96_INPUT_COAXIAL:
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) &
  			~RME96_WCR_INP_1;
  		break;
  	case RME96_INPUT_INTERNAL:
  		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) |
  			RME96_WCR_INP_1;
  		break;
  	case RME96_INPUT_XLR:

  		if ((rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
  		     rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PRO) ||
  		    (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&

  		     rme96->rev > 4))
  		{
  			/* Only Digi96/8 PRO and Digi96/8 PAD supports XLR */
  			return -EINVAL;
  		}
  		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) |
  			RME96_WCR_INP_1;
  		break;
  	case RME96_INPUT_ANALOG:
  		if (!RME96_HAS_ANALOG_IN(rme96)) {
  			return -EINVAL;
  		}
  		rme96->areg |= RME96_AR_ANALOG;
  		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  		if (rme96->rev < 4) {
  			/*
  			 * Revision less than 004 does not support 64 and
  			 * 88.2 kHz
  			 */
  			if (snd_rme96_capture_getrate(rme96, &n) == 88200) {
  				snd_rme96_capture_analog_setrate(rme96, 44100);
  			}
  			if (snd_rme96_capture_getrate(rme96, &n) == 64000) {
  				snd_rme96_capture_analog_setrate(rme96, 32000);
  			}
  		}
  		return 0;
  	default:
  		return -EINVAL;
  	}
  	if (type != RME96_INPUT_ANALOG && RME96_HAS_ANALOG_IN(rme96)) {
  		rme96->areg &= ~RME96_AR_ANALOG;
  		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  	}
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	return 0;
  }
  
  static int

  snd_rme96_getinputtype(struct rme96 *rme96)

  {
  	if (rme96->areg & RME96_AR_ANALOG) {
  		return RME96_INPUT_ANALOG;
  	}
  	return ((rme96->wcreg >> RME96_WCR_BITPOS_INP_0) & 1) +
  		(((rme96->wcreg >> RME96_WCR_BITPOS_INP_1) & 1) << 1);
  }
  
  static void

  snd_rme96_setframelog(struct rme96 *rme96,

  		      int n_channels,
  		      int is_playback)
  {
  	int frlog;
  	
  	if (n_channels == 2) {
  		frlog = 1;
  	} else {
  		/* assume 8 channels */
  		frlog = 3;
  	}
  	if (is_playback) {
  		frlog += (rme96->wcreg & RME96_WCR_MODE24) ? 2 : 1;
  		rme96->playback_frlog = frlog;
  	} else {
  		frlog += (rme96->wcreg & RME96_WCR_MODE24_2) ? 2 : 1;
  		rme96->capture_frlog = frlog;
  	}
  }
  
  static int

  snd_rme96_playback_setformat(struct rme96 *rme96,

  			     int format)
  {
  	switch (format) {
  	case SNDRV_PCM_FORMAT_S16_LE:
  		rme96->wcreg &= ~RME96_WCR_MODE24;
  		break;
  	case SNDRV_PCM_FORMAT_S32_LE:
  		rme96->wcreg |= RME96_WCR_MODE24;
  		break;
  	default:
  		return -EINVAL;
  	}
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	return 0;
  }
  
  static int

  snd_rme96_capture_setformat(struct rme96 *rme96,

  			    int format)
  {
  	switch (format) {
  	case SNDRV_PCM_FORMAT_S16_LE:
  		rme96->wcreg &= ~RME96_WCR_MODE24_2;
  		break;
  	case SNDRV_PCM_FORMAT_S32_LE:
  		rme96->wcreg |= RME96_WCR_MODE24_2;
  		break;
  	default:
  		return -EINVAL;
  	}
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	return 0;
  }
  
  static void

  snd_rme96_set_period_properties(struct rme96 *rme96,

  				size_t period_bytes)
  {
  	switch (period_bytes) {
  	case RME96_LARGE_BLOCK_SIZE:
  		rme96->wcreg &= ~RME96_WCR_ISEL;
  		break;
  	case RME96_SMALL_BLOCK_SIZE:
  		rme96->wcreg |= RME96_WCR_ISEL;
  		break;
  	default:
  		snd_BUG();
  		break;
  	}
  	rme96->wcreg &= ~RME96_WCR_IDIS;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  }
  
  static int

  snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
  			     struct snd_pcm_hw_params *params)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	int err, rate, dummy;

  	runtime->dma_area = (void __force *)(rme96->iobase +
  					     RME96_IO_PLAY_BUFFER);

  	runtime->dma_addr = rme96->port + RME96_IO_PLAY_BUFFER;
  	runtime->dma_bytes = RME96_BUFFER_SIZE;
  
  	spin_lock_irq(&rme96->lock);
  	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
              snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
  	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
  	{
                  /* slave clock */
                  if ((int)params_rate(params) != rate) {
  			spin_unlock_irq(&rme96->lock);
  			return -EIO;                    
                  }
  	} else if ((err = snd_rme96_playback_setrate(rme96, params_rate(params))) < 0) {
  		spin_unlock_irq(&rme96->lock);
  		return err;
  	}
  	if ((err = snd_rme96_playback_setformat(rme96, params_format(params))) < 0) {
  		spin_unlock_irq(&rme96->lock);
  		return err;
  	}
  	snd_rme96_setframelog(rme96, params_channels(params), 1);
  	if (rme96->capture_periodsize != 0) {
  		if (params_period_size(params) << rme96->playback_frlog !=
  		    rme96->capture_periodsize)
  		{
  			spin_unlock_irq(&rme96->lock);
  			return -EBUSY;
  		}
  	}
  	rme96->playback_periodsize =
  		params_period_size(params) << rme96->playback_frlog;
  	snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
  	/* S/PDIF setup */
  	if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
  		rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
  		writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	}
  	spin_unlock_irq(&rme96->lock);
  		
  	return 0;
  }
  
  static int

  snd_rme96_capture_hw_params(struct snd_pcm_substream *substream,
  			    struct snd_pcm_hw_params *params)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	int err, isadat, rate;
  	

  	runtime->dma_area = (void __force *)(rme96->iobase +
  					     RME96_IO_REC_BUFFER);

  	runtime->dma_addr = rme96->port + RME96_IO_REC_BUFFER;
  	runtime->dma_bytes = RME96_BUFFER_SIZE;
  
  	spin_lock_irq(&rme96->lock);
  	if ((err = snd_rme96_capture_setformat(rme96, params_format(params))) < 0) {
  		spin_unlock_irq(&rme96->lock);
  		return err;
  	}
  	if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
  		if ((err = snd_rme96_capture_analog_setrate(rme96,
  							    params_rate(params))) < 0)
  		{
  			spin_unlock_irq(&rme96->lock);
  			return err;
  		}
  	} else if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
                  if ((int)params_rate(params) != rate) {
  			spin_unlock_irq(&rme96->lock);
  			return -EIO;                    
                  }
                  if ((isadat && runtime->hw.channels_min == 2) ||
                      (!isadat && runtime->hw.channels_min == 8))
                  {
  			spin_unlock_irq(&rme96->lock);
  			return -EIO;
                  }
          }
  	snd_rme96_setframelog(rme96, params_channels(params), 0);
  	if (rme96->playback_periodsize != 0) {
  		if (params_period_size(params) << rme96->capture_frlog !=
  		    rme96->playback_periodsize)
  		{
  			spin_unlock_irq(&rme96->lock);
  			return -EBUSY;
  		}
  	}
  	rme96->capture_periodsize =
  		params_period_size(params) << rme96->capture_frlog;
  	snd_rme96_set_period_properties(rme96, rme96->capture_periodsize);
  	spin_unlock_irq(&rme96->lock);
  
  	return 0;
  }
  
  static void

  snd_rme96_playback_start(struct rme96 *rme96,

  			 int from_pause)
  {
  	if (!from_pause) {
  		writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
  	}
  
  	rme96->wcreg |= RME96_WCR_START;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  }
  
  static void

  snd_rme96_capture_start(struct rme96 *rme96,

  			int from_pause)
  {
  	if (!from_pause) {
  		writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
  	}
  
  	rme96->wcreg |= RME96_WCR_START_2;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  }
  
  static void

  snd_rme96_playback_stop(struct rme96 *rme96)

  {
  	/*
  	 * Check if there is an unconfirmed IRQ, if so confirm it, or else
  	 * the hardware will not stop generating interrupts
  	 */
  	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	if (rme96->rcreg & RME96_RCR_IRQ) {
  		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
  	}	
  	rme96->wcreg &= ~RME96_WCR_START;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  }
  
  static void

  snd_rme96_capture_stop(struct rme96 *rme96)

  {
  	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	if (rme96->rcreg & RME96_RCR_IRQ_2) {
  		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
  	}	
  	rme96->wcreg &= ~RME96_WCR_START_2;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  }
  
  static irqreturn_t
  snd_rme96_interrupt(int irq,

  		    void *dev_id)

  {

  	struct rme96 *rme96 = (struct rme96 *)dev_id;

  
  	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	/* fastpath out, to ease interrupt sharing */
  	if (!((rme96->rcreg & RME96_RCR_IRQ) ||
  	      (rme96->rcreg & RME96_RCR_IRQ_2)))
  	{
  		return IRQ_NONE;
  	}
  	
  	if (rme96->rcreg & RME96_RCR_IRQ) {
  		/* playback */
                  snd_pcm_period_elapsed(rme96->playback_substream);
  		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
  	}
  	if (rme96->rcreg & RME96_RCR_IRQ_2) {
  		/* capture */
  		snd_pcm_period_elapsed(rme96->capture_substream);		
  		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
  	}
  	return IRQ_HANDLED;
  }
  
  static unsigned int period_bytes[] = { RME96_SMALL_BLOCK_SIZE, RME96_LARGE_BLOCK_SIZE };

  static struct snd_pcm_hw_constraint_list hw_constraints_period_bytes = {

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

  static void
  rme96_set_buffer_size_constraint(struct rme96 *rme96,
  				 struct snd_pcm_runtime *runtime)
  {
  	unsigned int size;
  
  	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
  				     RME96_BUFFER_SIZE, RME96_BUFFER_SIZE);
  	if ((size = rme96->playback_periodsize) != 0 ||
  	    (size = rme96->capture_periodsize) != 0)
  		snd_pcm_hw_constraint_minmax(runtime,
  					     SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
  					     size, size);
  	else
  		snd_pcm_hw_constraint_list(runtime, 0,
  					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
  					   &hw_constraints_period_bytes);
  }

  static int

  snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)

  {
          int rate, dummy;

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	spin_lock_irq(&rme96->lock);	
          if (rme96->playback_substream != NULL) {
  		spin_unlock_irq(&rme96->lock);
                  return -EBUSY;
          }
  	rme96->wcreg &= ~RME96_WCR_ADAT;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	rme96->playback_substream = substream;
  	spin_unlock_irq(&rme96->lock);
  
  	runtime->hw = snd_rme96_playback_spdif_info;
  	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
              snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
  	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
  	{
                  /* slave clock */

                  runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);

                  runtime->hw.rate_min = rate;
                  runtime->hw.rate_max = rate;
  	}        

  	rme96_set_buffer_size_constraint(rme96, runtime);

  
  	rme96->wcreg_spdif_stream = rme96->wcreg_spdif;
  	rme96->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
  	snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
  		       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
  	return 0;
  }
  
  static int

  snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)

  {
          int isadat, rate;

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	runtime->hw = snd_rme96_capture_spdif_info;
          if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
              (rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0)
          {
                  if (isadat) {
                          return -EIO;
                  }

                  runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);

                  runtime->hw.rate_min = rate;
                  runtime->hw.rate_max = rate;
          }
          
  	spin_lock_irq(&rme96->lock);
          if (rme96->capture_substream != NULL) {
  		spin_unlock_irq(&rme96->lock);
                  return -EBUSY;
          }
  	rme96->capture_substream = substream;
  	spin_unlock_irq(&rme96->lock);
  	

  	rme96_set_buffer_size_constraint(rme96, runtime);

  	return 0;
  }
  
  static int

  snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)

  {
          int rate, dummy;

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;        

  	spin_lock_irq(&rme96->lock);	
          if (rme96->playback_substream != NULL) {
  		spin_unlock_irq(&rme96->lock);
                  return -EBUSY;
          }
  	rme96->wcreg |= RME96_WCR_ADAT;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	rme96->playback_substream = substream;
  	spin_unlock_irq(&rme96->lock);
  	
  	runtime->hw = snd_rme96_playback_adat_info;
  	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
              snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
  	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
  	{
                  /* slave clock */

                  runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);

                  runtime->hw.rate_min = rate;
                  runtime->hw.rate_max = rate;
  	}        

  	rme96_set_buffer_size_constraint(rme96, runtime);

  	return 0;
  }
  
  static int

  snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)

  {
          int isadat, rate;

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
  	struct snd_pcm_runtime *runtime = substream->runtime;

  	runtime->hw = snd_rme96_capture_adat_info;
          if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
                  /* makes no sense to use analog input. Note that analog
                     expension cards AEB4/8-I are RME96_INPUT_INTERNAL */
                  return -EIO;
          }
          if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
                  if (!isadat) {
                          return -EIO;
                  }

                  runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);

                  runtime->hw.rate_min = rate;
                  runtime->hw.rate_max = rate;
          }
          
  	spin_lock_irq(&rme96->lock);	
          if (rme96->capture_substream != NULL) {
  		spin_unlock_irq(&rme96->lock);
                  return -EBUSY;
          }
  	rme96->capture_substream = substream;
  	spin_unlock_irq(&rme96->lock);

  	rme96_set_buffer_size_constraint(rme96, runtime);

  	return 0;
  }
  
  static int

  snd_rme96_playback_close(struct snd_pcm_substream *substream)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	int spdif = 0;
  
  	spin_lock_irq(&rme96->lock);	
  	if (RME96_ISPLAYING(rme96)) {
  		snd_rme96_playback_stop(rme96);
  	}
  	rme96->playback_substream = NULL;
  	rme96->playback_periodsize = 0;
  	spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
  	spin_unlock_irq(&rme96->lock);
  	if (spdif) {
  		rme96->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
  		snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
  			       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
  	}
  	return 0;
  }
  
  static int

  snd_rme96_capture_close(struct snd_pcm_substream *substream)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	
  	spin_lock_irq(&rme96->lock);	
  	if (RME96_ISRECORDING(rme96)) {
  		snd_rme96_capture_stop(rme96);
  	}
  	rme96->capture_substream = NULL;
  	rme96->capture_periodsize = 0;
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  
  static int

  snd_rme96_playback_prepare(struct snd_pcm_substream *substream)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	
  	spin_lock_irq(&rme96->lock);	
  	if (RME96_ISPLAYING(rme96)) {
  		snd_rme96_playback_stop(rme96);
  	}
  	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  
  static int

  snd_rme96_capture_prepare(struct snd_pcm_substream *substream)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	
  	spin_lock_irq(&rme96->lock);	
  	if (RME96_ISRECORDING(rme96)) {
  		snd_rme96_capture_stop(rme96);
  	}
  	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  
  static int

  snd_rme96_playback_trigger(struct snd_pcm_substream *substream, 

  			   int cmd)
  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  
  	switch (cmd) {
  	case SNDRV_PCM_TRIGGER_START:
  		if (!RME96_ISPLAYING(rme96)) {
  			if (substream != rme96->playback_substream) {
  				return -EBUSY;
  			}
  			snd_rme96_playback_start(rme96, 0);
  		}
  		break;
  
  	case SNDRV_PCM_TRIGGER_STOP:
  		if (RME96_ISPLAYING(rme96)) {
  			if (substream != rme96->playback_substream) {
  				return -EBUSY;
  			}
  			snd_rme96_playback_stop(rme96);
  		}
  		break;
  
  	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
  		if (RME96_ISPLAYING(rme96)) {
  			snd_rme96_playback_stop(rme96);
  		}
  		break;
  
  	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
  		if (!RME96_ISPLAYING(rme96)) {
  			snd_rme96_playback_start(rme96, 1);
  		}
  		break;
  		
  	default:
  		return -EINVAL;
  	}
  	return 0;
  }
  
  static int

  snd_rme96_capture_trigger(struct snd_pcm_substream *substream, 

  			  int cmd)
  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  
  	switch (cmd) {
  	case SNDRV_PCM_TRIGGER_START:
  		if (!RME96_ISRECORDING(rme96)) {
  			if (substream != rme96->capture_substream) {
  				return -EBUSY;
  			}
  			snd_rme96_capture_start(rme96, 0);
  		}
  		break;
  
  	case SNDRV_PCM_TRIGGER_STOP:
  		if (RME96_ISRECORDING(rme96)) {
  			if (substream != rme96->capture_substream) {
  				return -EBUSY;
  			}
  			snd_rme96_capture_stop(rme96);
  		}
  		break;
  
  	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
  		if (RME96_ISRECORDING(rme96)) {
  			snd_rme96_capture_stop(rme96);
  		}
  		break;
  
  	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
  		if (!RME96_ISRECORDING(rme96)) {
  			snd_rme96_capture_start(rme96, 1);
  		}
  		break;
  		
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static snd_pcm_uframes_t

  snd_rme96_playback_pointer(struct snd_pcm_substream *substream)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	return snd_rme96_playback_ptr(rme96);
  }
  
  static snd_pcm_uframes_t

  snd_rme96_capture_pointer(struct snd_pcm_substream *substream)

  {

  	struct rme96 *rme96 = snd_pcm_substream_chip(substream);

  	return snd_rme96_capture_ptr(rme96);
  }

  static struct snd_pcm_ops snd_rme96_playback_spdif_ops = {

  	.open =		snd_rme96_playback_spdif_open,
  	.close =	snd_rme96_playback_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_rme96_playback_hw_params,
  	.prepare =	snd_rme96_playback_prepare,
  	.trigger =	snd_rme96_playback_trigger,
  	.pointer =	snd_rme96_playback_pointer,
  	.copy =		snd_rme96_playback_copy,
  	.silence =	snd_rme96_playback_silence,
  	.mmap =		snd_pcm_lib_mmap_iomem,
  };

  static struct snd_pcm_ops snd_rme96_capture_spdif_ops = {

  	.open =		snd_rme96_capture_spdif_open,
  	.close =	snd_rme96_capture_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_rme96_capture_hw_params,
  	.prepare =	snd_rme96_capture_prepare,
  	.trigger =	snd_rme96_capture_trigger,
  	.pointer =	snd_rme96_capture_pointer,
  	.copy =		snd_rme96_capture_copy,
  	.mmap =		snd_pcm_lib_mmap_iomem,
  };

  static struct snd_pcm_ops snd_rme96_playback_adat_ops = {

  	.open =		snd_rme96_playback_adat_open,
  	.close =	snd_rme96_playback_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_rme96_playback_hw_params,
  	.prepare =	snd_rme96_playback_prepare,
  	.trigger =	snd_rme96_playback_trigger,
  	.pointer =	snd_rme96_playback_pointer,
  	.copy =		snd_rme96_playback_copy,
  	.silence =	snd_rme96_playback_silence,
  	.mmap =		snd_pcm_lib_mmap_iomem,
  };

  static struct snd_pcm_ops snd_rme96_capture_adat_ops = {

  	.open =		snd_rme96_capture_adat_open,
  	.close =	snd_rme96_capture_close,
  	.ioctl =	snd_pcm_lib_ioctl,
  	.hw_params =	snd_rme96_capture_hw_params,
  	.prepare =	snd_rme96_capture_prepare,
  	.trigger =	snd_rme96_capture_trigger,
  	.pointer =	snd_rme96_capture_pointer,
  	.copy =		snd_rme96_capture_copy,
  	.mmap =		snd_pcm_lib_mmap_iomem,
  };
  
  static void
  snd_rme96_free(void *private_data)
  {

  	struct rme96 *rme96 = (struct rme96 *)private_data;

  
  	if (rme96 == NULL) {
  	        return;
  	}
  	if (rme96->irq >= 0) {
  		snd_rme96_playback_stop(rme96);
  		snd_rme96_capture_stop(rme96);
  		rme96->areg &= ~RME96_AR_DAC_EN;
  		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  		free_irq(rme96->irq, (void *)rme96);
  		rme96->irq = -1;
  	}
  	if (rme96->iobase) {
  		iounmap(rme96->iobase);
  		rme96->iobase = NULL;
  	}
  	if (rme96->port) {
  		pci_release_regions(rme96->pci);
  		rme96->port = 0;
  	}
  	pci_disable_device(rme96->pci);
  }
  
  static void

  snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)

  {

  	struct rme96 *rme96 = pcm->private_data;

  	rme96->spdif_pcm = NULL;
  }
  
  static void

  snd_rme96_free_adat_pcm(struct snd_pcm *pcm)

  {

  	struct rme96 *rme96 = pcm->private_data;

  	rme96->adat_pcm = NULL;
  }
  
  static int __devinit

  snd_rme96_create(struct rme96 *rme96)

  {
  	struct pci_dev *pci = rme96->pci;
  	int err;
  
  	rme96->irq = -1;
  	spin_lock_init(&rme96->lock);
  
  	if ((err = pci_enable_device(pci)) < 0)
  		return err;
  
  	if ((err = pci_request_regions(pci, "RME96")) < 0)
  		return err;
  	rme96->port = pci_resource_start(rme96->pci, 0);

  	rme96->iobase = ioremap_nocache(rme96->port, RME96_IO_SIZE);
  	if (!rme96->iobase) {

  		snd_printk(KERN_ERR "unable to remap memory region 0x%lx-0x%lx
  ", rme96->port, rme96->port + RME96_IO_SIZE - 1);
  		return -ENOMEM;
  	}

  	if (request_irq(pci->irq, snd_rme96_interrupt, IRQF_SHARED,

  			KBUILD_MODNAME, rme96)) {

  		snd_printk(KERN_ERR "unable to grab IRQ %d
  ", pci->irq);

  		return -EBUSY;
  	}
  	rme96->irq = pci->irq;

  	/* read the card's revision number */
  	pci_read_config_byte(pci, 8, &rme96->rev);	
  	
  	/* set up ALSA pcm device for S/PDIF */
  	if ((err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
  			       1, 1, &rme96->spdif_pcm)) < 0)
  	{
  		return err;
  	}
  	rme96->spdif_pcm->private_data = rme96;
  	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
  	strcpy(rme96->spdif_pcm->name, "Digi96 IEC958");
  	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
  	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);
  
  	rme96->spdif_pcm->info_flags = 0;
  
  	/* set up ALSA pcm device for ADAT */

  	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {

  		/* ADAT is not available on the base model */
  		rme96->adat_pcm = NULL;
  	} else {
  		if ((err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
  				       1, 1, &rme96->adat_pcm)) < 0)
  		{
  			return err;
  		}		
  		rme96->adat_pcm->private_data = rme96;
  		rme96->adat_pcm->private_free = snd_rme96_free_adat_pcm;
  		strcpy(rme96->adat_pcm->name, "Digi96 ADAT");
  		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_adat_ops);
  		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_adat_ops);
  		
  		rme96->adat_pcm->info_flags = 0;
  	}
  
  	rme96->playback_periodsize = 0;
  	rme96->capture_periodsize = 0;
  	
  	/* make sure playback/capture is stopped, if by some reason active */
  	snd_rme96_playback_stop(rme96);
  	snd_rme96_capture_stop(rme96);
  	
  	/* set default values in registers */
  	rme96->wcreg =
  		RME96_WCR_FREQ_1 | /* set 44.1 kHz playback */
  		RME96_WCR_SEL |    /* normal playback */
  		RME96_WCR_MASTER | /* set to master clock mode */
  		RME96_WCR_INP_0;   /* set coaxial input */
  
  	rme96->areg = RME96_AR_FREQPAD_1; /* set 44.1 kHz analog capture */
  
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  	
  	/* reset the ADC */
  	writel(rme96->areg | RME96_AR_PD2,
  	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);	
  
  	/* reset and enable the DAC (order is important). */
  	snd_rme96_reset_dac(rme96);
  	rme96->areg |= RME96_AR_DAC_EN;
  	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
  
  	/* reset playback and record buffer pointers */
  	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
  	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
  
  	/* reset volume */
  	rme96->vol[0] = rme96->vol[1] = 0;
  	if (RME96_HAS_ANALOG_OUT(rme96)) {
  		snd_rme96_apply_dac_volume(rme96);
  	}
  	
  	/* init switch interface */
  	if ((err = snd_rme96_create_switches(rme96->card, rme96)) < 0) {
  		return err;
  	}
  
          /* init proc interface */
  	snd_rme96_proc_init(rme96);
  	
  	return 0;
  }
  
  /*
   * proc interface
   */
  
  static void 

  snd_rme96_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)

  {
  	int n;

  	struct rme96 *rme96 = entry->private_data;

  	
  	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
  
  	snd_iprintf(buffer, rme96->card->longname);
  	snd_iprintf(buffer, " (index #%d)
  ", rme96->card->number + 1);
  
  	snd_iprintf(buffer, "
  General settings
  ");
  	if (rme96->wcreg & RME96_WCR_IDIS) {
  		snd_iprintf(buffer, "  period size: N/A (interrupts "
  			    "disabled)
  ");
  	} else if (rme96->wcreg & RME96_WCR_ISEL) {
  		snd_iprintf(buffer, "  period size: 2048 bytes
  ");
  	} else {
  		snd_iprintf(buffer, "  period size: 8192 bytes
  ");
  	}	
  	snd_iprintf(buffer, "
  Input settings
  ");
  	switch (snd_rme96_getinputtype(rme96)) {
  	case RME96_INPUT_OPTICAL:
  		snd_iprintf(buffer, "  input: optical");
  		break;
  	case RME96_INPUT_COAXIAL:
  		snd_iprintf(buffer, "  input: coaxial");
  		break;
  	case RME96_INPUT_INTERNAL:
  		snd_iprintf(buffer, "  input: internal");
  		break;
  	case RME96_INPUT_XLR:
  		snd_iprintf(buffer, "  input: XLR");
  		break;
  	case RME96_INPUT_ANALOG:
  		snd_iprintf(buffer, "  input: analog");
  		break;
  	}
  	if (snd_rme96_capture_getrate(rme96, &n) < 0) {
  		snd_iprintf(buffer, "
    sample rate: no valid signal
  ");
  	} else {
  		if (n) {
  			snd_iprintf(buffer, " (8 channels)
  ");
  		} else {
  			snd_iprintf(buffer, " (2 channels)
  ");
  		}
  		snd_iprintf(buffer, "  sample rate: %d Hz
  ",
  			    snd_rme96_capture_getrate(rme96, &n));
  	}
  	if (rme96->wcreg & RME96_WCR_MODE24_2) {
  		snd_iprintf(buffer, "  sample format: 24 bit
  ");
  	} else {
  		snd_iprintf(buffer, "  sample format: 16 bit
  ");
  	}
  	
  	snd_iprintf(buffer, "
  Output settings
  ");
  	if (rme96->wcreg & RME96_WCR_SEL) {
  		snd_iprintf(buffer, "  output signal: normal playback
  ");
  	} else {
  		snd_iprintf(buffer, "  output signal: same as input
  ");
  	}
  	snd_iprintf(buffer, "  sample rate: %d Hz
  ",
  		    snd_rme96_playback_getrate(rme96));
  	if (rme96->wcreg & RME96_WCR_MODE24) {
  		snd_iprintf(buffer, "  sample format: 24 bit
  ");
  	} else {
  		snd_iprintf(buffer, "  sample format: 16 bit
  ");
  	}
  	if (rme96->areg & RME96_AR_WSEL) {
  		snd_iprintf(buffer, "  sample clock source: word clock
  ");
  	} else if (rme96->wcreg & RME96_WCR_MASTER) {
  		snd_iprintf(buffer, "  sample clock source: internal
  ");
  	} else if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
  		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to analog input setting)
  ");
  	} else if (snd_rme96_capture_getrate(rme96, &n) < 0) {
  		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to no valid signal)
  ");
  	} else {
  		snd_iprintf(buffer, "  sample clock source: autosync
  ");
  	}
  	if (rme96->wcreg & RME96_WCR_PRO) {
  		snd_iprintf(buffer, "  format: AES/EBU (professional)
  ");
  	} else {
  		snd_iprintf(buffer, "  format: IEC958 (consumer)
  ");
  	}
  	if (rme96->wcreg & RME96_WCR_EMP) {
  		snd_iprintf(buffer, "  emphasis: on
  ");
  	} else {
  		snd_iprintf(buffer, "  emphasis: off
  ");
  	}
  	if (rme96->wcreg & RME96_WCR_DOLBY) {
  		snd_iprintf(buffer, "  non-audio (dolby): on
  ");
  	} else {
  		snd_iprintf(buffer, "  non-audio (dolby): off
  ");
  	}
  	if (RME96_HAS_ANALOG_IN(rme96)) {
  		snd_iprintf(buffer, "
  Analog output settings
  ");
  		switch (snd_rme96_getmontracks(rme96)) {
  		case RME96_MONITOR_TRACKS_1_2:
  			snd_iprintf(buffer, "  monitored ADAT tracks: 1+2
  ");
  			break;
  		case RME96_MONITOR_TRACKS_3_4:
  			snd_iprintf(buffer, "  monitored ADAT tracks: 3+4
  ");
  			break;
  		case RME96_MONITOR_TRACKS_5_6:
  			snd_iprintf(buffer, "  monitored ADAT tracks: 5+6
  ");
  			break;
  		case RME96_MONITOR_TRACKS_7_8:
  			snd_iprintf(buffer, "  monitored ADAT tracks: 7+8
  ");
  			break;
  		}
  		switch (snd_rme96_getattenuation(rme96)) {
  		case RME96_ATTENUATION_0:
  			snd_iprintf(buffer, "  attenuation: 0 dB
  ");
  			break;
  		case RME96_ATTENUATION_6:
  			snd_iprintf(buffer, "  attenuation: -6 dB
  ");
  			break;
  		case RME96_ATTENUATION_12:
  			snd_iprintf(buffer, "  attenuation: -12 dB
  ");
  			break;
  		case RME96_ATTENUATION_18:
  			snd_iprintf(buffer, "  attenuation: -18 dB
  ");
  			break;
  		}
  		snd_iprintf(buffer, "  volume left: %u
  ", rme96->vol[0]);
  		snd_iprintf(buffer, "  volume right: %u
  ", rme96->vol[1]);
  	}
  }
  
  static void __devinit 

  snd_rme96_proc_init(struct rme96 *rme96)

  {

  	struct snd_info_entry *entry;

  
  	if (! snd_card_proc_new(rme96->card, "rme96", &entry))

  		snd_info_set_text_ops(entry, rme96, snd_rme96_proc_read);

  }
  
  /*
   * control interface
   */

  #define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info

  static int

  snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
  	spin_lock_irq(&rme96->lock);
  	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  static int

  snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	unsigned int val;
  	int change;
  	
  	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
  	spin_lock_irq(&rme96->lock);
  	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
  	change = val != rme96->wcreg;
  	rme96->wcreg = val;
  	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }
  
  static int

  snd_rme96_info_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	static char *_texts[5] = { "Optical", "Coaxial", "Internal", "XLR", "Analog" };

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	char *texts[5] = { _texts[0], _texts[1], _texts[2], _texts[3], _texts[4] };
  	
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
  	uinfo->count = 1;
  	switch (rme96->pci->device) {

  	case PCI_DEVICE_ID_RME_DIGI96:
  	case PCI_DEVICE_ID_RME_DIGI96_8:

  		uinfo->value.enumerated.items = 3;
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:

  		uinfo->value.enumerated.items = 4;
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:

  		if (rme96->rev > 4) {
  			/* PST */
  			uinfo->value.enumerated.items = 4;
  			texts[3] = _texts[4]; /* Analog instead of XLR */
  		} else {
  			/* PAD */
  			uinfo->value.enumerated.items = 5;
  		}
  		break;
  	default:
  		snd_BUG();
  		break;
  	}
  	if (uinfo->value.enumerated.item > uinfo->value.enumerated.items - 1) {
  		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
  	}
  	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
  	return 0;
  }
  static int

  snd_rme96_get_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	unsigned int items = 3;
  	
  	spin_lock_irq(&rme96->lock);
  	ucontrol->value.enumerated.item[0] = snd_rme96_getinputtype(rme96);
  	
  	switch (rme96->pci->device) {

  	case PCI_DEVICE_ID_RME_DIGI96:
  	case PCI_DEVICE_ID_RME_DIGI96_8:

  		items = 3;
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:

  		items = 4;
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:

  		if (rme96->rev > 4) {
  			/* for handling PST case, (INPUT_ANALOG is moved to INPUT_XLR */
  			if (ucontrol->value.enumerated.item[0] == RME96_INPUT_ANALOG) {
  				ucontrol->value.enumerated.item[0] = RME96_INPUT_XLR;
  			}
  			items = 4;
  		} else {
  			items = 5;
  		}
  		break;
  	default:
  		snd_BUG();
  		break;
  	}
  	if (ucontrol->value.enumerated.item[0] >= items) {
  		ucontrol->value.enumerated.item[0] = items - 1;
  	}
  	
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  static int

  snd_rme96_put_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	unsigned int val;
  	int change, items = 3;
  	
  	switch (rme96->pci->device) {

  	case PCI_DEVICE_ID_RME_DIGI96:
  	case PCI_DEVICE_ID_RME_DIGI96_8:

  		items = 3;
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:

  		items = 4;
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:

  		if (rme96->rev > 4) {
  			items = 4;
  		} else {
  			items = 5;
  		}
  		break;
  	default:
  		snd_BUG();
  		break;
  	}
  	val = ucontrol->value.enumerated.item[0] % items;
  	
  	/* special case for PST */

  	if (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && rme96->rev > 4) {

  		if (val == RME96_INPUT_XLR) {
  			val = RME96_INPUT_ANALOG;
  		}
  	}
  	
  	spin_lock_irq(&rme96->lock);
  	change = (int)val != snd_rme96_getinputtype(rme96);
  	snd_rme96_setinputtype(rme96, val);
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }
  
  static int

  snd_rme96_info_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	static char *texts[3] = { "AutoSync", "Internal", "Word" };
  	
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
  	uinfo->count = 1;
  	uinfo->value.enumerated.items = 3;
  	if (uinfo->value.enumerated.item > 2) {
  		uinfo->value.enumerated.item = 2;
  	}
  	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
  	return 0;
  }
  static int

  snd_rme96_get_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
  	spin_lock_irq(&rme96->lock);
  	ucontrol->value.enumerated.item[0] = snd_rme96_getclockmode(rme96);
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  static int

  snd_rme96_put_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	unsigned int val;
  	int change;
  	
  	val = ucontrol->value.enumerated.item[0] % 3;
  	spin_lock_irq(&rme96->lock);
  	change = (int)val != snd_rme96_getclockmode(rme96);
  	snd_rme96_setclockmode(rme96, val);
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }
  
  static int

  snd_rme96_info_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	static char *texts[4] = { "0 dB", "-6 dB", "-12 dB", "-18 dB" };
  	
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
  	uinfo->count = 1;
  	uinfo->value.enumerated.items = 4;
  	if (uinfo->value.enumerated.item > 3) {
  		uinfo->value.enumerated.item = 3;
  	}
  	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
  	return 0;
  }
  static int

  snd_rme96_get_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
  	spin_lock_irq(&rme96->lock);
  	ucontrol->value.enumerated.item[0] = snd_rme96_getattenuation(rme96);
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  static int

  snd_rme96_put_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	unsigned int val;
  	int change;
  	
  	val = ucontrol->value.enumerated.item[0] % 4;
  	spin_lock_irq(&rme96->lock);
  
  	change = (int)val != snd_rme96_getattenuation(rme96);
  	snd_rme96_setattenuation(rme96, val);
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }
  
  static int

  snd_rme96_info_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	static char *texts[4] = { "1+2", "3+4", "5+6", "7+8" };
  	
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
  	uinfo->count = 1;
  	uinfo->value.enumerated.items = 4;
  	if (uinfo->value.enumerated.item > 3) {
  		uinfo->value.enumerated.item = 3;
  	}
  	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
  	return 0;
  }
  static int

  snd_rme96_get_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
  	spin_lock_irq(&rme96->lock);
  	ucontrol->value.enumerated.item[0] = snd_rme96_getmontracks(rme96);
  	spin_unlock_irq(&rme96->lock);
  	return 0;
  }
  static int

  snd_rme96_put_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	unsigned int val;
  	int change;
  	
  	val = ucontrol->value.enumerated.item[0] % 4;
  	spin_lock_irq(&rme96->lock);
  	change = (int)val != snd_rme96_getmontracks(rme96);
  	snd_rme96_setmontracks(rme96, val);
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }

  static u32 snd_rme96_convert_from_aes(struct snd_aes_iec958 *aes)

  {
  	u32 val = 0;
  	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME96_WCR_PRO : 0;
  	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME96_WCR_DOLBY : 0;
  	if (val & RME96_WCR_PRO)
  		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
  	else
  		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
  	return val;
  }

  static void snd_rme96_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)

  {
  	aes->status[0] = ((val & RME96_WCR_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
  			 ((val & RME96_WCR_DOLBY) ? IEC958_AES0_NONAUDIO : 0);
  	if (val & RME96_WCR_PRO)
  		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
  	else
  		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
  }

  static int snd_rme96_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
  	uinfo->count = 1;
  	return 0;
  }

  static int snd_rme96_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
  	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif);
  	return 0;
  }

  static int snd_rme96_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	int change;
  	u32 val;
  	
  	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
  	spin_lock_irq(&rme96->lock);
  	change = val != rme96->wcreg_spdif;
  	rme96->wcreg_spdif = val;
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }

  static int snd_rme96_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
  	uinfo->count = 1;
  	return 0;
  }

  static int snd_rme96_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
  	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif_stream);
  	return 0;
  }

  static int snd_rme96_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	int change;
  	u32 val;
  	
  	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
  	spin_lock_irq(&rme96->lock);
  	change = val != rme96->wcreg_spdif_stream;
  	rme96->wcreg_spdif_stream = val;
  	rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
  	rme96->wcreg |= val;
  	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
  	spin_unlock_irq(&rme96->lock);
  	return change;
  }

  static int snd_rme96_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {
  	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
  	uinfo->count = 1;
  	return 0;
  }

  static int snd_rme96_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

  {
  	ucontrol->value.iec958.status[0] = kcontrol->private_value;
  	return 0;
  }
  
  static int

  snd_rme96_dac_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  	
          uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
          uinfo->count = 2;
          uinfo->value.integer.min = 0;
  	uinfo->value.integer.max = RME96_185X_MAX_OUT(rme96);
          return 0;
  }
  
  static int

  snd_rme96_dac_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

  
  	spin_lock_irq(&rme96->lock);
          u->value.integer.value[0] = rme96->vol[0];
          u->value.integer.value[1] = rme96->vol[1];
  	spin_unlock_irq(&rme96->lock);
  
          return 0;
  }
  
  static int

  snd_rme96_dac_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)

  {

  	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);

          int change = 0;

  	unsigned int vol, maxvol;

  
  	if (!RME96_HAS_ANALOG_OUT(rme96))

  		return -EINVAL;

  	maxvol = RME96_185X_MAX_OUT(rme96);

  	spin_lock_irq(&rme96->lock);

  	vol = u->value.integer.value[0];
  	if (vol != rme96->vol[0] && vol <= maxvol) {
  		rme96->vol[0] = vol;
  		change = 1;
  	}
  	vol = u->value.integer.value[1];
  	if (vol != rme96->vol[1] && vol <= maxvol) {
  		rme96->vol[1] = vol;
  		change = 1;

  	}

  	if (change)
  		snd_rme96_apply_dac_volume(rme96);

  	spin_unlock_irq(&rme96->lock);
  
          return change;
  }

  static struct snd_kcontrol_new snd_rme96_controls[] = {

  {
  	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
  	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
  	.info =		snd_rme96_control_spdif_info,
  	.get =		snd_rme96_control_spdif_get,
  	.put =		snd_rme96_control_spdif_put
  },
  {
  	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
  	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
  	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
  	.info =		snd_rme96_control_spdif_stream_info,
  	.get =		snd_rme96_control_spdif_stream_get,
  	.put =		snd_rme96_control_spdif_stream_put
  },
  {
  	.access =	SNDRV_CTL_ELEM_ACCESS_READ,

  	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,

  	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
  	.info =		snd_rme96_control_spdif_mask_info,
  	.get =		snd_rme96_control_spdif_mask_get,
  	.private_value = IEC958_AES0_NONAUDIO |
  			IEC958_AES0_PROFESSIONAL |
  			IEC958_AES0_CON_EMPHASIS
  },
  {
  	.access =	SNDRV_CTL_ELEM_ACCESS_READ,

  	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,

  	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
  	.info =		snd_rme96_control_spdif_mask_info,
  	.get =		snd_rme96_control_spdif_mask_get,
  	.private_value = IEC958_AES0_NONAUDIO |
  			IEC958_AES0_PROFESSIONAL |
  			IEC958_AES0_PRO_EMPHASIS
  },
  {
          .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Input Connector",
  	.info =         snd_rme96_info_inputtype_control, 
  	.get =          snd_rme96_get_inputtype_control,
  	.put =          snd_rme96_put_inputtype_control 
  },
  {
          .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Loopback Input",
  	.info =         snd_rme96_info_loopback_control,
  	.get =          snd_rme96_get_loopback_control,
  	.put =          snd_rme96_put_loopback_control
  },
  {
          .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Sample Clock Source",
  	.info =         snd_rme96_info_clockmode_control, 
  	.get =          snd_rme96_get_clockmode_control,
  	.put =          snd_rme96_put_clockmode_control
  },
  {
          .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Monitor Tracks",
  	.info =         snd_rme96_info_montracks_control, 
  	.get =          snd_rme96_get_montracks_control,
  	.put =          snd_rme96_put_montracks_control
  },
  {
          .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "Attenuation",
  	.info =         snd_rme96_info_attenuation_control, 
  	.get =          snd_rme96_get_attenuation_control,
  	.put =          snd_rme96_put_attenuation_control
  },
  {
          .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
  	.name =         "DAC Playback Volume",
  	.info =         snd_rme96_dac_volume_info,
  	.get =          snd_rme96_dac_volume_get,
  	.put =          snd_rme96_dac_volume_put
  }
  };
  
  static int

  snd_rme96_create_switches(struct snd_card *card,
  			  struct rme96 *rme96)

  {
  	int idx, err;

  	struct snd_kcontrol *kctl;

  
  	for (idx = 0; idx < 7; idx++) {
  		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
  			return err;
  		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
  			rme96->spdif_ctl = kctl;
  	}
  
  	if (RME96_HAS_ANALOG_OUT(rme96)) {
  		for (idx = 7; idx < 10; idx++)
  			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
  				return err;
  	}
  	
  	return 0;
  }
  
  /*
   * Card initialisation
   */

  static void snd_rme96_card_free(struct snd_card *card)

  {
  	snd_rme96_free(card->private_data);
  }
  
  static int __devinit
  snd_rme96_probe(struct pci_dev *pci,
  		const struct pci_device_id *pci_id)
  {
  	static int dev;

  	struct rme96 *rme96;
  	struct snd_card *card;

  	int err;
  	u8 val;
  
  	if (dev >= SNDRV_CARDS) {
  		return -ENODEV;
  	}
  	if (!enable[dev]) {
  		dev++;
  		return -ENOENT;
  	}

  	err = snd_card_create(index[dev], id[dev], THIS_MODULE,
  			      sizeof(struct rme96), &card);
  	if (err < 0)
  		return err;

  	card->private_free = snd_rme96_card_free;

  	rme96 = card->private_data;

  	rme96->card = card;
  	rme96->pci = pci;
  	snd_card_set_dev(card, &pci->dev);
  	if ((err = snd_rme96_create(rme96)) < 0) {
  		snd_card_free(card);
  		return err;
  	}
  	
  	strcpy(card->driver, "Digi96");
  	switch (rme96->pci->device) {

  	case PCI_DEVICE_ID_RME_DIGI96:

  		strcpy(card->shortname, "RME Digi96");
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8:

  		strcpy(card->shortname, "RME Digi96/8");
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:

  		strcpy(card->shortname, "RME Digi96/8 PRO");
  		break;

  	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:

  		pci_read_config_byte(rme96->pci, 8, &val);
  		if (val < 5) {
  			strcpy(card->shortname, "RME Digi96/8 PAD");
  		} else {
  			strcpy(card->shortname, "RME Digi96/8 PST");
  		}
  		break;
  	}
  	sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname,
  		rme96->port, rme96->irq);
  	
  	if ((err = snd_card_register(card)) < 0) {
  		snd_card_free(card);
  		return err;	
  	}
  	pci_set_drvdata(pci, card);
  	dev++;
  	return 0;
  }
  
  static void __devexit snd_rme96_remove(struct pci_dev *pci)
  {
  	snd_card_free(pci_get_drvdata(pci));
  	pci_set_drvdata(pci, NULL);
  }
  
  static struct pci_driver driver = {

  	.name = KBUILD_MODNAME,

  	.id_table = snd_rme96_ids,
  	.probe = snd_rme96_probe,
  	.remove = __devexit_p(snd_rme96_remove),
  };
  
  static int __init alsa_card_rme96_init(void)
  {

  	return pci_register_driver(&driver);

  }
  
  static void __exit alsa_card_rme96_exit(void)
  {
  	pci_unregister_driver(&driver);
  }
  
  module_init(alsa_card_rme96_init)
  module_exit(alsa_card_rme96_exit)