sound/pci/cs4281.c

   1 /*
   2  *  Driver for Cirrus Logic CS4281 based PCI soundcard
   3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <sound/driver.h>
  23 #include <asm/io.h>
  24 #include <linux/delay.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/init.h>
  27 #include <linux/pci.h>
  28 #include <linux/slab.h>
  29 #include <linux/gameport.h>
  30 #include <linux/moduleparam.h>
  31 #include <sound/core.h>
  32 #include <sound/control.h>
  33 #include <sound/pcm.h>
  34 #include <sound/rawmidi.h>
  35 #include <sound/ac97_codec.h>
  36 #include <sound/tlv.h>
  37 #include <sound/opl3.h>
  38 #include <sound/initval.h>
  39
  40
  41 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  42 MODULE_DESCRIPTION("Cirrus Logic CS4281");
  43 MODULE_LICENSE("GPL");
  44 MODULE_SUPPORTED_DEVICE("{{Cirrus Logic,CS4281}}");
  45
  46 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  47 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  48 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable switches */
  49 static int dual_codec[SNDRV_CARDS];     /* dual codec */
  50
  51 module_param_array(index, int, NULL, 0444);
  52 MODULE_PARM_DESC(index, "Index value for CS4281 soundcard.");
  53 module_param_array(id, charp, NULL, 0444);
  54 MODULE_PARM_DESC(id, "ID string for CS4281 soundcard.");
  55 module_param_array(enable, bool, NULL, 0444);
  56 MODULE_PARM_DESC(enable, "Enable CS4281 soundcard.");
  57 module_param_array(dual_codec, bool, NULL, 0444);
  58 MODULE_PARM_DESC(dual_codec, "Secondary Codec ID (0 = disabled).");
  59
  60 /*
  61  *  Direct registers
  62  */
  63
  64 #define CS4281_BA0_SIZE         0x1000
  65 #define CS4281_BA1_SIZE         0x10000
  66
  67 /*
  68  *  BA0 registers
  69  */
  70 #define BA0_HISR                0x0000  /* Host Interrupt Status Register */
  71 #define BA0_HISR_INTENA         (1<<31) /* Internal Interrupt Enable Bit */
  72 #define BA0_HISR_MIDI           (1<<22) /* MIDI port interrupt */
  73 #define BA0_HISR_FIFOI          (1<<20) /* FIFO polled interrupt */
  74 #define BA0_HISR_DMAI           (1<<18) /* DMA interrupt (half or end) */
  75 #define BA0_HISR_FIFO(c)        (1<<(12+(c))) /* FIFO channel interrupt */
  76 #define BA0_HISR_DMA(c)         (1<<(8+(c)))  /* DMA channel interrupt */
  77 #define BA0_HISR_GPPI           (1<<5)  /* General Purpose Input (Primary chip) */
  78 #define BA0_HISR_GPSI           (1<<4)  /* General Purpose Input (Secondary chip) */
  79 #define BA0_HISR_GP3I           (1<<3)  /* GPIO3 pin Interrupt */
  80 #define BA0_HISR_GP1I           (1<<2)  /* GPIO1 pin Interrupt */
  81 #define BA0_HISR_VUPI           (1<<1)  /* VOLUP pin Interrupt */
  82 #define BA0_HISR_VDNI           (1<<0)  /* VOLDN pin Interrupt */
  83
  84 #define BA0_HICR                0x0008  /* Host Interrupt Control Register */
  85 #define BA0_HICR_CHGM           (1<<1)  /* INTENA Change Mask */
  86 #define BA0_HICR_IEV            (1<<0)  /* INTENA Value */
  87 #define BA0_HICR_EOI            (3<<0)  /* End of Interrupt command */
  88
  89 #define BA0_HIMR                0x000c  /* Host Interrupt Mask Register */
  90                                         /* Use same contants as for BA0_HISR */
  91
  92 #define BA0_IIER                0x0010  /* ISA Interrupt Enable Register */
  93
  94 #define BA0_HDSR0               0x00f0  /* Host DMA Engine 0 Status Register */
  95 #define BA0_HDSR1               0x00f4  /* Host DMA Engine 1 Status Register */
  96 #define BA0_HDSR2               0x00f8  /* Host DMA Engine 2 Status Register */
  97 #define BA0_HDSR3               0x00fc  /* Host DMA Engine 3 Status Register */
  98
  99 #define BA0_HDSR_CH1P           (1<<25) /* Channel 1 Pending */
 100 #define BA0_HDSR_CH2P           (1<<24) /* Channel 2 Pending */
 101 #define BA0_HDSR_DHTC           (1<<17) /* DMA Half Terminal Count */
 102 #define BA0_HDSR_DTC            (1<<16) /* DMA Terminal Count */
 103 #define BA0_HDSR_DRUN           (1<<15) /* DMA Running */
 104 #define BA0_HDSR_RQ             (1<<7)  /* Pending Request */
 105
 106 #define BA0_DCA0                0x0110  /* Host DMA Engine 0 Current Address */
 107 #define BA0_DCC0                0x0114  /* Host DMA Engine 0 Current Count */
 108 #define BA0_DBA0                0x0118  /* Host DMA Engine 0 Base Address */
 109 #define BA0_DBC0                0x011c  /* Host DMA Engine 0 Base Count */
 110 #define BA0_DCA1                0x0120  /* Host DMA Engine 1 Current Address */
 111 #define BA0_DCC1                0x0124  /* Host DMA Engine 1 Current Count */
 112 #define BA0_DBA1                0x0128  /* Host DMA Engine 1 Base Address */
 113 #define BA0_DBC1                0x012c  /* Host DMA Engine 1 Base Count */
 114 #define BA0_DCA2                0x0130  /* Host DMA Engine 2 Current Address */
 115 #define BA0_DCC2                0x0134  /* Host DMA Engine 2 Current Count */
 116 #define BA0_DBA2                0x0138  /* Host DMA Engine 2 Base Address */
 117 #define BA0_DBC2                0x013c  /* Host DMA Engine 2 Base Count */
 118 #define BA0_DCA3                0x0140  /* Host DMA Engine 3 Current Address */
 119 #define BA0_DCC3                0x0144  /* Host DMA Engine 3 Current Count */
 120 #define BA0_DBA3                0x0148  /* Host DMA Engine 3 Base Address */
 121 #define BA0_DBC3                0x014c  /* Host DMA Engine 3 Base Count */
 122 #define BA0_DMR0                0x0150  /* Host DMA Engine 0 Mode */
 123 #define BA0_DCR0                0x0154  /* Host DMA Engine 0 Command */
 124 #define BA0_DMR1                0x0158  /* Host DMA Engine 1 Mode */
 125 #define BA0_DCR1                0x015c  /* Host DMA Engine 1 Command */
 126 #define BA0_DMR2                0x0160  /* Host DMA Engine 2 Mode */
 127 #define BA0_DCR2                0x0164  /* Host DMA Engine 2 Command */
 128 #define BA0_DMR3                0x0168  /* Host DMA Engine 3 Mode */
 129 #define BA0_DCR3                0x016c  /* Host DMA Engine 3 Command */
 130
 131 #define BA0_DMR_DMA             (1<<29) /* Enable DMA mode */
 132 #define BA0_DMR_POLL            (1<<28) /* Enable poll mode */
 133 #define BA0_DMR_TBC             (1<<25) /* Transfer By Channel */
 134 #define BA0_DMR_CBC             (1<<24) /* Count By Channel (0 = frame resolution) */
 135 #define BA0_DMR_SWAPC           (1<<22) /* Swap Left/Right Channels */
 136 #define BA0_DMR_SIZE20          (1<<20) /* Sample is 20-bit */
 137 #define BA0_DMR_USIGN           (1<<19) /* Unsigned */
 138 #define BA0_DMR_BEND            (1<<18) /* Big Endian */
 139 #define BA0_DMR_MONO            (1<<17) /* Mono */
 140 #define BA0_DMR_SIZE8           (1<<16) /* Sample is 8-bit */
 141 #define BA0_DMR_TYPE_DEMAND     (0<<6)
 142 #define BA0_DMR_TYPE_SINGLE     (1<<6)
 143 #define BA0_DMR_TYPE_BLOCK      (2<<6)
 144 #define BA0_DMR_TYPE_CASCADE    (3<<6)  /* Not supported */
 145 #define BA0_DMR_DEC             (1<<5)  /* Access Increment (0) or Decrement (1) */
 146 #define BA0_DMR_AUTO            (1<<4)  /* Auto-Initialize */
 147 #define BA0_DMR_TR_VERIFY       (0<<2)  /* Verify Transfer */
 148 #define BA0_DMR_TR_WRITE        (1<<2)  /* Write Transfer */
 149 #define BA0_DMR_TR_READ         (2<<2)  /* Read Transfer */
 150
 151 #define BA0_DCR_HTCIE           (1<<17) /* Half Terminal Count Interrupt */
 152 #define BA0_DCR_TCIE            (1<<16) /* Terminal Count Interrupt */
 153 #define BA0_DCR_MSK             (1<<0)  /* DMA Mask bit */
 154
 155 #define BA0_FCR0                0x0180  /* FIFO Control 0 */
 156 #define BA0_FCR1                0x0184  /* FIFO Control 1 */
 157 #define BA0_FCR2                0x0188  /* FIFO Control 2 */
 158 #define BA0_FCR3                0x018c  /* FIFO Control 3 */
 159
 160 #define BA0_FCR_FEN             (1<<31) /* FIFO Enable bit */
 161 #define BA0_FCR_DACZ            (1<<30) /* DAC Zero */
 162 #define BA0_FCR_PSH             (1<<29) /* Previous Sample Hold */
 163 #define BA0_FCR_RS(x)           (((x)&0x1f)<<24) /* Right Slot Mapping */
 164 #define BA0_FCR_LS(x)           (((x)&0x1f)<<16) /* Left Slot Mapping */
 165 #define BA0_FCR_SZ(x)           (((x)&0x7f)<<8) /* FIFO buffer size (in samples) */
 166 #define BA0_FCR_OF(x)           (((x)&0x7f)<<0) /* FIFO starting offset (in samples) */
 167
 168 #define BA0_FPDR0               0x0190  /* FIFO Polled Data 0 */
 169 #define BA0_FPDR1               0x0194  /* FIFO Polled Data 1 */
 170 #define BA0_FPDR2               0x0198  /* FIFO Polled Data 2 */
 171 #define BA0_FPDR3               0x019c  /* FIFO Polled Data 3 */
 172
 173 #define BA0_FCHS                0x020c  /* FIFO Channel Status */
 174 #define BA0_FCHS_RCO(x)         (1<<(7+(((x)&3)<<3))) /* Right Channel Out */
 175 #define BA0_FCHS_LCO(x)         (1<<(6+(((x)&3)<<3))) /* Left Channel Out */
 176 #define BA0_FCHS_MRP(x)         (1<<(5+(((x)&3)<<3))) /* Move Read Pointer */
 177 #define BA0_FCHS_FE(x)          (1<<(4+(((x)&3)<<3))) /* FIFO Empty */
 178 #define BA0_FCHS_FF(x)          (1<<(3+(((x)&3)<<3))) /* FIFO Full */
 179 #define BA0_FCHS_IOR(x)         (1<<(2+(((x)&3)<<3))) /* Internal Overrun Flag */
 180 #define BA0_FCHS_RCI(x)         (1<<(1+(((x)&3)<<3))) /* Right Channel In */
 181 #define BA0_FCHS_LCI(x)         (1<<(0+(((x)&3)<<3))) /* Left Channel In */
 182
 183 #define BA0_FSIC0               0x0210  /* FIFO Status and Interrupt Control 0 */
 184 #define BA0_FSIC1               0x0214  /* FIFO Status and Interrupt Control 1 */
 185 #define BA0_FSIC2               0x0218  /* FIFO Status and Interrupt Control 2 */
 186 #define BA0_FSIC3               0x021c  /* FIFO Status and Interrupt Control 3 */
 187
 188 #define BA0_FSIC_FIC(x)         (((x)&0x7f)<<24) /* FIFO Interrupt Count */
 189 #define BA0_FSIC_FORIE          (1<<23) /* FIFO OverRun Interrupt Enable */
 190 #define BA0_FSIC_FURIE          (1<<22) /* FIFO UnderRun Interrupt Enable */
 191 #define BA0_FSIC_FSCIE          (1<<16) /* FIFO Sample Count Interrupt Enable */
 192 #define BA0_FSIC_FSC(x)         (((x)&0x7f)<<8) /* FIFO Sample Count */
 193 #define BA0_FSIC_FOR            (1<<7)  /* FIFO OverRun */
 194 #define BA0_FSIC_FUR            (1<<6)  /* FIFO UnderRun */
 195 #define BA0_FSIC_FSCR           (1<<0)  /* FIFO Sample Count Reached */
 196
 197 #define BA0_PMCS                0x0344  /* Power Management Control/Status */
 198 #define BA0_CWPR                0x03e0  /* Configuration Write Protect */
 199
 200 #define BA0_EPPMC               0x03e4  /* Extended PCI Power Management Control */
 201 #define BA0_EPPMC_FPDN          (1<<14) /* Full Power DowN */
 202
 203 #define BA0_GPIOR               0x03e8  /* GPIO Pin Interface Register */
 204
 205 #define BA0_SPMC                0x03ec  /* Serial Port Power Management Control (& ASDIN2 enable) */
 206 #define BA0_SPMC_GIPPEN         (1<<15) /* GP INT Primary PME# Enable */
 207 #define BA0_SPMC_GISPEN         (1<<14) /* GP INT Secondary PME# Enable */
 208 #define BA0_SPMC_EESPD          (1<<9)  /* EEPROM Serial Port Disable */
 209 #define BA0_SPMC_ASDI2E         (1<<8)  /* ASDIN2 Enable */
 210 #define BA0_SPMC_ASDO           (1<<7)  /* Asynchronous ASDOUT Assertion */
 211 #define BA0_SPMC_WUP2           (1<<3)  /* Wakeup for Secondary Input */
 212 #define BA0_SPMC_WUP1           (1<<2)  /* Wakeup for Primary Input */
 213 #define BA0_SPMC_ASYNC          (1<<1)  /* Asynchronous ASYNC Assertion */
 214 #define BA0_SPMC_RSTN           (1<<0)  /* Reset Not! */
 215
 216 #define BA0_CFLR                0x03f0  /* Configuration Load Register (EEPROM or BIOS) */
 217 #define BA0_CFLR_DEFAULT        0x00000001 /* CFLR must be in AC97 link mode */
 218 #define BA0_IISR                0x03f4  /* ISA Interrupt Select */
 219 #define BA0_TMS                 0x03f8  /* Test Register */
 220 #define BA0_SSVID               0x03fc  /* Subsystem ID register */
 221
 222 #define BA0_CLKCR1              0x0400  /* Clock Control Register 1 */
 223 #define BA0_CLKCR1_CLKON        (1<<25) /* Read Only */
 224 #define BA0_CLKCR1_DLLRDY       (1<<24) /* DLL Ready */
 225 #define BA0_CLKCR1_DLLOS        (1<<6)  /* DLL Output Select */
 226 #define BA0_CLKCR1_SWCE         (1<<5)  /* Clock Enable */
 227 #define BA0_CLKCR1_DLLP         (1<<4)  /* DLL PowerUp */
 228 #define BA0_CLKCR1_DLLSS        (((x)&3)<<3) /* DLL Source Select */
 229
 230 #define BA0_FRR                 0x0410  /* Feature Reporting Register */
 231 #define BA0_SLT12O              0x041c  /* Slot 12 GPIO Output Register for AC-Link */
 232
 233 #define BA0_SERMC               0x0420  /* Serial Port Master Control */
 234 #define BA0_SERMC_FCRN          (1<<27) /* Force Codec Ready Not */
 235 #define BA0_SERMC_ODSEN2        (1<<25) /* On-Demand Support Enable ASDIN2 */
 236 #define BA0_SERMC_ODSEN1        (1<<24) /* On-Demand Support Enable ASDIN1 */
 237 #define BA0_SERMC_SXLB          (1<<21) /* ASDIN2 to ASDOUT Loopback */
 238 #define BA0_SERMC_SLB           (1<<20) /* ASDOUT to ASDIN2 Loopback */
 239 #define BA0_SERMC_LOVF          (1<<19) /* Loopback Output Valid Frame bit */
 240 #define BA0_SERMC_TCID(x)       (((x)&3)<<16) /* Target Secondary Codec ID */
 241 #define BA0_SERMC_PXLB          (5<<1)  /* Primary Port External Loopback */
 242 #define BA0_SERMC_PLB           (4<<1)  /* Primary Port Internal Loopback */
 243 #define BA0_SERMC_PTC           (7<<1)  /* Port Timing Configuration */
 244 #define BA0_SERMC_PTC_AC97      (1<<1)  /* AC97 mode */
 245 #define BA0_SERMC_MSPE          (1<<0)  /* Master Serial Port Enable */
 246
 247 #define BA0_SERC1               0x0428  /* Serial Port Configuration 1 */
 248 #define BA0_SERC1_SO1F(x)       (((x)&7)>>1) /* Primary Output Port Format */
 249 #define BA0_SERC1_AC97          (1<<1)
 250 #define BA0_SERC1_SO1EN         (1<<0)  /* Primary Output Port Enable */
 251
 252 #define BA0_SERC2               0x042c  /* Serial Port Configuration 2 */
 253 #define BA0_SERC2_SI1F(x)       (((x)&7)>>1) /* Primary Input Port Format */
 254 #define BA0_SERC2_AC97          (1<<1)
 255 #define BA0_SERC2_SI1EN         (1<<0)  /* Primary Input Port Enable */
 256
 257 #define BA0_SLT12M              0x045c  /* Slot 12 Monitor Register for Primary AC-Link */
 258
 259 #define BA0_ACCTL               0x0460  /* AC'97 Control */
 260 #define BA0_ACCTL_TC            (1<<6)  /* Target Codec */
 261 #define BA0_ACCTL_CRW           (1<<4)  /* 0=Write, 1=Read Command */
 262 #define BA0_ACCTL_DCV           (1<<3)  /* Dynamic Command Valid */
 263 #define BA0_ACCTL_VFRM          (1<<2)  /* Valid Frame */
 264 #define BA0_ACCTL_ESYN          (1<<1)  /* Enable Sync */
 265
 266 #define BA0_ACSTS               0x0464  /* AC'97 Status */
 267 #define BA0_ACSTS_VSTS          (1<<1)  /* Valid Status */
 268 #define BA0_ACSTS_CRDY          (1<<0)  /* Codec Ready */
 269
 270 #define BA0_ACOSV               0x0468  /* AC'97 Output Slot Valid */
 271 #define BA0_ACOSV_SLV(x)        (1<<((x)-3))
 272
 273 #define BA0_ACCAD               0x046c  /* AC'97 Command Address */
 274 #define BA0_ACCDA               0x0470  /* AC'97 Command Data */
 275
 276 #define BA0_ACISV               0x0474  /* AC'97 Input Slot Valid */
 277 #define BA0_ACISV_SLV(x)        (1<<((x)-3))
 278
 279 #define BA0_ACSAD               0x0478  /* AC'97 Status Address */
 280 #define BA0_ACSDA               0x047c  /* AC'97 Status Data */
 281 #define BA0_JSPT                0x0480  /* Joystick poll/trigger */
 282 #define BA0_JSCTL               0x0484  /* Joystick control */
 283 #define BA0_JSC1                0x0488  /* Joystick control */
 284 #define BA0_JSC2                0x048c  /* Joystick control */
 285 #define BA0_JSIO                0x04a0
 286
 287 #define BA0_MIDCR               0x0490  /* MIDI Control */
 288 #define BA0_MIDCR_MRST          (1<<5)  /* Reset MIDI Interface */
 289 #define BA0_MIDCR_MLB           (1<<4)  /* MIDI Loop Back Enable */
 290 #define BA0_MIDCR_TIE           (1<<3)  /* MIDI Transmuit Interrupt Enable */
 291 #define BA0_MIDCR_RIE           (1<<2)  /* MIDI Receive Interrupt Enable */
 292 #define BA0_MIDCR_RXE           (1<<1)  /* MIDI Receive Enable */
 293 #define BA0_MIDCR_TXE           (1<<0)  /* MIDI Transmit Enable */
 294
 295 #define BA0_MIDCMD              0x0494  /* MIDI Command (wo) */
 296
 297 #define BA0_MIDSR               0x0494  /* MIDI Status (ro) */
 298 #define BA0_MIDSR_RDA           (1<<15) /* Sticky bit (RBE 1->0) */
 299 #define BA0_MIDSR_TBE           (1<<14) /* Sticky bit (TBF 0->1) */
 300 #define BA0_MIDSR_RBE           (1<<7)  /* Receive Buffer Empty */
 301 #define BA0_MIDSR_TBF           (1<<6)  /* Transmit Buffer Full */
 302
 303 #define BA0_MIDWP               0x0498  /* MIDI Write */
 304 #define BA0_MIDRP               0x049c  /* MIDI Read (ro) */
 305
 306 #define BA0_AODSD1              0x04a8  /* AC'97 On-Demand Slot Disable for primary link (ro) */
 307 #define BA0_AODSD1_NDS(x)       (1<<((x)-3))
 308
 309 #define BA0_AODSD2              0x04ac  /* AC'97 On-Demand Slot Disable for secondary link (ro) */
 310 #define BA0_AODSD2_NDS(x)       (1<<((x)-3))
 311
 312 #define BA0_CFGI                0x04b0  /* Configure Interface (EEPROM interface) */
 313 #define BA0_SLT12M2             0x04dc  /* Slot 12 Monitor Register 2 for secondary AC-link */
 314 #define BA0_ACSTS2              0x04e4  /* AC'97 Status Register 2 */
 315 #define BA0_ACISV2              0x04f4  /* AC'97 Input Slot Valid Register 2 */
 316 #define BA0_ACSAD2              0x04f8  /* AC'97 Status Address Register 2 */
 317 #define BA0_ACSDA2              0x04fc  /* AC'97 Status Data Register 2 */
 318 #define BA0_FMSR                0x0730  /* FM Synthesis Status (ro) */
 319 #define BA0_B0AP                0x0730  /* FM Bank 0 Address Port (wo) */
 320 #define BA0_FMDP                0x0734  /* FM Data Port */
 321 #define BA0_B1AP                0x0738  /* FM Bank 1 Address Port */
 322 #define BA0_B1DP                0x073c  /* FM Bank 1 Data Port */
 323
 324 #define BA0_SSPM                0x0740  /* Sound System Power Management */
 325 #define BA0_SSPM_MIXEN          (1<<6)  /* Playback SRC + FM/Wavetable MIX */
 326 #define BA0_SSPM_CSRCEN         (1<<5)  /* Capture Sample Rate Converter Enable */
 327 #define BA0_SSPM_PSRCEN         (1<<4)  /* Playback Sample Rate Converter Enable */
 328 #define BA0_SSPM_JSEN           (1<<3)  /* Joystick Enable */
 329 #define BA0_SSPM_ACLEN          (1<<2)  /* Serial Port Engine and AC-Link Enable */
 330 #define BA0_SSPM_FMEN           (1<<1)  /* FM Synthesis Block Enable */
 331
 332 #define BA0_DACSR               0x0744  /* DAC Sample Rate - Playback SRC */
 333 #define BA0_ADCSR               0x0748  /* ADC Sample Rate - Capture SRC */
 334
 335 #define BA0_SSCR                0x074c  /* Sound System Control Register */
 336 #define BA0_SSCR_HVS1           (1<<23) /* Hardwave Volume Step (0=1,1=2) */
 337 #define BA0_SSCR_MVCS           (1<<19) /* Master Volume Codec Select */
 338 #define BA0_SSCR_MVLD           (1<<18) /* Master Volume Line Out Disable */
 339 #define BA0_SSCR_MVAD           (1<<17) /* Master Volume Alternate Out Disable */
 340 #define BA0_SSCR_MVMD           (1<<16) /* Master Volume Mono Out Disable */
 341 #define BA0_SSCR_XLPSRC         (1<<8)  /* External SRC Loopback Mode */
 342 #define BA0_SSCR_LPSRC          (1<<7)  /* SRC Loopback Mode */
 343 #define BA0_SSCR_CDTX           (1<<5)  /* CD Transfer Data */
 344 #define BA0_SSCR_HVC            (1<<3)  /* Harware Volume Control Enable */
 345
 346 #define BA0_FMLVC               0x0754  /* FM Synthesis Left Volume Control */
 347 #define BA0_FMRVC               0x0758  /* FM Synthesis Right Volume Control */
 348 #define BA0_SRCSA               0x075c  /* SRC Slot Assignments */
 349 #define BA0_PPLVC               0x0760  /* PCM Playback Left Volume Control */
 350 #define BA0_PPRVC               0x0764  /* PCM Playback Right Volume Control */
 351 #define BA0_PASR                0x0768  /* playback sample rate */
 352 #define BA0_CASR                0x076C  /* capture sample rate */
 353
 354 /* Source Slot Numbers - Playback */
 355 #define SRCSLOT_LEFT_PCM_PLAYBACK               0
 356 #define SRCSLOT_RIGHT_PCM_PLAYBACK              1
 357 #define SRCSLOT_PHONE_LINE_1_DAC                2
 358 #define SRCSLOT_CENTER_PCM_PLAYBACK             3
 359 #define SRCSLOT_LEFT_SURROUND_PCM_PLAYBACK      4
 360 #define SRCSLOT_RIGHT_SURROUND_PCM_PLAYBACK     5
 361 #define SRCSLOT_LFE_PCM_PLAYBACK                6
 362 #define SRCSLOT_PHONE_LINE_2_DAC                7
 363 #define SRCSLOT_HEADSET_DAC                     8
 364 #define SRCSLOT_LEFT_WT                         29  /* invalid for BA0_SRCSA */
 365 #define SRCSLOT_RIGHT_WT                        30  /* invalid for BA0_SRCSA */
 366
 367 /* Source Slot Numbers - Capture */
 368 #define SRCSLOT_LEFT_PCM_RECORD                 10
 369 #define SRCSLOT_RIGHT_PCM_RECORD                11
 370 #define SRCSLOT_PHONE_LINE_1_ADC                12
 371 #define SRCSLOT_MIC_ADC                         13
 372 #define SRCSLOT_PHONE_LINE_2_ADC                17
 373 #define SRCSLOT_HEADSET_ADC                     18
 374 #define SRCSLOT_SECONDARY_LEFT_PCM_RECORD       20
 375 #define SRCSLOT_SECONDARY_RIGHT_PCM_RECORD      21
 376 #define SRCSLOT_SECONDARY_PHONE_LINE_1_ADC      22
 377 #define SRCSLOT_SECONDARY_MIC_ADC               23
 378 #define SRCSLOT_SECONDARY_PHONE_LINE_2_ADC      27
 379 #define SRCSLOT_SECONDARY_HEADSET_ADC           28
 380
 381 /* Source Slot Numbers - Others */
 382 #define SRCSLOT_POWER_DOWN                      31
 383
 384 /* MIDI modes */
 385 #define CS4281_MODE_OUTPUT              (1<<0)
 386 #define CS4281_MODE_INPUT               (1<<1)
 387
 388 /* joystick bits */
 389 /* Bits for JSPT */
 390 #define JSPT_CAX                                0x00000001
 391 #define JSPT_CAY                                0x00000002
 392 #define JSPT_CBX                                0x00000004
 393 #define JSPT_CBY                                0x00000008
 394 #define JSPT_BA1                                0x00000010
 395 #define JSPT_BA2                                0x00000020
 396 #define JSPT_BB1                                0x00000040
 397 #define JSPT_BB2                                0x00000080
 398
 399 /* Bits for JSCTL */
 400 #define JSCTL_SP_MASK                           0x00000003
 401 #define JSCTL_SP_SLOW                           0x00000000
 402 #define JSCTL_SP_MEDIUM_SLOW                    0x00000001
 403 #define JSCTL_SP_MEDIUM_FAST                    0x00000002
 404 #define JSCTL_SP_FAST                           0x00000003
 405 #define JSCTL_ARE                               0x00000004
 406
 407 /* Data register pairs masks */
 408 #define JSC1_Y1V_MASK                           0x0000FFFF
 409 #define JSC1_X1V_MASK                           0xFFFF0000
 410 #define JSC1_Y1V_SHIFT                          0
 411 #define JSC1_X1V_SHIFT                          16
 412 #define JSC2_Y2V_MASK                           0x0000FFFF
 413 #define JSC2_X2V_MASK                           0xFFFF0000
 414 #define JSC2_Y2V_SHIFT                          0
 415 #define JSC2_X2V_SHIFT                          16
 416
 417 /* JS GPIO */
 418 #define JSIO_DAX                                0x00000001
 419 #define JSIO_DAY                                0x00000002
 420 #define JSIO_DBX                                0x00000004
 421 #define JSIO_DBY                                0x00000008
 422 #define JSIO_AXOE                               0x00000010
 423 #define JSIO_AYOE                               0x00000020
 424 #define JSIO_BXOE                               0x00000040
 425 #define JSIO_BYOE                               0x00000080
 426
 427 /*
 428  *
 429  */
 430
 431 struct cs4281_dma {
 432         struct snd_pcm_substream *substream;
 433         unsigned int regDBA;            /* offset to DBA register */
 434         unsigned int regDCA;            /* offset to DCA register */
 435         unsigned int regDBC;            /* offset to DBC register */
 436         unsigned int regDCC;            /* offset to DCC register */
 437         unsigned int regDMR;            /* offset to DMR register */
 438         unsigned int regDCR;            /* offset to DCR register */
 439         unsigned int regHDSR;           /* offset to HDSR register */
 440         unsigned int regFCR;            /* offset to FCR register */
 441         unsigned int regFSIC;           /* offset to FSIC register */
 442         unsigned int valDMR;            /* DMA mode */
 443         unsigned int valDCR;            /* DMA command */
 444         unsigned int valFCR;            /* FIFO control */
 445         unsigned int fifo_offset;       /* FIFO offset within BA1 */
 446         unsigned char left_slot;        /* FIFO left slot */
 447         unsigned char right_slot;       /* FIFO right slot */
 448         int frag;                       /* period number */
 449 };
 450
 451 #define SUSPEND_REGISTERS       20
 452
 453 struct cs4281 {
 454         int irq;
 455
 456         void __iomem *ba0;              /* virtual (accessible) address */
 457         void __iomem *ba1;              /* virtual (accessible) address */
 458         unsigned long ba0_addr;
 459         unsigned long ba1_addr;
 460
 461         int dual_codec;
 462
 463         struct snd_ac97_bus *ac97_bus;
 464         struct snd_ac97 *ac97;
 465         struct snd_ac97 *ac97_secondary;
 466
 467         struct pci_dev *pci;
 468         struct snd_card *card;
 469         struct snd_pcm *pcm;
 470         struct snd_rawmidi *rmidi;
 471         struct snd_rawmidi_substream *midi_input;
 472         struct snd_rawmidi_substream *midi_output;
 473
 474         struct cs4281_dma dma[4];
 475
 476         unsigned char src_left_play_slot;
 477         unsigned char src_right_play_slot;
 478         unsigned char src_left_rec_slot;
 479         unsigned char src_right_rec_slot;
 480
 481         unsigned int spurious_dhtc_irq;
 482         unsigned int spurious_dtc_irq;
 483
 484         spinlock_t reg_lock;
 485         unsigned int midcr;
 486         unsigned int uartm;
 487
 488         struct gameport *gameport;
 489
 490 #ifdef CONFIG_PM
 491         u32 suspend_regs[SUSPEND_REGISTERS];
 492 #endif
 493
 494 };
 495
 496 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id);
 497
 498 static struct pci_device_id snd_cs4281_ids[] = {
 499         { 0x1013, 0x6005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* CS4281 */
 500         { 0, }
 501 };
 502
 503 MODULE_DEVICE_TABLE(pci, snd_cs4281_ids);
 504
 505 /*
 506  *  constants
 507  */
 508
 509 #define CS4281_FIFO_SIZE        32
 510
 511 /*
 512  *  common I/O routines
 513  */
 514
 515 static inline void snd_cs4281_pokeBA0(struct cs4281 *chip, unsigned long offset,
 516                                       unsigned int val)
 517 {
 518         writel(val, chip->ba0 + offset);
 519 }
 520
 521 static inline unsigned int snd_cs4281_peekBA0(struct cs4281 *chip, unsigned long offset)
 522 {
 523         return readl(chip->ba0 + offset);
 524 }
 525
 526 static void snd_cs4281_ac97_write(struct snd_ac97 *ac97,
 527                                   unsigned short reg, unsigned short val)
 528 {
 529         /*
 530          *  1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
 531          *  2. Write ACCDA = Command Data Register = 470h    for data to write to AC97
 532          *  3. Write ACCTL = Control Register = 460h for initiating the write
 533          *  4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
 534          *  5. if DCV not cleared, break and return error
 535          */
 536         struct cs4281 *chip = ac97->private_data;
 537         int count;
 538
 539         /*
 540          *  Setup the AC97 control registers on the CS461x to send the
 541          *  appropriate command to the AC97 to perform the read.
 542          *  ACCAD = Command Address Register = 46Ch
 543          *  ACCDA = Command Data Register = 470h
 544          *  ACCTL = Control Register = 460h
 545          *  set DCV - will clear when process completed
 546          *  reset CRW - Write command
 547          *  set VFRM - valid frame enabled
 548          *  set ESYN - ASYNC generation enabled
 549          *  set RSTN - ARST# inactive, AC97 codec not reset
 550          */
 551         snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
 552         snd_cs4281_pokeBA0(chip, BA0_ACCDA, val);
 553         snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_VFRM |
 554                                             BA0_ACCTL_ESYN | (ac97->num ? BA0_ACCTL_TC : 0));
 555         for (count = 0; count < 2000; count++) {
 556                 /*
 557                  *  First, we want to wait for a short time.
 558                  */
 559                 udelay(10);
 560                 /*
 561                  *  Now, check to see if the write has completed.
 562                  *  ACCTL = 460h, DCV should be reset by now and 460h = 07h
 563                  */
 564                 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV)) {
 565                         return;
 566                 }
 567         }
 568         snd_printk(KERN_ERR "AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val);
 569 }
 570
 571 static unsigned short snd_cs4281_ac97_read(struct snd_ac97 *ac97,
 572                                            unsigned short reg)
 573 {
 574         struct cs4281 *chip = ac97->private_data;
 575         int count;
 576         unsigned short result;
 577         // FIXME: volatile is necessary in the following due to a bug of
 578         // some gcc versions
 579         volatile int ac97_num = ((volatile struct snd_ac97 *)ac97)->num;
 580
 581         /*
 582          *  1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
 583          *  2. Write ACCDA = Command Data Register = 470h    for data to write to AC97
 584          *  3. Write ACCTL = Control Register = 460h for initiating the write
 585          *  4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
 586          *  5. if DCV not cleared, break and return error
 587          *  6. Read ACSTS = Status Register = 464h, check VSTS bit
 588          */
 589
 590         snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
 591
 592         /*
 593          *  Setup the AC97 control registers on the CS461x to send the
 594          *  appropriate command to the AC97 to perform the read.
 595          *  ACCAD = Command Address Register = 46Ch
 596          *  ACCDA = Command Data Register = 470h
 597          *  ACCTL = Control Register = 460h
 598          *  set DCV - will clear when process completed
 599          *  set CRW - Read command
 600          *  set VFRM - valid frame enabled
 601          *  set ESYN - ASYNC generation enabled
 602          *  set RSTN - ARST# inactive, AC97 codec not reset
 603          */
 604
 605         snd_cs4281_pokeBA0(chip, BA0_ACCAD, reg);
 606         snd_cs4281_pokeBA0(chip, BA0_ACCDA, 0);
 607         snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_DCV | BA0_ACCTL_CRW |
 608                                             BA0_ACCTL_VFRM | BA0_ACCTL_ESYN |
 609                            (ac97_num ? BA0_ACCTL_TC : 0));
 610
 611
 612         /*
 613          *  Wait for the read to occur.
 614          */
 615         for (count = 0; count < 500; count++) {
 616                 /*
 617                  *  First, we want to wait for a short time.
 618                  */
 619                 udelay(10);
 620                 /*
 621                  *  Now, check to see if the read has completed.
 622                  *  ACCTL = 460h, DCV should be reset by now and 460h = 17h
 623                  */
 624                 if (!(snd_cs4281_peekBA0(chip, BA0_ACCTL) & BA0_ACCTL_DCV))
 625                         goto __ok1;
 626         }
 627
 628         snd_printk(KERN_ERR "AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg);
 629         result = 0xffff;
 630         goto __end;
 631
 632       __ok1:
 633         /*
 634          *  Wait for the valid status bit to go active.
 635          */
 636         for (count = 0; count < 100; count++) {
 637                 /*
 638                  *  Read the AC97 status register.
 639                  *  ACSTS = Status Register = 464h
 640                  *  VSTS - Valid Status
 641                  */
 642                 if (snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSTS2 : BA0_ACSTS) & BA0_ACSTS_VSTS)
 643                         goto __ok2;
 644                 udelay(10);
 645         }
 646
 647         snd_printk(KERN_ERR "AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg);
 648         result = 0xffff;
 649         goto __end;
 650
 651       __ok2:
 652         /*
 653          *  Read the data returned from the AC97 register.
 654          *  ACSDA = Status Data Register = 474h
 655          */
 656         result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
 657
 658       __end:
 659         return result;
 660 }
 661
 662 /*
 663  *  PCM part
 664  */
 665
 666 static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd)
 667 {
 668         struct cs4281_dma *dma = substream->runtime->private_data;
 669         struct cs4281 *chip = snd_pcm_substream_chip(substream);
 670
 671         spin_lock(&chip->reg_lock);
 672         switch (cmd) {
 673         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 674                 dma->valDCR |= BA0_DCR_MSK;
 675                 dma->valFCR |= BA0_FCR_FEN;
 676                 break;
 677         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 678                 dma->valDCR &= ~BA0_DCR_MSK;
 679                 dma->valFCR &= ~BA0_FCR_FEN;
 680                 break;
 681         case SNDRV_PCM_TRIGGER_START:
 682         case SNDRV_PCM_TRIGGER_RESUME:
 683                 snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR & ~BA0_DMR_DMA);
 684                 dma->valDMR |= BA0_DMR_DMA;
 685                 dma->valDCR &= ~BA0_DCR_MSK;
 686                 dma->valFCR |= BA0_FCR_FEN;
 687                 break;
 688         case SNDRV_PCM_TRIGGER_STOP:
 689         case SNDRV_PCM_TRIGGER_SUSPEND:
 690                 dma->valDMR &= ~(BA0_DMR_DMA|BA0_DMR_POLL);
 691                 dma->valDCR |= BA0_DCR_MSK;
 692                 dma->valFCR &= ~BA0_FCR_FEN;
 693                 /* Leave wave playback FIFO enabled for FM */
 694                 if (dma->regFCR != BA0_FCR0)
 695                         dma->valFCR &= ~BA0_FCR_FEN;
 696                 break;
 697         default:
 698                 spin_unlock(&chip->reg_lock);
 699                 return -EINVAL;
 700         }
 701         snd_cs4281_pokeBA0(chip, dma->regDMR, dma->valDMR);
 702         snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR);
 703         snd_cs4281_pokeBA0(chip, dma->regDCR, dma->valDCR);
 704         spin_unlock(&chip->reg_lock);
 705         return 0;
 706 }
 707
 708 static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
 709 {
 710         unsigned int val = ~0;
 711
 712         if (real_rate)
 713                 *real_rate = rate;
 714         /* special "hardcoded" rates */
 715         switch (rate) {
 716         case 8000:      return 5;
 717         case 11025:     return 4;
 718         case 16000:     return 3;
 719         case 22050:     return 2;
 720         case 44100:     return 1;
 721         case 48000:     return 0;
 722         default:
 723                 goto __variable;
 724         }
 725       __variable:
 726         val = 1536000 / rate;
 727         if (real_rate)
 728                 *real_rate = 1536000 / val;
 729         return val;
 730 }
 731
 732 static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma,
 733                             struct snd_pcm_runtime *runtime,
 734                             int capture, int src)
 735 {
 736         int rec_mono;
 737
 738         dma->valDMR = BA0_DMR_TYPE_SINGLE | BA0_DMR_AUTO |
 739                       (capture ? BA0_DMR_TR_WRITE : BA0_DMR_TR_READ);
 740         if (runtime->channels == 1)
 741                 dma->valDMR |= BA0_DMR_MONO;
 742         if (snd_pcm_format_unsigned(runtime->format) > 0)
 743                 dma->valDMR |= BA0_DMR_USIGN;
 744         if (snd_pcm_format_big_endian(runtime->format) > 0)
 745                 dma->valDMR |= BA0_DMR_BEND;
 746         switch (snd_pcm_format_width(runtime->format)) {
 747         case 8: dma->valDMR |= BA0_DMR_SIZE8;
 748                 if (runtime->channels == 1)
 749                         dma->valDMR |= BA0_DMR_SWAPC;
 750                 break;
 751         case 32: dma->valDMR |= BA0_DMR_SIZE20; break;
 752         }
 753         dma->frag = 0;  /* for workaround */
 754         dma->valDCR = BA0_DCR_TCIE | BA0_DCR_MSK;
 755         if (runtime->buffer_size != runtime->period_size)
 756                 dma->valDCR |= BA0_DCR_HTCIE;
 757         /* Initialize DMA */
 758         snd_cs4281_pokeBA0(chip, dma->regDBA, runtime->dma_addr);
 759         snd_cs4281_pokeBA0(chip, dma->regDBC, runtime->buffer_size - 1);
 760         rec_mono = (chip->dma[1].valDMR & BA0_DMR_MONO) == BA0_DMR_MONO;
 761         snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
 762                                             (chip->src_right_play_slot << 8) |
 763                                             (chip->src_left_rec_slot << 16) |
 764                                             ((rec_mono ? 31 : chip->src_right_rec_slot) << 24));
 765         if (!src)
 766                 goto __skip_src;
 767         if (!capture) {
 768                 if (dma->left_slot == chip->src_left_play_slot) {
 769                         unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
 770                         snd_assert(dma->right_slot == chip->src_right_play_slot, );
 771                         snd_cs4281_pokeBA0(chip, BA0_DACSR, val);
 772                 }
 773         } else {
 774                 if (dma->left_slot == chip->src_left_rec_slot) {
 775                         unsigned int val = snd_cs4281_rate(runtime->rate, NULL);
 776                         snd_assert(dma->right_slot == chip->src_right_rec_slot, );
 777                         snd_cs4281_pokeBA0(chip, BA0_ADCSR, val);
 778                 }
 779         }
 780       __skip_src:
 781         /* Deactivate wave playback FIFO before changing slot assignments */
 782         if (dma->regFCR == BA0_FCR0)
 783                 snd_cs4281_pokeBA0(chip, dma->regFCR, snd_cs4281_peekBA0(chip, dma->regFCR) & ~BA0_FCR_FEN);
 784         /* Initialize FIFO */
 785         dma->valFCR = BA0_FCR_LS(dma->left_slot) |
 786                       BA0_FCR_RS(capture && (dma->valDMR & BA0_DMR_MONO) ? 31 : dma->right_slot) |
 787                       BA0_FCR_SZ(CS4281_FIFO_SIZE) |
 788                       BA0_FCR_OF(dma->fifo_offset);
 789         snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | (capture ? BA0_FCR_PSH : 0));
 790         /* Activate FIFO again for FM playback */
 791         if (dma->regFCR == BA0_FCR0)
 792                 snd_cs4281_pokeBA0(chip, dma->regFCR, dma->valFCR | BA0_FCR_FEN);
 793         /* Clear FIFO Status and Interrupt Control Register */
 794         snd_cs4281_pokeBA0(chip, dma->regFSIC, 0);
 795 }
 796
 797 static int snd_cs4281_hw_params(struct snd_pcm_substream *substream,
 798                                 struct snd_pcm_hw_params *hw_params)
 799 {
 800         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 801 }
 802
 803 static int snd_cs4281_hw_free(struct snd_pcm_substream *substream)
 804 {
 805         return snd_pcm_lib_free_pages(substream);
 806 }
 807
 808 static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream)
 809 {
 810         struct snd_pcm_runtime *runtime = substream->runtime;
 811         struct cs4281_dma *dma = runtime->private_data;
 812         struct cs4281 *chip = snd_pcm_substream_chip(substream);
 813
 814         spin_lock_irq(&chip->reg_lock);
 815         snd_cs4281_mode(chip, dma, runtime, 0, 1);
 816         spin_unlock_irq(&chip->reg_lock);
 817         return 0;
 818 }
 819
 820 static int snd_cs4281_capture_prepare(struct snd_pcm_substream *substream)
 821 {
 822         struct snd_pcm_runtime *runtime = substream->runtime;
 823         struct cs4281_dma *dma = runtime->private_data;
 824         struct cs4281 *chip = snd_pcm_substream_chip(substream);
 825
 826         spin_lock_irq(&chip->reg_lock);
 827         snd_cs4281_mode(chip, dma, runtime, 1, 1);
 828         spin_unlock_irq(&chip->reg_lock);
 829         return 0;
 830 }
 831
 832 static snd_pcm_uframes_t snd_cs4281_pointer(struct snd_pcm_substream *substream)
 833 {
 834         struct snd_pcm_runtime *runtime = substream->runtime;
 835         struct cs4281_dma *dma = runtime->private_data;
 836         struct cs4281 *chip = snd_pcm_substream_chip(substream);
 837
 838         // printk("DCC = 0x%x, buffer_size = 0x%x, jiffies = %li\n", snd_cs4281_peekBA0(chip, dma->regDCC), runtime->buffer_size, jiffies);
 839         return runtime->buffer_size -
 840                snd_cs4281_peekBA0(chip, dma->regDCC) - 1;
 841 }
 842
 843 static struct snd_pcm_hardware snd_cs4281_playback =
 844 {
 845         .info =                 SNDRV_PCM_INFO_MMAP |
 846                                 SNDRV_PCM_INFO_INTERLEAVED |
 847                                 SNDRV_PCM_INFO_MMAP_VALID |
 848                                 SNDRV_PCM_INFO_PAUSE |
 849                                 SNDRV_PCM_INFO_RESUME,
 850         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 851                                 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
 852                                 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
 853                                 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
 854                                 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
 855         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 856         .rate_min =             4000,
 857         .rate_max =             48000,
 858         .channels_min =         1,
 859         .channels_max =         2,
 860         .buffer_bytes_max =     (512*1024),
 861         .period_bytes_min =     64,
 862         .period_bytes_max =     (512*1024),
 863         .periods_min =          1,
 864         .periods_max =          2,
 865         .fifo_size =            CS4281_FIFO_SIZE,
 866 };
 867
 868 static struct snd_pcm_hardware snd_cs4281_capture =
 869 {
 870         .info =                 SNDRV_PCM_INFO_MMAP |
 871                                 SNDRV_PCM_INFO_INTERLEAVED |
 872                                 SNDRV_PCM_INFO_MMAP_VALID |
 873                                 SNDRV_PCM_INFO_PAUSE |
 874                                 SNDRV_PCM_INFO_RESUME,
 875         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 876                                 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE |
 877                                 SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE |
 878                                 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE |
 879                                 SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE,
 880         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 881         .rate_min =             4000,
 882         .rate_max =             48000,
 883         .channels_min =         1,
 884         .channels_max =         2,
 885         .buffer_bytes_max =     (512*1024),
 886         .period_bytes_min =     64,
 887         .period_bytes_max =     (512*1024),
 888         .periods_min =          1,
 889         .periods_max =          2,
 890         .fifo_size =            CS4281_FIFO_SIZE,
 891 };
 892
 893 static int snd_cs4281_playback_open(struct snd_pcm_substream *substream)
 894 {
 895         struct cs4281 *chip = snd_pcm_substream_chip(substream);
 896         struct snd_pcm_runtime *runtime = substream->runtime;
 897         struct cs4281_dma *dma;
 898
 899         dma = &chip->dma[0];
 900         dma->substream = substream;
 901         dma->left_slot = 0;
 902         dma->right_slot = 1;
 903         runtime->private_data = dma;
 904         runtime->hw = snd_cs4281_playback;
 905         /* should be detected from the AC'97 layer, but it seems
 906            that although CS4297A rev B reports 18-bit ADC resolution,
 907            samples are 20-bit */
 908         snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
 909         return 0;
 910 }
 911
 912 static int snd_cs4281_capture_open(struct snd_pcm_substream *substream)
 913 {
 914         struct cs4281 *chip = snd_pcm_substream_chip(substream);
 915         struct snd_pcm_runtime *runtime = substream->runtime;
 916         struct cs4281_dma *dma;
 917
 918         dma = &chip->dma[1];
 919         dma->substream = substream;
 920         dma->left_slot = 10;
 921         dma->right_slot = 11;
 922         runtime->private_data = dma;
 923         runtime->hw = snd_cs4281_capture;
 924         /* should be detected from the AC'97 layer, but it seems
 925            that although CS4297A rev B reports 18-bit ADC resolution,
 926            samples are 20-bit */
 927         snd_pcm_hw_constraint_msbits(runtime, 0, 32, 20);
 928         return 0;
 929 }
 930
 931 static int snd_cs4281_playback_close(struct snd_pcm_substream *substream)
 932 {
 933         struct cs4281_dma *dma = substream->runtime->private_data;
 934
 935         dma->substream = NULL;
 936         return 0;
 937 }
 938
 939 static int snd_cs4281_capture_close(struct snd_pcm_substream *substream)
 940 {
 941         struct cs4281_dma *dma = substream->runtime->private_data;
 942
 943         dma->substream = NULL;
 944         return 0;
 945 }
 946
 947 static struct snd_pcm_ops snd_cs4281_playback_ops = {
 948         .open =         snd_cs4281_playback_open,
 949         .close =        snd_cs4281_playback_close,
 950         .ioctl =        snd_pcm_lib_ioctl,
 951         .hw_params =    snd_cs4281_hw_params,
 952         .hw_free =      snd_cs4281_hw_free,
 953         .prepare =      snd_cs4281_playback_prepare,
 954         .trigger =      snd_cs4281_trigger,
 955         .pointer =      snd_cs4281_pointer,
 956 };
 957
 958 static struct snd_pcm_ops snd_cs4281_capture_ops = {
 959         .open =         snd_cs4281_capture_open,
 960         .close =        snd_cs4281_capture_close,
 961         .ioctl =        snd_pcm_lib_ioctl,
 962         .hw_params =    snd_cs4281_hw_params,
 963         .hw_free =      snd_cs4281_hw_free,
 964         .prepare =      snd_cs4281_capture_prepare,
 965         .trigger =      snd_cs4281_trigger,
 966         .pointer =      snd_cs4281_pointer,
 967 };
 968
 969 static int __devinit snd_cs4281_pcm(struct cs4281 * chip, int device,
 970                                     struct snd_pcm ** rpcm)
 971 {
 972         struct snd_pcm *pcm;
 973         int err;
 974
 975         if (rpcm)
 976                 *rpcm = NULL;
 977         err = snd_pcm_new(chip->card, "CS4281", device, 1, 1, &pcm);
 978         if (err < 0)
 979                 return err;
 980
 981         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4281_playback_ops);
 982         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4281_capture_ops);
 983
 984         pcm->private_data = chip;
 985         pcm->info_flags = 0;
 986         strcpy(pcm->name, "CS4281");
 987         chip->pcm = pcm;
 988
 989         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 990                                               snd_dma_pci_data(chip->pci), 64*1024, 512*1024);
 991
 992         if (rpcm)
 993                 *rpcm = pcm;
 994         return 0;
 995 }
 996
 997 /*
 998  *  Mixer section
 999  */
1000
1001 #define CS_VOL_MASK     0x1f
1002
1003 static int snd_cs4281_info_volume(struct snd_kcontrol *kcontrol,
1004                                   struct snd_ctl_elem_info *uinfo)
1005 {
1006         uinfo->type              = SNDRV_CTL_ELEM_TYPE_INTEGER;
1007         uinfo->count             = 2;
1008         uinfo->value.integer.min = 0;
1009         uinfo->value.integer.max = CS_VOL_MASK;
1010         return 0;
1011 }
1012
1013 static int snd_cs4281_get_volume(struct snd_kcontrol *kcontrol,
1014                                  struct snd_ctl_elem_value *ucontrol)
1015 {
1016         struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
1017         int regL = (kcontrol->private_value >> 16) & 0xffff;
1018         int regR = kcontrol->private_value & 0xffff;
1019         int volL, volR;
1020
1021         volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1022         volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1023
1024         ucontrol->value.integer.value[0] = volL;
1025         ucontrol->value.integer.value[1] = volR;
1026         return 0;
1027 }
1028
1029 static int snd_cs4281_put_volume(struct snd_kcontrol *kcontrol,
1030                                  struct snd_ctl_elem_value *ucontrol)
1031 {
1032         struct cs4281 *chip = snd_kcontrol_chip(kcontrol);
1033         int change = 0;
1034         int regL = (kcontrol->private_value >> 16) & 0xffff;
1035         int regR = kcontrol->private_value & 0xffff;
1036         int volL, volR;
1037
1038         volL = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regL) & CS_VOL_MASK);
1039         volR = CS_VOL_MASK - (snd_cs4281_peekBA0(chip, regR) & CS_VOL_MASK);
1040
1041         if (ucontrol->value.integer.value[0] != volL) {
1042                 volL = CS_VOL_MASK - (ucontrol->value.integer.value[0] & CS_VOL_MASK);
1043                 snd_cs4281_pokeBA0(chip, regL, volL);
1044                 change = 1;
1045         }
1046         if (ucontrol->value.integer.value[1] != volR) {
1047                 volR = CS_VOL_MASK - (ucontrol->value.integer.value[1] & CS_VOL_MASK);
1048                 snd_cs4281_pokeBA0(chip, regR, volR);
1049                 change = 1;
1050         }
1051         return change;
1052 }
1053
1054 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -4650, 150, 0);
1055
1056 static struct snd_kcontrol_new snd_cs4281_fm_vol =
1057 {
1058         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1059         .name = "Synth Playback Volume",
1060         .info = snd_cs4281_info_volume,
1061         .get = snd_cs4281_get_volume,
1062         .put = snd_cs4281_put_volume,
1063         .private_value = ((BA0_FMLVC << 16) | BA0_FMRVC),
1064         .tlv = { .p = db_scale_dsp },
1065 };
1066
1067 static struct snd_kcontrol_new snd_cs4281_pcm_vol =
1068 {
1069         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1070         .name = "PCM Stream Playback Volume",
1071         .info = snd_cs4281_info_volume,
1072         .get = snd_cs4281_get_volume,
1073         .put = snd_cs4281_put_volume,
1074         .private_value = ((BA0_PPLVC << 16) | BA0_PPRVC),
1075         .tlv = { .p = db_scale_dsp },
1076 };
1077
1078 static void snd_cs4281_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1079 {
1080         struct cs4281 *chip = bus->private_data;
1081         chip->ac97_bus = NULL;
1082 }
1083
1084 static void snd_cs4281_mixer_free_ac97(struct snd_ac97 *ac97)
1085 {
1086         struct cs4281 *chip = ac97->private_data;
1087         if (ac97->num)
1088                 chip->ac97_secondary = NULL;
1089         else
1090                 chip->ac97 = NULL;
1091 }
1092
1093 static int __devinit snd_cs4281_mixer(struct cs4281 * chip)
1094 {
1095         struct snd_card *card = chip->card;
1096         struct snd_ac97_template ac97;
1097         int err;
1098         static struct snd_ac97_bus_ops ops = {
1099                 .write = snd_cs4281_ac97_write,
1100                 .read = snd_cs4281_ac97_read,
1101         };
1102
1103         if ((err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1104                 return err;
1105         chip->ac97_bus->private_free = snd_cs4281_mixer_free_ac97_bus;
1106
1107         memset(&ac97, 0, sizeof(ac97));
1108         ac97.private_data = chip;
1109         ac97.private_free = snd_cs4281_mixer_free_ac97;
1110         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1111                 return err;
1112         if (chip->dual_codec) {
1113                 ac97.num = 1;
1114                 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_secondary)) < 0)
1115                         return err;
1116         }
1117         if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_fm_vol, chip))) < 0)
1118                 return err;
1119         if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4281_pcm_vol, chip))) < 0)
1120                 return err;
1121         return 0;
1122 }
1123
1124
1125 /*
1126  * proc interface
1127  */
1128
1129 static void snd_cs4281_proc_read(struct snd_info_entry *entry,
1130                                   struct snd_info_buffer *buffer)
1131 {
1132         struct cs4281 *chip = entry->private_data;
1133
1134         snd_iprintf(buffer, "Cirrus Logic CS4281\n\n");
1135         snd_iprintf(buffer, "Spurious half IRQs   : %u\n", chip->spurious_dhtc_irq);
1136         snd_iprintf(buffer, "Spurious end IRQs    : %u\n", chip->spurious_dtc_irq);
1137 }
1138
1139 static long snd_cs4281_BA0_read(struct snd_info_entry *entry,
1140                                 void *file_private_data,
1141                                 struct file *file, char __user *buf,
1142                                 unsigned long count, unsigned long pos)
1143 {
1144         long size;
1145         struct cs4281 *chip = entry->private_data;
1146
1147         size = count;
1148         if (pos + size > CS4281_BA0_SIZE)
1149                 size = (long)CS4281_BA0_SIZE - pos;
1150         if (size > 0) {
1151                 if (copy_to_user_fromio(buf, chip->ba0 + pos, size))
1152                         return -EFAULT;
1153         }
1154         return size;
1155 }
1156
1157 static long snd_cs4281_BA1_read(struct snd_info_entry *entry,
1158                                 void *file_private_data,
1159                                 struct file *file, char __user *buf,
1160                                 unsigned long count, unsigned long pos)
1161 {
1162         long size;
1163         struct cs4281 *chip = entry->private_data;
1164
1165         size = count;
1166         if (pos + size > CS4281_BA1_SIZE)
1167                 size = (long)CS4281_BA1_SIZE - pos;
1168         if (size > 0) {
1169                 if (copy_to_user_fromio(buf, chip->ba1 + pos, size))
1170                         return -EFAULT;
1171         }
1172         return size;
1173 }
1174
1175 static struct snd_info_entry_ops snd_cs4281_proc_ops_BA0 = {
1176         .read = snd_cs4281_BA0_read,
1177 };
1178
1179 static struct snd_info_entry_ops snd_cs4281_proc_ops_BA1 = {
1180         .read = snd_cs4281_BA1_read,
1181 };
1182
1183 static void __devinit snd_cs4281_proc_init(struct cs4281 * chip)
1184 {
1185         struct snd_info_entry *entry;
1186
1187         if (! snd_card_proc_new(chip->card, "cs4281", &entry))
1188                 snd_info_set_text_ops(entry, chip, snd_cs4281_proc_read);
1189         if (! snd_card_proc_new(chip->card, "cs4281_BA0", &entry)) {
1190                 entry->content = SNDRV_INFO_CONTENT_DATA;
1191                 entry->private_data = chip;
1192                 entry->c.ops = &snd_cs4281_proc_ops_BA0;
1193                 entry->size = CS4281_BA0_SIZE;
1194         }
1195         if (! snd_card_proc_new(chip->card, "cs4281_BA1", &entry)) {
1196                 entry->content = SNDRV_INFO_CONTENT_DATA;
1197                 entry->private_data = chip;
1198                 entry->c.ops = &snd_cs4281_proc_ops_BA1;
1199                 entry->size = CS4281_BA1_SIZE;
1200         }
1201 }
1202
1203 /*
1204  * joystick support
1205  */
1206
1207 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
1208
1209 static void snd_cs4281_gameport_trigger(struct gameport *gameport)
1210 {
1211         struct cs4281 *chip = gameport_get_port_data(gameport);
1212
1213         snd_assert(chip, return);
1214         snd_cs4281_pokeBA0(chip, BA0_JSPT, 0xff);
1215 }
1216
1217 static unsigned char snd_cs4281_gameport_read(struct gameport *gameport)
1218 {
1219         struct cs4281 *chip = gameport_get_port_data(gameport);
1220
1221         snd_assert(chip, return 0);
1222         return snd_cs4281_peekBA0(chip, BA0_JSPT);
1223 }
1224
1225 #ifdef COOKED_MODE
1226 static int snd_cs4281_gameport_cooked_read(struct gameport *gameport,
1227                                            int *axes, int *buttons)
1228 {
1229         struct cs4281 *chip = gameport_get_port_data(gameport);
1230         unsigned js1, js2, jst;
1231
1232         snd_assert(chip, return 0);
1233
1234         js1 = snd_cs4281_peekBA0(chip, BA0_JSC1);
1235         js2 = snd_cs4281_peekBA0(chip, BA0_JSC2);
1236         jst = snd_cs4281_peekBA0(chip, BA0_JSPT);
1237
1238         *buttons = (~jst >> 4) & 0x0F;
1239
1240         axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF;
1241         axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF;
1242         axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF;
1243         axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF;
1244
1245         for (jst = 0; jst < 4; ++jst)
1246                 if (axes[jst] == 0xFFFF) axes[jst] = -1;
1247         return 0;
1248 }
1249 #else
1250 #define snd_cs4281_gameport_cooked_read NULL
1251 #endif
1252
1253 static int snd_cs4281_gameport_open(struct gameport *gameport, int mode)
1254 {
1255         switch (mode) {
1256 #ifdef COOKED_MODE
1257         case GAMEPORT_MODE_COOKED:
1258                 return 0;
1259 #endif
1260         case GAMEPORT_MODE_RAW:
1261                 return 0;
1262         default:
1263                 return -1;
1264         }
1265         return 0;
1266 }
1267
1268 static int __devinit snd_cs4281_create_gameport(struct cs4281 *chip)
1269 {
1270         struct gameport *gp;
1271
1272         chip->gameport = gp = gameport_allocate_port();
1273         if (!gp) {
1274                 printk(KERN_ERR "cs4281: cannot allocate memory for gameport\n");
1275                 return -ENOMEM;
1276         }
1277
1278         gameport_set_name(gp, "CS4281 Gameport");
1279         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1280         gameport_set_dev_parent(gp, &chip->pci->dev);
1281         gp->open = snd_cs4281_gameport_open;
1282         gp->read = snd_cs4281_gameport_read;
1283         gp->trigger = snd_cs4281_gameport_trigger;
1284         gp->cooked_read = snd_cs4281_gameport_cooked_read;
1285         gameport_set_port_data(gp, chip);
1286
1287         snd_cs4281_pokeBA0(chip, BA0_JSIO, 0xFF); // ?
1288         snd_cs4281_pokeBA0(chip, BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW);
1289
1290         gameport_register_port(gp);
1291
1292         return 0;
1293 }
1294
1295 static void snd_cs4281_free_gameport(struct cs4281 *chip)
1296 {
1297         if (chip->gameport) {
1298                 gameport_unregister_port(chip->gameport);
1299                 chip->gameport = NULL;
1300         }
1301 }
1302 #else
1303 static inline int snd_cs4281_create_gameport(struct cs4281 *chip) { return -ENOSYS; }
1304 static inline void snd_cs4281_free_gameport(struct cs4281 *chip) { }
1305 #endif /* CONFIG_GAMEPORT || (MODULE && CONFIG_GAMEPORT_MODULE) */
1306
1307 static int snd_cs4281_free(struct cs4281 *chip)
1308 {
1309         snd_cs4281_free_gameport(chip);
1310
1311         if (chip->irq >= 0)
1312                 synchronize_irq(chip->irq);
1313
1314         /* Mask interrupts */
1315         snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff);
1316         /* Stop the DLL Clock logic. */
1317         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1318         /* Sound System Power Management - Turn Everything OFF */
1319         snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
1320         /* PCI interface - D3 state */
1321         pci_set_power_state(chip->pci, 3);
1322
1323         if (chip->irq >= 0)
1324                 free_irq(chip->irq, chip);
1325         if (chip->ba0)
1326                 iounmap(chip->ba0);
1327         if (chip->ba1)
1328                 iounmap(chip->ba1);
1329         pci_release_regions(chip->pci);
1330         pci_disable_device(chip->pci);
1331
1332         kfree(chip);
1333         return 0;
1334 }
1335
1336 static int snd_cs4281_dev_free(struct snd_device *device)
1337 {
1338         struct cs4281 *chip = device->device_data;
1339         return snd_cs4281_free(chip);
1340 }
1341
1342 static int snd_cs4281_chip_init(struct cs4281 *chip); /* defined below */
1343
1344 static int __devinit snd_cs4281_create(struct snd_card *card,
1345                                        struct pci_dev *pci,
1346                                        struct cs4281 ** rchip,
1347                                        int dual_codec)
1348 {
1349         struct cs4281 *chip;
1350         unsigned int tmp;
1351         int err;
1352         static struct snd_device_ops ops = {
1353                 .dev_free =     snd_cs4281_dev_free,
1354         };
1355
1356         *rchip = NULL;
1357         if ((err = pci_enable_device(pci)) < 0)
1358                 return err;
1359         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1360         if (chip == NULL) {
1361                 pci_disable_device(pci);
1362                 return -ENOMEM;
1363         }
1364         spin_lock_init(&chip->reg_lock);
1365         chip->card = card;
1366         chip->pci = pci;
1367         chip->irq = -1;
1368         pci_set_master(pci);
1369         if (dual_codec < 0 || dual_codec > 3) {
1370                 snd_printk(KERN_ERR "invalid dual_codec option %d\n", dual_codec);
1371                 dual_codec = 0;
1372         }
1373         chip->dual_codec = dual_codec;
1374
1375         if ((err = pci_request_regions(pci, "CS4281")) < 0) {
1376                 kfree(chip);
1377                 pci_disable_device(pci);
1378                 return err;
1379         }
1380         chip->ba0_addr = pci_resource_start(pci, 0);
1381         chip->ba1_addr = pci_resource_start(pci, 1);
1382
1383         chip->ba0 = ioremap_nocache(chip->ba0_addr, pci_resource_len(pci, 0));
1384         chip->ba1 = ioremap_nocache(chip->ba1_addr, pci_resource_len(pci, 1));
1385         if (!chip->ba0 || !chip->ba1) {
1386                 snd_cs4281_free(chip);
1387                 return -ENOMEM;
1388         }
1389
1390         if (request_irq(pci->irq, snd_cs4281_interrupt, IRQF_SHARED,
1391                         "CS4281", chip)) {
1392                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1393                 snd_cs4281_free(chip);
1394                 return -ENOMEM;
1395         }
1396         chip->irq = pci->irq;
1397
1398         tmp = snd_cs4281_chip_init(chip);
1399         if (tmp) {
1400                 snd_cs4281_free(chip);
1401                 return tmp;
1402         }
1403
1404         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1405                 snd_cs4281_free(chip);
1406                 return err;
1407         }
1408
1409         snd_cs4281_proc_init(chip);
1410
1411         snd_card_set_dev(card, &pci->dev);
1412
1413         *rchip = chip;
1414         return 0;
1415 }
1416
1417 static int snd_cs4281_chip_init(struct cs4281 *chip)
1418 {
1419         unsigned int tmp;
1420         unsigned long end_time;
1421         int retry_count = 2;
1422
1423         /* Having EPPMC.FPDN=1 prevent proper chip initialisation */
1424         tmp = snd_cs4281_peekBA0(chip, BA0_EPPMC);
1425         if (tmp & BA0_EPPMC_FPDN)
1426                 snd_cs4281_pokeBA0(chip, BA0_EPPMC, tmp & ~BA0_EPPMC_FPDN);
1427
1428       __retry:
1429         tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1430         if (tmp != BA0_CFLR_DEFAULT) {
1431                 snd_cs4281_pokeBA0(chip, BA0_CFLR, BA0_CFLR_DEFAULT);
1432                 tmp = snd_cs4281_peekBA0(chip, BA0_CFLR);
1433                 if (tmp != BA0_CFLR_DEFAULT) {
1434                         snd_printk(KERN_ERR "CFLR setup failed (0x%x)\n", tmp);
1435                         return -EIO;
1436                 }
1437         }
1438
1439         /* Set the 'Configuration Write Protect' register
1440          * to 4281h.  Allows vendor-defined configuration
1441          * space between 0e4h and 0ffh to be written. */
1442         snd_cs4281_pokeBA0(chip, BA0_CWPR, 0x4281);
1443
1444         if ((tmp = snd_cs4281_peekBA0(chip, BA0_SERC1)) != (BA0_SERC1_SO1EN | BA0_SERC1_AC97)) {
1445                 snd_printk(KERN_ERR "SERC1 AC'97 check failed (0x%x)\n", tmp);
1446                 return -EIO;
1447         }
1448         if ((tmp = snd_cs4281_peekBA0(chip, BA0_SERC2)) != (BA0_SERC2_SI1EN | BA0_SERC2_AC97)) {
1449                 snd_printk(KERN_ERR "SERC2 AC'97 check failed (0x%x)\n", tmp);
1450                 return -EIO;
1451         }
1452
1453         /* Sound System Power Management */
1454         snd_cs4281_pokeBA0(chip, BA0_SSPM, BA0_SSPM_MIXEN | BA0_SSPM_CSRCEN |
1455                                            BA0_SSPM_PSRCEN | BA0_SSPM_JSEN |
1456                                            BA0_SSPM_ACLEN | BA0_SSPM_FMEN);
1457
1458         /* Serial Port Power Management */
1459         /* Blast the clock control register to zero so that the
1460          * PLL starts out in a known state, and blast the master serial
1461          * port control register to zero so that the serial ports also
1462          * start out in a known state. */
1463         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
1464         snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
1465
1466         /* Make ESYN go to zero to turn off
1467          * the Sync pulse on the AC97 link. */
1468         snd_cs4281_pokeBA0(chip, BA0_ACCTL, 0);
1469         udelay(50);
1470
1471         /*  Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
1472          *  spec) and then drive it high.  This is done for non AC97 modes since
1473          *  there might be logic external to the CS4281 that uses the ARST# line
1474          *  for a reset. */
1475         snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
1476         udelay(50);
1477         snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN);
1478         msleep(50);
1479
1480         if (chip->dual_codec)
1481                 snd_cs4281_pokeBA0(chip, BA0_SPMC, BA0_SPMC_RSTN | BA0_SPMC_ASDI2E);
1482
1483         /*
1484          *  Set the serial port timing configuration.
1485          */
1486         snd_cs4281_pokeBA0(chip, BA0_SERMC,
1487                            (chip->dual_codec ? BA0_SERMC_TCID(chip->dual_codec) : BA0_SERMC_TCID(1)) |
1488                            BA0_SERMC_PTC_AC97 | BA0_SERMC_MSPE);
1489
1490         /*
1491          *  Start the DLL Clock logic.
1492          */
1493         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_DLLP);
1494         msleep(50);
1495         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, BA0_CLKCR1_SWCE | BA0_CLKCR1_DLLP);
1496
1497         /*
1498          * Wait for the DLL ready signal from the clock logic.
1499          */
1500         end_time = jiffies + HZ;
1501         do {
1502                 /*
1503                  *  Read the AC97 status register to see if we've seen a CODEC
1504                  *  signal from the AC97 codec.
1505                  */
1506                 if (snd_cs4281_peekBA0(chip, BA0_CLKCR1) & BA0_CLKCR1_DLLRDY)
1507                         goto __ok0;
1508                 schedule_timeout_uninterruptible(1);
1509         } while (time_after_eq(end_time, jiffies));
1510
1511         snd_printk(KERN_ERR "DLLRDY not seen\n");
1512         return -EIO;
1513
1514       __ok0:
1515
1516         /*
1517          *  The first thing we do here is to enable sync generation.  As soon
1518          *  as we start receiving bit clock, we'll start producing the SYNC
1519          *  signal.
1520          */
1521         snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_ESYN);
1522
1523         /*
1524          * Wait for the codec ready signal from the AC97 codec.
1525          */
1526         end_time = jiffies + HZ;
1527         do {
1528                 /*
1529                  *  Read the AC97 status register to see if we've seen a CODEC
1530                  *  signal from the AC97 codec.
1531                  */
1532                 if (snd_cs4281_peekBA0(chip, BA0_ACSTS) & BA0_ACSTS_CRDY)
1533                         goto __ok1;
1534                 schedule_timeout_uninterruptible(1);
1535         } while (time_after_eq(end_time, jiffies));
1536
1537         snd_printk(KERN_ERR "never read codec ready from AC'97 (0x%x)\n", snd_cs4281_peekBA0(chip, BA0_ACSTS));
1538         return -EIO;
1539
1540       __ok1:
1541         if (chip->dual_codec) {
1542                 end_time = jiffies + HZ;
1543                 do {
1544                         if (snd_cs4281_peekBA0(chip, BA0_ACSTS2) & BA0_ACSTS_CRDY)
1545                                 goto __codec2_ok;
1546                         schedule_timeout_uninterruptible(1);
1547                 } while (time_after_eq(end_time, jiffies));
1548                 snd_printk(KERN_INFO "secondary codec doesn't respond. disable it...\n");
1549                 chip->dual_codec = 0;
1550         __codec2_ok: ;
1551         }
1552
1553         /*
1554          *  Assert the valid frame signal so that we can start sending commands
1555          *  to the AC97 codec.
1556          */
1557
1558         snd_cs4281_pokeBA0(chip, BA0_ACCTL, BA0_ACCTL_VFRM | BA0_ACCTL_ESYN);
1559
1560         /*
1561          *  Wait until we've sampled input slots 3 and 4 as valid, meaning that
1562          *  the codec is pumping ADC data across the AC-link.
1563          */
1564
1565         end_time = jiffies + HZ;
1566         do {
1567                 /*
1568                  *  Read the input slot valid register and see if input slots 3
1569                  *  4 are valid yet.
1570                  */
1571                 if ((snd_cs4281_peekBA0(chip, BA0_ACISV) & (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4))) == (BA0_ACISV_SLV(3) | BA0_ACISV_SLV(4)))
1572                         goto __ok2;
1573                 schedule_timeout_uninterruptible(1);
1574         } while (time_after_eq(end_time, jiffies));
1575
1576         if (--retry_count > 0)
1577                 goto __retry;
1578         snd_printk(KERN_ERR "never read ISV3 and ISV4 from AC'97\n");
1579         return -EIO;
1580
1581       __ok2:
1582
1583         /*
1584          *  Now, assert valid frame and the slot 3 and 4 valid bits.  This will
1585          *  commense the transfer of digital audio data to the AC97 codec.
1586          */
1587         snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4));
1588
1589         /*
1590          *  Initialize DMA structures
1591          */
1592         for (tmp = 0; tmp < 4; tmp++) {
1593                 struct cs4281_dma *dma = &chip->dma[tmp];
1594                 dma->regDBA = BA0_DBA0 + (tmp * 0x10);
1595                 dma->regDCA = BA0_DCA0 + (tmp * 0x10);
1596                 dma->regDBC = BA0_DBC0 + (tmp * 0x10);
1597                 dma->regDCC = BA0_DCC0 + (tmp * 0x10);
1598                 dma->regDMR = BA0_DMR0 + (tmp * 8);
1599                 dma->regDCR = BA0_DCR0 + (tmp * 8);
1600                 dma->regHDSR = BA0_HDSR0 + (tmp * 4);
1601                 dma->regFCR = BA0_FCR0 + (tmp * 4);
1602                 dma->regFSIC = BA0_FSIC0 + (tmp * 4);
1603                 dma->fifo_offset = tmp * CS4281_FIFO_SIZE;
1604                 snd_cs4281_pokeBA0(chip, dma->regFCR,
1605                                    BA0_FCR_LS(31) |
1606                                    BA0_FCR_RS(31) |
1607                                    BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1608                                    BA0_FCR_OF(dma->fifo_offset));
1609         }
1610
1611         chip->src_left_play_slot = 0;   /* AC'97 left PCM playback (3) */
1612         chip->src_right_play_slot = 1;  /* AC'97 right PCM playback (4) */
1613         chip->src_left_rec_slot = 10;   /* AC'97 left PCM record (3) */
1614         chip->src_right_rec_slot = 11;  /* AC'97 right PCM record (4) */
1615
1616         /* Activate wave playback FIFO for FM playback */
1617         chip->dma[0].valFCR = BA0_FCR_FEN | BA0_FCR_LS(0) |
1618                               BA0_FCR_RS(1) |
1619                               BA0_FCR_SZ(CS4281_FIFO_SIZE) |
1620                               BA0_FCR_OF(chip->dma[0].fifo_offset);
1621         snd_cs4281_pokeBA0(chip, chip->dma[0].regFCR, chip->dma[0].valFCR);
1622         snd_cs4281_pokeBA0(chip, BA0_SRCSA, (chip->src_left_play_slot << 0) |
1623                                             (chip->src_right_play_slot << 8) |
1624                                             (chip->src_left_rec_slot << 16) |
1625                                             (chip->src_right_rec_slot << 24));
1626
1627         /* Initialize digital volume */
1628         snd_cs4281_pokeBA0(chip, BA0_PPLVC, 0);
1629         snd_cs4281_pokeBA0(chip, BA0_PPRVC, 0);
1630
1631         /* Enable IRQs */
1632         snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1633         /* Unmask interrupts */
1634         snd_cs4281_pokeBA0(chip, BA0_HIMR, 0x7fffffff & ~(
1635                                         BA0_HISR_MIDI |
1636                                         BA0_HISR_DMAI |
1637                                         BA0_HISR_DMA(0) |
1638                                         BA0_HISR_DMA(1) |
1639                                         BA0_HISR_DMA(2) |
1640                                         BA0_HISR_DMA(3)));
1641         synchronize_irq(chip->irq);
1642
1643         return 0;
1644 }
1645
1646 /*
1647  *  MIDI section
1648  */
1649
1650 static void snd_cs4281_midi_reset(struct cs4281 *chip)
1651 {
1652         snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr | BA0_MIDCR_MRST);
1653         udelay(100);
1654         snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1655 }
1656
1657 static int snd_cs4281_midi_input_open(struct snd_rawmidi_substream *substream)
1658 {
1659         struct cs4281 *chip = substream->rmidi->private_data;
1660
1661         spin_lock_irq(&chip->reg_lock);
1662         chip->midcr |= BA0_MIDCR_RXE;
1663         chip->midi_input = substream;
1664         if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1665                 snd_cs4281_midi_reset(chip);
1666         } else {
1667                 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1668         }
1669         spin_unlock_irq(&chip->reg_lock);
1670         return 0;
1671 }
1672
1673 static int snd_cs4281_midi_input_close(struct snd_rawmidi_substream *substream)
1674 {
1675         struct cs4281 *chip = substream->rmidi->private_data;
1676
1677         spin_lock_irq(&chip->reg_lock);
1678         chip->midcr &= ~(BA0_MIDCR_RXE | BA0_MIDCR_RIE);
1679         chip->midi_input = NULL;
1680         if (!(chip->uartm & CS4281_MODE_OUTPUT)) {
1681                 snd_cs4281_midi_reset(chip);
1682         } else {
1683                 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1684         }
1685         chip->uartm &= ~CS4281_MODE_INPUT;
1686         spin_unlock_irq(&chip->reg_lock);
1687         return 0;
1688 }
1689
1690 static int snd_cs4281_midi_output_open(struct snd_rawmidi_substream *substream)
1691 {
1692         struct cs4281 *chip = substream->rmidi->private_data;
1693
1694         spin_lock_irq(&chip->reg_lock);
1695         chip->uartm |= CS4281_MODE_OUTPUT;
1696         chip->midcr |= BA0_MIDCR_TXE;
1697         chip->midi_output = substream;
1698         if (!(chip->uartm & CS4281_MODE_INPUT)) {
1699                 snd_cs4281_midi_reset(chip);
1700         } else {
1701                 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1702         }
1703         spin_unlock_irq(&chip->reg_lock);
1704         return 0;
1705 }
1706
1707 static int snd_cs4281_midi_output_close(struct snd_rawmidi_substream *substream)
1708 {
1709         struct cs4281 *chip = substream->rmidi->private_data;
1710
1711         spin_lock_irq(&chip->reg_lock);
1712         chip->midcr &= ~(BA0_MIDCR_TXE | BA0_MIDCR_TIE);
1713         chip->midi_output = NULL;
1714         if (!(chip->uartm & CS4281_MODE_INPUT)) {
1715                 snd_cs4281_midi_reset(chip);
1716         } else {
1717                 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1718         }
1719         chip->uartm &= ~CS4281_MODE_OUTPUT;
1720         spin_unlock_irq(&chip->reg_lock);
1721         return 0;
1722 }
1723
1724 static void snd_cs4281_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1725 {
1726         unsigned long flags;
1727         struct cs4281 *chip = substream->rmidi->private_data;
1728
1729         spin_lock_irqsave(&chip->reg_lock, flags);
1730         if (up) {
1731                 if ((chip->midcr & BA0_MIDCR_RIE) == 0) {
1732                         chip->midcr |= BA0_MIDCR_RIE;
1733                         snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1734                 }
1735         } else {
1736                 if (chip->midcr & BA0_MIDCR_RIE) {
1737                         chip->midcr &= ~BA0_MIDCR_RIE;
1738                         snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1739                 }
1740         }
1741         spin_unlock_irqrestore(&chip->reg_lock, flags);
1742 }
1743
1744 static void snd_cs4281_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1745 {
1746         unsigned long flags;
1747         struct cs4281 *chip = substream->rmidi->private_data;
1748         unsigned char byte;
1749
1750         spin_lock_irqsave(&chip->reg_lock, flags);
1751         if (up) {
1752                 if ((chip->midcr & BA0_MIDCR_TIE) == 0) {
1753                         chip->midcr |= BA0_MIDCR_TIE;
1754                         /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */
1755                         while ((chip->midcr & BA0_MIDCR_TIE) &&
1756                                (snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1757                                 if (snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1758                                         chip->midcr &= ~BA0_MIDCR_TIE;
1759                                 } else {
1760                                         snd_cs4281_pokeBA0(chip, BA0_MIDWP, byte);
1761                                 }
1762                         }
1763                         snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1764                 }
1765         } else {
1766                 if (chip->midcr & BA0_MIDCR_TIE) {
1767                         chip->midcr &= ~BA0_MIDCR_TIE;
1768                         snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1769                 }
1770         }
1771         spin_unlock_irqrestore(&chip->reg_lock, flags);
1772 }
1773
1774 static struct snd_rawmidi_ops snd_cs4281_midi_output =
1775 {
1776         .open =         snd_cs4281_midi_output_open,
1777         .close =        snd_cs4281_midi_output_close,
1778         .trigger =      snd_cs4281_midi_output_trigger,
1779 };
1780
1781 static struct snd_rawmidi_ops snd_cs4281_midi_input =
1782 {
1783         .open =         snd_cs4281_midi_input_open,
1784         .close =        snd_cs4281_midi_input_close,
1785         .trigger =      snd_cs4281_midi_input_trigger,
1786 };
1787
1788 static int __devinit snd_cs4281_midi(struct cs4281 * chip, int device,
1789                                      struct snd_rawmidi **rrawmidi)
1790 {
1791         struct snd_rawmidi *rmidi;
1792         int err;
1793
1794         if (rrawmidi)
1795                 *rrawmidi = NULL;
1796         if ((err = snd_rawmidi_new(chip->card, "CS4281", device, 1, 1, &rmidi)) < 0)
1797                 return err;
1798         strcpy(rmidi->name, "CS4281");
1799         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_cs4281_midi_output);
1800         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_cs4281_midi_input);
1801         rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
1802         rmidi->private_data = chip;
1803         chip->rmidi = rmidi;
1804         if (rrawmidi)
1805                 *rrawmidi = rmidi;
1806         return 0;
1807 }
1808
1809 /*
1810  *  Interrupt handler
1811  */
1812
1813 static irqreturn_t snd_cs4281_interrupt(int irq, void *dev_id)
1814 {
1815         struct cs4281 *chip = dev_id;
1816         unsigned int status, dma, val;
1817         struct cs4281_dma *cdma;
1818
1819         if (chip == NULL)
1820                 return IRQ_NONE;
1821         status = snd_cs4281_peekBA0(chip, BA0_HISR);
1822         if ((status & 0x7fffffff) == 0) {
1823                 snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1824                 return IRQ_NONE;
1825         }
1826
1827         if (status & (BA0_HISR_DMA(0)|BA0_HISR_DMA(1)|BA0_HISR_DMA(2)|BA0_HISR_DMA(3))) {
1828                 for (dma = 0; dma < 4; dma++)
1829                         if (status & BA0_HISR_DMA(dma)) {
1830                                 cdma = &chip->dma[dma];
1831                                 spin_lock(&chip->reg_lock);
1832                                 /* ack DMA IRQ */
1833                                 val = snd_cs4281_peekBA0(chip, cdma->regHDSR);
1834                                 /* workaround, sometimes CS4281 acknowledges */
1835                                 /* end or middle transfer position twice */
1836                                 cdma->frag++;
1837                                 if ((val & BA0_HDSR_DHTC) && !(cdma->frag & 1)) {
1838                                         cdma->frag--;
1839                                         chip->spurious_dhtc_irq++;
1840                                         spin_unlock(&chip->reg_lock);
1841                                         continue;
1842                                 }
1843                                 if ((val & BA0_HDSR_DTC) && (cdma->frag & 1)) {
1844                                         cdma->frag--;
1845                                         chip->spurious_dtc_irq++;
1846                                         spin_unlock(&chip->reg_lock);
1847                                         continue;
1848                                 }
1849                                 spin_unlock(&chip->reg_lock);
1850                                 snd_pcm_period_elapsed(cdma->substream);
1851                         }
1852         }
1853
1854         if ((status & BA0_HISR_MIDI) && chip->rmidi) {
1855                 unsigned char c;
1856
1857                 spin_lock(&chip->reg_lock);
1858                 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_RBE) == 0) {
1859                         c = snd_cs4281_peekBA0(chip, BA0_MIDRP);
1860                         if ((chip->midcr & BA0_MIDCR_RIE) == 0)
1861                                 continue;
1862                         snd_rawmidi_receive(chip->midi_input, &c, 1);
1863                 }
1864                 while ((snd_cs4281_peekBA0(chip, BA0_MIDSR) & BA0_MIDSR_TBF) == 0) {
1865                         if ((chip->midcr & BA0_MIDCR_TIE) == 0)
1866                                 break;
1867                         if (snd_rawmidi_transmit(chip->midi_output, &c, 1) != 1) {
1868                                 chip->midcr &= ~BA0_MIDCR_TIE;
1869                                 snd_cs4281_pokeBA0(chip, BA0_MIDCR, chip->midcr);
1870                                 break;
1871                         }
1872                         snd_cs4281_pokeBA0(chip, BA0_MIDWP, c);
1873                 }
1874                 spin_unlock(&chip->reg_lock);
1875         }
1876
1877         /* EOI to the PCI part... reenables interrupts */
1878         snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_EOI);
1879
1880         return IRQ_HANDLED;
1881 }
1882
1883
1884 /*
1885  * OPL3 command
1886  */
1887 static void snd_cs4281_opl3_command(struct snd_opl3 *opl3, unsigned short cmd,
1888                                     unsigned char val)
1889 {
1890         unsigned long flags;
1891         struct cs4281 *chip = opl3->private_data;
1892         void __iomem *port;
1893
1894         if (cmd & OPL3_RIGHT)
1895                 port = chip->ba0 + BA0_B1AP; /* right port */
1896         else
1897                 port = chip->ba0 + BA0_B0AP; /* left port */
1898
1899         spin_lock_irqsave(&opl3->reg_lock, flags);
1900
1901         writel((unsigned int)cmd, port);
1902         udelay(10);
1903
1904         writel((unsigned int)val, port + 4);
1905         udelay(30);
1906
1907         spin_unlock_irqrestore(&opl3->reg_lock, flags);
1908 }
1909
1910 static int __devinit snd_cs4281_probe(struct pci_dev *pci,
1911                                       const struct pci_device_id *pci_id)
1912 {
1913         static int dev;
1914         struct snd_card *card;
1915         struct cs4281 *chip;
1916         struct snd_opl3 *opl3;
1917         int err;
1918
1919         if (dev >= SNDRV_CARDS)
1920                 return -ENODEV;
1921         if (!enable[dev]) {
1922                 dev++;
1923                 return -ENOENT;
1924         }
1925
1926         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1927         if (card == NULL)
1928                 return -ENOMEM;
1929
1930         if ((err = snd_cs4281_create(card, pci, &chip, dual_codec[dev])) < 0) {
1931                 snd_card_free(card);
1932                 return err;
1933         }
1934         card->private_data = chip;
1935
1936         if ((err = snd_cs4281_mixer(chip)) < 0) {
1937                 snd_card_free(card);
1938                 return err;
1939         }
1940         if ((err = snd_cs4281_pcm(chip, 0, NULL)) < 0) {
1941                 snd_card_free(card);
1942                 return err;
1943         }
1944         if ((err = snd_cs4281_midi(chip, 0, NULL)) < 0) {
1945                 snd_card_free(card);
1946                 return err;
1947         }
1948         if ((err = snd_opl3_new(card, OPL3_HW_OPL3_CS4281, &opl3)) < 0) {
1949                 snd_card_free(card);
1950                 return err;
1951         }
1952         opl3->private_data = chip;
1953         opl3->command = snd_cs4281_opl3_command;
1954         snd_opl3_init(opl3);
1955         if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1956                 snd_card_free(card);
1957                 return err;
1958         }
1959         snd_cs4281_create_gameport(chip);
1960         strcpy(card->driver, "CS4281");
1961         strcpy(card->shortname, "Cirrus Logic CS4281");
1962         sprintf(card->longname, "%s at 0x%lx, irq %d",
1963                 card->shortname,
1964                 chip->ba0_addr,
1965                 chip->irq);
1966
1967         if ((err = snd_card_register(card)) < 0) {
1968                 snd_card_free(card);
1969                 return err;
1970         }
1971
1972         pci_set_drvdata(pci, card);
1973         dev++;
1974         return 0;
1975 }
1976
1977 static void __devexit snd_cs4281_remove(struct pci_dev *pci)
1978 {
1979         snd_card_free(pci_get_drvdata(pci));
1980         pci_set_drvdata(pci, NULL);
1981 }
1982
1983 /*
1984  * Power Management
1985  */
1986 #ifdef CONFIG_PM
1987
1988 static int saved_regs[SUSPEND_REGISTERS] = {
1989         BA0_JSCTL,
1990         BA0_GPIOR,
1991         BA0_SSCR,
1992         BA0_MIDCR,
1993         BA0_SRCSA,
1994         BA0_PASR,
1995         BA0_CASR,
1996         BA0_DACSR,
1997         BA0_ADCSR,
1998         BA0_FMLVC,
1999         BA0_FMRVC,
2000         BA0_PPLVC,
2001         BA0_PPRVC,
2002 };
2003
2004 #define CLKCR1_CKRA                             0x00010000L
2005
2006 static int cs4281_suspend(struct pci_dev *pci, pm_message_t state)
2007 {
2008         struct snd_card *card = pci_get_drvdata(pci);
2009         struct cs4281 *chip = card->private_data;
2010         u32 ulCLK;
2011         unsigned int i;
2012
2013         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2014         snd_pcm_suspend_all(chip->pcm);
2015
2016         snd_ac97_suspend(chip->ac97);
2017         snd_ac97_suspend(chip->ac97_secondary);
2018
2019         ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2020         ulCLK |= CLKCR1_CKRA;
2021         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2022
2023         /* Disable interrupts. */
2024         snd_cs4281_pokeBA0(chip, BA0_HICR, BA0_HICR_CHGM);
2025
2026         /* remember the status registers */
2027         for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2028                 if (saved_regs[i])
2029                         chip->suspend_regs[i] = snd_cs4281_peekBA0(chip, saved_regs[i]);
2030
2031         /* Turn off the serial ports. */
2032         snd_cs4281_pokeBA0(chip, BA0_SERMC, 0);
2033
2034         /* Power off FM, Joystick, AC link, */
2035         snd_cs4281_pokeBA0(chip, BA0_SSPM, 0);
2036
2037         /* DLL off. */
2038         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, 0);
2039
2040         /* AC link off. */
2041         snd_cs4281_pokeBA0(chip, BA0_SPMC, 0);
2042
2043         ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2044         ulCLK &= ~CLKCR1_CKRA;
2045         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2046
2047         pci_disable_device(pci);
2048         pci_save_state(pci);
2049         pci_set_power_state(pci, pci_choose_state(pci, state));
2050         return 0;
2051 }
2052
2053 static int cs4281_resume(struct pci_dev *pci)
2054 {
2055         struct snd_card *card = pci_get_drvdata(pci);
2056         struct cs4281 *chip = card->private_data;
2057         unsigned int i;
2058         u32 ulCLK;
2059
2060         pci_set_power_state(pci, PCI_D0);
2061         pci_restore_state(pci);
2062         if (pci_enable_device(pci) < 0) {
2063                 printk(KERN_ERR "cs4281: pci_enable_device failed, "
2064                        "disabling device\n");
2065                 snd_card_disconnect(card);
2066                 return -EIO;
2067         }
2068         pci_set_master(pci);
2069
2070         ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2071         ulCLK |= CLKCR1_CKRA;
2072         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2073
2074         snd_cs4281_chip_init(chip);
2075
2076         /* restore the status registers */
2077         for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
2078                 if (saved_regs[i])
2079                         snd_cs4281_pokeBA0(chip, saved_regs[i], chip->suspend_regs[i]);
2080
2081         snd_ac97_resume(chip->ac97);
2082         snd_ac97_resume(chip->ac97_secondary);
2083
2084         ulCLK = snd_cs4281_peekBA0(chip, BA0_CLKCR1);
2085         ulCLK &= ~CLKCR1_CKRA;
2086         snd_cs4281_pokeBA0(chip, BA0_CLKCR1, ulCLK);
2087
2088         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2089         return 0;
2090 }
2091 #endif /* CONFIG_PM */
2092
2093 static struct pci_driver driver = {
2094         .name = "CS4281",
2095         .id_table = snd_cs4281_ids,
2096         .probe = snd_cs4281_probe,
2097         .remove = __devexit_p(snd_cs4281_remove),
2098 #ifdef CONFIG_PM
2099         .suspend = cs4281_suspend,
2100         .resume = cs4281_resume,
2101 #endif
2102 };
2103
2104 static int __init alsa_card_cs4281_init(void)
2105 {
2106         return pci_register_driver(&driver);
2107 }
2108
2109 static void __exit alsa_card_cs4281_exit(void)
2110 {
2111         pci_unregister_driver(&driver);
2112 }
2113
2114 module_init(alsa_card_cs4281_init)
2115 module_exit(alsa_card_cs4281_exit)