sound/pci/atiixp.c

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This source file includes following definitions.
snd_atiixp_update_bits
atiixp_clear_dma_packets
snd_atiixp_acquire_codec
snd_atiixp_codec_read
snd_atiixp_codec_write
snd_atiixp_ac97_read
snd_atiixp_ac97_write
snd_atiixp_aclink_reset
snd_atiixp_aclink_down
ac97_probing_bugs
snd_atiixp_codec_detect
snd_atiixp_chip_start
snd_atiixp_chip_stop
snd_atiixp_pcm_pointer
snd_atiixp_xrun_dma
snd_atiixp_update_dma
snd_atiixp_check_bus_busy
snd_atiixp_pcm_trigger
atiixp_out_flush_dma
atiixp_out_enable_dma
atiixp_out_enable_transfer
atiixp_in_enable_dma
atiixp_in_enable_transfer
atiixp_in_flush_dma
atiixp_spdif_enable_dma
atiixp_spdif_enable_transfer
atiixp_spdif_flush_dma
snd_atiixp_spdif_prepare
snd_atiixp_playback_prepare
snd_atiixp_capture_prepare
snd_atiixp_pcm_hw_params
snd_atiixp_pcm_hw_free
snd_atiixp_pcm_open
snd_atiixp_pcm_close
snd_atiixp_playback_open
snd_atiixp_playback_close
snd_atiixp_capture_open
snd_atiixp_capture_close
snd_atiixp_spdif_open
snd_atiixp_spdif_close
snd_atiixp_pcm_new
snd_atiixp_interrupt
snd_atiixp_mixer_new
snd_atiixp_suspend
snd_atiixp_resume
snd_atiixp_proc_read
snd_atiixp_proc_init
snd_atiixp_free
snd_atiixp_dev_free
snd_atiixp_create
snd_atiixp_probe
snd_atiixp_remove
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   ALSA driver for ATI IXP 150/200/250/300 AC97 controllers
   4  *
   5  *      Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
   6  */
   7 
   8 #include <linux/io.h>
   9 #include <linux/delay.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/init.h>
  12 #include <linux/pci.h>
  13 #include <linux/slab.h>
  14 #include <linux/module.h>
  15 #include <linux/mutex.h>
  16 #include <sound/core.h>
  17 #include <sound/pcm.h>
  18 #include <sound/pcm_params.h>
  19 #include <sound/info.h>
  20 #include <sound/ac97_codec.h>
  21 #include <sound/initval.h>
  22 
  23 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
  24 MODULE_DESCRIPTION("ATI IXP AC97 controller");
  25 MODULE_LICENSE("GPL");
  26 MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250/300/400/600}}");
  27 
  28 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  29 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  30 static int ac97_clock = 48000;
  31 static char *ac97_quirk;
  32 static bool spdif_aclink = 1;
  33 static int ac97_codec = -1;
  34 
  35 module_param(index, int, 0444);
  36 MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
  37 module_param(id, charp, 0444);
  38 MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
  39 module_param(ac97_clock, int, 0444);
  40 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
  41 module_param(ac97_quirk, charp, 0444);
  42 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
  43 module_param(ac97_codec, int, 0444);
  44 MODULE_PARM_DESC(ac97_codec, "Specify codec instead of probing.");
  45 module_param(spdif_aclink, bool, 0444);
  46 MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
  47 
  48 /* just for backward compatibility */
  49 static bool enable;
  50 module_param(enable, bool, 0444);
  51 
  52 
  53 /*
  54  */
  55 
  56 #define ATI_REG_ISR                     0x00    /* interrupt source */
  57 #define  ATI_REG_ISR_IN_XRUN            (1U<<0)
  58 #define  ATI_REG_ISR_IN_STATUS          (1U<<1)
  59 #define  ATI_REG_ISR_OUT_XRUN           (1U<<2)
  60 #define  ATI_REG_ISR_OUT_STATUS         (1U<<3)
  61 #define  ATI_REG_ISR_SPDF_XRUN          (1U<<4)
  62 #define  ATI_REG_ISR_SPDF_STATUS        (1U<<5)
  63 #define  ATI_REG_ISR_PHYS_INTR          (1U<<8)
  64 #define  ATI_REG_ISR_PHYS_MISMATCH      (1U<<9)
  65 #define  ATI_REG_ISR_CODEC0_NOT_READY   (1U<<10)
  66 #define  ATI_REG_ISR_CODEC1_NOT_READY   (1U<<11)
  67 #define  ATI_REG_ISR_CODEC2_NOT_READY   (1U<<12)
  68 #define  ATI_REG_ISR_NEW_FRAME          (1U<<13)
  69 
  70 #define ATI_REG_IER                     0x04    /* interrupt enable */
  71 #define  ATI_REG_IER_IN_XRUN_EN         (1U<<0)
  72 #define  ATI_REG_IER_IO_STATUS_EN       (1U<<1)
  73 #define  ATI_REG_IER_OUT_XRUN_EN        (1U<<2)
  74 #define  ATI_REG_IER_OUT_XRUN_COND      (1U<<3)
  75 #define  ATI_REG_IER_SPDF_XRUN_EN       (1U<<4)
  76 #define  ATI_REG_IER_SPDF_STATUS_EN     (1U<<5)
  77 #define  ATI_REG_IER_PHYS_INTR_EN       (1U<<8)
  78 #define  ATI_REG_IER_PHYS_MISMATCH_EN   (1U<<9)
  79 #define  ATI_REG_IER_CODEC0_INTR_EN     (1U<<10)
  80 #define  ATI_REG_IER_CODEC1_INTR_EN     (1U<<11)
  81 #define  ATI_REG_IER_CODEC2_INTR_EN     (1U<<12)
  82 #define  ATI_REG_IER_NEW_FRAME_EN       (1U<<13)        /* (RO */
  83 #define  ATI_REG_IER_SET_BUS_BUSY       (1U<<14)        /* (WO) audio is running */
  84 
  85 #define ATI_REG_CMD                     0x08    /* command */
  86 #define  ATI_REG_CMD_POWERDOWN          (1U<<0)
  87 #define  ATI_REG_CMD_RECEIVE_EN         (1U<<1)
  88 #define  ATI_REG_CMD_SEND_EN            (1U<<2)
  89 #define  ATI_REG_CMD_STATUS_MEM         (1U<<3)
  90 #define  ATI_REG_CMD_SPDF_OUT_EN        (1U<<4)
  91 #define  ATI_REG_CMD_SPDF_STATUS_MEM    (1U<<5)
  92 #define  ATI_REG_CMD_SPDF_THRESHOLD     (3U<<6)
  93 #define  ATI_REG_CMD_SPDF_THRESHOLD_SHIFT       6
  94 #define  ATI_REG_CMD_IN_DMA_EN          (1U<<8)
  95 #define  ATI_REG_CMD_OUT_DMA_EN         (1U<<9)
  96 #define  ATI_REG_CMD_SPDF_DMA_EN        (1U<<10)
  97 #define  ATI_REG_CMD_SPDF_OUT_STOPPED   (1U<<11)
  98 #define  ATI_REG_CMD_SPDF_CONFIG_MASK   (7U<<12)
  99 #define   ATI_REG_CMD_SPDF_CONFIG_34    (1U<<12)
 100 #define   ATI_REG_CMD_SPDF_CONFIG_78    (2U<<12)
 101 #define   ATI_REG_CMD_SPDF_CONFIG_69    (3U<<12)
 102 #define   ATI_REG_CMD_SPDF_CONFIG_01    (4U<<12)
 103 #define  ATI_REG_CMD_INTERLEAVE_SPDF    (1U<<16)
 104 #define  ATI_REG_CMD_AUDIO_PRESENT      (1U<<20)
 105 #define  ATI_REG_CMD_INTERLEAVE_IN      (1U<<21)
 106 #define  ATI_REG_CMD_INTERLEAVE_OUT     (1U<<22)
 107 #define  ATI_REG_CMD_LOOPBACK_EN        (1U<<23)
 108 #define  ATI_REG_CMD_PACKED_DIS         (1U<<24)
 109 #define  ATI_REG_CMD_BURST_EN           (1U<<25)
 110 #define  ATI_REG_CMD_PANIC_EN           (1U<<26)
 111 #define  ATI_REG_CMD_MODEM_PRESENT      (1U<<27)
 112 #define  ATI_REG_CMD_ACLINK_ACTIVE      (1U<<28)
 113 #define  ATI_REG_CMD_AC_SOFT_RESET      (1U<<29)
 114 #define  ATI_REG_CMD_AC_SYNC            (1U<<30)
 115 #define  ATI_REG_CMD_AC_RESET           (1U<<31)
 116 
 117 #define ATI_REG_PHYS_OUT_ADDR           0x0c
 118 #define  ATI_REG_PHYS_OUT_CODEC_MASK    (3U<<0)
 119 #define  ATI_REG_PHYS_OUT_RW            (1U<<2)
 120 #define  ATI_REG_PHYS_OUT_ADDR_EN       (1U<<8)
 121 #define  ATI_REG_PHYS_OUT_ADDR_SHIFT    9
 122 #define  ATI_REG_PHYS_OUT_DATA_SHIFT    16
 123 
 124 #define ATI_REG_PHYS_IN_ADDR            0x10
 125 #define  ATI_REG_PHYS_IN_READ_FLAG      (1U<<8)
 126 #define  ATI_REG_PHYS_IN_ADDR_SHIFT     9
 127 #define  ATI_REG_PHYS_IN_DATA_SHIFT     16
 128 
 129 #define ATI_REG_SLOTREQ                 0x14
 130 
 131 #define ATI_REG_COUNTER                 0x18
 132 #define  ATI_REG_COUNTER_SLOT           (3U<<0) /* slot # */
 133 #define  ATI_REG_COUNTER_BITCLOCK       (31U<<8)
 134 
 135 #define ATI_REG_IN_FIFO_THRESHOLD       0x1c
 136 
 137 #define ATI_REG_IN_DMA_LINKPTR          0x20
 138 #define ATI_REG_IN_DMA_DT_START         0x24    /* RO */
 139 #define ATI_REG_IN_DMA_DT_NEXT          0x28    /* RO */
 140 #define ATI_REG_IN_DMA_DT_CUR           0x2c    /* RO */
 141 #define ATI_REG_IN_DMA_DT_SIZE          0x30
 142 
 143 #define ATI_REG_OUT_DMA_SLOT            0x34
 144 #define  ATI_REG_OUT_DMA_SLOT_BIT(x)    (1U << ((x) - 3))
 145 #define  ATI_REG_OUT_DMA_SLOT_MASK      0x1ff
 146 #define  ATI_REG_OUT_DMA_THRESHOLD_MASK 0xf800
 147 #define  ATI_REG_OUT_DMA_THRESHOLD_SHIFT        11
 148 
 149 #define ATI_REG_OUT_DMA_LINKPTR         0x38
 150 #define ATI_REG_OUT_DMA_DT_START        0x3c    /* RO */
 151 #define ATI_REG_OUT_DMA_DT_NEXT         0x40    /* RO */
 152 #define ATI_REG_OUT_DMA_DT_CUR          0x44    /* RO */
 153 #define ATI_REG_OUT_DMA_DT_SIZE         0x48
 154 
 155 #define ATI_REG_SPDF_CMD                0x4c
 156 #define  ATI_REG_SPDF_CMD_LFSR          (1U<<4)
 157 #define  ATI_REG_SPDF_CMD_SINGLE_CH     (1U<<5)
 158 #define  ATI_REG_SPDF_CMD_LFSR_ACC      (0xff<<8)       /* RO */
 159 
 160 #define ATI_REG_SPDF_DMA_LINKPTR        0x50
 161 #define ATI_REG_SPDF_DMA_DT_START       0x54    /* RO */
 162 #define ATI_REG_SPDF_DMA_DT_NEXT        0x58    /* RO */
 163 #define ATI_REG_SPDF_DMA_DT_CUR         0x5c    /* RO */
 164 #define ATI_REG_SPDF_DMA_DT_SIZE        0x60
 165 
 166 #define ATI_REG_MODEM_MIRROR            0x7c
 167 #define ATI_REG_AUDIO_MIRROR            0x80
 168 
 169 #define ATI_REG_6CH_REORDER             0x84    /* reorder slots for 6ch */
 170 #define  ATI_REG_6CH_REORDER_EN         (1U<<0) /* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
 171 
 172 #define ATI_REG_FIFO_FLUSH              0x88
 173 #define  ATI_REG_FIFO_OUT_FLUSH         (1U<<0)
 174 #define  ATI_REG_FIFO_IN_FLUSH          (1U<<1)
 175 
 176 /* LINKPTR */
 177 #define  ATI_REG_LINKPTR_EN             (1U<<0)
 178 
 179 /* [INT|OUT|SPDIF]_DMA_DT_SIZE */
 180 #define  ATI_REG_DMA_DT_SIZE            (0xffffU<<0)
 181 #define  ATI_REG_DMA_FIFO_USED          (0x1fU<<16)
 182 #define  ATI_REG_DMA_FIFO_FREE          (0x1fU<<21)
 183 #define  ATI_REG_DMA_STATE              (7U<<26)
 184 
 185 
 186 #define ATI_MAX_DESCRIPTORS     256     /* max number of descriptor packets */
 187 
 188 
 189 struct atiixp;
 190 
 191 /*
 192  * DMA packate descriptor
 193  */
 194 
 195 struct atiixp_dma_desc {
 196         __le32 addr;    /* DMA buffer address */
 197         u16 status;     /* status bits */
 198         u16 size;       /* size of the packet in dwords */
 199         __le32 next;    /* address of the next packet descriptor */
 200 };
 201 
 202 /*
 203  * stream enum
 204  */
 205 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, ATI_DMA_SPDIF, NUM_ATI_DMAS }; /* DMAs */
 206 enum { ATI_PCM_OUT, ATI_PCM_IN, ATI_PCM_SPDIF, NUM_ATI_PCMS }; /* AC97 pcm slots */
 207 enum { ATI_PCMDEV_ANALOG, ATI_PCMDEV_DIGITAL, NUM_ATI_PCMDEVS }; /* pcm devices */
 208 
 209 #define NUM_ATI_CODECS  3
 210 
 211 
 212 /*
 213  * constants and callbacks for each DMA type
 214  */
 215 struct atiixp_dma_ops {
 216         int type;                       /* ATI_DMA_XXX */
 217         unsigned int llp_offset;        /* LINKPTR offset */
 218         unsigned int dt_cur;            /* DT_CUR offset */
 219         /* called from open callback */
 220         void (*enable_dma)(struct atiixp *chip, int on);
 221         /* called from trigger (START/STOP) */
 222         void (*enable_transfer)(struct atiixp *chip, int on);
 223         /* called from trigger (STOP only) */
 224         void (*flush_dma)(struct atiixp *chip);
 225 };
 226 
 227 /*
 228  * DMA stream
 229  */
 230 struct atiixp_dma {
 231         const struct atiixp_dma_ops *ops;
 232         struct snd_dma_buffer desc_buf;
 233         struct snd_pcm_substream *substream;    /* assigned PCM substream */
 234         unsigned int buf_addr, buf_bytes;       /* DMA buffer address, bytes */
 235         unsigned int period_bytes, periods;
 236         int opened;
 237         int running;
 238         int suspended;
 239         int pcm_open_flag;
 240         int ac97_pcm_type;      /* index # of ac97_pcm to access, -1 = not used */
 241         unsigned int saved_curptr;
 242 };
 243 
 244 /*
 245  * ATI IXP chip
 246  */
 247 struct atiixp {
 248         struct snd_card *card;
 249         struct pci_dev *pci;
 250 
 251         unsigned long addr;
 252         void __iomem *remap_addr;
 253         int irq;
 254         
 255         struct snd_ac97_bus *ac97_bus;
 256         struct snd_ac97 *ac97[NUM_ATI_CODECS];
 257 
 258         spinlock_t reg_lock;
 259 
 260         struct atiixp_dma dmas[NUM_ATI_DMAS];
 261         struct ac97_pcm *pcms[NUM_ATI_PCMS];
 262         struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS];
 263 
 264         int max_channels;               /* max. channels for PCM out */
 265 
 266         unsigned int codec_not_ready_bits;      /* for codec detection */
 267 
 268         int spdif_over_aclink;          /* passed from the module option */
 269         struct mutex open_mutex;        /* playback open mutex */
 270 };
 271 
 272 
 273 /*
 274  */
 275 static const struct pci_device_id snd_atiixp_ids[] = {
 276         { PCI_VDEVICE(ATI, 0x4341), 0 }, /* SB200 */
 277         { PCI_VDEVICE(ATI, 0x4361), 0 }, /* SB300 */
 278         { PCI_VDEVICE(ATI, 0x4370), 0 }, /* SB400 */
 279         { PCI_VDEVICE(ATI, 0x4382), 0 }, /* SB600 */
 280         { 0, }
 281 };
 282 
 283 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
 284 
 285 static struct snd_pci_quirk atiixp_quirks[] = {
 286         SND_PCI_QUIRK(0x105b, 0x0c81, "Foxconn RC4107MA-RS2", 0),
 287         SND_PCI_QUIRK(0x15bd, 0x3100, "DFI RS482", 0),
 288         { } /* terminator */
 289 };
 290 
 291 /*
 292  * lowlevel functions
 293  */
 294 
 295 /*
 296  * update the bits of the given register.
 297  * return 1 if the bits changed.
 298  */
 299 static int snd_atiixp_update_bits(struct atiixp *chip, unsigned int reg,
 300                                  unsigned int mask, unsigned int value)
 301 {
 302         void __iomem *addr = chip->remap_addr + reg;
 303         unsigned int data, old_data;
 304         old_data = data = readl(addr);
 305         data &= ~mask;
 306         data |= value;
 307         if (old_data == data)
 308                 return 0;
 309         writel(data, addr);
 310         return 1;
 311 }
 312 
 313 /*
 314  * macros for easy use
 315  */
 316 #define atiixp_write(chip,reg,value) \
 317         writel(value, chip->remap_addr + ATI_REG_##reg)
 318 #define atiixp_read(chip,reg) \
 319         readl(chip->remap_addr + ATI_REG_##reg)
 320 #define atiixp_update(chip,reg,mask,val) \
 321         snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
 322 
 323 /*
 324  * handling DMA packets
 325  *
 326  * we allocate a linear buffer for the DMA, and split it to  each packet.
 327  * in a future version, a scatter-gather buffer should be implemented.
 328  */
 329 
 330 #define ATI_DESC_LIST_SIZE \
 331         PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
 332 
 333 /*
 334  * build packets ring for the given buffer size.
 335  *
 336  * IXP handles the buffer descriptors, which are connected as a linked
 337  * list.  although we can change the list dynamically, in this version,
 338  * a static RING of buffer descriptors is used.
 339  *
 340  * the ring is built in this function, and is set up to the hardware. 
 341  */
 342 static int atiixp_build_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
 343                                     struct snd_pcm_substream *substream,
 344                                     unsigned int periods,
 345                                     unsigned int period_bytes)
 346 {
 347         unsigned int i;
 348         u32 addr, desc_addr;
 349         unsigned long flags;
 350 
 351         if (periods > ATI_MAX_DESCRIPTORS)
 352                 return -ENOMEM;
 353 
 354         if (dma->desc_buf.area == NULL) {
 355                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
 356                                         snd_dma_pci_data(chip->pci),
 357                                         ATI_DESC_LIST_SIZE,
 358                                         &dma->desc_buf) < 0)
 359                         return -ENOMEM;
 360                 dma->period_bytes = dma->periods = 0; /* clear */
 361         }
 362 
 363         if (dma->periods == periods && dma->period_bytes == period_bytes)
 364                 return 0;
 365 
 366         /* reset DMA before changing the descriptor table */
 367         spin_lock_irqsave(&chip->reg_lock, flags);
 368         writel(0, chip->remap_addr + dma->ops->llp_offset);
 369         dma->ops->enable_dma(chip, 0);
 370         dma->ops->enable_dma(chip, 1);
 371         spin_unlock_irqrestore(&chip->reg_lock, flags);
 372 
 373         /* fill the entries */
 374         addr = (u32)substream->runtime->dma_addr;
 375         desc_addr = (u32)dma->desc_buf.addr;
 376         for (i = 0; i < periods; i++) {
 377                 struct atiixp_dma_desc *desc;
 378                 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
 379                 desc->addr = cpu_to_le32(addr);
 380                 desc->status = 0;
 381                 desc->size = period_bytes >> 2; /* in dwords */
 382                 desc_addr += sizeof(struct atiixp_dma_desc);
 383                 if (i == periods - 1)
 384                         desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
 385                 else
 386                         desc->next = cpu_to_le32(desc_addr);
 387                 addr += period_bytes;
 388         }
 389 
 390         writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
 391                chip->remap_addr + dma->ops->llp_offset);
 392 
 393         dma->period_bytes = period_bytes;
 394         dma->periods = periods;
 395 
 396         return 0;
 397 }
 398 
 399 /*
 400  * remove the ring buffer and release it if assigned
 401  */
 402 static void atiixp_clear_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
 403                                      struct snd_pcm_substream *substream)
 404 {
 405         if (dma->desc_buf.area) {
 406                 writel(0, chip->remap_addr + dma->ops->llp_offset);
 407                 snd_dma_free_pages(&dma->desc_buf);
 408                 dma->desc_buf.area = NULL;
 409         }
 410 }
 411 
 412 /*
 413  * AC97 interface
 414  */
 415 static int snd_atiixp_acquire_codec(struct atiixp *chip)
 416 {
 417         int timeout = 1000;
 418 
 419         while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
 420                 if (! timeout--) {
 421                         dev_warn(chip->card->dev, "codec acquire timeout\n");
 422                         return -EBUSY;
 423                 }
 424                 udelay(1);
 425         }
 426         return 0;
 427 }
 428 
 429 static unsigned short snd_atiixp_codec_read(struct atiixp *chip, unsigned short codec, unsigned short reg)
 430 {
 431         unsigned int data;
 432         int timeout;
 433 
 434         if (snd_atiixp_acquire_codec(chip) < 0)
 435                 return 0xffff;
 436         data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
 437                 ATI_REG_PHYS_OUT_ADDR_EN |
 438                 ATI_REG_PHYS_OUT_RW |
 439                 codec;
 440         atiixp_write(chip, PHYS_OUT_ADDR, data);
 441         if (snd_atiixp_acquire_codec(chip) < 0)
 442                 return 0xffff;
 443         timeout = 1000;
 444         do {
 445                 data = atiixp_read(chip, PHYS_IN_ADDR);
 446                 if (data & ATI_REG_PHYS_IN_READ_FLAG)
 447                         return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
 448                 udelay(1);
 449         } while (--timeout);
 450         /* time out may happen during reset */
 451         if (reg < 0x7c)
 452                 dev_warn(chip->card->dev, "codec read timeout (reg %x)\n", reg);
 453         return 0xffff;
 454 }
 455 
 456 
 457 static void snd_atiixp_codec_write(struct atiixp *chip, unsigned short codec,
 458                                    unsigned short reg, unsigned short val)
 459 {
 460         unsigned int data;
 461     
 462         if (snd_atiixp_acquire_codec(chip) < 0)
 463                 return;
 464         data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
 465                 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
 466                 ATI_REG_PHYS_OUT_ADDR_EN | codec;
 467         atiixp_write(chip, PHYS_OUT_ADDR, data);
 468 }
 469 
 470 
 471 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
 472                                            unsigned short reg)
 473 {
 474         struct atiixp *chip = ac97->private_data;
 475         return snd_atiixp_codec_read(chip, ac97->num, reg);
 476     
 477 }
 478 
 479 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
 480                                   unsigned short val)
 481 {
 482         struct atiixp *chip = ac97->private_data;
 483         snd_atiixp_codec_write(chip, ac97->num, reg, val);
 484 }
 485 
 486 /*
 487  * reset AC link
 488  */
 489 static int snd_atiixp_aclink_reset(struct atiixp *chip)
 490 {
 491         int timeout;
 492 
 493         /* reset powerdoewn */
 494         if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
 495                 udelay(10);
 496 
 497         /* perform a software reset */
 498         atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
 499         atiixp_read(chip, CMD);
 500         udelay(10);
 501         atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
 502     
 503         timeout = 10;
 504         while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
 505                 /* do a hard reset */
 506                 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
 507                               ATI_REG_CMD_AC_SYNC);
 508                 atiixp_read(chip, CMD);
 509                 mdelay(1);
 510                 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
 511                 if (!--timeout) {
 512                         dev_err(chip->card->dev, "codec reset timeout\n");
 513                         break;
 514                 }
 515         }
 516 
 517         /* deassert RESET and assert SYNC to make sure */
 518         atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
 519                       ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
 520 
 521         return 0;
 522 }
 523 
 524 #ifdef CONFIG_PM_SLEEP
 525 static int snd_atiixp_aclink_down(struct atiixp *chip)
 526 {
 527         // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
 528         //      return -EBUSY;
 529         atiixp_update(chip, CMD,
 530                      ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
 531                      ATI_REG_CMD_POWERDOWN);
 532         return 0;
 533 }
 534 #endif
 535 
 536 /*
 537  * auto-detection of codecs
 538  *
 539  * the IXP chip can generate interrupts for the non-existing codecs.
 540  * NEW_FRAME interrupt is used to make sure that the interrupt is generated
 541  * even if all three codecs are connected.
 542  */
 543 
 544 #define ALL_CODEC_NOT_READY \
 545             (ATI_REG_ISR_CODEC0_NOT_READY |\
 546              ATI_REG_ISR_CODEC1_NOT_READY |\
 547              ATI_REG_ISR_CODEC2_NOT_READY)
 548 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
 549 
 550 static int ac97_probing_bugs(struct pci_dev *pci)
 551 {
 552         const struct snd_pci_quirk *q;
 553 
 554         q = snd_pci_quirk_lookup(pci, atiixp_quirks);
 555         if (q) {
 556                 dev_dbg(&pci->dev, "atiixp quirk for %s.  Forcing codec %d\n",
 557                         snd_pci_quirk_name(q), q->value);
 558                 return q->value;
 559         }
 560         /* this hardware doesn't need workarounds.  Probe for codec */
 561         return -1;
 562 }
 563 
 564 static int snd_atiixp_codec_detect(struct atiixp *chip)
 565 {
 566         int timeout;
 567 
 568         chip->codec_not_ready_bits = 0;
 569         if (ac97_codec == -1)
 570                 ac97_codec = ac97_probing_bugs(chip->pci);
 571         if (ac97_codec >= 0) {
 572                 chip->codec_not_ready_bits |= 
 573                         CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10));
 574                 return 0;
 575         }
 576 
 577         atiixp_write(chip, IER, CODEC_CHECK_BITS);
 578         /* wait for the interrupts */
 579         timeout = 50;
 580         while (timeout-- > 0) {
 581                 mdelay(1);
 582                 if (chip->codec_not_ready_bits)
 583                         break;
 584         }
 585         atiixp_write(chip, IER, 0); /* disable irqs */
 586 
 587         if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
 588                 dev_err(chip->card->dev, "no codec detected!\n");
 589                 return -ENXIO;
 590         }
 591         return 0;
 592 }
 593 
 594 
 595 /*
 596  * enable DMA and irqs
 597  */
 598 static int snd_atiixp_chip_start(struct atiixp *chip)
 599 {
 600         unsigned int reg;
 601 
 602         /* set up spdif, enable burst mode */
 603         reg = atiixp_read(chip, CMD);
 604         reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
 605         reg |= ATI_REG_CMD_BURST_EN;
 606         atiixp_write(chip, CMD, reg);
 607 
 608         reg = atiixp_read(chip, SPDF_CMD);
 609         reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
 610         atiixp_write(chip, SPDF_CMD, reg);
 611 
 612         /* clear all interrupt source */
 613         atiixp_write(chip, ISR, 0xffffffff);
 614         /* enable irqs */
 615         atiixp_write(chip, IER,
 616                      ATI_REG_IER_IO_STATUS_EN |
 617                      ATI_REG_IER_IN_XRUN_EN |
 618                      ATI_REG_IER_OUT_XRUN_EN |
 619                      ATI_REG_IER_SPDF_XRUN_EN |
 620                      ATI_REG_IER_SPDF_STATUS_EN);
 621         return 0;
 622 }
 623 
 624 
 625 /*
 626  * disable DMA and IRQs
 627  */
 628 static int snd_atiixp_chip_stop(struct atiixp *chip)
 629 {
 630         /* clear interrupt source */
 631         atiixp_write(chip, ISR, atiixp_read(chip, ISR));
 632         /* disable irqs */
 633         atiixp_write(chip, IER, 0);
 634         return 0;
 635 }
 636 
 637 
 638 /*
 639  * PCM section
 640  */
 641 
 642 /*
 643  * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
 644  * position.  when SG-buffer is implemented, the offset must be calculated
 645  * correctly...
 646  */
 647 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
 648 {
 649         struct atiixp *chip = snd_pcm_substream_chip(substream);
 650         struct snd_pcm_runtime *runtime = substream->runtime;
 651         struct atiixp_dma *dma = runtime->private_data;
 652         unsigned int curptr;
 653         int timeout = 1000;
 654 
 655         while (timeout--) {
 656                 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
 657                 if (curptr < dma->buf_addr)
 658                         continue;
 659                 curptr -= dma->buf_addr;
 660                 if (curptr >= dma->buf_bytes)
 661                         continue;
 662                 return bytes_to_frames(runtime, curptr);
 663         }
 664         dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n",
 665                    readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
 666         return 0;
 667 }
 668 
 669 /*
 670  * XRUN detected, and stop the PCM substream
 671  */
 672 static void snd_atiixp_xrun_dma(struct atiixp *chip, struct atiixp_dma *dma)
 673 {
 674         if (! dma->substream || ! dma->running)
 675                 return;
 676         dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type);
 677         snd_pcm_stop_xrun(dma->substream);
 678 }
 679 
 680 /*
 681  * the period ack.  update the substream.
 682  */
 683 static void snd_atiixp_update_dma(struct atiixp *chip, struct atiixp_dma *dma)
 684 {
 685         if (! dma->substream || ! dma->running)
 686                 return;
 687         snd_pcm_period_elapsed(dma->substream);
 688 }
 689 
 690 /* set BUS_BUSY interrupt bit if any DMA is running */
 691 /* call with spinlock held */
 692 static void snd_atiixp_check_bus_busy(struct atiixp *chip)
 693 {
 694         unsigned int bus_busy;
 695         if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
 696                                       ATI_REG_CMD_RECEIVE_EN |
 697                                       ATI_REG_CMD_SPDF_OUT_EN))
 698                 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
 699         else
 700                 bus_busy = 0;
 701         atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
 702 }
 703 
 704 /* common trigger callback
 705  * calling the lowlevel callbacks in it
 706  */
 707 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 708 {
 709         struct atiixp *chip = snd_pcm_substream_chip(substream);
 710         struct atiixp_dma *dma = substream->runtime->private_data;
 711         int err = 0;
 712 
 713         if (snd_BUG_ON(!dma->ops->enable_transfer ||
 714                        !dma->ops->flush_dma))
 715                 return -EINVAL;
 716 
 717         spin_lock(&chip->reg_lock);
 718         switch (cmd) {
 719         case SNDRV_PCM_TRIGGER_START:
 720         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 721         case SNDRV_PCM_TRIGGER_RESUME:
 722                 if (dma->running && dma->suspended &&
 723                     cmd == SNDRV_PCM_TRIGGER_RESUME)
 724                         writel(dma->saved_curptr, chip->remap_addr +
 725                                dma->ops->dt_cur);
 726                 dma->ops->enable_transfer(chip, 1);
 727                 dma->running = 1;
 728                 dma->suspended = 0;
 729                 break;
 730         case SNDRV_PCM_TRIGGER_STOP:
 731         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 732         case SNDRV_PCM_TRIGGER_SUSPEND:
 733                 dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
 734                 if (dma->running && dma->suspended)
 735                         dma->saved_curptr = readl(chip->remap_addr +
 736                                                   dma->ops->dt_cur);
 737                 dma->ops->enable_transfer(chip, 0);
 738                 dma->running = 0;
 739                 break;
 740         default:
 741                 err = -EINVAL;
 742                 break;
 743         }
 744         if (! err) {
 745                 snd_atiixp_check_bus_busy(chip);
 746                 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 747                         dma->ops->flush_dma(chip);
 748                         snd_atiixp_check_bus_busy(chip);
 749                 }
 750         }
 751         spin_unlock(&chip->reg_lock);
 752         return err;
 753 }
 754 
 755 
 756 /*
 757  * lowlevel callbacks for each DMA type
 758  *
 759  * every callback is supposed to be called in chip->reg_lock spinlock
 760  */
 761 
 762 /* flush FIFO of analog OUT DMA */
 763 static void atiixp_out_flush_dma(struct atiixp *chip)
 764 {
 765         atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
 766 }
 767 
 768 /* enable/disable analog OUT DMA */
 769 static void atiixp_out_enable_dma(struct atiixp *chip, int on)
 770 {
 771         unsigned int data;
 772         data = atiixp_read(chip, CMD);
 773         if (on) {
 774                 if (data & ATI_REG_CMD_OUT_DMA_EN)
 775                         return;
 776                 atiixp_out_flush_dma(chip);
 777                 data |= ATI_REG_CMD_OUT_DMA_EN;
 778         } else
 779                 data &= ~ATI_REG_CMD_OUT_DMA_EN;
 780         atiixp_write(chip, CMD, data);
 781 }
 782 
 783 /* start/stop transfer over OUT DMA */
 784 static void atiixp_out_enable_transfer(struct atiixp *chip, int on)
 785 {
 786         atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
 787                       on ? ATI_REG_CMD_SEND_EN : 0);
 788 }
 789 
 790 /* enable/disable analog IN DMA */
 791 static void atiixp_in_enable_dma(struct atiixp *chip, int on)
 792 {
 793         atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
 794                       on ? ATI_REG_CMD_IN_DMA_EN : 0);
 795 }
 796 
 797 /* start/stop analog IN DMA */
 798 static void atiixp_in_enable_transfer(struct atiixp *chip, int on)
 799 {
 800         if (on) {
 801                 unsigned int data = atiixp_read(chip, CMD);
 802                 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
 803                         data |= ATI_REG_CMD_RECEIVE_EN;
 804 #if 0 /* FIXME: this causes the endless loop */
 805                         /* wait until slot 3/4 are finished */
 806                         while ((atiixp_read(chip, COUNTER) &
 807                                 ATI_REG_COUNTER_SLOT) != 5)
 808                                 ;
 809 #endif
 810                         atiixp_write(chip, CMD, data);
 811                 }
 812         } else
 813                 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
 814 }
 815 
 816 /* flush FIFO of analog IN DMA */
 817 static void atiixp_in_flush_dma(struct atiixp *chip)
 818 {
 819         atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
 820 }
 821 
 822 /* enable/disable SPDIF OUT DMA */
 823 static void atiixp_spdif_enable_dma(struct atiixp *chip, int on)
 824 {
 825         atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
 826                       on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
 827 }
 828 
 829 /* start/stop SPDIF OUT DMA */
 830 static void atiixp_spdif_enable_transfer(struct atiixp *chip, int on)
 831 {
 832         unsigned int data;
 833         data = atiixp_read(chip, CMD);
 834         if (on)
 835                 data |= ATI_REG_CMD_SPDF_OUT_EN;
 836         else
 837                 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
 838         atiixp_write(chip, CMD, data);
 839 }
 840 
 841 /* flush FIFO of SPDIF OUT DMA */
 842 static void atiixp_spdif_flush_dma(struct atiixp *chip)
 843 {
 844         int timeout;
 845 
 846         /* DMA off, transfer on */
 847         atiixp_spdif_enable_dma(chip, 0);
 848         atiixp_spdif_enable_transfer(chip, 1);
 849         
 850         timeout = 100;
 851         do {
 852                 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
 853                         break;
 854                 udelay(1);
 855         } while (timeout-- > 0);
 856 
 857         atiixp_spdif_enable_transfer(chip, 0);
 858 }
 859 
 860 /* set up slots and formats for SPDIF OUT */
 861 static int snd_atiixp_spdif_prepare(struct snd_pcm_substream *substream)
 862 {
 863         struct atiixp *chip = snd_pcm_substream_chip(substream);
 864 
 865         spin_lock_irq(&chip->reg_lock);
 866         if (chip->spdif_over_aclink) {
 867                 unsigned int data;
 868                 /* enable slots 10/11 */
 869                 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
 870                               ATI_REG_CMD_SPDF_CONFIG_01);
 871                 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
 872                 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
 873                         ATI_REG_OUT_DMA_SLOT_BIT(11);
 874                 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
 875                 atiixp_write(chip, OUT_DMA_SLOT, data);
 876                 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
 877                               substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
 878                               ATI_REG_CMD_INTERLEAVE_OUT : 0);
 879         } else {
 880                 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
 881                 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
 882         }
 883         spin_unlock_irq(&chip->reg_lock);
 884         return 0;
 885 }
 886 
 887 /* set up slots and formats for analog OUT */
 888 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
 889 {
 890         struct atiixp *chip = snd_pcm_substream_chip(substream);
 891         unsigned int data;
 892 
 893         spin_lock_irq(&chip->reg_lock);
 894         data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
 895         switch (substream->runtime->channels) {
 896         case 8:
 897                 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
 898                         ATI_REG_OUT_DMA_SLOT_BIT(11);
 899                 /* fall through */
 900         case 6:
 901                 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
 902                         ATI_REG_OUT_DMA_SLOT_BIT(8);
 903                 /* fall through */
 904         case 4:
 905                 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
 906                         ATI_REG_OUT_DMA_SLOT_BIT(9);
 907                 /* fall through */
 908         default:
 909                 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
 910                         ATI_REG_OUT_DMA_SLOT_BIT(4);
 911                 break;
 912         }
 913 
 914         /* set output threshold */
 915         data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
 916         atiixp_write(chip, OUT_DMA_SLOT, data);
 917 
 918         atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
 919                       substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
 920                       ATI_REG_CMD_INTERLEAVE_OUT : 0);
 921 
 922         /*
 923          * enable 6 channel re-ordering bit if needed
 924          */
 925         atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
 926                       substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
 927     
 928         spin_unlock_irq(&chip->reg_lock);
 929         return 0;
 930 }
 931 
 932 /* set up slots and formats for analog IN */
 933 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
 934 {
 935         struct atiixp *chip = snd_pcm_substream_chip(substream);
 936 
 937         spin_lock_irq(&chip->reg_lock);
 938         atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
 939                       substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
 940                       ATI_REG_CMD_INTERLEAVE_IN : 0);
 941         spin_unlock_irq(&chip->reg_lock);
 942         return 0;
 943 }
 944 
 945 /*
 946  * hw_params - allocate the buffer and set up buffer descriptors
 947  */
 948 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
 949                                     struct snd_pcm_hw_params *hw_params)
 950 {
 951         struct atiixp *chip = snd_pcm_substream_chip(substream);
 952         struct atiixp_dma *dma = substream->runtime->private_data;
 953         int err;
 954 
 955         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 956         if (err < 0)
 957                 return err;
 958         dma->buf_addr = substream->runtime->dma_addr;
 959         dma->buf_bytes = params_buffer_bytes(hw_params);
 960 
 961         err = atiixp_build_dma_packets(chip, dma, substream,
 962                                        params_periods(hw_params),
 963                                        params_period_bytes(hw_params));
 964         if (err < 0)
 965                 return err;
 966 
 967         if (dma->ac97_pcm_type >= 0) {
 968                 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
 969                 /* PCM is bound to AC97 codec(s)
 970                  * set up the AC97 codecs
 971                  */
 972                 if (dma->pcm_open_flag) {
 973                         snd_ac97_pcm_close(pcm);
 974                         dma->pcm_open_flag = 0;
 975                 }
 976                 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
 977                                         params_channels(hw_params),
 978                                         pcm->r[0].slots);
 979                 if (err >= 0)
 980                         dma->pcm_open_flag = 1;
 981         }
 982 
 983         return err;
 984 }
 985 
 986 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
 987 {
 988         struct atiixp *chip = snd_pcm_substream_chip(substream);
 989         struct atiixp_dma *dma = substream->runtime->private_data;
 990 
 991         if (dma->pcm_open_flag) {
 992                 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
 993                 snd_ac97_pcm_close(pcm);
 994                 dma->pcm_open_flag = 0;
 995         }
 996         atiixp_clear_dma_packets(chip, dma, substream);
 997         snd_pcm_lib_free_pages(substream);
 998         return 0;
 999 }
1000 
1001 
1002 /*
1003  * pcm hardware definition, identical for all DMA types
1004  */
1005 static const struct snd_pcm_hardware snd_atiixp_pcm_hw =
1006 {
1007         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1008                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1009                                  SNDRV_PCM_INFO_PAUSE |
1010                                  SNDRV_PCM_INFO_RESUME |
1011                                  SNDRV_PCM_INFO_MMAP_VALID),
1012         .formats =              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
1013         .rates =                SNDRV_PCM_RATE_48000,
1014         .rate_min =             48000,
1015         .rate_max =             48000,
1016         .channels_min =         2,
1017         .channels_max =         2,
1018         .buffer_bytes_max =     256 * 1024,
1019         .period_bytes_min =     32,
1020         .period_bytes_max =     128 * 1024,
1021         .periods_min =          2,
1022         .periods_max =          ATI_MAX_DESCRIPTORS,
1023 };
1024 
1025 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
1026                                struct atiixp_dma *dma, int pcm_type)
1027 {
1028         struct atiixp *chip = snd_pcm_substream_chip(substream);
1029         struct snd_pcm_runtime *runtime = substream->runtime;
1030         int err;
1031 
1032         if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1033                 return -EINVAL;
1034 
1035         if (dma->opened)
1036                 return -EBUSY;
1037         dma->substream = substream;
1038         runtime->hw = snd_atiixp_pcm_hw;
1039         dma->ac97_pcm_type = pcm_type;
1040         if (pcm_type >= 0) {
1041                 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1042                 snd_pcm_limit_hw_rates(runtime);
1043         } else {
1044                 /* direct SPDIF */
1045                 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1046         }
1047         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1048                 return err;
1049         runtime->private_data = dma;
1050 
1051         /* enable DMA bits */
1052         spin_lock_irq(&chip->reg_lock);
1053         dma->ops->enable_dma(chip, 1);
1054         spin_unlock_irq(&chip->reg_lock);
1055         dma->opened = 1;
1056 
1057         return 0;
1058 }
1059 
1060 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
1061                                 struct atiixp_dma *dma)
1062 {
1063         struct atiixp *chip = snd_pcm_substream_chip(substream);
1064         /* disable DMA bits */
1065         if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1066                 return -EINVAL;
1067         spin_lock_irq(&chip->reg_lock);
1068         dma->ops->enable_dma(chip, 0);
1069         spin_unlock_irq(&chip->reg_lock);
1070         dma->substream = NULL;
1071         dma->opened = 0;
1072         return 0;
1073 }
1074 
1075 /*
1076  */
1077 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
1078 {
1079         struct atiixp *chip = snd_pcm_substream_chip(substream);
1080         int err;
1081 
1082         mutex_lock(&chip->open_mutex);
1083         err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1084         mutex_unlock(&chip->open_mutex);
1085         if (err < 0)
1086                 return err;
1087         substream->runtime->hw.channels_max = chip->max_channels;
1088         if (chip->max_channels > 2)
1089                 /* channels must be even */
1090                 snd_pcm_hw_constraint_step(substream->runtime, 0,
1091                                            SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1092         return 0;
1093 }
1094 
1095 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
1096 {
1097         struct atiixp *chip = snd_pcm_substream_chip(substream);
1098         int err;
1099         mutex_lock(&chip->open_mutex);
1100         err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1101         mutex_unlock(&chip->open_mutex);
1102         return err;
1103 }
1104 
1105 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
1106 {
1107         struct atiixp *chip = snd_pcm_substream_chip(substream);
1108         return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1109 }
1110 
1111 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
1112 {
1113         struct atiixp *chip = snd_pcm_substream_chip(substream);
1114         return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1115 }
1116 
1117 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
1118 {
1119         struct atiixp *chip = snd_pcm_substream_chip(substream);
1120         int err;
1121         mutex_lock(&chip->open_mutex);
1122         if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1123                 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1124         else
1125                 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1126         mutex_unlock(&chip->open_mutex);
1127         return err;
1128 }
1129 
1130 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
1131 {
1132         struct atiixp *chip = snd_pcm_substream_chip(substream);
1133         int err;
1134         mutex_lock(&chip->open_mutex);
1135         if (chip->spdif_over_aclink)
1136                 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1137         else
1138                 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1139         mutex_unlock(&chip->open_mutex);
1140         return err;
1141 }
1142 
1143 /* AC97 playback */
1144 static const struct snd_pcm_ops snd_atiixp_playback_ops = {
1145         .open =         snd_atiixp_playback_open,
1146         .close =        snd_atiixp_playback_close,
1147         .ioctl =        snd_pcm_lib_ioctl,
1148         .hw_params =    snd_atiixp_pcm_hw_params,
1149         .hw_free =      snd_atiixp_pcm_hw_free,
1150         .prepare =      snd_atiixp_playback_prepare,
1151         .trigger =      snd_atiixp_pcm_trigger,
1152         .pointer =      snd_atiixp_pcm_pointer,
1153 };
1154 
1155 /* AC97 capture */
1156 static const struct snd_pcm_ops snd_atiixp_capture_ops = {
1157         .open =         snd_atiixp_capture_open,
1158         .close =        snd_atiixp_capture_close,
1159         .ioctl =        snd_pcm_lib_ioctl,
1160         .hw_params =    snd_atiixp_pcm_hw_params,
1161         .hw_free =      snd_atiixp_pcm_hw_free,
1162         .prepare =      snd_atiixp_capture_prepare,
1163         .trigger =      snd_atiixp_pcm_trigger,
1164         .pointer =      snd_atiixp_pcm_pointer,
1165 };
1166 
1167 /* SPDIF playback */
1168 static const struct snd_pcm_ops snd_atiixp_spdif_ops = {
1169         .open =         snd_atiixp_spdif_open,
1170         .close =        snd_atiixp_spdif_close,
1171         .ioctl =        snd_pcm_lib_ioctl,
1172         .hw_params =    snd_atiixp_pcm_hw_params,
1173         .hw_free =      snd_atiixp_pcm_hw_free,
1174         .prepare =      snd_atiixp_spdif_prepare,
1175         .trigger =      snd_atiixp_pcm_trigger,
1176         .pointer =      snd_atiixp_pcm_pointer,
1177 };
1178 
1179 static const struct ac97_pcm atiixp_pcm_defs[] = {
1180         /* front PCM */
1181         {
1182                 .exclusive = 1,
1183                 .r = {  {
1184                                 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1185                                          (1 << AC97_SLOT_PCM_RIGHT) |
1186                                          (1 << AC97_SLOT_PCM_CENTER) |
1187                                          (1 << AC97_SLOT_PCM_SLEFT) |
1188                                          (1 << AC97_SLOT_PCM_SRIGHT) |
1189                                          (1 << AC97_SLOT_LFE)
1190                         }
1191                 }
1192         },
1193         /* PCM IN #1 */
1194         {
1195                 .stream = 1,
1196                 .exclusive = 1,
1197                 .r = {  {
1198                                 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1199                                          (1 << AC97_SLOT_PCM_RIGHT)
1200                         }
1201                 }
1202         },
1203         /* S/PDIF OUT (optional) */
1204         {
1205                 .exclusive = 1,
1206                 .spdif = 1,
1207                 .r = {  {
1208                                 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1209                                          (1 << AC97_SLOT_SPDIF_RIGHT2)
1210                         }
1211                 }
1212         },
1213 };
1214 
1215 static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
1216         .type = ATI_DMA_PLAYBACK,
1217         .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1218         .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1219         .enable_dma = atiixp_out_enable_dma,
1220         .enable_transfer = atiixp_out_enable_transfer,
1221         .flush_dma = atiixp_out_flush_dma,
1222 };
1223         
1224 static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
1225         .type = ATI_DMA_CAPTURE,
1226         .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1227         .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1228         .enable_dma = atiixp_in_enable_dma,
1229         .enable_transfer = atiixp_in_enable_transfer,
1230         .flush_dma = atiixp_in_flush_dma,
1231 };
1232         
1233 static const struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
1234         .type = ATI_DMA_SPDIF,
1235         .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1236         .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1237         .enable_dma = atiixp_spdif_enable_dma,
1238         .enable_transfer = atiixp_spdif_enable_transfer,
1239         .flush_dma = atiixp_spdif_flush_dma,
1240 };
1241         
1242 
1243 static int snd_atiixp_pcm_new(struct atiixp *chip)
1244 {
1245         struct snd_pcm *pcm;
1246         struct snd_pcm_chmap *chmap;
1247         struct snd_ac97_bus *pbus = chip->ac97_bus;
1248         int err, i, num_pcms;
1249 
1250         /* initialize constants */
1251         chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1252         chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1253         if (! chip->spdif_over_aclink)
1254                 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1255 
1256         /* assign AC97 pcm */
1257         if (chip->spdif_over_aclink)
1258                 num_pcms = 3;
1259         else
1260                 num_pcms = 2;
1261         err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1262         if (err < 0)
1263                 return err;
1264         for (i = 0; i < num_pcms; i++)
1265                 chip->pcms[i] = &pbus->pcms[i];
1266 
1267         chip->max_channels = 2;
1268         if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1269                 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1270                         chip->max_channels = 6;
1271                 else
1272                         chip->max_channels = 4;
1273         }
1274 
1275         /* PCM #0: analog I/O */
1276         err = snd_pcm_new(chip->card, "ATI IXP AC97",
1277                           ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1278         if (err < 0)
1279                 return err;
1280         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1281         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1282         pcm->private_data = chip;
1283         strcpy(pcm->name, "ATI IXP AC97");
1284         chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1285 
1286         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1287                                               snd_dma_pci_data(chip->pci),
1288                                               64*1024, 128*1024);
1289 
1290         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1291                                      snd_pcm_alt_chmaps, chip->max_channels, 0,
1292                                      &chmap);
1293         if (err < 0)
1294                 return err;
1295         chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
1296         chip->ac97[0]->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1297 
1298         /* no SPDIF support on codec? */
1299         if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1300                 return 0;
1301                 
1302         /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1303         if (chip->pcms[ATI_PCM_SPDIF])
1304                 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1305 
1306         /* PCM #1: spdif playback */
1307         err = snd_pcm_new(chip->card, "ATI IXP IEC958",
1308                           ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1309         if (err < 0)
1310                 return err;
1311         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1312         pcm->private_data = chip;
1313         if (chip->spdif_over_aclink)
1314                 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1315         else
1316                 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1317         chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1318 
1319         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1320                                               snd_dma_pci_data(chip->pci),
1321                                               64*1024, 128*1024);
1322 
1323         /* pre-select AC97 SPDIF slots 10/11 */
1324         for (i = 0; i < NUM_ATI_CODECS; i++) {
1325                 if (chip->ac97[i])
1326                         snd_ac97_update_bits(chip->ac97[i],
1327                                              AC97_EXTENDED_STATUS,
1328                                              0x03 << 4, 0x03 << 4);
1329         }
1330 
1331         return 0;
1332 }
1333 
1334 
1335 
1336 /*
1337  * interrupt handler
1338  */
1339 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
1340 {
1341         struct atiixp *chip = dev_id;
1342         unsigned int status;
1343 
1344         status = atiixp_read(chip, ISR);
1345 
1346         if (! status)
1347                 return IRQ_NONE;
1348 
1349         /* process audio DMA */
1350         if (status & ATI_REG_ISR_OUT_XRUN)
1351                 snd_atiixp_xrun_dma(chip,  &chip->dmas[ATI_DMA_PLAYBACK]);
1352         else if (status & ATI_REG_ISR_OUT_STATUS)
1353                 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1354         if (status & ATI_REG_ISR_IN_XRUN)
1355                 snd_atiixp_xrun_dma(chip,  &chip->dmas[ATI_DMA_CAPTURE]);
1356         else if (status & ATI_REG_ISR_IN_STATUS)
1357                 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1358         if (! chip->spdif_over_aclink) {
1359                 if (status & ATI_REG_ISR_SPDF_XRUN)
1360                         snd_atiixp_xrun_dma(chip,  &chip->dmas[ATI_DMA_SPDIF]);
1361                 else if (status & ATI_REG_ISR_SPDF_STATUS)
1362                         snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1363         }
1364 
1365         /* for codec detection */
1366         if (status & CODEC_CHECK_BITS) {
1367                 unsigned int detected;
1368                 detected = status & CODEC_CHECK_BITS;
1369                 spin_lock(&chip->reg_lock);
1370                 chip->codec_not_ready_bits |= detected;
1371                 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1372                 spin_unlock(&chip->reg_lock);
1373         }
1374 
1375         /* ack */
1376         atiixp_write(chip, ISR, status);
1377 
1378         return IRQ_HANDLED;
1379 }
1380 
1381 
1382 /*
1383  * ac97 mixer section
1384  */
1385 
1386 static const struct ac97_quirk ac97_quirks[] = {
1387         {
1388                 .subvendor = 0x103c,
1389                 .subdevice = 0x006b,
1390                 .name = "HP Pavilion ZV5030US",
1391                 .type = AC97_TUNE_MUTE_LED
1392         },
1393         {
1394                 .subvendor = 0x103c,
1395                 .subdevice = 0x308b,
1396                 .name = "HP nx6125",
1397                 .type = AC97_TUNE_MUTE_LED
1398         },
1399         {
1400                 .subvendor = 0x103c,
1401                 .subdevice = 0x3091,
1402                 .name = "unknown HP",
1403                 .type = AC97_TUNE_MUTE_LED
1404         },
1405         { } /* terminator */
1406 };
1407 
1408 static int snd_atiixp_mixer_new(struct atiixp *chip, int clock,
1409                                 const char *quirk_override)
1410 {
1411         struct snd_ac97_bus *pbus;
1412         struct snd_ac97_template ac97;
1413         int i, err;
1414         int codec_count;
1415         static struct snd_ac97_bus_ops ops = {
1416                 .write = snd_atiixp_ac97_write,
1417                 .read = snd_atiixp_ac97_read,
1418         };
1419         static unsigned int codec_skip[NUM_ATI_CODECS] = {
1420                 ATI_REG_ISR_CODEC0_NOT_READY,
1421                 ATI_REG_ISR_CODEC1_NOT_READY,
1422                 ATI_REG_ISR_CODEC2_NOT_READY,
1423         };
1424 
1425         if (snd_atiixp_codec_detect(chip) < 0)
1426                 return -ENXIO;
1427 
1428         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1429                 return err;
1430         pbus->clock = clock;
1431         chip->ac97_bus = pbus;
1432 
1433         codec_count = 0;
1434         for (i = 0; i < NUM_ATI_CODECS; i++) {
1435                 if (chip->codec_not_ready_bits & codec_skip[i])
1436                         continue;
1437                 memset(&ac97, 0, sizeof(ac97));
1438                 ac97.private_data = chip;
1439                 ac97.pci = chip->pci;
1440                 ac97.num = i;
1441                 ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1442                 if (! chip->spdif_over_aclink)
1443                         ac97.scaps |= AC97_SCAP_NO_SPDIF;
1444                 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1445                         chip->ac97[i] = NULL; /* to be sure */
1446                         dev_dbg(chip->card->dev,
1447                                 "codec %d not available for audio\n", i);
1448                         continue;
1449                 }
1450                 codec_count++;
1451         }
1452 
1453         if (! codec_count) {
1454                 dev_err(chip->card->dev, "no codec available\n");
1455                 return -ENODEV;
1456         }
1457 
1458         snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1459 
1460         return 0;
1461 }
1462 
1463 
1464 #ifdef CONFIG_PM_SLEEP
1465 /*
1466  * power management
1467  */
1468 static int snd_atiixp_suspend(struct device *dev)
1469 {
1470         struct snd_card *card = dev_get_drvdata(dev);
1471         struct atiixp *chip = card->private_data;
1472         int i;
1473 
1474         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1475         for (i = 0; i < NUM_ATI_CODECS; i++)
1476                 snd_ac97_suspend(chip->ac97[i]);
1477         snd_atiixp_aclink_down(chip);
1478         snd_atiixp_chip_stop(chip);
1479         return 0;
1480 }
1481 
1482 static int snd_atiixp_resume(struct device *dev)
1483 {
1484         struct snd_card *card = dev_get_drvdata(dev);
1485         struct atiixp *chip = card->private_data;
1486         int i;
1487 
1488         snd_atiixp_aclink_reset(chip);
1489         snd_atiixp_chip_start(chip);
1490 
1491         for (i = 0; i < NUM_ATI_CODECS; i++)
1492                 snd_ac97_resume(chip->ac97[i]);
1493 
1494         for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1495                 if (chip->pcmdevs[i]) {
1496                         struct atiixp_dma *dma = &chip->dmas[i];
1497                         if (dma->substream && dma->suspended) {
1498                                 dma->ops->enable_dma(chip, 1);
1499                                 dma->substream->ops->prepare(dma->substream);
1500                                 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1501                                        chip->remap_addr + dma->ops->llp_offset);
1502                         }
1503                 }
1504 
1505         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1506         return 0;
1507 }
1508 
1509 static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume);
1510 #define SND_ATIIXP_PM_OPS       &snd_atiixp_pm
1511 #else
1512 #define SND_ATIIXP_PM_OPS       NULL
1513 #endif /* CONFIG_PM_SLEEP */
1514 
1515 
1516 /*
1517  * proc interface for register dump
1518  */
1519 
1520 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1521                                  struct snd_info_buffer *buffer)
1522 {
1523         struct atiixp *chip = entry->private_data;
1524         int i;
1525 
1526         for (i = 0; i < 256; i += 4)
1527                 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1528 }
1529 
1530 static void snd_atiixp_proc_init(struct atiixp *chip)
1531 {
1532         snd_card_ro_proc_new(chip->card, "atiixp", chip, snd_atiixp_proc_read);
1533 }
1534 
1535 
1536 /*
1537  * destructor
1538  */
1539 
1540 static int snd_atiixp_free(struct atiixp *chip)
1541 {
1542         if (chip->irq < 0)
1543                 goto __hw_end;
1544         snd_atiixp_chip_stop(chip);
1545 
1546       __hw_end:
1547         if (chip->irq >= 0)
1548                 free_irq(chip->irq, chip);
1549         iounmap(chip->remap_addr);
1550         pci_release_regions(chip->pci);
1551         pci_disable_device(chip->pci);
1552         kfree(chip);
1553         return 0;
1554 }
1555 
1556 static int snd_atiixp_dev_free(struct snd_device *device)
1557 {
1558         struct atiixp *chip = device->device_data;
1559         return snd_atiixp_free(chip);
1560 }
1561 
1562 /*
1563  * constructor for chip instance
1564  */
1565 static int snd_atiixp_create(struct snd_card *card,
1566                              struct pci_dev *pci,
1567                              struct atiixp **r_chip)
1568 {
1569         static struct snd_device_ops ops = {
1570                 .dev_free =     snd_atiixp_dev_free,
1571         };
1572         struct atiixp *chip;
1573         int err;
1574 
1575         if ((err = pci_enable_device(pci)) < 0)
1576                 return err;
1577 
1578         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1579         if (chip == NULL) {
1580                 pci_disable_device(pci);
1581                 return -ENOMEM;
1582         }
1583 
1584         spin_lock_init(&chip->reg_lock);
1585         mutex_init(&chip->open_mutex);
1586         chip->card = card;
1587         chip->pci = pci;
1588         chip->irq = -1;
1589         if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1590                 pci_disable_device(pci);
1591                 kfree(chip);
1592                 return err;
1593         }
1594         chip->addr = pci_resource_start(pci, 0);
1595         chip->remap_addr = pci_ioremap_bar(pci, 0);
1596         if (chip->remap_addr == NULL) {
1597                 dev_err(card->dev, "AC'97 space ioremap problem\n");
1598                 snd_atiixp_free(chip);
1599                 return -EIO;
1600         }
1601 
1602         if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
1603                         KBUILD_MODNAME, chip)) {
1604                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1605                 snd_atiixp_free(chip);
1606                 return -EBUSY;
1607         }
1608         chip->irq = pci->irq;
1609         pci_set_master(pci);
1610         synchronize_irq(chip->irq);
1611 
1612         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1613                 snd_atiixp_free(chip);
1614                 return err;
1615         }
1616 
1617         *r_chip = chip;
1618         return 0;
1619 }
1620 
1621 
1622 static int snd_atiixp_probe(struct pci_dev *pci,
1623                             const struct pci_device_id *pci_id)
1624 {
1625         struct snd_card *card;
1626         struct atiixp *chip;
1627         int err;
1628 
1629         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1630         if (err < 0)
1631                 return err;
1632 
1633         strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
1634         strcpy(card->shortname, "ATI IXP");
1635         if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1636                 goto __error;
1637         card->private_data = chip;
1638 
1639         if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1640                 goto __error;
1641 
1642         chip->spdif_over_aclink = spdif_aclink;
1643 
1644         if ((err = snd_atiixp_mixer_new(chip, ac97_clock, ac97_quirk)) < 0)
1645                 goto __error;
1646 
1647         if ((err = snd_atiixp_pcm_new(chip)) < 0)
1648                 goto __error;
1649         
1650         snd_atiixp_proc_init(chip);
1651 
1652         snd_atiixp_chip_start(chip);
1653 
1654         snprintf(card->longname, sizeof(card->longname),
1655                  "%s rev %x with %s at %#lx, irq %i", card->shortname,
1656                  pci->revision,
1657                  chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1658                  chip->addr, chip->irq);
1659 
1660         if ((err = snd_card_register(card)) < 0)
1661                 goto __error;
1662 
1663         pci_set_drvdata(pci, card);
1664         return 0;
1665 
1666  __error:
1667         snd_card_free(card);
1668         return err;
1669 }
1670 
1671 static void snd_atiixp_remove(struct pci_dev *pci)
1672 {
1673         snd_card_free(pci_get_drvdata(pci));
1674 }
1675 
1676 static struct pci_driver atiixp_driver = {
1677         .name = KBUILD_MODNAME,
1678         .id_table = snd_atiixp_ids,
1679         .probe = snd_atiixp_probe,
1680         .remove = snd_atiixp_remove,
1681         .driver = {
1682                 .pm = SND_ATIIXP_PM_OPS,
1683         },
1684 };
1685 
1686 module_pci_driver(atiixp_driver);
/* [<][>][^][v][top][bottom][index][help] */
root/sound/pci/atiixp.c

DEFINITIONS
