sound/pci/als300.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
0004  *  Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
0005  *
0006  *  TODO
0007  *  4 channel playback for ALS300+
0008  *  gameport
0009  *  mpu401
0010  *  opl3
0011  *
0012  *  NOTES
0013  *  The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
0014  *  the position in the current period, NOT the whole buffer. It is important
0015  *  to know which period we are in so we can calculate the correct pointer.
0016  *  This is why we always use 2 periods. We can then use a flip-flop variable
0017  *  to keep track of what period we are in.
0018  */
0019
0020 #include <linux/delay.h>
0021 #include <linux/init.h>
0022 #include <linux/module.h>
0023 #include <linux/pci.h>
0024 #include <linux/dma-mapping.h>
0025 #include <linux/interrupt.h>
0026 #include <linux/slab.h>
0027 #include <linux/io.h>
0028
0029 #include <sound/core.h>
0030 #include <sound/control.h>
0031 #include <sound/initval.h>
0032 #include <sound/pcm.h>
0033 #include <sound/pcm_params.h>
0034 #include <sound/ac97_codec.h>
0035 #include <sound/opl3.h>
0036
0037 /* snd_als300_set_irq_flag */
0038 #define IRQ_DISABLE     0
0039 #define IRQ_ENABLE      1
0040
0041 /* I/O port layout */
0042 #define AC97_ACCESS     0x00
0043 #define AC97_READ       0x04
0044 #define AC97_STATUS     0x06
0045 #define   AC97_DATA_AVAIL       (1<<6)
0046 #define   AC97_BUSY         (1<<7)
0047 #define ALS300_IRQ_STATUS   0x07        /* ALS300 Only */
0048 #define   IRQ_PLAYBACK          (1<<3)
0049 #define   IRQ_CAPTURE           (1<<2)
0050 #define GCR_DATA        0x08
0051 #define GCR_INDEX       0x0C
0052 #define ALS300P_DRAM_IRQ_STATUS 0x0D        /* ALS300+ Only */
0053 #define MPU_IRQ_STATUS      0x0E        /* ALS300 Rev. E+, ALS300+ */
0054 #define ALS300P_IRQ_STATUS  0x0F        /* ALS300+ Only */
0055
0056 /* General Control Registers */
0057 #define PLAYBACK_START      0x80
0058 #define PLAYBACK_END        0x81
0059 #define PLAYBACK_CONTROL    0x82
0060 #define   TRANSFER_START        (1<<16)
0061 #define   FIFO_PAUSE            (1<<17)
0062 #define RECORD_START        0x83
0063 #define RECORD_END      0x84
0064 #define RECORD_CONTROL      0x85
0065 #define DRAM_WRITE_CONTROL  0x8B
0066 #define   WRITE_TRANS_START     (1<<16)
0067 #define   DRAM_MODE_2           (1<<17)
0068 #define MISC_CONTROL        0x8C
0069 #define   IRQ_SET_BIT           (1<<15)
0070 #define   VMUTE_NORMAL          (1<<20)
0071 #define   MMUTE_NORMAL          (1<<21)
0072 #define MUS_VOC_VOL     0x8E
0073 #define PLAYBACK_BLOCK_COUNTER  0x9A
0074 #define RECORD_BLOCK_COUNTER    0x9B
0075
0076 #define DEBUG_PLAY_REC  0
0077
0078 #if DEBUG_PLAY_REC
0079 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
0080 #else
0081 #define snd_als300_dbgplay(format, args...)
0082 #endif
0083
0084 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
0085
0086 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
0087 MODULE_DESCRIPTION("Avance Logic ALS300");
0088 MODULE_LICENSE("GPL");
0089
0090 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
0091 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
0092 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
0093
0094 module_param_array(index, int, NULL, 0444);
0095 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
0096 module_param_array(id, charp, NULL, 0444);
0097 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
0098 module_param_array(enable, bool, NULL, 0444);
0099 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
0100
0101 struct snd_als300 {
0102     unsigned long port;
0103     spinlock_t reg_lock;
0104     struct snd_card *card;
0105     struct pci_dev *pci;
0106
0107     struct snd_pcm *pcm;
0108     struct snd_pcm_substream *playback_substream;
0109     struct snd_pcm_substream *capture_substream;
0110
0111     struct snd_ac97 *ac97;
0112     struct snd_opl3 *opl3;
0113
0114     struct resource *res_port;
0115
0116     int irq;
0117
0118     int chip_type; /* ALS300 or ALS300+ */
0119
0120     char revision;
0121 };
0122
0123 struct snd_als300_substream_data {
0124     int period_flipflop;
0125     int control_register;
0126     int block_counter_register;
0127 };
0128
0129 static const struct pci_device_id snd_als300_ids[] = {
0130     { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
0131     { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
0132     { 0, }
0133 };
0134
0135 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
0136
0137 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
0138 {
0139     outb(reg, port+GCR_INDEX);
0140     return inl(port+GCR_DATA);
0141 }
0142
0143 static inline void snd_als300_gcr_write(unsigned long port,
0144                         unsigned short reg, u32 val)
0145 {
0146     outb(reg, port+GCR_INDEX);
0147     outl(val, port+GCR_DATA);
0148 }
0149
0150 /* Enable/Disable Interrupts */
0151 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
0152 {
0153     u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
0154
0155     /* boolean XOR check, since old vs. new hardware have
0156        directly reversed bit setting for ENABLE and DISABLE.
0157        ALS300+ acts like newer versions of ALS300 */
0158     if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
0159                         (cmd == IRQ_ENABLE)) == 0)
0160         tmp |= IRQ_SET_BIT;
0161     else
0162         tmp &= ~IRQ_SET_BIT;
0163     snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
0164 }
0165
0166 static void snd_als300_free(struct snd_card *card)
0167 {
0168     struct snd_als300 *chip = card->private_data;
0169
0170     snd_als300_set_irq_flag(chip, IRQ_DISABLE);
0171 }
0172
0173 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
0174 {
0175     u8 status;
0176     struct snd_als300 *chip = dev_id;
0177     struct snd_als300_substream_data *data;
0178
0179     status = inb(chip->port+ALS300_IRQ_STATUS);
0180     if (!status) /* shared IRQ, for different device?? Exit ASAP! */
0181         return IRQ_NONE;
0182
0183     /* ACK everything ASAP */
0184     outb(status, chip->port+ALS300_IRQ_STATUS);
0185     if (status & IRQ_PLAYBACK) {
0186         if (chip->pcm && chip->playback_substream) {
0187             data = chip->playback_substream->runtime->private_data;
0188             data->period_flipflop ^= 1;
0189             snd_pcm_period_elapsed(chip->playback_substream);
0190             snd_als300_dbgplay("IRQ_PLAYBACK\n");
0191         }
0192     }
0193     if (status & IRQ_CAPTURE) {
0194         if (chip->pcm && chip->capture_substream) {
0195             data = chip->capture_substream->runtime->private_data;
0196             data->period_flipflop ^= 1;
0197             snd_pcm_period_elapsed(chip->capture_substream);
0198             snd_als300_dbgplay("IRQ_CAPTURE\n");
0199         }
0200     }
0201     return IRQ_HANDLED;
0202 }
0203
0204 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
0205 {
0206     u8 general, mpu, dram;
0207     struct snd_als300 *chip = dev_id;
0208     struct snd_als300_substream_data *data;
0209
0210     general = inb(chip->port+ALS300P_IRQ_STATUS);
0211     mpu = inb(chip->port+MPU_IRQ_STATUS);
0212     dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
0213
0214     /* shared IRQ, for different device?? Exit ASAP! */
0215     if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
0216         return IRQ_NONE;
0217
0218     if (general & IRQ_PLAYBACK) {
0219         if (chip->pcm && chip->playback_substream) {
0220             outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
0221             data = chip->playback_substream->runtime->private_data;
0222             data->period_flipflop ^= 1;
0223             snd_pcm_period_elapsed(chip->playback_substream);
0224             snd_als300_dbgplay("IRQ_PLAYBACK\n");
0225         }
0226     }
0227     if (general & IRQ_CAPTURE) {
0228         if (chip->pcm && chip->capture_substream) {
0229             outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
0230             data = chip->capture_substream->runtime->private_data;
0231             data->period_flipflop ^= 1;
0232             snd_pcm_period_elapsed(chip->capture_substream);
0233             snd_als300_dbgplay("IRQ_CAPTURE\n");
0234         }
0235     }
0236     /* FIXME: Ack other interrupt types. Not important right now as
0237      * those other devices aren't enabled. */
0238     return IRQ_HANDLED;
0239 }
0240
0241 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
0242                             unsigned short reg)
0243 {
0244     int i;
0245     struct snd_als300 *chip = ac97->private_data;
0246
0247     for (i = 0; i < 1000; i++) {
0248         if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
0249             break;
0250         udelay(10);
0251     }
0252     outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
0253
0254     for (i = 0; i < 1000; i++) {
0255         if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
0256             break;
0257         udelay(10);
0258     }
0259     return inw(chip->port+AC97_READ);
0260 }
0261
0262 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
0263                 unsigned short reg, unsigned short val)
0264 {
0265     int i;
0266     struct snd_als300 *chip = ac97->private_data;
0267
0268     for (i = 0; i < 1000; i++) {
0269         if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
0270             break;
0271         udelay(10);
0272     }
0273     outl((reg << 24) | val, chip->port+AC97_ACCESS);
0274 }
0275
0276 static int snd_als300_ac97(struct snd_als300 *chip)
0277 {
0278     struct snd_ac97_bus *bus;
0279     struct snd_ac97_template ac97;
0280     int err;
0281     static const struct snd_ac97_bus_ops ops = {
0282         .write = snd_als300_ac97_write,
0283         .read = snd_als300_ac97_read,
0284     };
0285
0286     err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
0287     if (err < 0)
0288         return err;
0289
0290     memset(&ac97, 0, sizeof(ac97));
0291     ac97.private_data = chip;
0292
0293     return snd_ac97_mixer(bus, &ac97, &chip->ac97);
0294 }
0295
0296 /* hardware definition
0297  *
0298  * In AC97 mode, we always use 48k/16bit/stereo.
0299  * Any request to change data type is ignored by
0300  * the card when it is running outside of legacy
0301  * mode.
0302  */
0303 static const struct snd_pcm_hardware snd_als300_playback_hw =
0304 {
0305     .info =         (SNDRV_PCM_INFO_MMAP |
0306                 SNDRV_PCM_INFO_INTERLEAVED |
0307                 SNDRV_PCM_INFO_PAUSE |
0308                 SNDRV_PCM_INFO_MMAP_VALID),
0309     .formats =      SNDRV_PCM_FMTBIT_S16,
0310     .rates =        SNDRV_PCM_RATE_48000,
0311     .rate_min =     48000,
0312     .rate_max =     48000,
0313     .channels_min =     2,
0314     .channels_max =     2,
0315     .buffer_bytes_max = 64 * 1024,
0316     .period_bytes_min = 64,
0317     .period_bytes_max = 32 * 1024,
0318     .periods_min =      2,
0319     .periods_max =      2,
0320 };
0321
0322 static const struct snd_pcm_hardware snd_als300_capture_hw =
0323 {
0324     .info =         (SNDRV_PCM_INFO_MMAP |
0325                 SNDRV_PCM_INFO_INTERLEAVED |
0326                 SNDRV_PCM_INFO_PAUSE |
0327                 SNDRV_PCM_INFO_MMAP_VALID),
0328     .formats =      SNDRV_PCM_FMTBIT_S16,
0329     .rates =        SNDRV_PCM_RATE_48000,
0330     .rate_min =     48000,
0331     .rate_max =     48000,
0332     .channels_min =     2,
0333     .channels_max =     2,
0334     .buffer_bytes_max = 64 * 1024,
0335     .period_bytes_min = 64,
0336     .period_bytes_max = 32 * 1024,
0337     .periods_min =      2,
0338     .periods_max =      2,
0339 };
0340
0341 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
0342 {
0343     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0344     struct snd_pcm_runtime *runtime = substream->runtime;
0345     struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
0346                                 GFP_KERNEL);
0347
0348     if (!data)
0349         return -ENOMEM;
0350     chip->playback_substream = substream;
0351     runtime->hw = snd_als300_playback_hw;
0352     runtime->private_data = data;
0353     data->control_register = PLAYBACK_CONTROL;
0354     data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
0355     return 0;
0356 }
0357
0358 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
0359 {
0360     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0361     struct snd_als300_substream_data *data;
0362
0363     data = substream->runtime->private_data;
0364     kfree(data);
0365     chip->playback_substream = NULL;
0366     return 0;
0367 }
0368
0369 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
0370 {
0371     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0372     struct snd_pcm_runtime *runtime = substream->runtime;
0373     struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
0374                                 GFP_KERNEL);
0375
0376     if (!data)
0377         return -ENOMEM;
0378     chip->capture_substream = substream;
0379     runtime->hw = snd_als300_capture_hw;
0380     runtime->private_data = data;
0381     data->control_register = RECORD_CONTROL;
0382     data->block_counter_register = RECORD_BLOCK_COUNTER;
0383     return 0;
0384 }
0385
0386 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
0387 {
0388     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0389     struct snd_als300_substream_data *data;
0390
0391     data = substream->runtime->private_data;
0392     kfree(data);
0393     chip->capture_substream = NULL;
0394     return 0;
0395 }
0396
0397 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
0398 {
0399     u32 tmp;
0400     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0401     struct snd_pcm_runtime *runtime = substream->runtime;
0402     unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
0403     unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
0404
0405     spin_lock_irq(&chip->reg_lock);
0406     tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
0407     tmp &= ~TRANSFER_START;
0408
0409     snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
0410                         period_bytes, buffer_bytes);
0411
0412     /* set block size */
0413     tmp &= 0xffff0000;
0414     tmp |= period_bytes - 1;
0415     snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
0416
0417     /* set dma area */
0418     snd_als300_gcr_write(chip->port, PLAYBACK_START,
0419                     runtime->dma_addr);
0420     snd_als300_gcr_write(chip->port, PLAYBACK_END,
0421                     runtime->dma_addr + buffer_bytes - 1);
0422     spin_unlock_irq(&chip->reg_lock);
0423     return 0;
0424 }
0425
0426 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
0427 {
0428     u32 tmp;
0429     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0430     struct snd_pcm_runtime *runtime = substream->runtime;
0431     unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
0432     unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
0433
0434     spin_lock_irq(&chip->reg_lock);
0435     tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
0436     tmp &= ~TRANSFER_START;
0437
0438     snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
0439                             buffer_bytes);
0440
0441     /* set block size */
0442     tmp &= 0xffff0000;
0443     tmp |= period_bytes - 1;
0444
0445     /* set dma area */
0446     snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
0447     snd_als300_gcr_write(chip->port, RECORD_START,
0448                     runtime->dma_addr);
0449     snd_als300_gcr_write(chip->port, RECORD_END,
0450                     runtime->dma_addr + buffer_bytes - 1);
0451     spin_unlock_irq(&chip->reg_lock);
0452     return 0;
0453 }
0454
0455 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
0456 {
0457     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0458     u32 tmp;
0459     struct snd_als300_substream_data *data;
0460     unsigned short reg;
0461     int ret = 0;
0462
0463     data = substream->runtime->private_data;
0464     reg = data->control_register;
0465
0466     spin_lock(&chip->reg_lock);
0467     switch (cmd) {
0468     case SNDRV_PCM_TRIGGER_START:
0469     case SNDRV_PCM_TRIGGER_RESUME:
0470         tmp = snd_als300_gcr_read(chip->port, reg);
0471         data->period_flipflop = 1;
0472         snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
0473         snd_als300_dbgplay("TRIGGER START\n");
0474         break;
0475     case SNDRV_PCM_TRIGGER_STOP:
0476     case SNDRV_PCM_TRIGGER_SUSPEND:
0477         tmp = snd_als300_gcr_read(chip->port, reg);
0478         snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
0479         snd_als300_dbgplay("TRIGGER STOP\n");
0480         break;
0481     case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
0482         tmp = snd_als300_gcr_read(chip->port, reg);
0483         snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
0484         snd_als300_dbgplay("TRIGGER PAUSE\n");
0485         break;
0486     case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
0487         tmp = snd_als300_gcr_read(chip->port, reg);
0488         snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
0489         snd_als300_dbgplay("TRIGGER RELEASE\n");
0490         break;
0491     default:
0492         snd_als300_dbgplay("TRIGGER INVALID\n");
0493         ret = -EINVAL;
0494     }
0495     spin_unlock(&chip->reg_lock);
0496     return ret;
0497 }
0498
0499 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
0500 {
0501     u16 current_ptr;
0502     struct snd_als300 *chip = snd_pcm_substream_chip(substream);
0503     struct snd_als300_substream_data *data;
0504     unsigned short period_bytes;
0505
0506     data = substream->runtime->private_data;
0507     period_bytes = snd_pcm_lib_period_bytes(substream);
0508
0509     spin_lock(&chip->reg_lock);
0510     current_ptr = (u16) snd_als300_gcr_read(chip->port,
0511                     data->block_counter_register) + 4;
0512     spin_unlock(&chip->reg_lock);
0513     if (current_ptr > period_bytes)
0514         current_ptr = 0;
0515     else
0516         current_ptr = period_bytes - current_ptr;
0517
0518     if (data->period_flipflop == 0)
0519         current_ptr += period_bytes;
0520     snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
0521     return bytes_to_frames(substream->runtime, current_ptr);
0522 }
0523
0524 static const struct snd_pcm_ops snd_als300_playback_ops = {
0525     .open =     snd_als300_playback_open,
0526     .close =    snd_als300_playback_close,
0527     .prepare =  snd_als300_playback_prepare,
0528     .trigger =  snd_als300_trigger,
0529     .pointer =  snd_als300_pointer,
0530 };
0531
0532 static const struct snd_pcm_ops snd_als300_capture_ops = {
0533     .open =     snd_als300_capture_open,
0534     .close =    snd_als300_capture_close,
0535     .prepare =  snd_als300_capture_prepare,
0536     .trigger =  snd_als300_trigger,
0537     .pointer =  snd_als300_pointer,
0538 };
0539
0540 static int snd_als300_new_pcm(struct snd_als300 *chip)
0541 {
0542     struct snd_pcm *pcm;
0543     int err;
0544
0545     err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
0546     if (err < 0)
0547         return err;
0548     pcm->private_data = chip;
0549     strcpy(pcm->name, "ALS300");
0550     chip->pcm = pcm;
0551
0552     /* set operators */
0553     snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
0554                 &snd_als300_playback_ops);
0555     snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
0556                 &snd_als300_capture_ops);
0557
0558     /* pre-allocation of buffers */
0559     snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
0560                        64*1024, 64*1024);
0561     return 0;
0562 }
0563
0564 static void snd_als300_init(struct snd_als300 *chip)
0565 {
0566     unsigned long flags;
0567     u32 tmp;
0568
0569     spin_lock_irqsave(&chip->reg_lock, flags);
0570     chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
0571                                 & 0x0000000F;
0572     /* Setup DRAM */
0573     tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
0574     snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
0575                         (tmp | DRAM_MODE_2)
0576                         & ~WRITE_TRANS_START);
0577
0578     /* Enable IRQ output */
0579     snd_als300_set_irq_flag(chip, IRQ_ENABLE);
0580
0581     /* Unmute hardware devices so their outputs get routed to
0582      * the onboard mixer */
0583     tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
0584     snd_als300_gcr_write(chip->port, MISC_CONTROL,
0585             tmp | VMUTE_NORMAL | MMUTE_NORMAL);
0586
0587     /* Reset volumes */
0588     snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
0589
0590     /* Make sure playback transfer is stopped */
0591     tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
0592     snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
0593             tmp & ~TRANSFER_START);
0594     spin_unlock_irqrestore(&chip->reg_lock, flags);
0595 }
0596
0597 static int snd_als300_create(struct snd_card *card,
0598                  struct pci_dev *pci, int chip_type)
0599 {
0600     struct snd_als300 *chip = card->private_data;
0601     void *irq_handler;
0602     int err;
0603
0604     err = pcim_enable_device(pci);
0605     if (err < 0)
0606         return err;
0607
0608     if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
0609         dev_err(card->dev, "error setting 28bit DMA mask\n");
0610         return -ENXIO;
0611     }
0612     pci_set_master(pci);
0613
0614     chip->card = card;
0615     chip->pci = pci;
0616     chip->irq = -1;
0617     chip->chip_type = chip_type;
0618     spin_lock_init(&chip->reg_lock);
0619
0620     err = pci_request_regions(pci, "ALS300");
0621     if (err < 0)
0622         return err;
0623
0624     chip->port = pci_resource_start(pci, 0);
0625
0626     if (chip->chip_type == DEVICE_ALS300_PLUS)
0627         irq_handler = snd_als300plus_interrupt;
0628     else
0629         irq_handler = snd_als300_interrupt;
0630
0631     if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,
0632                  KBUILD_MODNAME, chip)) {
0633         dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
0634         return -EBUSY;
0635     }
0636     chip->irq = pci->irq;
0637     card->sync_irq = chip->irq;
0638     card->private_free = snd_als300_free;
0639
0640     snd_als300_init(chip);
0641
0642     err = snd_als300_ac97(chip);
0643     if (err < 0) {
0644         dev_err(card->dev, "Could not create ac97\n");
0645         return err;
0646     }
0647
0648     err = snd_als300_new_pcm(chip);
0649     if (err < 0) {
0650         dev_err(card->dev, "Could not create PCM\n");
0651         return err;
0652     }
0653
0654     return 0;
0655 }
0656
0657 #ifdef CONFIG_PM_SLEEP
0658 static int snd_als300_suspend(struct device *dev)
0659 {
0660     struct snd_card *card = dev_get_drvdata(dev);
0661     struct snd_als300 *chip = card->private_data;
0662
0663     snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
0664     snd_ac97_suspend(chip->ac97);
0665     return 0;
0666 }
0667
0668 static int snd_als300_resume(struct device *dev)
0669 {
0670     struct snd_card *card = dev_get_drvdata(dev);
0671     struct snd_als300 *chip = card->private_data;
0672
0673     snd_als300_init(chip);
0674     snd_ac97_resume(chip->ac97);
0675
0676     snd_power_change_state(card, SNDRV_CTL_POWER_D0);
0677     return 0;
0678 }
0679
0680 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
0681 #define SND_ALS300_PM_OPS   &snd_als300_pm
0682 #else
0683 #define SND_ALS300_PM_OPS   NULL
0684 #endif
0685
0686 static int snd_als300_probe(struct pci_dev *pci,
0687                              const struct pci_device_id *pci_id)
0688 {
0689     static int dev;
0690     struct snd_card *card;
0691     struct snd_als300 *chip;
0692     int err, chip_type;
0693
0694     if (dev >= SNDRV_CARDS)
0695         return -ENODEV;
0696     if (!enable[dev]) {
0697         dev++;
0698         return -ENOENT;
0699     }
0700
0701     err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
0702                 sizeof(*chip), &card);
0703     if (err < 0)
0704         return err;
0705     chip = card->private_data;
0706
0707     chip_type = pci_id->driver_data;
0708
0709     err = snd_als300_create(card, pci, chip_type);
0710     if (err < 0)
0711         goto error;
0712
0713     strcpy(card->driver, "ALS300");
0714     if (chip->chip_type == DEVICE_ALS300_PLUS)
0715         /* don't know much about ALS300+ yet
0716          * print revision number for now */
0717         sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
0718     else
0719         sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
0720                             chip->revision - 1);
0721     sprintf(card->longname, "%s at 0x%lx irq %i",
0722                 card->shortname, chip->port, chip->irq);
0723
0724     err = snd_card_register(card);
0725     if (err < 0)
0726         goto error;
0727
0728     pci_set_drvdata(pci, card);
0729     dev++;
0730     return 0;
0731
0732  error:
0733     snd_card_free(card);
0734     return err;
0735 }
0736
0737 static struct pci_driver als300_driver = {
0738     .name = KBUILD_MODNAME,
0739     .id_table = snd_als300_ids,
0740     .probe = snd_als300_probe,
0741     .driver = {
0742         .pm = SND_ALS300_PM_OPS,
0743     },
0744 };
0745
0746 module_pci_driver(als300_driver);