fm801.c

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/*
 *  The driver for the ForteMedia FM801 based soundcards
 *  Copyright (c) by Jaroslav Kysela <[email protected]>
 *
 *  Support FM only card by Andy Shevchenko <[email protected]>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/tlv.h>
#include <sound/ac97_codec.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/initval.h>

#include <asm/io.h>

#ifdef CONFIG_SND_FM801_TEA575X_BOOL
#include <sound/tea575x-tuner.h>
#endif

MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
MODULE_DESCRIPTION("ForteMedia FM801");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{ForteMedia,FM801},"
        "{Genius,SoundMaker Live 5.1}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;  /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;   /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
/*
 *  Enable TEA575x tuner
 *    1 = MediaForte 256-PCS
 *    2 = MediaForte 256-PCP
 *    3 = MediaForte 64-PCR
 *   16 = setup tuner only (this is additional bit), i.e. SF64-PCR FM card
 *  High 16-bits are video (radio) device number + 1
 */
static int tea575x_tuner[SNDRV_CARDS];
static int radio_nr[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for the FM801 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for the FM801 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable FM801 soundcard.");
module_param_array(tea575x_tuner, int, NULL, 0444);
MODULE_PARM_DESC(tea575x_tuner, "TEA575x tuner access method (0 = auto, 1 = SF256-PCS, 2=SF256-PCP, 3=SF64-PCR, 8=disable, +16=tuner-only).");
module_param_array(radio_nr, int, NULL, 0444);
MODULE_PARM_DESC(radio_nr, "Radio device numbers");


#define TUNER_DISABLED      (1<<3)
#define TUNER_ONLY      (1<<4)
#define TUNER_TYPE_MASK     (~TUNER_ONLY & 0xFFFF)

/*
 *  Direct registers
 */

#define FM801_REG(chip, reg)    (chip->port + FM801_##reg)

#define FM801_PCM_VOL       0x00    /* PCM Output Volume */
#define FM801_FM_VOL        0x02    /* FM Output Volume */
#define FM801_I2S_VOL       0x04    /* I2S Volume */
#define FM801_REC_SRC       0x06    /* Record Source */
#define FM801_PLY_CTRL      0x08    /* Playback Control */
#define FM801_PLY_COUNT     0x0a    /* Playback Count */
#define FM801_PLY_BUF1      0x0c    /* Playback Bufer I */
#define FM801_PLY_BUF2      0x10    /* Playback Buffer II */
#define FM801_CAP_CTRL      0x14    /* Capture Control */
#define FM801_CAP_COUNT     0x16    /* Capture Count */
#define FM801_CAP_BUF1      0x18    /* Capture Buffer I */
#define FM801_CAP_BUF2      0x1c    /* Capture Buffer II */
#define FM801_CODEC_CTRL    0x22    /* Codec Control */
#define FM801_I2S_MODE      0x24    /* I2S Mode Control */
#define FM801_VOLUME        0x26    /* Volume Up/Down/Mute Status */
#define FM801_I2C_CTRL      0x29    /* I2C Control */
#define FM801_AC97_CMD      0x2a    /* AC'97 Command */
#define FM801_AC97_DATA     0x2c    /* AC'97 Data */
#define FM801_MPU401_DATA   0x30    /* MPU401 Data */
#define FM801_MPU401_CMD    0x31    /* MPU401 Command */
#define FM801_GPIO_CTRL     0x52    /* General Purpose I/O Control */
#define FM801_GEN_CTRL      0x54    /* General Control */
#define FM801_IRQ_MASK      0x56    /* Interrupt Mask */
#define FM801_IRQ_STATUS    0x5a    /* Interrupt Status */
#define FM801_OPL3_BANK0    0x68    /* OPL3 Status Read / Bank 0 Write */
#define FM801_OPL3_DATA0    0x69    /* OPL3 Data 0 Write */
#define FM801_OPL3_BANK1    0x6a    /* OPL3 Bank 1 Write */
#define FM801_OPL3_DATA1    0x6b    /* OPL3 Bank 1 Write */
#define FM801_POWERDOWN     0x70    /* Blocks Power Down Control */

/* codec access */
#define FM801_AC97_READ     (1<<7)  /* read=1, write=0 */
#define FM801_AC97_VALID    (1<<8)  /* port valid=1 */
#define FM801_AC97_BUSY     (1<<9)  /* busy=1 */
#define FM801_AC97_ADDR_SHIFT   10  /* codec id (2bit) */

/* playback and record control register bits */
#define FM801_BUF1_LAST     (1<<1)
#define FM801_BUF2_LAST     (1<<2)
#define FM801_START     (1<<5)
#define FM801_PAUSE     (1<<6)
#define FM801_IMMED_STOP    (1<<7)
#define FM801_RATE_SHIFT    8
#define FM801_RATE_MASK     (15 << FM801_RATE_SHIFT)
#define FM801_CHANNELS_4    (1<<12) /* playback only */
#define FM801_CHANNELS_6    (2<<12) /* playback only */
#define FM801_CHANNELS_6MS  (3<<12) /* playback only */
#define FM801_CHANNELS_MASK (3<<12)
#define FM801_16BIT     (1<<14)
#define FM801_STEREO        (1<<15)

/* IRQ status bits */
#define FM801_IRQ_PLAYBACK  (1<<8)
#define FM801_IRQ_CAPTURE   (1<<9)
#define FM801_IRQ_VOLUME    (1<<14)
#define FM801_IRQ_MPU       (1<<15)

/* GPIO control register */
#define FM801_GPIO_GP0      (1<<0)  /* read/write */
#define FM801_GPIO_GP1      (1<<1)
#define FM801_GPIO_GP2      (1<<2)
#define FM801_GPIO_GP3      (1<<3)
#define FM801_GPIO_GP(x)    (1<<(0+(x)))
#define FM801_GPIO_GD0      (1<<8)  /* directions: 1 = input, 0 = output*/
#define FM801_GPIO_GD1      (1<<9)
#define FM801_GPIO_GD2      (1<<10)
#define FM801_GPIO_GD3      (1<<11)
#define FM801_GPIO_GD(x)    (1<<(8+(x)))
#define FM801_GPIO_GS0      (1<<12) /* function select: */
#define FM801_GPIO_GS1      (1<<13) /*    1 = GPIO */
#define FM801_GPIO_GS2      (1<<14) /*    0 = other (S/PDIF, VOL) */
#define FM801_GPIO_GS3      (1<<15)
#define FM801_GPIO_GS(x)    (1<<(12+(x)))
    
/*

 */

struct fm801 {
    int irq;

    unsigned long port; /* I/O port number */
    unsigned int multichannel: 1,   /* multichannel support */
             secondary: 1;  /* secondary codec */
    unsigned char secondary_addr;   /* address of the secondary codec */
    unsigned int tea575x_tuner; /* tuner access method & flags */

    unsigned short ply_ctrl; /* playback control */
    unsigned short cap_ctrl; /* capture control */

    unsigned long ply_buffer;
    unsigned int ply_buf;
    unsigned int ply_count;
    unsigned int ply_size;
    unsigned int ply_pos;

    unsigned long cap_buffer;
    unsigned int cap_buf;
    unsigned int cap_count;
    unsigned int cap_size;
    unsigned int cap_pos;

    struct snd_ac97_bus *ac97_bus;
    struct snd_ac97 *ac97;
    struct snd_ac97 *ac97_sec;

    struct pci_dev *pci;
    struct snd_card *card;
    struct snd_pcm *pcm;
    struct snd_rawmidi *rmidi;
    struct snd_pcm_substream *playback_substream;
    struct snd_pcm_substream *capture_substream;
    unsigned int p_dma_size;
    unsigned int c_dma_size;

    spinlock_t reg_lock;
    struct snd_info_entry *proc_entry;

#ifdef CONFIG_SND_FM801_TEA575X_BOOL
    struct v4l2_device v4l2_dev;
    struct snd_tea575x tea;
#endif

#ifdef CONFIG_PM_SLEEP
    u16 saved_regs[0x20];
#endif
};

static DEFINE_PCI_DEVICE_TABLE(snd_fm801_ids) = {
    { 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* FM801 */
    { 0x5213, 0x0510, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* Gallant Odyssey Sound 4 */
    { 0, }
};

MODULE_DEVICE_TABLE(pci, snd_fm801_ids);

/*
 *  common I/O routines
 */

static int snd_fm801_update_bits(struct fm801 *chip, unsigned short reg,
                 unsigned short mask, unsigned short value)
{
    int change;
    unsigned long flags;
    unsigned short old, new;

    spin_lock_irqsave(&chip->reg_lock, flags);
    old = inw(chip->port + reg);
    new = (old & ~mask) | value;
    change = old != new;
    if (change)
        outw(new, chip->port + reg);
    spin_unlock_irqrestore(&chip->reg_lock, flags);
    return change;
}

static void snd_fm801_codec_write(struct snd_ac97 *ac97,
                  unsigned short reg,
                  unsigned short val)
{
    struct fm801 *chip = ac97->private_data;
    int idx;

    /*
     *  Wait until the codec interface is not ready..
     */
    for (idx = 0; idx < 100; idx++) {
        if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
            goto ok1;
        udelay(10);
    }
    snd_printk(KERN_ERR "AC'97 interface is busy (1)\n");
    return;

 ok1:
    /* write data and address */
    outw(val, FM801_REG(chip, AC97_DATA));
    outw(reg | (ac97->addr << FM801_AC97_ADDR_SHIFT), FM801_REG(chip, AC97_CMD));
    /*
     *  Wait until the write command is not completed..
         */
    for (idx = 0; idx < 1000; idx++) {
        if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
            return;
        udelay(10);
    }
    snd_printk(KERN_ERR "AC'97 interface #%d is busy (2)\n", ac97->num);
}

static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short reg)
{
    struct fm801 *chip = ac97->private_data;
    int idx;

    /*
     *  Wait until the codec interface is not ready..
     */
    for (idx = 0; idx < 100; idx++) {
        if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
            goto ok1;
        udelay(10);
    }
    snd_printk(KERN_ERR "AC'97 interface is busy (1)\n");
    return 0;

 ok1:
    /* read command */
    outw(reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ,
         FM801_REG(chip, AC97_CMD));
    for (idx = 0; idx < 100; idx++) {
        if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
            goto ok2;
        udelay(10);
    }
    snd_printk(KERN_ERR "AC'97 interface #%d is busy (2)\n", ac97->num);
    return 0;

 ok2:
    for (idx = 0; idx < 1000; idx++) {
        if (inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_VALID)
            goto ok3;
        udelay(10);
    }
    snd_printk(KERN_ERR "AC'97 interface #%d is not valid (2)\n", ac97->num);
    return 0;

 ok3:
    return inw(FM801_REG(chip, AC97_DATA));
}

static unsigned int rates[] = {
  5500,  8000,  9600, 11025,
  16000, 19200, 22050, 32000,
  38400, 44100, 48000
};

static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
    .count = ARRAY_SIZE(rates),
    .list = rates,
    .mask = 0,
};

static unsigned int channels[] = {
  2, 4, 6
};

static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
    .count = ARRAY_SIZE(channels),
    .list = channels,
    .mask = 0,
};

/*
 *  Sample rate routines
 */

static unsigned short snd_fm801_rate_bits(unsigned int rate)
{
    unsigned int idx;

    for (idx = 0; idx < ARRAY_SIZE(rates); idx++)
        if (rates[idx] == rate)
            return idx;
    snd_BUG();
    return ARRAY_SIZE(rates) - 1;
}

/*
 *  PCM part
 */

static int snd_fm801_playback_trigger(struct snd_pcm_substream *substream,
                      int cmd)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);

    spin_lock(&chip->reg_lock);
    switch (cmd) {
    case SNDRV_PCM_TRIGGER_START:
        chip->ply_ctrl &= ~(FM801_BUF1_LAST |
                     FM801_BUF2_LAST |
                     FM801_PAUSE);
        chip->ply_ctrl |= FM801_START |
                   FM801_IMMED_STOP;
        break;
    case SNDRV_PCM_TRIGGER_STOP:
        chip->ply_ctrl &= ~(FM801_START | FM801_PAUSE);
        break;
    case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
    case SNDRV_PCM_TRIGGER_SUSPEND:
        chip->ply_ctrl |= FM801_PAUSE;
        break;
    case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
    case SNDRV_PCM_TRIGGER_RESUME:
        chip->ply_ctrl &= ~FM801_PAUSE;
        break;
    default:
        spin_unlock(&chip->reg_lock);
        snd_BUG();
        return -EINVAL;
    }
    outw(chip->ply_ctrl, FM801_REG(chip, PLY_CTRL));
    spin_unlock(&chip->reg_lock);
    return 0;
}

static int snd_fm801_capture_trigger(struct snd_pcm_substream *substream,
                     int cmd)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);

    spin_lock(&chip->reg_lock);
    switch (cmd) {
    case SNDRV_PCM_TRIGGER_START:
        chip->cap_ctrl &= ~(FM801_BUF1_LAST |
                     FM801_BUF2_LAST |
                     FM801_PAUSE);
        chip->cap_ctrl |= FM801_START |
                   FM801_IMMED_STOP;
        break;
    case SNDRV_PCM_TRIGGER_STOP:
        chip->cap_ctrl &= ~(FM801_START | FM801_PAUSE);
        break;
    case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
    case SNDRV_PCM_TRIGGER_SUSPEND:
        chip->cap_ctrl |= FM801_PAUSE;
        break;
    case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
    case SNDRV_PCM_TRIGGER_RESUME:
        chip->cap_ctrl &= ~FM801_PAUSE;
        break;
    default:
        spin_unlock(&chip->reg_lock);
        snd_BUG();
        return -EINVAL;
    }
    outw(chip->cap_ctrl, FM801_REG(chip, CAP_CTRL));
    spin_unlock(&chip->reg_lock);
    return 0;
}

static int snd_fm801_hw_params(struct snd_pcm_substream *substream,
                   struct snd_pcm_hw_params *hw_params)
{
    return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}

static int snd_fm801_hw_free(struct snd_pcm_substream *substream)
{
    return snd_pcm_lib_free_pages(substream);
}

static int snd_fm801_playback_prepare(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;

    chip->ply_size = snd_pcm_lib_buffer_bytes(substream);
    chip->ply_count = snd_pcm_lib_period_bytes(substream);
    spin_lock_irq(&chip->reg_lock);
    chip->ply_ctrl &= ~(FM801_START | FM801_16BIT |
                 FM801_STEREO | FM801_RATE_MASK |
                 FM801_CHANNELS_MASK);
    if (snd_pcm_format_width(runtime->format) == 16)
        chip->ply_ctrl |= FM801_16BIT;
    if (runtime->channels > 1) {
        chip->ply_ctrl |= FM801_STEREO;
        if (runtime->channels == 4)
            chip->ply_ctrl |= FM801_CHANNELS_4;
        else if (runtime->channels == 6)
            chip->ply_ctrl |= FM801_CHANNELS_6;
    }
    chip->ply_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
    chip->ply_buf = 0;
    outw(chip->ply_ctrl, FM801_REG(chip, PLY_CTRL));
    outw(chip->ply_count - 1, FM801_REG(chip, PLY_COUNT));
    chip->ply_buffer = runtime->dma_addr;
    chip->ply_pos = 0;
    outl(chip->ply_buffer, FM801_REG(chip, PLY_BUF1));
    outl(chip->ply_buffer + (chip->ply_count % chip->ply_size), FM801_REG(chip, PLY_BUF2));
    spin_unlock_irq(&chip->reg_lock);
    return 0;
}

static int snd_fm801_capture_prepare(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;

    chip->cap_size = snd_pcm_lib_buffer_bytes(substream);
    chip->cap_count = snd_pcm_lib_period_bytes(substream);
    spin_lock_irq(&chip->reg_lock);
    chip->cap_ctrl &= ~(FM801_START | FM801_16BIT |
                 FM801_STEREO | FM801_RATE_MASK);
    if (snd_pcm_format_width(runtime->format) == 16)
        chip->cap_ctrl |= FM801_16BIT;
    if (runtime->channels > 1)
        chip->cap_ctrl |= FM801_STEREO;
    chip->cap_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
    chip->cap_buf = 0;
    outw(chip->cap_ctrl, FM801_REG(chip, CAP_CTRL));
    outw(chip->cap_count - 1, FM801_REG(chip, CAP_COUNT));
    chip->cap_buffer = runtime->dma_addr;
    chip->cap_pos = 0;
    outl(chip->cap_buffer, FM801_REG(chip, CAP_BUF1));
    outl(chip->cap_buffer + (chip->cap_count % chip->cap_size), FM801_REG(chip, CAP_BUF2));
    spin_unlock_irq(&chip->reg_lock);
    return 0;
}

static snd_pcm_uframes_t snd_fm801_playback_pointer(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);
    size_t ptr;

    if (!(chip->ply_ctrl & FM801_START))
        return 0;
    spin_lock(&chip->reg_lock);
    ptr = chip->ply_pos + (chip->ply_count - 1) - inw(FM801_REG(chip, PLY_COUNT));
    if (inw(FM801_REG(chip, IRQ_STATUS)) & FM801_IRQ_PLAYBACK) {
        ptr += chip->ply_count;
        ptr %= chip->ply_size;
    }
    spin_unlock(&chip->reg_lock);
    return bytes_to_frames(substream->runtime, ptr);
}

static snd_pcm_uframes_t snd_fm801_capture_pointer(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);
    size_t ptr;

    if (!(chip->cap_ctrl & FM801_START))
        return 0;
    spin_lock(&chip->reg_lock);
    ptr = chip->cap_pos + (chip->cap_count - 1) - inw(FM801_REG(chip, CAP_COUNT));
    if (inw(FM801_REG(chip, IRQ_STATUS)) & FM801_IRQ_CAPTURE) {
        ptr += chip->cap_count;
        ptr %= chip->cap_size;
    }
    spin_unlock(&chip->reg_lock);
    return bytes_to_frames(substream->runtime, ptr);
}

static irqreturn_t snd_fm801_interrupt(int irq, void *dev_id)
{
    struct fm801 *chip = dev_id;
    unsigned short status;
    unsigned int tmp;

    status = inw(FM801_REG(chip, IRQ_STATUS));
    status &= FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU|FM801_IRQ_VOLUME;
    if (! status)
        return IRQ_NONE;
    /* ack first */
    outw(status, FM801_REG(chip, IRQ_STATUS));
    if (chip->pcm && (status & FM801_IRQ_PLAYBACK) && chip->playback_substream) {
        spin_lock(&chip->reg_lock);
        chip->ply_buf++;
        chip->ply_pos += chip->ply_count;
        chip->ply_pos %= chip->ply_size;
        tmp = chip->ply_pos + chip->ply_count;
        tmp %= chip->ply_size;
        outl(chip->ply_buffer + tmp,
                (chip->ply_buf & 1) ?
                    FM801_REG(chip, PLY_BUF1) :
                    FM801_REG(chip, PLY_BUF2));
        spin_unlock(&chip->reg_lock);
        snd_pcm_period_elapsed(chip->playback_substream);
    }
    if (chip->pcm && (status & FM801_IRQ_CAPTURE) && chip->capture_substream) {
        spin_lock(&chip->reg_lock);
        chip->cap_buf++;
        chip->cap_pos += chip->cap_count;
        chip->cap_pos %= chip->cap_size;
        tmp = chip->cap_pos + chip->cap_count;
        tmp %= chip->cap_size;
        outl(chip->cap_buffer + tmp,
                (chip->cap_buf & 1) ?
                    FM801_REG(chip, CAP_BUF1) :
                    FM801_REG(chip, CAP_BUF2));
        spin_unlock(&chip->reg_lock);
        snd_pcm_period_elapsed(chip->capture_substream);
    }
    if (chip->rmidi && (status & FM801_IRQ_MPU))
        snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
    if (status & FM801_IRQ_VOLUME)
        ;/* TODO */

    return IRQ_HANDLED;
}

static struct snd_pcm_hardware snd_fm801_playback =
{
    .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
                 SNDRV_PCM_INFO_MMAP_VALID),
    .formats =      SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
    .rates =        SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
    .rate_min =     5500,
    .rate_max =     48000,
    .channels_min =     1,
    .channels_max =     2,
    .buffer_bytes_max = (128*1024),
    .period_bytes_min = 64,
    .period_bytes_max = (128*1024),
    .periods_min =      1,
    .periods_max =      1024,
    .fifo_size =        0,
};

static struct snd_pcm_hardware snd_fm801_capture =
{
    .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
                 SNDRV_PCM_INFO_MMAP_VALID),
    .formats =      SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
    .rates =        SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
    .rate_min =     5500,
    .rate_max =     48000,
    .channels_min =     1,
    .channels_max =     2,
    .buffer_bytes_max = (128*1024),
    .period_bytes_min = 64,
    .period_bytes_max = (128*1024),
    .periods_min =      1,
    .periods_max =      1024,
    .fifo_size =        0,
};

static int snd_fm801_playback_open(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;
    int err;

    chip->playback_substream = substream;
    runtime->hw = snd_fm801_playback;
    snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                   &hw_constraints_rates);
    if (chip->multichannel) {
        runtime->hw.channels_max = 6;
        snd_pcm_hw_constraint_list(runtime, 0,
                       SNDRV_PCM_HW_PARAM_CHANNELS,
                       &hw_constraints_channels);
    }
    if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
        return err;
    return 0;
}

static int snd_fm801_capture_open(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;
    int err;

    chip->capture_substream = substream;
    runtime->hw = snd_fm801_capture;
    snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                   &hw_constraints_rates);
    if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
        return err;
    return 0;
}

static int snd_fm801_playback_close(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);

    chip->playback_substream = NULL;
    return 0;
}

static int snd_fm801_capture_close(struct snd_pcm_substream *substream)
{
    struct fm801 *chip = snd_pcm_substream_chip(substream);

    chip->capture_substream = NULL;
    return 0;
}

static struct snd_pcm_ops snd_fm801_playback_ops = {
    .open =     snd_fm801_playback_open,
    .close =    snd_fm801_playback_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_fm801_hw_params,
    .hw_free =  snd_fm801_hw_free,
    .prepare =  snd_fm801_playback_prepare,
    .trigger =  snd_fm801_playback_trigger,
    .pointer =  snd_fm801_playback_pointer,
};

static struct snd_pcm_ops snd_fm801_capture_ops = {
    .open =     snd_fm801_capture_open,
    .close =    snd_fm801_capture_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_fm801_hw_params,
    .hw_free =  snd_fm801_hw_free,
    .prepare =  snd_fm801_capture_prepare,
    .trigger =  snd_fm801_capture_trigger,
    .pointer =  snd_fm801_capture_pointer,
};

static int __devinit snd_fm801_pcm(struct fm801 *chip, int device, struct snd_pcm ** rpcm)
{
    struct snd_pcm *pcm;
    int err;

    if (rpcm)
        *rpcm = NULL;
    if ((err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm)) < 0)
        return err;

    snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_fm801_playback_ops);
    snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_fm801_capture_ops);

    pcm->private_data = chip;
    pcm->info_flags = 0;
    strcpy(pcm->name, "FM801");
    chip->pcm = pcm;

    snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                          snd_dma_pci_data(chip->pci),
                          chip->multichannel ? 128*1024 : 64*1024, 128*1024);

    err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
                     snd_pcm_alt_chmaps,
                     chip->multichannel ? 6 : 2, 0,
                     NULL);
    if (err < 0)
        return err;

    if (rpcm)
        *rpcm = pcm;
    return 0;
}

/*
 *  TEA5757 radio
 */

#ifdef CONFIG_SND_FM801_TEA575X_BOOL

/* GPIO to TEA575x maps */
struct snd_fm801_tea575x_gpio {
    u8 data, clk, wren, most;
    char *name;
};

static struct snd_fm801_tea575x_gpio snd_fm801_tea575x_gpios[] = {
    { .data = 1, .clk = 3, .wren = 2, .most = 0, .name = "SF256-PCS" },
    { .data = 1, .clk = 0, .wren = 2, .most = 3, .name = "SF256-PCP" },
    { .data = 2, .clk = 0, .wren = 1, .most = 3, .name = "SF64-PCR" },
};

#define get_tea575x_gpio(chip) \
    (&snd_fm801_tea575x_gpios[((chip)->tea575x_tuner & TUNER_TYPE_MASK) - 1])

static void snd_fm801_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
{
    struct fm801 *chip = tea->private_data;
    unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
    struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);

    reg &= ~(FM801_GPIO_GP(gpio.data) |
         FM801_GPIO_GP(gpio.clk) |
         FM801_GPIO_GP(gpio.wren));

    reg |= (pins & TEA575X_DATA) ? FM801_GPIO_GP(gpio.data) : 0;
    reg |= (pins & TEA575X_CLK)  ? FM801_GPIO_GP(gpio.clk) : 0;
    /* WRITE_ENABLE is inverted */
    reg |= (pins & TEA575X_WREN) ? 0 : FM801_GPIO_GP(gpio.wren);

    outw(reg, FM801_REG(chip, GPIO_CTRL));
}

static u8 snd_fm801_tea575x_get_pins(struct snd_tea575x *tea)
{
    struct fm801 *chip = tea->private_data;
    unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
    struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
    u8 ret;

    ret = 0;
    if (reg & FM801_GPIO_GP(gpio.data))
        ret |= TEA575X_DATA;
    if (reg & FM801_GPIO_GP(gpio.most))
        ret |= TEA575X_MOST;
    return ret;
}

static void snd_fm801_tea575x_set_direction(struct snd_tea575x *tea, bool output)
{
    struct fm801 *chip = tea->private_data;
    unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
    struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);

    /* use GPIO lines and set write enable bit */
    reg |= FM801_GPIO_GS(gpio.data) |
           FM801_GPIO_GS(gpio.wren) |
           FM801_GPIO_GS(gpio.clk) |
           FM801_GPIO_GS(gpio.most);
    if (output) {
        /* all of lines are in the write direction */
        /* clear data and clock lines */
        reg &= ~(FM801_GPIO_GD(gpio.data) |
             FM801_GPIO_GD(gpio.wren) |
             FM801_GPIO_GD(gpio.clk) |
             FM801_GPIO_GP(gpio.data) |
             FM801_GPIO_GP(gpio.clk) |
             FM801_GPIO_GP(gpio.wren));
    } else {
        /* use GPIO lines, set data direction to input */
        reg |= FM801_GPIO_GD(gpio.data) |
               FM801_GPIO_GD(gpio.most) |
               FM801_GPIO_GP(gpio.data) |
               FM801_GPIO_GP(gpio.most) |
               FM801_GPIO_GP(gpio.wren);
        /* all of lines are in the write direction, except data */
        /* clear data, write enable and clock lines */
        reg &= ~(FM801_GPIO_GD(gpio.wren) |
             FM801_GPIO_GD(gpio.clk) |
             FM801_GPIO_GP(gpio.clk));
    }

    outw(reg, FM801_REG(chip, GPIO_CTRL));
}

static struct snd_tea575x_ops snd_fm801_tea_ops = {
    .set_pins = snd_fm801_tea575x_set_pins,
    .get_pins = snd_fm801_tea575x_get_pins,
    .set_direction = snd_fm801_tea575x_set_direction,
};
#endif

/*
 *  Mixer routines
 */

#define FM801_SINGLE(xname, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_single, \
  .get = snd_fm801_get_single, .put = snd_fm801_put_single, \
  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }

static int snd_fm801_info_single(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_info *uinfo)
{
    int mask = (kcontrol->private_value >> 16) & 0xff;

    uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
    uinfo->count = 1;
    uinfo->value.integer.min = 0;
    uinfo->value.integer.max = mask;
    return 0;
}

static int snd_fm801_get_single(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol)
{
    struct fm801 *chip = snd_kcontrol_chip(kcontrol);
    int reg = kcontrol->private_value & 0xff;
    int shift = (kcontrol->private_value >> 8) & 0xff;
    int mask = (kcontrol->private_value >> 16) & 0xff;
    int invert = (kcontrol->private_value >> 24) & 0xff;

    ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift) & mask;
    if (invert)
        ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
    return 0;
}

static int snd_fm801_put_single(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol)
{
    struct fm801 *chip = snd_kcontrol_chip(kcontrol);
    int reg = kcontrol->private_value & 0xff;
    int shift = (kcontrol->private_value >> 8) & 0xff;
    int mask = (kcontrol->private_value >> 16) & 0xff;
    int invert = (kcontrol->private_value >> 24) & 0xff;
    unsigned short val;

    val = (ucontrol->value.integer.value[0] & mask);
    if (invert)
        val = mask - val;
    return snd_fm801_update_bits(chip, reg, mask << shift, val << shift);
}

#define FM801_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_double, \
  .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
#define FM801_DOUBLE_TLV(xname, reg, shift_left, shift_right, mask, invert, xtlv) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
  .name = xname, .info = snd_fm801_info_double, \
  .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
  .tlv = { .p = (xtlv) } }

static int snd_fm801_info_double(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_info *uinfo)
{
    int mask = (kcontrol->private_value >> 16) & 0xff;

    uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
    uinfo->count = 2;
    uinfo->value.integer.min = 0;
    uinfo->value.integer.max = mask;
    return 0;
}

static int snd_fm801_get_double(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol)
{
    struct fm801 *chip = snd_kcontrol_chip(kcontrol);
        int reg = kcontrol->private_value & 0xff;
    int shift_left = (kcontrol->private_value >> 8) & 0x0f;
    int shift_right = (kcontrol->private_value >> 12) & 0x0f;
    int mask = (kcontrol->private_value >> 16) & 0xff;
    int invert = (kcontrol->private_value >> 24) & 0xff;

    spin_lock_irq(&chip->reg_lock);
    ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift_left) & mask;
    ucontrol->value.integer.value[1] = (inw(chip->port + reg) >> shift_right) & mask;
    spin_unlock_irq(&chip->reg_lock);
    if (invert) {
        ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
        ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
    }
    return 0;
}

static int snd_fm801_put_double(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol)
{
    struct fm801 *chip = snd_kcontrol_chip(kcontrol);
    int reg = kcontrol->private_value & 0xff;
    int shift_left = (kcontrol->private_value >> 8) & 0x0f;
    int shift_right = (kcontrol->private_value >> 12) & 0x0f;
    int mask = (kcontrol->private_value >> 16) & 0xff;
    int invert = (kcontrol->private_value >> 24) & 0xff;
    unsigned short val1, val2;
 
    val1 = ucontrol->value.integer.value[0] & mask;
    val2 = ucontrol->value.integer.value[1] & mask;
    if (invert) {
        val1 = mask - val1;
        val2 = mask - val2;
    }
    return snd_fm801_update_bits(chip, reg,
                     (mask << shift_left) | (mask << shift_right),
                     (val1 << shift_left ) | (val2 << shift_right));
}

static int snd_fm801_info_mux(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_info *uinfo)
{
    static char *texts[5] = {
        "AC97 Primary", "FM", "I2S", "PCM", "AC97 Secondary"
    };
 
    uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
    uinfo->count = 1;
    uinfo->value.enumerated.items = 5;
    if (uinfo->value.enumerated.item > 4)
        uinfo->value.enumerated.item = 4;
    strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
    return 0;
}

static int snd_fm801_get_mux(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct fm801 *chip = snd_kcontrol_chip(kcontrol);
        unsigned short val;
 
    val = inw(FM801_REG(chip, REC_SRC)) & 7;
    if (val > 4)
        val = 4;
        ucontrol->value.enumerated.item[0] = val;
        return 0;
}

static int snd_fm801_put_mux(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct fm801 *chip = snd_kcontrol_chip(kcontrol);
        unsigned short val;
 
        if ((val = ucontrol->value.enumerated.item[0]) > 4)
                return -EINVAL;
    return snd_fm801_update_bits(chip, FM801_REC_SRC, 7, val);
}

static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -3450, 150, 0);

#define FM801_CONTROLS ARRAY_SIZE(snd_fm801_controls)

static struct snd_kcontrol_new snd_fm801_controls[] __devinitdata = {
FM801_DOUBLE_TLV("Wave Playback Volume", FM801_PCM_VOL, 0, 8, 31, 1,
         db_scale_dsp),
FM801_SINGLE("Wave Playback Switch", FM801_PCM_VOL, 15, 1, 1),
FM801_DOUBLE_TLV("I2S Playback Volume", FM801_I2S_VOL, 0, 8, 31, 1,
         db_scale_dsp),
FM801_SINGLE("I2S Playback Switch", FM801_I2S_VOL, 15, 1, 1),
FM801_DOUBLE_TLV("FM Playback Volume", FM801_FM_VOL, 0, 8, 31, 1,
         db_scale_dsp),
FM801_SINGLE("FM Playback Switch", FM801_FM_VOL, 15, 1, 1),
{
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "Digital Capture Source",
    .info = snd_fm801_info_mux,
    .get = snd_fm801_get_mux,
    .put = snd_fm801_put_mux,
}
};

#define FM801_CONTROLS_MULTI ARRAY_SIZE(snd_fm801_controls_multi)

static struct snd_kcontrol_new snd_fm801_controls_multi[] __devinitdata = {
FM801_SINGLE("AC97 2ch->4ch Copy Switch", FM801_CODEC_CTRL, 7, 1, 0),
FM801_SINGLE("AC97 18-bit Switch", FM801_CODEC_CTRL, 10, 1, 0),
FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), FM801_I2S_MODE, 8, 1, 0),
FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",PLAYBACK,SWITCH), FM801_I2S_MODE, 9, 1, 0),
FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",CAPTURE,SWITCH), FM801_I2S_MODE, 10, 1, 0),
FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH), FM801_GEN_CTRL, 2, 1, 0),
};

static void snd_fm801_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
{
    struct fm801 *chip = bus->private_data;
    chip->ac97_bus = NULL;
}

static void snd_fm801_mixer_free_ac97(struct snd_ac97 *ac97)
{
    struct fm801 *chip = ac97->private_data;
    if (ac97->num == 0) {
        chip->ac97 = NULL;
    } else {
        chip->ac97_sec = NULL;
    }
}

static int __devinit snd_fm801_mixer(struct fm801 *chip)
{
    struct snd_ac97_template ac97;
    unsigned int i;
    int err;
    static struct snd_ac97_bus_ops ops = {
        .write = snd_fm801_codec_write,
        .read = snd_fm801_codec_read,
    };

    if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
        return err;
    chip->ac97_bus->private_free = snd_fm801_mixer_free_ac97_bus;

    memset(&ac97, 0, sizeof(ac97));
    ac97.private_data = chip;
    ac97.private_free = snd_fm801_mixer_free_ac97;
    if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
        return err;
    if (chip->secondary) {
        ac97.num = 1;
        ac97.addr = chip->secondary_addr;
        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec)) < 0)
            return err;
    }
    for (i = 0; i < FM801_CONTROLS; i++)
        snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls[i], chip));
    if (chip->multichannel) {
        for (i = 0; i < FM801_CONTROLS_MULTI; i++)
            snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls_multi[i], chip));
    }
    return 0;
}

/*
 *  initialization routines
 */

static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
              unsigned short reg, unsigned long waits)
{
    unsigned long timeout = jiffies + waits;

    outw(FM801_AC97_READ | (codec_id << FM801_AC97_ADDR_SHIFT) | reg,
         FM801_REG(chip, AC97_CMD));
    udelay(5);
    do {
        if ((inw(FM801_REG(chip, AC97_CMD)) & (FM801_AC97_VALID|FM801_AC97_BUSY))
            == FM801_AC97_VALID)
            return 0;
        schedule_timeout_uninterruptible(1);
    } while (time_after(timeout, jiffies));
    return -EIO;
}

static int snd_fm801_chip_init(struct fm801 *chip, int resume)
{
    unsigned short cmdw;

    if (chip->tea575x_tuner & TUNER_ONLY)
        goto __ac97_ok;

    /* codec cold reset + AC'97 warm reset */
    outw((1<<5) | (1<<6), FM801_REG(chip, CODEC_CTRL));
    inw(FM801_REG(chip, CODEC_CTRL)); /* flush posting data */
    udelay(100);
    outw(0, FM801_REG(chip, CODEC_CTRL));

    if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0)
        if (!resume) {
            snd_printk(KERN_INFO "Primary AC'97 codec not found, "
                        "assume SF64-PCR (tuner-only)\n");
            chip->tea575x_tuner = 3 | TUNER_ONLY;
            goto __ac97_ok;
        }

    if (chip->multichannel) {
        if (chip->secondary_addr) {
            wait_for_codec(chip, chip->secondary_addr,
                       AC97_VENDOR_ID1, msecs_to_jiffies(50));
        } else {
            /* my card has the secondary codec */
            /* at address #3, so the loop is inverted */
            int i;
            for (i = 3; i > 0; i--) {
                if (!wait_for_codec(chip, i, AC97_VENDOR_ID1,
                             msecs_to_jiffies(50))) {
                    cmdw = inw(FM801_REG(chip, AC97_DATA));
                    if (cmdw != 0xffff && cmdw != 0) {
                        chip->secondary = 1;
                        chip->secondary_addr = i;
                        break;
                    }
                }
            }
        }

        /* the recovery phase, it seems that probing for non-existing codec might */
        /* cause timeout problems */
        wait_for_codec(chip, 0, AC97_VENDOR_ID1, msecs_to_jiffies(750));
    }

      __ac97_ok:

    /* init volume */
    outw(0x0808, FM801_REG(chip, PCM_VOL));
    outw(0x9f1f, FM801_REG(chip, FM_VOL));
    outw(0x8808, FM801_REG(chip, I2S_VOL));

    /* I2S control - I2S mode */
    outw(0x0003, FM801_REG(chip, I2S_MODE));

    /* interrupt setup */
    cmdw = inw(FM801_REG(chip, IRQ_MASK));
    if (chip->irq < 0)
        cmdw |= 0x00c3;     /* mask everything, no PCM nor MPU */
    else
        cmdw &= ~0x0083;    /* unmask MPU, PLAYBACK & CAPTURE */
    outw(cmdw, FM801_REG(chip, IRQ_MASK));

    /* interrupt clear */
    outw(FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU, FM801_REG(chip, IRQ_STATUS));

    return 0;
}


static int snd_fm801_free(struct fm801 *chip)
{
    unsigned short cmdw;

    if (chip->irq < 0)
        goto __end_hw;

    /* interrupt setup - mask everything */
    cmdw = inw(FM801_REG(chip, IRQ_MASK));
    cmdw |= 0x00c3;
    outw(cmdw, FM801_REG(chip, IRQ_MASK));

      __end_hw:
#ifdef CONFIG_SND_FM801_TEA575X_BOOL
    if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
        snd_tea575x_exit(&chip->tea);
        v4l2_device_unregister(&chip->v4l2_dev);
    }
#endif
    if (chip->irq >= 0)
        free_irq(chip->irq, chip);
    pci_release_regions(chip->pci);
    pci_disable_device(chip->pci);

    kfree(chip);
    return 0;
}

static int snd_fm801_dev_free(struct snd_device *device)
{
    struct fm801 *chip = device->device_data;
    return snd_fm801_free(chip);
}

static int __devinit snd_fm801_create(struct snd_card *card,
                      struct pci_dev * pci,
                      int tea575x_tuner,
                      int radio_nr,
                      struct fm801 ** rchip)
{
    struct fm801 *chip;
    int err;
    static struct snd_device_ops ops = {
        .dev_free = snd_fm801_dev_free,
    };

    *rchip = NULL;
    if ((err = pci_enable_device(pci)) < 0)
        return err;
    chip = kzalloc(sizeof(*chip), GFP_KERNEL);
    if (chip == NULL) {
        pci_disable_device(pci);
        return -ENOMEM;
    }
    spin_lock_init(&chip->reg_lock);
    chip->card = card;
    chip->pci = pci;
    chip->irq = -1;
    chip->tea575x_tuner = tea575x_tuner;
    if ((err = pci_request_regions(pci, "FM801")) < 0) {
        kfree(chip);
        pci_disable_device(pci);
        return err;
    }
    chip->port = pci_resource_start(pci, 0);
    if ((tea575x_tuner & TUNER_ONLY) == 0) {
        if (request_irq(pci->irq, snd_fm801_interrupt, IRQF_SHARED,
                KBUILD_MODNAME, chip)) {
            snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->irq);
            snd_fm801_free(chip);
            return -EBUSY;
        }
        chip->irq = pci->irq;
        pci_set_master(pci);
    }

    if (pci->revision >= 0xb1)  /* FM801-AU */
        chip->multichannel = 1;

    snd_fm801_chip_init(chip, 0);
    /* init might set tuner access method */
    tea575x_tuner = chip->tea575x_tuner;

    if (chip->irq >= 0 && (tea575x_tuner & TUNER_ONLY)) {
        pci_clear_master(pci);
        free_irq(chip->irq, chip);
        chip->irq = -1;
    }

    if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
        snd_fm801_free(chip);
        return err;
    }

    snd_card_set_dev(card, &pci->dev);

#ifdef CONFIG_SND_FM801_TEA575X_BOOL
    err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
    if (err < 0) {
        snd_fm801_free(chip);
        return err;
    }
    chip->tea.v4l2_dev = &chip->v4l2_dev;
    chip->tea.radio_nr = radio_nr;
    chip->tea.private_data = chip;
    chip->tea.ops = &snd_fm801_tea_ops;
    sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
    if ((tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
        (tea575x_tuner & TUNER_TYPE_MASK) < 4) {
        if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
            snd_printk(KERN_ERR "TEA575x radio not found\n");
            snd_fm801_free(chip);
            return -ENODEV;
        }
    } else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0) {
        /* autodetect tuner connection */
        for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
            chip->tea575x_tuner = tea575x_tuner;
            if (!snd_tea575x_init(&chip->tea, THIS_MODULE)) {
                snd_printk(KERN_INFO "detected TEA575x radio type %s\n",
                       get_tea575x_gpio(chip)->name);
                break;
            }
        }
        if (tea575x_tuner == 4) {
            snd_printk(KERN_ERR "TEA575x radio not found\n");
            chip->tea575x_tuner = TUNER_DISABLED;
        }
    }
    if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
        strlcpy(chip->tea.card, get_tea575x_gpio(chip)->name,
            sizeof(chip->tea.card));
    }
#endif

    *rchip = chip;
    return 0;
}

static int __devinit snd_card_fm801_probe(struct pci_dev *pci,
                      const struct pci_device_id *pci_id)
{
    static int dev;
    struct snd_card *card;
    struct fm801 *chip;
    struct snd_opl3 *opl3;
    int err;

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

    err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
    if (err < 0)
        return err;
    if ((err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev], &chip)) < 0) {
        snd_card_free(card);
        return err;
    }
    card->private_data = chip;

    strcpy(card->driver, "FM801");
    strcpy(card->shortname, "ForteMedia FM801-");
    strcat(card->shortname, chip->multichannel ? "AU" : "AS");
    sprintf(card->longname, "%s at 0x%lx, irq %i",
        card->shortname, chip->port, chip->irq);

    if (chip->tea575x_tuner & TUNER_ONLY)
        goto __fm801_tuner_only;

    if ((err = snd_fm801_pcm(chip, 0, NULL)) < 0) {
        snd_card_free(card);
        return err;
    }
    if ((err = snd_fm801_mixer(chip)) < 0) {
        snd_card_free(card);
        return err;
    }
    if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
                       FM801_REG(chip, MPU401_DATA),
                       MPU401_INFO_INTEGRATED |
                       MPU401_INFO_IRQ_HOOK,
                       -1, &chip->rmidi)) < 0) {
        snd_card_free(card);
        return err;
    }
    if ((err = snd_opl3_create(card, FM801_REG(chip, OPL3_BANK0),
                   FM801_REG(chip, OPL3_BANK1),
                   OPL3_HW_OPL3_FM801, 1, &opl3)) < 0) {
        snd_card_free(card);
        return err;
    }
    if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
        snd_card_free(card);
        return err;
    }

      __fm801_tuner_only:
    if ((err = snd_card_register(card)) < 0) {
        snd_card_free(card);
        return err;
    }
    pci_set_drvdata(pci, card);
    dev++;
    return 0;
}

static void __devexit snd_card_fm801_remove(struct pci_dev *pci)
{
    snd_card_free(pci_get_drvdata(pci));
    pci_set_drvdata(pci, NULL);
}

#ifdef CONFIG_PM_SLEEP
static unsigned char saved_regs[] = {
    FM801_PCM_VOL, FM801_I2S_VOL, FM801_FM_VOL, FM801_REC_SRC,
    FM801_PLY_CTRL, FM801_PLY_COUNT, FM801_PLY_BUF1, FM801_PLY_BUF2,
    FM801_CAP_CTRL, FM801_CAP_COUNT, FM801_CAP_BUF1, FM801_CAP_BUF2,
    FM801_CODEC_CTRL, FM801_I2S_MODE, FM801_VOLUME, FM801_GEN_CTRL,
};

static int snd_fm801_suspend(struct device *dev)
{
    struct pci_dev *pci = to_pci_dev(dev);
    struct snd_card *card = dev_get_drvdata(dev);
    struct fm801 *chip = card->private_data;
    int i;

    snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
    snd_pcm_suspend_all(chip->pcm);
    snd_ac97_suspend(chip->ac97);
    snd_ac97_suspend(chip->ac97_sec);
    for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
        chip->saved_regs[i] = inw(chip->port + saved_regs[i]);
    /* FIXME: tea575x suspend */

    pci_disable_device(pci);
    pci_save_state(pci);
    pci_set_power_state(pci, PCI_D3hot);
    return 0;
}

static int snd_fm801_resume(struct device *dev)
{
    struct pci_dev *pci = to_pci_dev(dev);
    struct snd_card *card = dev_get_drvdata(dev);
    struct fm801 *chip = card->private_data;
    int i;

    pci_set_power_state(pci, PCI_D0);
    pci_restore_state(pci);
    if (pci_enable_device(pci) < 0) {
        printk(KERN_ERR "fm801: pci_enable_device failed, "
               "disabling device\n");
        snd_card_disconnect(card);
        return -EIO;
    }
    pci_set_master(pci);

    snd_fm801_chip_init(chip, 1);
    snd_ac97_resume(chip->ac97);
    snd_ac97_resume(chip->ac97_sec);
    for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
        outw(chip->saved_regs[i], chip->port + saved_regs[i]);

    snd_power_change_state(card, SNDRV_CTL_POWER_D0);
    return 0;
}

static SIMPLE_DEV_PM_OPS(snd_fm801_pm, snd_fm801_suspend, snd_fm801_resume);
#define SND_FM801_PM_OPS    &snd_fm801_pm
#else
#define SND_FM801_PM_OPS    NULL
#endif /* CONFIG_PM_SLEEP */

static struct pci_driver fm801_driver = {
    .name = KBUILD_MODNAME,
    .id_table = snd_fm801_ids,
    .probe = snd_card_fm801_probe,
    .remove = __devexit_p(snd_card_fm801_remove),
    .driver = {
        .pm = SND_FM801_PM_OPS,
    },
};

module_pci_driver(fm801_driver);