Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / sound / pci / fm801.c
diff --git a/kernel/sound/pci/fm801.c b/kernel/sound/pci/fm801.c
new file mode 100644 (file)
index 0000000..1fdd92b
--- /dev/null
@@ -0,0 +1,1410 @@
+/*
+ *  The driver for the ForteMedia FM801 based soundcards
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *
+ *   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.
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.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>
+
+#ifdef CONFIG_SND_FM801_TEA575X_BOOL
+#include <media/tea575x.h>
+#endif
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
+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_writew(chip,reg,value)   outw((value), chip->port + FM801_##reg)
+#define fm801_readw(chip,reg)          inw(chip->port + FM801_##reg)
+
+#define fm801_writel(chip,reg,value)   outl((value), 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 - describes FM801 chip
+ * @port:              I/O port number
+ * @multichannel:      multichannel support
+ * @secondary:         secondary codec
+ * @secondary_addr:    address of the secondary codec
+ * @tea575x_tuner:     tuner access method & flags
+ * @ply_ctrl:          playback control
+ * @cap_ctrl:          capture control
+ */
+struct fm801 {
+       int irq;
+
+       unsigned long port;
+       unsigned int multichannel: 1,
+                    secondary: 1;
+       unsigned char secondary_addr;
+       unsigned int tea575x_tuner;
+
+       unsigned short ply_ctrl;
+       unsigned short cap_ctrl;
+
+       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 const struct pci_device_id 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 bool fm801_ac97_is_ready(struct fm801 *chip, unsigned int iterations)
+{
+       unsigned int idx;
+
+       for (idx = 0; idx < iterations; idx++) {
+               if (!(fm801_readw(chip, AC97_CMD) & FM801_AC97_BUSY))
+                       return true;
+               udelay(10);
+       }
+       return false;
+}
+
+static bool fm801_ac97_is_valid(struct fm801 *chip, unsigned int iterations)
+{
+       unsigned int idx;
+
+       for (idx = 0; idx < iterations; idx++) {
+               if (fm801_readw(chip, AC97_CMD) & FM801_AC97_VALID)
+                       return true;
+               udelay(10);
+       }
+       return false;
+}
+
+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;
+
+       /*
+        *  Wait until the codec interface is not ready..
+        */
+       if (!fm801_ac97_is_ready(chip, 100)) {
+               dev_err(chip->card->dev, "AC'97 interface is busy (1)\n");
+               return;
+       }
+
+       /* write data and address */
+       fm801_writew(chip, AC97_DATA, val);
+       fm801_writew(chip, AC97_CMD, reg | (ac97->addr << FM801_AC97_ADDR_SHIFT));
+       /*
+        *  Wait until the write command is not completed..
+        */
+       if (!fm801_ac97_is_ready(chip, 1000))
+               dev_err(chip->card->dev, "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;
+
+       /*
+        *  Wait until the codec interface is not ready..
+        */
+       if (!fm801_ac97_is_ready(chip, 100)) {
+               dev_err(chip->card->dev, "AC'97 interface is busy (1)\n");
+               return 0;
+       }
+
+       /* read command */
+       fm801_writew(chip, AC97_CMD,
+                    reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ);
+       if (!fm801_ac97_is_ready(chip, 100)) {
+               dev_err(chip->card->dev, "AC'97 interface #%d is busy (2)\n",
+                       ac97->num);
+               return 0;
+       }
+
+       if (!fm801_ac97_is_valid(chip, 1000)) {
+               dev_err(chip->card->dev,
+                       "AC'97 interface #%d is not valid (2)\n", ac97->num);
+               return 0;
+       }
+
+       return fm801_readw(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;
+       }
+       fm801_writew(chip, PLY_CTRL, 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;
+       }
+       fm801_writew(chip, CAP_CTRL, 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;
+       fm801_writew(chip, PLY_CTRL, chip->ply_ctrl);
+       fm801_writew(chip, PLY_COUNT, chip->ply_count - 1);
+       chip->ply_buffer = runtime->dma_addr;
+       chip->ply_pos = 0;
+       fm801_writel(chip, PLY_BUF1, chip->ply_buffer);
+       fm801_writel(chip, PLY_BUF2,
+                    chip->ply_buffer + (chip->ply_count % chip->ply_size));
+       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;
+       fm801_writew(chip, CAP_CTRL, chip->cap_ctrl);
+       fm801_writew(chip, CAP_COUNT, chip->cap_count - 1);
+       chip->cap_buffer = runtime->dma_addr;
+       chip->cap_pos = 0;
+       fm801_writel(chip, CAP_BUF1, chip->cap_buffer);
+       fm801_writel(chip, CAP_BUF2,
+                    chip->cap_buffer + (chip->cap_count % chip->cap_size));
+       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) - fm801_readw(chip, PLY_COUNT);
+       if (fm801_readw(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) - fm801_readw(chip, CAP_COUNT);
+       if (fm801_readw(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 = fm801_readw(chip, IRQ_STATUS);
+       status &= FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU|FM801_IRQ_VOLUME;
+       if (! status)
+               return IRQ_NONE;
+       /* ack first */
+       fm801_writew(chip, IRQ_STATUS, 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;
+               if (chip->ply_buf & 1)
+                       fm801_writel(chip, PLY_BUF1, chip->ply_buffer + tmp);
+               else
+                       fm801_writel(chip, PLY_BUF2, chip->ply_buffer + tmp);
+               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;
+               if (chip->cap_buf & 1)
+                       fm801_writel(chip, CAP_BUF1, chip->cap_buffer + tmp);
+               else
+                       fm801_writel(chip, CAP_BUF2, chip->cap_buffer + tmp);
+               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 snd_fm801_pcm(struct fm801 *chip, int device)
+{
+       struct snd_pcm *pcm;
+       int err;
+
+       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);
+
+       return snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+                                    snd_pcm_alt_chmaps,
+                                    chip->multichannel ? 6 : 2, 0,
+                                    NULL);
+}
+
+/*
+ *  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 = fm801_readw(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);
+
+       fm801_writew(chip, GPIO_CTRL, reg);
+}
+
+static u8 snd_fm801_tea575x_get_pins(struct snd_tea575x *tea)
+{
+       struct fm801 *chip = tea->private_data;
+       unsigned short reg = fm801_readw(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 = fm801_readw(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));
+       }
+
+       fm801_writew(chip, GPIO_CTRL, reg);
+}
+
+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 const char * const texts[5] = {
+               "AC97 Primary", "FM", "I2S", "PCM", "AC97 Secondary"
+       };
+       return snd_ctl_enum_info(uinfo, 1, 5, texts);
+}
+
+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 = fm801_readw(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[] = {
+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[] = {
+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 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;
+
+       fm801_writew(chip, AC97_CMD,
+                    reg | (codec_id << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ);
+       udelay(5);
+       do {
+               if ((fm801_readw(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 */
+       fm801_writew(chip, CODEC_CTRL, (1 << 5) | (1 << 6));
+       fm801_readw(chip, CODEC_CTRL); /* flush posting data */
+       udelay(100);
+       fm801_writew(chip, CODEC_CTRL, 0);
+
+       if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0)
+               if (!resume) {
+                       dev_info(chip->card->dev,
+                                "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 = fm801_readw(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 */
+       fm801_writew(chip, PCM_VOL, 0x0808);
+       fm801_writew(chip, FM_VOL, 0x9f1f);
+       fm801_writew(chip, I2S_VOL, 0x8808);
+
+       /* I2S control - I2S mode */
+       fm801_writew(chip, I2S_MODE, 0x0003);
+
+       /* interrupt setup */
+       cmdw = fm801_readw(chip, IRQ_MASK);
+       if (chip->irq < 0)
+               cmdw |= 0x00c3;         /* mask everything, no PCM nor MPU */
+       else
+               cmdw &= ~0x0083;        /* unmask MPU, PLAYBACK & CAPTURE */
+       fm801_writew(chip, IRQ_MASK, cmdw);
+
+       /* interrupt clear */
+       fm801_writew(chip, IRQ_STATUS,
+                    FM801_IRQ_PLAYBACK | FM801_IRQ_CAPTURE | FM801_IRQ_MPU);
+
+       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 = fm801_readw(chip, IRQ_MASK);
+       cmdw |= 0x00c3;
+       fm801_writew(chip, IRQ_MASK, cmdw);
+
+      __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
+       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 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 = pcim_enable_device(pci)) < 0)
+               return err;
+       chip = devm_kzalloc(&pci->dev, sizeof(*chip), GFP_KERNEL);
+       if (chip == NULL)
+               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)
+               return err;
+       chip->port = pci_resource_start(pci, 0);
+       if ((tea575x_tuner & TUNER_ONLY) == 0) {
+               if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
+                               IRQF_SHARED, KBUILD_MODNAME, chip)) {
+                       dev_err(card->dev, "unable to grab IRQ %d\n", pci->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 ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+               snd_fm801_free(chip);
+               return err;
+       }
+
+#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)) {
+                       dev_err(card->dev, "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)) {
+                               dev_info(card->dev,
+                                        "detected TEA575x radio type %s\n",
+                                          get_tea575x_gpio(chip)->name);
+                               break;
+                       }
+               }
+               if (tea575x_tuner == 4) {
+                       dev_err(card->dev, "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 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_new(&pci->dev, 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)) < 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,
+                                      chip->port + FM801_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, chip->port + FM801_OPL3_BANK0,
+                                  chip->port + FM801_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 snd_card_fm801_remove(struct pci_dev *pci)
+{
+       snd_card_free(pci_get_drvdata(pci));
+}
+
+#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 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 */
+       return 0;
+}
+
+static int snd_fm801_resume(struct device *dev)
+{
+       struct snd_card *card = dev_get_drvdata(dev);
+       struct fm801 *chip = card->private_data;
+       int i;
+
+       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 = snd_card_fm801_remove,
+       .driver = {
+               .pm = SND_FM801_PM_OPS,
+       },
+};
+
+module_pci_driver(fm801_driver);