Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1414 insertions, 0 deletions

diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
new file mode 100644
index 0000000000..62b3cb126c
--- /dev/null
+++ b/sound/pci/fm801.c
@@ -0,0 +1,1414 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  The driver for the ForteMedia FM801 based soundcards
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#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/drv-intf/tea575x.h>
+#endif
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
+MODULE_DESCRIPTION("ForteMedia FM801");
+MODULE_LICENSE("GPL");
+
+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
+ * @dev:		device for this chio
+ * @irq:		irq number
+ * @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
+ * @ply_buffer:		playback buffer
+ * @ply_buf:		playback buffer index
+ * @ply_count:		playback buffer count
+ * @ply_size:		playback buffer size
+ * @ply_pos:		playback position
+ * @cap_buffer:		capture buffer
+ * @cap_buf:		capture buffer index
+ * @cap_count:		capture buffer count
+ * @cap_size:		capture buffer size
+ * @cap_pos:		capture position
+ * @ac97_bus:		ac97 bus handle
+ * @ac97:		ac97 handle
+ * @ac97_sec:		ac97 secondary handle
+ * @card:		ALSA card
+ * @pcm:		PCM devices
+ * @rmidi:		rmidi device
+ * @playback_substream:	substream for playback
+ * @capture_substream:	substream for capture
+ * @p_dma_size:		playback DMA size
+ * @c_dma_size:		capture DMA size
+ * @reg_lock:		lock
+ * @proc_entry:		/proc entry
+ * @v4l2_dev:		v4l2 device
+ * @tea:		tea575a structure
+ * @saved_regs:		context saved during suspend
+ */
+struct fm801 {
+	struct device *dev;
+	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 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
+};
+
+/*
+ * IO accessors
+ */
+
+static inline void fm801_iowrite16(struct fm801 *chip, unsigned short offset, u16 value)
+{
+	outw(value, chip->port + offset);
+}
+
+static inline u16 fm801_ioread16(struct fm801 *chip, unsigned short offset)
+{
+	return inw(chip->port + offset);
+}
+
+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 = fm801_ioread16(chip, reg);
+	new = (old & ~mask) | value;
+	change = old != new;
+	if (change)
+		fm801_iowrite16(chip, reg, new);
+	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 const unsigned int rates[] = {
+  5500,  8000,  9600, 11025,
+  16000, 19200, 22050, 32000,
+  38400, 44100, 48000
+};
+
+static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
+	.count = ARRAY_SIZE(rates),
+	.list = rates,
+	.mask = 0,
+};
+
+static const unsigned int channels[] = {
+  2, 4, 6
+};
+
+static const 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_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 const 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 const 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);
+	}
+	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 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);
+	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+	if (err < 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 const struct snd_pcm_ops snd_fm801_playback_ops = {
+	.open =		snd_fm801_playback_open,
+	.close =	snd_fm801_playback_close,
+	.prepare =	snd_fm801_playback_prepare,
+	.trigger =	snd_fm801_playback_trigger,
+	.pointer =	snd_fm801_playback_pointer,
+};
+
+static const struct snd_pcm_ops snd_fm801_capture_ops = {
+	.open =		snd_fm801_capture_open,
+	.close =	snd_fm801_capture_close,
+	.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 pci_dev *pdev = to_pci_dev(chip->dev);
+	struct snd_pcm *pcm;
+	int err;
+
+	err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm);
+	if (err < 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_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &pdev->dev,
+				       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 const 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 const 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;
+	long *value = ucontrol->value.integer.value;
+
+	value[0] = (fm801_ioread16(chip, reg) >> shift) & mask;
+	if (invert)
+		value[0] = mask - 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;
+	long *value = ucontrol->value.integer.value;
+
+	spin_lock_irq(&chip->reg_lock);
+	value[0] = (fm801_ioread16(chip, reg) >> shift_left) & mask;
+	value[1] = (fm801_ioread16(chip, reg) >> shift_right) & mask;
+	spin_unlock_irq(&chip->reg_lock);
+	if (invert) {
+		value[0] = mask - value[0];
+		value[1] = mask - 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;
+ 
+	val = ucontrol->value.enumerated.item[0];
+	if (val > 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 const 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 const 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 int snd_fm801_mixer(struct fm801 *chip)
+{
+	struct snd_ac97_template ac97;
+	unsigned int i;
+	int err;
+	static const struct snd_ac97_bus_ops ops = {
+		.write = snd_fm801_codec_write,
+		.read = snd_fm801_codec_read,
+	};
+
+	err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
+	if (err < 0)
+		return err;
+
+	memset(&ac97, 0, sizeof(ac97));
+	ac97.private_data = chip;
+	err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
+	if (err < 0)
+		return err;
+	if (chip->secondary) {
+		ac97.num = 1;
+		ac97.addr = chip->secondary_addr;
+		err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec);
+		if (err < 0)
+			return err;
+	}
+	for (i = 0; i < FM801_CONTROLS; i++) {
+		err = snd_ctl_add(chip->card,
+			snd_ctl_new1(&snd_fm801_controls[i], chip));
+		if (err < 0)
+			return err;
+	}
+	if (chip->multichannel) {
+		for (i = 0; i < FM801_CONTROLS_MULTI; i++) {
+			err = snd_ctl_add(chip->card,
+				snd_ctl_new1(&snd_fm801_controls_multi[i], chip));
+			if (err < 0)
+				return err;
+		}
+	}
+	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 reset_codec(struct fm801 *chip)
+{
+	/* 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);
+
+	return wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750));
+}
+
+static void snd_fm801_chip_multichannel_init(struct fm801 *chip)
+{
+	unsigned short cmdw;
+
+	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));
+	}
+}
+
+static void snd_fm801_chip_init(struct fm801 *chip)
+{
+	unsigned short cmdw;
+
+	/* 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);
+}
+
+static void snd_fm801_free(struct snd_card *card)
+{
+	struct fm801 *chip = card->private_data;
+	unsigned short cmdw;
+
+	/* interrupt setup - mask everything */
+	cmdw = fm801_readw(chip, IRQ_MASK);
+	cmdw |= 0x00c3;
+	fm801_writew(chip, IRQ_MASK, cmdw);
+
+#ifdef CONFIG_SND_FM801_TEA575X_BOOL
+	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
+		snd_tea575x_exit(&chip->tea);
+		v4l2_device_unregister(&chip->v4l2_dev);
+	}
+#endif
+}
+
+static int snd_fm801_create(struct snd_card *card,
+			    struct pci_dev *pci,
+			    int tea575x_tuner,
+			    int radio_nr)
+{
+	struct fm801 *chip = card->private_data;
+	int err;
+
+	err = pcim_enable_device(pci);
+	if (err < 0)
+		return err;
+	spin_lock_init(&chip->reg_lock);
+	chip->card = card;
+	chip->dev = &pci->dev;
+	chip->irq = -1;
+	chip->tea575x_tuner = tea575x_tuner;
+	err = pci_request_regions(pci, "FM801");
+	if (err < 0)
+		return err;
+	chip->port = pci_resource_start(pci, 0);
+
+	if (pci->revision >= 0xb1)	/* FM801-AU */
+		chip->multichannel = 1;
+
+	if (!(chip->tea575x_tuner & TUNER_ONLY)) {
+		if (reset_codec(chip) < 0) {
+			dev_info(chip->card->dev,
+				 "Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
+			chip->tea575x_tuner = 3 | TUNER_ONLY;
+		} else {
+			snd_fm801_chip_multichannel_init(chip);
+		}
+	}
+
+	if ((chip->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);
+			return -EBUSY;
+		}
+		chip->irq = pci->irq;
+		card->sync_irq = chip->irq;
+		pci_set_master(pci);
+	}
+
+	card->private_free = snd_fm801_free;
+	snd_fm801_chip_init(chip);
+
+#ifdef CONFIG_SND_FM801_TEA575X_BOOL
+	err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
+	if (err < 0)
+		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 ((chip->tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
+	    (chip->tea575x_tuner & TUNER_TYPE_MASK) < 4) {
+		if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
+			dev_err(card->dev, "TEA575x radio not found\n");
+			return -ENODEV;
+		}
+	} else if ((chip->tea575x_tuner & TUNER_TYPE_MASK) == 0) {
+		unsigned int tuner_only = chip->tea575x_tuner & TUNER_ONLY;
+
+		/* 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;
+		}
+
+		chip->tea575x_tuner |= tuner_only;
+	}
+	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
+		strscpy(chip->tea.card, get_tea575x_gpio(chip)->name,
+			sizeof(chip->tea.card));
+	}
+#endif
+	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_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
+				sizeof(*chip), &card);
+	if (err < 0)
+		return err;
+	chip = card->private_data;
+	err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev]);
+	if (err < 0)
+		return err;
+
+	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;
+
+	err = snd_fm801_pcm(chip, 0);
+	if (err < 0)
+		return err;
+	err = snd_fm801_mixer(chip);
+	if (err < 0)
+		return err;
+	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);
+	if (err < 0)
+		return err;
+	err = snd_opl3_create(card, chip->port + FM801_OPL3_BANK0,
+			      chip->port + FM801_OPL3_BANK1,
+			      OPL3_HW_OPL3_FM801, 1, &opl3);
+	if (err < 0)
+		return err;
+	err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
+	if (err < 0)
+		return err;
+
+      __fm801_tuner_only:
+	err = snd_card_register(card);
+	if (err < 0)
+		return err;
+	pci_set_drvdata(pci, card);
+	dev++;
+	return 0;
+}
+
+static int snd_card_fm801_probe(struct pci_dev *pci,
+				const struct pci_device_id *pci_id)
+{
+	return snd_card_free_on_error(&pci->dev, __snd_card_fm801_probe(pci, pci_id));
+}
+
+#ifdef CONFIG_PM_SLEEP
+static const 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);
+
+	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
+		chip->saved_regs[i] = fm801_ioread16(chip, saved_regs[i]);
+
+	if (chip->tea575x_tuner & TUNER_ONLY) {
+		/* FIXME: tea575x suspend */
+	} else {
+		snd_ac97_suspend(chip->ac97);
+		snd_ac97_suspend(chip->ac97_sec);
+	}
+
+	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;
+
+	if (chip->tea575x_tuner & TUNER_ONLY) {
+		snd_fm801_chip_init(chip);
+	} else {
+		reset_codec(chip);
+		snd_fm801_chip_multichannel_init(chip);
+		snd_fm801_chip_init(chip);
+		snd_ac97_resume(chip->ac97);
+		snd_ac97_resume(chip->ac97_sec);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
+		fm801_iowrite16(chip, saved_regs[i], chip->saved_regs[i]);
+
+#ifdef CONFIG_SND_FM801_TEA575X_BOOL
+	if (!(chip->tea575x_tuner & TUNER_DISABLED))
+		snd_tea575x_set_freq(&chip->tea);
+#endif
+
+	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,
+	.driver = {
+		.pm = SND_FM801_PM_OPS,
+	},
+};
+
+module_pci_driver(fm801_driver);