Initial import

1 files changed, 980 insertions, 0 deletions

diff --git a/sound/isa/ad1816a/ad1816a_lib.c b/sound/isa/ad1816a/ad1816a_lib.c
new file mode 100644
index 000000000..5c815f5fb
--- /dev/null
+++ b/sound/isa/ad1816a/ad1816a_lib.c
@@ -0,0 +1,980 @@
+/*
+    ad1816a.c - lowlevel code for Analog Devices AD1816A chip.
+    Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <sound/core.h>
+#include <sound/tlv.h>
+#include <sound/ad1816a.h>
+
+#include <asm/dma.h>
+
+static inline int snd_ad1816a_busy_wait(struct snd_ad1816a *chip)
+{
+	int timeout;
+
+	for (timeout = 1000; timeout-- > 0; udelay(10))
+		if (inb(AD1816A_REG(AD1816A_CHIP_STATUS)) & AD1816A_READY)
+			return 0;
+
+	snd_printk(KERN_WARNING "chip busy.\n");
+	return -EBUSY;
+}
+
+static inline unsigned char snd_ad1816a_in(struct snd_ad1816a *chip, unsigned char reg)
+{
+	snd_ad1816a_busy_wait(chip);
+	return inb(AD1816A_REG(reg));
+}
+
+static inline void snd_ad1816a_out(struct snd_ad1816a *chip, unsigned char reg,
+			    unsigned char value)
+{
+	snd_ad1816a_busy_wait(chip);
+	outb(value, AD1816A_REG(reg));
+}
+
+static inline void snd_ad1816a_out_mask(struct snd_ad1816a *chip, unsigned char reg,
+				 unsigned char mask, unsigned char value)
+{
+	snd_ad1816a_out(chip, reg,
+		(value & mask) | (snd_ad1816a_in(chip, reg) & ~mask));
+}
+
+static unsigned short snd_ad1816a_read(struct snd_ad1816a *chip, unsigned char reg)
+{
+	snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
+	return snd_ad1816a_in(chip, AD1816A_INDIR_DATA_LOW) |
+		(snd_ad1816a_in(chip, AD1816A_INDIR_DATA_HIGH) << 8);
+}
+
+static void snd_ad1816a_write(struct snd_ad1816a *chip, unsigned char reg,
+			      unsigned short value)
+{
+	snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
+	snd_ad1816a_out(chip, AD1816A_INDIR_DATA_LOW, value & 0xff);
+	snd_ad1816a_out(chip, AD1816A_INDIR_DATA_HIGH, (value >> 8) & 0xff);
+}
+
+static void snd_ad1816a_write_mask(struct snd_ad1816a *chip, unsigned char reg,
+				   unsigned short mask, unsigned short value)
+{
+	snd_ad1816a_write(chip, reg,
+		(value & mask) | (snd_ad1816a_read(chip, reg) & ~mask));
+}
+
+
+static unsigned char snd_ad1816a_get_format(struct snd_ad1816a *chip,
+					    unsigned int format, int channels)
+{
+	unsigned char retval = AD1816A_FMT_LINEAR_8;
+
+	switch (format) {
+	case SNDRV_PCM_FORMAT_MU_LAW:
+		retval = AD1816A_FMT_ULAW_8;
+		break;
+	case SNDRV_PCM_FORMAT_A_LAW:
+		retval = AD1816A_FMT_ALAW_8;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		retval = AD1816A_FMT_LINEAR_16_LIT;
+		break;
+	case SNDRV_PCM_FORMAT_S16_BE:
+		retval = AD1816A_FMT_LINEAR_16_BIG;
+	}
+	return (channels > 1) ? (retval | AD1816A_FMT_STEREO) : retval;
+}
+
+static int snd_ad1816a_open(struct snd_ad1816a *chip, unsigned int mode)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	if (chip->mode & mode) {
+		spin_unlock_irqrestore(&chip->lock, flags);
+		return -EAGAIN;
+	}
+
+	switch ((mode &= AD1816A_MODE_OPEN)) {
+	case AD1816A_MODE_PLAYBACK:
+		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
+			AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_PLAYBACK_IRQ_ENABLE, 0xffff);
+		break;
+	case AD1816A_MODE_CAPTURE:
+		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
+			AD1816A_CAPTURE_IRQ_PENDING, 0x00);
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_CAPTURE_IRQ_ENABLE, 0xffff);
+		break;
+	case AD1816A_MODE_TIMER:
+		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
+			AD1816A_TIMER_IRQ_PENDING, 0x00);
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_TIMER_IRQ_ENABLE, 0xffff);
+	}
+	chip->mode |= mode;
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return 0;
+}
+
+static void snd_ad1816a_close(struct snd_ad1816a *chip, unsigned int mode)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	switch ((mode &= AD1816A_MODE_OPEN)) {
+	case AD1816A_MODE_PLAYBACK:
+		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
+			AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_PLAYBACK_IRQ_ENABLE, 0x0000);
+		break;
+	case AD1816A_MODE_CAPTURE:
+		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
+			AD1816A_CAPTURE_IRQ_PENDING, 0x00);
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_CAPTURE_IRQ_ENABLE, 0x0000);
+		break;
+	case AD1816A_MODE_TIMER:
+		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
+			AD1816A_TIMER_IRQ_PENDING, 0x00);
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_TIMER_IRQ_ENABLE, 0x0000);
+	}
+	if (!((chip->mode &= ~mode) & AD1816A_MODE_OPEN))
+		chip->mode = 0;
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+}
+
+
+static int snd_ad1816a_trigger(struct snd_ad1816a *chip, unsigned char what,
+			       int channel, int cmd, int iscapture)
+{
+	int error = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_STOP:
+		spin_lock(&chip->lock);
+		cmd = (cmd == SNDRV_PCM_TRIGGER_START) ? 0xff: 0x00;
+		/* if (what & AD1816A_PLAYBACK_ENABLE) */
+		/* That is not valid, because playback and capture enable
+		 * are the same bit pattern, just to different addresses
+		 */
+		if (! iscapture)
+			snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
+				AD1816A_PLAYBACK_ENABLE, cmd);
+		else
+			snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
+				AD1816A_CAPTURE_ENABLE, cmd);
+		spin_unlock(&chip->lock);
+		break;
+	default:
+		snd_printk(KERN_WARNING "invalid trigger mode 0x%x.\n", what);
+		error = -EINVAL;
+	}
+
+	return error;
+}
+
+static int snd_ad1816a_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	return snd_ad1816a_trigger(chip, AD1816A_PLAYBACK_ENABLE,
+				   SNDRV_PCM_STREAM_PLAYBACK, cmd, 0);
+}
+
+static int snd_ad1816a_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	return snd_ad1816a_trigger(chip, AD1816A_CAPTURE_ENABLE,
+				   SNDRV_PCM_STREAM_CAPTURE, cmd, 1);
+}
+
+static int snd_ad1816a_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_ad1816a_hw_free(struct snd_pcm_substream *substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_ad1816a_playback_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	unsigned long flags;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int size, rate;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	chip->p_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
+	snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
+		AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
+
+	snd_dma_program(chip->dma1, runtime->dma_addr, size,
+			DMA_MODE_WRITE | DMA_AUTOINIT);
+
+	rate = runtime->rate;
+	if (chip->clock_freq)
+		rate = (rate * 33000) / chip->clock_freq;
+	snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, rate);
+	snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
+		AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
+		snd_ad1816a_get_format(chip, runtime->format,
+			runtime->channels));
+
+	snd_ad1816a_write(chip, AD1816A_PLAYBACK_BASE_COUNT,
+		snd_pcm_lib_period_bytes(substream) / 4 - 1);
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return 0;
+}
+
+static int snd_ad1816a_capture_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	unsigned long flags;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int size, rate;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	chip->c_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
+	snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
+		AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
+
+	snd_dma_program(chip->dma2, runtime->dma_addr, size,
+			DMA_MODE_READ | DMA_AUTOINIT);
+
+	rate = runtime->rate;
+	if (chip->clock_freq)
+		rate = (rate * 33000) / chip->clock_freq;
+	snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, rate);
+	snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
+		AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
+		snd_ad1816a_get_format(chip, runtime->format,
+			runtime->channels));
+
+	snd_ad1816a_write(chip, AD1816A_CAPTURE_BASE_COUNT,
+		snd_pcm_lib_period_bytes(substream) / 4 - 1);
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return 0;
+}
+
+
+static snd_pcm_uframes_t snd_ad1816a_playback_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	size_t ptr;
+	if (!(chip->mode & AD1816A_MODE_PLAYBACK))
+		return 0;
+	ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+static snd_pcm_uframes_t snd_ad1816a_capture_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	size_t ptr;
+	if (!(chip->mode & AD1816A_MODE_CAPTURE))
+		return 0;
+	ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+
+static irqreturn_t snd_ad1816a_interrupt(int irq, void *dev_id)
+{
+	struct snd_ad1816a *chip = dev_id;
+	unsigned char status;
+
+	spin_lock(&chip->lock);
+	status = snd_ad1816a_in(chip, AD1816A_INTERRUPT_STATUS);
+	spin_unlock(&chip->lock);
+
+	if ((status & AD1816A_PLAYBACK_IRQ_PENDING) && chip->playback_substream)
+		snd_pcm_period_elapsed(chip->playback_substream);
+
+	if ((status & AD1816A_CAPTURE_IRQ_PENDING) && chip->capture_substream)
+		snd_pcm_period_elapsed(chip->capture_substream);
+
+	if ((status & AD1816A_TIMER_IRQ_PENDING) && chip->timer)
+		snd_timer_interrupt(chip->timer, chip->timer->sticks);
+
+	spin_lock(&chip->lock);
+	snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
+	spin_unlock(&chip->lock);
+	return IRQ_HANDLED;
+}
+
+
+static struct snd_pcm_hardware snd_ad1816a_playback = {
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
+				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
+				 SNDRV_PCM_FMTBIT_S16_BE),
+	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+	.rate_min =		4000,
+	.rate_max =		55200,
+	.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_ad1816a_capture = {
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
+				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
+				 SNDRV_PCM_FMTBIT_S16_BE),
+	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+	.rate_min =		4000,
+	.rate_max =		55200,
+	.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_ad1816a_timer_close(struct snd_timer *timer)
+{
+	struct snd_ad1816a *chip = snd_timer_chip(timer);
+	snd_ad1816a_close(chip, AD1816A_MODE_TIMER);
+	return 0;
+}
+
+static int snd_ad1816a_timer_open(struct snd_timer *timer)
+{
+	struct snd_ad1816a *chip = snd_timer_chip(timer);
+	snd_ad1816a_open(chip, AD1816A_MODE_TIMER);
+	return 0;
+}
+
+static unsigned long snd_ad1816a_timer_resolution(struct snd_timer *timer)
+{
+	if (snd_BUG_ON(!timer))
+		return 0;
+
+	return 10000;
+}
+
+static int snd_ad1816a_timer_start(struct snd_timer *timer)
+{
+	unsigned short bits;
+	unsigned long flags;
+	struct snd_ad1816a *chip = snd_timer_chip(timer);
+	spin_lock_irqsave(&chip->lock, flags);
+	bits = snd_ad1816a_read(chip, AD1816A_INTERRUPT_ENABLE);
+
+	if (!(bits & AD1816A_TIMER_ENABLE)) {
+		snd_ad1816a_write(chip, AD1816A_TIMER_BASE_COUNT,
+			timer->sticks & 0xffff);
+
+		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+			AD1816A_TIMER_ENABLE, 0xffff);
+	}
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return 0;
+}
+
+static int snd_ad1816a_timer_stop(struct snd_timer *timer)
+{
+	unsigned long flags;
+	struct snd_ad1816a *chip = snd_timer_chip(timer);
+	spin_lock_irqsave(&chip->lock, flags);
+
+	snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
+		AD1816A_TIMER_ENABLE, 0x0000);
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return 0;
+}
+
+static struct snd_timer_hardware snd_ad1816a_timer_table = {
+	.flags =	SNDRV_TIMER_HW_AUTO,
+	.resolution =	10000,
+	.ticks =	65535,
+	.open =		snd_ad1816a_timer_open,
+	.close =	snd_ad1816a_timer_close,
+	.c_resolution =	snd_ad1816a_timer_resolution,
+	.start =	snd_ad1816a_timer_start,
+	.stop =		snd_ad1816a_timer_stop,
+};
+
+static int snd_ad1816a_playback_open(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int error;
+
+	if ((error = snd_ad1816a_open(chip, AD1816A_MODE_PLAYBACK)) < 0)
+		return error;
+	runtime->hw = snd_ad1816a_playback;
+	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
+	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
+	chip->playback_substream = substream;
+	return 0;
+}
+
+static int snd_ad1816a_capture_open(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int error;
+
+	if ((error = snd_ad1816a_open(chip, AD1816A_MODE_CAPTURE)) < 0)
+		return error;
+	runtime->hw = snd_ad1816a_capture;
+	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
+	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
+	chip->capture_substream = substream;
+	return 0;
+}
+
+static int snd_ad1816a_playback_close(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+
+	chip->playback_substream = NULL;
+	snd_ad1816a_close(chip, AD1816A_MODE_PLAYBACK);
+	return 0;
+}
+
+static int snd_ad1816a_capture_close(struct snd_pcm_substream *substream)
+{
+	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
+
+	chip->capture_substream = NULL;
+	snd_ad1816a_close(chip, AD1816A_MODE_CAPTURE);
+	return 0;
+}
+
+
+static void snd_ad1816a_init(struct snd_ad1816a *chip)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
+	snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
+		AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
+	snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
+		AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
+	snd_ad1816a_write(chip, AD1816A_INTERRUPT_ENABLE, 0x0000);
+	snd_ad1816a_write_mask(chip, AD1816A_CHIP_CONFIG,
+		AD1816A_CAPTURE_NOT_EQUAL | AD1816A_WSS_ENABLE, 0xffff);
+	snd_ad1816a_write(chip, AD1816A_DSP_CONFIG, 0x0000);
+	snd_ad1816a_write(chip, AD1816A_POWERDOWN_CTRL, 0x0000);
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+}
+
+#ifdef CONFIG_PM
+void snd_ad1816a_suspend(struct snd_ad1816a *chip)
+{
+	int reg;
+	unsigned long flags;
+
+	snd_pcm_suspend_all(chip->pcm);
+	spin_lock_irqsave(&chip->lock, flags);
+	for (reg = 0; reg < 48; reg++)
+		chip->image[reg] = snd_ad1816a_read(chip, reg);
+	spin_unlock_irqrestore(&chip->lock, flags);
+}
+
+void snd_ad1816a_resume(struct snd_ad1816a *chip)
+{
+	int reg;
+	unsigned long flags;
+
+	snd_ad1816a_init(chip);
+	spin_lock_irqsave(&chip->lock, flags);
+	for (reg = 0; reg < 48; reg++)
+		snd_ad1816a_write(chip, reg, chip->image[reg]);
+	spin_unlock_irqrestore(&chip->lock, flags);
+}
+#endif
+
+static int snd_ad1816a_probe(struct snd_ad1816a *chip)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	switch (chip->version = snd_ad1816a_read(chip, AD1816A_VERSION_ID)) {
+	case 0:
+		chip->hardware = AD1816A_HW_AD1815;
+		break;
+	case 1:
+		chip->hardware = AD1816A_HW_AD18MAX10;
+		break;
+	case 3:
+		chip->hardware = AD1816A_HW_AD1816A;
+		break;
+	default:
+		chip->hardware = AD1816A_HW_AUTO;
+	}
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return 0;
+}
+
+static int snd_ad1816a_free(struct snd_ad1816a *chip)
+{
+	release_and_free_resource(chip->res_port);
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *) chip);
+	if (chip->dma1 >= 0) {
+		snd_dma_disable(chip->dma1);
+		free_dma(chip->dma1);
+	}
+	if (chip->dma2 >= 0) {
+		snd_dma_disable(chip->dma2);
+		free_dma(chip->dma2);
+	}
+	return 0;
+}
+
+static int snd_ad1816a_dev_free(struct snd_device *device)
+{
+	struct snd_ad1816a *chip = device->device_data;
+	return snd_ad1816a_free(chip);
+}
+
+static const char *snd_ad1816a_chip_id(struct snd_ad1816a *chip)
+{
+	switch (chip->hardware) {
+	case AD1816A_HW_AD1816A: return "AD1816A";
+	case AD1816A_HW_AD1815:	return "AD1815";
+	case AD1816A_HW_AD18MAX10: return "AD18max10";
+	default:
+		snd_printk(KERN_WARNING "Unknown chip version %d:%d.\n",
+			chip->version, chip->hardware);
+		return "AD1816A - unknown";
+	}
+}
+
+int snd_ad1816a_create(struct snd_card *card,
+		       unsigned long port, int irq, int dma1, int dma2,
+		       struct snd_ad1816a *chip)
+{
+        static struct snd_device_ops ops = {
+		.dev_free =	snd_ad1816a_dev_free,
+	};
+	int error;
+
+	chip->irq = -1;
+	chip->dma1 = -1;
+	chip->dma2 = -1;
+
+	if ((chip->res_port = request_region(port, 16, "AD1816A")) == NULL) {
+		snd_printk(KERN_ERR "ad1816a: can't grab port 0x%lx\n", port);
+		snd_ad1816a_free(chip);
+		return -EBUSY;
+	}
+	if (request_irq(irq, snd_ad1816a_interrupt, 0, "AD1816A", (void *) chip)) {
+		snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
+		snd_ad1816a_free(chip);
+		return -EBUSY;
+	}
+	chip->irq = irq;
+	if (request_dma(dma1, "AD1816A - 1")) {
+		snd_printk(KERN_ERR "ad1816a: can't grab DMA1 %d\n", dma1);
+		snd_ad1816a_free(chip);
+		return -EBUSY;
+	}
+	chip->dma1 = dma1;
+	if (request_dma(dma2, "AD1816A - 2")) {
+		snd_printk(KERN_ERR "ad1816a: can't grab DMA2 %d\n", dma2);
+		snd_ad1816a_free(chip);
+		return -EBUSY;
+	}
+	chip->dma2 = dma2;
+
+	chip->card = card;
+	chip->port = port;
+	spin_lock_init(&chip->lock);
+
+	if ((error = snd_ad1816a_probe(chip))) {
+		snd_ad1816a_free(chip);
+		return error;
+	}
+
+	snd_ad1816a_init(chip);
+
+	/* Register device */
+	if ((error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+		snd_ad1816a_free(chip);
+		return error;
+	}
+
+	return 0;
+}
+
+static struct snd_pcm_ops snd_ad1816a_playback_ops = {
+	.open =		snd_ad1816a_playback_open,
+	.close =	snd_ad1816a_playback_close,
+	.ioctl =	snd_pcm_lib_ioctl,
+	.hw_params =	snd_ad1816a_hw_params,
+	.hw_free =	snd_ad1816a_hw_free,
+	.prepare =	snd_ad1816a_playback_prepare,
+	.trigger =	snd_ad1816a_playback_trigger,
+	.pointer =	snd_ad1816a_playback_pointer,
+};
+
+static struct snd_pcm_ops snd_ad1816a_capture_ops = {
+	.open =		snd_ad1816a_capture_open,
+	.close =	snd_ad1816a_capture_close,
+	.ioctl =	snd_pcm_lib_ioctl,
+	.hw_params =	snd_ad1816a_hw_params,
+	.hw_free =	snd_ad1816a_hw_free,
+	.prepare =	snd_ad1816a_capture_prepare,
+	.trigger =	snd_ad1816a_capture_trigger,
+	.pointer =	snd_ad1816a_capture_pointer,
+};
+
+int snd_ad1816a_pcm(struct snd_ad1816a *chip, int device)
+{
+	int error;
+	struct snd_pcm *pcm;
+
+	if ((error = snd_pcm_new(chip->card, "AD1816A", device, 1, 1, &pcm)))
+		return error;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1816a_playback_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1816a_capture_ops);
+
+	pcm->private_data = chip;
+	pcm->info_flags = (chip->dma1 == chip->dma2 ) ? SNDRV_PCM_INFO_JOINT_DUPLEX : 0;
+
+	strcpy(pcm->name, snd_ad1816a_chip_id(chip));
+	snd_ad1816a_init(chip);
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+					      snd_dma_isa_data(),
+					      64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
+
+	chip->pcm = pcm;
+	return 0;
+}
+
+int snd_ad1816a_timer(struct snd_ad1816a *chip, int device)
+{
+	struct snd_timer *timer;
+	struct snd_timer_id tid;
+	int error;
+
+	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
+	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
+	tid.card = chip->card->number;
+	tid.device = device;
+	tid.subdevice = 0;
+	if ((error = snd_timer_new(chip->card, "AD1816A", &tid, &timer)) < 0)
+		return error;
+	strcpy(timer->name, snd_ad1816a_chip_id(chip));
+	timer->private_data = chip;
+	chip->timer = timer;
+	timer->hw = snd_ad1816a_timer_table;
+	return 0;
+}
+
+/*
+ *
+ */
+
+static int snd_ad1816a_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+	static const char * const texts[8] = {
+		"Line", "Mix", "CD", "Synth", "Video",
+		"Mic", "Phone",
+	};
+
+	return snd_ctl_enum_info(uinfo, 2, 7, texts);
+}
+
+static int snd_ad1816a_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	unsigned short val;
+	
+	spin_lock_irqsave(&chip->lock, flags);
+	val = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL);
+	spin_unlock_irqrestore(&chip->lock, flags);
+	ucontrol->value.enumerated.item[0] = (val >> 12) & 7;
+	ucontrol->value.enumerated.item[1] = (val >> 4) & 7;
+	return 0;
+}
+
+static int snd_ad1816a_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	unsigned short val;
+	int change;
+	
+	if (ucontrol->value.enumerated.item[0] > 6 ||
+	    ucontrol->value.enumerated.item[1] > 6)
+		return -EINVAL;
+	val = (ucontrol->value.enumerated.item[0] << 12) |
+	      (ucontrol->value.enumerated.item[1] << 4);
+	spin_lock_irqsave(&chip->lock, flags);
+	change = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL) != val;
+	snd_ad1816a_write(chip, AD1816A_ADC_SOURCE_SEL, val);
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return change;
+}
+
+#define AD1816A_SINGLE_TLV(xname, reg, shift, 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_ad1816a_info_single, \
+  .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
+  .tlv = { .p = (xtlv) } }
+#define AD1816A_SINGLE(xname, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_single, \
+  .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
+
+static int snd_ad1816a_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_ad1816a_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	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;
+	
+	spin_lock_irqsave(&chip->lock, flags);
+	ucontrol->value.integer.value[0] = (snd_ad1816a_read(chip, reg) >> shift) & mask;
+	spin_unlock_irqrestore(&chip->lock, flags);
+	if (invert)
+		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
+	return 0;
+}
+
+static int snd_ad1816a_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	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;
+	int change;
+	unsigned short old_val, val;
+	
+	val = (ucontrol->value.integer.value[0] & mask);
+	if (invert)
+		val = mask - val;
+	val <<= shift;
+	spin_lock_irqsave(&chip->lock, flags);
+	old_val = snd_ad1816a_read(chip, reg);
+	val = (old_val & ~(mask << shift)) | val;
+	change = val != old_val;
+	snd_ad1816a_write(chip, reg, val);
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return change;
+}
+
+#define AD1816A_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_ad1816a_info_double,		\
+  .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
+  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
+  .tlv = { .p = (xtlv) } }
+
+#define AD1816A_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_double, \
+  .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
+  .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
+
+static int snd_ad1816a_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_ad1816a_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	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 val;
+	
+	spin_lock_irqsave(&chip->lock, flags);
+	val = snd_ad1816a_read(chip, reg);
+	ucontrol->value.integer.value[0] = (val >> shift_left) & mask;
+	ucontrol->value.integer.value[1] = (val >> shift_right) & mask;
+	spin_unlock_irqrestore(&chip->lock, flags);
+	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_ad1816a_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	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;
+	int change;
+	unsigned short old_val, val1, val2;
+	
+	val1 = ucontrol->value.integer.value[0] & mask;
+	val2 = ucontrol->value.integer.value[1] & mask;
+	if (invert) {
+		val1 = mask - val1;
+		val2 = mask - val2;
+	}
+	val1 <<= shift_left;
+	val2 <<= shift_right;
+	spin_lock_irqsave(&chip->lock, flags);
+	old_val = snd_ad1816a_read(chip, reg);
+	val1 = (old_val & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
+	change = val1 != old_val;
+	snd_ad1816a_write(chip, reg, val1);
+	spin_unlock_irqrestore(&chip->lock, flags);
+	return change;
+}
+
+static const DECLARE_TLV_DB_SCALE(db_scale_4bit, -4500, 300, 0);
+static const DECLARE_TLV_DB_SCALE(db_scale_5bit, -4650, 150, 0);
+static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
+static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
+static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
+
+static struct snd_kcontrol_new snd_ad1816a_controls[] = {
+AD1816A_DOUBLE("Master Playback Switch", AD1816A_MASTER_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("Master Playback Volume", AD1816A_MASTER_ATT, 8, 0, 31, 1,
+		   db_scale_5bit),
+AD1816A_DOUBLE("PCM Playback Switch", AD1816A_VOICE_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("PCM Playback Volume", AD1816A_VOICE_ATT, 8, 0, 63, 1,
+		   db_scale_6bit),
+AD1816A_DOUBLE("Line Playback Switch", AD1816A_LINE_GAIN_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("Line Playback Volume", AD1816A_LINE_GAIN_ATT, 8, 0, 31, 1,
+		   db_scale_5bit_12db_max),
+AD1816A_DOUBLE("CD Playback Switch", AD1816A_CD_GAIN_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("CD Playback Volume", AD1816A_CD_GAIN_ATT, 8, 0, 31, 1,
+		   db_scale_5bit_12db_max),
+AD1816A_DOUBLE("Synth Playback Switch", AD1816A_SYNTH_GAIN_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("Synth Playback Volume", AD1816A_SYNTH_GAIN_ATT, 8, 0, 31, 1,
+		   db_scale_5bit_12db_max),
+AD1816A_DOUBLE("FM Playback Switch", AD1816A_FM_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("FM Playback Volume", AD1816A_FM_ATT, 8, 0, 63, 1,
+		   db_scale_6bit),
+AD1816A_SINGLE("Mic Playback Switch", AD1816A_MIC_GAIN_ATT, 15, 1, 1),
+AD1816A_SINGLE_TLV("Mic Playback Volume", AD1816A_MIC_GAIN_ATT, 8, 31, 1,
+		   db_scale_5bit_12db_max),
+AD1816A_SINGLE("Mic Boost", AD1816A_MIC_GAIN_ATT, 14, 1, 0),
+AD1816A_DOUBLE("Video Playback Switch", AD1816A_VID_GAIN_ATT, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("Video Playback Volume", AD1816A_VID_GAIN_ATT, 8, 0, 31, 1,
+		   db_scale_5bit_12db_max),
+AD1816A_SINGLE("Phone Capture Switch", AD1816A_PHONE_IN_GAIN_ATT, 15, 1, 1),
+AD1816A_SINGLE_TLV("Phone Capture Volume", AD1816A_PHONE_IN_GAIN_ATT, 0, 15, 1,
+		   db_scale_4bit),
+AD1816A_SINGLE("Phone Playback Switch", AD1816A_PHONE_OUT_ATT, 7, 1, 1),
+AD1816A_SINGLE_TLV("Phone Playback Volume", AD1816A_PHONE_OUT_ATT, 0, 31, 1,
+		   db_scale_5bit),
+{
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Capture Source",
+	.info = snd_ad1816a_info_mux,
+	.get = snd_ad1816a_get_mux,
+	.put = snd_ad1816a_put_mux,
+},
+AD1816A_DOUBLE("Capture Switch", AD1816A_ADC_PGA, 15, 7, 1, 1),
+AD1816A_DOUBLE_TLV("Capture Volume", AD1816A_ADC_PGA, 8, 0, 15, 0,
+		   db_scale_rec_gain),
+AD1816A_SINGLE("3D Control - Switch", AD1816A_3D_PHAT_CTRL, 15, 1, 1),
+AD1816A_SINGLE("3D Control - Level", AD1816A_3D_PHAT_CTRL, 0, 15, 0),
+};
+                                        
+int snd_ad1816a_mixer(struct snd_ad1816a *chip)
+{
+	struct snd_card *card;
+	unsigned int idx;
+	int err;
+
+	if (snd_BUG_ON(!chip || !chip->card))
+		return -EINVAL;
+
+	card = chip->card;
+
+	strcpy(card->mixername, snd_ad1816a_chip_id(chip));
+
+	for (idx = 0; idx < ARRAY_SIZE(snd_ad1816a_controls); idx++) {
+		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ad1816a_controls[idx], chip))) < 0)
+			return err;
+	}
+	return 0;
+}