path: root/recipes/linux/linux-2.6.18/at73c213-alsa-driver.patch

From nobody Mon Sep 17 00:00:00 2001
From: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Date: Fri Apr 28 15:30:44 2006 +0200
Subject: [PATCH] at73c213 ALSA driver

This driver uses the SSC and SPI modules to communicate with an at73c213
sound chip on the AT32STK1000.

---

 sound/avr32/Kconfig    |   20 
 sound/avr32/Makefile   |    3 
 sound/avr32/at73c213.c | 1296 +++++++++++++++++++++++++++++++++++++++++++++++++
 sound/avr32/at73c213.h |  120 ++++
 4 files changed, 1439 insertions(+)
 create mode 100644 sound/avr32/at73c213.c
 create mode 100644 sound/avr32/at73c213.h

859730d5cbe00b7935c4e30d179c5c5b096deb3c
Index: linux-2.6.18-avr32/sound/avr32/Kconfig
===================================================================
--- linux-2.6.18-avr32.orig/sound/avr32/Kconfig	2006-11-02 15:56:20.000000000 +0100
+++ linux-2.6.18-avr32/sound/avr32/Kconfig	2006-11-02 15:56:20.000000000 +0100
@@ -28,4 +28,24 @@ config SND_ATMEL_AC97C_USE_PDC
 	  Say Y if PDC (Peripheral DMA Controller) is used for DMA transfers
 	  to/from the Atmel AC97C instead of using the generic DMA framework.
 
+config SND_AT73C213
+	tristate "Atmel AT73C213 DAC driver"
+	depends on SND && SPI_ATMEL
+	select SND_PCM
+	help
+	  Say Y here if you want to use the Atmel AT73C213 external
+	  DAC on the ATSTK1000 development board.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called snd-at73c213.
+
+config SND_AT73C213_USE_ALSA_MALLOC_CALLS
+	bool "Use the built-in malloc calls in the alsa driver"
+	default n
+	depends on SND_AT73C213
+	help
+	  Say Y if the built-in malloc calls in the alsa driver should be
+	  used instead of the native dma_alloc_coherent and dma_free_coherent
+	  function calls. Enabling this feature may brake the rmmod feature.
+
 endmenu
Index: linux-2.6.18-avr32/sound/avr32/Makefile
===================================================================
--- linux-2.6.18-avr32.orig/sound/avr32/Makefile	2006-11-02 15:56:20.000000000 +0100
+++ linux-2.6.18-avr32/sound/avr32/Makefile	2006-11-02 15:56:20.000000000 +0100
@@ -4,3 +4,6 @@
 
 snd-atmel-ac97-objs		:= ac97c.o
 obj-$(CONFIG_SND_ATMEL_AC97)	+= snd-atmel-ac97.o
+
+snd-at73c213-objs		:= at73c213.o
+obj-$(CONFIG_SND_AT73C213)	+= snd-at73c213.o
Index: linux-2.6.18-avr32/sound/avr32/at73c213.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.18-avr32/sound/avr32/at73c213.c	2006-11-02 16:01:55.000000000 +0100
@@ -0,0 +1,1296 @@
+/*
+ * Driver for the at73c213 16-bit stereo DAC on Atmel ATSTK1000
+ *
+ * Copyright (C) 2006 Atmel Norway
+ *
+ * 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.
+ *
+ * The full GNU General Public License is included in this
+ * distribution in the file called COPYING.
+ */
+#undef DEBUG
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kmod.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/initval.h>
+#include <sound/driver.h>
+#include <sound/control.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#ifndef SND_AT73C213_USE_ALSA_MALLOC_CALLS
+#include <sound/memalloc.h>
+#endif
+
+#include <linux/spi/spi.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+
+#include "at73c213.h"
+
+/* module parameters */
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+
+/* Register defines */
+#define PIOA_BASE	0xFFE02800
+#define SSC0_BASE	0xFFE01C00
+#define PM_BASE		0xFFF00000
+
+#define PM_CKSEL	0x04
+#define PM_APBAMASK	0x10
+#define PM_GCCTRL	0x60
+
+#define PIO_PER		0x00
+#define PIO_PDR		0x04
+#define PIO_PUER	0x64
+#define PIO_ASR		0x70
+#define PIO_BSR		0x74
+
+#define SSC_CMR		0x04
+#define SSC_CR		0x00
+#define SSC_TCMR	0x18
+#define SSC_TFMR	0x1C
+
+/* SSC register definitions */
+#define SSC_CR		0x00
+#define SSC_CMR		0x04
+#define SSC_TCMR	0x18
+#define SSC_TFMR	0x1C
+#define SSC_THR		0x24
+#define SSC_SR		0x40
+#define SSC_IER		0x44
+#define SSC_IDR		0x48
+#define SSC_IMR		0x4C
+
+/* SSC fields definitions */
+#define SSC_CR_TXEN	0x00000100
+#define SSC_CR_TXDIS	0x00000200
+#define SSC_CR_SWRST	0x00008000
+
+/* SSC interrupt definitions */
+#define SSC0_IRQ	10
+#define SSC_INT_ENDTX	0x00000004
+#define SSC_INT_TXBUFE	0x00000008
+
+/* PDC register definitions */
+#define PDC_RPR		0x100
+#define PDC_RCR		0x104
+#define PDC_TPR		0x108
+#define PDC_TCR		0x10c
+#define PDC_RNPR	0x110
+#define PDC_RNCR	0x114
+#define PDC_TNPR	0x118
+#define PDC_TNCR	0x11c
+#define PDC_PTCR	0x120
+#define PDC_PTSR	0x124
+
+/* PDC fields definitions */
+#define PDC_PTCR_RXTEN	0x0001
+#define PDC_PTCR_RXTDIS	0x0002
+#define PDC_PTCR_TXTEN	0x0100
+#define PDC_PTCR_TXTDIS 0x0200
+
+static int bitrate;
+static int gclk_div;
+static int ssc_div;
+static int spi = 0;
+static int ssc = 1;
+
+module_param(spi, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+MODULE_PARM_DESC(spi, "Which SPI interface to use to communicate with the at73c213");
+module_param(ssc, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+MODULE_PARM_DESC(ssc, "Which SSC interface to use to communicate with the at73c213");
+
+/* Initial AT73C213 register values */
+static unsigned char snd_at73c213_original_image[18] =
+{
+	0x00,	/* 00 - CTRL    */
+	0x05,	/* 01 - LLIG    */
+	0x05,	/* 02 - RLIG    */
+	0x08,	/* 03 - LPMG    */
+	0x08,	/* 04 - RPMG    */
+	0x00,	/* 05 - LLOG    */
+	0x00,	/* 06 - RLOG    */
+	0x22,	/* 07 - OLC     */
+	0x09,	/* 08 - MC      */
+	0x00,	/* 09 - CSFC    */
+	0x00,	/* 0A - MISC    */
+	0x00,	/* 0B -         */
+	0x00,	/* 0C - PRECH   */
+	0x05,	/* 0D - AUXG    */
+	0x00,	/* 0E -         */
+	0x00,	/* 0F -         */
+	0x00,	/* 10 - RST     */
+	0x00,	/* 11 - PA_CTRL */
+};
+
+/* chip-specific data */
+struct snd_at73c213 {
+	snd_card_t		*card;
+	snd_pcm_t		*pcm;
+	snd_pcm_substream_t	*substream;
+	int			irq;
+	int			period;
+	void __iomem		*regs;
+	struct clk		*ssc_clk;
+	struct spi_device	*spi;
+	u8			spi_wbuffer[2];
+	u8			spi_rbuffer[2];
+	/* image of the SPI registers in AT73C213 */
+	u8			image[18];
+	spinlock_t		lock;
+	struct platform_device	*pdev;
+};
+
+#define get_chip(card) ((struct snd_at73c213 *)card->private_data)
+
+static int
+snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val)
+{
+	struct spi_message msg;
+	struct spi_transfer msg_xfer = {
+		.len		= 2,
+		.cs_change	= 0,
+	};
+
+	spi_message_init(&msg);
+
+	chip->spi_wbuffer[0] = reg;
+	chip->spi_wbuffer[1] = val;
+
+	msg_xfer.tx_buf = chip->spi_wbuffer;
+	msg_xfer.rx_buf = chip->spi_rbuffer;
+	spi_message_add_tail(&msg_xfer, &msg);
+
+	return spi_sync(chip->spi, &msg);
+}
+
+#define write_reg(_spi, reg, val)				\
+	do {							\
+		retval = snd_at73c213_write_reg(_spi, reg, val);	\
+		if (retval)					\
+			goto out;				\
+	} while (0)
+
+static snd_pcm_hardware_t snd_at73c213_playback_hw = {
+	.info		= SNDRV_PCM_INFO_INTERLEAVED |
+			  SNDRV_PCM_INFO_BLOCK_TRANSFER,
+	.formats	= SNDRV_PCM_FMTBIT_S16_BE,
+	.rates		= SNDRV_PCM_RATE_CONTINUOUS,
+	.rate_min	= 8000,  /* This will be overwritten with bitrate */
+	.rate_max	= 50000, /* This will be overwritten with bitrate */
+	.channels_min	= 2,
+	.channels_max	= 2,
+	.buffer_bytes_max = 64 * 1024 - 1,
+	.period_bytes_min = 512,
+	.period_bytes_max = 64 * 1024 - 1,
+	.periods_min	= 4,
+	.periods_max	= 1024,
+};
+
+/* calculate and set bitrate and divisions */
+static int snd_at73c213_set_bitrate_and_div(void)
+{
+	extern struct avr32_cpuinfo boot_cpu_data;
+	unsigned long pll0_hz, apba_hz;
+	unsigned long apba_realdiv, gclk_realdiv, ssc_realdiv, wanted_bitrate;
+	char cpusel, ahbsel, apbasel;
+	int regval;
+
+	regval = __raw_readl((void __iomem *)PM_BASE + PM_CKSEL);
+	wanted_bitrate = 48000;
+
+	cpusel = regval & 0x07;
+	ahbsel = (regval>>8) & 0x07;
+	apbasel = (regval>>16) & 0x07;
+
+	/* FIXME: Use the clk framework for this */
+	if ((regval&(1<<7)) != 0) {
+		pll0_hz = clk_get_rate(boot_cpu_data.clk)/(1<<(cpusel+1));
+	} else {
+		pll0_hz = clk_get_rate(boot_cpu_data.clk);
+	}
+
+	if ((regval&(1<<23)) != 0) {
+		apba_hz = pll0_hz/(1<<(apbasel+1));
+		apba_realdiv = (1<<(apbasel+1));
+	} else {
+		apba_hz = pll0_hz;
+		apba_realdiv = 1;
+	}
+
+calculate:
+	/* Adjust bitrate as close as possible to 48000 Hz */
+	gclk_realdiv = pll0_hz/(wanted_bitrate*256);
+	ssc_realdiv = 2 * apba_realdiv * gclk_realdiv;
+
+	if ((gclk_realdiv % 2) == 0)
+		goto setbitrates;
+
+	if(wanted_bitrate >= 22050 && wanted_bitrate <= 48000)
+		wanted_bitrate -= 50;
+	else if (wanted_bitrate < 22050)
+		wanted_bitrate = 48050;
+	else if (wanted_bitrate <= 50000)
+		wanted_bitrate += 50;
+	else {
+		printk(KERN_ERR "at73c213 could not set dividers for a valid bitrate\n");
+		return -EINVAL;
+	}
+
+	goto calculate;
+
+setbitrates:
+	bitrate = pll0_hz/(gclk_realdiv*256);
+	gclk_div = (gclk_realdiv/2)-1;
+	ssc_realdiv = 2*apba_realdiv*gclk_realdiv;
+	ssc_div = ssc_realdiv/(2*apba_realdiv);
+
+	printk(KERN_INFO "at73c213: bitrate is %d Hz\n", bitrate);
+
+	return 0;
+}
+
+/* open callback */
+static int snd_at73c213_pcm_open(snd_pcm_substream_t *substream)
+{
+	struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+
+	snd_at73c213_playback_hw.rate_min = bitrate;
+	snd_at73c213_playback_hw.rate_max = bitrate;
+	runtime->hw = snd_at73c213_playback_hw;
+	chip->substream = substream;
+
+	return 0;
+}
+
+/* close callback */
+static int snd_at73c213_pcm_close(snd_pcm_substream_t *substream)
+{
+	struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+	chip->substream = NULL;
+	return 0;
+}
+
+/* hw_params callback */
+static int snd_at73c213_pcm_hw_params(snd_pcm_substream_t *substream,
+				 snd_pcm_hw_params_t *hw_params)
+{
+#ifdef SND_AT73C213_USE_ALSA_MALLOC_CALLS
+	return snd_pcm_lib_malloc_pages(substream,
+					params_buffer_bytes(hw_params));
+#else
+	int pg;
+	size_t size = params_buffer_bytes(hw_params);
+	struct snd_pcm_runtime *runtime;
+	struct snd_dma_buffer *dmab = NULL;
+
+	substream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV;
+	snd_assert(substream != NULL, return -EINVAL);
+	runtime = substream->runtime;
+	snd_assert(runtime != NULL, return -EINVAL);
+
+	/* check if buffer is already allocated */
+	if (runtime->dma_buffer_p) {
+		size_t size_previouse;
+		int pg_previouse;
+
+		/* new buffer is smaler than previouse allocated buffer */
+		if (runtime->dma_buffer_p->bytes >= size) {
+			runtime->dma_bytes = size;
+			return 0; /* don't change buffer size */
+		}
+
+		size_previouse = runtime->dma_buffer_p->bytes;
+		pg_previouse = get_order(size_previouse);
+
+		dma_free_coherent(runtime->dma_buffer_p->dev.dev,
+				PAGE_SIZE << pg_previouse,
+				runtime->dma_buffer_p->area,
+				runtime->dma_buffer_p->addr);
+
+		kfree(runtime->dma_buffer_p);
+	}
+
+	dmab = kzalloc(sizeof(*dmab), GFP_KERNEL);
+	if (!dmab)
+		return -ENOMEM;
+
+	dmab->dev = substream->dma_buffer.dev;
+	dmab->bytes = 0;
+
+	pg = get_order(size);
+
+	dmab->area = dma_alloc_coherent(
+			substream->dma_buffer.dev.dev,
+			PAGE_SIZE << pg,
+			(dma_addr_t *)&dmab->addr,
+			GFP_KERNEL);
+
+	if (!dmab->area) {
+		kfree(dmab);
+		return -ENOMEM;
+	}
+
+	dmab->bytes = size;
+	snd_pcm_set_runtime_buffer(substream, dmab);
+	runtime->dma_bytes = size;
+	return 1;
+#endif
+}
+
+/* hw_free callback */
+static int snd_at73c213_pcm_hw_free(snd_pcm_substream_t *substream)
+{
+#ifdef SND_AT73C213_USE_ALSA_MALLOC_CALLS
+	return snd_pcm_lib_free_pages(substream);
+#else
+	int pg;
+	struct snd_pcm_runtime *runtime;
+	struct snd_dma_buffer *dmab = NULL;
+
+	snd_assert(substream != NULL, return -EINVAL);
+	runtime = substream->runtime;
+	snd_assert(runtime != NULL, return -EINVAL);
+	dmab = runtime->dma_buffer_p;
+
+	if (!dmab)
+		return 0;
+
+	if (!dmab->area)
+		return 0;
+
+	pg = get_order(dmab->bytes);
+	dma_free_coherent(dmab->dev.dev, PAGE_SIZE << pg, dmab->area, dmab->addr);
+	kfree(runtime->dma_buffer_p);
+	snd_pcm_set_runtime_buffer(substream, NULL);
+	return 0;
+#endif
+}
+
+/* prepare callback */
+static int snd_at73c213_pcm_prepare(snd_pcm_substream_t *substream)
+{
+	struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+	struct platform_device *pdev = chip->pdev;
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	int block_size;
+
+	block_size = frames_to_bytes(runtime, runtime->period_size);
+
+	chip->period = 0;
+
+	/* Make sure that our data are actually readable by the SSC */
+	dma_sync_single_for_device(&pdev->dev, runtime->dma_addr,
+			block_size, DMA_TO_DEVICE);
+	dma_sync_single_for_device(&pdev->dev, runtime->dma_addr + block_size,
+			block_size, DMA_TO_DEVICE);
+
+	__raw_writel(runtime->dma_addr, chip->regs + PDC_TPR);
+	__raw_writel(runtime->period_size * 2, chip->regs + PDC_TCR);
+	__raw_writel(runtime->dma_addr + block_size, chip->regs + PDC_TNPR);
+	__raw_writel(runtime->period_size * 2, chip->regs + PDC_TNCR);
+
+	return 0;
+}
+
+/* trigger callback */
+static int snd_at73c213_pcm_trigger(snd_pcm_substream_t *substream,
+				   int cmd)
+{
+	struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+	int retval = 0;
+	int flags = 0;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		__raw_writel(SSC_INT_ENDTX, chip->regs + SSC_IER);
+		__raw_writel(PDC_PTCR_TXTEN, chip->regs + PDC_PTCR);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		__raw_writel(PDC_PTCR_TXTDIS, chip->regs + PDC_PTCR);
+		__raw_writel(SSC_INT_ENDTX, chip->regs + SSC_IDR);
+		break;
+	default:
+		printk(KERN_WARNING "at73c213: spuriouse command %x\n", cmd);
+		retval = -EINVAL;
+		break;
+	}
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return retval;
+}
+
+/* pointer callback */
+static snd_pcm_uframes_t snd_at73c213_pcm_pointer(snd_pcm_substream_t *substream)
+{
+	struct snd_at73c213 *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	snd_pcm_uframes_t pos;
+	unsigned long bytes;
+
+	bytes = __raw_readl(chip->regs + PDC_TPR) - runtime->dma_addr;
+
+	pos = bytes_to_frames(runtime, bytes);
+	if (pos >= runtime->buffer_size)
+		pos -= runtime->buffer_size;
+
+	return pos;
+}
+
+/* operators */
+static snd_pcm_ops_t at73c213_playback_ops = {
+	.open		= snd_at73c213_pcm_open,
+	.close		= snd_at73c213_pcm_close,
+	.ioctl		= snd_pcm_lib_ioctl,
+	.hw_params	= snd_at73c213_pcm_hw_params,
+	.hw_free	= snd_at73c213_pcm_hw_free,
+	.prepare	= snd_at73c213_pcm_prepare,
+	.trigger	= snd_at73c213_pcm_trigger,
+	.pointer	= snd_at73c213_pcm_pointer,
+};
+
+/* free a pcm device */
+static void snd_at73c213_pcm_free(snd_pcm_t *pcm)
+{
+	struct snd_at73c213 *chip = snd_pcm_chip(pcm);
+	if (chip->pcm != 0 ) {
+#ifdef SND_AT73C213_USE_ALSA_MALLOC_CALLS
+		snd_pcm_lib_preallocate_free_for_all(chip->pcm);
+#endif
+		chip->pcm = NULL;
+	}
+}
+
+/* create a new pcm device */
+static int __devinit snd_at73c213_new_pcm(struct snd_at73c213 *chip, int device)
+{
+	snd_pcm_t *pcm;
+	int retval;
+
+	retval = snd_pcm_new(chip->card, chip->card->shortname, device, 1, 0, &pcm);
+	if (retval < 0)
+		return retval;
+
+	pcm->private_data = chip;
+	pcm->private_free = snd_at73c213_pcm_free;
+	pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER;
+	strcpy(pcm->name, "at73c213");
+	chip->pcm = pcm;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops);
+
+#ifdef SND_AT73C213_USE_ALSA_MALLOC_CALLS
+	snd_pcm_lib_preallocate_pages_for_all(chip->pcm, SNDRV_DMA_TYPE_DEV,
+			&chip->pdev->dev, 64 * 1024, 64 * 1024);
+#endif
+
+	return 0;
+}
+
+static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id,
+					 struct pt_regs *regs)
+{
+	struct snd_at73c213 *chip = dev_id;
+	struct platform_device *pdev = chip->pdev;
+	snd_pcm_runtime_t *runtime = chip->substream->runtime;
+	u32 status;
+	int offset, next_period, block_size;
+
+	spin_lock(&chip->lock);
+
+	block_size = frames_to_bytes(runtime, runtime->period_size);
+
+	status = __raw_readl(chip->regs + SSC_IMR);
+
+	if (status & SSC_INT_ENDTX) {
+		chip->period++;
+		if (chip->period == runtime->periods)
+			chip->period = 0;
+		next_period = chip->period + 1;
+		if (next_period == runtime->periods)
+			next_period = 0;
+
+		offset = block_size * next_period;
+
+		/* Make sure that our data are actually readable by the SSC */
+		dma_sync_single_for_device(&pdev->dev, runtime->dma_addr + offset,
+				block_size, DMA_TO_DEVICE);
+		__raw_writel(runtime->dma_addr + offset, chip->regs + PDC_TNPR);
+		__raw_writel(runtime->period_size * 2, chip->regs + PDC_TNCR);
+
+		if (next_period == 0) {
+			(void)__raw_readl(chip->regs + PDC_TPR);
+			(void)__raw_readl(chip->regs + PDC_TCR);
+		}
+	} else {
+		printk(KERN_WARNING
+		       "Spurious SSC interrupt, status = 0x%08lx\n",
+		       (unsigned long)status);
+		__raw_writel(status, chip->regs + SSC_IDR);
+	}
+
+	(void)__raw_readl(chip->regs + SSC_IMR);
+	spin_unlock(&chip->lock);
+
+	if (status & SSC_INT_ENDTX)
+		snd_pcm_period_elapsed(chip->substream);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * Mixer functions
+ */
+#if 0 /* Function not in use */
+static int snd_at73c213_mono_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	unsigned long 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;
+}
+#endif
+
+static int snd_at73c213_mono_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_at73c213 *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] = (chip->image[reg] >> shift) & mask;
+
+	if (invert)
+		ucontrol->value.integer.value[0] =
+			(mask - ucontrol->value.integer.value[0]);
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return 0;
+}
+
+static int snd_at73c213_mono_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_at73c213 *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, retval;
+	unsigned short val;
+
+	val = (ucontrol->value.integer.value[0] & mask);
+	if (invert)
+		val = mask - val;
+	val <<= shift;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	val = (chip->image[reg] & ~(mask << shift)) | val;
+	change = val != chip->image[reg];
+	write_reg(chip, reg, val);
+
+	chip->image[reg] = val;
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return change;
+
+out:
+	return retval;
+}
+
+static int snd_at73c213_stereo_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	int mask = (kcontrol->private_value >> 24) & 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_at73c213_stereo_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int left_reg = kcontrol->private_value & 0xff;
+	int right_reg = (kcontrol->private_value >> 8) & 0xff;
+	int shift_left = (kcontrol->private_value >> 16) & 0x07;
+	int shift_right = (kcontrol->private_value >> 19) & 0x07;
+	int mask = (kcontrol->private_value >> 24) & 0xff;
+	int invert = (kcontrol->private_value >> 22) & 1;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	ucontrol->value.integer.value[0] =
+		(chip->image[left_reg] >> shift_left) & mask;
+	ucontrol->value.integer.value[1] =
+		(chip->image[right_reg] >> shift_right) & mask;
+
+	if (invert) {
+		ucontrol->value.integer.value[0] =
+			(mask - ucontrol->value.integer.value[0]);
+		ucontrol->value.integer.value[1] =
+			(mask - ucontrol->value.integer.value[1]);
+	}
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return 0;
+}
+
+static int snd_at73c213_stereo_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int left_reg = kcontrol->private_value & 0xff;
+	int right_reg = (kcontrol->private_value >> 8) & 0xff;
+	int shift_left = (kcontrol->private_value >> 16) & 0x07;
+	int shift_right = (kcontrol->private_value >> 19) & 0x07;
+	int mask = (kcontrol->private_value >> 24) & 0xff;
+	int invert = (kcontrol->private_value >> 22) & 1;
+	int change, retval;
+	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;
+	}
+	val1 <<= shift_left;
+	val2 <<= shift_right;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
+	val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
+	change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
+	write_reg(chip, left_reg, val1);
+	write_reg(chip, right_reg, val2);
+
+	chip->image[left_reg] = val1;
+	chip->image[right_reg] = val2;
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return change;
+
+out:
+	return retval;
+}
+
+static int snd_at73c213_mono_switch_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+
+	return 0;
+}
+
+static int snd_at73c213_mono_switch_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int reg = kcontrol->private_value & 0xff;
+	int shift = (kcontrol->private_value >> 8) & 0xff;
+	int invert = (kcontrol->private_value >> 24) & 0xff;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & 0x01;
+
+	if (invert)
+		ucontrol->value.integer.value[0] =
+			(0x01 - ucontrol->value.integer.value[0]);
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return 0;
+}
+
+static int snd_at73c213_mono_switch_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_at73c213 *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, retval;
+	unsigned short val;
+
+	if (ucontrol->value.integer.value[0])
+		val = mask;
+	else
+		val = 0;
+
+	if (invert)
+		val = mask - val;
+	val <<= shift;
+
+	spin_lock_irqsave(&chip->lock, flags);
+
+	val |= (chip->image[reg] & ~(mask << shift));
+	change = val != chip->image[reg];
+
+	write_reg(chip, reg, val);
+
+	chip->image[reg] = val;
+
+	spin_unlock_irqrestore(&chip->lock, flags);
+
+	return change;
+
+out:
+	return retval;
+}
+
+static int snd_at73c213_pa_volume_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = ((kcontrol->private_value >> 16) & 0xFF) - 1;
+
+	return 0;
+}
+
+static int snd_at73c213_line_capture_volume_info(
+		struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = 14;
+	uinfo->value.integer.max = 31;
+
+	return 0;
+}
+
+static int snd_at73c213_aux_capture_volume_info(
+		struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 14;
+	uinfo->value.integer.max = 31;
+
+	return 0;
+}
+
+#define AT73C213_MONO(xname, xindex, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_at73c213_mono_info, \
+  .get = snd_at73c213_mono_get, .put = snd_at73c213_mono_put, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
+
+#define AT73C213_MONO_SWITCH(xname, xindex, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_at73c213_mono_switch_info, \
+  .get = snd_at73c213_mono_switch_get, .put = snd_at73c213_mono_switch_put, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
+
+#define AT73C213_STEREO(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_at73c213_stereo_info, \
+  .get = snd_at73c213_stereo_get, .put = snd_at73c213_stereo_put, \
+  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
+
+static struct snd_kcontrol_new snd_at73c213_controls[] __devinitdata = {
+AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1F, 1),
+AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1),
+AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1F, 1),
+AT73C213_STEREO("PCM Playback Switch", 0, DAC_LLOG, DAC_RLOG, 5, 5, 1, 1),
+AT73C213_MONO_SWITCH("Mono PA Playback Switch", 0, DAC_CTRL, DAC_CTRL_ONPADRV, 0x01, 0),
+{
+	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name	= "PA Playback Volume",
+	.index	= 0,
+	.info	= snd_at73c213_pa_volume_info,
+	.get	= snd_at73c213_mono_get,
+	.put	= snd_at73c213_mono_put,
+	.private_value	= PA_CTRL|(PA_CTRL_APAGAIN<<8)|(0x0F<<16)|(1<<24),
+},
+AT73C213_MONO_SWITCH("PA High Gain Playback Switch", 0, PA_CTRL, PA_CTRL_APALP, 0x01, 1),
+AT73C213_MONO_SWITCH("PA Playback Switch", 0, PA_CTRL, PA_CTRL_APAON, 0x01, 0),
+{
+	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name	= "Aux Capture Volume",
+	.index	= 0,
+	.info	= snd_at73c213_aux_capture_volume_info,
+	.get	= snd_at73c213_mono_get,
+	.put	= snd_at73c213_mono_put,
+	.private_value	= DAC_AUXG|(0<<8)|(0x1F<<16)|(1<<24),
+},
+AT73C213_MONO_SWITCH("Aux Capture Switch", 0, DAC_CTRL, DAC_CTRL_ONAUXIN, 0x01, 0),
+{
+	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name	= "Line Capture Volume",
+	.index	= 0,
+	.info	= snd_at73c213_line_capture_volume_info,
+	.get	= snd_at73c213_stereo_get,
+	.put	= snd_at73c213_stereo_put,
+	.private_value	= DAC_LLIG|(DAC_RLIG<<8)|(0<<16)|(0<<19)|(0x1F<<24)|(1<<22),
+},
+AT73C213_MONO_SWITCH("Line Capture Switch", 0, DAC_CTRL, 0, 0x03, 0),
+};
+
+static int __devinit snd_at73c213_mixer(struct snd_at73c213 *chip)
+{
+	struct snd_card *card;
+	int errval, idx;
+
+	if (chip == NULL || chip->pcm == NULL)
+		return -EINVAL;
+
+	card = chip->card;
+
+	strcpy(card->mixername, chip->pcm->name);
+
+	for (idx = 0; idx < ARRAY_SIZE(snd_at73c213_controls); idx++) {
+		if ((errval = snd_ctl_add(card,
+				       snd_ctl_new1(&snd_at73c213_controls[idx],
+						    chip))) < 0)
+			return errval;
+	}
+
+	return 0;
+}
+
+/*
+ * Device functions
+ */
+static int snd_at73c213_chip_init(struct snd_at73c213 *chip)
+{
+	int retval;
+	unsigned char dac_ctrl = 0;
+
+	/* XXX: Unmask the APB clock for SSC0 */
+	__raw_writel(__raw_readl((void __iomem *)PM_BASE + PM_APBAMASK)|(1<<7),
+			(void __iomem *)PM_BASE + PM_APBAMASK);
+
+	/* Wait for clock to be stable */
+	msleep(10);
+
+	retval = snd_at73c213_set_bitrate_and_div();
+	if (retval)
+		goto out;
+
+	/* Reset the SSC */
+	__raw_writel(SSC_CR_SWRST, chip->regs + SSC_CR);
+
+	/* Enable GCLK0 */
+	__raw_writel((1<<30), (void __iomem *)(PIOA_BASE + PIO_PDR));
+	__raw_writel((1<<30), (void __iomem *)(PIOA_BASE + PIO_ASR));
+	__raw_writel(((gclk_div<<8)|0x10|0x04|0x02), (void __iomem *)(PM_BASE + PM_GCCTRL));
+
+	/* Enable SSC and setup for I2S */
+	__raw_writel(ssc_div, chip->regs + SSC_CMR);
+
+	/* CKO, START, STTDLY, PERIOD */
+	__raw_writel((1<<2)|(4<<8)|(1<<16)|(15<<24), chip->regs + SSC_TCMR);
+
+	/* DATLEN, MSBF, DATNB, FSLEN, FSOS */
+	__raw_writel((15<<0)|(1<<7)|(1<<8)|(15<<16)|(1<<20), chip->regs + SSC_TFMR);
+
+	/* Initialize at73c213 on SPI bus */
+	/* Reset the device */
+	write_reg(chip, DAC_RST, 0x04);
+	msleep(1);
+	write_reg(chip, DAC_RST, 0x03);
+
+	/* Turn on precharge */
+	write_reg(chip, DAC_PRECH, 0xFF);
+	write_reg(chip, PA_CTRL, (1<<PA_CTRL_APAPRECH));
+	write_reg(chip, DAC_CTRL, (1<<DAC_CTRL_ONLNOL)|(1<<DAC_CTRL_ONLNOR));
+
+	msleep(50);
+
+	/* Stop precharging PA */
+	write_reg(chip, PA_CTRL, (1<<PA_CTRL_APALP)|0x0F);
+	chip->image[PA_CTRL] = (1<<PA_CTRL_APALP)|0x0F;
+
+	msleep(450);
+
+	/* Stop precharging, turn on master power */
+	write_reg(chip, DAC_PRECH, (1<<DAC_PRECH_ONMSTR));
+	chip->image[DAC_PRECH] = (1<<DAC_PRECH_ONMSTR);
+
+	msleep(1);
+
+	/* Turn on DAC */
+	dac_ctrl = (1<<DAC_CTRL_ONDACL)|(1<<DAC_CTRL_ONDACR)|
+			(1<<DAC_CTRL_ONLNOL)|(1<<DAC_CTRL_ONLNOR);
+
+	write_reg(chip, DAC_CTRL, dac_ctrl);
+	chip->image[DAC_CTRL] = dac_ctrl;
+
+	/* Mute sound */
+	write_reg(chip, DAC_LMPG, 0x3F);
+	chip->image[DAC_LMPG] = 0x3F;
+	write_reg(chip, DAC_RMPG, 0x3F);
+	chip->image[DAC_RMPG] = 0x3F;
+	write_reg(chip, DAC_LLOG, 0x3F);
+	chip->image[DAC_LLOG] = 0x3F;
+	write_reg(chip, DAC_RLOG, 0x3F);
+	chip->image[DAC_RLOG] = 0x3F;
+	write_reg(chip, DAC_LLIG, 0x11);
+	chip->image[DAC_LLIG] = 0x11;
+	write_reg(chip, DAC_RLIG, 0x11);
+	chip->image[DAC_RLIG] = 0x11;
+	write_reg(chip, DAC_AUXG, 0x11);
+	chip->image[DAC_AUXG] = 0x11;
+
+	/* Turn on SSC transmitter */
+	__raw_writel(SSC_CR_TXEN, chip->regs + SSC_CR);
+
+out:
+	return retval;
+}
+
+static int snd_at73c213_dev_free(snd_device_t *device)
+{
+	struct snd_at73c213 *chip = device->device_data;
+
+	if (chip->regs) {
+		__raw_writel(SSC_CR_TXDIS, chip->regs + SSC_CR);
+		iounmap(chip->regs);
+	}
+
+	if (chip->irq >= 0)
+		free_irq(chip->irq, chip);
+
+	if (chip->ssc_clk) {
+		clk_disable(chip->ssc_clk);
+		clk_put(chip->ssc_clk);
+	}
+
+	return 0;
+}
+
+static int __devinit snd_at73c213_create(snd_card_t *card,
+					 struct platform_device *pdev)
+{
+	static snd_device_ops_t ops = {
+		.dev_free	= snd_at73c213_dev_free,
+	};
+	struct snd_at73c213 *chip = get_chip(card);
+	struct resource *regs;
+	struct clk *ssc_clk;
+	int irq, retval;
+
+	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!regs)
+		return -ENXIO;
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ssc_clk = clk_get(&pdev->dev, "mck");
+	if (IS_ERR(ssc_clk))
+		return PTR_ERR(ssc_clk);
+	clk_enable(ssc_clk);
+	chip->ssc_clk = ssc_clk;
+
+	spin_lock_init(&chip->lock);
+	chip->card = card;
+	chip->pdev = pdev;
+	chip->irq = -1;
+
+	retval = -ENOMEM;
+
+	retval = spi_setup(chip->spi);
+	if (retval)
+		goto out;
+
+	chip->regs = ioremap(regs->start, regs->end - regs->start + 1);
+	if (!chip->regs)
+		goto out;
+
+	retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip);
+	if (retval) {
+		snd_printk("unable to request IRQ%d\n", irq);
+		goto out;
+	}
+	chip->irq = irq;
+
+	memcpy(&chip->image, &snd_at73c213_original_image,
+			sizeof(snd_at73c213_original_image));
+
+	retval = snd_at73c213_chip_init(chip);
+	if (retval)
+		goto out;
+
+	retval = snd_at73c213_new_pcm(chip, 0);
+	if (retval)
+		goto out;
+
+	retval = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+	if (retval)
+		goto out;
+
+	retval = snd_at73c213_mixer(chip);
+	if (retval)
+		goto out;
+
+	snd_card_set_dev(card, &pdev->dev);
+
+out:
+	return retval;
+}
+
+static int __devinit snd_at73c213_probe(struct platform_device *pdev)
+{
+	static int dev;
+	struct spi_board_info *binfo;
+	struct spi_master *smaster;
+	struct snd_at73c213 *chip;
+	snd_card_t *card;
+	int retval;
+
+	if (dev >= SNDRV_CARDS)
+		return -ENODEV;
+	if (!enable[dev]) {
+		dev++;
+		return -ENOENT;
+	}
+
+	if (spi < 0 || ssc < 0)
+		return -ENODEV;
+
+	retval = -ENOMEM;
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
+			    sizeof(struct snd_at73c213));
+	if (!card)
+		goto out;
+
+	chip = card->private_data;
+
+	retval = -ENODEV;
+
+	/* Get the SPI bus */
+	binfo = pdev->dev.platform_data;
+	if (!binfo) {
+		printk(KERN_WARNING "at73c213: could not get platform data\n");
+		goto out;
+	}
+
+	smaster = spi_busnum_to_master(spi);
+	if (!smaster) {
+		request_module("spi1");
+		smaster = spi_busnum_to_master(spi);
+		if (!smaster) {
+			printk(KERN_WARNING
+					"at73c213: could not get "
+					"SPI bus %d, remembered to load "
+					"the spi_atmel module?\n", spi);
+			goto out;
+		}
+	}
+
+	chip->spi = spi_new_device(smaster, binfo);
+	if (!chip->spi) {
+		printk(KERN_WARNING "at73c213: could not get SPI device %d\n", spi);
+		goto out;
+	}
+
+	chip->spi->mode = SPI_MODE_1;
+	chip->spi->bits_per_word = 8;
+
+	retval = snd_at73c213_create(card, pdev);
+	if (retval)
+		goto out_free_card;
+
+	strcpy(card->driver, "at73c213");
+	strcpy(card->shortname, "at73c213 (AVR32 STK1000)");
+	sprintf(card->longname, "%s at %p (irq %i)", card->shortname, chip->regs, chip->irq);
+
+	retval = snd_card_register(card);
+	if (retval)
+		goto out_free_card;
+
+	platform_set_drvdata(pdev, card);
+	dev++;
+	return 0;
+
+out_free_card:
+	snd_card_free(card);
+out:
+	return retval;
+}
+
+static int __devexit snd_at73c213_remove(struct platform_device *pdev)
+{
+	struct snd_card *card = platform_get_drvdata(pdev);
+	struct snd_at73c213 *chip = card->private_data;
+	int retval;
+
+	/* Stop playback */
+	__raw_writel(SSC_CR_TXDIS, chip->regs + SSC_CR);
+
+	/* Stop GLCK0 */
+	__raw_writel(0, (void __iomem *)PM_BASE + PM_GCCTRL);
+
+	/* Mute sound */
+	write_reg(chip, DAC_LMPG, 0x3F);
+	chip->image[DAC_LMPG] = 0x3F;
+	write_reg(chip, DAC_RMPG, 0x3F);
+	chip->image[DAC_RMPG] = 0x3F;
+	write_reg(chip, DAC_LLOG, 0x3F);
+	chip->image[DAC_LLOG] = 0x3F;
+	write_reg(chip, DAC_RLOG, 0x3F);
+	chip->image[DAC_RLOG] = 0x3F;
+	write_reg(chip, DAC_LLIG, 0x11);
+	chip->image[DAC_LLIG] = 0x11;
+	write_reg(chip, DAC_RLIG, 0x11);
+	chip->image[DAC_RLIG] = 0x11;
+	write_reg(chip, DAC_AUXG, 0x11);
+	chip->image[DAC_AUXG] = 0x11;
+
+	/* Turn off PA */
+	write_reg(chip, PA_CTRL, (chip->image[PA_CTRL]|0x0F));
+	chip->image[PA_CTRL] |= 0x0F;
+	msleep(10);
+	write_reg(chip, PA_CTRL, (1<<PA_CTRL_APALP)|0x0F);
+	chip->image[PA_CTRL] = (1<<PA_CTRL_APALP)|0x0F;
+
+	/* Turn off external DAC */
+	write_reg(chip, DAC_CTRL, 0x0C);
+	chip->image[DAC_CTRL] = 0x0C;
+	msleep(2);
+	write_reg(chip, DAC_CTRL, 0x00);
+	chip->image[DAC_CTRL] = 0x00;
+
+	/* Turn off master power */
+	write_reg(chip, DAC_PRECH, 0x00);
+	chip->image[DAC_PRECH] = 0x00;
+
+	msleep(10);
+
+out:
+	if (chip->spi)
+		spi_unregister_device(chip->spi);
+
+	if (card) {
+		snd_card_free(card);
+		platform_set_drvdata(pdev, NULL);
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_at73c213_suspend(struct platform_device *pdev, pm_message_t state, u32 level)
+{
+	struct snd_card *card = at32_get_drvdata(pdev);
+	struct snd_at73c213 *chip = card->private_data;
+
+	printk(KERN_DEBUG "at73c213: suspending\n");
+
+	/* Stop SSC and GCLK0 */
+
+	spi_suspend(chip->spi, state);
+
+	return 0;
+}
+
+static int snd_at73c213_resume(struct platform_device *pdev, u32 level)
+{
+	struct snd_card *card = at32_get_drvdata(pdev);
+	struct snd_at73c213 *chip = card->private_data;
+
+	printk(KERN_DEBUG "at73c213: resuming\n");
+
+	/* Start GLCK0 and SSC */
+
+	spi_resume(chip->spi);
+
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+/* Driver core initialization */
+static struct platform_driver at73c213_driver = {
+	.probe		= snd_at73c213_probe,
+	.remove		= __devexit_p(snd_at73c213_remove),
+	.driver		= {
+		.name	= "at73c213",
+	}
+#ifdef CONFIG_PM
+	.resume		= snd_at73c213_resume,
+	.suspend	= snd_at73c213_suspend,
+#endif
+};
+
+static int __init at73c213_init(void)
+{
+	return platform_driver_register(&at73c213_driver);
+}
+
+static void __exit at73c213_exit(void)
+{
+	platform_driver_unregister(&at73c213_driver);
+}
+
+MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
+MODULE_DESCRIPTION("Sound driver for at73c213 on STK1000");
+MODULE_LICENSE("GPL");
+
+module_init(at73c213_init);
+module_exit(at73c213_exit);
+
Index: linux-2.6.18-avr32/sound/avr32/at73c213.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.18-avr32/sound/avr32/at73c213.h	2006-11-02 15:56:20.000000000 +0100
@@ -0,0 +1,120 @@
+/*
+ * Driver for the AT73C213 16-bit stereo DAC on Atmel ATSTK1000
+ *
+ * Copyright (C) 2006 Atmel Norway
+ *
+ * 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.
+ *
+ * The full GNU General Public License is included in this
+ * distribution in the file called COPYING.
+ */
+
+#ifndef _SND_AT73C213_MIXER_H_
+#define _SND_AT73C213_MIXER_H_
+
+/* DAC control register */
+#define DAC_CTRL		0x00
+#define DAC_CTRL_ONPADRV	7
+#define DAC_CTRL_ONAUXIN	6
+#define DAC_CTRL_ONDACR		5
+#define DAC_CTRL_ONDACL		4
+#define DAC_CTRL_ONLNOR		3
+#define DAC_CTRL_ONLNOL		2
+#define DAC_CTRL_ONLNIR		1
+#define DAC_CTRL_ONLNIL		0
+
+/* DAC left line in gain register */
+#define DAC_LLIG		0x01
+#define DAC_LLIG_LLIG		0
+
+/* DAC right line in gain register */
+#define DAC_RLIG		0x02
+#define DAC_RLIG_RLIG		0
+
+/* DAC Left Master Playback Gain Register */
+#define DAC_LMPG		0x03
+#define DAC_LMPG_LMPG		0
+
+/* DAC Right Master Playback Gain Register */
+#define DAC_RMPG		0x04
+#define DAC_RMPG_RMPG		0
+
+/* DAC Left Line Out Gain Register */
+#define DAC_LLOG		0x05
+#define DAC_LLOG_LLOG		0
+
+/* DAC Right Line Out Gain Register */
+#define DAC_RLOG		0x06
+#define DAC_RLOG_RLOG		0
+
+/* DAC Output Level Control Register */
+#define DAC_OLC			0x07
+#define DAC_OLC_RSHORT		7
+#define DAC_OLC_ROLC		4
+#define DAC_OLC_LSHORT		3
+#define DAC_OLC_LOLC		0
+
+/* DAC Mixer Control Register */
+#define DAC_MC			0x08
+#define DAC_MC_INVR		5
+#define DAC_MC_INVL		4
+#define DAC_MC_RMSMIN2		3
+#define DAC_MC_RMSMIN1		2
+#define DAC_MC_LMSMIN2		1
+#define DAC_MC_LMSMIN1		0
+
+/* DAC Clock and Sampling Frequency Control Register */
+#define DAC_CSFC		0x09
+#define DAC_CSFC_OVRSEL		4
+
+/* DAC Miscellaneous Register */
+#define DAC_MISC		0x0A
+#define DAC_MISC_VCMCAPSEL	7
+#define DAC_MISC_DINTSEL	4
+#define DAC_MISC_DITHEN		3
+#define DAC_MISC_DEEMPEN	2
+#define DAC_MISC_NBITS		0
+
+/* DAC Precharge Control Register */
+#define DAC_PRECH		0x0C
+#define DAC_PRECH_PRCHGPDRV	7
+#define DAC_PRECH_PRCHGAUX1	6
+#define DAC_PRECH_PRCHGLNOR	5
+#define DAC_PRECH_PRCHGLNOL	4
+#define DAC_PRECH_PRCHGLNIR	3
+#define DAC_PRECH_PRCHGLNIL	2
+#define DAC_PRECH_PRCHG		1
+#define DAC_PRECH_ONMSTR	0
+
+/* DAC Auxiliary Input Gain Control Register */
+#define DAC_AUXG		0x0D
+#define DAC_AUXG_AUXG		0
+
+/* DAC Reset Register */
+#define DAC_RST			0x10
+#define DAC_RST_RESMASK		2
+#define DAC_RST_RESFILZ		1
+#define DAC_RST_RSTZ		0
+
+/* Power Amplifier Control Register */
+#define PA_CTRL			0x11
+#define PA_CTRL_APAON		6
+#define PA_CTRL_APAPRECH	5
+#define PA_CTRL_APALP		4
+#define PA_CTRL_APAGAIN		0
+
+#endif
+