ASoC: s6000: remove driver

The s6000 Xtensa support is removed from the kernel. There are no
other chips known to use this I2S controller.
Signed-off-by: NDaniel Glöckner <dg@emlix.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/Kconfig

@@ -49,7 +49,6 @@ source "sound/soc/mxs/Kconfig"
 source "sound/soc/pxa/Kconfig"
 source "sound/soc/rockchip/Kconfig"
 source "sound/soc/samsung/Kconfig"
-source "sound/soc/s6000/Kconfig"
 source "sound/soc/sh/Kconfig"
 source "sound/soc/sirf/Kconfig"
 source "sound/soc/spear/Kconfig"

sound/soc/Makefile

@@ -26,7 +26,6 @@ obj-$(CONFIG_SND_SOC)	+= kirkwood/
 obj-$(CONFIG_SND_SOC)	+= pxa/
 obj-$(CONFIG_SND_SOC)	+= rockchip/
 obj-$(CONFIG_SND_SOC)	+= samsung/
-obj-$(CONFIG_SND_SOC)	+= s6000/
 obj-$(CONFIG_SND_SOC)	+= sh/
 obj-$(CONFIG_SND_SOC)	+= sirf/
 obj-$(CONFIG_SND_SOC)	+= spear/

sound/soc/s6000/Kconfig

-config SND_S6000_SOC
-	tristate "SoC Audio for the Stretch s6000 family"
-	depends on XTENSA_VARIANT_S6000 || COMPILE_TEST
-	depends on HAS_IOMEM
-	select SND_S6000_SOC_PCM if XTENSA_VARIANT_S6000
-	help
-	  Say Y or M if you want to add support for codecs attached to
-	  s6000 family chips. You will also need to select the platform
-	  to support below.
-
-config SND_S6000_SOC_PCM
-	tristate
-
-config SND_S6000_SOC_I2S
-	tristate
-
-config SND_S6000_SOC_S6IPCAM
-	bool "SoC Audio support for Stretch 6105 IP Camera"
-	depends on SND_S6000_SOC=y
-	depends on I2C=y
-	depends on XTENSA_PLATFORM_S6105 || COMPILE_TEST
-	select SND_S6000_SOC_I2S
-	select SND_SOC_TLV320AIC3X
-	help
-	  Say Y if you want to add support for SoC audio on the
-	  Stretch s6105 IP Camera Reference Design.

sound/soc/s6000/Makefile

-# s6000 Platform Support
-snd-soc-s6000-objs := s6000-pcm.o
-snd-soc-s6000-i2s-objs := s6000-i2s.o
-
-obj-$(CONFIG_SND_S6000_SOC_PCM) += snd-soc-s6000.o
-obj-$(CONFIG_SND_S6000_SOC_I2S) += snd-soc-s6000-i2s.o
-
-# s6105 Machine Support
-snd-soc-s6ipcam-objs := s6105-ipcam.o
-
-obj-$(CONFIG_SND_S6000_SOC_S6IPCAM) += snd-soc-s6ipcam.o

sound/soc/s6000/s6000-i2s.c

-/*
- * ALSA SoC I2S Audio Layer for the Stretch S6000 family
- *
- * Author:      Daniel Gloeckner, <dg@emlix.com>
- * Copyright:   (C) 2009 emlix GmbH <info@emlix.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/initval.h>
-#include <sound/soc.h>
-
-#include "s6000-i2s.h"
-#include "s6000-pcm.h"
-
-struct s6000_i2s_dev {
-	dma_addr_t sifbase;
-	u8 __iomem *scbbase;
-	unsigned int wide;
-	unsigned int channel_in;
-	unsigned int channel_out;
-	unsigned int lines_in;
-	unsigned int lines_out;
-	struct s6000_pcm_dma_params dma_params;
-};
-
-#define S6_I2S_INTERRUPT_STATUS	0x00
-#define   S6_I2S_INT_OVERRUN	1
-#define   S6_I2S_INT_UNDERRUN	2
-#define   S6_I2S_INT_ALIGNMENT	4
-#define S6_I2S_INTERRUPT_ENABLE	0x04
-#define S6_I2S_INTERRUPT_RAW	0x08
-#define S6_I2S_INTERRUPT_CLEAR	0x0C
-#define S6_I2S_INTERRUPT_SET	0x10
-#define S6_I2S_MODE		0x20
-#define   S6_I2S_DUAL		0
-#define   S6_I2S_WIDE		1
-#define S6_I2S_TX_DEFAULT	0x24
-#define S6_I2S_DATA_CFG(c)	(0x40 + 0x10 * (c))
-#define   S6_I2S_IN		0
-#define   S6_I2S_OUT		1
-#define   S6_I2S_UNUSED		2
-#define S6_I2S_INTERFACE_CFG(c)	(0x44 + 0x10 * (c))
-#define   S6_I2S_DIV_MASK	0x001fff
-#define   S6_I2S_16BIT		0x000000
-#define   S6_I2S_20BIT		0x002000
-#define   S6_I2S_24BIT		0x004000
-#define   S6_I2S_32BIT		0x006000
-#define   S6_I2S_BITS_MASK	0x006000
-#define   S6_I2S_MEM_16BIT	0x000000
-#define   S6_I2S_MEM_32BIT	0x008000
-#define   S6_I2S_MEM_MASK	0x008000
-#define   S6_I2S_CHANNELS_SHIFT	16
-#define   S6_I2S_CHANNELS_MASK	0x030000
-#define   S6_I2S_SCK_IN		0x000000
-#define   S6_I2S_SCK_OUT	0x040000
-#define   S6_I2S_SCK_DIR	0x040000
-#define   S6_I2S_WS_IN		0x000000
-#define   S6_I2S_WS_OUT		0x080000
-#define   S6_I2S_WS_DIR		0x080000
-#define   S6_I2S_LEFT_FIRST	0x000000
-#define   S6_I2S_RIGHT_FIRST	0x100000
-#define   S6_I2S_FIRST		0x100000
-#define   S6_I2S_CUR_SCK	0x200000
-#define   S6_I2S_CUR_WS		0x400000
-#define S6_I2S_ENABLE(c)	(0x48 + 0x10 * (c))
-#define   S6_I2S_DISABLE_IF	0x02
-#define   S6_I2S_ENABLE_IF	0x03
-#define   S6_I2S_IS_BUSY	0x04
-#define   S6_I2S_DMA_ACTIVE	0x08
-#define   S6_I2S_IS_ENABLED	0x10
-
-#define S6_I2S_NUM_LINES	4
-
-#define S6_I2S_SIF_PORT0	0x0000000
-#define S6_I2S_SIF_PORT1	0x0000080 /* docs say 0x0000010 */
-
-static inline void s6_i2s_write_reg(struct s6000_i2s_dev *dev, int reg, u32 val)
-{
-	writel(val, dev->scbbase + reg);
-}
-
-static inline u32 s6_i2s_read_reg(struct s6000_i2s_dev *dev, int reg)
-{
-	return readl(dev->scbbase + reg);
-}
-
-static inline void s6_i2s_mod_reg(struct s6000_i2s_dev *dev, int reg,
-				  u32 mask, u32 val)
-{
-	val ^= s6_i2s_read_reg(dev, reg) & ~mask;
-	s6_i2s_write_reg(dev, reg, val);
-}
-
-static void s6000_i2s_start_channel(struct s6000_i2s_dev *dev, int channel)
-{
-	int i, j, cur, prev;
-
-	/*
-	 * Wait for WCLK to toggle 5 times before enabling the channel
-	 * s6000 Family Datasheet 3.6.4:
-	 *   "At least two cycles of WS must occur between commands
-	 *    to disable or enable the interface"
-	 */
-	j = 0;
-	prev = ~S6_I2S_CUR_WS;
-	for (i = 1000000; --i && j < 6; ) {
-		cur = s6_i2s_read_reg(dev, S6_I2S_INTERFACE_CFG(channel))
-		       & S6_I2S_CUR_WS;
-		if (prev != cur) {
-			prev = cur;
-			j++;
-		}
-	}
-	if (j < 6)
-		printk(KERN_WARNING "s6000-i2s: timeout waiting for WCLK\n");
-
-	s6_i2s_write_reg(dev, S6_I2S_ENABLE(channel), S6_I2S_ENABLE_IF);
-}
-
-static void s6000_i2s_stop_channel(struct s6000_i2s_dev *dev, int channel)
-{
-	s6_i2s_write_reg(dev, S6_I2S_ENABLE(channel), S6_I2S_DISABLE_IF);
-}
-
-static void s6000_i2s_start(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	int channel;
-
-	channel = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
-			dev->channel_out : dev->channel_in;
-
-	s6000_i2s_start_channel(dev, channel);
-}
-
-static void s6000_i2s_stop(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(rtd->cpu_dai);
-	int channel;
-
-	channel = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
-			dev->channel_out : dev->channel_in;
-
-	s6000_i2s_stop_channel(dev, channel);
-}
-
-static int s6000_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
-			     int after)
-{
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		if ((substream->stream == SNDRV_PCM_STREAM_CAPTURE) ^ !after)
-			s6000_i2s_start(substream);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		if (!after)
-			s6000_i2s_stop(substream);
-	}
-	return 0;
-}
-
-static unsigned int s6000_i2s_int_sources(struct s6000_i2s_dev *dev)
-{
-	unsigned int pending;
-	pending = s6_i2s_read_reg(dev, S6_I2S_INTERRUPT_RAW);
-	pending &= S6_I2S_INT_ALIGNMENT |
-		   S6_I2S_INT_UNDERRUN |
-		   S6_I2S_INT_OVERRUN;
-	s6_i2s_write_reg(dev, S6_I2S_INTERRUPT_CLEAR, pending);
-
-	return pending;
-}
-
-static unsigned int s6000_i2s_check_xrun(struct snd_soc_dai *cpu_dai)
-{
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai);
-	unsigned int errors;
-	unsigned int ret;
-
-	errors = s6000_i2s_int_sources(dev);
-	if (likely(!errors))
-		return 0;
-
-	ret = 0;
-	if (errors & S6_I2S_INT_ALIGNMENT)
-		printk(KERN_ERR "s6000-i2s: WCLK misaligned\n");
-	if (errors & S6_I2S_INT_UNDERRUN)
-		ret |= 1 << SNDRV_PCM_STREAM_PLAYBACK;
-	if (errors & S6_I2S_INT_OVERRUN)
-		ret |= 1 << SNDRV_PCM_STREAM_CAPTURE;
-	return ret;
-}
-
-static void s6000_i2s_wait_disabled(struct s6000_i2s_dev *dev)
-{
-	int channel;
-	int n = 50;
-	for (channel = 0; channel < 2; channel++) {
-		while (--n >= 0) {
-			int v = s6_i2s_read_reg(dev, S6_I2S_ENABLE(channel));
-			if ((v & S6_I2S_IS_ENABLED)
-			    || !(v & (S6_I2S_DMA_ACTIVE | S6_I2S_IS_BUSY)))
-				break;
-			udelay(20);
-		}
-	}
-	if (n < 0)
-		printk(KERN_WARNING "s6000-i2s: timeout disabling interfaces");
-}
-
-static int s6000_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
-				   unsigned int fmt)
-{
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai);
-	u32 w;
-
-	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
-	case SND_SOC_DAIFMT_CBM_CFM:
-		w = S6_I2S_SCK_IN | S6_I2S_WS_IN;
-		break;
-	case SND_SOC_DAIFMT_CBS_CFM:
-		w = S6_I2S_SCK_OUT | S6_I2S_WS_IN;
-		break;
-	case SND_SOC_DAIFMT_CBM_CFS:
-		w = S6_I2S_SCK_IN | S6_I2S_WS_OUT;
-		break;
-	case SND_SOC_DAIFMT_CBS_CFS:
-		w = S6_I2S_SCK_OUT | S6_I2S_WS_OUT;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
-	case SND_SOC_DAIFMT_NB_NF:
-		w |= S6_I2S_LEFT_FIRST;
-		break;
-	case SND_SOC_DAIFMT_NB_IF:
-		w |= S6_I2S_RIGHT_FIRST;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	s6_i2s_mod_reg(dev, S6_I2S_INTERFACE_CFG(0),
-		       S6_I2S_FIRST | S6_I2S_WS_DIR | S6_I2S_SCK_DIR, w);
-	s6_i2s_mod_reg(dev, S6_I2S_INTERFACE_CFG(1),
-		       S6_I2S_FIRST | S6_I2S_WS_DIR | S6_I2S_SCK_DIR, w);
-
-	return 0;
-}
-
-static int s6000_i2s_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div)
-{
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
-
-	if (!div || (div & 1) || div > (S6_I2S_DIV_MASK + 1) * 2)
-		return -EINVAL;
-
-	s6_i2s_mod_reg(dev, S6_I2S_INTERFACE_CFG(div_id),
-		       S6_I2S_DIV_MASK, div / 2 - 1);
-	return 0;
-}
-
-static int s6000_i2s_hw_params(struct snd_pcm_substream *substream,
-			       struct snd_pcm_hw_params *params,
-			       struct snd_soc_dai *dai)
-{
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
-	int interf;
-	u32 w = 0;
-
-	if (dev->wide)
-		interf = 0;
-	else {
-		w |= (((params_channels(params) - 2) / 2)
-		      << S6_I2S_CHANNELS_SHIFT) & S6_I2S_CHANNELS_MASK;
-		interf = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-				? dev->channel_out : dev->channel_in;
-	}
-
-	switch (params_format(params)) {
-	case SNDRV_PCM_FORMAT_S16_LE:
-		w |= S6_I2S_16BIT | S6_I2S_MEM_16BIT;
-		break;
-	case SNDRV_PCM_FORMAT_S32_LE:
-		w |= S6_I2S_32BIT | S6_I2S_MEM_32BIT;
-		break;
-	default:
-		printk(KERN_WARNING "s6000-i2s: unsupported PCM format %x\n",
-		       params_format(params));
-		return -EINVAL;
-	}
-
-	if (s6_i2s_read_reg(dev, S6_I2S_INTERFACE_CFG(interf))
-	     & S6_I2S_IS_ENABLED) {
-		printk(KERN_ERR "s6000-i2s: interface already enabled\n");
-		return -EBUSY;
-	}
-
-	s6_i2s_mod_reg(dev, S6_I2S_INTERFACE_CFG(interf),
-		       S6_I2S_CHANNELS_MASK|S6_I2S_MEM_MASK|S6_I2S_BITS_MASK,
-		       w);
-
-	return 0;
-}
-
-static int s6000_i2s_dai_probe(struct snd_soc_dai *dai)
-{
-	struct s6000_i2s_dev *dev = snd_soc_dai_get_drvdata(dai);
-	struct s6000_snd_platform_data *pdata = dai->dev->platform_data;
-
-	if (!pdata)
-		return -EINVAL;
-
-	dai->capture_dma_data = &dev->dma_params;
-	dai->playback_dma_data = &dev->dma_params;
-
-	dev->wide = pdata->wide;
-	dev->channel_in = pdata->channel_in;
-	dev->channel_out = pdata->channel_out;
-	dev->lines_in = pdata->lines_in;
-	dev->lines_out = pdata->lines_out;
-
-	s6_i2s_write_reg(dev, S6_I2S_MODE,
-			 dev->wide ? S6_I2S_WIDE : S6_I2S_DUAL);
-
-	if (dev->wide) {
-		int i;
-
-		if (dev->lines_in + dev->lines_out > S6_I2S_NUM_LINES)
-			return -EINVAL;
-
-		dev->channel_in = 0;
-		dev->channel_out = 1;
-		dai->driver->capture.channels_min = 2 * dev->lines_in;
-		dai->driver->capture.channels_max = dai->driver->capture.channels_min;
-		dai->driver->playback.channels_min = 2 * dev->lines_out;
-		dai->driver->playback.channels_max = dai->driver->playback.channels_min;
-
-		for (i = 0; i < dev->lines_out; i++)
-			s6_i2s_write_reg(dev, S6_I2S_DATA_CFG(i), S6_I2S_OUT);
-
-		for (; i < S6_I2S_NUM_LINES - dev->lines_in; i++)
-			s6_i2s_write_reg(dev, S6_I2S_DATA_CFG(i),
-					 S6_I2S_UNUSED);
-
-		for (; i < S6_I2S_NUM_LINES; i++)
-			s6_i2s_write_reg(dev, S6_I2S_DATA_CFG(i), S6_I2S_IN);
-	} else {
-		unsigned int cfg[2] = {S6_I2S_UNUSED, S6_I2S_UNUSED};
-
-		if (dev->lines_in > 1 || dev->lines_out > 1)
-			return -EINVAL;
-
-		dai->driver->capture.channels_min = 2 * dev->lines_in;
-		dai->driver->capture.channels_max = 8 * dev->lines_in;
-		dai->driver->playback.channels_min = 2 * dev->lines_out;
-		dai->driver->playback.channels_max = 8 * dev->lines_out;
-
-		if (dev->lines_in)
-			cfg[dev->channel_in] = S6_I2S_IN;
-		if (dev->lines_out)
-			cfg[dev->channel_out] = S6_I2S_OUT;
-
-		s6_i2s_write_reg(dev, S6_I2S_DATA_CFG(0), cfg[0]);
-		s6_i2s_write_reg(dev, S6_I2S_DATA_CFG(1), cfg[1]);
-	}
-
-	if (dev->lines_out) {
-		if (dev->lines_in) {
-			if (!dev->dma_params.dma_out)
-				return -ENODEV;
-		} else {
-			dev->dma_params.dma_out = dev->dma_params.dma_in;
-			dev->dma_params.dma_in = 0;
-		}
-	}
-	dev->dma_params.sif_in = dev->sifbase + (dev->channel_in ?
-					S6_I2S_SIF_PORT1 : S6_I2S_SIF_PORT0);
-	dev->dma_params.sif_out = dev->sifbase + (dev->channel_out ?
-					S6_I2S_SIF_PORT1 : S6_I2S_SIF_PORT0);
-	dev->dma_params.same_rate = pdata->same_rate | pdata->wide;
-	return 0;
-}
-
-#define S6000_I2S_RATES SNDRV_PCM_RATE_CONTINUOUS
-#define S6000_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
-
-static const struct snd_soc_dai_ops s6000_i2s_dai_ops = {
-	.set_fmt = s6000_i2s_set_dai_fmt,
-	.set_clkdiv = s6000_i2s_set_clkdiv,
-	.hw_params = s6000_i2s_hw_params,
-};
-
-static struct snd_soc_dai_driver s6000_i2s_dai = {
-	.probe = s6000_i2s_dai_probe,
-	.playback = {
-		.channels_min = 2,
-		.channels_max = 8,
-		.formats = S6000_I2S_FORMATS,
-		.rates = S6000_I2S_RATES,
-		.rate_min = 0,
-		.rate_max = 1562500,
-	},
-	.capture = {
-		.channels_min = 2,
-		.channels_max = 8,
-		.formats = S6000_I2S_FORMATS,
-		.rates = S6000_I2S_RATES,
-		.rate_min = 0,
-		.rate_max = 1562500,
-	},
-	.ops = &s6000_i2s_dai_ops,
-};
-
-static const struct snd_soc_component_driver s6000_i2s_component = {
-	.name		= "s6000-i2s",
-};
-
-static int s6000_i2s_probe(struct platform_device *pdev)
-{
-	struct s6000_i2s_dev *dev;
-	struct resource *scbmem, *sifmem, *region, *dma1, *dma2;
-	u8 __iomem *mmio;
-	int ret;
-
-	scbmem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!scbmem) {
-		dev_err(&pdev->dev, "no mem resource?\n");
-		ret = -ENODEV;
-		goto err_release_none;
-	}
-
-	region = request_mem_region(scbmem->start, resource_size(scbmem),
-								pdev->name);
-	if (!region) {
-		dev_err(&pdev->dev, "I2S SCB region already claimed\n");
-		ret = -EBUSY;
-		goto err_release_none;
-	}
-
-	mmio = ioremap(scbmem->start, resource_size(scbmem));
-	if (!mmio) {
-		dev_err(&pdev->dev, "can't ioremap SCB region\n");
-		ret = -ENOMEM;
-		goto err_release_scb;
-	}
-
-	sifmem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (!sifmem) {
-		dev_err(&pdev->dev, "no second mem resource?\n");
-		ret = -ENODEV;
-		goto err_release_map;
-	}
-
-	region = request_mem_region(sifmem->start, resource_size(sifmem),
-								pdev->name);
-	if (!region) {
-		dev_err(&pdev->dev, "I2S SIF region already claimed\n");
-		ret = -EBUSY;
-		goto err_release_map;
-	}
-
-	dma1 = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!dma1) {
-		dev_err(&pdev->dev, "no dma resource?\n");
-		ret = -ENODEV;
-		goto err_release_sif;
-	}
-
-	region = request_mem_region(dma1->start, resource_size(dma1),
-								pdev->name);
-	if (!region) {
-		dev_err(&pdev->dev, "I2S DMA region already claimed\n");
-		ret = -EBUSY;
-		goto err_release_sif;
-	}
-
-	dma2 = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-	if (dma2) {
-		region = request_mem_region(dma2->start, resource_size(dma2),
-								pdev->name);
-		if (!region) {
-			dev_err(&pdev->dev,
-				"I2S DMA region already claimed\n");
-			ret = -EBUSY;
-			goto err_release_dma1;
-		}
-	}
-
-	dev = kzalloc(sizeof(struct s6000_i2s_dev), GFP_KERNEL);
-	if (!dev) {
-		ret = -ENOMEM;
-		goto err_release_dma2;
-	}
-	dev_set_drvdata(&pdev->dev, dev);
-
-	dev->sifbase = sifmem->start;
-	dev->scbbase = mmio;
-
-	s6_i2s_write_reg(dev, S6_I2S_INTERRUPT_ENABLE, 0);
-	s6_i2s_write_reg(dev, S6_I2S_INTERRUPT_CLEAR,
-			 S6_I2S_INT_ALIGNMENT |
-			 S6_I2S_INT_UNDERRUN |
-			 S6_I2S_INT_OVERRUN);
-
-	s6000_i2s_stop_channel(dev, 0);
-	s6000_i2s_stop_channel(dev, 1);
-	s6000_i2s_wait_disabled(dev);
-
-	dev->dma_params.check_xrun = s6000_i2s_check_xrun;
-	dev->dma_params.trigger = s6000_i2s_trigger;
-	dev->dma_params.dma_in = dma1->start;
-	dev->dma_params.dma_out = dma2 ? dma2->start : 0;
-	dev->dma_params.irq = platform_get_irq(pdev, 0);
-	if (dev->dma_params.irq < 0) {
-		dev_err(&pdev->dev, "no irq resource?\n");
-		ret = -ENODEV;
-		goto err_release_dev;
-	}
-
-	s6_i2s_write_reg(dev, S6_I2S_INTERRUPT_ENABLE,
-			 S6_I2S_INT_ALIGNMENT |
-			 S6_I2S_INT_UNDERRUN |
-			 S6_I2S_INT_OVERRUN);
-
-	ret = snd_soc_register_component(&pdev->dev, &s6000_i2s_component,
-					 &s6000_i2s_dai, 1);
-	if (ret)
-		goto err_release_dev;
-
-	return 0;
-
-err_release_dev:
-	kfree(dev);
-err_release_dma2:
-	if (dma2)
-		release_mem_region(dma2->start, resource_size(dma2));
-err_release_dma1:
-	release_mem_region(dma1->start, resource_size(dma1));
-err_release_sif:
-	release_mem_region(sifmem->start, resource_size(sifmem));
-err_release_map:
-	iounmap(mmio);
-err_release_scb:
-	release_mem_region(scbmem->start, resource_size(scbmem));
-err_release_none:
-	return ret;
-}
-
-static int s6000_i2s_remove(struct platform_device *pdev)
-{
-	struct s6000_i2s_dev *dev = dev_get_drvdata(&pdev->dev);
-	struct resource *region;
-	void __iomem *mmio = dev->scbbase;
-
-	snd_soc_unregister_component(&pdev->dev);
-
-	s6000_i2s_stop_channel(dev, 0);
-	s6000_i2s_stop_channel(dev, 1);
-
-	s6_i2s_write_reg(dev, S6_I2S_INTERRUPT_ENABLE, 0);
-	kfree(dev);
-
-	region = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	release_mem_region(region->start, resource_size(region));
-
-	region = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-	if (region)
-		release_mem_region(region->start, resource_size(region));
-
-	region = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(region->start, resource_size(region));
-
-	iounmap(mmio);
-	region = platform_get_resource(pdev, IORESOURCE_IO, 0);
-	release_mem_region(region->start, resource_size(region));
-
-	return 0;
-}
-
-static struct platform_driver s6000_i2s_driver = {
-	.probe  = s6000_i2s_probe,
-	.remove = s6000_i2s_remove,
-	.driver = {
-		.name   = "s6000-i2s",
-		.owner  = THIS_MODULE,
-	},
-};
-
-module_platform_driver(s6000_i2s_driver);
-
-MODULE_AUTHOR("Daniel Gloeckner");
-MODULE_DESCRIPTION("Stretch s6000 family I2S SoC Interface");
-MODULE_LICENSE("GPL");

sound/soc/s6000/s6000-i2s.h

-/*
- * ALSA SoC I2S Audio Layer for the Stretch s6000 family
- *
- * Author:      Daniel Gloeckner, <dg@emlix.com>
- * Copyright:   (C) 2009 emlix GmbH <info@emlix.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _S6000_I2S_H
-#define _S6000_I2S_H
-
-struct s6000_snd_platform_data {
-	int lines_in;
-	int lines_out;
-	int channel_in;
-	int channel_out;
-	int wide;
-	int same_rate;
-};
-#endif

sound/soc/s6000/s6000-pcm.c

-/*
- * ALSA PCM interface for the Stetch s6000 family
- *
- * Author:      Daniel Gloeckner, <dg@emlix.com>
- * Copyright:   (C) 2009 emlix GmbH <info@emlix.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#include <asm/dma.h>
-#include <variant/dmac.h>
-
-#include "s6000-pcm.h"
-
-#define S6_PCM_PREALLOCATE_SIZE (96 * 1024)
-#define S6_PCM_PREALLOCATE_MAX  (2048 * 1024)
-
-static struct snd_pcm_hardware s6000_pcm_hardware = {
-	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
-		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
-		 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_JOINT_DUPLEX),
-	.buffer_bytes_max = 0x7ffffff0,
-	.period_bytes_min = 16,
-	.period_bytes_max = 0xfffff0,
-	.periods_min = 2,
-	.periods_max = 1024, /* no limit */
-	.fifo_size = 0,
-};
-
-struct s6000_runtime_data {
-	spinlock_t lock;
-	int period;		/* current DMA period */
-};
-
-static void s6000_pcm_enqueue_dma(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct s6000_runtime_data *prtd = runtime->private_data;
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	int channel;
-	unsigned int period_size;
-	unsigned int dma_offset;
-	dma_addr_t dma_pos;
-	dma_addr_t src, dst;
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	period_size = snd_pcm_lib_period_bytes(substream);
-	dma_offset = prtd->period * period_size;
-	dma_pos = runtime->dma_addr + dma_offset;
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		src = dma_pos;
-		dst = par->sif_out;
-		channel = par->dma_out;
-	} else {
-		src = par->sif_in;
-		dst = dma_pos;
-		channel = par->dma_in;
-	}
-
-	if (!s6dmac_channel_enabled(DMA_MASK_DMAC(channel),
-				    DMA_INDEX_CHNL(channel)))
-		return;
-
-	if (s6dmac_fifo_full(DMA_MASK_DMAC(channel), DMA_INDEX_CHNL(channel))) {
-		printk(KERN_ERR "s6000-pcm: fifo full\n");
-		return;
-	}
-
-	if (WARN_ON(period_size & 15))
-		return;
-	s6dmac_put_fifo(DMA_MASK_DMAC(channel), DMA_INDEX_CHNL(channel),
-			src, dst, period_size);
-
-	prtd->period++;
-	if (unlikely(prtd->period >= runtime->periods))
-		prtd->period = 0;
-}
-
-static irqreturn_t s6000_pcm_irq(int irq, void *data)
-{
-	struct snd_pcm *pcm = data;
-	struct snd_soc_pcm_runtime *runtime = pcm->private_data;
-	struct s6000_runtime_data *prtd;
-	unsigned int has_xrun;
-	int i, ret = IRQ_NONE;
-
-	for (i = 0; i < 2; ++i) {
-		struct snd_pcm_substream *substream = pcm->streams[i].substream;
-		struct s6000_pcm_dma_params *params =
-					snd_soc_dai_get_dma_data(runtime->cpu_dai, substream);
-		u32 channel;
-		unsigned int pending;
-
-		if (substream == SNDRV_PCM_STREAM_PLAYBACK)
-			channel = params->dma_out;
-		else
-			channel = params->dma_in;
-
-		has_xrun = params->check_xrun(runtime->cpu_dai);
-
-		if (!channel)
-			continue;
-
-		if (unlikely(has_xrun & (1 << i)) &&
-		    substream->runtime &&
-		    snd_pcm_running(substream)) {
-			dev_dbg(pcm->dev, "xrun\n");
-			snd_pcm_stream_lock(substream);
-			snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-			snd_pcm_stream_unlock(substream);
-			ret = IRQ_HANDLED;
-		}
-
-		pending = s6dmac_int_sources(DMA_MASK_DMAC(channel),
-					     DMA_INDEX_CHNL(channel));
-
-		if (pending & 1) {
-			ret = IRQ_HANDLED;
-			if (likely(substream->runtime &&
-				   snd_pcm_running(substream))) {
-				snd_pcm_period_elapsed(substream);
-				dev_dbg(pcm->dev, "period elapsed %x %x\n",
-				       s6dmac_cur_src(DMA_MASK_DMAC(channel),
-						   DMA_INDEX_CHNL(channel)),
-				       s6dmac_cur_dst(DMA_MASK_DMAC(channel),
-						   DMA_INDEX_CHNL(channel)));
-				prtd = substream->runtime->private_data;
-				spin_lock(&prtd->lock);
-				s6000_pcm_enqueue_dma(substream);
-				spin_unlock(&prtd->lock);
-			}
-		}
-
-		if (unlikely(pending & ~7)) {
-			if (pending & (1 << 3))
-				printk(KERN_WARNING
-				       "s6000-pcm: DMA %x Underflow\n",
-				       channel);
-			if (pending & (1 << 4))
-				printk(KERN_WARNING
-				       "s6000-pcm: DMA %x Overflow\n",
-				       channel);
-			if (pending & 0x1e0)
-				printk(KERN_WARNING
-				       "s6000-pcm: DMA %x Master Error "
-				       "(mask %x)\n",
-				       channel, pending >> 5);
-
-		}
-	}
-
-	return ret;
-}
-
-static int s6000_pcm_start(struct snd_pcm_substream *substream)
-{
-	struct s6000_runtime_data *prtd = substream->runtime->private_data;
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	unsigned long flags;
-	int srcinc;
-	u32 dma;
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	spin_lock_irqsave(&prtd->lock, flags);
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		srcinc = 1;
-		dma = par->dma_out;
-	} else {
-		srcinc = 0;
-		dma = par->dma_in;
-	}
-	s6dmac_enable_chan(DMA_MASK_DMAC(dma), DMA_INDEX_CHNL(dma),
-			   1 /* priority 1 (0 is max) */,
-			   0 /* peripheral requests w/o xfer length mode */,
-			   srcinc /* source address increment */,
-			   srcinc^1 /* destination address increment */,
-			   0 /* chunksize 0 (skip impossible on this dma) */,
-			   0 /* source skip after chunk (impossible) */,
-			   0 /* destination skip after chunk (impossible) */,
-			   4 /* 16 byte burst size */,
-			   -1 /* don't conserve bandwidth */,
-			   0 /* low watermark irq descriptor threshold */,
-			   0 /* disable hardware timestamps */,
-			   1 /* enable channel */);
-
-	s6000_pcm_enqueue_dma(substream);
-	s6000_pcm_enqueue_dma(substream);
-
-	spin_unlock_irqrestore(&prtd->lock, flags);
-
-	return 0;
-}
-
-static int s6000_pcm_stop(struct snd_pcm_substream *substream)
-{
-	struct s6000_runtime_data *prtd = substream->runtime->private_data;
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	unsigned long flags;
-	u32 channel;
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		channel = par->dma_out;
-	else
-		channel = par->dma_in;
-
-	s6dmac_set_terminal_count(DMA_MASK_DMAC(channel),
-				  DMA_INDEX_CHNL(channel), 0);
-
-	spin_lock_irqsave(&prtd->lock, flags);
-
-	s6dmac_disable_chan(DMA_MASK_DMAC(channel), DMA_INDEX_CHNL(channel));
-
-	spin_unlock_irqrestore(&prtd->lock, flags);
-
-	return 0;
-}
-
-static int s6000_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	int ret;
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	ret = par->trigger(substream, cmd, 0);
-	if (ret < 0)
-		return ret;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		ret = s6000_pcm_start(substream);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		ret = s6000_pcm_stop(substream);
-		break;
-	default:
-		ret = -EINVAL;
-	}
-	if (ret < 0)
-		return ret;
-
-	return par->trigger(substream, cmd, 1);
-}
-
-static int s6000_pcm_prepare(struct snd_pcm_substream *substream)
-{
-	struct s6000_runtime_data *prtd = substream->runtime->private_data;
-
-	prtd->period = 0;
-
-	return 0;
-}
-
-static snd_pcm_uframes_t s6000_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct s6000_runtime_data *prtd = runtime->private_data;
-	unsigned long flags;
-	unsigned int offset;
-	dma_addr_t count;
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	spin_lock_irqsave(&prtd->lock, flags);
-
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		count = s6dmac_cur_src(DMA_MASK_DMAC(par->dma_out),
-				       DMA_INDEX_CHNL(par->dma_out));
-	else
-		count = s6dmac_cur_dst(DMA_MASK_DMAC(par->dma_in),
-				       DMA_INDEX_CHNL(par->dma_in));
-
-	count -= runtime->dma_addr;
-
-	spin_unlock_irqrestore(&prtd->lock, flags);
-
-	offset = bytes_to_frames(runtime, count);
-	if (unlikely(offset >= runtime->buffer_size))
-		offset = 0;
-
-	return offset;
-}
-
-static int s6000_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct s6000_runtime_data *prtd;
-	int ret;
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-	snd_soc_set_runtime_hwparams(substream, &s6000_pcm_hardware);
-
-	ret = snd_pcm_hw_constraint_step(runtime, 0,
-					 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 16);
-	if (ret < 0)
-		return ret;
-	ret = snd_pcm_hw_constraint_step(runtime, 0,
-					 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 16);
-	if (ret < 0)
-		return ret;
-	ret = snd_pcm_hw_constraint_integer(runtime,
-					    SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0)
-		return ret;
-
-	if (par->same_rate) {
-		int rate;
-		spin_lock(&par->lock); /* needed? */
-		rate = par->rate;
-		spin_unlock(&par->lock);
-		if (rate != -1) {
-			ret = snd_pcm_hw_constraint_minmax(runtime,
-							SNDRV_PCM_HW_PARAM_RATE,
-							rate, rate);
-			if (ret < 0)
-				return ret;
-		}
-	}
-
-	prtd = kzalloc(sizeof(struct s6000_runtime_data), GFP_KERNEL);
-	if (prtd == NULL)
-		return -ENOMEM;
-
-	spin_lock_init(&prtd->lock);
-
-	runtime->private_data = prtd;
-
-	return 0;
-}
-
-static int s6000_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct s6000_runtime_data *prtd = runtime->private_data;
-
-	kfree(prtd);
-
-	return 0;
-}
-
-static int s6000_pcm_hw_params(struct snd_pcm_substream *substream,
-				 struct snd_pcm_hw_params *hw_params)
-{
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par;
-	int ret;
-	ret = snd_pcm_lib_malloc_pages(substream,
-				       params_buffer_bytes(hw_params));
-	if (ret < 0) {
-		printk(KERN_WARNING "s6000-pcm: allocation of memory failed\n");
-		return ret;
-	}
-
-	par = snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	if (par->same_rate) {
-		spin_lock(&par->lock);
-		if (par->rate == -1 ||
-		    !(par->in_use & ~(1 << substream->stream))) {
-			par->rate = params_rate(hw_params);
-			par->in_use |= 1 << substream->stream;
-		} else if (params_rate(hw_params) != par->rate) {
-			snd_pcm_lib_free_pages(substream);
-			par->in_use &= ~(1 << substream->stream);
-			ret = -EBUSY;
-		}
-		spin_unlock(&par->lock);
-	}
-	return ret;
-}
-
-static int s6000_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
-	struct s6000_pcm_dma_params *par =
-		snd_soc_dai_get_dma_data(soc_runtime->cpu_dai, substream);
-
-	spin_lock(&par->lock);
-	par->in_use &= ~(1 << substream->stream);
-	if (!par->in_use)
-		par->rate = -1;
-	spin_unlock(&par->lock);
-
-	return snd_pcm_lib_free_pages(substream);
-}
-
-static struct snd_pcm_ops s6000_pcm_ops = {
-	.open = 	s6000_pcm_open,
-	.close = 	s6000_pcm_close,
-	.ioctl = 	snd_pcm_lib_ioctl,
-	.hw_params = 	s6000_pcm_hw_params,
-	.hw_free = 	s6000_pcm_hw_free,
-	.trigger =	s6000_pcm_trigger,
-	.prepare = 	s6000_pcm_prepare,
-	.pointer = 	s6000_pcm_pointer,
-};
-
-static void s6000_pcm_free(struct snd_pcm *pcm)
-{
-	struct snd_soc_pcm_runtime *runtime = pcm->private_data;
-	struct s6000_pcm_dma_params *params =
-		snd_soc_dai_get_dma_data(runtime->cpu_dai,
-			pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream);
-
-	free_irq(params->irq, pcm);
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
-static int s6000_pcm_new(struct snd_soc_pcm_runtime *runtime)
-{
-	struct snd_card *card = runtime->card->snd_card;
-	struct snd_pcm *pcm = runtime->pcm;
-	struct s6000_pcm_dma_params *params;
-	int res;
-
-	params = snd_soc_dai_get_dma_data(runtime->cpu_dai,
-			pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream);
-
-	res = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
-	if (res)
-		return res;
-
-	if (params->dma_in) {
-		s6dmac_disable_chan(DMA_MASK_DMAC(params->dma_in),
-				    DMA_INDEX_CHNL(params->dma_in));
-		s6dmac_int_sources(DMA_MASK_DMAC(params->dma_in),
-				   DMA_INDEX_CHNL(params->dma_in));
-	}
-
-	if (params->dma_out) {
-		s6dmac_disable_chan(DMA_MASK_DMAC(params->dma_out),
-				    DMA_INDEX_CHNL(params->dma_out));
-		s6dmac_int_sources(DMA_MASK_DMAC(params->dma_out),
-				   DMA_INDEX_CHNL(params->dma_out));
-	}
-
-	res = request_irq(params->irq, s6000_pcm_irq, IRQF_SHARED,
-			  "s6000-audio", pcm);
-	if (res) {
-		printk(KERN_ERR "s6000-pcm couldn't get IRQ\n");
-		return res;
-	}
-
-	res = snd_pcm_lib_preallocate_pages_for_all(pcm,
-						    SNDRV_DMA_TYPE_DEV,
-						    card->dev,
-						    S6_PCM_PREALLOCATE_SIZE,
-						    S6_PCM_PREALLOCATE_MAX);
-	if (res)
-		printk(KERN_WARNING "s6000-pcm: preallocation failed\n");
-
-	spin_lock_init(&params->lock);
-	params->in_use = 0;
-	params->rate = -1;
-	return 0;
-}
-
-static struct snd_soc_platform_driver s6000_soc_platform = {
-	.ops =		&s6000_pcm_ops,
-	.pcm_new = 	s6000_pcm_new,
-	.pcm_free = 	s6000_pcm_free,
-};
-
-static int s6000_soc_platform_probe(struct platform_device *pdev)
-{
-	return snd_soc_register_platform(&pdev->dev, &s6000_soc_platform);
-}
-
-static int s6000_soc_platform_remove(struct platform_device *pdev)
-{
-	snd_soc_unregister_platform(&pdev->dev);
-	return 0;
-}
-
-static struct platform_driver s6000_pcm_driver = {
-	.driver = {
-			.name = "s6000-pcm-audio",
-			.owner = THIS_MODULE,
-	},
-
-	.probe = s6000_soc_platform_probe,
-	.remove = s6000_soc_platform_remove,
-};
-
-module_platform_driver(s6000_pcm_driver);
-
-MODULE_AUTHOR("Daniel Gloeckner");
-MODULE_DESCRIPTION("Stretch s6000 family PCM DMA module");
-MODULE_LICENSE("GPL");

sound/soc/s6000/s6000-pcm.h

-/*
- * ALSA PCM interface for the Stretch s6000 family
- *
- * Author:      Daniel Gloeckner, <dg@emlix.com>
- * Copyright:   (C) 2009 emlix GmbH <info@emlix.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _S6000_PCM_H
-#define _S6000_PCM_H
-
-struct snd_soc_dai;
-struct snd_pcm_substream;
-
-struct s6000_pcm_dma_params {
-	unsigned int (*check_xrun)(struct snd_soc_dai *cpu_dai);
-	int (*trigger)(struct snd_pcm_substream *substream, int cmd, int after);
-	dma_addr_t sif_in;
-	dma_addr_t sif_out;
-	u32 dma_in;
-	u32 dma_out;
-	int irq;
-	int same_rate;
-
-	spinlock_t lock;
-	int in_use;
-	int rate;
-};
-
-#endif

sound/soc/s6000/s6105-ipcam.c

-/*
- * ASoC driver for Stretch s6105 IP camera platform
- *
- * Author:      Daniel Gloeckner, <dg@emlix.com>
- * Copyright:   (C) 2009 emlix GmbH <info@emlix.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/i2c.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-
-#include "s6000-pcm.h"
-#include "s6000-i2s.h"
-
-#define S6105_CAM_CODEC_CLOCK 12288000
-
-static int s6105_hw_params(struct snd_pcm_substream *substream,
-			   struct snd_pcm_hw_params *params)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_soc_dai *codec_dai = rtd->codec_dai;
-	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-	int ret = 0;
-
-	/* set codec DAI configuration */
-	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
-					     SND_SOC_DAIFMT_CBM_CFM);
-	if (ret < 0)
-		return ret;
-
-	/* set cpu DAI configuration */
-	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
-					   SND_SOC_DAIFMT_NB_NF);
-	if (ret < 0)
-		return ret;
-
-	/* set the codec system clock */
-	ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK,
-					    SND_SOC_CLOCK_OUT);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static struct snd_soc_ops s6105_ops = {
-	.hw_params = s6105_hw_params,
-};
-
-/* s6105 machine dapm widgets */
-static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
-	SND_SOC_DAPM_LINE("Audio Out Differential", NULL),
-	SND_SOC_DAPM_LINE("Audio Out Stereo", NULL),
-	SND_SOC_DAPM_LINE("Audio In", NULL),
-};
-
-/* s6105 machine audio_mapnections to the codec pins */
-static const struct snd_soc_dapm_route audio_map[] = {
-	/* Audio Out connected to HPLOUT, HPLCOM, HPROUT */
-	{"Audio Out Differential", NULL, "HPLOUT"},
-	{"Audio Out Differential", NULL, "HPLCOM"},
-	{"Audio Out Stereo", NULL, "HPLOUT"},
-	{"Audio Out Stereo", NULL, "HPROUT"},
-
-	/* Audio In connected to LINE1L, LINE1R */
-	{"LINE1L", NULL, "Audio In"},
-	{"LINE1R", NULL, "Audio In"},
-};
-
-static int output_type_info(struct snd_kcontrol *kcontrol,
-			    struct snd_ctl_elem_info *uinfo)
-{
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 2;
-	if (uinfo->value.enumerated.item) {
-		uinfo->value.enumerated.item = 1;
-		strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT");
-	} else {
-		strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM");
-	}
-	return 0;
-}
-
-static int output_type_get(struct snd_kcontrol *kcontrol,
-			   struct snd_ctl_elem_value *ucontrol)
-{
-	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
-	return 0;
-}
-
-static int output_type_put(struct snd_kcontrol *kcontrol,
-			   struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_soc_card *card = kcontrol->private_data;
-	struct snd_soc_dapm_context *dapm = &card->dapm;
-	unsigned int val = (ucontrol->value.enumerated.item[0] != 0);
-	char *differential = "Audio Out Differential";
-	char *stereo = "Audio Out Stereo";
-
-	if (kcontrol->private_value == val)
-		return 0;
-	kcontrol->private_value = val;
-	snd_soc_dapm_disable_pin(dapm, val ? differential : stereo);
-	snd_soc_dapm_sync(dapm);
-	snd_soc_dapm_enable_pin(dapm, val ? stereo : differential);
-	snd_soc_dapm_sync(dapm);
-
-	return 1;
-}
-
-static const struct snd_kcontrol_new audio_out_mux = {
-	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-	.name = "Master Output Mux",
-	.index = 0,
-	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
-	.info = output_type_info,
-	.get = output_type_get,
-	.put = output_type_put,
-	.private_value = 1 /* default to stereo */
-};
-
-/* Logic for a aic3x as connected on the s6105 ip camera ref design */
-static int s6105_aic3x_init(struct snd_soc_pcm_runtime *rtd)
-{
-	struct snd_soc_card *card = rtd->card;
-
-	/* must correspond to audio_out_mux.private_value initializer */
-	snd_soc_dapm_disable_pin(&card->dapm, "Audio Out Differential");
-
-	snd_ctl_add(card->snd_card, snd_ctl_new1(&audio_out_mux, card));
-
-	return 0;
-}
-
-/* s6105 digital audio interface glue - connects codec <--> CPU */
-static struct snd_soc_dai_link s6105_dai = {
-	.name = "TLV320AIC31",
-	.stream_name = "AIC31",
-	.cpu_dai_name = "s6000-i2s",
-	.codec_dai_name = "tlv320aic3x-hifi",
-	.platform_name = "s6000-pcm-audio",
-	.codec_name = "tlv320aic3x-codec.0-001a",
-	.init = s6105_aic3x_init,
-	.ops = &s6105_ops,
-};
-
-/* s6105 audio machine driver */
-static struct snd_soc_card snd_soc_card_s6105 = {
-	.name = "Stretch IP Camera",
-	.owner = THIS_MODULE,
-	.dai_link = &s6105_dai,
-	.num_links = 1,
-
-	.dapm_widgets = aic3x_dapm_widgets,
-	.num_dapm_widgets = ARRAY_SIZE(aic3x_dapm_widgets),
-	.dapm_routes = audio_map,
-	.num_dapm_routes = ARRAY_SIZE(audio_map),
-	.fully_routed = true,
-};
-
-static struct s6000_snd_platform_data s6105_snd_data __initdata = {
-	.wide		= 0,
-	.channel_in	= 0,
-	.channel_out	= 1,
-	.lines_in	= 1,
-	.lines_out	= 1,
-	.same_rate	= 1,
-};
-
-static struct platform_device *s6105_snd_device;
-
-/* temporary i2c device creation until this can be moved into the machine
- * support file.
-*/
-static struct i2c_board_info i2c_device[] = {
-	{ I2C_BOARD_INFO("tlv320aic33", 0x18), }
-};
-
-static int __init s6105_init(void)
-{
-	int ret;
-
-	i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device));
-
-	s6105_snd_device = platform_device_alloc("soc-audio", -1);
-	if (!s6105_snd_device)
-		return -ENOMEM;
-
-	platform_set_drvdata(s6105_snd_device, &snd_soc_card_s6105);
-	platform_device_add_data(s6105_snd_device, &s6105_snd_data,
-				 sizeof(s6105_snd_data));
-
-	ret = platform_device_add(s6105_snd_device);
-	if (ret)
-		platform_device_put(s6105_snd_device);
-
-	return ret;
-}
-
-static void __exit s6105_exit(void)
-{
-	platform_device_unregister(s6105_snd_device);
-}
-
-module_init(s6105_init);
-module_exit(s6105_exit);
-
-MODULE_AUTHOR("Daniel Gloeckner");
-MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
-MODULE_LICENSE("GPL");