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linux/sound/soc/s6000/s6000-i2s.c
Liam Girdwood f0fba2ad1b ASoC: multi-component - ASoC Multi-Component Support 
This patch extends the ASoC API to allow sound cards to have more than one
CODEC and more than one platform DMA controller. This is achieved by dividing
some current ASoC structures that contain both driver data and device data into
structures that only either contain device data or driver data. i.e.

 struct snd_soc_codec    --->  struct snd_soc_codec (device data)
                          +->  struct snd_soc_codec_driver (driver data)

 struct snd_soc_platform --->  struct snd_soc_platform (device data)
                          +->  struct snd_soc_platform_driver (driver data)

 struct snd_soc_dai      --->  struct snd_soc_dai (device data)
                          +->  struct snd_soc_dai_driver (driver data)

 struct snd_soc_device   --->  deleted

This now allows ASoC to be more tightly aligned with the Linux driver model and
also means that every ASoC codec, platform and (platform) DAI is a kernel
device. ASoC component private data is now stored as device private data.

The ASoC sound card struct snd_soc_card has also been updated to store lists
of it's components rather than a pointer to a codec and platform. The PCM
runtime struct soc_pcm_runtime now has pointers to all its components.

This patch adds DAPM support for ASoC multi-component and removes struct
snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec
or runtime PCM level basis rather than using snd_soc_socdev.

Other notable multi-component changes:-

 * Stream operations now de-reference less structures.
 * close_delayed work() now runs on a DAI basis rather than looping all DAIs
   in a card.
 * PM suspend()/resume() operations can now handle N CODECs and Platforms
   per sound card.
 * Added soc_bind_dai_link() to bind the component devices to the sound card.
 * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove
   DAI link components.
 * sysfs entries can now be registered per component per card.
 * snd_soc_new_pcms() functionailty rolled into dai_link_probe().
 * snd_soc_register_codec() now does all the codec list and mutex init.

This patch changes the probe() and remove() of the CODEC drivers as follows:-

 o Make CODEC driver a platform driver
 o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core.
 o Removed all static codec pointers (drivers now support > 1 codec dev)
 o snd_soc_register_pcms() now done by core.
 o snd_soc_register_dai() folded into snd_soc_register_codec().

CS4270 portions:
Acked-by: Timur Tabi <timur@freescale.com>

Some TLV320aic23 and Cirrus platform fixes.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>

TI CODEC and OMAP fixes
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>

Samsung platform and misc fixes :-
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>

MPC8610 and PPC fixes.
Signed-off-by: Timur Tabi <timur@freescale.com>

i.MX fixes and some core fixes.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

J4740 platform fixes:-
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

CC: Tony Lindgren <tony@atomide.com>
CC: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: Kevin Hilman <khilman@deeprootsystems.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
CC: Kuninori Morimoto <morimoto.kuninori@renesas.com>
CC: Daniel Gloeckner <dg@emlix.com>
CC: Manuel Lauss <mano@roarinelk.homelinux.net>
CC: Mike Frysinger <vapier.adi@gmail.com>
CC: Arnaud Patard <apatard@mandriva.com>
CC: Wan ZongShun <mcuos.com@gmail.com>

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-08-12 14:00:00 +01:00

621 lines
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/*
* 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 | SNDRV_PCM_RATE_5512 | \
SNDRV_PCM_RATE_8000_192000)
#define S6000_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
static 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 int __devinit 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_dai(&pdev->dev, &s6000_i2s_dai);
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 void __devexit 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_dai(&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));
}
static struct platform_driver s6000_i2s_driver = {
.probe = s6000_i2s_probe,
.remove = __devexit_p(s6000_i2s_remove),
.driver = {
.name = "s6000-i2s",
.owner = THIS_MODULE,
},
};
static int __init s6000_i2s_init(void)
{
return platform_driver_register(&s6000_i2s_driver);
}
module_init(s6000_i2s_init);
static void __exit s6000_i2s_exit(void)
{
platform_driver_unregister(&s6000_i2s_driver);
}
module_exit(s6000_i2s_exit);
MODULE_AUTHOR("Daniel Gloeckner");
MODULE_DESCRIPTION("Stretch s6000 family I2S SoC Interface");
MODULE_LICENSE("GPL");
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