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linux_dsm_epyc7002/sound/soc/kirkwood/kirkwood-i2s.c
Stephen Boyd cf9441adb1
ASoC: Remove dev_err() usage after platform_get_irq() 
We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// <smpl>
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: alsa-devel@alsa-project.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20190730181557.90391-50-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-02 12:12:31 +01:00

646 lines
16 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* kirkwood-i2s.c
*
* (c) 2010 Arnaud Patard <apatard@mandriva.com>
* (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/mbus.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/platform_data/asoc-kirkwood.h>
#include <linux/of.h>
#include "kirkwood.h"
#define KIRKWOOD_I2S_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
#define KIRKWOOD_SPDIF_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_LE)
static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
unsigned int fmt)
{
struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai);
unsigned long mask;
unsigned long value;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_RIGHT_J:
mask = KIRKWOOD_I2S_CTL_RJ;
break;
case SND_SOC_DAIFMT_LEFT_J:
mask = KIRKWOOD_I2S_CTL_LJ;
break;
case SND_SOC_DAIFMT_I2S:
mask = KIRKWOOD_I2S_CTL_I2S;
break;
default:
return -EINVAL;
}
/*
* Set same format for playback and record
* This avoids some troubles.
*/
value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL);
value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
value |= mask;
writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL);
value = readl(priv->io+KIRKWOOD_I2S_RECCTL);
value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
value |= mask;
writel(value, priv->io+KIRKWOOD_I2S_RECCTL);
return 0;
}
static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
{
unsigned long value;
value = KIRKWOOD_DCO_CTL_OFFSET_0;
switch (rate) {
default:
case 44100:
value |= KIRKWOOD_DCO_CTL_FREQ_11;
break;
case 48000:
value |= KIRKWOOD_DCO_CTL_FREQ_12;
break;
case 96000:
value |= KIRKWOOD_DCO_CTL_FREQ_24;
break;
}
writel(value, io + KIRKWOOD_DCO_CTL);
/* wait for dco locked */
do {
cpu_relax();
value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK;
} while (value == 0);
}
static void kirkwood_set_rate(struct snd_soc_dai *dai,
struct kirkwood_dma_data *priv, unsigned long rate)
{
uint32_t clks_ctrl;
if (IS_ERR(priv->extclk)) {
/* use internal dco for the supported rates
* defined in kirkwood_i2s_dai */
dev_dbg(dai->dev, "%s: dco set rate = %lu\n",
__func__, rate);
kirkwood_set_dco(priv->io, rate);
clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO;
} else {
/* use the external clock for the other rates
* defined in kirkwood_i2s_dai_extclk */
dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n",
__func__, rate, 256 * rate);
clk_set_rate(priv->extclk, 256 * rate);
clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK;
}
writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL);
}
static int kirkwood_i2s_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
snd_soc_dai_set_dma_data(dai, substream, priv);
return 0;
}
static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
uint32_t ctl_play, ctl_rec;
unsigned int i2s_reg;
unsigned long i2s_value;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
i2s_reg = KIRKWOOD_I2S_PLAYCTL;
} else {
i2s_reg = KIRKWOOD_I2S_RECCTL;
}
kirkwood_set_rate(dai, priv, params_rate(params));
i2s_value = readl(priv->io+i2s_reg);
i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
/*
* Size settings in play/rec i2s control regs and play/rec control
* regs must be the same.
*/
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16;
ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C |
KIRKWOOD_PLAYCTL_I2S_EN |
KIRKWOOD_PLAYCTL_SPDIF_EN;
ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C |
KIRKWOOD_RECCTL_I2S_EN |
KIRKWOOD_RECCTL_SPDIF_EN;
break;
/*
* doesn't work... S20_3LE != kirkwood 20bit format ?
*
case SNDRV_PCM_FORMAT_S20_3LE:
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 |
KIRKWOOD_PLAYCTL_I2S_EN;
ctl_rec = KIRKWOOD_RECCTL_SIZE_20 |
KIRKWOOD_RECCTL_I2S_EN;
break;
*/
case SNDRV_PCM_FORMAT_S24_LE:
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 |
KIRKWOOD_PLAYCTL_I2S_EN |
KIRKWOOD_PLAYCTL_SPDIF_EN;
ctl_rec = KIRKWOOD_RECCTL_SIZE_24 |
KIRKWOOD_RECCTL_I2S_EN |
KIRKWOOD_RECCTL_SPDIF_EN;
break;
case SNDRV_PCM_FORMAT_S32_LE:
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 |
KIRKWOOD_PLAYCTL_I2S_EN;
ctl_rec = KIRKWOOD_RECCTL_SIZE_32 |
KIRKWOOD_RECCTL_I2S_EN;
break;
default:
return -EINVAL;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (params_channels(params) == 1)
ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH;
else
ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF;
priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK |
KIRKWOOD_PLAYCTL_ENABLE_MASK |
KIRKWOOD_PLAYCTL_SIZE_MASK);
priv->ctl_play |= ctl_play;
} else {
priv->ctl_rec &= ~(KIRKWOOD_RECCTL_ENABLE_MASK |
KIRKWOOD_RECCTL_SIZE_MASK);
priv->ctl_rec |= ctl_rec;
}
writel(i2s_value, priv->io+i2s_reg);
return 0;
}
static unsigned kirkwood_i2s_play_mute(unsigned ctl)
{
if (!(ctl & KIRKWOOD_PLAYCTL_I2S_EN))
ctl |= KIRKWOOD_PLAYCTL_I2S_MUTE;
if (!(ctl & KIRKWOOD_PLAYCTL_SPDIF_EN))
ctl |= KIRKWOOD_PLAYCTL_SPDIF_MUTE;
return ctl;
}
static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
uint32_t ctl, value;
ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
if ((ctl & KIRKWOOD_PLAYCTL_ENABLE_MASK) == 0) {
unsigned timeout = 5000;
/*
* The Armada510 spec says that if we enter pause mode, the
* busy bit must be read back as clear _twice_. Make sure
* we respect that otherwise we get DMA underruns.
*/
do {
value = ctl;
ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY))
break;
udelay(1);
} while (timeout--);
if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)
dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n",
ctl);
}
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
/* configure */
ctl = priv->ctl_play;
if (dai->id == 0)
ctl &= ~KIRKWOOD_PLAYCTL_SPDIF_EN; /* i2s */
else
ctl &= ~KIRKWOOD_PLAYCTL_I2S_EN; /* spdif */
ctl = kirkwood_i2s_play_mute(ctl);
value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_PLAYCTL);
/* enable interrupts */
if (!runtime->no_period_wakeup) {
value = readl(priv->io + KIRKWOOD_INT_MASK);
value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
writel(value, priv->io + KIRKWOOD_INT_MASK);
}
/* enable playback */
writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
break;
case SNDRV_PCM_TRIGGER_STOP:
/* stop audio, disable interrupts */
ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
KIRKWOOD_PLAYCTL_SPDIF_MUTE;
writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
value = readl(priv->io + KIRKWOOD_INT_MASK);
value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
writel(value, priv->io + KIRKWOOD_INT_MASK);
/* disable all playbacks */
ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
KIRKWOOD_PLAYCTL_SPDIF_MUTE;
writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
break;
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
KIRKWOOD_PLAYCTL_SPDIF_MUTE);
ctl = kirkwood_i2s_play_mute(ctl);
writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
break;
default:
return -EINVAL;
}
return 0;
}
static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
uint32_t ctl, value;
value = readl(priv->io + KIRKWOOD_RECCTL);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
/* configure */
ctl = priv->ctl_rec;
if (dai->id == 0)
ctl &= ~KIRKWOOD_RECCTL_SPDIF_EN; /* i2s */
else
ctl &= ~KIRKWOOD_RECCTL_I2S_EN; /* spdif */
value = ctl & ~KIRKWOOD_RECCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_RECCTL);
/* enable interrupts */
value = readl(priv->io + KIRKWOOD_INT_MASK);
value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
writel(value, priv->io + KIRKWOOD_INT_MASK);
/* enable record */
writel(ctl, priv->io + KIRKWOOD_RECCTL);
break;
case SNDRV_PCM_TRIGGER_STOP:
/* stop audio, disable interrupts */
value = readl(priv->io + KIRKWOOD_RECCTL);
value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
writel(value, priv->io + KIRKWOOD_RECCTL);
value = readl(priv->io + KIRKWOOD_INT_MASK);
value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES;
writel(value, priv->io + KIRKWOOD_INT_MASK);
/* disable all records */
value = readl(priv->io + KIRKWOOD_RECCTL);
value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_RECCTL);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
value = readl(priv->io + KIRKWOOD_RECCTL);
value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
writel(value, priv->io + KIRKWOOD_RECCTL);
break;
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
value = readl(priv->io + KIRKWOOD_RECCTL);
value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE);
writel(value, priv->io + KIRKWOOD_RECCTL);
break;
default:
return -EINVAL;
}
return 0;
}
static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
return kirkwood_i2s_play_trigger(substream, cmd, dai);
else
return kirkwood_i2s_rec_trigger(substream, cmd, dai);
return 0;
}
static int kirkwood_i2s_init(struct kirkwood_dma_data *priv)
{
unsigned long value;
unsigned int reg_data;
/* put system in a "safe" state : */
/* disable audio interrupts */
writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE);
writel(0, priv->io + KIRKWOOD_INT_MASK);
reg_data = readl(priv->io + 0x1200);
reg_data &= (~(0x333FF8));
reg_data |= 0x111D18;
writel(reg_data, priv->io + 0x1200);
msleep(500);
reg_data = readl(priv->io + 0x1200);
reg_data &= (~(0x333FF8));
reg_data |= 0x111D18;
writel(reg_data, priv->io + 0x1200);
/* disable playback/record */
value = readl(priv->io + KIRKWOOD_PLAYCTL);
value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_PLAYCTL);
value = readl(priv->io + KIRKWOOD_RECCTL);
value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
writel(value, priv->io + KIRKWOOD_RECCTL);
return 0;
}
static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
.startup = kirkwood_i2s_startup,
.trigger = kirkwood_i2s_trigger,
.hw_params = kirkwood_i2s_hw_params,
.set_fmt = kirkwood_i2s_set_fmt,
};
static struct snd_soc_dai_driver kirkwood_i2s_dai[2] = {
{
.name = "i2s",
.id = 0,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_96000,
.formats = KIRKWOOD_I2S_FORMATS,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_96000,
.formats = KIRKWOOD_I2S_FORMATS,
},
.ops = &kirkwood_i2s_dai_ops,
},
{
.name = "spdif",
.id = 1,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_96000,
.formats = KIRKWOOD_SPDIF_FORMATS,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_96000,
.formats = KIRKWOOD_SPDIF_FORMATS,
},
.ops = &kirkwood_i2s_dai_ops,
},
};
static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk[2] = {
{
.name = "i2s",
.id = 0,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 5512,
.rate_max = 192000,
.formats = KIRKWOOD_I2S_FORMATS,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 5512,
.rate_max = 192000,
.formats = KIRKWOOD_I2S_FORMATS,
},
.ops = &kirkwood_i2s_dai_ops,
},
{
.name = "spdif",
.id = 1,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 5512,
.rate_max = 192000,
.formats = KIRKWOOD_SPDIF_FORMATS,
},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 5512,
.rate_max = 192000,
.formats = KIRKWOOD_SPDIF_FORMATS,
},
.ops = &kirkwood_i2s_dai_ops,
},
};
static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
{
struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data;
struct snd_soc_dai_driver *soc_dai = kirkwood_i2s_dai;
struct kirkwood_dma_data *priv;
struct device_node *np = pdev->dev.of_node;
int err;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_set_drvdata(&pdev->dev, priv);
priv->io = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->io))
return PTR_ERR(priv->io);
priv->irq = platform_get_irq(pdev, 0);
if (priv->irq < 0)
return priv->irq;
if (np) {
priv->burst = 128; /* might be 32 or 128 */
} else if (data) {
priv->burst = data->burst;
} else {
dev_err(&pdev->dev, "no DT nor platform data ?!\n");
return -EINVAL;
}
priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL);
if (IS_ERR(priv->clk)) {
dev_err(&pdev->dev, "no clock\n");
return PTR_ERR(priv->clk);
}
err = clk_prepare_enable(priv->clk);
if (err < 0)
return err;
priv->extclk = devm_clk_get(&pdev->dev, "extclk");
if (IS_ERR(priv->extclk)) {
if (PTR_ERR(priv->extclk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
} else {
if (clk_is_match(priv->extclk, priv->clk)) {
devm_clk_put(&pdev->dev, priv->extclk);
priv->extclk = ERR_PTR(-EINVAL);
} else {
dev_info(&pdev->dev, "found external clock\n");
clk_prepare_enable(priv->extclk);
soc_dai = kirkwood_i2s_dai_extclk;
}
}
/* Some sensible defaults - this reflects the powerup values */
priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24;
priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;
/* Select the burst size */
if (priv->burst == 32) {
priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32;
priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32;
} else {
priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128;
priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128;
}
err = devm_snd_soc_register_component(&pdev->dev, &kirkwood_soc_component,
soc_dai, 2);
if (err) {
dev_err(&pdev->dev, "snd_soc_register_component failed\n");
goto err_component;
}
kirkwood_i2s_init(priv);
return 0;
err_component:
if (!IS_ERR(priv->extclk))
clk_disable_unprepare(priv->extclk);
clk_disable_unprepare(priv->clk);
return err;
}
static int kirkwood_i2s_dev_remove(struct platform_device *pdev)
{
struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev);
if (!IS_ERR(priv->extclk))
clk_disable_unprepare(priv->extclk);
clk_disable_unprepare(priv->clk);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id mvebu_audio_of_match[] = {
{ .compatible = "marvell,kirkwood-audio" },
{ .compatible = "marvell,dove-audio" },
{ .compatible = "marvell,armada370-audio" },
{ }
};
MODULE_DEVICE_TABLE(of, mvebu_audio_of_match);
#endif
static struct platform_driver kirkwood_i2s_driver = {
.probe = kirkwood_i2s_dev_probe,
.remove = kirkwood_i2s_dev_remove,
.driver = {
.name = DRV_NAME,
.of_match_table = of_match_ptr(mvebu_audio_of_match),
},
};
module_platform_driver(kirkwood_i2s_driver);
/* Module information */
MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:mvebu-audio");
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