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Merge remote-tracking branches 'asoc/topic/ssm2518', 'asoc/topic/sta529', 'asoc/topic/sti' and 'asoc/topic/sti-sas' into asoc-next

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This commit is contained in:
Mark Brown
2015-08-30 15:57:13 +01:00
parent cfed47d7b5 601e457659 97a747117d e12909107c 601b9d9c7b
commit 0a5ff07757
14 changed files with 3770 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sound/soc/Kconfig
+1
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@@ -57,6 +57,7 @@ source "sound/soc/samsung/Kconfig"
source "sound/soc/sh/Kconfig"
source "sound/soc/sirf/Kconfig"
source "sound/soc/spear/Kconfig"
source "sound/soc/sti/Kconfig"
source "sound/soc/tegra/Kconfig"
source "sound/soc/txx9/Kconfig"
source "sound/soc/ux500/Kconfig"
sound/soc/Makefile
+1
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@@ -39,6 +39,7 @@ obj-$(CONFIG_SND_SOC) += samsung/
obj-$(CONFIG_SND_SOC) += sh/
obj-$(CONFIG_SND_SOC) += sirf/
obj-$(CONFIG_SND_SOC) += spear/
obj-$(CONFIG_SND_SOC) += sti/
obj-$(CONFIG_SND_SOC) += tegra/
obj-$(CONFIG_SND_SOC) += txx9/
obj-$(CONFIG_SND_SOC) += ux500/
sound/soc/codecs/Kconfig
+4
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@@ -106,6 +106,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_STA350 if I2C
select SND_SOC_STA529 if I2C
select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
select SND_SOC_STI_SAS
select SND_SOC_TAS2552 if I2C
select SND_SOC_TAS5086 if I2C
select SND_SOC_TAS571X if I2C
@@ -631,6 +632,9 @@ config SND_SOC_STA529
config SND_SOC_STAC9766
tristate
config SND_SOC_STI_SAS
tristate "codec Audio support for STI SAS codec"
config SND_SOC_TAS2552
tristate "Texas Instruments TAS2552 Mono Audio amplifier"
depends on I2C
sound/soc/codecs/Makefile
+2
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@@ -110,6 +110,7 @@ snd-soc-sta32x-objs := sta32x.o
snd-soc-sta350-objs := sta350.o
snd-soc-sta529-objs := sta529.o
snd-soc-stac9766-objs := stac9766.o
snd-soc-sti-sas-objs := sti-sas.o
snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tfa9879-objs := tfa9879.o
@@ -297,6 +298,7 @@ obj-$(CONFIG_SND_SOC_STA32X) += snd-soc-sta32x.o
obj-$(CONFIG_SND_SOC_STA350) += snd-soc-sta350.o
obj-$(CONFIG_SND_SOC_STA529) += snd-soc-sta529.o
obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
obj-$(CONFIG_SND_SOC_STI_SAS) += snd-soc-sti-sas.o
obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
sound/soc/codecs/ssm2518.c
+9
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@@ -806,6 +806,14 @@ static int ssm2518_i2c_remove(struct i2c_client *client)
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id ssm2518_dt_ids[] = {
{ .compatible = "adi,ssm2518", },
{ }
};
MODULE_DEVICE_TABLE(of, ssm2518_dt_ids);
#endif
static const struct i2c_device_id ssm2518_i2c_ids[] = {
{ "ssm2518", 0 },
{ }
@@ -815,6 +823,7 @@ MODULE_DEVICE_TABLE(i2c, ssm2518_i2c_ids);
static struct i2c_driver ssm2518_driver = {
.driver = {
.name = "ssm2518",
.of_match_table = of_match_ptr(ssm2518_dt_ids),
},
.probe = ssm2518_i2c_probe,
.remove = ssm2518_i2c_remove,
sound/soc/codecs/sta529.c
-3
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@@ -339,9 +339,6 @@ static int sta529_i2c_probe(struct i2c_client *i2c,
struct sta529 *sta529;
int ret;
if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EINVAL;
sta529 = devm_kzalloc(&i2c->dev, sizeof(struct sta529), GFP_KERNEL);
if (!sta529)
return -ENOMEM;
sound/soc/codecs/sti-sas.c
+628
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File diff suppressed because it is too large Load Diff
sound/soc/sti/Kconfig
+11
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@@ -0,0 +1,11 @@
#
# STM SoC audio configuration
#
menuconfig SND_SOC_STI
tristate "SoC Audio support for STI System-On-Chip"
depends on SND_SOC
depends on ARCH_STI || COMPILE_TEST
select SND_SOC_GENERIC_DMAENGINE_PCM
help
Say Y if you want to enable ASoC-support for
any of the STI platforms (e.g. STIH416).
sound/soc/sti/Makefile
+4
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@@ -0,0 +1,4 @@
# STI platform support
snd-soc-sti-objs := sti_uniperif.o uniperif_player.o uniperif_reader.o
obj-$(CONFIG_SND_SOC_STI) += snd-soc-sti.o
sound/soc/sti/sti_uniperif.c
+254
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@@ -0,0 +1,254 @@
/*
* Copyright (C) STMicroelectronics SA 2015
* Authors: Arnaud Pouliquen <arnaud.pouliquen@st.com>
* for STMicroelectronics.
* License terms: GNU General Public License (GPL), version 2
*/
#include <linux/module.h>
#include <linux/pinctrl/consumer.h>
#include "uniperif.h"
/*
* sti_uniperiph_dai_create_ctrl
* This function is used to create Ctrl associated to DAI but also pcm device.
* Request is done by front end to associate ctrl with pcm device id
*/
static int sti_uniperiph_dai_create_ctrl(struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *uni = priv->dai_data.uni;
struct snd_kcontrol_new *ctrl;
int i;
if (!uni->num_ctrls)
return 0;
for (i = 0; i < uni->num_ctrls; i++) {
/*
* Several Control can have same name. Controls are indexed on
* Uniperipheral instance ID
*/
ctrl = &uni->snd_ctrls[i];
ctrl->index = uni->info->id;
ctrl->device = uni->info->id;
}
return snd_soc_add_dai_controls(dai, uni->snd_ctrls, uni->num_ctrls);
}
/*
* DAI
*/
int sti_uniperiph_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_dmaengine_dai_dma_data *dma_data;
int transfer_size;
transfer_size = params_channels(params) * UNIPERIF_FIFO_FRAMES;
dma_data = snd_soc_dai_get_dma_data(dai, substream);
dma_data->maxburst = transfer_size;
return 0;
}
int sti_uniperiph_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
priv->dai_data.uni->daifmt = fmt;
return 0;
}
static int sti_uniperiph_dai_suspend(struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *uni = priv->dai_data.uni;
int ret;
/* The uniperipheral should be in stopped state */
if (uni->state != UNIPERIF_STATE_STOPPED) {
dev_err(uni->dev, "%s: invalid uni state( %d)",
__func__, (int)uni->state);
return -EBUSY;
}
/* Pinctrl: switch pinstate to sleep */
ret = pinctrl_pm_select_sleep_state(uni->dev);
if (ret)
dev_err(uni->dev, "%s: failed to select pinctrl state",
__func__);
return ret;
}
static int sti_uniperiph_dai_resume(struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *uni = priv->dai_data.uni;
int ret;
if (of_device_is_compatible(dai->dev->of_node, "st,sti-uni-player")) {
ret = uni_player_resume(uni);
if (ret)
return ret;
}
/* pinctrl: switch pinstate to default */
ret = pinctrl_pm_select_default_state(uni->dev);
if (ret)
dev_err(uni->dev, "%s: failed to select pinctrl state",
__func__);
return ret;
}
static int sti_uniperiph_dai_probe(struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct sti_uniperiph_dai *dai_data = &priv->dai_data;
/* DMA settings*/
if (of_device_is_compatible(dai->dev->of_node, "st,sti-uni-player"))
snd_soc_dai_init_dma_data(dai, &dai_data->dma_data, NULL);
else
snd_soc_dai_init_dma_data(dai, NULL, &dai_data->dma_data);
dai_data->dma_data.addr = dai_data->uni->fifo_phys_address;
dai_data->dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
return sti_uniperiph_dai_create_ctrl(dai);
}
static const struct snd_soc_dai_driver sti_uniperiph_dai_template = {
.probe = sti_uniperiph_dai_probe,
.suspend = sti_uniperiph_dai_suspend,
.resume = sti_uniperiph_dai_resume
};
static const struct snd_soc_component_driver sti_uniperiph_dai_component = {
.name = "sti_cpu_dai",
};
static int sti_uniperiph_cpu_dai_of(struct device_node *node,
struct sti_uniperiph_data *priv)
{
const char *str;
int ret;
struct device *dev = &priv->pdev->dev;
struct sti_uniperiph_dai *dai_data = &priv->dai_data;
struct snd_soc_dai_driver *dai = priv->dai;
struct snd_soc_pcm_stream *stream;
struct uniperif *uni;
uni = devm_kzalloc(dev, sizeof(*uni), GFP_KERNEL);
if (!uni)
return -ENOMEM;
*dai = sti_uniperiph_dai_template;
ret = of_property_read_string(node, "dai-name", &str);
if (ret < 0) {
dev_err(dev, "%s: dai name missing.\n", __func__);
return -EINVAL;
}
dai->name = str;
/* Get resources */
uni->mem_region = platform_get_resource(priv->pdev, IORESOURCE_MEM, 0);
if (!uni->mem_region) {
dev_err(dev, "Failed to get memory resource");
return -ENODEV;
}
uni->base = devm_ioremap_resource(dev, uni->mem_region);
if (IS_ERR(uni->base))
return PTR_ERR(uni->base);
uni->fifo_phys_address = uni->mem_region->start +
UNIPERIF_FIFO_DATA_OFFSET(uni);
uni->irq = platform_get_irq(priv->pdev, 0);
if (uni->irq < 0) {
dev_err(dev, "Failed to get IRQ resource");
return -ENXIO;
}
dai_data->uni = uni;
if (of_device_is_compatible(node, "st,sti-uni-player")) {
uni_player_init(priv->pdev, uni);
stream = &dai->playback;
} else {
uni_reader_init(priv->pdev, uni);
stream = &dai->capture;
}
dai->ops = uni->dai_ops;
stream->stream_name = dai->name;
stream->channels_min = uni->hw->channels_min;
stream->channels_max = uni->hw->channels_max;
stream->rates = uni->hw->rates;
stream->formats = uni->hw->formats;
return 0;
}
static const struct snd_dmaengine_pcm_config dmaengine_pcm_config = {
.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
};
static int sti_uniperiph_probe(struct platform_device *pdev)
{
struct sti_uniperiph_data *priv;
struct device_node *node = pdev->dev.of_node;
int ret;
/* Allocate the private data and the CPU_DAI array */
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->dai = devm_kzalloc(&pdev->dev, sizeof(*priv->dai), GFP_KERNEL);
if (!priv->dai)
return -ENOMEM;
priv->pdev = pdev;
ret = sti_uniperiph_cpu_dai_of(node, priv);
dev_set_drvdata(&pdev->dev, priv);
ret = devm_snd_soc_register_component(&pdev->dev,
&sti_uniperiph_dai_component,
priv->dai, 1);
if (ret < 0)
return ret;
return devm_snd_dmaengine_pcm_register(&pdev->dev,
&dmaengine_pcm_config, 0);
}
static const struct of_device_id snd_soc_sti_match[] = {
{ .compatible = "st,sti-uni-player", },
{ .compatible = "st,sti-uni-reader", },
{},
};
static struct platform_driver sti_uniperiph_driver = {
.driver = {
.name = "sti-uniperiph-dai",
.of_match_table = snd_soc_sti_match,
},
.probe = sti_uniperiph_probe,
};
module_platform_driver(sti_uniperiph_driver);
MODULE_DESCRIPTION("uniperipheral DAI driver");
MODULE_AUTHOR("Arnaud Pouliquen <arnaud.pouliquen@st.com>");
MODULE_LICENSE("GPL v2");
sound/soc/sti/uniperif.h
+1229
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File diff suppressed because it is too large Load Diff
sound/soc/sti/uniperif_player.c
+1110
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File diff suppressed because it is too large Load Diff
sound/soc/sti/uniperif_reader.c
+362
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@@ -0,0 +1,362 @@
/*
* Copyright (C) STMicroelectronics SA 2015
* Authors: Arnaud Pouliquen <arnaud.pouliquen@st.com>
* for STMicroelectronics.
* License terms: GNU General Public License (GPL), version 2
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <sound/soc.h>
#include "uniperif.h"
/*
* Note: snd_pcm_hardware is linked to DMA controller but is declared here to
* integrate unireader capability in term of rate and supported channels
*/
static const struct snd_pcm_hardware uni_reader_pcm_hw = {
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID,
.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 8000,
.rate_max = 96000,
.channels_min = 2,
.channels_max = 8,
.periods_min = 2,
.periods_max = 48,
.period_bytes_min = 128,
.period_bytes_max = 64 * PAGE_SIZE,
.buffer_bytes_max = 256 * PAGE_SIZE
};
/*
* uni_reader_irq_handler
* In case of error audio stream is stopped; stop action is protected via PCM
* stream lock to avoid race condition with trigger callback.
*/
static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id)
{
irqreturn_t ret = IRQ_NONE;
struct uniperif *reader = dev_id;
unsigned int status;
if (reader->state == UNIPERIF_STATE_STOPPED) {
/* Unexpected IRQ: do nothing */
dev_warn(reader->dev, "unexpected IRQ ");
return IRQ_HANDLED;
}
/* Get interrupt status & clear them immediately */
status = GET_UNIPERIF_ITS(reader);
SET_UNIPERIF_ITS_BCLR(reader, status);
/* Check for fifo overflow error */
if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(reader))) {
dev_err(reader->dev, "FIFO error detected");
snd_pcm_stream_lock(reader->substream);
snd_pcm_stop(reader->substream, SNDRV_PCM_STATE_XRUN);
snd_pcm_stream_unlock(reader->substream);
return IRQ_HANDLED;
}
return ret;
}
static int uni_reader_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *reader = priv->dai_data.uni;
struct snd_pcm_runtime *runtime = substream->runtime;
int transfer_size, trigger_limit;
int slot_width;
int count = 10;
/* The reader should be stopped */
if (reader->state != UNIPERIF_STATE_STOPPED) {
dev_err(reader->dev, "%s: invalid reader state %d", __func__,
reader->state);
return -EINVAL;
}
/* Calculate transfer size (in fifo cells and bytes) for frame count */
transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES;
/* Calculate number of empty cells available before asserting DREQ */
if (reader->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
trigger_limit = UNIPERIF_FIFO_SIZE - transfer_size;
else
/*
* Since SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0
* FDMA_TRIGGER_LIMIT also controls when the state switches
* from OFF or STANDBY to AUDIO DATA.
*/
trigger_limit = transfer_size;
/* Trigger limit must be an even number */
if ((!trigger_limit % 2) ||
(trigger_limit != 1 && transfer_size % 2) ||
(trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(reader))) {
dev_err(reader->dev, "invalid trigger limit %d", trigger_limit);
return -EINVAL;
}
SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(reader, trigger_limit);
switch (reader->daifmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_IB_IF:
case SND_SOC_DAIFMT_NB_IF:
SET_UNIPERIF_I2S_FMT_LR_POL_HIG(reader);
break;
default:
SET_UNIPERIF_I2S_FMT_LR_POL_LOW(reader);
}
/* Force slot width to 32 in I2S mode */
if ((reader->daifmt & SND_SOC_DAIFMT_FORMAT_MASK)
== SND_SOC_DAIFMT_I2S) {
slot_width = 32;
} else {
switch (runtime->format) {
case SNDRV_PCM_FORMAT_S16_LE:
slot_width = 16;
break;
default:
slot_width = 32;
break;
}
}
/* Number of bits per subframe (i.e one channel sample) on input. */
switch (slot_width) {
case 32:
SET_UNIPERIF_I2S_FMT_NBIT_32(reader);
SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(reader);
break;
case 16:
SET_UNIPERIF_I2S_FMT_NBIT_16(reader);
SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(reader);
break;
default:
dev_err(reader->dev, "subframe format not supported");
return -EINVAL;
}
/* Configure data memory format */
switch (runtime->format) {
case SNDRV_PCM_FORMAT_S16_LE:
/* One data word contains two samples */
SET_UNIPERIF_CONFIG_MEM_FMT_16_16(reader);
break;
case SNDRV_PCM_FORMAT_S32_LE:
/*
* Actually "16 bits/0 bits" means "32/28/24/20/18/16 bits
* on the MSB then zeros (if less than 32 bytes)"...
*/
SET_UNIPERIF_CONFIG_MEM_FMT_16_0(reader);
break;
default:
dev_err(reader->dev, "format not supported");
return -EINVAL;
}
switch (reader->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader);
SET_UNIPERIF_I2S_FMT_PADDING_I2S_MODE(reader);
break;
case SND_SOC_DAIFMT_LEFT_J:
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader);
SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(reader);
break;
case SND_SOC_DAIFMT_RIGHT_J:
SET_UNIPERIF_I2S_FMT_ALIGN_RIGHT(reader);
SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(reader);
break;
default:
dev_err(reader->dev, "format not supported");
return -EINVAL;
}
SET_UNIPERIF_I2S_FMT_ORDER_MSB(reader);
/* Data clocking (changing) on the rising edge */
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(reader);
/* Number of channels must be even */
if ((runtime->channels % 2) || (runtime->channels < 2) ||
(runtime->channels > 10)) {
dev_err(reader->dev, "%s: invalid nb of channels", __func__);
return -EINVAL;
}
SET_UNIPERIF_I2S_FMT_NUM_CH(reader, runtime->channels / 2);
/* Clear any pending interrupts */
SET_UNIPERIF_ITS_BCLR(reader, GET_UNIPERIF_ITS(reader));
SET_UNIPERIF_I2S_FMT_NO_OF_SAMPLES_TO_READ(reader, 0);
/* Set the interrupt mask */
SET_UNIPERIF_ITM_BSET_DMA_ERROR(reader);
SET_UNIPERIF_ITM_BSET_FIFO_ERROR(reader);
SET_UNIPERIF_ITM_BSET_MEM_BLK_READ(reader);
/* Enable underflow recovery interrupts */
if (reader->info->underflow_enabled) {
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(reader);
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(reader);
}
/* Reset uniperipheral reader */
SET_UNIPERIF_SOFT_RST_SOFT_RST(reader);
while (GET_UNIPERIF_SOFT_RST_SOFT_RST(reader)) {
udelay(5);
count--;
}
if (!count) {
dev_err(reader->dev, "Failed to reset uniperif");
return -EIO;
}
return 0;
}
static int uni_reader_start(struct uniperif *reader)
{
/* The reader should be stopped */
if (reader->state != UNIPERIF_STATE_STOPPED) {
dev_err(reader->dev, "%s: invalid reader state", __func__);
return -EINVAL;
}
/* Enable reader interrupts (and clear possible stalled ones) */
SET_UNIPERIF_ITS_BCLR_FIFO_ERROR(reader);
SET_UNIPERIF_ITM_BSET_FIFO_ERROR(reader);
/* Launch the reader */
SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(reader);
/* Update state to started */
reader->state = UNIPERIF_STATE_STARTED;
return 0;
}
static int uni_reader_stop(struct uniperif *reader)
{
/* The reader should not be in stopped state */
if (reader->state == UNIPERIF_STATE_STOPPED) {
dev_err(reader->dev, "%s: invalid reader state", __func__);
return -EINVAL;
}
/* Turn the reader off */
SET_UNIPERIF_CTRL_OPERATION_OFF(reader);
/* Disable interrupts */
SET_UNIPERIF_ITM_BCLR(reader, GET_UNIPERIF_ITM(reader));
/* Update state to stopped and return */
reader->state = UNIPERIF_STATE_STOPPED;
return 0;
}
static int uni_reader_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *reader = priv->dai_data.uni;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
return uni_reader_start(reader);
case SNDRV_PCM_TRIGGER_STOP:
return uni_reader_stop(reader);
default:
return -EINVAL;
}
}
static void uni_reader_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *reader = priv->dai_data.uni;
if (reader->state != UNIPERIF_STATE_STOPPED) {
/* Stop the reader */
uni_reader_stop(reader);
}
}
static int uni_reader_parse_dt(struct platform_device *pdev,
struct uniperif *reader)
{
struct uniperif_info *info;
struct device_node *node = pdev->dev.of_node;
/* Allocate memory for the info structure */
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
of_property_read_u32(node, "version", &reader->ver);
/* Save the info structure */
reader->info = info;
return 0;
}
static const struct snd_soc_dai_ops uni_reader_dai_ops = {
.shutdown = uni_reader_shutdown,
.prepare = uni_reader_prepare,
.trigger = uni_reader_trigger,
.hw_params = sti_uniperiph_dai_hw_params,
.set_fmt = sti_uniperiph_dai_set_fmt,
};
int uni_reader_init(struct platform_device *pdev,
struct uniperif *reader)
{
int ret = 0;
reader->dev = &pdev->dev;
reader->state = UNIPERIF_STATE_STOPPED;
reader->hw = &uni_reader_pcm_hw;
reader->dai_ops = &uni_reader_dai_ops;
dev_err(reader->dev, "%s: enter\n", __func__);
ret = uni_reader_parse_dt(pdev, reader);
if (ret < 0) {
dev_err(reader->dev, "Failed to parse DeviceTree");
return ret;
}
ret = devm_request_irq(&pdev->dev, reader->irq,
uni_reader_irq_handler, IRQF_SHARED,
dev_name(&pdev->dev), reader);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to request IRQ");
return -EBUSY;
}
return 0;
}
EXPORT_SYMBOL_GPL(uni_reader_init);