[RFC patch v3 3/4] ASoC: atmel-ssc-dai: register dai and pcm directly
Bo Shen
voice.shen at atmel.com
Tue Nov 6 00:57:53 EST 2012
Register dai and pcm directly
fix issue when register dai and pcm directly
Add device tree support
Signed-off-by: Bo Shen <voice.shen at atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre at atmel.com>
---
Change since v2
- Register dai and pcm directly according to Mark Brown's suggestion
- using name to distinguish ssc register for audio or library
if for audio, the name with dai subfix
if for library, the name without dai subfix
- fix the issue for sam9g20-wm8731
- when register dai and pcm cause the sam9g20-wm8731 doesn't work,
so fix it
- Add device tree support
- Detail information reference atmel-ssc-dai.txt binding document
Change since v1
No change
---
.../devicetree/bindings/sound/atmel-ssc-dai.txt | 15 +
arch/arm/mach-at91/at91sam9260.c | 2 +-
arch/arm/mach-at91/at91sam9260_devices.c | 5 +-
arch/arm/mach-at91/board-sam9g20ek.c | 6 -
sound/soc/atmel/Kconfig | 3 +-
sound/soc/atmel/atmel-pcm.c | 23 +-
sound/soc/atmel/atmel-pcm.h | 3 +
sound/soc/atmel/atmel_ssc_dai.c | 319 +++++++++-----------
sound/soc/atmel/sam9g20_wm8731.c | 4 +-
9 files changed, 175 insertions(+), 205 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sound/atmel-ssc-dai.txt
diff --git a/Documentation/devicetree/bindings/sound/atmel-ssc-dai.txt b/Documentation/devicetree/bindings/sound/atmel-ssc-dai.txt
new file mode 100644
index 0000000..48ec22a
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/atmel-ssc-dai.txt
@@ -0,0 +1,15 @@
+* Atmel SSC audio driver.
+
+Required properties:
+- compatible: "atmel,at91rm9200-ssc-dai" or "atmel,at91sam9g45-ssc-dai"
+ - atmel,at91rm9200-ssc-dai: support pdc transfer
+ - atmel,at91sam9g45-ssc-dai: support dma transfer
+- reg: Should contain SSC registers location and length
+- interrupts: Should contain SSC interrupt
+
+Example:
+ssc0: ssc at fffbc000 {
+ compatible = "atmel,at91rm9200-ssc-dai";
+ reg = <0xfffbc000 0x4000>;
+ interrupts = <14 4 5>;
+};
diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index 54d4aea..859526d 100644
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -210,7 +210,7 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
- CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc_clk),
+ CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc_dai.0", &ssc_clk),
CLKDEV_CON_DEV_ID("pclk", "fffbc000.ssc", &ssc_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9260", &twi_clk),
CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20", &twi_clk),
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index 9cfdc3f..c7ad6ee 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -725,7 +725,8 @@ static void __init at91_add_device_watchdog(void) {}
* SSC -- Synchronous Serial Controller
* -------------------------------------------------------------------- */
-#if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
+#if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE) || \
+ defined(CONFIG_SND_ATMEL_SOC) || defined(CONFIG_SND_ATMEL_SOC_MODULE)
static u64 ssc_dmamask = DMA_BIT_MASK(32);
static struct resource ssc_resources[] = {
@@ -742,7 +743,7 @@ static struct resource ssc_resources[] = {
};
static struct platform_device at91sam9260_ssc_device = {
- .name = "at91rm9200_ssc",
+ .name = "at91rm9200_ssc_dai",
.id = 0,
.dev = {
.dma_mask = &ssc_dmamask,
diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c
index 5b6a6f9..ebdbf42 100644
--- a/arch/arm/mach-at91/board-sam9g20ek.c
+++ b/arch/arm/mach-at91/board-sam9g20ek.c
@@ -353,11 +353,6 @@ static struct i2c_board_info __initdata ek_i2c_devices[] = {
},
};
-static struct platform_device sam9g20ek_pcm_device = {
- .name = "atmel-pcm-audio",
- .id = -1,
-};
-
static struct platform_device sam9g20ek_audio_device = {
.name = "at91sam9g20ek-audio",
.id = -1,
@@ -365,7 +360,6 @@ static struct platform_device sam9g20ek_audio_device = {
static void __init ek_add_device_audio(void)
{
- platform_device_register(&sam9g20ek_pcm_device);
platform_device_register(&sam9g20ek_audio_device);
}
diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig
index 72b09cf..b51ba54 100644
--- a/sound/soc/atmel/Kconfig
+++ b/sound/soc/atmel/Kconfig
@@ -16,8 +16,7 @@ config SND_ATMEL_SOC_SSC
config SND_AT91_SOC_SAM9G20_WM8731
tristate "SoC Audio support for WM8731-based At91sam9g20 evaluation board"
- depends on ATMEL_SSC && ARCH_AT91SAM9G20 && SND_ATMEL_SOC && \
- AT91_PROGRAMMABLE_CLOCKS
+ depends on SND_ATMEL_SOC && AT91_PROGRAMMABLE_CLOCKS
select SND_ATMEL_SOC_SSC
select SND_SOC_WM8731
help
diff --git a/sound/soc/atmel/atmel-pcm.c b/sound/soc/atmel/atmel-pcm.c
index 9b84f98..1e9cd2c 100644
--- a/sound/soc/atmel/atmel-pcm.c
+++ b/sound/soc/atmel/atmel-pcm.c
@@ -473,28 +473,17 @@ static struct snd_soc_platform_driver atmel_soc_platform = {
.resume = atmel_pcm_resume,
};
-static int __devinit atmel_soc_platform_probe(struct platform_device *pdev)
+int __devinit atmel_pcm_platform_register(struct device *dev)
{
- return snd_soc_register_platform(&pdev->dev, &atmel_soc_platform);
+ return snd_soc_register_platform(dev, &atmel_soc_platform);
}
+EXPORT_SYMBOL(atmel_pcm_platform_register);
-static int __devexit atmel_soc_platform_remove(struct platform_device *pdev)
+void __devexit atmel_pcm_platform_unregister(struct device *dev)
{
- snd_soc_unregister_platform(&pdev->dev);
- return 0;
+ snd_soc_unregister_platform(dev);
}
-
-static struct platform_driver atmel_pcm_driver = {
- .driver = {
- .name = "atmel-pcm-audio",
- .owner = THIS_MODULE,
- },
-
- .probe = atmel_soc_platform_probe,
- .remove = __devexit_p(atmel_soc_platform_remove),
-};
-
-module_platform_driver(atmel_pcm_driver);
+EXPORT_SYMBOL(atmel_pcm_platform_unregister);
MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou at atmel.com>");
MODULE_DESCRIPTION("Atmel PCM module");
diff --git a/sound/soc/atmel/atmel-pcm.h b/sound/soc/atmel/atmel-pcm.h
index 5e0a95e..e6d67b3 100644
--- a/sound/soc/atmel/atmel-pcm.h
+++ b/sound/soc/atmel/atmel-pcm.h
@@ -80,4 +80,7 @@ struct atmel_pcm_dma_params {
#define ssc_readx(base, reg) (__raw_readl((base) + (reg)))
#define ssc_writex(base, reg, value) __raw_writel((value), (base) + (reg))
+int atmel_pcm_platform_register(struct device *dev);
+void atmel_pcm_platform_unregister(struct device *dev);
+
#endif /* _ATMEL_PCM_H */
diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index 354341e..81e3604 100644
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -42,18 +42,13 @@
#include <sound/initval.h>
#include <sound/soc.h>
+#include <linux/of.h>
+
#include <mach/hardware.h>
#include "atmel-pcm.h"
#include "atmel_ssc_dai.h"
-
-#if defined(CONFIG_ARCH_AT91SAM9260) || defined(CONFIG_ARCH_AT91SAM9G20)
-#define NUM_SSC_DEVICES 1
-#else
-#define NUM_SSC_DEVICES 3
-#endif
-
/*
* SSC PDC registers required by the PCM DMA engine.
*/
@@ -96,63 +91,24 @@ static struct atmel_ssc_mask ssc_rx_mask = {
/*
* DMA parameters.
*/
-static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = {
- {{
- .name = "SSC0 PCM out",
- .pdc = &pdc_tx_reg,
- .mask = &ssc_tx_mask,
- },
+static struct atmel_pcm_dma_params ssc_dma_params[2] = {
{
- .name = "SSC0 PCM in",
- .pdc = &pdc_rx_reg,
- .mask = &ssc_rx_mask,
- } },
-#if NUM_SSC_DEVICES == 3
- {{
- .name = "SSC1 PCM out",
+ .name = "SSC PCM out",
.pdc = &pdc_tx_reg,
.mask = &ssc_tx_mask,
},
{
- .name = "SSC1 PCM in",
+ .name = "SSC PCM in",
.pdc = &pdc_rx_reg,
.mask = &ssc_rx_mask,
- } },
- {{
- .name = "SSC2 PCM out",
- .pdc = &pdc_tx_reg,
- .mask = &ssc_tx_mask,
},
- {
- .name = "SSC2 PCM in",
- .pdc = &pdc_rx_reg,
- .mask = &ssc_rx_mask,
- } },
-#endif
};
-
-static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = {
- {
- .name = "ssc0",
- .lock = __SPIN_LOCK_UNLOCKED(ssc_info[0].lock),
+static struct atmel_ssc_info ssc_info = {
+ .name = "ssc",
+ .lock = __SPIN_LOCK_UNLOCKED(ssc_info.lock),
.dir_mask = SSC_DIR_MASK_UNUSED,
.initialized = 0,
- },
-#if NUM_SSC_DEVICES == 3
- {
- .name = "ssc1",
- .lock = __SPIN_LOCK_UNLOCKED(ssc_info[1].lock),
- .dir_mask = SSC_DIR_MASK_UNUSED,
- .initialized = 0,
- },
- {
- .name = "ssc2",
- .lock = __SPIN_LOCK_UNLOCKED(ssc_info[2].lock),
- .dir_mask = SSC_DIR_MASK_UNUSED,
- .initialized = 0,
- },
-#endif
};
@@ -205,7 +161,7 @@ static irqreturn_t atmel_ssc_interrupt(int irq, void *dev_id)
static int atmel_ssc_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
- struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
+ struct atmel_ssc_info *ssc_p = &ssc_info;
int dir_mask;
pr_debug("atmel_ssc_startup: SSC_SR=0x%u\n",
@@ -234,7 +190,7 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream,
static void atmel_ssc_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
- struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
+ struct atmel_ssc_info *ssc_p = &ssc_info;
struct atmel_pcm_dma_params *dma_params;
int dir, dir_mask;
@@ -285,7 +241,7 @@ static void atmel_ssc_shutdown(struct snd_pcm_substream *substream,
static int atmel_ssc_set_dai_fmt(struct snd_soc_dai *cpu_dai,
unsigned int fmt)
{
- struct atmel_ssc_info *ssc_p = &ssc_info[cpu_dai->id];
+ struct atmel_ssc_info *ssc_p = &ssc_info;
ssc_p->daifmt = fmt;
return 0;
@@ -297,7 +253,7 @@ static int atmel_ssc_set_dai_fmt(struct snd_soc_dai *cpu_dai,
static int atmel_ssc_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
int div_id, int div)
{
- struct atmel_ssc_info *ssc_p = &ssc_info[cpu_dai->id];
+ struct atmel_ssc_info *ssc_p = &ssc_info;
switch (div_id) {
case ATMEL_SSC_CMR_DIV:
@@ -336,8 +292,7 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
- int id = dai->id;
- struct atmel_ssc_info *ssc_p = &ssc_info[id];
+ struct atmel_ssc_info *ssc_p = &ssc_info;
struct atmel_pcm_dma_params *dma_params;
int dir, channels, bits;
u32 tfmr, rfmr, tcmr, rcmr;
@@ -354,7 +309,7 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
else
dir = 1;
- dma_params = &ssc_dma_params[id][dir];
+ dma_params = &ssc_dma_params[dir];
dma_params->ssc = ssc_p->ssc;
dma_params->substream = substream;
@@ -603,7 +558,7 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
static int atmel_ssc_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
- struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
+ struct atmel_ssc_info *ssc_p = &ssc_info;
struct atmel_pcm_dma_params *dma_params;
int dir;
@@ -631,7 +586,7 @@ static int atmel_ssc_suspend(struct snd_soc_dai *cpu_dai)
if (!cpu_dai->active)
return 0;
- ssc_p = &ssc_info[cpu_dai->id];
+ ssc_p = &ssc_info;
/* Save the status register before disabling transmit and receive */
ssc_p->ssc_state.ssc_sr = ssc_readl(ssc_p->ssc->regs, SR);
@@ -660,7 +615,7 @@ static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai)
if (!cpu_dai->active)
return 0;
- ssc_p = &ssc_info[cpu_dai->id];
+ ssc_p = &ssc_info;
/* restore SSC register settings */
ssc_writel(ssc_p->ssc->regs, TFMR, ssc_p->ssc_state.ssc_tfmr);
@@ -689,28 +644,10 @@ static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai)
static int atmel_ssc_probe(struct snd_soc_dai *dai)
{
- struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
- int ret = 0;
+ struct atmel_ssc_info *ssc_p = &ssc_info;
snd_soc_dai_set_drvdata(dai, ssc_p);
- /*
- * Request SSC device
- */
- ssc_p->ssc = ssc_request(dai->id);
- if (IS_ERR(ssc_p->ssc)) {
- printk(KERN_ERR "ASoC: Failed to request SSC %d\n", dai->id);
- ret = PTR_ERR(ssc_p->ssc);
- }
-
- return ret;
-}
-
-static int atmel_ssc_remove(struct snd_soc_dai *dai)
-{
- struct atmel_ssc_info *ssc_p = snd_soc_dai_get_drvdata(dai);
-
- ssc_free(ssc_p->ssc);
return 0;
}
@@ -728,11 +665,8 @@ static const struct snd_soc_dai_ops atmel_ssc_dai_ops = {
.set_clkdiv = atmel_ssc_set_dai_clkdiv,
};
-static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = {
- {
- .name = "atmel-ssc-dai.0",
+static struct snd_soc_dai_driver atmel_ssc_dai = {
.probe = atmel_ssc_probe,
- .remove = atmel_ssc_remove,
.suspend = atmel_ssc_suspend,
.resume = atmel_ssc_resume,
.playback = {
@@ -746,118 +680,153 @@ static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = {
.rates = ATMEL_SSC_RATES,
.formats = ATMEL_SSC_FORMATS,},
.ops = &atmel_ssc_dai_ops,
- },
-#if NUM_SSC_DEVICES == 3
- {
- .name = "atmel-ssc-dai.1",
- .probe = atmel_ssc_probe,
- .remove = atmel_ssc_remove,
- .suspend = atmel_ssc_suspend,
- .resume = atmel_ssc_resume,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .rates = ATMEL_SSC_RATES,
- .formats = ATMEL_SSC_FORMATS,},
- .capture = {
- .channels_min = 1,
- .channels_max = 2,
- .rates = ATMEL_SSC_RATES,
- .formats = ATMEL_SSC_FORMATS,},
- .ops = &atmel_ssc_dai_ops,
- },
+};
+
+static struct atmel_ssc_platform_data at91rm9200_config = {
+ .use_dma = 0,
+};
+
+static struct atmel_ssc_platform_data at91sam9g45_config = {
+ .use_dma = 1,
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id atmel_ssc_dai_dt_ids[] = {
{
- .name = "atmel-ssc-dai.2",
- .probe = atmel_ssc_probe,
- .remove = atmel_ssc_remove,
- .suspend = atmel_ssc_suspend,
- .resume = atmel_ssc_resume,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .rates = ATMEL_SSC_RATES,
- .formats = ATMEL_SSC_FORMATS,},
- .capture = {
- .channels_min = 1,
- .channels_max = 2,
- .rates = ATMEL_SSC_RATES,
- .formats = ATMEL_SSC_FORMATS,},
- .ops = &atmel_ssc_dai_ops,
- },
-#endif
+ .compatible = "atmel,at91rm9200-ssc-dai",
+ .data = &at91rm9200_config,
+ }, {
+ .compatible = "atmel,at91sam9g45-ssc-dai",
+ .data = &at91sam9g45_config,
+ }, {
+ /* sentinel */
+ }
};
+MODULE_DEVICE_TABLE(of, atmel_ssc_dai_dt_ids);
+#endif
-static __devinit int asoc_ssc_probe(struct platform_device *pdev)
+static inline const struct atmel_ssc_platform_data * __init
+ atmel_ssc_get_driver_data(struct platform_device *pdev)
{
- BUG_ON(pdev->id < 0);
- BUG_ON(pdev->id >= ARRAY_SIZE(atmel_ssc_dai));
- return snd_soc_register_dai(&pdev->dev, &atmel_ssc_dai[pdev->id]);
-}
+ if (pdev->dev.of_node) {
+ const struct of_device_id *match;
+ match = of_match_node(atmel_ssc_dai_dt_ids,
+ pdev->dev.of_node);
+ if (match == NULL)
+ return NULL;
+ return match->data;
+ }
-static int __devexit asoc_ssc_remove(struct platform_device *pdev)
-{
- snd_soc_unregister_dai(&pdev->dev);
- return 0;
+ return (struct atmel_ssc_platform_data *)
+ platform_get_device_id(pdev)->driver_data;
}
-static struct platform_driver asoc_ssc_driver = {
- .driver = {
- .name = "atmel-ssc-dai",
- .owner = THIS_MODULE,
- },
-
- .probe = asoc_ssc_probe,
- .remove = __devexit_p(asoc_ssc_remove),
-};
-
-/**
- * atmel_ssc_set_audio - Allocate the specified SSC for audio use.
- */
-int atmel_ssc_set_audio(int ssc_id)
+static __devinit int asoc_ssc_probe(struct platform_device *pdev)
{
struct ssc_device *ssc;
- static struct platform_device *dma_pdev;
- struct platform_device *ssc_pdev;
+ struct resource *regs;
+ const struct atmel_ssc_platform_data *pdata;
int ret;
- if (ssc_id < 0 || ssc_id >= ARRAY_SIZE(atmel_ssc_dai))
+ ssc = devm_kzalloc(&pdev->dev, sizeof(ssc), GFP_KERNEL);
+ if (!ssc) {
+ dev_err(&pdev->dev, "out of memory\n");
+ return -ENOMEM;
+ }
+
+ ssc->pdev = pdev;
+
+ pdata = atmel_ssc_get_driver_data(pdev);
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data\n");
+ return -ENODEV;
+ }
+ ssc->pdata = (struct atmel_ssc_platform_data *)pdata;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "no mmio resource defined\n");
+ return -ENXIO;
+ }
+
+ ssc->regs = devm_request_and_ioremap(&pdev->dev, regs);
+ if (!ssc->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
return -EINVAL;
+ }
- /* Allocate a dummy device for DMA if we don't have one already */
- if (!dma_pdev) {
- dma_pdev = platform_device_alloc("atmel-pcm-audio", -1);
- if (!dma_pdev)
- return -ENOMEM;
+ ssc->clk = devm_clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(ssc->clk)) {
+ dev_err(&pdev->dev, "no pclk clock defined\n");
+ return -EINVAL;
+ }
- ret = platform_device_add(dma_pdev);
- if (ret < 0) {
- platform_device_put(dma_pdev);
- dma_pdev = NULL;
- return ret;
- }
+ /* disable all interrupts */
+ clk_enable(ssc->clk);
+ ssc_writel(ssc->regs, IDR, ~0UL);
+ ssc_readl(ssc->regs, SR);
+ clk_disable(ssc->clk);
+
+ ssc->irq = platform_get_irq(pdev, 0);
+ if (!ssc->irq) {
+ dev_err(&pdev->dev, "could not get irq\n");
+ return -ENXIO;
}
- ssc_pdev = platform_device_alloc("atmel-ssc-dai", ssc_id);
- if (!ssc_pdev)
- return -ENOMEM;
+ ssc_info.ssc = ssc;
- /* If we can grab the SSC briefly to parent the DAI device off it */
- ssc = ssc_request(ssc_id);
- if (IS_ERR(ssc))
- pr_warn("Unable to parent ASoC SSC DAI on SSC: %ld\n",
- PTR_ERR(ssc));
- else {
- ssc_pdev->dev.parent = &(ssc->pdev->dev);
- ssc_free(ssc);
+ platform_set_drvdata(pdev, ssc);
+
+ ret = snd_soc_register_dai(&pdev->dev, &atmel_ssc_dai);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
+ goto err_unregister_dai;
}
- ret = platform_device_add(ssc_pdev);
- if (ret < 0)
- platform_device_put(ssc_pdev);
+ ret = atmel_pcm_platform_register(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
+ goto err;
+ };
+
+ return 0;
+err_unregister_dai:
+ snd_soc_unregister_dai(&pdev->dev);
+err:
return ret;
}
-EXPORT_SYMBOL_GPL(atmel_ssc_set_audio);
+
+static int __devexit asoc_ssc_remove(struct platform_device *pdev)
+{
+ atmel_pcm_platform_unregister(&pdev->dev);
+ snd_soc_unregister_dai(&pdev->dev);
+
+ return 0;
+}
+
+static const struct platform_device_id atmel_ssc_dai_devtypes[] = {
+ {
+ .name = "at91rm9200_ssc_dai",
+ .driver_data = (unsigned long) &at91rm9200_config,
+ }, {
+ .name = "at91sam9g45_ssc_dai",
+ .driver_data = (unsigned long) &at91sam9g45_config,
+ }, {
+ /* sentinel */
+ }
+};
+
+static struct platform_driver asoc_ssc_driver = {
+ .driver = {
+ .name = "atmel-ssc-dai",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(atmel_ssc_dai_dt_ids),
+ },
+ .id_table = atmel_ssc_dai_devtypes,
+ .probe = asoc_ssc_probe,
+ .remove = __devexit_p(asoc_ssc_remove),
+};
module_platform_driver(asoc_ssc_driver);
diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
index e5e27db..862cbcc 100644
--- a/sound/soc/atmel/sam9g20_wm8731.c
+++ b/sound/soc/atmel/sam9g20_wm8731.c
@@ -179,10 +179,10 @@ static int at91sam9g20ek_wm8731_init(struct snd_soc_pcm_runtime *rtd)
static struct snd_soc_dai_link at91sam9g20ek_dai = {
.name = "WM8731",
.stream_name = "WM8731 PCM",
- .cpu_dai_name = "atmel-ssc-dai.0",
+ .cpu_dai_name = "at91rm9200_ssc_dai.0",
.codec_dai_name = "wm8731-hifi",
.init = at91sam9g20ek_wm8731_init,
- .platform_name = "atmel-pcm-audio",
+ .platform_name = "at91rm9200_ssc_dai.0",
.codec_name = "wm8731.0-001b",
.ops = &at91sam9g20ek_ops,
};
--
1.7.9.5
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