[deliverable/linux.git] / sound / soc / pxa / imote2.c


#include <linux/module.h>
#include <sound/soc.h>

#include <asm/mach-types.h>

#include "../codecs/wm8940.h"
#include "pxa2xx-i2s.h"

static int imote2_asoc_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;
	unsigned int clk = 0;
	int ret;

	switch (params_rate(params)) {
	case 8000:
	case 16000:
	case 48000:
	case 96000:
		clk = 12288000;
		break;
	case 11025:
	case 22050:
	case 44100:
		clk = 11289600;
		break;
	}

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
				  | SND_SOC_DAIFMT_NB_NF
				  | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* CPU should be clock master */
	ret = snd_soc_dai_set_fmt(cpu_dai,  SND_SOC_DAIFMT_I2S
				  | SND_SOC_DAIFMT_NB_NF
				  | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
				     SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* set the I2S system clock as input (unused) */
	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
		SND_SOC_CLOCK_OUT);

	return ret;
}

static struct snd_soc_ops imote2_asoc_ops = {
	.hw_params = imote2_asoc_hw_params,
};

static struct snd_soc_dai_link imote2_dai = {
	.name = "WM8940",
	.stream_name = "WM8940",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "wm8940-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "wm8940-codec.0-0034",
	.ops = &imote2_asoc_ops,
};

static struct snd_soc_card imote2 = {
	.name = "Imote2",
	.dai_link = &imote2_dai,
	.num_links = 1,
};

static int __devinit imote2_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &imote2;
	int ret;

	card->dev = &pdev->dev;

	ret = snd_soc_register_card(card);
	if (ret)
		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
			ret);
	return ret;
}

static int __devexit imote2_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	snd_soc_unregister_card(card);
	return 0;
}

static struct platform_driver imote2_driver = {
	.driver		= {
		.name	= "imote2-audio",
		.owner	= THIS_MODULE,
	},
	.probe		= imote2_probe,
	.remove		= __devexit_p(imote2_remove),
};

module_platform_driver(imote2_driver);

MODULE_AUTHOR("Jonathan Cameron");
MODULE_DESCRIPTION("ALSA SoC Imote 2");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:imote2-audio");
Commit	Line	Data
a195b51b JC	1
	2	#include <linux/module.h>
	3	#include <sound/soc.h>
	4
	5	#include <asm/mach-types.h>
	6
	7	#include "../codecs/wm8940.h"
	8	#include "pxa2xx-i2s.h"
a195b51b JC	9
	10	static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
	11	struct snd_pcm_hw_params *params)
	12	{
	13	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	14	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	15	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
a195b51b JC	16	unsigned int clk = 0;
	17	int ret;
	18
	19	switch (params_rate(params)) {
	20	case 8000:
	21	case 16000:
	22	case 48000:
	23	case 96000:
	24	clk = 12288000;
	25	break;
	26	case 11025:
	27	case 22050:
	28	case 44100:
	29	clk = 11289600;
	30	break;
	31	}
	32
	33	/* set codec DAI configuration */
	34	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	35	\| SND_SOC_DAIFMT_NB_NF
	36	\| SND_SOC_DAIFMT_CBS_CFS);
	37	if (ret < 0)
	38	return ret;
	39
	40	/* CPU should be clock master */
	41	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	42	\| SND_SOC_DAIFMT_NB_NF
	43	\| SND_SOC_DAIFMT_CBS_CFS);
	44	if (ret < 0)
	45	return ret;
	46
	47	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
	48	SND_SOC_CLOCK_IN);
	49	if (ret < 0)
	50	return ret;
	51
	52	/* set the I2S system clock as input (unused) */
	53	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
	54	SND_SOC_CLOCK_OUT);
	55
	56	return ret;
	57	}
	58
	59	static struct snd_soc_ops imote2_asoc_ops = {
	60	.hw_params = imote2_asoc_hw_params,
	61	};
	62
	63	static struct snd_soc_dai_link imote2_dai = {
	64	.name = "WM8940",
	65	.stream_name = "WM8940",
a2a0086d	66	.cpu_dai_name = "pxa2xx-i2s",
f0fba2ad LG	67	.codec_dai_name = "wm8940-hifi",
	68	.platform_name = "pxa-pcm-audio",
	69	.codec_name = "wm8940-codec.0-0034",
a195b51b JC	70	.ops = &imote2_asoc_ops,
	71	};
	72
ac1e8986	73	static struct snd_soc_card imote2 = {
a195b51b	74	.name = "Imote2",
a195b51b JC	75	.dai_link = &imote2_dai,
	76	.num_links = 1,
	77	};
	78
ac1e8986	79	static int __devinit imote2_probe(struct platform_device *pdev)
a195b51b	80	{
ac1e8986	81	struct snd_soc_card *card = &imote2;
a195b51b JC	82	int ret;
a195b51b JC	83
ac1e8986	84	card->dev = &pdev->dev;
a195b51b	85
ac1e8986	86	ret = snd_soc_register_card(card);
a195b51b	87	if (ret)
ac1e8986 AL	88	dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ac1e8986 AL	89	ret);
a195b51b JC	90	return ret;
a195b51b JC	91	}
a195b51b	92
ac1e8986	93	static int __devexit imote2_remove(struct platform_device *pdev)
a195b51b	94	{
ac1e8986 AL	95	struct snd_soc_card *card = platform_get_drvdata(pdev);
	96
	97	snd_soc_unregister_card(card);
	98	return 0;
a195b51b	99	}
ac1e8986 AL	100
	101	static struct platform_driver imote2_driver = {
	102	.driver = {
	103	.name = "imote2-audio",
	104	.owner = THIS_MODULE,
	105	},
	106	.probe = imote2_probe,
	107	.remove = __devexit_p(imote2_remove),
	108	};
	109
	110	module_platform_driver(imote2_driver);
a195b51b JC	111
	112	MODULE_AUTHOR("Jonathan Cameron");
	113	MODULE_DESCRIPTION("ALSA SoC Imote 2");
	114	MODULE_LICENSE("GPL");
ac1e8986	115	MODULE_ALIAS("platform:imote2-audio");