[linux-block.git] / sound / soc / pxa / imote2.c

// SPDX-License-Identifier: GPL-2.0-only

#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;
	}

	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 const 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",
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
	.ops = &imote2_asoc_ops,
};

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

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

	card->dev = &pdev->dev;

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

static struct platform_driver imote2_driver = {
	.driver		= {
		.name	= "imote2-audio",
		.pm     = &snd_soc_pm_ops,
	},
	.probe		= imote2_probe,
};

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
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
a195b51b JC	2
	3	#include <linux/module.h>
	4	#include <sound/soc.h>
	5
	6	#include <asm/mach-types.h>
	7
	8	#include "../codecs/wm8940.h"
	9	#include "pxa2xx-i2s.h"
a195b51b JC	10
	11	static int imote2_asoc_hw_params(struct snd_pcm_substream *substream,
	12	struct snd_pcm_hw_params *params)
	13	{
	14	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	15	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	16	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
a195b51b JC	17	unsigned int clk = 0;
	18	int ret;
	19
	20	switch (params_rate(params)) {
	21	case 8000:
	22	case 16000:
	23	case 48000:
	24	case 96000:
	25	clk = 12288000;
	26	break;
	27	case 11025:
	28	case 22050:
	29	case 44100:
	30	clk = 11289600;
	31	break;
	32	}
	33
a195b51b JC	34	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
	35	SND_SOC_CLOCK_IN);
	36	if (ret < 0)
	37	return ret;
	38
	39	/* set the I2S system clock as input (unused) */
	40	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, clk,
	41	SND_SOC_CLOCK_OUT);
	42
	43	return ret;
	44	}
	45
943b7311	46	static const struct snd_soc_ops imote2_asoc_ops = {
a195b51b JC	47	.hw_params = imote2_asoc_hw_params,
	48	};
	49
	50	static struct snd_soc_dai_link imote2_dai = {
	51	.name = "WM8940",
	52	.stream_name = "WM8940",
a2a0086d	53	.cpu_dai_name = "pxa2xx-i2s",
f0fba2ad LG	54	.codec_dai_name = "wm8940-hifi",
	55	.platform_name = "pxa-pcm-audio",
	56	.codec_name = "wm8940-codec.0-0034",
52ec35f6 AL	57	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
52ec35f6 AL	58	SND_SOC_DAIFMT_CBS_CFS,
a195b51b JC	59	.ops = &imote2_asoc_ops,
	60	};
	61
ac1e8986	62	static struct snd_soc_card imote2 = {
a195b51b	63	.name = "Imote2",
561c6a17	64	.owner = THIS_MODULE,
a195b51b JC	65	.dai_link = &imote2_dai,
	66	.num_links = 1,
	67	};
	68
570f6fe1	69	static int imote2_probe(struct platform_device *pdev)
a195b51b	70	{
ac1e8986	71	struct snd_soc_card *card = &imote2;
a195b51b JC	72	int ret;
a195b51b JC	73
ac1e8986	74	card->dev = &pdev->dev;
a195b51b	75
2fd7076a	76	ret = devm_snd_soc_register_card(&pdev->dev, card);
a195b51b	77	if (ret)
ac1e8986 AL	78	dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ac1e8986 AL	79	ret);
a195b51b JC	80	return ret;
a195b51b JC	81	}
a195b51b	82
ac1e8986 AL	83	static struct platform_driver imote2_driver = {
	84	.driver = {
	85	.name = "imote2-audio",
7db1698f	86	.pm = &snd_soc_pm_ops,
ac1e8986 AL	87	},
ac1e8986 AL	88	.probe = imote2_probe,
ac1e8986 AL	89	};
	90
	91	module_platform_driver(imote2_driver);
a195b51b JC	92
	93	MODULE_AUTHOR("Jonathan Cameron");
	94	MODULE_DESCRIPTION("ALSA SoC Imote 2");
	95	MODULE_LICENSE("GPL");
ac1e8986	96	MODULE_ALIAS("platform:imote2-audio");