[deliverable/linux.git] / sound / soc / codecs / jz4740.c

/*
 * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/io.h>

#include <linux/delay.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#define JZ4740_REG_CODEC_1 0x0
#define JZ4740_REG_CODEC_2 0x1

#define JZ4740_CODEC_1_LINE_ENABLE BIT(29)
#define JZ4740_CODEC_1_MIC_ENABLE BIT(28)
#define JZ4740_CODEC_1_SW1_ENABLE BIT(27)
#define JZ4740_CODEC_1_ADC_ENABLE BIT(26)
#define JZ4740_CODEC_1_SW2_ENABLE BIT(25)
#define JZ4740_CODEC_1_DAC_ENABLE BIT(24)
#define JZ4740_CODEC_1_VREF_DISABLE BIT(20)
#define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19)
#define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18)
#define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17)
#define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16)
#define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14)
#define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
#define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12)
#define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) | BIT(10))
#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9)
#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8)
#define JZ4740_CODEC_1_SUSPEND BIT(1)
#define JZ4740_CODEC_1_RESET BIT(0)

#define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29
#define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28
#define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27
#define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26
#define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25
#define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24
#define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8

#define JZ4740_CODEC_2_INPUT_VOLUME_MASK		0x1f0000
#define JZ4740_CODEC_2_SAMPLE_RATE_MASK			0x000f00
#define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK		0x000030
#define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK	0x000003

#define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET		16
#define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET		 8
#define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET	 4
#define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET	 0

static const uint32_t jz4740_codec_regs[] = {
	0x021b2302, 0x00170803,
};

struct jz4740_codec {
	void __iomem *base;
};

static unsigned int jz4740_codec_read(struct snd_soc_codec *codec,
	unsigned int reg)
{
	struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
	return readl(jz4740_codec->base + (reg << 2));
}

static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg,
	unsigned int val)
{
	struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
	u32 *cache = codec->reg_cache;

	cache[reg] = val;
	writel(val, jz4740_codec->base + (reg << 2));

	return 0;
}

static const unsigned int jz4740_mic_tlv[] = {
	TLV_DB_RANGE_HEAD(2),
	0, 2, TLV_DB_SCALE_ITEM(0, 600, 0),
	3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0),
};

static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0);
static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0);

static const struct snd_kcontrol_new jz4740_codec_controls[] = {
	SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2,
			JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0,
			jz4740_out_tlv),
	SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2,
			JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0,
			jz4740_in_tlv),
	SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
	SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2,
			JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0,
			jz4740_mic_tlv),
};

static const struct snd_kcontrol_new jz4740_codec_output_controls[] = {
	SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
	SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
};

static const struct snd_kcontrol_new jz4740_codec_input_controls[] = {
	SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
	SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
};

static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = {
	SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0),
	SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0),

	SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1,
			jz4740_codec_output_controls,
			ARRAY_SIZE(jz4740_codec_output_controls)),

	SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
			jz4740_codec_input_controls,
			ARRAY_SIZE(jz4740_codec_input_controls)),
	SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),

	SND_SOC_DAPM_OUTPUT("LOUT"),
	SND_SOC_DAPM_OUTPUT("ROUT"),

	SND_SOC_DAPM_INPUT("MIC"),
	SND_SOC_DAPM_INPUT("LIN"),
	SND_SOC_DAPM_INPUT("RIN"),
};

static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = {
	{"Line Input", NULL, "LIN"},
	{"Line Input", NULL, "RIN"},

	{"Input Mixer", "Line Capture Switch", "Line Input"},
	{"Input Mixer", "Mic Capture Switch", "MIC"},

	{"ADC", NULL, "Input Mixer"},

	{"Output Mixer", "Bypass Switch", "Input Mixer"},
	{"Output Mixer", "DAC Switch", "DAC"},

	{"LOUT", NULL, "Output Mixer"},
	{"ROUT", NULL, "Output Mixer"},
};

static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
	uint32_t val;
	struct snd_soc_codec *codec = dai->codec;

	switch (params_rate(params)) {
	case 8000:
		val = 0;
		break;
	case 11025:
		val = 1;
		break;
	case 12000:
		val = 2;
		break;
	case 16000:
		val = 3;
		break;
	case 22050:
		val = 4;
		break;
	case 24000:
		val = 5;
		break;
	case 32000:
		val = 6;
		break;
	case 44100:
		val = 7;
		break;
	case 48000:
		val = 8;
		break;
	default:
		return -EINVAL;
	}

	val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET;

	snd_soc_update_bits(codec, JZ4740_REG_CODEC_2,
				JZ4740_CODEC_2_SAMPLE_RATE_MASK, val);

	return 0;
}

static const struct snd_soc_dai_ops jz4740_codec_dai_ops = {
	.hw_params = jz4740_codec_hw_params,
};

static struct snd_soc_dai_driver jz4740_codec_dai = {
	.name = "jz4740-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
	},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
	},
	.ops = &jz4740_codec_dai_ops,
	.symmetric_rates = 1,
};

static void jz4740_codec_wakeup(struct snd_soc_codec *codec)
{
	int i;
	uint32_t *cache = codec->reg_cache;

	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
		JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET);
	udelay(2);

	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
		JZ4740_CODEC_1_SUSPEND | JZ4740_CODEC_1_RESET, 0);

	for (i = 0; i < ARRAY_SIZE(jz4740_codec_regs); ++i)
		jz4740_codec_write(codec, i, cache[i]);
}

static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec,
	enum snd_soc_bias_level level)
{
	unsigned int mask;
	unsigned int value;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		mask = JZ4740_CODEC_1_VREF_DISABLE |
				JZ4740_CODEC_1_VREF_AMP_DISABLE |
				JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
		value = 0;

		snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
		break;
	case SND_SOC_BIAS_STANDBY:
		/* The only way to clear the suspend flag is to reset the codec */
		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
			jz4740_codec_wakeup(codec);

		mask = JZ4740_CODEC_1_VREF_DISABLE |
			JZ4740_CODEC_1_VREF_AMP_DISABLE |
			JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
		value = JZ4740_CODEC_1_VREF_DISABLE |
			JZ4740_CODEC_1_VREF_AMP_DISABLE |
			JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;

		snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
		break;
	case SND_SOC_BIAS_OFF:
		mask = JZ4740_CODEC_1_SUSPEND;
		value = JZ4740_CODEC_1_SUSPEND;

		snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
		break;
	default:
		break;
	}

	codec->dapm.bias_level = level;

	return 0;
}

static int jz4740_codec_dev_probe(struct snd_soc_codec *codec)
{
	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
			JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);

	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}

static int jz4740_codec_dev_remove(struct snd_soc_codec *codec)
{
	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

#ifdef CONFIG_PM_SLEEP

static int jz4740_codec_suspend(struct snd_soc_codec *codec)
{
	return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
}

static int jz4740_codec_resume(struct snd_soc_codec *codec)
{
	return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
}

#else
#define jz4740_codec_suspend NULL
#define jz4740_codec_resume NULL
#endif

static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
	.probe = jz4740_codec_dev_probe,
	.remove = jz4740_codec_dev_remove,
	.suspend = jz4740_codec_suspend,
	.resume = jz4740_codec_resume,
	.read = jz4740_codec_read,
	.write = jz4740_codec_write,
	.set_bias_level = jz4740_codec_set_bias_level,
	.reg_cache_default	= jz4740_codec_regs,
	.reg_word_size = sizeof(u32),
	.reg_cache_size	= 2,

	.controls = jz4740_codec_controls,
	.num_controls = ARRAY_SIZE(jz4740_codec_controls),
	.dapm_widgets = jz4740_codec_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets),
	.dapm_routes = jz4740_codec_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes),
};

static int __devinit jz4740_codec_probe(struct platform_device *pdev)
{
	int ret;
	struct jz4740_codec *jz4740_codec;
	struct resource *mem;

	jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec),
				    GFP_KERNEL);
	if (!jz4740_codec)
		return -ENOMEM;

	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	jz4740_codec->base = devm_request_and_ioremap(&pdev->dev, mem);
	if (!jz4740_codec->base)
		return -EBUSY;

	platform_set_drvdata(pdev, jz4740_codec);

	ret = snd_soc_register_codec(&pdev->dev,
			&soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
	if (ret)
		dev_err(&pdev->dev, "Failed to register codec\n");

	return ret;
}

static int __devexit jz4740_codec_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);

	platform_set_drvdata(pdev, NULL);

	return 0;
}

static struct platform_driver jz4740_codec_driver = {
	.probe = jz4740_codec_probe,
	.remove = __devexit_p(jz4740_codec_remove),
	.driver = {
		.name = "jz4740-codec",
		.owner = THIS_MODULE,
	},
};

module_platform_driver(jz4740_codec_driver);

MODULE_DESCRIPTION("JZ4740 SoC internal codec driver");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:jz4740-codec");
Commit	Line	Data
3b097d64 LPC	1	/*
	2	* Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* You should have received a copy of the GNU General Public License along
	9	* with this program; if not, write to the Free Software Foundation, Inc.,
	10	* 675 Mass Ave, Cambridge, MA 02139, USA.
	11	*
	12	*/
	13
	14	#include <linux/kernel.h>
	15	#include <linux/module.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/slab.h>
68bfcafa	18	#include <linux/io.h>
3b097d64 LPC	19
	20	#include <linux/delay.h>
	21
	22	#include <sound/core.h>
	23	#include <sound/pcm.h>
	24	#include <sound/pcm_params.h>
	25	#include <sound/initval.h>
3b097d64	26	#include <sound/soc.h>
a484a9a3	27	#include <sound/tlv.h>
3b097d64 LPC	28
	29	#define JZ4740_REG_CODEC_1 0x0
	30	#define JZ4740_REG_CODEC_2 0x1
	31
	32	#define JZ4740_CODEC_1_LINE_ENABLE BIT(29)
	33	#define JZ4740_CODEC_1_MIC_ENABLE BIT(28)
	34	#define JZ4740_CODEC_1_SW1_ENABLE BIT(27)
	35	#define JZ4740_CODEC_1_ADC_ENABLE BIT(26)
	36	#define JZ4740_CODEC_1_SW2_ENABLE BIT(25)
	37	#define JZ4740_CODEC_1_DAC_ENABLE BIT(24)
	38	#define JZ4740_CODEC_1_VREF_DISABLE BIT(20)
	39	#define JZ4740_CODEC_1_VREF_AMP_DISABLE BIT(19)
	40	#define JZ4740_CODEC_1_VREF_PULLDOWN BIT(18)
	41	#define JZ4740_CODEC_1_VREF_LOW_CURRENT BIT(17)
	42	#define JZ4740_CODEC_1_VREF_HIGH_CURRENT BIT(16)
	43	#define JZ4740_CODEC_1_HEADPHONE_DISABLE BIT(14)
	44	#define JZ4740_CODEC_1_HEADPHONE_AMP_CHANGE_ANY BIT(13)
	45	#define JZ4740_CODEC_1_HEADPHONE_CHARGE BIT(12)
	46	#define JZ4740_CODEC_1_HEADPHONE_PULLDOWN (BIT(11) \| BIT(10))
	47	#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M BIT(9)
	48	#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN BIT(8)
	49	#define JZ4740_CODEC_1_SUSPEND BIT(1)
	50	#define JZ4740_CODEC_1_RESET BIT(0)
	51
	52	#define JZ4740_CODEC_1_LINE_ENABLE_OFFSET 29
	53	#define JZ4740_CODEC_1_MIC_ENABLE_OFFSET 28
	54	#define JZ4740_CODEC_1_SW1_ENABLE_OFFSET 27
	55	#define JZ4740_CODEC_1_ADC_ENABLE_OFFSET 26
	56	#define JZ4740_CODEC_1_SW2_ENABLE_OFFSET 25
	57	#define JZ4740_CODEC_1_DAC_ENABLE_OFFSET 24
	58	#define JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET 14
	59	#define JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET 8
	60
	61	#define JZ4740_CODEC_2_INPUT_VOLUME_MASK 0x1f0000
	62	#define JZ4740_CODEC_2_SAMPLE_RATE_MASK 0x000f00
	63	#define JZ4740_CODEC_2_MIC_BOOST_GAIN_MASK 0x000030
	64	#define JZ4740_CODEC_2_HEADPHONE_VOLUME_MASK 0x000003
	65
	66	#define JZ4740_CODEC_2_INPUT_VOLUME_OFFSET 16
	67	#define JZ4740_CODEC_2_SAMPLE_RATE_OFFSET 8
	68	#define JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET 4
	69	#define JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET 0
	70
	71	static const uint32_t jz4740_codec_regs[] = {
	72	0x021b2302, 0x00170803,
	73	};
	74
	75	struct jz4740_codec {
	76	void __iomem *base;
3b097d64 LPC	77	};
3b097d64 LPC	78
3b097d64 LPC	79	static unsigned int jz4740_codec_read(struct snd_soc_codec *codec,
	80	unsigned int reg)
	81	{
f0fba2ad	82	struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
3b097d64 LPC	83	return readl(jz4740_codec->base + (reg << 2));
	84	}
	85
	86	static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg,
	87	unsigned int val)
	88	{
f0fba2ad LG	89	struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
f0fba2ad LG	90	u32 *cache = codec->reg_cache;
3b097d64	91
f0fba2ad	92	cache[reg] = val;
3b097d64 LPC	93	writel(val, jz4740_codec->base + (reg << 2));
	94
	95	return 0;
	96	}
	97
a484a9a3 LPC	98	static const unsigned int jz4740_mic_tlv[] = {
	99	TLV_DB_RANGE_HEAD(2),
	100	0, 2, TLV_DB_SCALE_ITEM(0, 600, 0),
	101	3, 3, TLV_DB_SCALE_ITEM(2000, 0, 0),
	102	};
	103
	104	static const DECLARE_TLV_DB_SCALE(jz4740_out_tlv, 0, 200, 0);
	105	static const DECLARE_TLV_DB_SCALE(jz4740_in_tlv, -3450, 150, 0);
	106
3b097d64	107	static const struct snd_kcontrol_new jz4740_codec_controls[] = {
a484a9a3 LPC	108	SOC_SINGLE_TLV("Master Playback Volume", JZ4740_REG_CODEC_2,
	109	JZ4740_CODEC_2_HEADPHONE_VOLUME_OFFSET, 3, 0,
	110	jz4740_out_tlv),
	111	SOC_SINGLE_TLV("Master Capture Volume", JZ4740_REG_CODEC_2,
	112	JZ4740_CODEC_2_INPUT_VOLUME_OFFSET, 31, 0,
	113	jz4740_in_tlv),
3b097d64 LPC	114	SOC_SINGLE("Master Playback Switch", JZ4740_REG_CODEC_1,
3b097d64 LPC	115	JZ4740_CODEC_1_HEADPHONE_DISABLE_OFFSET, 1, 1),
a484a9a3 LPC	116	SOC_SINGLE_TLV("Mic Capture Volume", JZ4740_REG_CODEC_2,
	117	JZ4740_CODEC_2_MIC_BOOST_GAIN_OFFSET, 3, 0,
	118	jz4740_mic_tlv),
3b097d64 LPC	119	};
	120
	121	static const struct snd_kcontrol_new jz4740_codec_output_controls[] = {
	122	SOC_DAPM_SINGLE("Bypass Switch", JZ4740_REG_CODEC_1,
	123	JZ4740_CODEC_1_SW1_ENABLE_OFFSET, 1, 0),
	124	SOC_DAPM_SINGLE("DAC Switch", JZ4740_REG_CODEC_1,
	125	JZ4740_CODEC_1_SW2_ENABLE_OFFSET, 1, 0),
	126	};
	127
	128	static const struct snd_kcontrol_new jz4740_codec_input_controls[] = {
	129	SOC_DAPM_SINGLE("Line Capture Switch", JZ4740_REG_CODEC_1,
	130	JZ4740_CODEC_1_LINE_ENABLE_OFFSET, 1, 0),
	131	SOC_DAPM_SINGLE("Mic Capture Switch", JZ4740_REG_CODEC_1,
	132	JZ4740_CODEC_1_MIC_ENABLE_OFFSET, 1, 0),
	133	};
	134
	135	static const struct snd_soc_dapm_widget jz4740_codec_dapm_widgets[] = {
	136	SND_SOC_DAPM_ADC("ADC", "Capture", JZ4740_REG_CODEC_1,
	137	JZ4740_CODEC_1_ADC_ENABLE_OFFSET, 0),
	138	SND_SOC_DAPM_DAC("DAC", "Playback", JZ4740_REG_CODEC_1,
	139	JZ4740_CODEC_1_DAC_ENABLE_OFFSET, 0),
	140
	141	SND_SOC_DAPM_MIXER("Output Mixer", JZ4740_REG_CODEC_1,
	142	JZ4740_CODEC_1_HEADPHONE_POWERDOWN_OFFSET, 1,
	143	jz4740_codec_output_controls,
	144	ARRAY_SIZE(jz4740_codec_output_controls)),
	145
	146	SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
	147	jz4740_codec_input_controls,
	148	ARRAY_SIZE(jz4740_codec_input_controls)),
	149	SND_SOC_DAPM_MIXER("Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
	150
	151	SND_SOC_DAPM_OUTPUT("LOUT"),
	152	SND_SOC_DAPM_OUTPUT("ROUT"),
	153
	154	SND_SOC_DAPM_INPUT("MIC"),
	155	SND_SOC_DAPM_INPUT("LIN"),
	156	SND_SOC_DAPM_INPUT("RIN"),
	157	};
	158
	159	static const struct snd_soc_dapm_route jz4740_codec_dapm_routes[] = {
	160	{"Line Input", NULL, "LIN"},
	161	{"Line Input", NULL, "RIN"},
	162
	163	{"Input Mixer", "Line Capture Switch", "Line Input"},
	164	{"Input Mixer", "Mic Capture Switch", "MIC"},
	165
	166	{"ADC", NULL, "Input Mixer"},
	167
	168	{"Output Mixer", "Bypass Switch", "Input Mixer"},
	169	{"Output Mixer", "DAC Switch", "DAC"},
	170
	171	{"LOUT", NULL, "Output Mixer"},
	172	{"ROUT", NULL, "Output Mixer"},
	173	};
	174
	175	static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
	176	struct snd_pcm_hw_params params, struct snd_soc_dai dai)
	177	{
	178	uint32_t val;
e6968a17	179	struct snd_soc_codec *codec = dai->codec;
3b097d64 LPC	180
	181	switch (params_rate(params)) {
	182	case 8000:
	183	val = 0;
	184	break;
	185	case 11025:
	186	val = 1;
	187	break;
	188	case 12000:
	189	val = 2;
	190	break;
	191	case 16000:
	192	val = 3;
	193	break;
	194	case 22050:
	195	val = 4;
	196	break;
	197	case 24000:
	198	val = 5;
	199	break;
	200	case 32000:
	201	val = 6;
	202	break;
	203	case 44100:
	204	val = 7;
	205	break;
	206	case 48000:
	207	val = 8;
	208	break;
	209	default:
	210	return -EINVAL;
	211	}
	212
	213	val <<= JZ4740_CODEC_2_SAMPLE_RATE_OFFSET;
	214
	215	snd_soc_update_bits(codec, JZ4740_REG_CODEC_2,
	216	JZ4740_CODEC_2_SAMPLE_RATE_MASK, val);
	217
	218	return 0;
	219	}
	220
85e7652d	221	static const struct snd_soc_dai_ops jz4740_codec_dai_ops = {
3b097d64 LPC	222	.hw_params = jz4740_codec_hw_params,
	223	};
	224
f0fba2ad LG	225	static struct snd_soc_dai_driver jz4740_codec_dai = {
f0fba2ad LG	226	.name = "jz4740-hifi",
3b097d64 LPC	227	.playback = {
	228	.stream_name = "Playback",
	229	.channels_min = 2,
	230	.channels_max = 2,
	231	.rates = SNDRV_PCM_RATE_8000_48000,
	232	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S8,
	233	},
	234	.capture = {
	235	.stream_name = "Capture",
	236	.channels_min = 2,
	237	.channels_max = 2,
	238	.rates = SNDRV_PCM_RATE_8000_48000,
	239	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S8,
	240	},
	241	.ops = &jz4740_codec_dai_ops,
	242	.symmetric_rates = 1,
	243	};
3b097d64 LPC	244
	245	static void jz4740_codec_wakeup(struct snd_soc_codec *codec)
	246	{
	247	int i;
	248	uint32_t *cache = codec->reg_cache;
	249
	250	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
	251	JZ4740_CODEC_1_RESET, JZ4740_CODEC_1_RESET);
	252	udelay(2);
	253
	254	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
	255	JZ4740_CODEC_1_SUSPEND \| JZ4740_CODEC_1_RESET, 0);
	256
	257	for (i = 0; i < ARRAY_SIZE(jz4740_codec_regs); ++i)
	258	jz4740_codec_write(codec, i, cache[i]);
	259	}
	260
	261	static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec,
	262	enum snd_soc_bias_level level)
	263	{
	264	unsigned int mask;
	265	unsigned int value;
	266
	267	switch (level) {
	268	case SND_SOC_BIAS_ON:
	269	break;
	270	case SND_SOC_BIAS_PREPARE:
	271	mask = JZ4740_CODEC_1_VREF_DISABLE \|
	272	JZ4740_CODEC_1_VREF_AMP_DISABLE \|
	273	JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
	274	value = 0;
	275
	276	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
	277	break;
	278	case SND_SOC_BIAS_STANDBY:
	279	/* The only way to clear the suspend flag is to reset the codec */
ce6120cc	280	if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
3b097d64 LPC	281	jz4740_codec_wakeup(codec);
	282
	283	mask = JZ4740_CODEC_1_VREF_DISABLE \|
	284	JZ4740_CODEC_1_VREF_AMP_DISABLE \|
	285	JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
	286	value = JZ4740_CODEC_1_VREF_DISABLE \|
	287	JZ4740_CODEC_1_VREF_AMP_DISABLE \|
	288	JZ4740_CODEC_1_HEADPHONE_POWERDOWN_M;
	289
	290	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
	291	break;
	292	case SND_SOC_BIAS_OFF:
	293	mask = JZ4740_CODEC_1_SUSPEND;
	294	value = JZ4740_CODEC_1_SUSPEND;
	295
	296	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1, mask, value);
	297	break;
	298	default:
	299	break;
	300	}
	301
ce6120cc	302	codec->dapm.bias_level = level;
3b097d64 LPC	303
	304	return 0;
	305	}
	306
f0fba2ad	307	static int jz4740_codec_dev_probe(struct snd_soc_codec *codec)
3b097d64	308	{
f0fba2ad LG	309	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
f0fba2ad LG	310	JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
3b097d64	311
f0fba2ad LG	312	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
f0fba2ad LG	313
3b097d64 LPC	314	return 0;
	315	}
	316
f0fba2ad	317	static int jz4740_codec_dev_remove(struct snd_soc_codec *codec)
3b097d64	318	{
f0fba2ad	319	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
3b097d64 LPC	320
	321	return 0;
	322	}
	323
	324	#ifdef CONFIG_PM_SLEEP
	325
84b315ee	326	static int jz4740_codec_suspend(struct snd_soc_codec *codec)
3b097d64	327	{
3b097d64 LPC	328	return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
	329	}
	330
f0fba2ad	331	static int jz4740_codec_resume(struct snd_soc_codec *codec)
3b097d64	332	{
3b097d64 LPC	333	return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	334	}
	335
	336	#else
	337	#define jz4740_codec_suspend NULL
	338	#define jz4740_codec_resume NULL
	339	#endif
	340
f0fba2ad	341	static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
3b097d64 LPC	342	.probe = jz4740_codec_dev_probe,
	343	.remove = jz4740_codec_dev_remove,
	344	.suspend = jz4740_codec_suspend,
	345	.resume = jz4740_codec_resume,
f0fba2ad LG	346	.read = jz4740_codec_read,
	347	.write = jz4740_codec_write,
	348	.set_bias_level = jz4740_codec_set_bias_level,
	349	.reg_cache_default = jz4740_codec_regs,
	350	.reg_word_size = sizeof(u32),
	351	.reg_cache_size = 2,
67447912 LPC	352
	353	.controls = jz4740_codec_controls,
	354	.num_controls = ARRAY_SIZE(jz4740_codec_controls),
	355	.dapm_widgets = jz4740_codec_dapm_widgets,
	356	.num_dapm_widgets = ARRAY_SIZE(jz4740_codec_dapm_widgets),
	357	.dapm_routes = jz4740_codec_dapm_routes,
	358	.num_dapm_routes = ARRAY_SIZE(jz4740_codec_dapm_routes),
3b097d64	359	};
3b097d64 LPC	360
	361	static int __devinit jz4740_codec_probe(struct platform_device *pdev)
	362	{
	363	int ret;
	364	struct jz4740_codec *jz4740_codec;
3b097d64 LPC	365	struct resource *mem;
3b097d64 LPC	366
558460c6 AL	367	jz4740_codec = devm_kzalloc(&pdev->dev, sizeof(*jz4740_codec),
558460c6 AL	368	GFP_KERNEL);
3b097d64 LPC	369	if (!jz4740_codec)
	370	return -ENOMEM;
	371
	372	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
355d74b5 LPC	373	jz4740_codec->base = devm_request_and_ioremap(&pdev->dev, mem);
	374	if (!jz4740_codec->base)
	375	return -EBUSY;
3b097d64	376
3b097d64 LPC	377	platform_set_drvdata(pdev, jz4740_codec);
3b097d64 LPC	378
f0fba2ad LG	379	ret = snd_soc_register_codec(&pdev->dev,
f0fba2ad LG	380	&soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
355d74b5	381	if (ret)
3b097d64	382	dev_err(&pdev->dev, "Failed to register codec\n");
3b097d64	383
3b097d64 LPC	384	return ret;
	385	}
	386
	387	static int __devexit jz4740_codec_remove(struct platform_device *pdev)
	388	{
f0fba2ad	389	snd_soc_unregister_codec(&pdev->dev);
3b097d64	390
3b097d64	391	platform_set_drvdata(pdev, NULL);
3b097d64 LPC	392
	393	return 0;
	394	}
	395
	396	static struct platform_driver jz4740_codec_driver = {
	397	.probe = jz4740_codec_probe,
	398	.remove = __devexit_p(jz4740_codec_remove),
	399	.driver = {
	400	.name = "jz4740-codec",
	401	.owner = THIS_MODULE,
	402	},
	403	};
	404
5bbcc3c0	405	module_platform_driver(jz4740_codec_driver);
3b097d64 LPC	406
	407	MODULE_DESCRIPTION("JZ4740 SoC internal codec driver");
	408	MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
	409	MODULE_LICENSE("GPL v2");
	410	MODULE_ALIAS("platform:jz4740-codec");