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

/*
 * raumfeld_audio.c  --  SoC audio for Raumfeld audio devices
 *
 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
 *
 * based on code from:
 *
 *    Wolfson Microelectronics PLC.
 *    Openedhand Ltd.
 *    Liam Girdwood <lrg@slimlogic.co.uk>
 *    Richard Purdie <richard@openedhand.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include <asm/mach-types.h>

#include "pxa-ssp.h"

#define GPIO_SPDIF_RESET	(38)
#define GPIO_MCLK_RESET		(111)
#define GPIO_CODEC_RESET	(120)

static struct i2c_client *max9486_client;
static struct i2c_board_info max9486_hwmon_info = {
	I2C_BOARD_INFO("max9485", 0x63),
};

#define MAX9485_MCLK_FREQ_112896 0x22
#define MAX9485_MCLK_FREQ_122880 0x23
#define MAX9485_MCLK_FREQ_225792 0x32
#define MAX9485_MCLK_FREQ_245760 0x33

static void set_max9485_clk(char clk)
{
	i2c_master_send(max9486_client, &clk, 1);
}

static void raumfeld_enable_audio(bool en)
{
	if (en) {
		gpio_set_value(GPIO_MCLK_RESET, 1);

		/* wait some time to let the clocks become stable */
		msleep(100);

		gpio_set_value(GPIO_SPDIF_RESET, 1);
		gpio_set_value(GPIO_CODEC_RESET, 1);
	} else {
		gpio_set_value(GPIO_MCLK_RESET, 0);
		gpio_set_value(GPIO_SPDIF_RESET, 0);
		gpio_set_value(GPIO_CODEC_RESET, 0);
	}
}

/* CS4270 */
static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;

	/* set freq to 0 to enable all possible codec sample rates */
	return snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
}

static void raumfeld_cs4270_shutdown(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;

	/* set freq to 0 to enable all possible codec sample rates */
	snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
}

static int raumfeld_cs4270_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 fmt, clk = 0;
	int ret = 0;

	switch (params_rate(params)) {
	case 44100:
		set_max9485_clk(MAX9485_MCLK_FREQ_112896);
		clk = 11289600;
		break;
	case 48000:
		set_max9485_clk(MAX9485_MCLK_FREQ_122880);
		clk = 12288000;
		break;
	case 88200:
		set_max9485_clk(MAX9485_MCLK_FREQ_225792);
		clk = 22579200;
		break;
	case 96000:
		set_max9485_clk(MAX9485_MCLK_FREQ_245760);
		clk = 24576000;
		break;
	default:
		return -EINVAL;
	}

	fmt = SND_SOC_DAIFMT_I2S |
	      SND_SOC_DAIFMT_NB_NF |
	      SND_SOC_DAIFMT_CBS_CFS;

	/* setup the CODEC DAI */
	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
	if (ret < 0)
		return ret;

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

	/* setup the CPU DAI */
	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops raumfeld_cs4270_ops = {
	.startup = raumfeld_cs4270_startup,
	.shutdown = raumfeld_cs4270_shutdown,
	.hw_params = raumfeld_cs4270_hw_params,
};

static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
{
	raumfeld_enable_audio(false);
	return 0;
}

static int raumfeld_line_resume(struct platform_device *pdev)
{
	raumfeld_enable_audio(true);
	return 0;
}

/* AK4104 */

static int raumfeld_ak4104_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;
	int fmt, ret = 0, clk = 0;

	switch (params_rate(params)) {
	case 44100:
		set_max9485_clk(MAX9485_MCLK_FREQ_112896);
		clk = 11289600;
		break;
	case 48000:
		set_max9485_clk(MAX9485_MCLK_FREQ_122880);
		clk = 12288000;
		break;
	case 88200:
		set_max9485_clk(MAX9485_MCLK_FREQ_225792);
		clk = 22579200;
		break;
	case 96000:
		set_max9485_clk(MAX9485_MCLK_FREQ_245760);
		clk = 24576000;
		break;
	default:
		return -EINVAL;
	}

	fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;

	/* setup the CODEC DAI */
	ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* setup the CPU DAI */
	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops raumfeld_ak4104_ops = {
	.hw_params = raumfeld_ak4104_hw_params,
};

static struct snd_soc_dai_link raumfeld_dai[] = {
{
	.name		= "ak4104",
	.stream_name	= "Playback",
	.cpu_dai_name = "pxa-ssp-dai.1",
	.codec_dai_name = "ak4104-hifi",
	.platform_name = "pxa-pcm-audio",
	.ops		= &raumfeld_ak4104_ops,
	.codec_name = "ak4104-codec.0",
},
{
	.name		= "CS4270",
	.stream_name	= "CS4270",
	.cpu_dai_name = "pxa-ssp-dai.0",
	.platform_name = "pxa-pcm-audio",
	.codec_dai_name = "cs4270-hifi",
	.codec_name = "cs4270-codec.0-0048",
	.ops		= &raumfeld_cs4270_ops,
},};

static struct snd_soc_card snd_soc_raumfeld = {
	.name		= "Raumfeld",
	.dai_link	= raumfeld_dai,
	.suspend_post	= raumfeld_line_suspend,
	.resume_pre	= raumfeld_line_resume,
	.num_links	= ARRAY_SIZE(raumfeld_dai),
};

static struct platform_device *raumfeld_audio_device;

static int __init raumfeld_audio_init(void)
{
	int ret;

	if (!machine_is_raumfeld_speaker() &&
	    !machine_is_raumfeld_connector())
		return 0;

	max9486_client = i2c_new_device(i2c_get_adapter(0),
					&max9486_hwmon_info);

	if (!max9486_client)
		return -ENOMEM;

	set_max9485_clk(MAX9485_MCLK_FREQ_122880);

	/* Register LINE and SPDIF */
	raumfeld_audio_device = platform_device_alloc("soc-audio", 0);
	if (!raumfeld_audio_device)
		return -ENOMEM;

	platform_set_drvdata(raumfeld_audio_device,
			     &snd_soc_raumfeld);
	ret = platform_device_add(raumfeld_audio_device);

	/* no S/PDIF on Speakers */
	if (machine_is_raumfeld_speaker())
		return ret;

	raumfeld_enable_audio(true);

	return ret;
}

static void __exit raumfeld_audio_exit(void)
{
	raumfeld_enable_audio(false);

	platform_device_unregister(raumfeld_audio_device);

	i2c_unregister_device(max9486_client);

	gpio_free(GPIO_MCLK_RESET);
	gpio_free(GPIO_CODEC_RESET);
	gpio_free(GPIO_SPDIF_RESET);
}

module_init(raumfeld_audio_init);
module_exit(raumfeld_audio_exit);

/* Module information */
MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
MODULE_DESCRIPTION("Raumfeld audio SoC");
MODULE_LICENSE("GPL");
Commit	Line	Data
49af574b DM	1	/*
	2	* raumfeld_audio.c -- SoC audio for Raumfeld audio devices
	3	*
	4	* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
	5	*
	6	* based on code from:
	7	*
	8	* Wolfson Microelectronics PLC.
	9	* Openedhand Ltd.
	10	* Liam Girdwood <lrg@slimlogic.co.uk>
	11	* Richard Purdie <richard@openedhand.com>
	12	*
	13	* This program is free software; you can redistribute it and/or modify it
	14	* under the terms of the GNU General Public License as published by the
	15	* Free Software Foundation; either version 2 of the License, or (at your
	16	* option) any later version.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/i2c.h>
	21	#include <linux/delay.h>
	22	#include <linux/gpio.h>
	23	#include <sound/pcm.h>
	24	#include <sound/soc.h>
	25	#include <sound/soc-dapm.h>
	26
	27	#include <asm/mach-types.h>
	28
49af574b DM	29	#include "pxa-ssp.h"
	30
	31	#define GPIO_SPDIF_RESET (38)
	32	#define GPIO_MCLK_RESET (111)
	33	#define GPIO_CODEC_RESET (120)
	34
	35	static struct i2c_client *max9486_client;
	36	static struct i2c_board_info max9486_hwmon_info = {
	37	I2C_BOARD_INFO("max9485", 0x63),
	38	};
	39
	40	#define MAX9485_MCLK_FREQ_112896 0x22
a4212968 DM	41	#define MAX9485_MCLK_FREQ_122880 0x23
	42	#define MAX9485_MCLK_FREQ_225792 0x32
	43	#define MAX9485_MCLK_FREQ_245760 0x33
49af574b DM	44
	45	static void set_max9485_clk(char clk)
	46	{
	47	i2c_master_send(max9486_client, &clk, 1);
	48	}
	49
	50	static void raumfeld_enable_audio(bool en)
	51	{
	52	if (en) {
	53	gpio_set_value(GPIO_MCLK_RESET, 1);
	54
	55	/* wait some time to let the clocks become stable */
	56	msleep(100);
	57
	58	gpio_set_value(GPIO_SPDIF_RESET, 1);
	59	gpio_set_value(GPIO_CODEC_RESET, 1);
	60	} else {
	61	gpio_set_value(GPIO_MCLK_RESET, 0);
	62	gpio_set_value(GPIO_SPDIF_RESET, 0);
	63	gpio_set_value(GPIO_CODEC_RESET, 0);
	64	}
	65	}
	66
	67	/* CS4270 */
	68	static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
	69	{
	70	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	71	struct snd_soc_dai *codec_dai = rtd->codec_dai;
49af574b	72
a4212968 DM	73	/* set freq to 0 to enable all possible codec sample rates */
	74	return snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
	75	}
49af574b	76
a4212968 DM	77	static void raumfeld_cs4270_shutdown(struct snd_pcm_substream *substream)
	78	{
	79	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	80	struct snd_soc_dai *codec_dai = rtd->codec_dai;
a4212968 DM	81
	82	/* set freq to 0 to enable all possible codec sample rates */
	83	snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
49af574b DM	84	}
	85
	86	static int raumfeld_cs4270_hw_params(struct snd_pcm_substream *substream,
	87	struct snd_pcm_hw_params *params)
	88	{
	89	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	90	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	91	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
49af574b DM	92	unsigned int fmt, clk = 0;
	93	int ret = 0;
	94
	95	switch (params_rate(params)) {
a4212968 DM	96	case 44100:
	97	set_max9485_clk(MAX9485_MCLK_FREQ_112896);
	98	clk = 11289600;
	99	break;
49af574b	100	case 48000:
49af574b DM	101	set_max9485_clk(MAX9485_MCLK_FREQ_122880);
	102	clk = 12288000;
	103	break;
49af574b	104	case 88200:
a4212968 DM	105	set_max9485_clk(MAX9485_MCLK_FREQ_225792);
a4212968 DM	106	clk = 22579200;
49af574b	107	break;
a4212968 DM	108	case 96000:
	109	set_max9485_clk(MAX9485_MCLK_FREQ_245760);
	110	clk = 24576000;
	111	break;
	112	default:
	113	return -EINVAL;
49af574b DM	114	}
	115
	116	fmt = SND_SOC_DAIFMT_I2S \|
	117	SND_SOC_DAIFMT_NB_NF \|
	118	SND_SOC_DAIFMT_CBS_CFS;
	119
	120	/* setup the CODEC DAI */
	121	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
	122	if (ret < 0)
	123	return ret;
	124
	125	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0);
	126	if (ret < 0)
	127	return ret;
	128
	129	/* setup the CPU DAI */
a649d1fc	130	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
49af574b DM	131	if (ret < 0)
	132	return ret;
	133
	134	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	135	if (ret < 0)
	136	return ret;
	137
	138	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
	139	if (ret < 0)
	140	return ret;
	141
a4212968	142	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
49af574b DM	143	if (ret < 0)
	144	return ret;
	145
	146	return 0;
	147	}
	148
	149	static struct snd_soc_ops raumfeld_cs4270_ops = {
	150	.startup = raumfeld_cs4270_startup,
a4212968	151	.shutdown = raumfeld_cs4270_shutdown,
49af574b DM	152	.hw_params = raumfeld_cs4270_hw_params,
	153	};
	154
	155	static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
	156	{
	157	raumfeld_enable_audio(false);
	158	return 0;
	159	}
	160
	161	static int raumfeld_line_resume(struct platform_device *pdev)
	162	{
	163	raumfeld_enable_audio(true);
	164	return 0;
	165	}
	166
49af574b DM	167	/* AK4104 */
	168
	169	static int raumfeld_ak4104_hw_params(struct snd_pcm_substream *substream,
	170	struct snd_pcm_hw_params *params)
	171	{
	172	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	173	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	174	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
49af574b DM	175	int fmt, ret = 0, clk = 0;
	176
	177	switch (params_rate(params)) {
a4212968 DM	178	case 44100:
	179	set_max9485_clk(MAX9485_MCLK_FREQ_112896);
	180	clk = 11289600;
	181	break;
49af574b	182	case 48000:
49af574b DM	183	set_max9485_clk(MAX9485_MCLK_FREQ_122880);
	184	clk = 12288000;
	185	break;
49af574b	186	case 88200:
a4212968 DM	187	set_max9485_clk(MAX9485_MCLK_FREQ_225792);
	188	clk = 22579200;
	189	break;
	190	case 96000:
	191	set_max9485_clk(MAX9485_MCLK_FREQ_245760);
	192	clk = 24576000;
49af574b	193	break;
a4212968 DM	194	default:
a4212968 DM	195	return -EINVAL;
49af574b DM	196	}
	197
	198	fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF;
	199
	200	/* setup the CODEC DAI */
	201	ret = snd_soc_dai_set_fmt(codec_dai, fmt \| SND_SOC_DAIFMT_CBS_CFS);
	202	if (ret < 0)
	203	return ret;
	204
	205	/* setup the CPU DAI */
a649d1fc	206	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
49af574b DM	207	if (ret < 0)
	208	return ret;
	209
	210	ret = snd_soc_dai_set_fmt(cpu_dai, fmt \| SND_SOC_DAIFMT_CBS_CFS);
	211	if (ret < 0)
	212	return ret;
	213
	214	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
	215	if (ret < 0)
	216	return ret;
	217
a4212968	218	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
49af574b DM	219	if (ret < 0)
	220	return ret;
	221
	222	return 0;
	223	}
	224
	225	static struct snd_soc_ops raumfeld_ak4104_ops = {
	226	.hw_params = raumfeld_ak4104_hw_params,
	227	};
	228
f0fba2ad LG	229	static struct snd_soc_dai_link raumfeld_dai[] = {
f0fba2ad LG	230	{
49af574b DM	231	.name = "ak4104",
49af574b DM	232	.stream_name = "Playback",
f0fba2ad LG	233	.cpu_dai_name = "pxa-ssp-dai.1",
	234	.codec_dai_name = "ak4104-hifi",
	235	.platform_name = "pxa-pcm-audio",
49af574b	236	.ops = &raumfeld_ak4104_ops,
f0fba2ad LG	237	.codec_name = "ak4104-codec.0",
	238	},
	239	{
	240	.name = "CS4270",
	241	.stream_name = "CS4270",
	242	.cpu_dai_name = "pxa-ssp-dai.0",
	243	.platform_name = "pxa-pcm-audio",
	244	.codec_dai_name = "cs4270-hifi",
	245	.codec_name = "cs4270-codec.0-0048",
	246	.ops = &raumfeld_cs4270_ops,
	247	},};
49af574b	248
f0fba2ad LG	249	static struct snd_soc_card snd_soc_raumfeld = {
	250	.name = "Raumfeld",
	251	.dai_link = raumfeld_dai,
	252	.suspend_post = raumfeld_line_suspend,
	253	.resume_pre = raumfeld_line_resume,
	254	.num_links = ARRAY_SIZE(raumfeld_dai),
49af574b DM	255	};
49af574b DM	256
f0fba2ad	257	static struct platform_device *raumfeld_audio_device;
49af574b DM	258
	259	static int __init raumfeld_audio_init(void)
	260	{
	261	int ret;
	262
	263	if (!machine_is_raumfeld_speaker() &&
	264	!machine_is_raumfeld_connector())
	265	return 0;
	266
	267	max9486_client = i2c_new_device(i2c_get_adapter(0),
	268	&max9486_hwmon_info);
	269
	270	if (!max9486_client)
	271	return -ENOMEM;
	272
	273	set_max9485_clk(MAX9485_MCLK_FREQ_122880);
	274
f0fba2ad LG	275	/* Register LINE and SPDIF */
	276	raumfeld_audio_device = platform_device_alloc("soc-audio", 0);
	277	if (!raumfeld_audio_device)
49af574b DM	278	return -ENOMEM;
49af574b DM	279
f0fba2ad LG	280	platform_set_drvdata(raumfeld_audio_device,
	281	&snd_soc_raumfeld);
	282	ret = platform_device_add(raumfeld_audio_device);
49af574b DM	283
	284	/* no S/PDIF on Speakers */
	285	if (machine_is_raumfeld_speaker())
	286	return ret;
	287
49af574b DM	288	raumfeld_enable_audio(true);
	289
	290	return ret;
	291	}
	292
	293	static void __exit raumfeld_audio_exit(void)
	294	{
	295	raumfeld_enable_audio(false);
	296
f0fba2ad	297	platform_device_unregister(raumfeld_audio_device);
49af574b DM	298
	299	i2c_unregister_device(max9486_client);
	300
	301	gpio_free(GPIO_MCLK_RESET);
	302	gpio_free(GPIO_CODEC_RESET);
	303	gpio_free(GPIO_SPDIF_RESET);
	304	}
	305
	306	module_init(raumfeld_audio_init);
	307	module_exit(raumfeld_audio_exit);
	308
	309	/* Module information */
	310	MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
	311	MODULE_DESCRIPTION("Raumfeld audio SoC");
	312	MODULE_LICENSE("GPL");