[mirror_ubuntu-bionic-kernel.git] / sound / soc / fsl / eukrea-tlv320.c

/*
 * eukrea-tlv320.c  --  SoC audio for eukrea_cpuimxXX in I2S mode
 *
 * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
 *
 * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
 * which is Copyright 2009 Simtec Electronics
 * and on sound/soc/imx/phycore-ac97.c which is
 * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
 *
 *  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/errno.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>

#include "../codecs/tlv320aic23.h"
#include "imx-ssi.h"
#include "fsl_ssi.h"
#include "imx-audmux.h"

#define CODEC_CLOCK 12000000

static int eukrea_tlv320_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 ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
				     CODEC_CLOCK, SND_SOC_CLOCK_OUT);
	if (ret) {
		dev_err(cpu_dai->dev,
			"Failed to set the codec sysclk.\n");
		return ret;
	}

	snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);

	ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
				SND_SOC_CLOCK_IN);
	/* fsl_ssi lacks the set_sysclk ops */
	if (ret && ret != -EINVAL) {
		dev_err(cpu_dai->dev,
			"Can't set the IMX_SSP_SYS_CLK CPU system clock.\n");
		return ret;
	}

	return 0;
}

static const struct snd_soc_ops eukrea_tlv320_snd_ops = {
	.hw_params	= eukrea_tlv320_hw_params,
};

static struct snd_soc_dai_link eukrea_tlv320_dai = {
	.name		= "tlv320aic23",
	.stream_name	= "TLV320AIC23",
	.codec_dai_name	= "tlv320aic23-hifi",
	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			  SND_SOC_DAIFMT_CBM_CFM,
	.ops		= &eukrea_tlv320_snd_ops,
};

static struct snd_soc_card eukrea_tlv320 = {
	.owner		= THIS_MODULE,
	.dai_link	= &eukrea_tlv320_dai,
	.num_links	= 1,
};

static int eukrea_tlv320_probe(struct platform_device *pdev)
{
	int ret;
	int int_port = 0, ext_port;
	struct device_node *np = pdev->dev.of_node;
	struct device_node *ssi_np = NULL, *codec_np = NULL;

	eukrea_tlv320.dev = &pdev->dev;
	if (np) {
		ret = snd_soc_of_parse_card_name(&eukrea_tlv320,
						 "eukrea,model");
		if (ret) {
			dev_err(&pdev->dev,
				"eukrea,model node missing or invalid.\n");
			goto err;
		}

		ssi_np = of_parse_phandle(pdev->dev.of_node,
					  "ssi-controller", 0);
		if (!ssi_np) {
			dev_err(&pdev->dev,
				"ssi-controller missing or invalid.\n");
			ret = -ENODEV;
			goto err;
		}

		codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
		if (codec_np)
			eukrea_tlv320_dai.codec_of_node = codec_np;
		else
			dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");

		ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
		if (ret) {
			dev_err(&pdev->dev,
				"fsl,mux-int-port node missing or invalid.\n");
			return ret;
		}
		ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
		if (ret) {
			dev_err(&pdev->dev,
				"fsl,mux-ext-port node missing or invalid.\n");
			return ret;
		}

		/*
		 * The port numbering in the hardware manual starts at 1, while
		 * the audmux API expects it starts at 0.
		 */
		int_port--;
		ext_port--;

		eukrea_tlv320_dai.cpu_of_node = ssi_np;
		eukrea_tlv320_dai.platform_of_node = ssi_np;
	} else {
		eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0";
		eukrea_tlv320_dai.platform_name = "imx-ssi.0";
		eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a";
		eukrea_tlv320.name = "cpuimx-audio";
	}

	if (machine_is_eukrea_cpuimx27() ||
	    of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) {
		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
			IMX_AUDMUX_V1_PCR_SYN |
			IMX_AUDMUX_V1_PCR_TFSDIR |
			IMX_AUDMUX_V1_PCR_TCLKDIR |
			IMX_AUDMUX_V1_PCR_RFSDIR |
			IMX_AUDMUX_V1_PCR_RCLKDIR |
			IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
			IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
		);
		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
			IMX_AUDMUX_V1_PCR_SYN |
			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
		);
	} else if (machine_is_eukrea_cpuimx25sd() ||
		   machine_is_eukrea_cpuimx35sd() ||
		   machine_is_eukrea_cpuimx51sd() ||
		   of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) {
		if (!np)
			ext_port = machine_is_eukrea_cpuimx25sd() ?
				4 : 3;

		imx_audmux_v2_configure_port(int_port,
			IMX_AUDMUX_V2_PTCR_SYN |
			IMX_AUDMUX_V2_PTCR_TFSDIR |
			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
			IMX_AUDMUX_V2_PTCR_TCLKDIR |
			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
		);
		imx_audmux_v2_configure_port(ext_port,
			IMX_AUDMUX_V2_PTCR_SYN,
			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
		);
	} else {
		if (np) {
			/* The eukrea,asoc-tlv320 driver was explicitly
			 * requested (through the device tree).
			 */
			dev_err(&pdev->dev,
				"Missing or invalid audmux DT node.\n");
			return -ENODEV;
		} else {
			/* Return happy.
			 * We might run on a totally different machine.
			 */
			return 0;
		}
	}

	ret = snd_soc_register_card(&eukrea_tlv320);
err:
	if (ret)
		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
	of_node_put(ssi_np);

	return ret;
}

static int eukrea_tlv320_remove(struct platform_device *pdev)
{
	snd_soc_unregister_card(&eukrea_tlv320);

	return 0;
}

static const struct of_device_id imx_tlv320_dt_ids[] = {
	{ .compatible = "eukrea,asoc-tlv320"},
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);

static struct platform_driver eukrea_tlv320_driver = {
	.driver = {
		.name = "eukrea_tlv320",
		.of_match_table = imx_tlv320_dt_ids,
	},
	.probe = eukrea_tlv320_probe,
	.remove = eukrea_tlv320_remove,
};

module_platform_driver(eukrea_tlv320_driver);

MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:eukrea_tlv320");
Commit	Line	Data
91157888 EB	1	/*
	2	* eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
	3	*
	4	* Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
	5	*
	6	* based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
	7	* which is Copyright 2009 Simtec Electronics
	8	* and on sound/soc/imx/phycore-ac97.c which is
	9	* Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
a23dc694	10	*
91157888 EB	11	* This program is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2 of the License, or (at your
	14	* option) any later version.
	15	*
	16	*/
	17
66f23290	18	#include <linux/errno.h>
91157888 EB	19	#include <linux/module.h>
91157888 EB	20	#include <linux/moduleparam.h>
66f23290 DC	21	#include <linux/of.h>
66f23290 DC	22	#include <linux/of_platform.h>
91157888 EB	23	#include <linux/device.h>
	24	#include <linux/i2c.h>
	25	#include <sound/core.h>
	26	#include <sound/pcm.h>
	27	#include <sound/soc.h>
91157888 EB	28	#include <asm/mach-types.h>
	29
	30	#include "../codecs/tlv320aic23.h"
	31	#include "imx-ssi.h"
66f23290	32	#include "fsl_ssi.h"
3c77c29c	33	#include "imx-audmux.h"
91157888 EB	34
	35	#define CODEC_CLOCK 12000000
	36
	37	static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
	38	struct snd_pcm_hw_params *params)
	39	{
	40	struct snd_soc_pcm_runtime *rtd = substream->private_data;
add330ec SH	41	struct snd_soc_dai *codec_dai = rtd->codec_dai;
add330ec SH	42	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
91157888 EB	43	int ret;
91157888 EB	44
91157888 EB	45	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
	46	CODEC_CLOCK, SND_SOC_CLOCK_OUT);
	47	if (ret) {
154bab12 DC	48	dev_err(cpu_dai->dev,
154bab12 DC	49	"Failed to set the codec sysclk.\n");
91157888 EB	50	return ret;
91157888 EB	51	}
66f23290	52
d0077aaf	53	snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
91157888 EB	54
	55	ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
	56	SND_SOC_CLOCK_IN);
66f23290 DC	57	/* fsl_ssi lacks the set_sysclk ops */
66f23290 DC	58	if (ret && ret != -EINVAL) {
154bab12 DC	59	dev_err(cpu_dai->dev,
154bab12 DC	60	"Can't set the IMX_SSP_SYS_CLK CPU system clock.\n");
91157888 EB	61	return ret;
	62	}
	63
	64	return 0;
	65	}
	66
5ace37bd	67	static const struct snd_soc_ops eukrea_tlv320_snd_ops = {
91157888 EB	68	.hw_params = eukrea_tlv320_hw_params,
	69	};
	70
	71	static struct snd_soc_dai_link eukrea_tlv320_dai = {
	72	.name = "tlv320aic23",
	73	.stream_name = "TLV320AIC23",
add330ec	74	.codec_dai_name = "tlv320aic23-hifi",
4de59dbd LPC	75	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
4de59dbd LPC	76	SND_SOC_DAIFMT_CBM_CFM,
91157888 EB	77	.ops = &eukrea_tlv320_snd_ops,
	78	};
	79
	80	static struct snd_soc_card eukrea_tlv320 = {
6aff8ccb	81	.owner = THIS_MODULE,
91157888 EB	82	.dai_link = &eukrea_tlv320_dai,
	83	.num_links = 1,
	84	};
	85
a0a3d518	86	static int eukrea_tlv320_probe(struct platform_device *pdev)
91157888 EB	87	{
91157888 EB	88	int ret;
60282ede	89	int int_port = 0, ext_port;
66f23290	90	struct device_node *np = pdev->dev.of_node;
077661b6	91	struct device_node ssi_np = NULL, codec_np = NULL;
60282ede	92
66f23290 DC	93	eukrea_tlv320.dev = &pdev->dev;
	94	if (np) {
	95	ret = snd_soc_of_parse_card_name(&eukrea_tlv320,
	96	"eukrea,model");
	97	if (ret) {
	98	dev_err(&pdev->dev,
	99	"eukrea,model node missing or invalid.\n");
	100	goto err;
	101	}
	102
	103	ssi_np = of_parse_phandle(pdev->dev.of_node,
	104	"ssi-controller", 0);
	105	if (!ssi_np) {
	106	dev_err(&pdev->dev,
	107	"ssi-controller missing or invalid.\n");
	108	ret = -ENODEV;
	109	goto err;
	110	}
	111
	112	codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
	113	if (codec_np)
	114	eukrea_tlv320_dai.codec_of_node = codec_np;
	115	else
	116	dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");
	117
	118	ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
	119	if (ret) {
	120	dev_err(&pdev->dev,
	121	"fsl,mux-int-port node missing or invalid.\n");
	122	return ret;
	123	}
	124	ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
	125	if (ret) {
	126	dev_err(&pdev->dev,
	127	"fsl,mux-ext-port node missing or invalid.\n");
	128	return ret;
	129	}
	130
	131	/*
	132	* The port numbering in the hardware manual starts at 1, while
	133	* the audmux API expects it starts at 0.
	134	*/
	135	int_port--;
	136	ext_port--;
	137
	138	eukrea_tlv320_dai.cpu_of_node = ssi_np;
	139	eukrea_tlv320_dai.platform_of_node = ssi_np;
	140	} else {
	141	eukrea_tlv320_dai.cpu_dai_name = "imx-ssi.0";
	142	eukrea_tlv320_dai.platform_name = "imx-ssi.0";
	143	eukrea_tlv320_dai.codec_name = "tlv320aic23-codec.0-001a";
	144	eukrea_tlv320.name = "cpuimx-audio";
	145	}
	146
	147	if (machine_is_eukrea_cpuimx27() \|\|
	148	of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux")) {
af4872fb SG	149	imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
	150	IMX_AUDMUX_V1_PCR_SYN \|
	151	IMX_AUDMUX_V1_PCR_TFSDIR \|
	152	IMX_AUDMUX_V1_PCR_TCLKDIR \|
	153	IMX_AUDMUX_V1_PCR_RFSDIR \|
	154	IMX_AUDMUX_V1_PCR_RCLKDIR \|
	155	IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) \|
	156	IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) \|
	157	IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
60282ede	158	);
af4872fb SG	159	imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
	160	IMX_AUDMUX_V1_PCR_SYN \|
	161	IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
60282ede SG	162	);
	163	} else if (machine_is_eukrea_cpuimx25sd() \|\|
	164	machine_is_eukrea_cpuimx35sd() \|\|
66f23290 DC	165	machine_is_eukrea_cpuimx51sd() \|\|
	166	of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux")) {
	167	if (!np)
	168	ext_port = machine_is_eukrea_cpuimx25sd() ?
	169	4 : 3;
	170
af4872fb SG	171	imx_audmux_v2_configure_port(int_port,
	172	IMX_AUDMUX_V2_PTCR_SYN \|
	173	IMX_AUDMUX_V2_PTCR_TFSDIR \|
	174	IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) \|
	175	IMX_AUDMUX_V2_PTCR_TCLKDIR \|
	176	IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
	177	IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
60282ede	178	);
af4872fb SG	179	imx_audmux_v2_configure_port(ext_port,
	180	IMX_AUDMUX_V2_PTCR_SYN,
	181	IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
60282ede SG	182	);
60282ede SG	183	} else {
66f23290	184	if (np) {
dcfcf2c2	185	/* The eukrea,asoc-tlv320 driver was explicitly
66f23290 DC	186	* requested (through the device tree).
	187	*/
	188	dev_err(&pdev->dev,
	189	"Missing or invalid audmux DT node.\n");
	190	return -ENODEV;
	191	} else {
	192	/* Return happy.
	193	* We might run on a totally different machine.
	194	*/
	195	return 0;
	196	}
60282ede	197	}
91157888	198
da75c924	199	ret = snd_soc_register_card(&eukrea_tlv320);
66f23290	200	err:
da75c924 FE	201	if (ret)
da75c924 FE	202	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
89dea487	203	of_node_put(ssi_np);
91157888 EB	204
	205	return ret;
	206	}
	207
a0a3d518	208	static int eukrea_tlv320_remove(struct platform_device *pdev)
91157888	209	{
da75c924 FE	210	snd_soc_unregister_card(&eukrea_tlv320);
	211
	212	return 0;
91157888 EB	213	}
91157888 EB	214
66f23290 DC	215	static const struct of_device_id imx_tlv320_dt_ids[] = {
	216	{ .compatible = "eukrea,asoc-tlv320"},
	217	{ /* sentinel */ }
	218	};
	219	MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
	220
da75c924 FE	221	static struct platform_driver eukrea_tlv320_driver = {
	222	.driver = {
	223	.name = "eukrea_tlv320",
66f23290	224	.of_match_table = imx_tlv320_dt_ids,
da75c924 FE	225	},
da75c924 FE	226	.probe = eukrea_tlv320_probe,
154bab12 DC	227	.remove = eukrea_tlv320_remove,
154bab12 DC	228	};
da75c924 FE	229
da75c924 FE	230	module_platform_driver(eukrea_tlv320_driver);
91157888 EB	231
	232	MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
	233	MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
	234	MODULE_LICENSE("GPL");
da75c924	235	MODULE_ALIAS("platform:eukrea_tlv320");