[deliverable/linux.git] / sound / soc / fsl / imx-sgtl5000.c

/*
 * Copyright 2012 Freescale Semiconductor, Inc.
 * Copyright 2012 Linaro Ltd.
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_i2c.h>
#include <linux/clk.h>
#include <sound/soc.h>

#include "../codecs/sgtl5000.h"
#include "imx-audmux.h"

#define DAI_NAME_SIZE	32

struct imx_sgtl5000_data {
	struct snd_soc_dai_link dai;
	struct snd_soc_card card;
	char codec_dai_name[DAI_NAME_SIZE];
	char platform_name[DAI_NAME_SIZE];
	struct clk *codec_clk;
	unsigned int clk_frequency;
};

static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
{
	struct imx_sgtl5000_data *data = container_of(rtd->card,
					struct imx_sgtl5000_data, card);
	struct device *dev = rtd->card->dev;
	int ret;

	ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
				     data->clk_frequency, SND_SOC_CLOCK_IN);
	if (ret) {
		dev_err(dev, "could not set codec driver clock params\n");
		return ret;
	}

	return 0;
}

static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_LINE("Line In Jack", NULL),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_SPK("Line Out Jack", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
};

static int imx_sgtl5000_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct device_node *ssi_np, *codec_np;
	struct platform_device *ssi_pdev;
	struct i2c_client *codec_dev;
	struct imx_sgtl5000_data *data;
	int int_port, ext_port;
	int ret;

	ret = of_property_read_u32(np, "mux-int-port", &int_port);
	if (ret) {
		dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
		return ret;
	}
	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
	if (ret) {
		dev_err(&pdev->dev, "mux-ext-port 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--;
	ret = imx_audmux_v2_configure_port(int_port,
			IMX_AUDMUX_V2_PTCR_SYN |
			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
			IMX_AUDMUX_V2_PTCR_TFSDIR |
			IMX_AUDMUX_V2_PTCR_TCLKDIR,
			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
	if (ret) {
		dev_err(&pdev->dev, "audmux internal port setup failed\n");
		return ret;
	}
	ret = imx_audmux_v2_configure_port(ext_port,
			IMX_AUDMUX_V2_PTCR_SYN,
			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
	if (ret) {
		dev_err(&pdev->dev, "audmux external port setup failed\n");
		return ret;
	}

	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
	if (!ssi_np || !codec_np) {
		dev_err(&pdev->dev, "phandle missing or invalid\n");
		ret = -EINVAL;
		goto fail;
	}

	ssi_pdev = of_find_device_by_node(ssi_np);
	if (!ssi_pdev) {
		dev_err(&pdev->dev, "failed to find SSI platform device\n");
		ret = -EINVAL;
		goto fail;
	}
	codec_dev = of_find_i2c_device_by_node(codec_np);
	if (!codec_dev) {
		dev_err(&pdev->dev, "failed to find codec platform device\n");
		return -EINVAL;
	}

	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	if (!data) {
		ret = -ENOMEM;
		goto fail;
	}

	data->codec_clk = clk_get(&codec_dev->dev, NULL);
	if (IS_ERR(data->codec_clk)) {
		/* assuming clock enabled by default */
		data->codec_clk = NULL;
		ret = of_property_read_u32(codec_np, "clock-frequency",
					&data->clk_frequency);
		if (ret) {
			dev_err(&codec_dev->dev,
				"clock-frequency missing or invalid\n");
			goto fail;
		}
	} else {
		data->clk_frequency = clk_get_rate(data->codec_clk);
		clk_prepare_enable(data->codec_clk);
	}

	data->dai.name = "HiFi";
	data->dai.stream_name = "HiFi";
	data->dai.codec_dai_name = "sgtl5000";
	data->dai.codec_of_node = codec_np;
	data->dai.cpu_of_node = ssi_np;
	data->dai.platform_of_node = ssi_np;
	data->dai.init = &imx_sgtl5000_dai_init;
	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			    SND_SOC_DAIFMT_CBM_CFM;

	data->card.dev = &pdev->dev;
	ret = snd_soc_of_parse_card_name(&data->card, "model");
	if (ret)
		goto clk_fail;
	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
	if (ret)
		goto clk_fail;
	data->card.num_links = 1;
	data->card.owner = THIS_MODULE;
	data->card.dai_link = &data->dai;
	data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
	data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);

	ret = snd_soc_register_card(&data->card);
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
		goto clk_fail;
	}

	platform_set_drvdata(pdev, data);
	of_node_put(ssi_np);
	of_node_put(codec_np);

	return 0;

clk_fail:
	clk_put(data->codec_clk);
fail:
	if (ssi_np)
		of_node_put(ssi_np);
	if (codec_np)
		of_node_put(codec_np);

	return ret;
}

static int imx_sgtl5000_remove(struct platform_device *pdev)
{
	struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);

	if (data->codec_clk) {
		clk_disable_unprepare(data->codec_clk);
		clk_put(data->codec_clk);
	}
	snd_soc_unregister_card(&data->card);

	return 0;
}

static const struct of_device_id imx_sgtl5000_dt_ids[] = {
	{ .compatible = "fsl,imx-audio-sgtl5000", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);

static struct platform_driver imx_sgtl5000_driver = {
	.driver = {
		.name = "imx-sgtl5000",
		.owner = THIS_MODULE,
		.of_match_table = imx_sgtl5000_dt_ids,
	},
	.probe = imx_sgtl5000_probe,
	.remove = imx_sgtl5000_remove,
};
module_platform_driver(imx_sgtl5000_driver);

MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-sgtl5000");
Commit	Line	Data
c448303e SG	1	/*
	2	* Copyright 2012 Freescale Semiconductor, Inc.
	3	* Copyright 2012 Linaro Ltd.
	4	*
	5	* The code contained herein is licensed under the GNU General Public
	6	* License. You may obtain a copy of the GNU General Public License
	7	* Version 2 or later at the following locations:
	8	*
	9	* http://www.opensource.org/licenses/gpl-license.html
	10	* http://www.gnu.org/copyleft/gpl.html
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/of.h>
	15	#include <linux/of_platform.h>
81e8e492 RZ	16	#include <linux/of_i2c.h>
81e8e492 RZ	17	#include <linux/clk.h>
c448303e SG	18	#include <sound/soc.h>
	19
	20	#include "../codecs/sgtl5000.h"
	21	#include "imx-audmux.h"
	22
	23	#define DAI_NAME_SIZE 32
	24
	25	struct imx_sgtl5000_data {
	26	struct snd_soc_dai_link dai;
	27	struct snd_soc_card card;
	28	char codec_dai_name[DAI_NAME_SIZE];
	29	char platform_name[DAI_NAME_SIZE];
81e8e492	30	struct clk *codec_clk;
c448303e SG	31	unsigned int clk_frequency;
	32	};
	33
	34	static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
	35	{
	36	struct imx_sgtl5000_data *data = container_of(rtd->card,
	37	struct imx_sgtl5000_data, card);
	38	struct device *dev = rtd->card->dev;
	39	int ret;
	40
	41	ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
	42	data->clk_frequency, SND_SOC_CLOCK_IN);
	43	if (ret) {
	44	dev_err(dev, "could not set codec driver clock params\n");
	45	return ret;
	46	}
	47
	48	return 0;
	49	}
	50
172b4c5c SG	51	static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
	52	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	53	SND_SOC_DAPM_LINE("Line In Jack", NULL),
	54	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	55	SND_SOC_DAPM_SPK("Line Out Jack", NULL),
	56	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	57	};
	58
a0a3d518	59	static int imx_sgtl5000_probe(struct platform_device *pdev)
c448303e SG	60	{
	61	struct device_node *np = pdev->dev.of_node;
	62	struct device_node ssi_np, codec_np;
	63	struct platform_device *ssi_pdev;
81e8e492	64	struct i2c_client *codec_dev;
c448303e SG	65	struct imx_sgtl5000_data *data;
	66	int int_port, ext_port;
	67	int ret;
	68
	69	ret = of_property_read_u32(np, "mux-int-port", &int_port);
	70	if (ret) {
	71	dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
	72	return ret;
	73	}
	74	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
	75	if (ret) {
	76	dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
	77	return ret;
	78	}
	79
	80	/*
	81	* The port numbering in the hardware manual starts at 1, while
	82	* the audmux API expects it starts at 0.
	83	*/
	84	int_port--;
	85	ext_port--;
	86	ret = imx_audmux_v2_configure_port(int_port,
	87	IMX_AUDMUX_V2_PTCR_SYN \|
	88	IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) \|
	89	IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) \|
	90	IMX_AUDMUX_V2_PTCR_TFSDIR \|
	91	IMX_AUDMUX_V2_PTCR_TCLKDIR,
	92	IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
	93	if (ret) {
	94	dev_err(&pdev->dev, "audmux internal port setup failed\n");
	95	return ret;
	96	}
db8b624d	97	ret = imx_audmux_v2_configure_port(ext_port,
ef3207c5	98	IMX_AUDMUX_V2_PTCR_SYN,
c448303e SG	99	IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
	100	if (ret) {
	101	dev_err(&pdev->dev, "audmux external port setup failed\n");
	102	return ret;
	103	}
	104
	105	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
	106	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
	107	if (!ssi_np \|\| !codec_np) {
	108	dev_err(&pdev->dev, "phandle missing or invalid\n");
717071dc RZ	109	ret = -EINVAL;
717071dc RZ	110	goto fail;
c448303e SG	111	}
	112
	113	ssi_pdev = of_find_device_by_node(ssi_np);
	114	if (!ssi_pdev) {
	115	dev_err(&pdev->dev, "failed to find SSI platform device\n");
717071dc RZ	116	ret = -EINVAL;
717071dc RZ	117	goto fail;
c448303e	118	}
81e8e492 RZ	119	codec_dev = of_find_i2c_device_by_node(codec_np);
	120	if (!codec_dev) {
	121	dev_err(&pdev->dev, "failed to find codec platform device\n");
	122	return -EINVAL;
	123	}
c448303e SG	124
c448303e SG	125	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
717071dc RZ	126	if (!data) {
	127	ret = -ENOMEM;
	128	goto fail;
	129	}
c448303e	130
81e8e492 RZ	131	data->codec_clk = clk_get(&codec_dev->dev, NULL);
	132	if (IS_ERR(data->codec_clk)) {
	133	/* assuming clock enabled by default */
	134	data->codec_clk = NULL;
	135	ret = of_property_read_u32(codec_np, "clock-frequency",
	136	&data->clk_frequency);
	137	if (ret) {
	138	dev_err(&codec_dev->dev,
	139	"clock-frequency missing or invalid\n");
	140	goto fail;
	141	}
	142	} else {
	143	data->clk_frequency = clk_get_rate(data->codec_clk);
	144	clk_prepare_enable(data->codec_clk);
c448303e SG	145	}
	146
	147	data->dai.name = "HiFi";
	148	data->dai.stream_name = "HiFi";
	149	data->dai.codec_dai_name = "sgtl5000";
	150	data->dai.codec_of_node = codec_np;
fa659d83	151	data->dai.cpu_of_node = ssi_np;
bd41bc96	152	data->dai.platform_of_node = ssi_np;
c448303e SG	153	data->dai.init = &imx_sgtl5000_dai_init;
	154	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	155	SND_SOC_DAIFMT_CBM_CFM;
	156
	157	data->card.dev = &pdev->dev;
	158	ret = snd_soc_of_parse_card_name(&data->card, "model");
172b4c5c	159	if (ret)
81e8e492	160	goto clk_fail;
172b4c5c	161	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
c448303e	162	if (ret)
81e8e492	163	goto clk_fail;
c448303e	164	data->card.num_links = 1;
29df4306	165	data->card.owner = THIS_MODULE;
c448303e	166	data->card.dai_link = &data->dai;
172b4c5c SG	167	data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
172b4c5c SG	168	data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
c448303e SG	169
	170	ret = snd_soc_register_card(&data->card);
	171	if (ret) {
	172	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
81e8e492	173	goto clk_fail;
c448303e SG	174	}
	175
	176	platform_set_drvdata(pdev, data);
2fc059f2 FE	177	of_node_put(ssi_np);
	178	of_node_put(codec_np);
	179
	180	return 0;
	181
81e8e492 RZ	182	clk_fail:
81e8e492 RZ	183	clk_put(data->codec_clk);
717071dc RZ	184	fail:
	185	if (ssi_np)
	186	of_node_put(ssi_np);
	187	if (codec_np)
	188	of_node_put(codec_np);
c448303e	189
717071dc	190	return ret;
c448303e SG	191	}
c448303e SG	192
a0a3d518	193	static int imx_sgtl5000_remove(struct platform_device *pdev)
c448303e SG	194	{
	195	struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
	196
81e8e492 RZ	197	if (data->codec_clk) {
	198	clk_disable_unprepare(data->codec_clk);
	199	clk_put(data->codec_clk);
	200	}
c448303e SG	201	snd_soc_unregister_card(&data->card);
	202
	203	return 0;
	204	}
	205
	206	static const struct of_device_id imx_sgtl5000_dt_ids[] = {
	207	{ .compatible = "fsl,imx-audio-sgtl5000", },
	208	{ /* sentinel */ }
	209	};
	210	MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
	211
	212	static struct platform_driver imx_sgtl5000_driver = {
	213	.driver = {
	214	.name = "imx-sgtl5000",
	215	.owner = THIS_MODULE,
	216	.of_match_table = imx_sgtl5000_dt_ids,
	217	},
	218	.probe = imx_sgtl5000_probe,
a0a3d518	219	.remove = imx_sgtl5000_remove,
c448303e SG	220	};
	221	module_platform_driver(imx_sgtl5000_driver);
	222
	223	MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
	224	MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
	225	MODULE_LICENSE("GPL v2");
	226	MODULE_ALIAS("platform:imx-sgtl5000");