[linux-2.6-block.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 <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];
	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 int __devinit 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 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;
	}
	imx_audmux_v2_configure_port(ext_port,
			IMX_AUDMUX_V2_PTCR_SYN |
			IMX_AUDMUX_V2_PTCR_TCSEL(int_port),
			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");
		return -EINVAL;
	}

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

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

	ret = of_property_read_u32(codec_np, "clock-frequency",
				   &data->clk_frequency);
	if (ret) {
		dev_err(&pdev->dev, "clock-frequency missing or invalid\n");
		return ret;
	}

	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_dai_name = dev_name(&ssi_pdev->dev);
	data->dai.platform_name = "imx-pcm-audio";
	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)
		return ret;
	data->card.num_links = 1;
	data->card.dai_link = &data->dai;

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

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

	return 0;
}

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

	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 = __devexit_p(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>
	16	#include <sound/soc.h>
	17
	18	#include "../codecs/sgtl5000.h"
	19	#include "imx-audmux.h"
	20
	21	#define DAI_NAME_SIZE 32
	22
	23	struct imx_sgtl5000_data {
	24	struct snd_soc_dai_link dai;
	25	struct snd_soc_card card;
	26	char codec_dai_name[DAI_NAME_SIZE];
	27	char platform_name[DAI_NAME_SIZE];
	28	unsigned int clk_frequency;
	29	};
	30
	31	static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
	32	{
	33	struct imx_sgtl5000_data *data = container_of(rtd->card,
	34	struct imx_sgtl5000_data, card);
	35	struct device *dev = rtd->card->dev;
	36	int ret;
	37
	38	ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
	39	data->clk_frequency, SND_SOC_CLOCK_IN);
	40	if (ret) {
	41	dev_err(dev, "could not set codec driver clock params\n");
	42	return ret;
	43	}
	44
	45	return 0;
	46	}
	47
	48	static int __devinit imx_sgtl5000_probe(struct platform_device *pdev)
	49	{
	50	struct device_node *np = pdev->dev.of_node;
	51	struct device_node ssi_np, codec_np;
	52	struct platform_device *ssi_pdev;
	53	struct imx_sgtl5000_data *data;
	54	int int_port, ext_port;
	55	int ret;
	56
	57	ret = of_property_read_u32(np, "mux-int-port", &int_port);
	58	if (ret) {
	59	dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
	60	return ret;
	61	}
	62	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
	63	if (ret) {
	64	dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
65	return ret;
66	}
67
68	/*
69	* The port numbering in the hardware manual starts at 1, while
70	* the audmux API expects it starts at 0.
71	*/
72	int_port--;
73	ext_port--;
74	ret = imx_audmux_v2_configure_port(int_port,
75	IMX_AUDMUX_V2_PTCR_SYN \|
76	IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) \|
77	IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) \|
78	IMX_AUDMUX_V2_PTCR_TFSDIR \|
79	IMX_AUDMUX_V2_PTCR_TCLKDIR,
80	IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
81	if (ret) {
82	dev_err(&pdev->dev, "audmux internal port setup failed\n");
83	return ret;
84	}
85	imx_audmux_v2_configure_port(ext_port,
86	IMX_AUDMUX_V2_PTCR_SYN \|
87	IMX_AUDMUX_V2_PTCR_TCSEL(int_port),
88	IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
89	if (ret) {
90	dev_err(&pdev->dev, "audmux external port setup failed\n");
91	return ret;
92	}
93
94	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
95	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
96	if (!ssi_np \|\| !codec_np) {
97	dev_err(&pdev->dev, "phandle missing or invalid\n");
98	return -EINVAL;
99	}
100
101	ssi_pdev = of_find_device_by_node(ssi_np);
102	if (!ssi_pdev) {
103	dev_err(&pdev->dev, "failed to find SSI platform device\n");
104	return -EINVAL;
105	}
106
107	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
108	if (!data)
109	return -ENOMEM;
110
111	ret = of_property_read_u32(codec_np, "clock-frequency",
112	&data->clk_frequency);
113	if (ret) {
114	dev_err(&pdev->dev, "clock-frequency missing or invalid\n");
115	return ret;
116	}
117
118	data->dai.name = "HiFi";
119	data->dai.stream_name = "HiFi";
120	data->dai.codec_dai_name = "sgtl5000";
121	data->dai.codec_of_node = codec_np;
122	data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
123	data->dai.platform_name = "imx-pcm-audio";
124	data->dai.init = &imx_sgtl5000_dai_init;
125	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
126	SND_SOC_DAIFMT_CBM_CFM;
127
128	data->card.dev = &pdev->dev;
129	ret = snd_soc_of_parse_card_name(&data->card, "model");
130	if (ret)
131	return ret;
132	data->card.num_links = 1;
133	data->card.dai_link = &data->dai;
134
135	ret = snd_soc_register_card(&data->card);
136	if (ret) {
137	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
138	return ret;
139	}
140
141	platform_set_drvdata(pdev, data);
142	of_node_put(ssi_np);
143	of_node_put(codec_np);
144
145	return 0;
146	}
147
148	static int __devexit imx_sgtl5000_remove(struct platform_device *pdev)
149	{
150	struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
151
152	snd_soc_unregister_card(&data->card);
153
154	return 0;
155	}
156
157	static const struct of_device_id imx_sgtl5000_dt_ids[] = {
158	{ .compatible = "fsl,imx-audio-sgtl5000", },
159	{ /* sentinel */ }
160	};
161	MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
162
163	static struct platform_driver imx_sgtl5000_driver = {
164	.driver = {
165	.name = "imx-sgtl5000",
166	.owner = THIS_MODULE,
167	.of_match_table = imx_sgtl5000_dt_ids,
168	},
169	.probe = imx_sgtl5000_probe,
170	.remove = __devexit_p(imx_sgtl5000_remove),
171	};
172	module_platform_driver(imx_sgtl5000_driver);
173
174	MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
175	MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
176	MODULE_LICENSE("GPL v2");
177	MODULE_ALIAS("platform:imx-sgtl5000");