[deliverable/linux.git] / sound / soc / fsl / imx-wm8962.c

/*
 * Copyright 2013 Freescale Semiconductor, Inc.
 *
 * Based on 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_platform.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include <linux/pinctrl/consumer.h>

#include "../codecs/wm8962.h"
#include "imx-audmux.h"

#define DAI_NAME_SIZE	32

struct imx_wm8962_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;
};

struct imx_priv {
	struct platform_device *pdev;
};
static struct imx_priv card_priv;

static const struct snd_soc_dapm_widget imx_wm8962_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	SND_SOC_DAPM_MIC("AMIC", NULL),
	SND_SOC_DAPM_MIC("DMIC", NULL),
};

static int sample_rate = 44100;
static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE;

static int imx_hifi_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params)
{
	sample_rate = params_rate(params);
	sample_format = params_format(params);

	return 0;
}

static struct snd_soc_ops imx_hifi_ops = {
	.hw_params = imx_hifi_hw_params,
};

static int imx_wm8962_set_bias_level(struct snd_soc_card *card,
					struct snd_soc_dapm_context *dapm,
					enum snd_soc_bias_level level)
{
	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	struct imx_priv *priv = &card_priv;
	struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev);
	struct device *dev = &priv->pdev->dev;
	unsigned int pll_out;
	int ret;

	if (dapm->dev != codec_dai->dev)
		return 0;

	switch (level) {
	case SND_SOC_BIAS_PREPARE:
		if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
			if (sample_format == SNDRV_PCM_FORMAT_S24_LE)
				pll_out = sample_rate * 384;
			else
				pll_out = sample_rate * 256;

			ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
					WM8962_FLL_MCLK, data->clk_frequency,
					pll_out);
			if (ret < 0) {
				dev_err(dev, "failed to start FLL: %d\n", ret);
				return ret;
			}

			ret = snd_soc_dai_set_sysclk(codec_dai,
					WM8962_SYSCLK_FLL, pll_out,
					SND_SOC_CLOCK_IN);
			if (ret < 0) {
				dev_err(dev, "failed to set SYSCLK: %d\n", ret);
				return ret;
			}
		}
		break;

	case SND_SOC_BIAS_STANDBY:
		if (dapm->bias_level == SND_SOC_BIAS_PREPARE) {
			ret = snd_soc_dai_set_sysclk(codec_dai,
					WM8962_SYSCLK_MCLK, data->clk_frequency,
					SND_SOC_CLOCK_IN);
			if (ret < 0) {
				dev_err(dev,
					"failed to switch away from FLL: %d\n",
					ret);
				return ret;
			}

			ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
					0, 0, 0);
			if (ret < 0) {
				dev_err(dev, "failed to stop FLL: %d\n", ret);
				return ret;
			}
		}
		break;

	default:
		break;
	}

	dapm->bias_level = level;

	return 0;
}

static int imx_wm8962_late_probe(struct snd_soc_card *card)
{
	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	struct imx_priv *priv = &card_priv;
	struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev);
	struct device *dev = &priv->pdev->dev;
	int ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
			data->clk_frequency, SND_SOC_CLOCK_IN);
	if (ret < 0)
		dev_err(dev, "failed to set sysclk in %s\n", __func__);

	return ret;
}

static int imx_wm8962_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_priv *priv = &card_priv;
	struct i2c_client *codec_dev;
	struct imx_wm8962_data *data;
	int int_port, ext_port;
	int ret;

	priv->pdev = pdev;

	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_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 || !codec_dev->driver) {
		dev_err(&pdev->dev, "failed to find codec platform device\n");
		ret = -EINVAL;
		goto fail;
	}

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

	data->codec_clk = devm_clk_get(&codec_dev->dev, NULL);
	if (IS_ERR(data->codec_clk)) {
		ret = PTR_ERR(data->codec_clk);
		dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
		goto fail;
	}

	data->clk_frequency = clk_get_rate(data->codec_clk);
	ret = clk_prepare_enable(data->codec_clk);
	if (ret) {
		dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret);
		goto fail;
	}

	data->dai.name = "HiFi";
	data->dai.stream_name = "HiFi";
	data->dai.codec_dai_name = "wm8962";
	data->dai.codec_of_node = codec_np;
	data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
	data->dai.platform_of_node = ssi_np;
	data->dai.ops = &imx_hifi_ops;
	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.dai_link = &data->dai;
	data->card.dapm_widgets = imx_wm8962_dapm_widgets;
	data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets);

	data->card.late_probe = imx_wm8962_late_probe;
	data->card.set_bias_level = imx_wm8962_set_bias_level;

	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:
	if (!IS_ERR(data->codec_clk))
		clk_disable_unprepare(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_wm8962_remove(struct platform_device *pdev)
{
	struct imx_wm8962_data *data = platform_get_drvdata(pdev);

	if (!IS_ERR(data->codec_clk))
		clk_disable_unprepare(data->codec_clk);
	snd_soc_unregister_card(&data->card);

	return 0;
}

static const struct of_device_id imx_wm8962_dt_ids[] = {
	{ .compatible = "fsl,imx-audio-wm8962", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids);

static struct platform_driver imx_wm8962_driver = {
	.driver = {
		.name = "imx-wm8962",
		.owner = THIS_MODULE,
		.of_match_table = imx_wm8962_dt_ids,
	},
	.probe = imx_wm8962_probe,
	.remove = imx_wm8962_remove,
};
module_platform_driver(imx_wm8962_driver);

MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-wm8962");
Commit	Line	Data
8de2ae2a NC	1	/*
	2	* Copyright 2013 Freescale Semiconductor, Inc.
	3	*
	4	* Based on imx-sgtl5000.c
	5	* Copyright 2012 Freescale Semiconductor, Inc.
	6	* Copyright 2012 Linaro Ltd.
	7	*
	8	* The code contained herein is licensed under the GNU General Public
	9	* License. You may obtain a copy of the GNU General Public License
	10	* Version 2 or later at the following locations:
	11	*
	12	* http://www.opensource.org/licenses/gpl-license.html
	13	* http://www.gnu.org/copyleft/gpl.html
	14	*/
	15
	16	#include <linux/module.h>
	17	#include <linux/of_platform.h>
687b81d0	18	#include <linux/i2c.h>
8de2ae2a NC	19	#include <linux/slab.h>
	20	#include <linux/clk.h>
	21	#include <sound/soc.h>
	22	#include <sound/pcm_params.h>
	23	#include <sound/soc-dapm.h>
	24	#include <linux/pinctrl/consumer.h>
	25
	26	#include "../codecs/wm8962.h"
	27	#include "imx-audmux.h"
	28
	29	#define DAI_NAME_SIZE 32
	30
	31	struct imx_wm8962_data {
	32	struct snd_soc_dai_link dai;
	33	struct snd_soc_card card;
	34	char codec_dai_name[DAI_NAME_SIZE];
	35	char platform_name[DAI_NAME_SIZE];
	36	struct clk *codec_clk;
	37	unsigned int clk_frequency;
	38	};
	39
	40	struct imx_priv {
	41	struct platform_device *pdev;
	42	};
	43	static struct imx_priv card_priv;
	44
	45	static const struct snd_soc_dapm_widget imx_wm8962_dapm_widgets[] = {
	46	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	47	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	48	SND_SOC_DAPM_MIC("AMIC", NULL),
	49	SND_SOC_DAPM_MIC("DMIC", NULL),
	50	};
	51
	52	static int sample_rate = 44100;
	53	static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE;
	54
	55	static int imx_hifi_hw_params(struct snd_pcm_substream *substream,
	56	struct snd_pcm_hw_params *params)
	57	{
	58	sample_rate = params_rate(params);
	59	sample_format = params_format(params);
	60
	61	return 0;
	62	}
	63
	64	static struct snd_soc_ops imx_hifi_ops = {
	65	.hw_params = imx_hifi_hw_params,
	66	};
	67
	68	static int imx_wm8962_set_bias_level(struct snd_soc_card *card,
	69	struct snd_soc_dapm_context *dapm,
	70	enum snd_soc_bias_level level)
	71	{
	72	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	73	struct imx_priv *priv = &card_priv;
	74	struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev);
	75	struct device *dev = &priv->pdev->dev;
	76	unsigned int pll_out;
	77	int ret;
	78
	79	if (dapm->dev != codec_dai->dev)
	80	return 0;
	81
	82	switch (level) {
83	case SND_SOC_BIAS_PREPARE:
84	if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
85	if (sample_format == SNDRV_PCM_FORMAT_S24_LE)
86	pll_out = sample_rate * 384;
87	else
88	pll_out = sample_rate * 256;
89
90	ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
91	WM8962_FLL_MCLK, data->clk_frequency,
92	pll_out);
93	if (ret < 0) {
94	dev_err(dev, "failed to start FLL: %d\n", ret);
95	return ret;
96	}
97
98	ret = snd_soc_dai_set_sysclk(codec_dai,
99	WM8962_SYSCLK_FLL, pll_out,
100	SND_SOC_CLOCK_IN);
101	if (ret < 0) {
102	dev_err(dev, "failed to set SYSCLK: %d\n", ret);
103	return ret;
104	}
105	}
106	break;
107
108	case SND_SOC_BIAS_STANDBY:
109	if (dapm->bias_level == SND_SOC_BIAS_PREPARE) {
110	ret = snd_soc_dai_set_sysclk(codec_dai,
111	WM8962_SYSCLK_MCLK, data->clk_frequency,
112	SND_SOC_CLOCK_IN);
113	if (ret < 0) {
114	dev_err(dev,
115	"failed to switch away from FLL: %d\n",
116	ret);
117	return ret;
118	}
119
120	ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
121	0, 0, 0);
122	if (ret < 0) {
123	dev_err(dev, "failed to stop FLL: %d\n", ret);
124	return ret;
125	}
126	}
127	break;
128
129	default:
130	break;
131	}
132
133	dapm->bias_level = level;
134
135	return 0;
136	}
137
138	static int imx_wm8962_late_probe(struct snd_soc_card *card)
139	{
140	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
141	struct imx_priv *priv = &card_priv;
142	struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev);
143	struct device *dev = &priv->pdev->dev;
144	int ret;
145
146	ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
147	data->clk_frequency, SND_SOC_CLOCK_IN);
148	if (ret < 0)
149	dev_err(dev, "failed to set sysclk in %s\n", __func__);
150
151	return ret;
152	}
153
154	static int imx_wm8962_probe(struct platform_device *pdev)
155	{
156	struct device_node *np = pdev->dev.of_node;
157	struct device_node ssi_np, codec_np;
158	struct platform_device *ssi_pdev;
159	struct imx_priv *priv = &card_priv;
160	struct i2c_client *codec_dev;
161	struct imx_wm8962_data *data;
162	int int_port, ext_port;
163	int ret;
164
165	priv->pdev = pdev;
166
167	ret = of_property_read_u32(np, "mux-int-port", &int_port);
168	if (ret) {
169	dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
170	return ret;
171	}
172	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
173	if (ret) {
174	dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
175	return ret;
176	}
177
178	/*
179	* The port numbering in the hardware manual starts at 1, while
180	* the audmux API expects it starts at 0.
181	*/
182	int_port--;
183	ext_port--;
184	ret = imx_audmux_v2_configure_port(int_port,
185	IMX_AUDMUX_V2_PTCR_SYN \|
186	IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) \|
187	IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) \|
188	IMX_AUDMUX_V2_PTCR_TFSDIR \|
189	IMX_AUDMUX_V2_PTCR_TCLKDIR,
190	IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
191	if (ret) {
192	dev_err(&pdev->dev, "audmux internal port setup failed\n");
193	return ret;
194	}
195	imx_audmux_v2_configure_port(ext_port,
196	IMX_AUDMUX_V2_PTCR_SYN,
197	IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
198	if (ret) {
199	dev_err(&pdev->dev, "audmux external port setup failed\n");
200	return ret;
201	}
202
203	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
204	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
205	if (!ssi_np \|\| !codec_np) {
206	dev_err(&pdev->dev, "phandle missing or invalid\n");
207	ret = -EINVAL;
208	goto fail;
209	}
210
211	ssi_pdev = of_find_device_by_node(ssi_np);
212	if (!ssi_pdev) {
213	dev_err(&pdev->dev, "failed to find SSI platform device\n");
214	ret = -EINVAL;
215	goto fail;
216	}
217	codec_dev = of_find_i2c_device_by_node(codec_np);
218	if (!codec_dev \|\| !codec_dev->driver) {
219	dev_err(&pdev->dev, "failed to find codec platform device\n");
d8a14e30 FE	220	ret = -EINVAL;
d8a14e30 FE	221	goto fail;
8de2ae2a NC	222	}
	223
	224	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	225	if (!data) {
	226	ret = -ENOMEM;
	227	goto fail;
	228	}
	229
	230	data->codec_clk = devm_clk_get(&codec_dev->dev, NULL);
	231	if (IS_ERR(data->codec_clk)) {
	232	ret = PTR_ERR(data->codec_clk);
	233	dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
	234	goto fail;
	235	}
	236
	237	data->clk_frequency = clk_get_rate(data->codec_clk);
	238	ret = clk_prepare_enable(data->codec_clk);
	239	if (ret) {
	240	dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret);
	241	goto fail;
	242	}
	243
	244	data->dai.name = "HiFi";
	245	data->dai.stream_name = "HiFi";
	246	data->dai.codec_dai_name = "wm8962";
	247	data->dai.codec_of_node = codec_np;
	248	data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
	249	data->dai.platform_of_node = ssi_np;
	250	data->dai.ops = &imx_hifi_ops;
	251	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	252	SND_SOC_DAIFMT_CBM_CFM;
	253
	254	data->card.dev = &pdev->dev;
	255	ret = snd_soc_of_parse_card_name(&data->card, "model");
	256	if (ret)
	257	goto clk_fail;
	258	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
	259	if (ret)
	260	goto clk_fail;
	261	data->card.num_links = 1;
	262	data->card.dai_link = &data->dai;
	263	data->card.dapm_widgets = imx_wm8962_dapm_widgets;
	264	data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets);
	265
	266	data->card.late_probe = imx_wm8962_late_probe;
	267	data->card.set_bias_level = imx_wm8962_set_bias_level;
	268
	269	ret = snd_soc_register_card(&data->card);
	270	if (ret) {
	271	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
	272	goto clk_fail;
	273	}
	274
	275	platform_set_drvdata(pdev, data);
	276	of_node_put(ssi_np);
	277	of_node_put(codec_np);
	278
	279	return 0;
	280
	281	clk_fail:
	282	if (!IS_ERR(data->codec_clk))
	283	clk_disable_unprepare(data->codec_clk);
	284	fail:
	285	if (ssi_np)
286	of_node_put(ssi_np);
287	if (codec_np)
288	of_node_put(codec_np);
289
290	return ret;
291	}
292
293	static int imx_wm8962_remove(struct platform_device *pdev)
294	{
295	struct imx_wm8962_data *data = platform_get_drvdata(pdev);
296
297	if (!IS_ERR(data->codec_clk))
298	clk_disable_unprepare(data->codec_clk);
299	snd_soc_unregister_card(&data->card);
300
301	return 0;
302	}
303
304	static const struct of_device_id imx_wm8962_dt_ids[] = {
305	{ .compatible = "fsl,imx-audio-wm8962", },
306	{ /* sentinel */ }
307	};
308	MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids);
309
310	static struct platform_driver imx_wm8962_driver = {
311	.driver = {
312	.name = "imx-wm8962",
313	.owner = THIS_MODULE,
314	.of_match_table = imx_wm8962_dt_ids,
315	},
316	.probe = imx_wm8962_probe,
317	.remove = imx_wm8962_remove,
318	};
319	module_platform_driver(imx_wm8962_driver);
320
321	MODULE_AUTHOR("Freescale Semiconductor, Inc.");
322	MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
323	MODULE_LICENSE("GPL v2");
324	MODULE_ALIAS("platform:imx-wm8962");