[deliverable/linux.git] / sound / soc / tegra / tegra_rt5640.c

/*
* tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
 *
 * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Based on code copyright/by:
 *
 * Copyright (C) 2010-2012 - NVIDIA, Inc.
 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 * Copyright 2007 Wolfson Microelectronics PLC.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>

#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "../codecs/rt5640.h"

#include "tegra_asoc_utils.h"

#define DRV_NAME "tegra-snd-rt5640"

struct tegra_rt5640 {
	struct tegra_asoc_utils_data util_data;
	int gpio_hp_det;
};

static int tegra_rt5640_asoc_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_codec *codec = codec_dai->codec;
	struct snd_soc_card *card = codec->card;
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
	int srate, mclk;
	int err;

	srate = params_rate(params);
	mclk = 256 * srate;

	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	if (err < 0) {
		dev_err(card->dev, "Can't configure clocks\n");
		return err;
	}

	err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
					SND_SOC_CLOCK_IN);
	if (err < 0) {
		dev_err(card->dev, "codec_dai clock not set\n");
		return err;
	}

	return 0;
}

static struct snd_soc_ops tegra_rt5640_ops = {
	.hw_params = tegra_rt5640_asoc_hw_params,
};

static struct snd_soc_jack tegra_rt5640_hp_jack;

static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
	{
		.pin = "Headphones",
		.mask = SND_JACK_HEADPHONE,
	},
};

static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
	.name = "Headphone detection",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 150,
	.invert = 1,
};

static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphones", NULL),
	SND_SOC_DAPM_SPK("Speakers", NULL),
};

static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
	SOC_DAPM_PIN_SWITCH("Speakers"),
};

static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = codec_dai->codec;
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(codec->card);

	snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
			 &tegra_rt5640_hp_jack);
	snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
			ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
			tegra_rt5640_hp_jack_pins);

	if (gpio_is_valid(machine->gpio_hp_det)) {
		tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
		snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
						1,
						&tegra_rt5640_hp_jack_gpio);
	}

	return 0;
}

static struct snd_soc_dai_link tegra_rt5640_dai = {
	.name = "RT5640",
	.stream_name = "RT5640 PCM",
	.codec_dai_name = "rt5640-aif1",
	.init = tegra_rt5640_asoc_init,
	.ops = &tegra_rt5640_ops,
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBS_CFS,
};

static struct snd_soc_card snd_soc_tegra_rt5640 = {
	.name = "tegra-rt5640",
	.owner = THIS_MODULE,
	.dai_link = &tegra_rt5640_dai,
	.num_links = 1,
	.controls = tegra_rt5640_controls,
	.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
	.dapm_widgets = tegra_rt5640_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
	.fully_routed = true,
};

static int tegra_rt5640_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &snd_soc_tegra_rt5640;
	struct tegra_rt5640 *machine;
	int ret;

	machine = devm_kzalloc(&pdev->dev,
			sizeof(struct tegra_rt5640), GFP_KERNEL);
	if (!machine) {
		dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
		return -ENOMEM;
	}

	card->dev = &pdev->dev;
	platform_set_drvdata(pdev, card);
	snd_soc_card_set_drvdata(card, machine);

	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
	if (machine->gpio_hp_det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	if (ret)
		goto err;

	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	if (ret)
		goto err;

	tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
			"nvidia,audio-codec", 0);
	if (!tegra_rt5640_dai.codec_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,audio-codec' missing or invalid\n");
		ret = -EINVAL;
		goto err;
	}

	tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
			"nvidia,i2s-controller", 0);
	if (!tegra_rt5640_dai.cpu_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,i2s-controller' missing or invalid\n");
		ret = -EINVAL;
		goto err;
	}

	tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;

	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	if (ret)
		goto err;

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

	return 0;

err_fini_utils:
	tegra_asoc_utils_fini(&machine->util_data);
err:
	return ret;
}

static int tegra_rt5640_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);

	snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
				&tegra_rt5640_hp_jack_gpio);

	snd_soc_unregister_card(card);

	tegra_asoc_utils_fini(&machine->util_data);

	return 0;
}

static const struct of_device_id tegra_rt5640_of_match[] = {
	{ .compatible = "nvidia,tegra-audio-rt5640", },
	{},
};

static struct platform_driver tegra_rt5640_driver = {
	.driver = {
		.name = DRV_NAME,
		.owner = THIS_MODULE,
		.pm = &snd_soc_pm_ops,
		.of_match_table = tegra_rt5640_of_match,
	},
	.probe = tegra_rt5640_probe,
	.remove = tegra_rt5640_remove,
};
module_platform_driver(tegra_rt5640_driver);

MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
Commit	Line	Data
040a62cf SW	1	/*
	2	* tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
	3	*
	4	* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*
	18	* Based on code copyright/by:
	19	*
	20	* Copyright (C) 2010-2012 - NVIDIA, Inc.
	21	* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
	22	* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
	23	* Copyright 2007 Wolfson Microelectronics PLC.
	24	*/
	25
	26	#include <linux/module.h>
	27	#include <linux/platform_device.h>
	28	#include <linux/slab.h>
	29	#include <linux/gpio.h>
	30	#include <linux/of_gpio.h>
	31
	32	#include <sound/core.h>
	33	#include <sound/jack.h>
	34	#include <sound/pcm.h>
	35	#include <sound/pcm_params.h>
	36	#include <sound/soc.h>
	37
	38	#include "../codecs/rt5640.h"
	39
	40	#include "tegra_asoc_utils.h"
	41
	42	#define DRV_NAME "tegra-snd-rt5640"
	43
	44	struct tegra_rt5640 {
	45	struct tegra_asoc_utils_data util_data;
	46	int gpio_hp_det;
	47	};
	48
	49	static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
	50	struct snd_pcm_hw_params *params)
	51	{
	52	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	53	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	54	struct snd_soc_codec *codec = codec_dai->codec;
	55	struct snd_soc_card *card = codec->card;
	56	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
	57	int srate, mclk;
	58	int err;
	59
	60	srate = params_rate(params);
	61	mclk = 256 * srate;
	62
	63	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	64	if (err < 0) {
65	dev_err(card->dev, "Can't configure clocks\n");
66	return err;
67	}
68
69	err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
70	SND_SOC_CLOCK_IN);
71	if (err < 0) {
72	dev_err(card->dev, "codec_dai clock not set\n");
73	return err;
74	}
75
76	return 0;
77	}
78
79	static struct snd_soc_ops tegra_rt5640_ops = {
80	.hw_params = tegra_rt5640_asoc_hw_params,
81	};
82
83	static struct snd_soc_jack tegra_rt5640_hp_jack;
84
85	static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
86	{
87	.pin = "Headphones",
88	.mask = SND_JACK_HEADPHONE,
89	},
90	};
91
92	static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
93	.name = "Headphone detection",
94	.report = SND_JACK_HEADPHONE,
95	.debounce_time = 150,
96	.invert = 1,
97	};
98
99	static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
100	SND_SOC_DAPM_HP("Headphones", NULL),
101	SND_SOC_DAPM_SPK("Speakers", NULL),
102	};
103
104	static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
105	SOC_DAPM_PIN_SWITCH("Speakers"),
106	};
107
108	static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
109	{
110	struct snd_soc_dai *codec_dai = rtd->codec_dai;
111	struct snd_soc_codec *codec = codec_dai->codec;
112	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(codec->card);
113
114	snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
115	&tegra_rt5640_hp_jack);
116	snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
117	ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
118	tegra_rt5640_hp_jack_pins);
119
120	if (gpio_is_valid(machine->gpio_hp_det)) {
121	tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
122	snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
123	1,
124	&tegra_rt5640_hp_jack_gpio);
125	}
126
127	return 0;
128	}
129
130	static struct snd_soc_dai_link tegra_rt5640_dai = {
131	.name = "RT5640",
132	.stream_name = "RT5640 PCM",
133	.codec_dai_name = "rt5640-aif1",
134	.init = tegra_rt5640_asoc_init,
135	.ops = &tegra_rt5640_ops,
136	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
137	SND_SOC_DAIFMT_CBS_CFS,
138	};
139
140	static struct snd_soc_card snd_soc_tegra_rt5640 = {
141	.name = "tegra-rt5640",
142	.owner = THIS_MODULE,
143	.dai_link = &tegra_rt5640_dai,
144	.num_links = 1,
145	.controls = tegra_rt5640_controls,
146	.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
147	.dapm_widgets = tegra_rt5640_dapm_widgets,
148	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
149	.fully_routed = true,
150	};
151
152	static int tegra_rt5640_probe(struct platform_device *pdev)
153	{
154	struct device_node *np = pdev->dev.of_node;
155	struct snd_soc_card *card = &snd_soc_tegra_rt5640;
156	struct tegra_rt5640 *machine;
157	int ret;
158
159	machine = devm_kzalloc(&pdev->dev,
160	sizeof(struct tegra_rt5640), GFP_KERNEL);
161	if (!machine) {
162	dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
163	return -ENOMEM;
164	}
165
166	card->dev = &pdev->dev;
167	platform_set_drvdata(pdev, card);
168	snd_soc_card_set_drvdata(card, machine);
169
170	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
171	if (machine->gpio_hp_det == -EPROBE_DEFER)
172	return -EPROBE_DEFER;
173
174	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
175	if (ret)
176	goto err;
177
178	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
179	if (ret)
180	goto err;
181
182	tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
183	"nvidia,audio-codec", 0);
184	if (!tegra_rt5640_dai.codec_of_node) {
185	dev_err(&pdev->dev,
186	"Property 'nvidia,audio-codec' missing or invalid\n");
187	ret = -EINVAL;
188	goto err;
189	}
190
191	tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
192	"nvidia,i2s-controller", 0);
193	if (!tegra_rt5640_dai.cpu_of_node) {
194	dev_err(&pdev->dev,
195	"Property 'nvidia,i2s-controller' missing or invalid\n");
196	ret = -EINVAL;
197	goto err;
198	}
199
200	tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
201
202	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
203	if (ret)
204	goto err;
205
206	ret = snd_soc_register_card(card);
207	if (ret) {
208	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
209	ret);
210	goto err_fini_utils;
211	}
212
213	return 0;
214
215	err_fini_utils:
216	tegra_asoc_utils_fini(&machine->util_data);
217	err:
218	return ret;
219	}
220
221	static int tegra_rt5640_remove(struct platform_device *pdev)
222	{
223	struct snd_soc_card *card = platform_get_drvdata(pdev);
224	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
225
226	snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
227	&tegra_rt5640_hp_jack_gpio);
228
229	snd_soc_unregister_card(card);
230
231	tegra_asoc_utils_fini(&machine->util_data);
232
233	return 0;
234	}
235
236	static const struct of_device_id tegra_rt5640_of_match[] = {
237	{ .compatible = "nvidia,tegra-audio-rt5640", },
238	{},
239	};
240
241	static struct platform_driver tegra_rt5640_driver = {
242	.driver = {
243	.name = DRV_NAME,
244	.owner = THIS_MODULE,
245	.pm = &snd_soc_pm_ops,
246	.of_match_table = tegra_rt5640_of_match,
247	},
248	.probe = tegra_rt5640_probe,
249	.remove = tegra_rt5640_remove,
250	};
251	module_platform_driver(tegra_rt5640_driver);
252
253	MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
254	MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
255	MODULE_LICENSE("GPL v2");
256	MODULE_ALIAS("platform:" DRV_NAME);
257	MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);