[deliverable/linux.git] / sound / soc / tegra / tegra_wm8903.c

/*
 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
 *
 * Author: Stephen Warren <swarren@nvidia.com>
 * Copyright (C) 2010-2012 - NVIDIA, Inc.
 *
 * Based on code copyright/by:
 *
 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 *
 * Copyright 2007 Wolfson Microelectronics PLC.
 * Author: Graeme Gregory
 *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <asm/mach-types.h>

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

#include <mach/tegra_wm8903_pdata.h>

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

#include "../codecs/wm8903.h"

#include "tegra_asoc_utils.h"

#define DRV_NAME "tegra-snd-wm8903"

#define GPIO_SPKR_EN    BIT(0)
#define GPIO_HP_MUTE    BIT(1)
#define GPIO_INT_MIC_EN BIT(2)
#define GPIO_EXT_MIC_EN BIT(3)
#define GPIO_HP_DET     BIT(4)

struct tegra_wm8903 {
	struct tegra_wm8903_platform_data pdata;
	struct tegra_asoc_utils_data util_data;
	int gpio_requested;
};

static int tegra_wm8903_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;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_card *card = codec->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	int srate, mclk;
	int err;

	srate = params_rate(params);
	switch (srate) {
	case 64000:
	case 88200:
	case 96000:
		mclk = 128 * srate;
		break;
	default:
		mclk = 256 * srate;
		break;
	}
	/* FIXME: Codec only requires >= 3MHz if OSR==0 */
	while (mclk < 6000000)
		mclk *= 2;

	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_fmt(codec_dai,
					SND_SOC_DAIFMT_I2S |
					SND_SOC_DAIFMT_NB_NF |
					SND_SOC_DAIFMT_CBS_CFS);
	if (err < 0) {
		dev_err(card->dev, "codec_dai fmt not set\n");
		return err;
	}

	err = snd_soc_dai_set_fmt(cpu_dai,
					SND_SOC_DAIFMT_I2S |
					SND_SOC_DAIFMT_NB_NF |
					SND_SOC_DAIFMT_CBS_CFS);
	if (err < 0) {
		dev_err(card->dev, "cpu_dai fmt not set\n");
		return err;
	}

	err = snd_soc_dai_set_sysclk(codec_dai, 0, 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_wm8903_ops = {
	.hw_params = tegra_wm8903_hw_params,
};

static struct snd_soc_jack tegra_wm8903_hp_jack;

static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
	{
		.pin = "Headphone Jack",
		.mask = SND_JACK_HEADPHONE,
	},
};

static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
	.name = "headphone detect",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 150,
	.invert = 1,
};

static struct snd_soc_jack tegra_wm8903_mic_jack;

static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
	{
		.pin = "Mic Jack",
		.mask = SND_JACK_MICROPHONE,
	},
};

static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
					struct snd_kcontrol *k, int event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	struct tegra_wm8903_platform_data *pdata = &machine->pdata;

	if (!(machine->gpio_requested & GPIO_SPKR_EN))
		return 0;

	gpio_set_value_cansleep(pdata->gpio_spkr_en,
				SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
					struct snd_kcontrol *k, int event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	struct tegra_wm8903_platform_data *pdata = &machine->pdata;

	if (!(machine->gpio_requested & GPIO_HP_MUTE))
		return 0;

	gpio_set_value_cansleep(pdata->gpio_hp_mute,
				!SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
	SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
	SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
};

static const struct snd_soc_dapm_route harmony_audio_map[] = {
	{"Headphone Jack", NULL, "HPOUTR"},
	{"Headphone Jack", NULL, "HPOUTL"},
	{"Int Spk", NULL, "ROP"},
	{"Int Spk", NULL, "RON"},
	{"Int Spk", NULL, "LOP"},
	{"Int Spk", NULL, "LON"},
	{"Mic Jack", NULL, "MICBIAS"},
	{"IN1L", NULL, "Mic Jack"},
};

static const struct snd_soc_dapm_route seaboard_audio_map[] = {
	{"Headphone Jack", NULL, "HPOUTR"},
	{"Headphone Jack", NULL, "HPOUTL"},
	{"Int Spk", NULL, "ROP"},
	{"Int Spk", NULL, "RON"},
	{"Int Spk", NULL, "LOP"},
	{"Int Spk", NULL, "LON"},
	{"Mic Jack", NULL, "MICBIAS"},
	{"IN1R", NULL, "Mic Jack"},
};

static const struct snd_soc_dapm_route kaen_audio_map[] = {
	{"Headphone Jack", NULL, "HPOUTR"},
	{"Headphone Jack", NULL, "HPOUTL"},
	{"Int Spk", NULL, "ROP"},
	{"Int Spk", NULL, "RON"},
	{"Int Spk", NULL, "LOP"},
	{"Int Spk", NULL, "LON"},
	{"Mic Jack", NULL, "MICBIAS"},
	{"IN2R", NULL, "Mic Jack"},
};

static const struct snd_soc_dapm_route aebl_audio_map[] = {
	{"Headphone Jack", NULL, "HPOUTR"},
	{"Headphone Jack", NULL, "HPOUTL"},
	{"Int Spk", NULL, "LINEOUTR"},
	{"Int Spk", NULL, "LINEOUTL"},
	{"Mic Jack", NULL, "MICBIAS"},
	{"IN1R", NULL, "Mic Jack"},
};

static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
	SOC_DAPM_PIN_SWITCH("Int Spk"),
};

static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	struct snd_soc_card *card = codec->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	struct tegra_wm8903_platform_data *pdata = &machine->pdata;

	if (gpio_is_valid(pdata->gpio_hp_det)) {
		tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
		snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
				&tegra_wm8903_hp_jack);
		snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
					ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
					tegra_wm8903_hp_jack_pins);
		snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
					1,
					&tegra_wm8903_hp_jack_gpio);
		machine->gpio_requested |= GPIO_HP_DET;
	}

	snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
			 &tegra_wm8903_mic_jack);
	snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
			      ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
			      tegra_wm8903_mic_jack_pins);
	wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
				0);

	snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");

	return 0;
}

static struct snd_soc_dai_link tegra_wm8903_dai = {
	.name = "WM8903",
	.stream_name = "WM8903 PCM",
	.codec_name = "wm8903.0-001a",
	.platform_name = "tegra20-i2s.0",
	.cpu_dai_name = "tegra20-i2s.0",
	.codec_dai_name = "wm8903-hifi",
	.init = tegra_wm8903_init,
	.ops = &tegra_wm8903_ops,
};

static struct snd_soc_card snd_soc_tegra_wm8903 = {
	.name = "tegra-wm8903",
	.owner = THIS_MODULE,
	.dai_link = &tegra_wm8903_dai,
	.num_links = 1,

	.controls = tegra_wm8903_controls,
	.num_controls = ARRAY_SIZE(tegra_wm8903_controls),
	.dapm_widgets = tegra_wm8903_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
	.fully_routed = true,
};

static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &snd_soc_tegra_wm8903;
	struct tegra_wm8903 *machine;
	struct tegra_wm8903_platform_data *pdata;
	int ret;

	if (!pdev->dev.platform_data && !pdev->dev.of_node) {
		dev_err(&pdev->dev, "No platform data supplied\n");
		return -EINVAL;
	}

	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
			       GFP_KERNEL);
	if (!machine) {
		dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
		ret = -ENOMEM;
		goto err;
	}
	pdata = &machine->pdata;

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

	if (pdev->dev.platform_data) {
		memcpy(pdata, card->dev->platform_data, sizeof(*pdata));
	} else if (np) {
		pdata->gpio_spkr_en = of_get_named_gpio(np,
						"nvidia,spkr-en-gpios", 0);
		if (pdata->gpio_spkr_en == -ENODEV)
			return -EPROBE_DEFER;

		pdata->gpio_hp_mute = of_get_named_gpio(np,
						"nvidia,hp-mute-gpios", 0);
		if (pdata->gpio_hp_mute == -ENODEV)
			return -EPROBE_DEFER;

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

		pdata->gpio_int_mic_en = of_get_named_gpio(np,
						"nvidia,int-mic-en-gpios", 0);
		if (pdata->gpio_int_mic_en == -ENODEV)
			return -EPROBE_DEFER;

		pdata->gpio_ext_mic_en = of_get_named_gpio(np,
						"nvidia,ext-mic-en-gpios", 0);
		if (pdata->gpio_ext_mic_en == -ENODEV)
			return -EPROBE_DEFER;
	}

	if (np) {
		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_wm8903_dai.codec_name = NULL;
		tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
				"nvidia,audio-codec", 0);
		if (!tegra_wm8903_dai.codec_of_node) {
			dev_err(&pdev->dev,
				"Property 'nvidia,audio-codec' missing or invalid\n");
			ret = -EINVAL;
			goto err;
		}

		tegra_wm8903_dai.cpu_dai_name = NULL;
		tegra_wm8903_dai.cpu_dai_of_node = of_parse_phandle(np,
				"nvidia,i2s-controller", 0);
		if (!tegra_wm8903_dai.cpu_dai_of_node) {
			dev_err(&pdev->dev,
				"Property 'nvidia,i2s-controller' missing or invalid\n");
			ret = -EINVAL;
			goto err;
		}

		tegra_wm8903_dai.platform_name = NULL;
		tegra_wm8903_dai.platform_of_node =
					tegra_wm8903_dai.cpu_dai_of_node;
	} else {
		if (machine_is_harmony()) {
			card->dapm_routes = harmony_audio_map;
			card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
		} else if (machine_is_seaboard()) {
			card->dapm_routes = seaboard_audio_map;
			card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
		} else if (machine_is_kaen()) {
			card->dapm_routes = kaen_audio_map;
			card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
		} else {
			card->dapm_routes = aebl_audio_map;
			card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
		}
	}

	if (gpio_is_valid(pdata->gpio_spkr_en)) {
		ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
		if (ret) {
			dev_err(card->dev, "cannot get spkr_en gpio\n");
			return ret;
		}
		machine->gpio_requested |= GPIO_SPKR_EN;

		gpio_direction_output(pdata->gpio_spkr_en, 0);
	}

	if (gpio_is_valid(pdata->gpio_hp_mute)) {
		ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
		if (ret) {
			dev_err(card->dev, "cannot get hp_mute gpio\n");
			return ret;
		}
		machine->gpio_requested |= GPIO_HP_MUTE;

		gpio_direction_output(pdata->gpio_hp_mute, 1);
	}

	if (gpio_is_valid(pdata->gpio_int_mic_en)) {
		ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
		if (ret) {
			dev_err(card->dev, "cannot get int_mic_en gpio\n");
			return ret;
		}
		machine->gpio_requested |= GPIO_INT_MIC_EN;

		/* Disable int mic; enable signal is active-high */
		gpio_direction_output(pdata->gpio_int_mic_en, 0);
	}

	if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
		ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
		if (ret) {
			dev_err(card->dev, "cannot get ext_mic_en gpio\n");
			return ret;
		}
		machine->gpio_requested |= GPIO_EXT_MIC_EN;

		/* Enable ext mic; enable signal is active-low */
		gpio_direction_output(pdata->gpio_ext_mic_en, 0);
	}

	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 __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	struct tegra_wm8903_platform_data *pdata = &machine->pdata;

	if (machine->gpio_requested & GPIO_HP_DET)
		snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack,
					1,
					&tegra_wm8903_hp_jack_gpio);
	if (machine->gpio_requested & GPIO_EXT_MIC_EN)
		gpio_free(pdata->gpio_ext_mic_en);
	if (machine->gpio_requested & GPIO_INT_MIC_EN)
		gpio_free(pdata->gpio_int_mic_en);
	if (machine->gpio_requested & GPIO_HP_MUTE)
		gpio_free(pdata->gpio_hp_mute);
	if (machine->gpio_requested & GPIO_SPKR_EN)
		gpio_free(pdata->gpio_spkr_en);
	machine->gpio_requested = 0;

	snd_soc_unregister_card(card);

	tegra_asoc_utils_fini(&machine->util_data);

	return 0;
}

static const struct of_device_id tegra_wm8903_of_match[] __devinitconst = {
	{ .compatible = "nvidia,tegra-audio-wm8903", },
	{},
};

static struct platform_driver tegra_wm8903_driver = {
	.driver = {
		.name = DRV_NAME,
		.owner = THIS_MODULE,
		.pm = &snd_soc_pm_ops,
		.of_match_table = tegra_wm8903_of_match,
	},
	.probe = tegra_wm8903_driver_probe,
	.remove = __devexit_p(tegra_wm8903_driver_remove),
};
module_platform_driver(tegra_wm8903_driver);

MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);
Commit	Line	Data
	1	/*
	2	* tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
	3	*
	4	* Author: Stephen Warren <swarren@nvidia.com>
	5	* Copyright (C) 2010-2012 - NVIDIA, Inc.
	6	*
	7	* Based on code copyright/by:
	8	*
	9	* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
	10	*
	11	* Copyright 2007 Wolfson Microelectronics PLC.
	12	* Author: Graeme Gregory
	13	* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License
	17	* version 2 as published by the Free Software Foundation.
	18	*
	19	* This program is distributed in the hope that it will be useful, but
	20	* WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	22	* General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	27	* 02110-1301 USA
	28	*
	29	*/
	30
	31	#include <asm/mach-types.h>
	32
	33	#include <linux/module.h>
	34	#include <linux/platform_device.h>
	35	#include <linux/slab.h>
	36	#include <linux/gpio.h>
	37	#include <linux/of_gpio.h>
	38
	39	#include <mach/tegra_wm8903_pdata.h>
	40
	41	#include <sound/core.h>
	42	#include <sound/jack.h>
	43	#include <sound/pcm.h>
	44	#include <sound/pcm_params.h>
	45	#include <sound/soc.h>
	46
	47	#include "../codecs/wm8903.h"
	48
	49	#include "tegra_asoc_utils.h"
	50
	51	#define DRV_NAME "tegra-snd-wm8903"
	52
	53	#define GPIO_SPKR_EN BIT(0)
	54	#define GPIO_HP_MUTE BIT(1)
	55	#define GPIO_INT_MIC_EN BIT(2)
	56	#define GPIO_EXT_MIC_EN BIT(3)
	57	#define GPIO_HP_DET BIT(4)
	58
	59	struct tegra_wm8903 {
	60	struct tegra_wm8903_platform_data pdata;
	61	struct tegra_asoc_utils_data util_data;
	62	int gpio_requested;
	63	};
	64
	65	static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
	66	struct snd_pcm_hw_params *params)
	67	{
	68	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	69	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	70	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	71	struct snd_soc_codec *codec = rtd->codec;
	72	struct snd_soc_card *card = codec->card;
	73	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	74	int srate, mclk;
	75	int err;
	76
	77	srate = params_rate(params);
	78	switch (srate) {
	79	case 64000:
	80	case 88200:
	81	case 96000:
	82	mclk = 128 * srate;
	83	break;
	84	default:
	85	mclk = 256 * srate;
	86	break;
	87	}
	88	/* FIXME: Codec only requires >= 3MHz if OSR==0 */
	89	while (mclk < 6000000)
	90	mclk *= 2;
	91
	92	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	93	if (err < 0) {
	94	dev_err(card->dev, "Can't configure clocks\n");
	95	return err;
	96	}
	97
	98	err = snd_soc_dai_set_fmt(codec_dai,
	99	SND_SOC_DAIFMT_I2S \|
	100	SND_SOC_DAIFMT_NB_NF \|
	101	SND_SOC_DAIFMT_CBS_CFS);
	102	if (err < 0) {
	103	dev_err(card->dev, "codec_dai fmt not set\n");
	104	return err;
	105	}
	106
	107	err = snd_soc_dai_set_fmt(cpu_dai,
	108	SND_SOC_DAIFMT_I2S \|
	109	SND_SOC_DAIFMT_NB_NF \|
	110	SND_SOC_DAIFMT_CBS_CFS);
	111	if (err < 0) {
	112	dev_err(card->dev, "cpu_dai fmt not set\n");
	113	return err;
	114	}
	115
	116	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
	117	SND_SOC_CLOCK_IN);
	118	if (err < 0) {
	119	dev_err(card->dev, "codec_dai clock not set\n");
	120	return err;
	121	}
	122
	123	return 0;
	124	}
	125
	126	static struct snd_soc_ops tegra_wm8903_ops = {
	127	.hw_params = tegra_wm8903_hw_params,
	128	};
	129
	130	static struct snd_soc_jack tegra_wm8903_hp_jack;
	131
	132	static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
	133	{
	134	.pin = "Headphone Jack",
	135	.mask = SND_JACK_HEADPHONE,
	136	},
	137	};
	138
	139	static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
	140	.name = "headphone detect",
	141	.report = SND_JACK_HEADPHONE,
	142	.debounce_time = 150,
	143	.invert = 1,
	144	};
	145
	146	static struct snd_soc_jack tegra_wm8903_mic_jack;
	147
	148	static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
	149	{
	150	.pin = "Mic Jack",
	151	.mask = SND_JACK_MICROPHONE,
	152	},
	153	};
	154
	155	static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
	156	struct snd_kcontrol *k, int event)
	157	{
	158	struct snd_soc_dapm_context *dapm = w->dapm;
	159	struct snd_soc_card *card = dapm->card;
	160	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	161	struct tegra_wm8903_platform_data *pdata = &machine->pdata;
	162
	163	if (!(machine->gpio_requested & GPIO_SPKR_EN))
	164	return 0;
	165
	166	gpio_set_value_cansleep(pdata->gpio_spkr_en,
	167	SND_SOC_DAPM_EVENT_ON(event));
	168
	169	return 0;
	170	}
	171
	172	static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
	173	struct snd_kcontrol *k, int event)
	174	{
	175	struct snd_soc_dapm_context *dapm = w->dapm;
	176	struct snd_soc_card *card = dapm->card;
	177	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	178	struct tegra_wm8903_platform_data *pdata = &machine->pdata;
	179
	180	if (!(machine->gpio_requested & GPIO_HP_MUTE))
	181	return 0;
	182
	183	gpio_set_value_cansleep(pdata->gpio_hp_mute,
	184	!SND_SOC_DAPM_EVENT_ON(event));
	185
	186	return 0;
	187	}
	188
	189	static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
	190	SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
	191	SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
	192	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	193	};
	194
	195	static const struct snd_soc_dapm_route harmony_audio_map[] = {
	196	{"Headphone Jack", NULL, "HPOUTR"},
	197	{"Headphone Jack", NULL, "HPOUTL"},
	198	{"Int Spk", NULL, "ROP"},
	199	{"Int Spk", NULL, "RON"},
	200	{"Int Spk", NULL, "LOP"},
	201	{"Int Spk", NULL, "LON"},
	202	{"Mic Jack", NULL, "MICBIAS"},
	203	{"IN1L", NULL, "Mic Jack"},
	204	};
	205
	206	static const struct snd_soc_dapm_route seaboard_audio_map[] = {
	207	{"Headphone Jack", NULL, "HPOUTR"},
	208	{"Headphone Jack", NULL, "HPOUTL"},
	209	{"Int Spk", NULL, "ROP"},
	210	{"Int Spk", NULL, "RON"},
	211	{"Int Spk", NULL, "LOP"},
	212	{"Int Spk", NULL, "LON"},
	213	{"Mic Jack", NULL, "MICBIAS"},
	214	{"IN1R", NULL, "Mic Jack"},
	215	};
	216
	217	static const struct snd_soc_dapm_route kaen_audio_map[] = {
	218	{"Headphone Jack", NULL, "HPOUTR"},
	219	{"Headphone Jack", NULL, "HPOUTL"},
	220	{"Int Spk", NULL, "ROP"},
	221	{"Int Spk", NULL, "RON"},
	222	{"Int Spk", NULL, "LOP"},
	223	{"Int Spk", NULL, "LON"},
	224	{"Mic Jack", NULL, "MICBIAS"},
	225	{"IN2R", NULL, "Mic Jack"},
	226	};
	227
	228	static const struct snd_soc_dapm_route aebl_audio_map[] = {
	229	{"Headphone Jack", NULL, "HPOUTR"},
	230	{"Headphone Jack", NULL, "HPOUTL"},
	231	{"Int Spk", NULL, "LINEOUTR"},
	232	{"Int Spk", NULL, "LINEOUTL"},
	233	{"Mic Jack", NULL, "MICBIAS"},
	234	{"IN1R", NULL, "Mic Jack"},
	235	};
	236
	237	static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
	238	SOC_DAPM_PIN_SWITCH("Int Spk"),
	239	};
	240
	241	static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
	242	{
	243	struct snd_soc_codec *codec = rtd->codec;
	244	struct snd_soc_dapm_context *dapm = &codec->dapm;
	245	struct snd_soc_card *card = codec->card;
	246	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	247	struct tegra_wm8903_platform_data *pdata = &machine->pdata;
	248
	249	if (gpio_is_valid(pdata->gpio_hp_det)) {
	250	tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
	251	snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
	252	&tegra_wm8903_hp_jack);
	253	snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
	254	ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
	255	tegra_wm8903_hp_jack_pins);
	256	snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
	257	1,
	258	&tegra_wm8903_hp_jack_gpio);
	259	machine->gpio_requested \|= GPIO_HP_DET;
	260	}
	261
	262	snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
	263	&tegra_wm8903_mic_jack);
	264	snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
	265	ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
	266	tegra_wm8903_mic_jack_pins);
	267	wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
	268	0);
	269
	270	snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
	271
	272	return 0;
	273	}
	274
	275	static struct snd_soc_dai_link tegra_wm8903_dai = {
	276	.name = "WM8903",
	277	.stream_name = "WM8903 PCM",
	278	.codec_name = "wm8903.0-001a",
	279	.platform_name = "tegra20-i2s.0",
	280	.cpu_dai_name = "tegra20-i2s.0",
	281	.codec_dai_name = "wm8903-hifi",
	282	.init = tegra_wm8903_init,
	283	.ops = &tegra_wm8903_ops,
	284	};
	285
	286	static struct snd_soc_card snd_soc_tegra_wm8903 = {
	287	.name = "tegra-wm8903",
	288	.owner = THIS_MODULE,
	289	.dai_link = &tegra_wm8903_dai,
	290	.num_links = 1,
	291
	292	.controls = tegra_wm8903_controls,
	293	.num_controls = ARRAY_SIZE(tegra_wm8903_controls),
	294	.dapm_widgets = tegra_wm8903_dapm_widgets,
	295	.num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
	296	.fully_routed = true,
	297	};
	298
	299	static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
	300	{
	301	struct device_node *np = pdev->dev.of_node;
	302	struct snd_soc_card *card = &snd_soc_tegra_wm8903;
	303	struct tegra_wm8903 *machine;
	304	struct tegra_wm8903_platform_data *pdata;
	305	int ret;
	306
	307	if (!pdev->dev.platform_data && !pdev->dev.of_node) {
	308	dev_err(&pdev->dev, "No platform data supplied\n");
	309	return -EINVAL;
	310	}
	311
	312	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
	313	GFP_KERNEL);
	314	if (!machine) {
	315	dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
	316	ret = -ENOMEM;
	317	goto err;
	318	}
	319	pdata = &machine->pdata;
	320
	321	card->dev = &pdev->dev;
	322	platform_set_drvdata(pdev, card);
	323	snd_soc_card_set_drvdata(card, machine);
	324
	325	if (pdev->dev.platform_data) {
	326	memcpy(pdata, card->dev->platform_data, sizeof(*pdata));
	327	} else if (np) {
	328	pdata->gpio_spkr_en = of_get_named_gpio(np,
	329	"nvidia,spkr-en-gpios", 0);
	330	if (pdata->gpio_spkr_en == -ENODEV)
	331	return -EPROBE_DEFER;
	332
	333	pdata->gpio_hp_mute = of_get_named_gpio(np,
	334	"nvidia,hp-mute-gpios", 0);
	335	if (pdata->gpio_hp_mute == -ENODEV)
	336	return -EPROBE_DEFER;
	337
	338	pdata->gpio_hp_det = of_get_named_gpio(np,
	339	"nvidia,hp-det-gpios", 0);
	340	if (pdata->gpio_hp_det == -ENODEV)
	341	return -EPROBE_DEFER;
	342
	343	pdata->gpio_int_mic_en = of_get_named_gpio(np,
	344	"nvidia,int-mic-en-gpios", 0);
	345	if (pdata->gpio_int_mic_en == -ENODEV)
	346	return -EPROBE_DEFER;
	347
	348	pdata->gpio_ext_mic_en = of_get_named_gpio(np,
	349	"nvidia,ext-mic-en-gpios", 0);
	350	if (pdata->gpio_ext_mic_en == -ENODEV)
	351	return -EPROBE_DEFER;
	352	}
	353
	354	if (np) {
	355	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	356	if (ret)
	357	goto err;
	358
	359	ret = snd_soc_of_parse_audio_routing(card,
	360	"nvidia,audio-routing");
	361	if (ret)
	362	goto err;
	363
	364	tegra_wm8903_dai.codec_name = NULL;
	365	tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
	366	"nvidia,audio-codec", 0);
	367	if (!tegra_wm8903_dai.codec_of_node) {
	368	dev_err(&pdev->dev,
	369	"Property 'nvidia,audio-codec' missing or invalid\n");
	370	ret = -EINVAL;
	371	goto err;
	372	}
	373
	374	tegra_wm8903_dai.cpu_dai_name = NULL;
	375	tegra_wm8903_dai.cpu_dai_of_node = of_parse_phandle(np,
	376	"nvidia,i2s-controller", 0);
	377	if (!tegra_wm8903_dai.cpu_dai_of_node) {
	378	dev_err(&pdev->dev,
	379	"Property 'nvidia,i2s-controller' missing or invalid\n");
	380	ret = -EINVAL;
	381	goto err;
	382	}
	383
	384	tegra_wm8903_dai.platform_name = NULL;
	385	tegra_wm8903_dai.platform_of_node =
	386	tegra_wm8903_dai.cpu_dai_of_node;
	387	} else {
	388	if (machine_is_harmony()) {
	389	card->dapm_routes = harmony_audio_map;
	390	card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
	391	} else if (machine_is_seaboard()) {
	392	card->dapm_routes = seaboard_audio_map;
	393	card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
	394	} else if (machine_is_kaen()) {
	395	card->dapm_routes = kaen_audio_map;
	396	card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
	397	} else {
	398	card->dapm_routes = aebl_audio_map;
	399	card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
	400	}
	401	}
	402
	403	if (gpio_is_valid(pdata->gpio_spkr_en)) {
	404	ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
	405	if (ret) {
	406	dev_err(card->dev, "cannot get spkr_en gpio\n");
	407	return ret;
	408	}
	409	machine->gpio_requested \|= GPIO_SPKR_EN;
	410
	411	gpio_direction_output(pdata->gpio_spkr_en, 0);
	412	}
	413
	414	if (gpio_is_valid(pdata->gpio_hp_mute)) {
	415	ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
	416	if (ret) {
	417	dev_err(card->dev, "cannot get hp_mute gpio\n");
	418	return ret;
	419	}
	420	machine->gpio_requested \|= GPIO_HP_MUTE;
	421
	422	gpio_direction_output(pdata->gpio_hp_mute, 1);
	423	}
	424
	425	if (gpio_is_valid(pdata->gpio_int_mic_en)) {
	426	ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
	427	if (ret) {
	428	dev_err(card->dev, "cannot get int_mic_en gpio\n");
	429	return ret;
	430	}
	431	machine->gpio_requested \|= GPIO_INT_MIC_EN;
	432
	433	/* Disable int mic; enable signal is active-high */
	434	gpio_direction_output(pdata->gpio_int_mic_en, 0);
	435	}
	436
	437	if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
	438	ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
	439	if (ret) {
	440	dev_err(card->dev, "cannot get ext_mic_en gpio\n");
	441	return ret;
	442	}
	443	machine->gpio_requested \|= GPIO_EXT_MIC_EN;
	444
	445	/* Enable ext mic; enable signal is active-low */
	446	gpio_direction_output(pdata->gpio_ext_mic_en, 0);
	447	}
	448
	449	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	450	if (ret)
	451	goto err;
	452
	453	ret = snd_soc_register_card(card);
	454	if (ret) {
	455	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
	456	ret);
	457	goto err_fini_utils;
	458	}
	459
	460	return 0;
	461
	462	err_fini_utils:
	463	tegra_asoc_utils_fini(&machine->util_data);
	464	err:
	465	return ret;
	466	}
	467
	468	static int __devexit tegra_wm8903_driver_remove(struct platform_device *pdev)
	469	{
	470	struct snd_soc_card *card = platform_get_drvdata(pdev);
	471	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	472	struct tegra_wm8903_platform_data *pdata = &machine->pdata;
	473
	474	if (machine->gpio_requested & GPIO_HP_DET)
	475	snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack,
	476	1,
	477	&tegra_wm8903_hp_jack_gpio);
	478	if (machine->gpio_requested & GPIO_EXT_MIC_EN)
	479	gpio_free(pdata->gpio_ext_mic_en);
	480	if (machine->gpio_requested & GPIO_INT_MIC_EN)
	481	gpio_free(pdata->gpio_int_mic_en);
	482	if (machine->gpio_requested & GPIO_HP_MUTE)
	483	gpio_free(pdata->gpio_hp_mute);
	484	if (machine->gpio_requested & GPIO_SPKR_EN)
	485	gpio_free(pdata->gpio_spkr_en);
	486	machine->gpio_requested = 0;
	487
	488	snd_soc_unregister_card(card);
	489
	490	tegra_asoc_utils_fini(&machine->util_data);
	491
	492	return 0;
	493	}
	494
	495	static const struct of_device_id tegra_wm8903_of_match[] __devinitconst = {
	496	{ .compatible = "nvidia,tegra-audio-wm8903", },
	497	{},
	498	};
	499
	500	static struct platform_driver tegra_wm8903_driver = {
	501	.driver = {
	502	.name = DRV_NAME,
	503	.owner = THIS_MODULE,
	504	.pm = &snd_soc_pm_ops,
	505	.of_match_table = tegra_wm8903_of_match,
	506	},
	507	.probe = tegra_wm8903_driver_probe,
	508	.remove = __devexit_p(tegra_wm8903_driver_remove),
	509	};
	510	module_platform_driver(tegra_wm8903_driver);
	511
	512	MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
	513	MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
	514	MODULE_LICENSE("GPL");
	515	MODULE_ALIAS("platform:" DRV_NAME);
	516	MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);