1/*
  2* tegra_alc5632.c  --  Toshiba AC100(PAZ00) machine ASoC driver
  3 *
  4 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  5 * Copyright (C) 2012 - NVIDIA, Inc.
  6 *
  7 * Authors:  Leon Romanovsky <leon@leon.nu>
  8 *           Andrey Danin <danindrey@mail.ru>
  9 *           Marc Dietrich <marvin24@gmx.de>
 10 *
 11 * This program is free software; you can redistribute it and/or modify
 12 * it under the terms of the GNU General Public License version 2 as
 13 * published by the Free Software Foundation.
 14 */
 15
 16#include <linux/module.h>
 17#include <linux/platform_device.h>
 18#include <linux/slab.h>
 19#include <linux/gpio.h>
 20#include <linux/of_gpio.h>
 21
 22#include <sound/core.h>
 23#include <sound/jack.h>
 24#include <sound/pcm.h>
 25#include <sound/pcm_params.h>
 26#include <sound/soc.h>
 27
 28#include "../codecs/alc5632.h"
 29
 30#include "tegra_asoc_utils.h"
 31
 32#define DRV_NAME "tegra-alc5632"
 33
 34struct tegra_alc5632 {
 35	struct tegra_asoc_utils_data util_data;
 36	int gpio_hp_det;
 37};
 38
 39static int tegra_alc5632_asoc_hw_params(struct snd_pcm_substream *substream,
 40					struct snd_pcm_hw_params *params)
 41{
 42	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 43	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 44	struct snd_soc_card *card = rtd->card;
 45	struct tegra_alc5632 *alc5632 = snd_soc_card_get_drvdata(card);
 46	int srate, mclk;
 47	int err;
 48
 49	srate = params_rate(params);
 50	mclk = 512 * srate;
 51
 52	err = tegra_asoc_utils_set_rate(&alc5632->util_data, srate, mclk);
 53	if (err < 0) {
 54		dev_err(card->dev, "Can't configure clocks\n");
 55		return err;
 56	}
 57
 58	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 59					SND_SOC_CLOCK_IN);
 60	if (err < 0) {
 61		dev_err(card->dev, "codec_dai clock not set\n");
 62		return err;
 63	}
 64
 65	return 0;
 66}
 67
 68static const struct snd_soc_ops tegra_alc5632_asoc_ops = {
 69	.hw_params = tegra_alc5632_asoc_hw_params,
 70};
 71
 72static struct snd_soc_jack tegra_alc5632_hs_jack;
 73
 74static struct snd_soc_jack_pin tegra_alc5632_hs_jack_pins[] = {
 75	{
 76		.pin = "Headset Mic",
 77		.mask = SND_JACK_MICROPHONE,
 78	},
 79	{
 80		.pin = "Headset Stereophone",
 81		.mask = SND_JACK_HEADPHONE,
 82	},
 83};
 84
 85static struct snd_soc_jack_gpio tegra_alc5632_hp_jack_gpio = {
 86	.name = "Headset detection",
 87	.report = SND_JACK_HEADSET,
 88	.debounce_time = 150,
 89};
 90
 91static const struct snd_soc_dapm_widget tegra_alc5632_dapm_widgets[] = {
 92	SND_SOC_DAPM_SPK("Int Spk", NULL),
 93	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 94	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 95	SND_SOC_DAPM_MIC("Digital Mic", NULL),
 96};
 97
 98static const struct snd_kcontrol_new tegra_alc5632_controls[] = {
 99	SOC_DAPM_PIN_SWITCH("Int Spk"),
100};
101
102static int tegra_alc5632_asoc_init(struct snd_soc_pcm_runtime *rtd)
103{
104	int ret;
105	struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(rtd->card);
106
107	ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
108				    SND_JACK_HEADSET,
109				    &tegra_alc5632_hs_jack,
110				    tegra_alc5632_hs_jack_pins,
111				    ARRAY_SIZE(tegra_alc5632_hs_jack_pins));
112	if (ret)
113		return ret;
114
115	if (gpio_is_valid(machine->gpio_hp_det)) {
116		tegra_alc5632_hp_jack_gpio.gpio = machine->gpio_hp_det;
117		snd_soc_jack_add_gpios(&tegra_alc5632_hs_jack,
118						1,
119						&tegra_alc5632_hp_jack_gpio);
120	}
121
122	snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
123
124	return 0;
125}
126
127static int tegra_alc5632_card_remove(struct snd_soc_card *card)
128{
129	struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
130
131	if (gpio_is_valid(machine->gpio_hp_det)) {
132		snd_soc_jack_free_gpios(&tegra_alc5632_hs_jack, 1,
133					&tegra_alc5632_hp_jack_gpio);
134	}
135
136	return 0;
137}
138
139static struct snd_soc_dai_link tegra_alc5632_dai = {
140	.name = "ALC5632",
141	.stream_name = "ALC5632 PCM",
142	.codec_dai_name = "alc5632-hifi",
143	.init = tegra_alc5632_asoc_init,
144	.ops = &tegra_alc5632_asoc_ops,
145	.dai_fmt = SND_SOC_DAIFMT_I2S
146			   | SND_SOC_DAIFMT_NB_NF
147			   | SND_SOC_DAIFMT_CBS_CFS,
148};
149
150static struct snd_soc_card snd_soc_tegra_alc5632 = {
151	.name = "tegra-alc5632",
152	.owner = THIS_MODULE,
153	.remove = tegra_alc5632_card_remove,
154	.dai_link = &tegra_alc5632_dai,
155	.num_links = 1,
156	.controls = tegra_alc5632_controls,
157	.num_controls = ARRAY_SIZE(tegra_alc5632_controls),
158	.dapm_widgets = tegra_alc5632_dapm_widgets,
159	.num_dapm_widgets = ARRAY_SIZE(tegra_alc5632_dapm_widgets),
160	.fully_routed = true,
161};
162
163static int tegra_alc5632_probe(struct platform_device *pdev)
164{
165	struct device_node *np = pdev->dev.of_node;
166	struct snd_soc_card *card = &snd_soc_tegra_alc5632;
167	struct tegra_alc5632 *alc5632;
168	int ret;
169
170	alc5632 = devm_kzalloc(&pdev->dev,
171			sizeof(struct tegra_alc5632), GFP_KERNEL);
172	if (!alc5632) {
173		dev_err(&pdev->dev, "Can't allocate tegra_alc5632\n");
174		return -ENOMEM;
175	}
176
177	card->dev = &pdev->dev;
178	platform_set_drvdata(pdev, card);
179	snd_soc_card_set_drvdata(card, alc5632);
180
181	alc5632->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
182	if (alc5632->gpio_hp_det == -EPROBE_DEFER)
183		return -EPROBE_DEFER;
184
185	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
186	if (ret)
187		goto err;
188
189	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
190	if (ret)
191		goto err;
192
193	tegra_alc5632_dai.codec_of_node = of_parse_phandle(
194			pdev->dev.of_node, "nvidia,audio-codec", 0);
195
196	if (!tegra_alc5632_dai.codec_of_node) {
197		dev_err(&pdev->dev,
198			"Property 'nvidia,audio-codec' missing or invalid\n");
199		ret = -EINVAL;
200		goto err;
201	}
202
203	tegra_alc5632_dai.cpu_of_node = of_parse_phandle(np,
204			"nvidia,i2s-controller", 0);
205	if (!tegra_alc5632_dai.cpu_of_node) {
206		dev_err(&pdev->dev,
207			"Property 'nvidia,i2s-controller' missing or invalid\n");
208		ret = -EINVAL;
209		goto err;
210	}
211
212	tegra_alc5632_dai.platform_of_node = tegra_alc5632_dai.cpu_of_node;
213
214	ret = tegra_asoc_utils_init(&alc5632->util_data, &pdev->dev);
215	if (ret)
216		goto err;
217
218	ret = snd_soc_register_card(card);
219	if (ret) {
220		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
221			ret);
222		goto err_fini_utils;
223	}
224
225	return 0;
226
227err_fini_utils:
228	tegra_asoc_utils_fini(&alc5632->util_data);
229err:
230	return ret;
231}
232
233static int tegra_alc5632_remove(struct platform_device *pdev)
234{
235	struct snd_soc_card *card = platform_get_drvdata(pdev);
236	struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
237
238	snd_soc_unregister_card(card);
239
240	tegra_asoc_utils_fini(&machine->util_data);
241
242	return 0;
243}
244
245static const struct of_device_id tegra_alc5632_of_match[] = {
246	{ .compatible = "nvidia,tegra-audio-alc5632", },
247	{},
248};
249
250static struct platform_driver tegra_alc5632_driver = {
251	.driver = {
252		.name = DRV_NAME,
253		.pm = &snd_soc_pm_ops,
254		.of_match_table = tegra_alc5632_of_match,
255	},
256	.probe = tegra_alc5632_probe,
257	.remove = tegra_alc5632_remove,
258};
259module_platform_driver(tegra_alc5632_driver);
260
261MODULE_AUTHOR("Leon Romanovsky <leon@leon.nu>");
262MODULE_DESCRIPTION("Tegra+ALC5632 machine ASoC driver");
263MODULE_LICENSE("GPL");
264MODULE_ALIAS("platform:" DRV_NAME);
265MODULE_DEVICE_TABLE(of, tegra_alc5632_of_match);