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 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	struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(rtd->card);
105
106	snd_soc_card_jack_new(rtd->card, "Headset Jack", SND_JACK_HEADSET,
107			      &tegra_alc5632_hs_jack,
108			      tegra_alc5632_hs_jack_pins,
109			      ARRAY_SIZE(tegra_alc5632_hs_jack_pins));
110
111	if (gpio_is_valid(machine->gpio_hp_det)) {
112		tegra_alc5632_hp_jack_gpio.gpio = machine->gpio_hp_det;
113		snd_soc_jack_add_gpios(&tegra_alc5632_hs_jack,
114						1,
115						&tegra_alc5632_hp_jack_gpio);
116	}
117
118	snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
119
120	return 0;
121}
122
123static int tegra_alc5632_card_remove(struct snd_soc_card *card)
124{
125	struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
126
127	if (gpio_is_valid(machine->gpio_hp_det)) {
128		snd_soc_jack_free_gpios(&tegra_alc5632_hs_jack, 1,
129					&tegra_alc5632_hp_jack_gpio);
130	}
131
132	return 0;
133}
134
135static struct snd_soc_dai_link tegra_alc5632_dai = {
136	.name = "ALC5632",
137	.stream_name = "ALC5632 PCM",
138	.codec_dai_name = "alc5632-hifi",
139	.init = tegra_alc5632_asoc_init,
140	.ops = &tegra_alc5632_asoc_ops,
141	.dai_fmt = SND_SOC_DAIFMT_I2S
142			   | SND_SOC_DAIFMT_NB_NF
143			   | SND_SOC_DAIFMT_CBS_CFS,
144};
145
146static struct snd_soc_card snd_soc_tegra_alc5632 = {
147	.name = "tegra-alc5632",
148	.owner = THIS_MODULE,
149	.remove = tegra_alc5632_card_remove,
150	.dai_link = &tegra_alc5632_dai,
151	.num_links = 1,
152	.controls = tegra_alc5632_controls,
153	.num_controls = ARRAY_SIZE(tegra_alc5632_controls),
154	.dapm_widgets = tegra_alc5632_dapm_widgets,
155	.num_dapm_widgets = ARRAY_SIZE(tegra_alc5632_dapm_widgets),
156	.fully_routed = true,
157};
158
159static int tegra_alc5632_probe(struct platform_device *pdev)
160{
161	struct device_node *np = pdev->dev.of_node;
162	struct snd_soc_card *card = &snd_soc_tegra_alc5632;
163	struct tegra_alc5632 *alc5632;
164	int ret;
165
166	alc5632 = devm_kzalloc(&pdev->dev,
167			sizeof(struct tegra_alc5632), GFP_KERNEL);
168	if (!alc5632) {
169		dev_err(&pdev->dev, "Can't allocate tegra_alc5632\n");
170		return -ENOMEM;
171	}
172
173	card->dev = &pdev->dev;
174	platform_set_drvdata(pdev, card);
175	snd_soc_card_set_drvdata(card, alc5632);
176
177	alc5632->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
178	if (alc5632->gpio_hp_det == -EPROBE_DEFER)
179		return -EPROBE_DEFER;
180
181	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
182	if (ret)
183		goto err;
184
185	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
186	if (ret)
187		goto err;
188
189	tegra_alc5632_dai.codec_of_node = of_parse_phandle(
190			pdev->dev.of_node, "nvidia,audio-codec", 0);
191
192	if (!tegra_alc5632_dai.codec_of_node) {
193		dev_err(&pdev->dev,
194			"Property 'nvidia,audio-codec' missing or invalid\n");
195		ret = -EINVAL;
196		goto err;
197	}
198
199	tegra_alc5632_dai.cpu_of_node = of_parse_phandle(np,
200			"nvidia,i2s-controller", 0);
201	if (!tegra_alc5632_dai.cpu_of_node) {
202		dev_err(&pdev->dev,
203			"Property 'nvidia,i2s-controller' missing or invalid\n");
204		ret = -EINVAL;
205		goto err;
206	}
207
208	tegra_alc5632_dai.platform_of_node = tegra_alc5632_dai.cpu_of_node;
209
210	ret = tegra_asoc_utils_init(&alc5632->util_data, &pdev->dev);
211	if (ret)
212		goto err;
213
214	ret = snd_soc_register_card(card);
215	if (ret) {
216		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
217			ret);
218		goto err_fini_utils;
219	}
220
221	return 0;
222
223err_fini_utils:
224	tegra_asoc_utils_fini(&alc5632->util_data);
225err:
226	return ret;
227}
228
229static int tegra_alc5632_remove(struct platform_device *pdev)
230{
231	struct snd_soc_card *card = platform_get_drvdata(pdev);
232	struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
233
234	snd_soc_unregister_card(card);
235
236	tegra_asoc_utils_fini(&machine->util_data);
237
238	return 0;
239}
240
241static const struct of_device_id tegra_alc5632_of_match[] = {
242	{ .compatible = "nvidia,tegra-audio-alc5632", },
243	{},
244};
245
246static struct platform_driver tegra_alc5632_driver = {
247	.driver = {
248		.name = DRV_NAME,
249		.pm = &snd_soc_pm_ops,
250		.of_match_table = tegra_alc5632_of_match,
251	},
252	.probe = tegra_alc5632_probe,
253	.remove = tegra_alc5632_remove,
254};
255module_platform_driver(tegra_alc5632_driver);
256
257MODULE_AUTHOR("Leon Romanovsky <leon@leon.nu>");
258MODULE_DESCRIPTION("Tegra+ALC5632 machine ASoC driver");
259MODULE_LICENSE("GPL");
260MODULE_ALIAS("platform:" DRV_NAME);
261MODULE_DEVICE_TABLE(of, tegra_alc5632_of_match);
262