1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Tegra machine ASoC driver for boards using a MAX90809 CODEC.
4 *
5 * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
6 *
7 * Based on code copyright/by:
8 *
9 * Copyright (C) 2010-2012 - NVIDIA, Inc.
10 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
11 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
12 * Copyright 2007 Wolfson Microelectronics PLC.
13 */
14
15#include <linux/module.h>
16#include <linux/platform_device.h>
17#include <linux/slab.h>
18#include <linux/gpio.h>
19#include <linux/of_gpio.h>
20
21#include <sound/core.h>
22#include <sound/jack.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26
27#include "tegra_asoc_utils.h"
28
29#define DRV_NAME "tegra-snd-max98090"
30
31struct tegra_max98090 {
32	struct tegra_asoc_utils_data util_data;
33	int gpio_hp_det;
34	int gpio_mic_det;
35};
36
37static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
38					struct snd_pcm_hw_params *params)
39{
40	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
41	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
42	struct snd_soc_card *card = rtd->card;
43	struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
44	int srate, mclk;
45	int err;
46
47	srate = params_rate(params);
48	switch (srate) {
49	case 8000:
50	case 16000:
51	case 24000:
52	case 32000:
53	case 48000:
54	case 64000:
55	case 96000:
56		mclk = 12288000;
57		break;
58	case 11025:
59	case 22050:
60	case 44100:
61	case 88200:
62		mclk = 11289600;
63		break;
64	default:
65		mclk = 12000000;
66		break;
67	}
68
69	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
70	if (err < 0) {
71		dev_err(card->dev, "Can't configure clocks\n");
72		return err;
73	}
74
75	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
76					SND_SOC_CLOCK_IN);
77	if (err < 0) {
78		dev_err(card->dev, "codec_dai clock not set\n");
79		return err;
80	}
81
82	return 0;
83}
84
85static const struct snd_soc_ops tegra_max98090_ops = {
86	.hw_params = tegra_max98090_asoc_hw_params,
87};
88
89static struct snd_soc_jack tegra_max98090_hp_jack;
90
91static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
92	{
93		.pin = "Headphones",
94		.mask = SND_JACK_HEADPHONE,
95	},
96};
97
98static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
99	.name = "Headphone detection",
100	.report = SND_JACK_HEADPHONE,
101	.debounce_time = 150,
102	.invert = 1,
103};
104
105static struct snd_soc_jack tegra_max98090_mic_jack;
106
107static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
108	{
109		.pin = "Mic Jack",
110		.mask = SND_JACK_MICROPHONE,
111	},
112};
113
114static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
115	.name = "Mic detection",
116	.report = SND_JACK_MICROPHONE,
117	.debounce_time = 150,
118	.invert = 1,
119};
120
121static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
122	SND_SOC_DAPM_HP("Headphones", NULL),
123	SND_SOC_DAPM_SPK("Speakers", NULL),
124	SND_SOC_DAPM_MIC("Mic Jack", NULL),
125	SND_SOC_DAPM_MIC("Int Mic", NULL),
126};
127
128static const struct snd_kcontrol_new tegra_max98090_controls[] = {
129	SOC_DAPM_PIN_SWITCH("Headphones"),
130	SOC_DAPM_PIN_SWITCH("Speakers"),
131	SOC_DAPM_PIN_SWITCH("Mic Jack"),
132	SOC_DAPM_PIN_SWITCH("Int Mic"),
133};
134
135static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
136{
137	struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
138
139	if (gpio_is_valid(machine->gpio_hp_det)) {
140		snd_soc_card_jack_new(rtd->card, "Headphones",
141				      SND_JACK_HEADPHONE,
142				      &tegra_max98090_hp_jack,
143				      tegra_max98090_hp_jack_pins,
144				      ARRAY_SIZE(tegra_max98090_hp_jack_pins));
145
146		tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
147		snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
148					1,
149					&tegra_max98090_hp_jack_gpio);
150	}
151
152	if (gpio_is_valid(machine->gpio_mic_det)) {
153		snd_soc_card_jack_new(rtd->card, "Mic Jack",
154				      SND_JACK_MICROPHONE,
155				      &tegra_max98090_mic_jack,
156				      tegra_max98090_mic_jack_pins,
157				      ARRAY_SIZE(tegra_max98090_mic_jack_pins));
158
159		tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
160		snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
161				       1,
162				       &tegra_max98090_mic_jack_gpio);
163	}
164
165	return 0;
166}
167
168SND_SOC_DAILINK_DEFS(pcm,
169	DAILINK_COMP_ARRAY(COMP_EMPTY()),
170	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")),
171	DAILINK_COMP_ARRAY(COMP_EMPTY()));
172
173static struct snd_soc_dai_link tegra_max98090_dai = {
174	.name = "max98090",
175	.stream_name = "max98090 PCM",
176	.init = tegra_max98090_asoc_init,
177	.ops = &tegra_max98090_ops,
178	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
179			SND_SOC_DAIFMT_CBS_CFS,
180	SND_SOC_DAILINK_REG(pcm),
181};
182
183static struct snd_soc_card snd_soc_tegra_max98090 = {
184	.name = "tegra-max98090",
185	.driver_name = "tegra",
186	.owner = THIS_MODULE,
187	.dai_link = &tegra_max98090_dai,
188	.num_links = 1,
189	.controls = tegra_max98090_controls,
190	.num_controls = ARRAY_SIZE(tegra_max98090_controls),
191	.dapm_widgets = tegra_max98090_dapm_widgets,
192	.num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
193	.fully_routed = true,
194};
195
196static int tegra_max98090_probe(struct platform_device *pdev)
197{
198	struct device_node *np = pdev->dev.of_node;
199	struct snd_soc_card *card = &snd_soc_tegra_max98090;
200	struct tegra_max98090 *machine;
201	int ret;
202
203	machine = devm_kzalloc(&pdev->dev,
204			sizeof(struct tegra_max98090), GFP_KERNEL);
205	if (!machine)
206		return -ENOMEM;
207
208	card->dev = &pdev->dev;
209	snd_soc_card_set_drvdata(card, machine);
210
211	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
212	if (machine->gpio_hp_det == -EPROBE_DEFER)
213		return -EPROBE_DEFER;
214
215	machine->gpio_mic_det =
216			of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
217	if (machine->gpio_mic_det == -EPROBE_DEFER)
218		return -EPROBE_DEFER;
219
220	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
221	if (ret)
222		return ret;
223
224	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
225	if (ret)
226		return ret;
227
228	tegra_max98090_dai.codecs->of_node = of_parse_phandle(np,
229			"nvidia,audio-codec", 0);
230	if (!tegra_max98090_dai.codecs->of_node) {
231		dev_err(&pdev->dev,
232			"Property 'nvidia,audio-codec' missing or invalid\n");
233		return -EINVAL;
234	}
235
236	tegra_max98090_dai.cpus->of_node = of_parse_phandle(np,
237			"nvidia,i2s-controller", 0);
238	if (!tegra_max98090_dai.cpus->of_node) {
239		dev_err(&pdev->dev,
240			"Property 'nvidia,i2s-controller' missing or invalid\n");
241		return -EINVAL;
242	}
243
244	tegra_max98090_dai.platforms->of_node = tegra_max98090_dai.cpus->of_node;
245
246	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
247	if (ret)
248		return ret;
249
250	ret = devm_snd_soc_register_card(&pdev->dev, card);
251	if (ret) {
252		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
253			ret);
254		return ret;
255	}
256
257	return 0;
258}
259
260static const struct of_device_id tegra_max98090_of_match[] = {
261	{ .compatible = "nvidia,tegra-audio-max98090", },
262	{},
263};
264
265static struct platform_driver tegra_max98090_driver = {
266	.driver = {
267		.name = DRV_NAME,
268		.pm = &snd_soc_pm_ops,
269		.of_match_table = tegra_max98090_of_match,
270	},
271	.probe = tegra_max98090_probe,
272};
273module_platform_driver(tegra_max98090_driver);
274
275MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
276MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
277MODULE_LICENSE("GPL v2");
278MODULE_ALIAS("platform:" DRV_NAME);
279MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
280