1// SPDX-License-Identifier: GPL-2.0-only
2/*
3* tegra_rt5640.c - Tegra machine ASoC driver for boards using RT5640 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 "../codecs/rt5640.h"
28
29#include "tegra_asoc_utils.h"
30
31#define DRV_NAME "tegra-snd-rt5640"
32
33struct tegra_rt5640 {
34	struct tegra_asoc_utils_data util_data;
35	int gpio_hp_det;
36	enum of_gpio_flags gpio_hp_det_flags;
37};
38
39static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
40					struct snd_pcm_hw_params *params)
41{
42	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
43	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
44	struct snd_soc_card *card = rtd->card;
45	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
46	int srate, mclk;
47	int err;
48
49	srate = params_rate(params);
50	mclk = 256 * srate;
51
52	err = tegra_asoc_utils_set_rate(&machine->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, RT5640_SCLK_S_MCLK, 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_rt5640_ops = {
69	.hw_params = tegra_rt5640_asoc_hw_params,
70};
71
72static struct snd_soc_jack tegra_rt5640_hp_jack;
73
74static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
75	{
76		.pin = "Headphones",
77		.mask = SND_JACK_HEADPHONE,
78	},
79};
80
81static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
82	.name = "Headphone detection",
83	.report = SND_JACK_HEADPHONE,
84	.debounce_time = 150,
85	.invert = 1,
86};
87
88static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
89	SND_SOC_DAPM_HP("Headphones", NULL),
90	SND_SOC_DAPM_SPK("Speakers", NULL),
91	SND_SOC_DAPM_MIC("Mic Jack", NULL),
92};
93
94static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
95	SOC_DAPM_PIN_SWITCH("Speakers"),
96};
97
98static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
99{
100	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
101
102	snd_soc_card_jack_new(rtd->card, "Headphones", SND_JACK_HEADPHONE,
103			      &tegra_rt5640_hp_jack, tegra_rt5640_hp_jack_pins,
104			      ARRAY_SIZE(tegra_rt5640_hp_jack_pins));
105
106	if (gpio_is_valid(machine->gpio_hp_det)) {
107		tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
108		tegra_rt5640_hp_jack_gpio.invert =
109			!!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
110		snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
111						1,
112						&tegra_rt5640_hp_jack_gpio);
113	}
114
115	return 0;
116}
117
118SND_SOC_DAILINK_DEFS(aif1,
119	DAILINK_COMP_ARRAY(COMP_EMPTY()),
120	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5640-aif1")),
121	DAILINK_COMP_ARRAY(COMP_EMPTY()));
122
123static struct snd_soc_dai_link tegra_rt5640_dai = {
124	.name = "RT5640",
125	.stream_name = "RT5640 PCM",
126	.init = tegra_rt5640_asoc_init,
127	.ops = &tegra_rt5640_ops,
128	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
129			SND_SOC_DAIFMT_CBS_CFS,
130	SND_SOC_DAILINK_REG(aif1),
131};
132
133static struct snd_soc_card snd_soc_tegra_rt5640 = {
134	.name = "tegra-rt5640",
135	.driver_name = "tegra",
136	.owner = THIS_MODULE,
137	.dai_link = &tegra_rt5640_dai,
138	.num_links = 1,
139	.controls = tegra_rt5640_controls,
140	.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
141	.dapm_widgets = tegra_rt5640_dapm_widgets,
142	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
143	.fully_routed = true,
144};
145
146static int tegra_rt5640_probe(struct platform_device *pdev)
147{
148	struct device_node *np = pdev->dev.of_node;
149	struct snd_soc_card *card = &snd_soc_tegra_rt5640;
150	struct tegra_rt5640 *machine;
151	int ret;
152
153	machine = devm_kzalloc(&pdev->dev,
154			sizeof(struct tegra_rt5640), GFP_KERNEL);
155	if (!machine)
156		return -ENOMEM;
157
158	card->dev = &pdev->dev;
159	snd_soc_card_set_drvdata(card, machine);
160
161	machine->gpio_hp_det = of_get_named_gpio_flags(
162		np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
163	if (machine->gpio_hp_det == -EPROBE_DEFER)
164		return -EPROBE_DEFER;
165
166	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
167	if (ret)
168		return ret;
169
170	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
171	if (ret)
172		return ret;
173
174	tegra_rt5640_dai.codecs->of_node = of_parse_phandle(np,
175			"nvidia,audio-codec", 0);
176	if (!tegra_rt5640_dai.codecs->of_node) {
177		dev_err(&pdev->dev,
178			"Property 'nvidia,audio-codec' missing or invalid\n");
179		return -EINVAL;
180	}
181
182	tegra_rt5640_dai.cpus->of_node = of_parse_phandle(np,
183			"nvidia,i2s-controller", 0);
184	if (!tegra_rt5640_dai.cpus->of_node) {
185		dev_err(&pdev->dev,
186			"Property 'nvidia,i2s-controller' missing or invalid\n");
187		return -EINVAL;
188	}
189
190	tegra_rt5640_dai.platforms->of_node = tegra_rt5640_dai.cpus->of_node;
191
192	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
193	if (ret)
194		return ret;
195
196	ret = devm_snd_soc_register_card(&pdev->dev, card);
197	if (ret) {
198		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
199			ret);
200		return ret;
201	}
202
203	return 0;
204}
205
206static const struct of_device_id tegra_rt5640_of_match[] = {
207	{ .compatible = "nvidia,tegra-audio-rt5640", },
208	{},
209};
210
211static struct platform_driver tegra_rt5640_driver = {
212	.driver = {
213		.name = DRV_NAME,
214		.pm = &snd_soc_pm_ops,
215		.of_match_table = tegra_rt5640_of_match,
216	},
217	.probe = tegra_rt5640_probe,
218};
219module_platform_driver(tegra_rt5640_driver);
220
221MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
222MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
223MODULE_LICENSE("GPL v2");
224MODULE_ALIAS("platform:" DRV_NAME);
225MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
226