1// SPDX-License-Identifier: GPL-2.0-only
2/*
3* tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
4 *
5 * Copyright (c) 2014, The Chromium OS Authors.  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/rt5677.h"
28
29#include "tegra_asoc_utils.h"
30
31#define DRV_NAME "tegra-snd-rt5677"
32
33struct tegra_rt5677 {
34	struct tegra_asoc_utils_data util_data;
35	int gpio_hp_det;
36	int gpio_hp_en;
37	int gpio_mic_present;
38	int gpio_dmic_clk_en;
39};
40
41static int tegra_rt5677_asoc_hw_params(struct snd_pcm_substream *substream,
42					struct snd_pcm_hw_params *params)
43{
44	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
45	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
46	struct snd_soc_card *card = rtd->card;
47	struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
48	int srate, mclk, err;
49
50	srate = params_rate(params);
51	mclk = 256 * srate;
52
53	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
54	if (err < 0) {
55		dev_err(card->dev, "Can't configure clocks\n");
56		return err;
57	}
58
59	err = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, mclk,
60					SND_SOC_CLOCK_IN);
61	if (err < 0) {
62		dev_err(card->dev, "codec_dai clock not set\n");
63		return err;
64	}
65
66	return 0;
67}
68
69static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
70			struct snd_kcontrol *k, int event)
71{
72	struct snd_soc_dapm_context *dapm = w->dapm;
73	struct snd_soc_card *card = dapm->card;
74	struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
75
76	if (!gpio_is_valid(machine->gpio_hp_en))
77		return 0;
78
79	gpio_set_value_cansleep(machine->gpio_hp_en,
80		SND_SOC_DAPM_EVENT_ON(event));
81
82	return 0;
83}
84
85static const struct snd_soc_ops tegra_rt5677_ops = {
86	.hw_params = tegra_rt5677_asoc_hw_params,
87};
88
89static struct snd_soc_jack tegra_rt5677_hp_jack;
90
91static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
92	.pin = "Headphone",
93	.mask = SND_JACK_HEADPHONE,
94};
95static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
96	.name = "Headphone detection",
97	.report = SND_JACK_HEADPHONE,
98	.debounce_time = 150,
99};
100
101static struct snd_soc_jack tegra_rt5677_mic_jack;
102
103static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
104	.pin = "Headset Mic",
105	.mask = SND_JACK_MICROPHONE,
106};
107
108static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
109	.name = "Headset Mic detection",
110	.report = SND_JACK_MICROPHONE,
111	.debounce_time = 150,
112	.invert = 1
113};
114
115static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
116	SND_SOC_DAPM_SPK("Speaker", NULL),
117	SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
118	SND_SOC_DAPM_MIC("Headset Mic", NULL),
119	SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
120	SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
121};
122
123static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
124	SOC_DAPM_PIN_SWITCH("Speaker"),
125	SOC_DAPM_PIN_SWITCH("Headphone"),
126	SOC_DAPM_PIN_SWITCH("Headset Mic"),
127	SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
128	SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
129};
130
131static int tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime *rtd)
132{
133	struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
134
135	snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
136			      &tegra_rt5677_hp_jack,
137			      &tegra_rt5677_hp_jack_pins, 1);
138
139	if (gpio_is_valid(machine->gpio_hp_det)) {
140		tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
141		snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
142				&tegra_rt5677_hp_jack_gpio);
143	}
144
145
146	snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
147			      &tegra_rt5677_mic_jack,
148			      &tegra_rt5677_mic_jack_pins, 1);
149
150	if (gpio_is_valid(machine->gpio_mic_present)) {
151		tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
152		snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
153				&tegra_rt5677_mic_jack_gpio);
154	}
155
156	snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
157
158	return 0;
159}
160
161SND_SOC_DAILINK_DEFS(pcm,
162	DAILINK_COMP_ARRAY(COMP_EMPTY()),
163	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5677-aif1")),
164	DAILINK_COMP_ARRAY(COMP_EMPTY()));
165
166static struct snd_soc_dai_link tegra_rt5677_dai = {
167	.name = "RT5677",
168	.stream_name = "RT5677 PCM",
169	.init = tegra_rt5677_asoc_init,
170	.ops = &tegra_rt5677_ops,
171	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
172			SND_SOC_DAIFMT_CBS_CFS,
173	SND_SOC_DAILINK_REG(pcm),
174};
175
176static struct snd_soc_card snd_soc_tegra_rt5677 = {
177	.name = "tegra-rt5677",
178	.driver_name = "tegra",
179	.owner = THIS_MODULE,
180	.dai_link = &tegra_rt5677_dai,
181	.num_links = 1,
182	.controls = tegra_rt5677_controls,
183	.num_controls = ARRAY_SIZE(tegra_rt5677_controls),
184	.dapm_widgets = tegra_rt5677_dapm_widgets,
185	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
186	.fully_routed = true,
187};
188
189static int tegra_rt5677_probe(struct platform_device *pdev)
190{
191	struct device_node *np = pdev->dev.of_node;
192	struct snd_soc_card *card = &snd_soc_tegra_rt5677;
193	struct tegra_rt5677 *machine;
194	int ret;
195
196	machine = devm_kzalloc(&pdev->dev,
197			sizeof(struct tegra_rt5677), GFP_KERNEL);
198	if (!machine)
199		return -ENOMEM;
200
201	card->dev = &pdev->dev;
202	snd_soc_card_set_drvdata(card, machine);
203
204	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
205	if (machine->gpio_hp_det == -EPROBE_DEFER)
206		return -EPROBE_DEFER;
207
208	machine->gpio_mic_present = of_get_named_gpio(np,
209			"nvidia,mic-present-gpios", 0);
210	if (machine->gpio_mic_present == -EPROBE_DEFER)
211		return -EPROBE_DEFER;
212
213	machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
214	if (machine->gpio_hp_en == -EPROBE_DEFER)
215		return -EPROBE_DEFER;
216	if (gpio_is_valid(machine->gpio_hp_en)) {
217		ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
218				GPIOF_OUT_INIT_LOW, "hp_en");
219		if (ret) {
220			dev_err(card->dev, "cannot get hp_en gpio\n");
221			return ret;
222		}
223	}
224
225	machine->gpio_dmic_clk_en = of_get_named_gpio(np,
226		"nvidia,dmic-clk-en-gpios", 0);
227	if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
228		return -EPROBE_DEFER;
229	if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
230		ret = devm_gpio_request_one(&pdev->dev,
231				machine->gpio_dmic_clk_en,
232				GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
233		if (ret) {
234			dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
235			return ret;
236		}
237	}
238
239	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
240	if (ret)
241		goto err;
242
243	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
244	if (ret)
245		goto err;
246
247	tegra_rt5677_dai.codecs->of_node = of_parse_phandle(np,
248			"nvidia,audio-codec", 0);
249	if (!tegra_rt5677_dai.codecs->of_node) {
250		dev_err(&pdev->dev,
251			"Property 'nvidia,audio-codec' missing or invalid\n");
252		ret = -EINVAL;
253		goto err;
254	}
255
256	tegra_rt5677_dai.cpus->of_node = of_parse_phandle(np,
257			"nvidia,i2s-controller", 0);
258	if (!tegra_rt5677_dai.cpus->of_node) {
259		dev_err(&pdev->dev,
260			"Property 'nvidia,i2s-controller' missing or invalid\n");
261		ret = -EINVAL;
262		goto err_put_codec_of_node;
263	}
264	tegra_rt5677_dai.platforms->of_node = tegra_rt5677_dai.cpus->of_node;
265
266	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
267	if (ret)
268		goto err_put_cpu_of_node;
269
270	ret = snd_soc_register_card(card);
271	if (ret) {
272		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
273			ret);
274		goto err_put_cpu_of_node;
275	}
276
277	return 0;
278
279err_put_cpu_of_node:
280	of_node_put(tegra_rt5677_dai.cpus->of_node);
281	tegra_rt5677_dai.cpus->of_node = NULL;
282	tegra_rt5677_dai.platforms->of_node = NULL;
283err_put_codec_of_node:
284	of_node_put(tegra_rt5677_dai.codecs->of_node);
285	tegra_rt5677_dai.codecs->of_node = NULL;
286err:
287	return ret;
288}
289
290static int tegra_rt5677_remove(struct platform_device *pdev)
291{
292	struct snd_soc_card *card = platform_get_drvdata(pdev);
293
294	snd_soc_unregister_card(card);
295
296	tegra_rt5677_dai.platforms->of_node = NULL;
297	of_node_put(tegra_rt5677_dai.codecs->of_node);
298	tegra_rt5677_dai.codecs->of_node = NULL;
299	of_node_put(tegra_rt5677_dai.cpus->of_node);
300	tegra_rt5677_dai.cpus->of_node = NULL;
301
302	return 0;
303}
304
305static const struct of_device_id tegra_rt5677_of_match[] = {
306	{ .compatible = "nvidia,tegra-audio-rt5677", },
307	{},
308};
309
310static struct platform_driver tegra_rt5677_driver = {
311	.driver = {
312		.name = DRV_NAME,
313		.pm = &snd_soc_pm_ops,
314		.of_match_table = tegra_rt5677_of_match,
315	},
316	.probe = tegra_rt5677_probe,
317	.remove = tegra_rt5677_remove,
318};
319module_platform_driver(tegra_rt5677_driver);
320
321MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
322MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
323MODULE_LICENSE("GPL v2");
324MODULE_ALIAS("platform:" DRV_NAME);
325MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);
326