1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec
4 *
5 * Author: Marcel Ziswiler <marcel@ziswiler.com>
6 *
7 * Based on code copyright/by:
8 *
9 * Copyright (C) 2010-2012 - NVIDIA, Inc.
10 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
11 * Copyright 2007 Wolfson Microelectronics PLC.
12 */
13
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/slab.h>
17#include <linux/gpio.h>
18#include <linux/of_gpio.h>
19
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/pcm_params.h>
23#include <sound/soc.h>
24
25#include "../codecs/sgtl5000.h"
26
27#include "tegra_asoc_utils.h"
28
29#define DRV_NAME "tegra-snd-sgtl5000"
30
31struct tegra_sgtl5000 {
32	struct tegra_asoc_utils_data util_data;
33};
34
35static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream,
36					struct snd_pcm_hw_params *params)
37{
38	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
39	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
40	struct snd_soc_card *card = rtd->card;
41	struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
42	int srate, mclk;
43	int err;
44
45	srate = params_rate(params);
46	switch (srate) {
47	case 11025:
48	case 22050:
49	case 44100:
50	case 88200:
51		mclk = 11289600;
52		break;
53	default:
54		mclk = 12288000;
55		break;
56	}
57
58	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
59	if (err < 0) {
60		dev_err(card->dev, "Can't configure clocks\n");
61		return err;
62	}
63
64	err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk,
65				     SND_SOC_CLOCK_IN);
66	if (err < 0) {
67		dev_err(card->dev, "codec_dai clock not set\n");
68		return err;
69	}
70
71	return 0;
72}
73
74static const struct snd_soc_ops tegra_sgtl5000_ops = {
75	.hw_params = tegra_sgtl5000_hw_params,
76};
77
78static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = {
79	SND_SOC_DAPM_HP("Headphone Jack", NULL),
80	SND_SOC_DAPM_LINE("Line In Jack", NULL),
81	SND_SOC_DAPM_MIC("Mic Jack", NULL),
82};
83
84SND_SOC_DAILINK_DEFS(hifi,
85	DAILINK_COMP_ARRAY(COMP_EMPTY()),
86	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
87	DAILINK_COMP_ARRAY(COMP_EMPTY()));
88
89static struct snd_soc_dai_link tegra_sgtl5000_dai = {
90	.name = "sgtl5000",
91	.stream_name = "HiFi",
92	.ops = &tegra_sgtl5000_ops,
93	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
94			SND_SOC_DAIFMT_CBS_CFS,
95	SND_SOC_DAILINK_REG(hifi),
96};
97
98static struct snd_soc_card snd_soc_tegra_sgtl5000 = {
99	.name = "tegra-sgtl5000",
100	.driver_name = "tegra",
101	.owner = THIS_MODULE,
102	.dai_link = &tegra_sgtl5000_dai,
103	.num_links = 1,
104	.dapm_widgets = tegra_sgtl5000_dapm_widgets,
105	.num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
106	.fully_routed = true,
107};
108
109static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
110{
111	struct device_node *np = pdev->dev.of_node;
112	struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
113	struct tegra_sgtl5000 *machine;
114	int ret;
115
116	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
117			       GFP_KERNEL);
118	if (!machine)
119		return -ENOMEM;
120
121	card->dev = &pdev->dev;
122	snd_soc_card_set_drvdata(card, machine);
123
124	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
125	if (ret)
126		goto err;
127
128	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
129	if (ret)
130		goto err;
131
132	tegra_sgtl5000_dai.codecs->of_node = of_parse_phandle(np,
133			"nvidia,audio-codec", 0);
134	if (!tegra_sgtl5000_dai.codecs->of_node) {
135		dev_err(&pdev->dev,
136			"Property 'nvidia,audio-codec' missing or invalid\n");
137		ret = -EINVAL;
138		goto err;
139	}
140
141	tegra_sgtl5000_dai.cpus->of_node = of_parse_phandle(np,
142			"nvidia,i2s-controller", 0);
143	if (!tegra_sgtl5000_dai.cpus->of_node) {
144		dev_err(&pdev->dev,
145			"Property 'nvidia,i2s-controller' missing/invalid\n");
146		ret = -EINVAL;
147		goto err_put_codec_of_node;
148	}
149
150	tegra_sgtl5000_dai.platforms->of_node = tegra_sgtl5000_dai.cpus->of_node;
151
152	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
153	if (ret)
154		goto err_put_cpu_of_node;
155
156	ret = snd_soc_register_card(card);
157	if (ret) {
158		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
159			ret);
160		goto err_put_cpu_of_node;
161	}
162
163	return 0;
164
165err_put_cpu_of_node:
166	of_node_put(tegra_sgtl5000_dai.cpus->of_node);
167	tegra_sgtl5000_dai.cpus->of_node = NULL;
168	tegra_sgtl5000_dai.platforms->of_node = NULL;
169err_put_codec_of_node:
170	of_node_put(tegra_sgtl5000_dai.codecs->of_node);
171	tegra_sgtl5000_dai.codecs->of_node = NULL;
172err:
173	return ret;
174}
175
176static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
177{
178	struct snd_soc_card *card = platform_get_drvdata(pdev);
179	int ret;
180
181	ret = snd_soc_unregister_card(card);
182
183	of_node_put(tegra_sgtl5000_dai.cpus->of_node);
184	tegra_sgtl5000_dai.cpus->of_node = NULL;
185	tegra_sgtl5000_dai.platforms->of_node = NULL;
186	of_node_put(tegra_sgtl5000_dai.codecs->of_node);
187	tegra_sgtl5000_dai.codecs->of_node = NULL;
188
189	return ret;
190}
191
192static const struct of_device_id tegra_sgtl5000_of_match[] = {
193	{ .compatible = "nvidia,tegra-audio-sgtl5000", },
194	{ /* sentinel */ },
195};
196
197static struct platform_driver tegra_sgtl5000_driver = {
198	.driver = {
199		.name = DRV_NAME,
200		.pm = &snd_soc_pm_ops,
201		.of_match_table = tegra_sgtl5000_of_match,
202	},
203	.probe = tegra_sgtl5000_driver_probe,
204	.remove = tegra_sgtl5000_driver_remove,
205};
206module_platform_driver(tegra_sgtl5000_driver);
207
208MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
209MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
210MODULE_LICENSE("GPL v2");
211MODULE_ALIAS("platform:" DRV_NAME);
212MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);
213