1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec.
4 *
5 * Author: Stephen Warren <swarren@nvidia.com>
6 * Copyright (C) 2010-2012 - NVIDIA, Inc.
7 *
8 * Based on code copyright/by:
9 *
10 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
11 *
12 * Copyright 2007 Wolfson Microelectronics PLC.
13 * Author: Graeme Gregory
14 *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
15 */
16
17#include <linux/module.h>
18#include <linux/platform_device.h>
19#include <linux/slab.h>
20#include <linux/gpio.h>
21#include <linux/of_gpio.h>
22
23#include <sound/core.h>
24#include <sound/jack.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28
29#include "../codecs/wm8753.h"
30
31#include "tegra_asoc_utils.h"
32
33#define DRV_NAME "tegra-snd-wm8753"
34
35struct tegra_wm8753 {
36	struct tegra_asoc_utils_data util_data;
37};
38
39static int tegra_wm8753_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_wm8753 *machine = snd_soc_card_get_drvdata(card);
46	int srate, mclk;
47	int err;
48
49	srate = params_rate(params);
50	switch (srate) {
51	case 11025:
52	case 22050:
53	case 44100:
54	case 88200:
55		mclk = 11289600;
56		break;
57	default:
58		mclk = 12288000;
59		break;
60	}
61
62	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
63	if (err < 0) {
64		dev_err(card->dev, "Can't configure clocks\n");
65		return err;
66	}
67
68	err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk,
69					SND_SOC_CLOCK_IN);
70	if (err < 0) {
71		dev_err(card->dev, "codec_dai clock not set\n");
72		return err;
73	}
74
75	return 0;
76}
77
78static const struct snd_soc_ops tegra_wm8753_ops = {
79	.hw_params = tegra_wm8753_hw_params,
80};
81
82static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = {
83	SND_SOC_DAPM_HP("Headphone Jack", NULL),
84	SND_SOC_DAPM_MIC("Mic Jack", NULL),
85};
86
87SND_SOC_DAILINK_DEFS(pcm,
88	DAILINK_COMP_ARRAY(COMP_EMPTY()),
89	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8753-hifi")),
90	DAILINK_COMP_ARRAY(COMP_EMPTY()));
91
92static struct snd_soc_dai_link tegra_wm8753_dai = {
93	.name = "WM8753",
94	.stream_name = "WM8753 PCM",
95	.ops = &tegra_wm8753_ops,
96	.dai_fmt = SND_SOC_DAIFMT_I2S |
97			SND_SOC_DAIFMT_NB_NF |
98			SND_SOC_DAIFMT_CBS_CFS,
99	SND_SOC_DAILINK_REG(pcm),
100};
101
102static struct snd_soc_card snd_soc_tegra_wm8753 = {
103	.name = "tegra-wm8753",
104	.driver_name = "tegra",
105	.owner = THIS_MODULE,
106	.dai_link = &tegra_wm8753_dai,
107	.num_links = 1,
108
109	.dapm_widgets = tegra_wm8753_dapm_widgets,
110	.num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets),
111	.fully_routed = true,
112};
113
114static int tegra_wm8753_driver_probe(struct platform_device *pdev)
115{
116	struct device_node *np = pdev->dev.of_node;
117	struct snd_soc_card *card = &snd_soc_tegra_wm8753;
118	struct tegra_wm8753 *machine;
119	int ret;
120
121	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753),
122			       GFP_KERNEL);
123	if (!machine)
124		return -ENOMEM;
125
126	card->dev = &pdev->dev;
127	snd_soc_card_set_drvdata(card, machine);
128
129	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
130	if (ret)
131		return ret;
132
133	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
134	if (ret)
135		return ret;
136
137	tegra_wm8753_dai.codecs->of_node = of_parse_phandle(np,
138			"nvidia,audio-codec", 0);
139	if (!tegra_wm8753_dai.codecs->of_node) {
140		dev_err(&pdev->dev,
141			"Property 'nvidia,audio-codec' missing or invalid\n");
142		return -EINVAL;
143	}
144
145	tegra_wm8753_dai.cpus->of_node = of_parse_phandle(np,
146			"nvidia,i2s-controller", 0);
147	if (!tegra_wm8753_dai.cpus->of_node) {
148		dev_err(&pdev->dev,
149			"Property 'nvidia,i2s-controller' missing or invalid\n");
150		return -EINVAL;
151	}
152
153	tegra_wm8753_dai.platforms->of_node = tegra_wm8753_dai.cpus->of_node;
154
155	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
156	if (ret)
157		return ret;
158
159	ret = devm_snd_soc_register_card(&pdev->dev, card);
160	if (ret) {
161		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
162			ret);
163		return ret;
164	}
165
166	return 0;
167}
168
169static const struct of_device_id tegra_wm8753_of_match[] = {
170	{ .compatible = "nvidia,tegra-audio-wm8753", },
171	{},
172};
173
174static struct platform_driver tegra_wm8753_driver = {
175	.driver = {
176		.name = DRV_NAME,
177		.pm = &snd_soc_pm_ops,
178		.of_match_table = tegra_wm8753_of_match,
179	},
180	.probe = tegra_wm8753_driver_probe,
181};
182module_platform_driver(tegra_wm8753_driver);
183
184MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
185MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver");
186MODULE_LICENSE("GPL");
187MODULE_ALIAS("platform:" DRV_NAME);
188MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match);
189