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 = substream->private_data;
 43	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 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	.owner = THIS_MODULE,
105	.dai_link = &tegra_wm8753_dai,
106	.num_links = 1,
107
108	.dapm_widgets = tegra_wm8753_dapm_widgets,
109	.num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets),
110	.fully_routed = true,
111};
112
113static int tegra_wm8753_driver_probe(struct platform_device *pdev)
114{
115	struct device_node *np = pdev->dev.of_node;
116	struct snd_soc_card *card = &snd_soc_tegra_wm8753;
117	struct tegra_wm8753 *machine;
118	int ret;
119
120	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753),
121			       GFP_KERNEL);
122	if (!machine)
123		return -ENOMEM;
124
125	card->dev = &pdev->dev;
126	snd_soc_card_set_drvdata(card, machine);
127
128	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
129	if (ret)
130		goto err;
131
132	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
133	if (ret)
134		goto err;
135
136	tegra_wm8753_dai.codecs->of_node = of_parse_phandle(np,
137			"nvidia,audio-codec", 0);
138	if (!tegra_wm8753_dai.codecs->of_node) {
139		dev_err(&pdev->dev,
140			"Property 'nvidia,audio-codec' missing or invalid\n");
141		ret = -EINVAL;
142		goto err;
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		ret = -EINVAL;
151		goto err;
152	}
153
154	tegra_wm8753_dai.platforms->of_node = tegra_wm8753_dai.cpus->of_node;
155
156	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
157	if (ret)
158		goto err;
159
160	ret = snd_soc_register_card(card);
161	if (ret) {
162		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
163			ret);
164		goto err_fini_utils;
165	}
166
167	return 0;
168
169err_fini_utils:
170	tegra_asoc_utils_fini(&machine->util_data);
171err:
172	return ret;
173}
174
175static int tegra_wm8753_driver_remove(struct platform_device *pdev)
176{
177	struct snd_soc_card *card = platform_get_drvdata(pdev);
178	struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card);
179
180	snd_soc_unregister_card(card);
181
182	tegra_asoc_utils_fini(&machine->util_data);
183
184	return 0;
185}
186
187static const struct of_device_id tegra_wm8753_of_match[] = {
188	{ .compatible = "nvidia,tegra-audio-wm8753", },
189	{},
190};
191
192static struct platform_driver tegra_wm8753_driver = {
193	.driver = {
194		.name = DRV_NAME,
195		.pm = &snd_soc_pm_ops,
196		.of_match_table = tegra_wm8753_of_match,
197	},
198	.probe = tegra_wm8753_driver_probe,
199	.remove = tegra_wm8753_driver_remove,
200};
201module_platform_driver(tegra_wm8753_driver);
202
203MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
204MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver");
205MODULE_LICENSE("GPL");
206MODULE_ALIAS("platform:" DRV_NAME);
207MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match);