1 // SPDX-License-Identifier: GPL-2.0-only
3 * tegra_rt5640.c - Tegra machine ASoC driver for boards using RT5640 codec.
5 * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
7 * Based on code copyright/by:
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.
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>
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>
27 #include "../codecs/rt5640.h"
29 #include "tegra_asoc_utils.h"
31 #define DRV_NAME "tegra-snd-rt5640"
34 struct tegra_asoc_utils_data util_data;
36 enum of_gpio_flags gpio_hp_det_flags;
39 static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
40 struct snd_pcm_hw_params *params)
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_rt5640 *machine = snd_soc_card_get_drvdata(card);
49 srate = params_rate(params);
52 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
54 dev_err(card->dev, "Can't configure clocks\n");
58 err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
61 dev_err(card->dev, "codec_dai clock not set\n");
68 static const struct snd_soc_ops tegra_rt5640_ops = {
69 .hw_params = tegra_rt5640_asoc_hw_params,
72 static struct snd_soc_jack tegra_rt5640_hp_jack;
74 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
77 .mask = SND_JACK_HEADPHONE,
81 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
82 .name = "Headphone detection",
83 .report = SND_JACK_HEADPHONE,
88 static 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),
94 static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
95 SOC_DAPM_PIN_SWITCH("Speakers"),
98 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
100 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
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));
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,
112 &tegra_rt5640_hp_jack_gpio);
118 SND_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()));
123 static struct snd_soc_dai_link tegra_rt5640_dai = {
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),
133 static 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,
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,
146 static int tegra_rt5640_probe(struct platform_device *pdev)
148 struct device_node *np = pdev->dev.of_node;
149 struct snd_soc_card *card = &snd_soc_tegra_rt5640;
150 struct tegra_rt5640 *machine;
153 machine = devm_kzalloc(&pdev->dev,
154 sizeof(struct tegra_rt5640), GFP_KERNEL);
158 card->dev = &pdev->dev;
159 snd_soc_card_set_drvdata(card, machine);
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;
166 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
170 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
174 tegra_rt5640_dai.codecs->of_node = of_parse_phandle(np,
175 "nvidia,audio-codec", 0);
176 if (!tegra_rt5640_dai.codecs->of_node) {
178 "Property 'nvidia,audio-codec' missing or invalid\n");
183 tegra_rt5640_dai.cpus->of_node = of_parse_phandle(np,
184 "nvidia,i2s-controller", 0);
185 if (!tegra_rt5640_dai.cpus->of_node) {
187 "Property 'nvidia,i2s-controller' missing or invalid\n");
192 tegra_rt5640_dai.platforms->of_node = tegra_rt5640_dai.cpus->of_node;
194 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
198 ret = snd_soc_register_card(card);
200 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
208 tegra_asoc_utils_fini(&machine->util_data);
213 static int tegra_rt5640_remove(struct platform_device *pdev)
215 struct snd_soc_card *card = platform_get_drvdata(pdev);
216 struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
218 snd_soc_unregister_card(card);
220 tegra_asoc_utils_fini(&machine->util_data);
225 static const struct of_device_id tegra_rt5640_of_match[] = {
226 { .compatible = "nvidia,tegra-audio-rt5640", },
230 static struct platform_driver tegra_rt5640_driver = {
233 .pm = &snd_soc_pm_ops,
234 .of_match_table = tegra_rt5640_of_match,
236 .probe = tegra_rt5640_probe,
237 .remove = tegra_rt5640_remove,
239 module_platform_driver(tegra_rt5640_driver);
241 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
242 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
243 MODULE_LICENSE("GPL v2");
244 MODULE_ALIAS("platform:" DRV_NAME);
245 MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);