189 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 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 Gregory14 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com15 */16 17#include <linux/gpio/consumer.h>18#include <linux/of.h>19#include <linux/module.h>20#include <linux/platform_device.h>21 22#include <sound/core.h>23#include <sound/jack.h>24#include <sound/soc.h>25 26#include "../codecs/wm8903.h"27 28#include "tegra_asoc_machine.h"29 30static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {31 { .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE },32};33 34static unsigned int tegra_wm8903_mclk_rate(unsigned int srate)35{36 unsigned int mclk;37 38 switch (srate) {39 case 64000:40 case 88200:41 case 96000:42 mclk = 128 * srate;43 break;44 default:45 mclk = 256 * srate;46 break;47 }48 /* FIXME: Codec only requires >= 3MHz if OSR==0 */49 while (mclk < 6000000)50 mclk *= 2;51 52 return mclk;53}54 55static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)56{57 struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->card);58 struct snd_soc_card *card = rtd->card;59 int err;60 61 /*62 * Older version of machine driver was ignoring GPIO polarity,63 * forcing it to active-low. This means that all older device-trees64 * which set the polarity to active-high are wrong and we need to fix65 * them up.66 */67 if (machine->asoc->hp_jack_gpio_active_low) {68 bool active_low = gpiod_is_active_low(machine->gpiod_hp_det);69 70 machine->hp_jack_gpio->invert = !active_low;71 }72 73 err = tegra_asoc_machine_init(rtd);74 if (err)75 return err;76 77 if (!machine->gpiod_mic_det && machine->asoc->add_mic_jack) {78 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);79 struct snd_soc_component *component = codec_dai->component;80 int shrt = 0;81 82 err = snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",83 SND_JACK_MICROPHONE,84 machine->mic_jack,85 tegra_wm8903_mic_jack_pins,86 ARRAY_SIZE(tegra_wm8903_mic_jack_pins));87 if (err) {88 dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err);89 return err;90 }91 92 if (of_property_read_bool(card->dev->of_node, "nvidia,headset"))93 shrt = SND_JACK_MICROPHONE;94 95 wm8903_mic_detect(component, machine->mic_jack,96 SND_JACK_MICROPHONE, shrt);97 }98 99 snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");100 101 return 0;102}103 104static int tegra_wm8903_remove(struct snd_soc_card *card)105{106 struct snd_soc_dai_link *link = &card->dai_link[0];107 struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, link);108 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);109 struct snd_soc_component *component = codec_dai->component;110 111 wm8903_mic_detect(component, NULL, 0, 0);112 113 return 0;114}115 116SND_SOC_DAILINK_DEFS(hifi,117 DAILINK_COMP_ARRAY(COMP_EMPTY()),118 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")),119 DAILINK_COMP_ARRAY(COMP_EMPTY()));120 121static struct snd_soc_dai_link tegra_wm8903_dai = {122 .name = "WM8903",123 .stream_name = "WM8903 PCM",124 .init = tegra_wm8903_init,125 .dai_fmt = SND_SOC_DAIFMT_I2S |126 SND_SOC_DAIFMT_NB_NF |127 SND_SOC_DAIFMT_CBS_CFS,128 SND_SOC_DAILINK_REG(hifi),129};130 131static struct snd_soc_card snd_soc_tegra_wm8903 = {132 .components = "codec:wm8903",133 .owner = THIS_MODULE,134 .dai_link = &tegra_wm8903_dai,135 .num_links = 1,136 .remove = tegra_wm8903_remove,137 .fully_routed = true,138};139 140/* older device-trees used wrong polarity for the headphones-detection GPIO */141static const struct tegra_asoc_data tegra_wm8903_data_legacy = {142 .mclk_rate = tegra_wm8903_mclk_rate,143 .card = &snd_soc_tegra_wm8903,144 .hp_jack_gpio_active_low = true,145 .add_common_dapm_widgets = true,146 .add_common_controls = true,147 .add_common_snd_ops = true,148 .add_mic_jack = true,149 .add_hp_jack = true,150};151 152static const struct tegra_asoc_data tegra_wm8903_data = {153 .mclk_rate = tegra_wm8903_mclk_rate,154 .card = &snd_soc_tegra_wm8903,155 .add_common_dapm_widgets = true,156 .add_common_controls = true,157 .add_common_snd_ops = true,158 .add_mic_jack = true,159 .add_hp_jack = true,160};161 162static const struct of_device_id tegra_wm8903_of_match[] = {163 { .compatible = "ad,tegra-audio-plutux", .data = &tegra_wm8903_data_legacy },164 { .compatible = "ad,tegra-audio-wm8903-medcom-wide", .data = &tegra_wm8903_data_legacy },165 { .compatible = "ad,tegra-audio-wm8903-tec", .data = &tegra_wm8903_data_legacy },166 { .compatible = "nvidia,tegra-audio-wm8903-cardhu", .data = &tegra_wm8903_data_legacy },167 { .compatible = "nvidia,tegra-audio-wm8903-harmony", .data = &tegra_wm8903_data_legacy },168 { .compatible = "nvidia,tegra-audio-wm8903-picasso", .data = &tegra_wm8903_data_legacy },169 { .compatible = "nvidia,tegra-audio-wm8903-seaboard", .data = &tegra_wm8903_data_legacy },170 { .compatible = "nvidia,tegra-audio-wm8903-ventana", .data = &tegra_wm8903_data_legacy },171 { .compatible = "nvidia,tegra-audio-wm8903", .data = &tegra_wm8903_data },172 {},173};174MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);175 176static struct platform_driver tegra_wm8903_driver = {177 .driver = {178 .name = "tegra-wm8903",179 .of_match_table = tegra_wm8903_of_match,180 .pm = &snd_soc_pm_ops,181 },182 .probe = tegra_asoc_machine_probe,183};184module_platform_driver(tegra_wm8903_driver);185 186MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");187MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");188MODULE_LICENSE("GPL");189