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188 lines
5.3 KiB
188 lines
5.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec. |
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* |
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* Author: Stephen Warren <[email protected]> |
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* Copyright (C) 2010-2012 - NVIDIA, Inc. |
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* |
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* Based on code copyright/by: |
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* |
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* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
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* |
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* Copyright 2007 Wolfson Microelectronics PLC. |
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* Author: Graeme Gregory |
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* [email protected] or [email protected] |
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*/ |
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#include <linux/gpio/consumer.h> |
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#include <linux/of.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <sound/core.h> |
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#include <sound/jack.h> |
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#include <sound/soc.h> |
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#include "../codecs/wm8903.h" |
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#include "tegra_asoc_machine.h" |
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static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { |
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{ .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE }, |
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}; |
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static unsigned int tegra_wm8903_mclk_rate(unsigned int srate) |
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{ |
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unsigned int mclk; |
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switch (srate) { |
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case 64000: |
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case 88200: |
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case 96000: |
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mclk = 128 * srate; |
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break; |
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default: |
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mclk = 256 * srate; |
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break; |
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} |
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/* FIXME: Codec only requires >= 3MHz if OSR==0 */ |
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while (mclk < 6000000) |
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mclk *= 2; |
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return mclk; |
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} |
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static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->card); |
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struct snd_soc_card *card = rtd->card; |
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int err; |
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/* |
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* Older version of machine driver was ignoring GPIO polarity, |
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* forcing it to active-low. This means that all older device-trees |
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* which set the polarity to active-high are wrong and we need to fix |
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* them up. |
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*/ |
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if (machine->asoc->hp_jack_gpio_active_low) { |
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bool active_low = gpiod_is_active_low(machine->gpiod_hp_det); |
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machine->hp_jack_gpio->invert = !active_low; |
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} |
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err = tegra_asoc_machine_init(rtd); |
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if (err) |
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return err; |
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if (!machine->gpiod_mic_det && machine->asoc->add_mic_jack) { |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_component *component = codec_dai->component; |
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int shrt = 0; |
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err = snd_soc_card_jack_new(rtd->card, "Mic Jack", |
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SND_JACK_MICROPHONE, |
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machine->mic_jack, |
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tegra_wm8903_mic_jack_pins, |
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ARRAY_SIZE(tegra_wm8903_mic_jack_pins)); |
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if (err) { |
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dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err); |
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return err; |
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} |
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if (of_property_read_bool(card->dev->of_node, "nvidia,headset")) |
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shrt = SND_JACK_MICROPHONE; |
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wm8903_mic_detect(component, machine->mic_jack, |
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SND_JACK_MICROPHONE, shrt); |
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} |
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snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS"); |
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return 0; |
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} |
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static int tegra_wm8903_remove(struct snd_soc_card *card) |
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{ |
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struct snd_soc_dai_link *link = &card->dai_link[0]; |
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struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, link); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_component *component = codec_dai->component; |
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wm8903_mic_detect(component, NULL, 0, 0); |
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return 0; |
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} |
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SND_SOC_DAILINK_DEFS(hifi, |
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DAILINK_COMP_ARRAY(COMP_EMPTY()), |
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link tegra_wm8903_dai = { |
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.name = "WM8903", |
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.stream_name = "WM8903 PCM", |
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.init = tegra_wm8903_init, |
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.dai_fmt = SND_SOC_DAIFMT_I2S | |
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SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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SND_SOC_DAILINK_REG(hifi), |
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}; |
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static struct snd_soc_card snd_soc_tegra_wm8903 = { |
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.components = "codec:wm8903", |
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.owner = THIS_MODULE, |
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.dai_link = &tegra_wm8903_dai, |
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.num_links = 1, |
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.remove = tegra_wm8903_remove, |
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.fully_routed = true, |
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}; |
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/* older device-trees used wrong polarity for the headphones-detection GPIO */ |
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static const struct tegra_asoc_data tegra_wm8903_data_legacy = { |
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.mclk_rate = tegra_wm8903_mclk_rate, |
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.card = &snd_soc_tegra_wm8903, |
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.hp_jack_gpio_active_low = true, |
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.add_common_dapm_widgets = true, |
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.add_common_controls = true, |
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.add_common_snd_ops = true, |
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.add_mic_jack = true, |
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.add_hp_jack = true, |
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}; |
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static const struct tegra_asoc_data tegra_wm8903_data = { |
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.mclk_rate = tegra_wm8903_mclk_rate, |
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.card = &snd_soc_tegra_wm8903, |
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.add_common_dapm_widgets = true, |
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.add_common_controls = true, |
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.add_common_snd_ops = true, |
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.add_mic_jack = true, |
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.add_hp_jack = true, |
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}; |
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static const struct of_device_id tegra_wm8903_of_match[] = { |
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{ .compatible = "ad,tegra-audio-plutux", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "ad,tegra-audio-wm8903-medcom-wide", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "ad,tegra-audio-wm8903-tec", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "nvidia,tegra-audio-wm8903-cardhu", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "nvidia,tegra-audio-wm8903-harmony", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "nvidia,tegra-audio-wm8903-picasso", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "nvidia,tegra-audio-wm8903-seaboard", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "nvidia,tegra-audio-wm8903-ventana", .data = &tegra_wm8903_data_legacy }, |
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{ .compatible = "nvidia,tegra-audio-wm8903", .data = &tegra_wm8903_data }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); |
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static struct platform_driver tegra_wm8903_driver = { |
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.driver = { |
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.name = "tegra-wm8903", |
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.of_match_table = tegra_wm8903_of_match, |
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.pm = &snd_soc_pm_ops, |
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}, |
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.probe = tegra_asoc_machine_probe, |
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}; |
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module_platform_driver(tegra_wm8903_driver); |
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MODULE_AUTHOR("Stephen Warren <[email protected]>"); |
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MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); |
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MODULE_LICENSE("GPL");
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