diff options
Diffstat (limited to 'sound/soc/tegra/tegra_wm8903.c')
| -rw-r--r-- | sound/soc/tegra/tegra_wm8903.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c new file mode 100644 index 000000000..b3cd0a34d --- /dev/null +++ b/sound/soc/tegra/tegra_wm8903.c @@ -0,0 +1,188 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec. + * + * Author: Stephen Warren <swarren@nvidia.com> + * Copyright (C) 2010-2012 - NVIDIA, Inc. + * + * Based on code copyright/by: + * + * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. + * + * Copyright 2007 Wolfson Microelectronics PLC. + * Author: Graeme Gregory + * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com + */ + +#include <linux/gpio/consumer.h> +#include <linux/of.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <sound/core.h> +#include <sound/jack.h> +#include <sound/soc.h> + +#include "../codecs/wm8903.h" + +#include "tegra_asoc_machine.h" + +static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { + { .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE }, +}; + +static unsigned int tegra_wm8903_mclk_rate(unsigned int srate) +{ + unsigned int mclk; + + switch (srate) { + case 64000: + case 88200: + case 96000: + mclk = 128 * srate; + break; + default: + mclk = 256 * srate; + break; + } + /* FIXME: Codec only requires >= 3MHz if OSR==0 */ + while (mclk < 6000000) + mclk *= 2; + + return mclk; +} + +static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) +{ + struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->card); + struct snd_soc_card *card = rtd->card; + int err; + + /* + * Older version of machine driver was ignoring GPIO polarity, + * forcing it to active-low. This means that all older device-trees + * which set the polarity to active-high are wrong and we need to fix + * them up. + */ + if (machine->asoc->hp_jack_gpio_active_low) { + bool active_low = gpiod_is_active_low(machine->gpiod_hp_det); + + machine->hp_jack_gpio->invert = !active_low; + } + + err = tegra_asoc_machine_init(rtd); + if (err) + return err; + + if (!machine->gpiod_mic_det && machine->asoc->add_mic_jack) { + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_soc_component *component = codec_dai->component; + int shrt = 0; + + err = snd_soc_card_jack_new_pins(rtd->card, "Mic Jack", + SND_JACK_MICROPHONE, + machine->mic_jack, + tegra_wm8903_mic_jack_pins, + ARRAY_SIZE(tegra_wm8903_mic_jack_pins)); + if (err) { + dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err); + return err; + } + + if (of_property_read_bool(card->dev->of_node, "nvidia,headset")) + shrt = SND_JACK_MICROPHONE; + + wm8903_mic_detect(component, machine->mic_jack, + SND_JACK_MICROPHONE, shrt); + } + + snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS"); + + return 0; +} + +static int tegra_wm8903_remove(struct snd_soc_card *card) +{ + struct snd_soc_dai_link *link = &card->dai_link[0]; + struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, link); + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_soc_component *component = codec_dai->component; + + wm8903_mic_detect(component, NULL, 0, 0); + + return 0; +} + +SND_SOC_DAILINK_DEFS(hifi, + DAILINK_COMP_ARRAY(COMP_EMPTY()), + DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")), + DAILINK_COMP_ARRAY(COMP_EMPTY())); + +static struct snd_soc_dai_link tegra_wm8903_dai = { + .name = "WM8903", + .stream_name = "WM8903 PCM", + .init = tegra_wm8903_init, + .dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + SND_SOC_DAILINK_REG(hifi), +}; + +static struct snd_soc_card snd_soc_tegra_wm8903 = { + .components = "codec:wm8903", + .owner = THIS_MODULE, + .dai_link = &tegra_wm8903_dai, + .num_links = 1, + .remove = tegra_wm8903_remove, + .fully_routed = true, +}; + +/* older device-trees used wrong polarity for the headphones-detection GPIO */ +static const struct tegra_asoc_data tegra_wm8903_data_legacy = { + .mclk_rate = tegra_wm8903_mclk_rate, + .card = &snd_soc_tegra_wm8903, + .hp_jack_gpio_active_low = true, + .add_common_dapm_widgets = true, + .add_common_controls = true, + .add_common_snd_ops = true, + .add_mic_jack = true, + .add_hp_jack = true, +}; + +static const struct tegra_asoc_data tegra_wm8903_data = { + .mclk_rate = tegra_wm8903_mclk_rate, + .card = &snd_soc_tegra_wm8903, + .add_common_dapm_widgets = true, + .add_common_controls = true, + .add_common_snd_ops = true, + .add_mic_jack = true, + .add_hp_jack = true, +}; + +static const struct of_device_id tegra_wm8903_of_match[] = { + { .compatible = "ad,tegra-audio-plutux", .data = &tegra_wm8903_data_legacy }, + { .compatible = "ad,tegra-audio-wm8903-medcom-wide", .data = &tegra_wm8903_data_legacy }, + { .compatible = "ad,tegra-audio-wm8903-tec", .data = &tegra_wm8903_data_legacy }, + { .compatible = "nvidia,tegra-audio-wm8903-cardhu", .data = &tegra_wm8903_data_legacy }, + { .compatible = "nvidia,tegra-audio-wm8903-harmony", .data = &tegra_wm8903_data_legacy }, + { .compatible = "nvidia,tegra-audio-wm8903-picasso", .data = &tegra_wm8903_data_legacy }, + { .compatible = "nvidia,tegra-audio-wm8903-seaboard", .data = &tegra_wm8903_data_legacy }, + { .compatible = "nvidia,tegra-audio-wm8903-ventana", .data = &tegra_wm8903_data_legacy }, + { .compatible = "nvidia,tegra-audio-wm8903", .data = &tegra_wm8903_data }, + {}, +}; +MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); + +static struct platform_driver tegra_wm8903_driver = { + .driver = { + .name = "tegra-wm8903", + .of_match_table = tegra_wm8903_of_match, + .pm = &snd_soc_pm_ops, + }, + .probe = tegra_asoc_machine_probe, +}; +module_platform_driver(tegra_wm8903_driver); + +MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); +MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); +MODULE_LICENSE("GPL"); |