From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- sound/soc/tegra/tegra_wm8903.c | 398 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 398 insertions(+) create mode 100644 sound/soc/tegra/tegra_wm8903.c (limited to 'sound/soc/tegra/tegra_wm8903.c') diff --git a/sound/soc/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c new file mode 100644 index 000000000..21604009b --- /dev/null +++ b/sound/soc/tegra/tegra_wm8903.c @@ -0,0 +1,398 @@ +/* + * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec. + * + * Author: Stephen Warren + * 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 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "../codecs/wm8903.h" + +#include "tegra_asoc_utils.h" + +#define DRV_NAME "tegra-snd-wm8903" + +struct tegra_wm8903 { + int gpio_spkr_en; + int gpio_hp_det; + int gpio_hp_mute; + int gpio_int_mic_en; + int gpio_ext_mic_en; + struct tegra_asoc_utils_data util_data; +}; + +static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_card *card = rtd->card; + struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); + int srate, mclk; + int err; + + srate = params_rate(params); + 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; + + err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); + if (err < 0) { + dev_err(card->dev, "Can't configure clocks\n"); + return err; + } + + err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, + SND_SOC_CLOCK_IN); + if (err < 0) { + dev_err(card->dev, "codec_dai clock not set\n"); + return err; + } + + return 0; +} + +static struct snd_soc_ops tegra_wm8903_ops = { + .hw_params = tegra_wm8903_hw_params, +}; + +static struct snd_soc_jack tegra_wm8903_hp_jack; + +static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = { + { + .pin = "Headphone Jack", + .mask = SND_JACK_HEADPHONE, + }, +}; + +static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = { + .name = "headphone detect", + .report = SND_JACK_HEADPHONE, + .debounce_time = 150, + .invert = 1, +}; + +static struct snd_soc_jack tegra_wm8903_mic_jack; + +static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = { + { + .pin = "Mic Jack", + .mask = SND_JACK_MICROPHONE, + }, +}; + +static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_dapm_context *dapm = w->dapm; + struct snd_soc_card *card = dapm->card; + struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); + + if (!gpio_is_valid(machine->gpio_spkr_en)) + return 0; + + gpio_set_value_cansleep(machine->gpio_spkr_en, + SND_SOC_DAPM_EVENT_ON(event)); + + return 0; +} + +static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_dapm_context *dapm = w->dapm; + struct snd_soc_card *card = dapm->card; + struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); + + if (!gpio_is_valid(machine->gpio_hp_mute)) + return 0; + + gpio_set_value_cansleep(machine->gpio_hp_mute, + !SND_SOC_DAPM_EVENT_ON(event)); + + return 0; +} + +static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = { + SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk), + SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp), + SND_SOC_DAPM_MIC("Mic Jack", NULL), +}; + +static const struct snd_kcontrol_new tegra_wm8903_controls[] = { + SOC_DAPM_PIN_SWITCH("Int Spk"), +}; + +static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_codec *codec = codec_dai->codec; + struct snd_soc_card *card = rtd->card; + struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); + + if (gpio_is_valid(machine->gpio_hp_det)) { + tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det; + snd_soc_card_jack_new(rtd->card, "Headphone Jack", + SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack, + tegra_wm8903_hp_jack_pins, + ARRAY_SIZE(tegra_wm8903_hp_jack_pins)); + snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack, + 1, + &tegra_wm8903_hp_jack_gpio); + } + + snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE, + &tegra_wm8903_mic_jack, + tegra_wm8903_mic_jack_pins, + ARRAY_SIZE(tegra_wm8903_mic_jack_pins)); + wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE, + 0); + + snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS"); + + return 0; +} + +static int tegra_wm8903_remove(struct snd_soc_card *card) +{ + struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]); + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_codec *codec = codec_dai->codec; + struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); + + if (gpio_is_valid(machine->gpio_hp_det)) { + snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1, + &tegra_wm8903_hp_jack_gpio); + } + + wm8903_mic_detect(codec, NULL, 0, 0); + + return 0; +} + +static struct snd_soc_dai_link tegra_wm8903_dai = { + .name = "WM8903", + .stream_name = "WM8903 PCM", + .codec_dai_name = "wm8903-hifi", + .init = tegra_wm8903_init, + .ops = &tegra_wm8903_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, +}; + +static struct snd_soc_card snd_soc_tegra_wm8903 = { + .name = "tegra-wm8903", + .owner = THIS_MODULE, + .dai_link = &tegra_wm8903_dai, + .num_links = 1, + .remove = tegra_wm8903_remove, + .controls = tegra_wm8903_controls, + .num_controls = ARRAY_SIZE(tegra_wm8903_controls), + .dapm_widgets = tegra_wm8903_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets), + .fully_routed = true, +}; + +static int tegra_wm8903_driver_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct snd_soc_card *card = &snd_soc_tegra_wm8903; + struct tegra_wm8903 *machine; + int ret; + + machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903), + GFP_KERNEL); + if (!machine) { + dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n"); + return -ENOMEM; + } + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + snd_soc_card_set_drvdata(card, machine); + + machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios", + 0); + if (machine->gpio_spkr_en == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (gpio_is_valid(machine->gpio_spkr_en)) { + ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en, + GPIOF_OUT_INIT_LOW, "spkr_en"); + if (ret) { + dev_err(card->dev, "cannot get spkr_en gpio\n"); + return ret; + } + } + + machine->gpio_hp_mute = of_get_named_gpio(np, "nvidia,hp-mute-gpios", + 0); + if (machine->gpio_hp_mute == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (gpio_is_valid(machine->gpio_hp_mute)) { + ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_mute, + GPIOF_OUT_INIT_HIGH, "hp_mute"); + if (ret) { + dev_err(card->dev, "cannot get hp_mute gpio\n"); + return ret; + } + } + + machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0); + if (machine->gpio_hp_det == -EPROBE_DEFER) + return -EPROBE_DEFER; + + machine->gpio_int_mic_en = of_get_named_gpio(np, + "nvidia,int-mic-en-gpios", 0); + if (machine->gpio_int_mic_en == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (gpio_is_valid(machine->gpio_int_mic_en)) { + /* Disable int mic; enable signal is active-high */ + ret = devm_gpio_request_one(&pdev->dev, + machine->gpio_int_mic_en, + GPIOF_OUT_INIT_LOW, "int_mic_en"); + if (ret) { + dev_err(card->dev, "cannot get int_mic_en gpio\n"); + return ret; + } + } + + machine->gpio_ext_mic_en = of_get_named_gpio(np, + "nvidia,ext-mic-en-gpios", 0); + if (machine->gpio_ext_mic_en == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (gpio_is_valid(machine->gpio_ext_mic_en)) { + /* Enable ext mic; enable signal is active-low */ + ret = devm_gpio_request_one(&pdev->dev, + machine->gpio_ext_mic_en, + GPIOF_OUT_INIT_LOW, "ext_mic_en"); + if (ret) { + dev_err(card->dev, "cannot get ext_mic_en gpio\n"); + return ret; + } + } + + ret = snd_soc_of_parse_card_name(card, "nvidia,model"); + if (ret) + goto err; + + ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); + if (ret) + goto err; + + tegra_wm8903_dai.codec_of_node = of_parse_phandle(np, + "nvidia,audio-codec", 0); + if (!tegra_wm8903_dai.codec_of_node) { + dev_err(&pdev->dev, + "Property 'nvidia,audio-codec' missing or invalid\n"); + ret = -EINVAL; + goto err; + } + + tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np, + "nvidia,i2s-controller", 0); + if (!tegra_wm8903_dai.cpu_of_node) { + dev_err(&pdev->dev, + "Property 'nvidia,i2s-controller' missing or invalid\n"); + ret = -EINVAL; + goto err; + } + + tegra_wm8903_dai.platform_of_node = tegra_wm8903_dai.cpu_of_node; + + ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); + if (ret) + goto err; + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", + ret); + goto err_fini_utils; + } + + return 0; + +err_fini_utils: + tegra_asoc_utils_fini(&machine->util_data); +err: + return ret; +} + +static int tegra_wm8903_driver_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); + + snd_soc_unregister_card(card); + + tegra_asoc_utils_fini(&machine->util_data); + + return 0; +} + +static const struct of_device_id tegra_wm8903_of_match[] = { + { .compatible = "nvidia,tegra-audio-wm8903", }, + {}, +}; + +static struct platform_driver tegra_wm8903_driver = { + .driver = { + .name = DRV_NAME, + .pm = &snd_soc_pm_ops, + .of_match_table = tegra_wm8903_of_match, + }, + .probe = tegra_wm8903_driver_probe, + .remove = tegra_wm8903_driver_remove, +}; +module_platform_driver(tegra_wm8903_driver); + +MODULE_AUTHOR("Stephen Warren "); +MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match); -- cgit v1.2.3-54-g00ecf