/* * harmony.c - Harmony machine ASoC driver * * Author: Stephen Warren * Copyright (C) 2010-2011 - 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 #include "../codecs/wm8903.h" #include "tegra_das.h" #include "tegra_i2s.h" #include "tegra_pcm.h" #include "tegra_asoc_utils.h" #define DRV_NAME "tegra-snd-harmony" #define GPIO_SPKR_EN BIT(0) #define GPIO_INT_MIC_EN BIT(1) #define GPIO_EXT_MIC_EN BIT(2) struct tegra_harmony { struct tegra_asoc_utils_data util_data; struct harmony_audio_platform_data *pdata; int gpio_requested; }; static int harmony_asoc_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_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_codec *codec = rtd->codec; struct snd_soc_card *card = codec->card; struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card); int srate, mclk, mclk_change; 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(&harmony->util_data, srate, mclk, &mclk_change); if (err < 0) { dev_err(card->dev, "Can't configure clocks\n"); return err; } err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (err < 0) { dev_err(card->dev, "codec_dai fmt not set\n"); return err; } err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); if (err < 0) { dev_err(card->dev, "cpu_dai fmt not set\n"); return err; } if (mclk_change) { 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 harmony_asoc_ops = { .hw_params = harmony_asoc_hw_params, }; static struct snd_soc_jack harmony_hp_jack; static struct snd_soc_jack_pin harmony_hp_jack_pins[] = { { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE, }, }; static struct snd_soc_jack_gpio harmony_hp_jack_gpios[] = { { .name = "headphone detect", .report = SND_JACK_HEADPHONE, .debounce_time = 150, .invert = 1, } }; static struct snd_soc_jack harmony_mic_jack; static struct snd_soc_jack_pin harmony_mic_jack_pins[] = { { .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE, }, }; static int harmony_event_int_spk(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { struct snd_soc_codec *codec = w->codec; struct snd_soc_card *card = codec->card; struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card); struct harmony_audio_platform_data *pdata = harmony->pdata; gpio_set_value_cansleep(pdata->gpio_spkr_en, SND_SOC_DAPM_EVENT_ON(event)); return 0; } static const struct snd_soc_dapm_widget harmony_dapm_widgets[] = { SND_SOC_DAPM_SPK("Int Spk", harmony_event_int_spk), SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_MIC("Mic Jack", NULL), }; static const struct snd_soc_dapm_route harmony_audio_map[] = { {"Headphone Jack", NULL, "HPOUTR"}, {"Headphone Jack", NULL, "HPOUTL"}, {"Int Spk", NULL, "ROP"}, {"Int Spk", NULL, "RON"}, {"Int Spk", NULL, "LOP"}, {"Int Spk", NULL, "LON"}, {"Mic Bias", NULL, "Mic Jack"}, {"IN1L", NULL, "Mic Bias"}, }; static const struct snd_kcontrol_new harmony_controls[] = { SOC_DAPM_PIN_SWITCH("Int Spk"), }; static int harmony_asoc_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; struct snd_soc_card *card = codec->card; struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card); struct harmony_audio_platform_data *pdata = harmony->pdata; int ret; ret = gpio_request(pdata->gpio_spkr_en, "spkr_en"); if (ret) { dev_err(card->dev, "cannot get spkr_en gpio\n"); return ret; } harmony->gpio_requested |= GPIO_SPKR_EN; gpio_direction_output(pdata->gpio_spkr_en, 0); ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en"); if (ret) { dev_err(card->dev, "cannot get int_mic_en gpio\n"); return ret; } harmony->gpio_requested |= GPIO_INT_MIC_EN; /* Disable int mic; enable signal is active-high */ gpio_direction_output(pdata->gpio_int_mic_en, 0); ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en"); if (ret) { dev_err(card->dev, "cannot get ext_mic_en gpio\n"); return ret; } harmony->gpio_requested |= GPIO_EXT_MIC_EN; /* Enable ext mic; enable signal is active-low */ gpio_direction_output(pdata->gpio_ext_mic_en, 0); ret = snd_soc_add_controls(codec, harmony_controls, ARRAY_SIZE(harmony_controls)); if (ret < 0) return ret; snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets, ARRAY_SIZE(harmony_dapm_widgets)); snd_soc_dapm_add_routes(dapm, harmony_audio_map, ARRAY_SIZE(harmony_audio_map)); harmony_hp_jack_gpios[0].gpio = pdata->gpio_hp_det; snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, &harmony_hp_jack); snd_soc_jack_add_pins(&harmony_hp_jack, ARRAY_SIZE(harmony_hp_jack_pins), harmony_hp_jack_pins); snd_soc_jack_add_gpios(&harmony_hp_jack, ARRAY_SIZE(harmony_hp_jack_gpios), harmony_hp_jack_gpios); snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, &harmony_mic_jack); snd_soc_jack_add_pins(&harmony_mic_jack, ARRAY_SIZE(harmony_mic_jack_pins), harmony_mic_jack_pins); wm8903_mic_detect(codec, &harmony_mic_jack, SND_JACK_MICROPHONE, 0); snd_soc_dapm_force_enable_pin(dapm, "Mic Bias"); snd_soc_dapm_nc_pin(dapm, "IN3L"); snd_soc_dapm_nc_pin(dapm, "IN3R"); snd_soc_dapm_nc_pin(dapm, "LINEOUTL"); snd_soc_dapm_nc_pin(dapm, "LINEOUTR"); snd_soc_dapm_sync(dapm); return 0; } static struct snd_soc_dai_link harmony_wm8903_dai = { .name = "WM8903", .stream_name = "WM8903 PCM", .codec_name = "wm8903.0-001a", .platform_name = "tegra-pcm-audio", .cpu_dai_name = "tegra-i2s.0", .codec_dai_name = "wm8903-hifi", .init = harmony_asoc_init, .ops = &harmony_asoc_ops, }; static struct snd_soc_card snd_soc_harmony = { .name = "tegra-harmony", .dai_link = &harmony_wm8903_dai, .num_links = 1, }; static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev) { struct snd_soc_card *card = &snd_soc_harmony; struct tegra_harmony *harmony; struct harmony_audio_platform_data *pdata; int ret; if (!machine_is_harmony()) { dev_err(&pdev->dev, "Not running on Tegra Harmony!\n"); return -ENODEV; } pdata = pdev->dev.platform_data; if (!pdata) { dev_err(&pdev->dev, "no platform data supplied\n"); return -EINVAL; } harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL); if (!harmony) { dev_err(&pdev->dev, "Can't allocate tegra_harmony\n"); return -ENOMEM; } harmony->pdata = pdata; ret = tegra_asoc_utils_init(&harmony->util_data, &pdev->dev); if (ret) goto err_free_harmony; card->dev = &pdev->dev; platform_set_drvdata(pdev, card); snd_soc_card_set_drvdata(card, harmony); ret = snd_soc_register_card(card); if (ret) { dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); goto err_clear_drvdata; } return 0; err_clear_drvdata: snd_soc_card_set_drvdata(card, NULL); platform_set_drvdata(pdev, NULL); card->dev = NULL; tegra_asoc_utils_fini(&harmony->util_data); err_free_harmony: kfree(harmony); return ret; } static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card); struct harmony_audio_platform_data *pdata = harmony->pdata; snd_soc_unregister_card(card); snd_soc_card_set_drvdata(card, NULL); platform_set_drvdata(pdev, NULL); card->dev = NULL; tegra_asoc_utils_fini(&harmony->util_data); if (harmony->gpio_requested & GPIO_EXT_MIC_EN) gpio_free(pdata->gpio_ext_mic_en); if (harmony->gpio_requested & GPIO_INT_MIC_EN) gpio_free(pdata->gpio_int_mic_en); if (harmony->gpio_requested & GPIO_SPKR_EN) gpio_free(pdata->gpio_spkr_en); kfree(harmony); return 0; } static struct platform_driver tegra_snd_harmony_driver = { .driver = { .name = DRV_NAME, .owner = THIS_MODULE, .pm = &snd_soc_pm_ops, }, .probe = tegra_snd_harmony_probe, .remove = __devexit_p(tegra_snd_harmony_remove), }; static int __init snd_tegra_harmony_init(void) { return platform_driver_register(&tegra_snd_harmony_driver); } module_init(snd_tegra_harmony_init); static void __exit snd_tegra_harmony_exit(void) { platform_driver_unregister(&tegra_snd_harmony_driver); } module_exit(snd_tegra_harmony_exit); MODULE_AUTHOR("Stephen Warren "); MODULE_DESCRIPTION("Harmony machine ASoC driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DRV_NAME);