| /* |
| * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec. |
| * |
| * Author: Stephen Warren <swarren@nvidia.com> |
| * 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 <asm/mach-types.h> |
| |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/slab.h> |
| #include <linux/gpio.h> |
| |
| #include <mach/tegra_wm8903_pdata.h> |
| |
| #include <sound/core.h> |
| #include <sound/jack.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| |
| #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-wm8903" |
| |
| #define GPIO_SPKR_EN BIT(0) |
| #define GPIO_HP_MUTE BIT(1) |
| #define GPIO_INT_MIC_EN BIT(2) |
| #define GPIO_EXT_MIC_EN BIT(3) |
| #define GPIO_HP_DET BIT(4) |
| |
| struct tegra_wm8903 { |
| struct tegra_asoc_utils_data util_data; |
| struct tegra_wm8903_platform_data *pdata; |
| int gpio_requested; |
| }; |
| |
| 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_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_card *card = codec->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_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; |
| } |
| |
| 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); |
| struct tegra_wm8903_platform_data *pdata = machine->pdata; |
| |
| if (!(machine->gpio_requested & GPIO_SPKR_EN)) |
| return 0; |
| |
| gpio_set_value_cansleep(pdata->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); |
| struct tegra_wm8903_platform_data *pdata = machine->pdata; |
| |
| if (!(machine->gpio_requested & GPIO_HP_MUTE)) |
| return 0; |
| |
| gpio_set_value_cansleep(pdata->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_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 Jack", NULL, "MICBIAS"}, |
| {"IN1L", NULL, "Mic Jack"}, |
| }; |
| |
| static const struct snd_soc_dapm_route seaboard_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 Jack", NULL, "MICBIAS"}, |
| {"IN1R", NULL, "Mic Jack"}, |
| }; |
| |
| static const struct snd_soc_dapm_route kaen_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 Jack", NULL, "MICBIAS"}, |
| {"IN2R", NULL, "Mic Jack"}, |
| }; |
| |
| static const struct snd_soc_dapm_route aebl_audio_map[] = { |
| {"Headphone Jack", NULL, "HPOUTR"}, |
| {"Headphone Jack", NULL, "HPOUTL"}, |
| {"Int Spk", NULL, "LINEOUTR"}, |
| {"Int Spk", NULL, "LINEOUTL"}, |
| {"Mic Jack", NULL, "MICBIAS"}, |
| {"IN1R", NULL, "Mic Jack"}, |
| }; |
| |
| 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_codec *codec = rtd->codec; |
| struct snd_soc_dapm_context *dapm = &codec->dapm; |
| struct snd_soc_card *card = codec->card; |
| struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card); |
| struct tegra_wm8903_platform_data *pdata = machine->pdata; |
| int ret; |
| |
| if (gpio_is_valid(pdata->gpio_spkr_en)) { |
| ret = gpio_request(pdata->gpio_spkr_en, "spkr_en"); |
| if (ret) { |
| dev_err(card->dev, "cannot get spkr_en gpio\n"); |
| return ret; |
| } |
| machine->gpio_requested |= GPIO_SPKR_EN; |
| |
| gpio_direction_output(pdata->gpio_spkr_en, 0); |
| } |
| |
| if (gpio_is_valid(pdata->gpio_hp_mute)) { |
| ret = gpio_request(pdata->gpio_hp_mute, "hp_mute"); |
| if (ret) { |
| dev_err(card->dev, "cannot get hp_mute gpio\n"); |
| return ret; |
| } |
| machine->gpio_requested |= GPIO_HP_MUTE; |
| |
| gpio_direction_output(pdata->gpio_hp_mute, 1); |
| } |
| |
| if (gpio_is_valid(pdata->gpio_int_mic_en)) { |
| 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; |
| } |
| machine->gpio_requested |= GPIO_INT_MIC_EN; |
| |
| /* Disable int mic; enable signal is active-high */ |
| gpio_direction_output(pdata->gpio_int_mic_en, 0); |
| } |
| |
| if (gpio_is_valid(pdata->gpio_ext_mic_en)) { |
| 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; |
| } |
| machine->gpio_requested |= GPIO_EXT_MIC_EN; |
| |
| /* Enable ext mic; enable signal is active-low */ |
| gpio_direction_output(pdata->gpio_ext_mic_en, 0); |
| } |
| |
| if (gpio_is_valid(pdata->gpio_hp_det)) { |
| tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det; |
| snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE, |
| &tegra_wm8903_hp_jack); |
| snd_soc_jack_add_pins(&tegra_wm8903_hp_jack, |
| ARRAY_SIZE(tegra_wm8903_hp_jack_pins), |
| tegra_wm8903_hp_jack_pins); |
| snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack, |
| 1, |
| &tegra_wm8903_hp_jack_gpio); |
| machine->gpio_requested |= GPIO_HP_DET; |
| } |
| |
| snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE, |
| &tegra_wm8903_mic_jack); |
| snd_soc_jack_add_pins(&tegra_wm8903_mic_jack, |
| ARRAY_SIZE(tegra_wm8903_mic_jack_pins), |
| tegra_wm8903_mic_jack_pins); |
| wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE, |
| 0); |
| |
| snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); |
| |
| return 0; |
| } |
| |
| static struct snd_soc_dai_link tegra_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 = tegra_wm8903_init, |
| .ops = &tegra_wm8903_ops, |
| }; |
| |
| static struct snd_soc_card snd_soc_tegra_wm8903 = { |
| .name = "tegra-wm8903", |
| .dai_link = &tegra_wm8903_dai, |
| .num_links = 1, |
| |
| .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 __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = &snd_soc_tegra_wm8903; |
| struct tegra_wm8903 *machine; |
| struct tegra_wm8903_platform_data *pdata; |
| int ret; |
| |
| pdata = pdev->dev.platform_data; |
| if (!pdata) { |
| dev_err(&pdev->dev, "No platform data supplied\n"); |
| return -EINVAL; |
| } |
| |
| machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903), |
| GFP_KERNEL); |
| if (!machine) { |
| dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n"); |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| machine->pdata = pdata; |
| |
| ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); |
| if (ret) |
| goto err; |
| |
| card->dev = &pdev->dev; |
| platform_set_drvdata(pdev, card); |
| snd_soc_card_set_drvdata(card, machine); |
| |
| if (machine_is_harmony()) { |
| card->dapm_routes = harmony_audio_map; |
| card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map); |
| } else if (machine_is_seaboard()) { |
| card->dapm_routes = seaboard_audio_map; |
| card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map); |
| } else if (machine_is_kaen()) { |
| card->dapm_routes = kaen_audio_map; |
| card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map); |
| } else { |
| card->dapm_routes = aebl_audio_map; |
| card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map); |
| } |
| |
| 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 __devexit 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); |
| struct tegra_wm8903_platform_data *pdata = machine->pdata; |
| |
| if (machine->gpio_requested & GPIO_HP_DET) |
| snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, |
| 1, |
| &tegra_wm8903_hp_jack_gpio); |
| if (machine->gpio_requested & GPIO_EXT_MIC_EN) |
| gpio_free(pdata->gpio_ext_mic_en); |
| if (machine->gpio_requested & GPIO_INT_MIC_EN) |
| gpio_free(pdata->gpio_int_mic_en); |
| if (machine->gpio_requested & GPIO_HP_MUTE) |
| gpio_free(pdata->gpio_hp_mute); |
| if (machine->gpio_requested & GPIO_SPKR_EN) |
| gpio_free(pdata->gpio_spkr_en); |
| machine->gpio_requested = 0; |
| |
| snd_soc_unregister_card(card); |
| |
| tegra_asoc_utils_fini(&machine->util_data); |
| |
| return 0; |
| } |
| |
| static struct platform_driver tegra_wm8903_driver = { |
| .driver = { |
| .name = DRV_NAME, |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = tegra_wm8903_driver_probe, |
| .remove = __devexit_p(tegra_wm8903_driver_remove), |
| }; |
| module_platform_driver(tegra_wm8903_driver); |
| |
| MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:" DRV_NAME); |