+/*
+ * 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_INT_MIC_EN BIT(1)
+#define GPIO_EXT_MIC_EN BIT(2)
+
+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, 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(&machine->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 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_gpios[] = {
+ {
+ .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_codec *codec = w->codec;
+ 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;
+
+ gpio_set_value_cansleep(pdata->gpio_spkr_en,
+ 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", 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 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;
+
+ 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);
+
+ 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);
+
+ 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);
+
+ ret = snd_soc_add_controls(codec, tegra_wm8903_controls,
+ ARRAY_SIZE(tegra_wm8903_controls));
+ if (ret < 0)
+ return ret;
+
+ snd_soc_dapm_new_controls(dapm, tegra_wm8903_dapm_widgets,
+ ARRAY_SIZE(tegra_wm8903_dapm_widgets));
+
+ snd_soc_dapm_add_routes(dapm, harmony_audio_map,
+ ARRAY_SIZE(harmony_audio_map));
+
+ tegra_wm8903_hp_jack_gpios[0].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,
+ ARRAY_SIZE(tegra_wm8903_hp_jack_gpios),
+ tegra_wm8903_hp_jack_gpios);
+
+ 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, "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 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,
+};
+
+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;
+
+ 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;
+ }
+
+ machine = kzalloc(sizeof(struct tegra_wm8903), GFP_KERNEL);
+ if (!machine) {
+ dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
+ return -ENOMEM;
+ }
+
+ machine->pdata = pdata;
+
+ ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
+ if (ret)
+ goto err_free_machine;
+
+ card->dev = &pdev->dev;
+ platform_set_drvdata(pdev, card);
+ snd_soc_card_set_drvdata(card, machine);
+
+ 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(&machine->util_data);
+err_free_machine:
+ kfree(machine);
+ 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;
+
+ snd_soc_unregister_card(card);
+
+ snd_soc_card_set_drvdata(card, NULL);
+ platform_set_drvdata(pdev, NULL);
+ card->dev = NULL;
+
+ tegra_asoc_utils_fini(&machine->util_data);
+
+ 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_SPKR_EN)
+ gpio_free(pdata->gpio_spkr_en);
+
+ kfree(machine);
+
+ 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),
+};
+
+static int __init tegra_wm8903_modinit(void)
+{
+ return platform_driver_register(&tegra_wm8903_driver);
+}
+module_init(tegra_wm8903_modinit);
+
+static void __exit tegra_wm8903_modexit(void)
+{
+ platform_driver_unregister(&tegra_wm8903_driver);
+}
+module_exit(tegra_wm8903_modexit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
projects / firefly-linux-kernel-4.4.55.git / commitdiff