--- /dev/null
+/*
+* tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
+ *
+ * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (C) 2010-2012 - NVIDIA, Inc.
+ * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
+ * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
+ * Copyright 2007 Wolfson Microelectronics PLC.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "../codecs/rt5640.h"
+
+#include "tegra_asoc_utils.h"
+
+#define DRV_NAME "tegra-snd-rt5640"
+
+struct tegra_rt5640 {
+ struct tegra_asoc_utils_data util_data;
+ int gpio_hp_det;
+ enum of_gpio_flags gpio_hp_det_flags;
+};
+
+static int tegra_rt5640_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_card *card = rtd->card;
+ struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
+ int srate, mclk;
+ int err;
+
+ srate = params_rate(params);
+ mclk = 256 * srate;
+
+ 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, RT5640_SCLK_S_MCLK, 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_rt5640_ops = {
+ .hw_params = tegra_rt5640_asoc_hw_params,
+};
+
+static struct snd_soc_jack tegra_rt5640_hp_jack;
+
+static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
+ {
+ .pin = "Headphones",
+ .mask = SND_JACK_HEADPHONE,
+ },
+};
+
+static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
+ .name = "Headphone detection",
+ .report = SND_JACK_HEADPHONE,
+ .debounce_time = 150,
+ .invert = 1,
+};
+
+static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphones", NULL),
+ SND_SOC_DAPM_SPK("Speakers", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Speakers"),
+};
+
+static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
+
+ snd_soc_card_jack_new(rtd->card, "Headphones", SND_JACK_HEADPHONE,
+ &tegra_rt5640_hp_jack, tegra_rt5640_hp_jack_pins,
+ ARRAY_SIZE(tegra_rt5640_hp_jack_pins));
+
+ if (gpio_is_valid(machine->gpio_hp_det)) {
+ tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
+ tegra_rt5640_hp_jack_gpio.invert =
+ !!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
+ snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
+ 1,
+ &tegra_rt5640_hp_jack_gpio);
+ }
+
+ return 0;
+}
+
+static int tegra_rt5640_card_remove(struct snd_soc_card *card)
+{
+ struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
+
+ if (gpio_is_valid(machine->gpio_hp_det)) {
+ snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
+ &tegra_rt5640_hp_jack_gpio);
+ }
+
+ return 0;
+}
+
+static struct snd_soc_dai_link tegra_rt5640_dai = {
+ .name = "RT5640",
+ .stream_name = "RT5640 PCM",
+ .codec_dai_name = "rt5640-aif1",
+ .init = tegra_rt5640_asoc_init,
+ .ops = &tegra_rt5640_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_rt5640 = {
+ .name = "tegra-rt5640",
+ .owner = THIS_MODULE,
+ .remove = tegra_rt5640_card_remove,
+ .dai_link = &tegra_rt5640_dai,
+ .num_links = 1,
+ .controls = tegra_rt5640_controls,
+ .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
+ .dapm_widgets = tegra_rt5640_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
+ .fully_routed = true,
+};
+
+static int tegra_rt5640_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &snd_soc_tegra_rt5640;
+ struct tegra_rt5640 *machine;
+ int ret;
+
+ machine = devm_kzalloc(&pdev->dev,
+ sizeof(struct tegra_rt5640), GFP_KERNEL);
+ if (!machine) {
+ dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
+ return -ENOMEM;
+ }
+
+ card->dev = &pdev->dev;
+ platform_set_drvdata(pdev, card);
+ snd_soc_card_set_drvdata(card, machine);
+
+ machine->gpio_hp_det = of_get_named_gpio_flags(
+ np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
+ if (machine->gpio_hp_det == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ 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_rt5640_dai.codec_of_node = of_parse_phandle(np,
+ "nvidia,audio-codec", 0);
+ if (!tegra_rt5640_dai.codec_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'nvidia,audio-codec' missing or invalid\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
+ "nvidia,i2s-controller", 0);
+ if (!tegra_rt5640_dai.cpu_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'nvidia,i2s-controller' missing or invalid\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ tegra_rt5640_dai.platform_of_node = tegra_rt5640_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_rt5640_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct tegra_rt5640 *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_rt5640_of_match[] = {
+ { .compatible = "nvidia,tegra-audio-rt5640", },
+ {},
+};
+
+static struct platform_driver tegra_rt5640_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = tegra_rt5640_of_match,
+ },
+ .probe = tegra_rt5640_probe,
+ .remove = tegra_rt5640_remove,
+};
+module_platform_driver(tegra_rt5640_driver);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
Code Review / kvmfornfv.git / blobdiff