[PATCH] ASoc: tegra: Add platform driver for rt5677 audio codec

Anatol Pomozov

2014-09-30 21:52:19 UTC

The driver will support Ryu board

Signed-off-by: Anatol Pomozov <***@google.com>
---
.../bindings/sound/nvidia,tegra-audio-rt5677.txt | 70 +++++
sound/soc/tegra/Kconfig | 11 +
sound/soc/tegra/Makefile | 2 +
sound/soc/tegra/tegra_rt5677.c | 336 +++++++++++++++++++++
4 files changed, 419 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt
create mode 100644 sound/soc/tegra/tegra_rt5677.c

diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt
new file mode 100644
index 0000000..a42c96a
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt
@@ -0,0 +1,70 @@
+NVIDIA Tegra audio complex, with RT5677 CODEC
+
+Required properties:
+- compatible : "nvidia,tegra-audio-rt5677"
+- clocks : Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entries:
+ - pll_a
+ - pll_a_out0
+ - mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk)
+- nvidia,model : The user-visible name of this sound complex.
+- nvidia,audio-routing : A list of the connections between audio components.
+ Each entry is a pair of strings, the first being the connection's sink,
+ the second being the connection's source. Valid names for sources and
+ sinks are the RT5677's pins (as documented in its binding), and the jacks
+ on the board:
+
+ * Headphones
+ * Speakers
+ * Mic Jack
+ * Internal Mic 1
+ * Internal Mic 2
+
+- nvidia,i2s-controller : The phandle of the Tegra I2S controller that's
+ connected to the CODEC.
+- nvidia,audio-codec : The phandle of the RT5677 audio codec. This binding
+ assumes that AIF1 on the CODEC is connected to Tegra.
+- nvidia,speaker-codec: The phandle of the SSM4567 amplifier. This binding
+ assumes that AIF2 on the audio CODEC is connected to this speaker amplifier.
+
+Optional properties:
+- nvidia,hp-det-gpios : The GPIO that detects headphones are plugged in
+- nvidia,hp-en-gpios : The GPIO that enables headphone amplifier
+- nvidia,dmic-clk-en-gpios : The GPIO that gates DMIC clock
+
+Example:
+
+sound {
+ compatible = "nvidia,tegra-audio-rt5677-ryu",
+ "nvidia,tegra-audio-rt5677";
+ nvidia,model = "NVIDIA Tegra Ryu";
+
+ nvidia,audio-routing =
+ // rt5677 codec
+ "Headphones", "LOUT2",
+ "Headphones", "LOUT1",
+ "Mic Jack", "MICBIAS1",
+ "IN1P", "Mic Jack",
+ "IN1N", "Mic Jack",
+ "DMIC L1", "Internal Mic 1",
+ "DMIC R1", "Internal Mic 1",
+ "DMIC L2", "Internal Mic 2",
+ "DMIC R2", "Internal Mic 2",
+ // speaker amp
+ "DAC", "AIF2TX",
+ "Speakers", "OUT";
+
+ nvidia,i2s-controller = <&tegra_i2s1>;
+ nvidia,audio-codec = <&rt5677>;
+ nvidia,speaker-codec = <&ssm4567>;
+
+ nvidia,hp-det-gpios = <&gpio TEGRA_GPIO(R, 7) GPIO_ACTIVE_HIGH>;
+ nvidia,hp-en-gpios = <&rt5677 1 GPIO_ACTIVE_HIGH>;
+ nvidia,dmic-clk-en-gpios = <&rt5677 2 GPIO_ACTIVE_HIGH>;
+
+ clocks = <&tegra_car TEGRA124_CLK_PLL_A>,
+ <&tegra_car TEGRA124_CLK_PLL_A_OUT0>,
+ <&tegra_car TEGRA124_CLK_EXTERN1>;
+ clock-names = "pll_a", "pll_a_out0", "mclk";
+};
diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index 31198cf7..c30611e 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -128,3 +128,14 @@ config SND_SOC_TEGRA_MAX98090
help
Say Y or M here if you want to add support for SoC audio on Tegra
boards using the MAX98090 codec, such as Venice2.
+
+config SND_SOC_TEGRA_RT5677
+ tristate "SoC Audio support for Tegra boards using a RT5677 codec"
+ depends on SND_SOC_TEGRA && I2C && GPIOLIB
+ select SND_SOC_TEGRA20_I2S if ARCH_TEGRA_2x_SOC
+ select SND_SOC_TEGRA30_I2S if ARCH_TEGRA_3x_SOC
+ select SND_SOC_RT5677
+ select SND_SOC_SSM4567
+ help
+ Say Y or M here if you want to add support for SoC audio on Tegra
+ boards using the RT5677 codec, such as Ryu.
diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile
index 5ae588c..9171655 100644
--- a/sound/soc/tegra/Makefile
+++ b/sound/soc/tegra/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_SND_SOC_TEGRA30_I2S) += snd-soc-tegra30-i2s.o

# Tegra machine Support
snd-soc-tegra-rt5640-objs := tegra_rt5640.o
+snd-soc-tegra-rt5677-objs := tegra_rt5677.o
snd-soc-tegra-wm8753-objs := tegra_wm8753.o
snd-soc-tegra-wm8903-objs := tegra_wm8903.o
snd-soc-tegra-wm9712-objs := tegra_wm9712.o
@@ -27,6 +28,7 @@ snd-soc-tegra-alc5632-objs := tegra_alc5632.o
snd-soc-tegra-max98090-objs := tegra_max98090.o

obj-$(CONFIG_SND_SOC_TEGRA_RT5640) += snd-soc-tegra-rt5640.o
+obj-$(CONFIG_SND_SOC_TEGRA_RT5677) += snd-soc-tegra-rt5677.o
obj-$(CONFIG_SND_SOC_TEGRA_WM8753) += snd-soc-tegra-wm8753.o
obj-$(CONFIG_SND_SOC_TEGRA_WM8903) += snd-soc-tegra-wm8903.o
obj-$(CONFIG_SND_SOC_TEGRA_WM9712) += snd-soc-tegra-wm9712.o
diff --git a/sound/soc/tegra/tegra_rt5677.c b/sound/soc/tegra/tegra_rt5677.c
new file mode 100644
index 0000000..7503cd2
--- /dev/null
+++ b/sound/soc/tegra/tegra_rt5677.c
@@ -0,0 +1,336 @@
+/*
+* tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
+ *
+ * Copyright (c) 2014, The Chromium OS Authors. 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 <***@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/rt5677.h"
+
+#include "tegra_asoc_utils.h"
+
+#define DRV_NAME "tegra-snd-rt5677"
+
+struct tegra_rt5677 {
+ struct tegra_asoc_utils_data util_data;
+ int gpio_hp_det;
+ int gpio_hp_en;
+ int gpio_dmic_clk_en;
+};
+
+static struct snd_soc_pcm_stream tegra_rt5677_spk_params = {
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+};
+
+static int tegra_rt5677_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_rt5677 *machine = snd_soc_card_get_drvdata(card);
+ int srate, mclk, 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, RT5677_SCLK_S_MCLK, mclk,
+ SND_SOC_CLOCK_IN);
+ if (err < 0) {
+ dev_err(card->dev, "codec_dai clock not set\n");
+ return err;
+ }
+
+ /* both dai interfaces use the same bit clock,
+ * set rate for both interfaces the same, otherwise driver might not
+ * be able to configure clock divider.
+ */
+ tegra_rt5677_spk_params.rate_min = srate;
+ tegra_rt5677_spk_params.rate_max = srate;
+
+ return 0;
+}
+
+static int tegra_rt5677_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_rt5677 *machine = snd_soc_card_get_drvdata(card);
+
+ if (!gpio_is_valid(machine->gpio_hp_en))
+ return 0;
+
+ gpio_set_value_cansleep(machine->gpio_hp_en,
+ SND_SOC_DAPM_EVENT_ON(event));
+
+ return 0;
+}
+
+static struct snd_soc_ops tegra_rt5677_ops = {
+ .hw_params = tegra_rt5677_asoc_hw_params,
+};
+
+static struct snd_soc_jack tegra_rt5677_hp_jack;
+
+static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
+ .pin = "Headphones",
+ .mask = SND_JACK_HEADPHONE,
+};
+
+static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
+ .name = "Headphones detection",
+ .report = SND_JACK_HEADPHONE,
+ .debounce_time = 150,
+};
+
+static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
+ SND_SOC_DAPM_SPK("Speakers", NULL),
+ SND_SOC_DAPM_HP("Headphones", tegra_rt5677_event_hp),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+ SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
+ SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
+};
+
+static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Speakers"),
+ SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
+ SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
+};
+
+static int tegra_rt5677_asoc_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_dapm_context *dapm = &codec->dapm;
+ struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
+
+ snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
+ &tegra_rt5677_hp_jack);
+ snd_soc_jack_add_pins(&tegra_rt5677_hp_jack, 1,
+ &tegra_rt5677_hp_jack_pins);
+
+ if (gpio_is_valid(machine->gpio_hp_det)) {
+ tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
+ snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
+ &tegra_rt5677_hp_jack_gpio);
+ }
+
+ snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
+
+ return 0;
+}
+
+static struct snd_soc_dai_link tegra_rt5677_dai[] = {
+{
+ .name = "RT5677",
+ .stream_name = "RT5677 PCM",
+ .codec_dai_name = "rt5677-aif1",
+ .init = tegra_rt5677_asoc_init,
+ .ops = &tegra_rt5677_ops,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+},
+{
+ .name = "SSM4567",
+ .stream_name = "Speaker",
+ .cpu_dai_name = "rt5677-aif2",
+ .codec_dai_name = "ssm4567-hifi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .params = &tegra_rt5677_spk_params,
+ .playback_only = true,
+}
+};
+
+static struct snd_soc_card snd_soc_tegra_rt5677 = {
+ .name = "tegra-rt5677",
+ .owner = THIS_MODULE,
+ .dai_link = tegra_rt5677_dai,
+ .num_links = ARRAY_SIZE(tegra_rt5677_dai),
+ .controls = tegra_rt5677_controls,
+ .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
+ .dapm_widgets = tegra_rt5677_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
+ .fully_routed = true,
+};
+
+static int tegra_rt5677_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct snd_soc_card *card = &snd_soc_tegra_rt5677;
+ struct tegra_rt5677 *machine;
+ int ret;
+ struct snd_soc_dai_link *codec_dai = &tegra_rt5677_dai[0];
+ struct snd_soc_dai_link *speaker_dai = &tegra_rt5677_dai[1];
+
+ machine = devm_kzalloc(&pdev->dev,
+ sizeof(struct tegra_rt5677), GFP_KERNEL);
+ if (!machine)
+ 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(np, "nvidia,hp-det-gpios", 0);
+ if (machine->gpio_hp_det == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
+ if (machine->gpio_hp_en == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ if (gpio_is_valid(machine->gpio_hp_en)) {
+ ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
+ GPIOF_OUT_INIT_LOW, "hp_en");
+ if (ret) {
+ dev_err(card->dev, "cannot get hp_en gpio\n");
+ return ret;
+ }
+ }
+
+ machine->gpio_dmic_clk_en = of_get_named_gpio(np,
+ "nvidia,dmic-clk-en-gpios", 0);
+ if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
+ ret = devm_gpio_request_one(&pdev->dev,
+ machine->gpio_dmic_clk_en,
+ GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
+ if (ret) {
+ dev_err(card->dev, "cannot get dmic_clk_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;
+
+ codec_dai->codec_of_node = of_parse_phandle(np,
+ "nvidia,audio-codec", 0);
+ if (!codec_dai->codec_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'nvidia,audio-codec' missing or invalid\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ codec_dai->cpu_of_node = of_parse_phandle(np,
+ "nvidia,i2s-controller", 0);
+ if (!codec_dai->cpu_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'nvidia,i2s-controller' missing or invalid\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ codec_dai->platform_of_node = codec_dai->cpu_of_node;
+
+ speaker_dai->codec_of_node = of_parse_phandle(np,
+ "nvidia,speaker-codec", 0);
+ if (!speaker_dai->codec_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'nvidia,speaker-codec' missing or invalid\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ speaker_dai->cpu_of_node = codec_dai->codec_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_rt5677_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
+
+ snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1,
+ &tegra_rt5677_hp_jack_gpio);
+
+ snd_soc_unregister_card(card);
+
+ tegra_asoc_utils_fini(&machine->util_data);
+
+ return 0;
+}
+
+static const struct of_device_id tegra_rt5677_of_match[] = {
+ { .compatible = "nvidia,tegra-audio-rt5677", },
+ {},
+};
+
+static struct platform_driver tegra_rt5677_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = tegra_rt5677_of_match,
+ },
+ .probe = tegra_rt5677_probe,
+ .remove = tegra_rt5677_remove,
+};
+module_platform_driver(tegra_rt5677_driver);
+
+MODULE_AUTHOR("Anatol Pomozov <***@google.com>");
+MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);

--
2.1.0.rc2.206.gedb03e5