ASoC: tegra: Add platform driver for rt5677 audio codec

The driver supports NVIDIA Tegra Ryu board

Sponsored: Google ChromeOS
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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 (file)
index 0000000..a4589cd
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt
@@ -0,0 +1,67 @@
+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:
+
+  * Headphone
+  * Speaker
+  * Headset Mic
+  * 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.
+
+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,mic-present-gpios: The GPIO that mic jack is plugged in
+- nvidia,dmic-clk-en-gpios : The GPIO that gates DMIC clock signal
+
+Example:
+
+sound {
+       compatible = "nvidia,tegra-audio-rt5677-ryu",
+               "nvidia,tegra-audio-rt5677";
+       nvidia,model = "NVIDIA Tegra Ryu";
+
+       nvidia,audio-routing =
+               "Headphone", "LOUT2",
+               "Headphone", "LOUT1",
+               "Headset Mic", "MICBIAS1",
+               "IN1P", "Headset Mic",
+               "IN1N", "Headset Mic",
+               "DMIC L1", "Internal Mic 1",
+               "DMIC R1", "Internal Mic 1",
+               "DMIC L2", "Internal Mic 2",
+               "DMIC R2", "Internal Mic 2",
+               "Speaker", "PDM1L",
+               "Speaker", "PDM1R";
+
+       nvidia,i2s-controller = <&tegra_i2s1>;
+       nvidia,audio-codec = <&rt5677>;
+
+       nvidia,hp-det-gpios = <&gpio TEGRA_GPIO(R, 7) GPIO_ACTIVE_HIGH>;
+       nvidia,mic-present-gpios = <&gpio TEGRA_GPIO(O, 5) GPIO_ACTIVE_LOW>;
+       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 31198cf..a6768f8 100644 (file)
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -128,3 +128,13 @@ 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
+       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 (file)
--- 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 (file)
index 0000000..e4cf978
--- /dev/null
+++ b/sound/soc/tegra/tegra_rt5677.c
@@ -0,0 +1,347 @@
+/*
+* 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 <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/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_mic_present;
+       int gpio_dmic_clk_en;
+};
+
+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;
+       }
+
+       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 = "Headphone",
+       .mask = SND_JACK_HEADPHONE,
+};
+static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
+       .name = "Headphone detection",
+       .report = SND_JACK_HEADPHONE,
+       .debounce_time = 150,
+};
+
+static struct snd_soc_jack tegra_rt5677_mic_jack;
+
+static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
+       .pin = "Headset Mic",
+       .mask = SND_JACK_MICROPHONE,
+};
+
+static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
+       .name = "Headset Mic detection",
+       .report = SND_JACK_MICROPHONE,
+       .debounce_time = 150,
+       .invert = 1
+};
+
+static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
+       SND_SOC_DAPM_SPK("Speaker", NULL),
+       SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
+       SND_SOC_DAPM_MIC("Headset Mic", 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("Speaker"),
+       SOC_DAPM_PIN_SWITCH("Headphone"),
+       SOC_DAPM_PIN_SWITCH("Headset Mic"),
+       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, "Headphone Jack", 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_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
+                       &tegra_rt5677_mic_jack);
+       snd_soc_jack_add_pins(&tegra_rt5677_mic_jack, 1,
+                       &tegra_rt5677_mic_jack_pins);
+
+       if (gpio_is_valid(machine->gpio_mic_present)) {
+               tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
+               snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
+                               &tegra_rt5677_mic_jack_gpio);
+       }
+
+       snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
+
+       return 0;
+}
+
+static int tegra_rt5677_card_remove(struct snd_soc_card *card)
+{
+       struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
+
+       if (gpio_is_valid(machine->gpio_hp_det)) {
+               snd_soc_jack_free_gpios(&tegra_rt5677_hp_jack, 1,
+                               &tegra_rt5677_hp_jack_gpio);
+       }
+
+       if (gpio_is_valid(machine->gpio_mic_present)) {
+               snd_soc_jack_free_gpios(&tegra_rt5677_mic_jack, 1,
+                               &tegra_rt5677_mic_jack_gpio);
+       }
+
+       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,
+};
+
+static struct snd_soc_card snd_soc_tegra_rt5677 = {
+       .name = "tegra-rt5677",
+       .owner = THIS_MODULE,
+       .remove = tegra_rt5677_card_remove,
+       .dai_link = &tegra_rt5677_dai,
+       .num_links = 1,
+       .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;
+
+       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_mic_present = of_get_named_gpio(np,
+                       "nvidia,mic-present-gpios", 0);
+       if (machine->gpio_mic_present == -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;
+
+       tegra_rt5677_dai.codec_of_node = of_parse_phandle(np,
+                       "nvidia,audio-codec", 0);
+       if (!tegra_rt5677_dai.codec_of_node) {
+               dev_err(&pdev->dev,
+                       "Property 'nvidia,audio-codec' missing or invalid\n");
+               ret = -EINVAL;
+               goto err;
+       }
+
+       tegra_rt5677_dai.cpu_of_node = of_parse_phandle(np,
+                       "nvidia,i2s-controller", 0);
+       if (!tegra_rt5677_dai.cpu_of_node) {
+               dev_err(&pdev->dev,
+                       "Property 'nvidia,i2s-controller' missing or invalid\n");
+               ret = -EINVAL;
+               goto err;
+       }
+       tegra_rt5677_dai.platform_of_node = tegra_rt5677_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_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_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 <anatol@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);