ASoC: tegra: add tegra+MAX98090 machine driver
Initially, this binding and driver only describe/support playback to headphones and speakers, and capture from the external microphone, with GPIO-based jack detection for the headphone jack only. This driver is useful for the Venice2 board. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Stephen Warren
Mark Brown
parent
6ce4eac1f6
commit
7637af2e17
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@ -0,0 +1,51 @@
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NVIDIA Tegra audio complex, with MAX98090 CODEC
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Required properties:
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- compatible : "nvidia,tegra-audio-max98090"
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- clocks : Must contain an entry for each entry in clock-names.
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See ../clocks/clock-bindings.txt for details.
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- clock-names : Must include the following entries:
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- pll_a
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- pll_a_out0
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- mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk)
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- nvidia,model : The user-visible name of this sound complex.
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- nvidia,audio-routing : A list of the connections between audio components.
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Each entry is a pair of strings, the first being the connection's sink,
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the second being the connection's source. Valid names for sources and
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sinks are the MAX98090's pins (as documented in its binding), and the jacks
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on the board:
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* Headphones
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* Speakers
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* Mic Jack
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- nvidia,i2s-controller : The phandle of the Tegra I2S controller that's
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connected to the CODEC.
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- nvidia,audio-codec : The phandle of the MAX98090 audio codec.
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Optional properties:
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- nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in
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Example:
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sound {
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compatible = "nvidia,tegra-audio-max98090-venice2",
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"nvidia,tegra-audio-max98090";
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nvidia,model = "NVIDIA Tegra Venice2";
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nvidia,audio-routing =
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"Headphones", "HPR",
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"Headphones", "HPL",
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"Speakers", "SPKR",
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"Speakers", "SPKL",
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"Mic Jack", "MICBIAS",
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"IN34", "Mic Jack";
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nvidia,i2s-controller = <&tegra_i2s1>;
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nvidia,audio-codec = <&acodec>;
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clocks = <&tegra_car TEGRA124_CLK_PLL_A>,
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<&tegra_car TEGRA124_CLK_PLL_A_OUT0>,
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<&tegra_car TEGRA124_CLK_EXTERN1>;
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clock-names = "pll_a", "pll_a_out0", "mclk";
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};
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@ -116,3 +116,13 @@ config SND_SOC_TEGRA_ALC5632
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help
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Say Y or M here if you want to add support for SoC audio on the
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Toshiba AC100 netbook.
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config SND_SOC_TEGRA_MAX98090
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tristate "SoC Audio support for Tegra boards using a MAX98090 codec"
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depends on SND_SOC_TEGRA && I2C && GPIOLIB
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select SND_SOC_TEGRA20_I2S if ARCH_TEGRA_2x_SOC
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select SND_SOC_TEGRA30_I2S if ARCH_TEGRA_3x_SOC
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select SND_SOC_MAX98090
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help
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Say Y or M here if you want to add support for SoC audio on Tegra
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boards using the MAX98090 codec, such as Venice2.
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@ -24,6 +24,7 @@ snd-soc-tegra-wm8903-objs := tegra_wm8903.o
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snd-soc-tegra-wm9712-objs := tegra_wm9712.o
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snd-soc-tegra-trimslice-objs := trimslice.o
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snd-soc-tegra-alc5632-objs := tegra_alc5632.o
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snd-soc-tegra-max98090-objs := tegra_max98090.o
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obj-$(CONFIG_SND_SOC_TEGRA_RT5640) += snd-soc-tegra-rt5640.o
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obj-$(CONFIG_SND_SOC_TEGRA_WM8753) += snd-soc-tegra-wm8753.o
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@ -31,3 +32,4 @@ obj-$(CONFIG_SND_SOC_TEGRA_WM8903) += snd-soc-tegra-wm8903.o
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obj-$(CONFIG_SND_SOC_TEGRA_WM9712) += snd-soc-tegra-wm9712.o
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obj-$(CONFIG_SND_SOC_TEGRA_TRIMSLICE) += snd-soc-tegra-trimslice.o
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obj-$(CONFIG_SND_SOC_TEGRA_ALC5632) += snd-soc-tegra-alc5632.o
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obj-$(CONFIG_SND_SOC_TEGRA_MAX98090) += snd-soc-tegra-max98090.o
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@ -0,0 +1,275 @@
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/*
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* Tegra machine ASoC driver for boards using a MAX90809 CODEC.
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*
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* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Based on code copyright/by:
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*
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* Copyright (C) 2010-2012 - NVIDIA, Inc.
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* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
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* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
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* Copyright 2007 Wolfson Microelectronics PLC.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <sound/core.h>
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#include <sound/jack.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "tegra_asoc_utils.h"
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#define DRV_NAME "tegra-snd-max98090"
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struct tegra_max98090 {
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struct tegra_asoc_utils_data util_data;
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int gpio_hp_det;
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};
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static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_codec *codec = codec_dai->codec;
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struct snd_soc_card *card = codec->card;
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struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
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int srate, mclk;
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int err;
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srate = params_rate(params);
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switch (srate) {
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case 8000:
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case 16000:
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case 24000:
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case 32000:
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case 48000:
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case 64000:
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case 96000:
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mclk = 12288000;
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break;
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case 11025:
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case 22050:
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case 44100:
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case 88200:
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mclk = 11289600;
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break;
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default:
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mclk = 12000000;
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break;
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}
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err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
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if (err < 0) {
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dev_err(card->dev, "Can't configure clocks\n");
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return err;
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}
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err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
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SND_SOC_CLOCK_IN);
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if (err < 0) {
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dev_err(card->dev, "codec_dai clock not set\n");
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return err;
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}
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return 0;
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}
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static struct snd_soc_ops tegra_max98090_ops = {
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.hw_params = tegra_max98090_asoc_hw_params,
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};
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static struct snd_soc_jack tegra_max98090_hp_jack;
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static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
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{
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.pin = "Headphones",
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.mask = SND_JACK_HEADPHONE,
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},
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};
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static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
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.name = "Headphone detection",
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.report = SND_JACK_HEADPHONE,
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.debounce_time = 150,
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.invert = 1,
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};
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static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphones", NULL),
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SND_SOC_DAPM_SPK("Speakers", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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};
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static const struct snd_kcontrol_new tegra_max98090_controls[] = {
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SOC_DAPM_PIN_SWITCH("Speakers"),
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};
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static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_codec *codec = codec_dai->codec;
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struct tegra_max98090 *machine = snd_soc_card_get_drvdata(codec->card);
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if (gpio_is_valid(machine->gpio_hp_det)) {
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snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
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&tegra_max98090_hp_jack);
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snd_soc_jack_add_pins(&tegra_max98090_hp_jack,
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ARRAY_SIZE(tegra_max98090_hp_jack_pins),
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tegra_max98090_hp_jack_pins);
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tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
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snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
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1,
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&tegra_max98090_hp_jack_gpio);
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}
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return 0;
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}
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static struct snd_soc_dai_link tegra_max98090_dai = {
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.name = "max98090",
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.stream_name = "max98090 PCM",
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.codec_dai_name = "HiFi",
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.init = tegra_max98090_asoc_init,
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.ops = &tegra_max98090_ops,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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};
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static struct snd_soc_card snd_soc_tegra_max98090 = {
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.name = "tegra-max98090",
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.owner = THIS_MODULE,
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.dai_link = &tegra_max98090_dai,
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.num_links = 1,
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.controls = tegra_max98090_controls,
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.num_controls = ARRAY_SIZE(tegra_max98090_controls),
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.dapm_widgets = tegra_max98090_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
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.fully_routed = true,
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};
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static int tegra_max98090_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct snd_soc_card *card = &snd_soc_tegra_max98090;
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struct tegra_max98090 *machine;
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int ret;
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machine = devm_kzalloc(&pdev->dev,
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sizeof(struct tegra_max98090), GFP_KERNEL);
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if (!machine) {
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dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
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return -ENOMEM;
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}
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card->dev = &pdev->dev;
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platform_set_drvdata(pdev, card);
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snd_soc_card_set_drvdata(card, machine);
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machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
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if (machine->gpio_hp_det == -EPROBE_DEFER)
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return -EPROBE_DEFER;
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ret = snd_soc_of_parse_card_name(card, "nvidia,model");
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if (ret)
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goto err;
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ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
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if (ret)
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goto err;
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tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
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"nvidia,audio-codec", 0);
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if (!tegra_max98090_dai.codec_of_node) {
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dev_err(&pdev->dev,
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"Property 'nvidia,audio-codec' missing or invalid\n");
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ret = -EINVAL;
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goto err;
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}
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tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
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"nvidia,i2s-controller", 0);
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if (!tegra_max98090_dai.cpu_of_node) {
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dev_err(&pdev->dev,
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"Property 'nvidia,i2s-controller' missing or invalid\n");
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ret = -EINVAL;
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goto err;
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}
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tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
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ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
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if (ret)
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goto err;
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
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ret);
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goto err_fini_utils;
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}
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return 0;
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err_fini_utils:
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tegra_asoc_utils_fini(&machine->util_data);
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err:
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return ret;
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}
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static int tegra_max98090_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
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snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
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&tegra_max98090_hp_jack_gpio);
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snd_soc_unregister_card(card);
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tegra_asoc_utils_fini(&machine->util_data);
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return 0;
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}
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static const struct of_device_id tegra_max98090_of_match[] = {
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{ .compatible = "nvidia,tegra-audio-max98090", },
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{},
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};
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static struct platform_driver tegra_max98090_driver = {
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.driver = {
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.name = DRV_NAME,
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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.of_match_table = tegra_max98090_of_match,
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},
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.probe = tegra_max98090_probe,
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.remove = tegra_max98090_remove,
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};
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module_platform_driver(tegra_max98090_driver);
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MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
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MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:" DRV_NAME);
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MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
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