462 lines
12 KiB
C
462 lines
12 KiB
C
/*
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* tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
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*
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* Author: Stephen Warren <swarren@nvidia.com>
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* Copyright (C) 2010-2011 - NVIDIA, Inc.
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*
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* Based on code copyright/by:
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*
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* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
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*
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* Copyright 2007 Wolfson Microelectronics PLC.
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* Author: Graeme Gregory
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* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms 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 that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for 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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <asm/mach-types.h>
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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 <mach/tegra_wm8903_pdata.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 "../codecs/wm8903.h"
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#include "tegra_das.h"
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#include "tegra_i2s.h"
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#include "tegra_pcm.h"
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#include "tegra_asoc_utils.h"
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#define DRV_NAME "tegra-snd-wm8903"
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#define GPIO_SPKR_EN BIT(0)
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#define GPIO_HP_MUTE BIT(1)
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#define GPIO_INT_MIC_EN BIT(2)
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#define GPIO_EXT_MIC_EN BIT(3)
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#define GPIO_HP_DET BIT(4)
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struct tegra_wm8903 {
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struct tegra_asoc_utils_data util_data;
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struct tegra_wm8903_platform_data *pdata;
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int gpio_requested;
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};
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static int tegra_wm8903_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_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_card *card = codec->card;
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struct tegra_wm8903 *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 64000:
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case 88200:
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case 96000:
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mclk = 128 * srate;
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break;
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default:
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mclk = 256 * srate;
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break;
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}
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/* FIXME: Codec only requires >= 3MHz if OSR==0 */
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while (mclk < 6000000)
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mclk *= 2;
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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_fmt(codec_dai,
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SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS);
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if (err < 0) {
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dev_err(card->dev, "codec_dai fmt not set\n");
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return err;
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}
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err = snd_soc_dai_set_fmt(cpu_dai,
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SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS);
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if (err < 0) {
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dev_err(card->dev, "cpu_dai fmt not set\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_wm8903_ops = {
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.hw_params = tegra_wm8903_hw_params,
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};
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static struct snd_soc_jack tegra_wm8903_hp_jack;
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static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
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{
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.pin = "Headphone Jack",
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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_wm8903_hp_jack_gpio = {
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.name = "headphone detect",
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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 struct snd_soc_jack tegra_wm8903_mic_jack;
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static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
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{
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.pin = "Mic Jack",
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.mask = SND_JACK_MICROPHONE,
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},
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};
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static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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{
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struct snd_soc_dapm_context *dapm = w->dapm;
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struct snd_soc_card *card = dapm->card;
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struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
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struct tegra_wm8903_platform_data *pdata = machine->pdata;
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if (!(machine->gpio_requested & GPIO_SPKR_EN))
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return 0;
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gpio_set_value_cansleep(pdata->gpio_spkr_en,
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SND_SOC_DAPM_EVENT_ON(event));
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return 0;
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}
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static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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{
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struct snd_soc_dapm_context *dapm = w->dapm;
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struct snd_soc_card *card = dapm->card;
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struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
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struct tegra_wm8903_platform_data *pdata = machine->pdata;
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if (!(machine->gpio_requested & GPIO_HP_MUTE))
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return 0;
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gpio_set_value_cansleep(pdata->gpio_hp_mute,
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!SND_SOC_DAPM_EVENT_ON(event));
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return 0;
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}
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static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
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SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
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SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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};
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static const struct snd_soc_dapm_route harmony_audio_map[] = {
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{"Headphone Jack", NULL, "HPOUTR"},
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{"Headphone Jack", NULL, "HPOUTL"},
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{"Int Spk", NULL, "ROP"},
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{"Int Spk", NULL, "RON"},
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{"Int Spk", NULL, "LOP"},
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{"Int Spk", NULL, "LON"},
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{"Mic Jack", NULL, "MICBIAS"},
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{"IN1L", NULL, "Mic Jack"},
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};
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static const struct snd_soc_dapm_route seaboard_audio_map[] = {
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{"Headphone Jack", NULL, "HPOUTR"},
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{"Headphone Jack", NULL, "HPOUTL"},
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{"Int Spk", NULL, "ROP"},
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{"Int Spk", NULL, "RON"},
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{"Int Spk", NULL, "LOP"},
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{"Int Spk", NULL, "LON"},
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{"Mic Jack", NULL, "MICBIAS"},
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{"IN1R", NULL, "Mic Jack"},
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};
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static const struct snd_soc_dapm_route kaen_audio_map[] = {
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{"Headphone Jack", NULL, "HPOUTR"},
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{"Headphone Jack", NULL, "HPOUTL"},
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{"Int Spk", NULL, "ROP"},
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{"Int Spk", NULL, "RON"},
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{"Int Spk", NULL, "LOP"},
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{"Int Spk", NULL, "LON"},
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{"Mic Jack", NULL, "MICBIAS"},
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{"IN2R", NULL, "Mic Jack"},
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};
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static const struct snd_soc_dapm_route aebl_audio_map[] = {
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{"Headphone Jack", NULL, "HPOUTR"},
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{"Headphone Jack", NULL, "HPOUTL"},
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{"Int Spk", NULL, "LINEOUTR"},
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{"Int Spk", NULL, "LINEOUTL"},
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{"Mic Jack", NULL, "MICBIAS"},
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{"IN1R", NULL, "Mic Jack"},
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};
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static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
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SOC_DAPM_PIN_SWITCH("Int Spk"),
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};
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static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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struct snd_soc_card *card = codec->card;
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struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
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struct tegra_wm8903_platform_data *pdata = machine->pdata;
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int ret;
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ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1,
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TEGRA_DAS_DAP_SEL_DAC1);
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if (ret) {
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dev_err(card->dev, "Can't set up DAS DAP connection\n");
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return ret;
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}
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ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1,
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TEGRA_DAS_DAC_SEL_DAP1);
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if (ret) {
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dev_err(card->dev, "Can't set up DAS DAC connection\n");
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return ret;
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}
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if (gpio_is_valid(pdata->gpio_spkr_en)) {
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ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
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if (ret) {
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dev_err(card->dev, "cannot get spkr_en gpio\n");
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return ret;
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}
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machine->gpio_requested |= GPIO_SPKR_EN;
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gpio_direction_output(pdata->gpio_spkr_en, 0);
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}
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if (gpio_is_valid(pdata->gpio_hp_mute)) {
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ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
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if (ret) {
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dev_err(card->dev, "cannot get hp_mute gpio\n");
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return ret;
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}
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machine->gpio_requested |= GPIO_HP_MUTE;
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gpio_direction_output(pdata->gpio_hp_mute, 1);
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}
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if (gpio_is_valid(pdata->gpio_int_mic_en)) {
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ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
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if (ret) {
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dev_err(card->dev, "cannot get int_mic_en gpio\n");
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return ret;
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}
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machine->gpio_requested |= GPIO_INT_MIC_EN;
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/* Disable int mic; enable signal is active-high */
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gpio_direction_output(pdata->gpio_int_mic_en, 0);
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}
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if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
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ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
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if (ret) {
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dev_err(card->dev, "cannot get ext_mic_en gpio\n");
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return ret;
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}
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machine->gpio_requested |= GPIO_EXT_MIC_EN;
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/* Enable ext mic; enable signal is active-low */
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gpio_direction_output(pdata->gpio_ext_mic_en, 0);
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}
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if (gpio_is_valid(pdata->gpio_hp_det)) {
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tegra_wm8903_hp_jack_gpio.gpio = pdata->gpio_hp_det;
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snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
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&tegra_wm8903_hp_jack);
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snd_soc_jack_add_pins(&tegra_wm8903_hp_jack,
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ARRAY_SIZE(tegra_wm8903_hp_jack_pins),
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tegra_wm8903_hp_jack_pins);
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snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
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1,
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&tegra_wm8903_hp_jack_gpio);
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machine->gpio_requested |= GPIO_HP_DET;
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}
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snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
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&tegra_wm8903_mic_jack);
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snd_soc_jack_add_pins(&tegra_wm8903_mic_jack,
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ARRAY_SIZE(tegra_wm8903_mic_jack_pins),
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tegra_wm8903_mic_jack_pins);
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wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
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0);
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snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
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return 0;
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}
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static struct snd_soc_dai_link tegra_wm8903_dai = {
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.name = "WM8903",
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.stream_name = "WM8903 PCM",
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.codec_name = "wm8903.0-001a",
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.platform_name = "tegra-pcm-audio",
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.cpu_dai_name = "tegra-i2s.0",
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.codec_dai_name = "wm8903-hifi",
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.init = tegra_wm8903_init,
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.ops = &tegra_wm8903_ops,
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};
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static struct snd_soc_card snd_soc_tegra_wm8903 = {
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.name = "tegra-wm8903",
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.dai_link = &tegra_wm8903_dai,
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.num_links = 1,
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.controls = tegra_wm8903_controls,
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.num_controls = ARRAY_SIZE(tegra_wm8903_controls),
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.dapm_widgets = tegra_wm8903_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
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.fully_routed = true,
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};
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static __devinit int tegra_wm8903_driver_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &snd_soc_tegra_wm8903;
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struct tegra_wm8903 *machine;
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struct tegra_wm8903_platform_data *pdata;
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int ret;
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pdata = pdev->dev.platform_data;
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if (!pdata) {
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dev_err(&pdev->dev, "No platform data supplied\n");
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return -EINVAL;
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}
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machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
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GFP_KERNEL);
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if (!machine) {
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dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
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ret = -ENOMEM;
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goto err;
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}
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machine->pdata = pdata;
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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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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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if (machine_is_harmony()) {
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card->dapm_routes = harmony_audio_map;
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card->num_dapm_routes = ARRAY_SIZE(harmony_audio_map);
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} else if (machine_is_seaboard()) {
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card->dapm_routes = seaboard_audio_map;
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card->num_dapm_routes = ARRAY_SIZE(seaboard_audio_map);
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} else if (machine_is_kaen()) {
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card->dapm_routes = kaen_audio_map;
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card->num_dapm_routes = ARRAY_SIZE(kaen_audio_map);
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} else {
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card->dapm_routes = aebl_audio_map;
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card->num_dapm_routes = ARRAY_SIZE(aebl_audio_map);
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}
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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 __devexit tegra_wm8903_driver_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_wm8903 *machine = snd_soc_card_get_drvdata(card);
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struct tegra_wm8903_platform_data *pdata = machine->pdata;
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if (machine->gpio_requested & GPIO_HP_DET)
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snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack,
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1,
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&tegra_wm8903_hp_jack_gpio);
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if (machine->gpio_requested & GPIO_EXT_MIC_EN)
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gpio_free(pdata->gpio_ext_mic_en);
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if (machine->gpio_requested & GPIO_INT_MIC_EN)
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gpio_free(pdata->gpio_int_mic_en);
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if (machine->gpio_requested & GPIO_HP_MUTE)
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gpio_free(pdata->gpio_hp_mute);
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if (machine->gpio_requested & GPIO_SPKR_EN)
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gpio_free(pdata->gpio_spkr_en);
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machine->gpio_requested = 0;
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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 struct platform_driver tegra_wm8903_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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},
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.probe = tegra_wm8903_driver_probe,
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.remove = __devexit_p(tegra_wm8903_driver_remove),
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};
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module_platform_driver(tegra_wm8903_driver);
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MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
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MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:" DRV_NAME);
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