2011-01-08 13:36:16 +08:00
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/*
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* harmony.c - Harmony machine ASoC driver
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*
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* Author: Stephen Warren <swarren@nvidia.com>
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2011-01-29 05:26:36 +08:00
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* Copyright (C) 2010-2011 - NVIDIA, Inc.
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2011-01-08 13:36:16 +08:00
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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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2011-01-29 05:26:36 +08:00
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2011-01-08 13:36:16 +08:00
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#include <linux/module.h>
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2011-01-29 05:26:36 +08:00
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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2011-01-29 05:26:37 +08:00
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#include <linux/gpio.h>
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#include <mach/harmony_audio.h>
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2011-01-29 05:26:36 +08:00
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2011-01-08 13:36:16 +08:00
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#include <sound/core.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_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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2011-01-29 05:26:36 +08:00
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#define DRV_NAME "tegra-snd-harmony"
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2011-01-08 13:36:16 +08:00
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2011-01-29 05:26:36 +08:00
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struct tegra_harmony {
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2011-01-29 05:26:37 +08:00
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struct harmony_audio_platform_data *pdata;
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int gpio_spkr_en_requested;
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2011-01-29 05:26:36 +08:00
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};
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2011-01-08 13:36:16 +08:00
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static int harmony_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_dai *cpu_dai = rtd->cpu_dai;
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2011-01-29 05:26:39 +08:00
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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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2011-01-08 13:36:16 +08:00
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int srate, mclk, mclk_change;
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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(srate, mclk, &mclk_change);
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if (err < 0) {
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2011-01-29 05:26:39 +08:00
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dev_err(card->dev, "Can't configure clocks\n");
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2011-01-08 13:36:16 +08:00
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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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2011-01-29 05:26:39 +08:00
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dev_err(card->dev, "codec_dai fmt not set\n");
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2011-01-08 13:36:16 +08:00
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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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2011-01-29 05:26:39 +08:00
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dev_err(card->dev, "cpu_dai fmt not set\n");
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2011-01-08 13:36:16 +08:00
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return err;
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}
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if (mclk_change) {
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2011-01-29 05:26:38 +08:00
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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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2011-01-29 05:26:39 +08:00
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dev_err(card->dev, "codec_dai clock not set\n");
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2011-01-29 05:26:38 +08:00
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return err;
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}
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2011-01-08 13:36:16 +08:00
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}
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return 0;
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}
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static struct snd_soc_ops harmony_asoc_ops = {
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.hw_params = harmony_asoc_hw_params,
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};
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2011-01-29 05:26:37 +08:00
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static int harmony_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_codec *codec = w->codec;
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struct snd_soc_card *card = codec->card;
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struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
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struct harmony_audio_platform_data *pdata = harmony->pdata;
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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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2011-01-14 06:22:08 +08:00
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static const struct snd_soc_dapm_widget harmony_dapm_widgets[] = {
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2011-01-29 05:26:37 +08:00
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SND_SOC_DAPM_SPK("Int Spk", harmony_event_int_spk),
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2011-01-14 06:22:08 +08:00
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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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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2011-01-29 05:26:37 +08:00
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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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2011-01-14 06:22:08 +08:00
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{"Mic Bias", NULL, "Mic Jack"},
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{"IN1L", NULL, "Mic Bias"},
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};
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static int harmony_asoc_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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2011-01-29 05:26:37 +08:00
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struct snd_soc_card *card = codec->card;
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struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
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struct harmony_audio_platform_data *pdata = harmony->pdata;
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int ret;
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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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harmony->gpio_spkr_en_requested = 1;
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gpio_direction_output(pdata->gpio_spkr_en, 0);
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2011-01-14 06:22:08 +08:00
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snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets,
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ARRAY_SIZE(harmony_dapm_widgets));
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snd_soc_dapm_add_routes(dapm, harmony_audio_map,
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ARRAY_SIZE(harmony_audio_map));
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snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
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2011-01-29 05:26:37 +08:00
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snd_soc_dapm_enable_pin(dapm, "Int Spk");
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2011-01-14 06:22:08 +08:00
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snd_soc_dapm_enable_pin(dapm, "Mic Jack");
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snd_soc_dapm_sync(dapm);
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return 0;
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}
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2011-01-08 13:36:16 +08:00
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static struct snd_soc_dai_link harmony_wm8903_dai = {
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.name = "WM8903",
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.stream_name = "WM8903 PCM",
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.codec_name = "wm8903-codec.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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2011-01-14 06:22:08 +08:00
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.init = harmony_asoc_init,
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2011-01-08 13:36:16 +08:00
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.ops = &harmony_asoc_ops,
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};
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static struct snd_soc_card snd_soc_harmony = {
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.name = "tegra-harmony",
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.dai_link = &harmony_wm8903_dai,
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.num_links = 1,
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};
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2011-01-29 05:26:36 +08:00
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static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev)
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2011-01-08 13:36:16 +08:00
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{
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2011-01-29 05:26:36 +08:00
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struct snd_soc_card *card = &snd_soc_harmony;
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struct tegra_harmony *harmony;
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2011-01-29 05:26:37 +08:00
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struct harmony_audio_platform_data *pdata;
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2011-01-08 13:36:16 +08:00
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int ret;
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if (!machine_is_harmony()) {
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2011-01-29 05:26:36 +08:00
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dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
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2011-01-08 13:36:16 +08:00
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return -ENODEV;
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}
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2011-01-29 05:26:37 +08:00
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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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2011-01-29 05:26:36 +08:00
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harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL);
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if (!harmony) {
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dev_err(&pdev->dev, "Can't allocate tegra_harmony\n");
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return -ENOMEM;
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2011-01-08 13:36:16 +08:00
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}
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2011-01-29 05:26:37 +08:00
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harmony->pdata = pdata;
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2011-01-29 05:26:36 +08:00
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ret = tegra_asoc_utils_init();
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if (ret)
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goto err_free_harmony;
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2011-01-08 13:36:16 +08:00
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2011-01-29 05:26:36 +08:00
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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, harmony);
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2011-01-08 13:36:16 +08:00
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2011-01-29 05:26:36 +08:00
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ret = snd_soc_register_card(card);
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2011-01-08 13:36:16 +08:00
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if (ret) {
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2011-01-29 05:26:36 +08:00
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
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2011-01-08 13:36:16 +08:00
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ret);
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2011-01-29 05:26:36 +08:00
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goto err_clear_drvdata;
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2011-01-08 13:36:16 +08:00
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}
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return 0;
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2011-01-29 05:26:36 +08:00
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err_clear_drvdata:
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snd_soc_card_set_drvdata(card, NULL);
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platform_set_drvdata(pdev, NULL);
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card->dev = NULL;
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2011-01-08 13:36:16 +08:00
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tegra_asoc_utils_fini();
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2011-01-29 05:26:36 +08:00
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err_free_harmony:
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kfree(harmony);
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2011-01-08 13:36:16 +08:00
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return ret;
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}
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2011-01-29 05:26:36 +08:00
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static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev)
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2011-01-08 13:36:16 +08:00
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{
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2011-01-29 05:26:36 +08:00
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
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2011-01-29 05:26:37 +08:00
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struct harmony_audio_platform_data *pdata = harmony->pdata;
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2011-01-29 05:26:36 +08:00
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snd_soc_unregister_card(card);
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snd_soc_card_set_drvdata(card, NULL);
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platform_set_drvdata(pdev, NULL);
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card->dev = NULL;
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2011-01-08 13:36:16 +08:00
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tegra_asoc_utils_fini();
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2011-01-29 05:26:36 +08:00
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2011-01-29 05:26:37 +08:00
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if (harmony->gpio_spkr_en_requested)
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gpio_free(pdata->gpio_spkr_en);
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2011-01-29 05:26:36 +08:00
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kfree(harmony);
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return 0;
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}
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static struct platform_driver tegra_snd_harmony_driver = {
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.driver = {
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.name = DRV_NAME,
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.owner = THIS_MODULE,
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},
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.probe = tegra_snd_harmony_probe,
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.remove = __devexit_p(tegra_snd_harmony_remove),
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};
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static int __init snd_tegra_harmony_init(void)
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{
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return platform_driver_register(&tegra_snd_harmony_driver);
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}
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module_init(snd_tegra_harmony_init);
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static void __exit snd_tegra_harmony_exit(void)
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{
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platform_driver_unregister(&tegra_snd_harmony_driver);
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2011-01-08 13:36:16 +08:00
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}
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2011-01-29 05:26:36 +08:00
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module_exit(snd_tegra_harmony_exit);
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2011-01-08 13:36:16 +08:00
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MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
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MODULE_DESCRIPTION("Harmony machine ASoC driver");
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MODULE_LICENSE("GPL");
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