359 lines
9.2 KiB
C
359 lines
9.2 KiB
C
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/*
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* corgi.c -- SoC audio for Corgi
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Copyright 2005 Openedhand Ltd.
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*
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* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
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* Richard Purdie <richard@openedhand.com>
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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 of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/mach-types.h>
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#include <mach/corgi.h>
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#include <mach/audio.h>
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#include "../codecs/wm8731.h"
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#include "pxa2xx-pcm.h"
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#include "pxa2xx-i2s.h"
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#define CORGI_HP 0
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#define CORGI_MIC 1
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#define CORGI_LINE 2
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#define CORGI_HEADSET 3
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#define CORGI_HP_OFF 4
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#define CORGI_SPK_ON 0
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#define CORGI_SPK_OFF 1
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/* audio clock in Hz - rounded from 12.235MHz */
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#define CORGI_AUDIO_CLOCK 12288000
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static int corgi_jack_func;
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static int corgi_spk_func;
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static void corgi_ext_control(struct snd_soc_codec *codec)
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{
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/* set up jack connection */
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switch (corgi_jack_func) {
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case CORGI_HP:
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/* set = unmute headphone */
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gpio_set_value(CORGI_GPIO_MUTE_L, 1);
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gpio_set_value(CORGI_GPIO_MUTE_R, 1);
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snd_soc_dapm_disable_pin(codec, "Mic Jack");
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snd_soc_dapm_disable_pin(codec, "Line Jack");
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snd_soc_dapm_enable_pin(codec, "Headphone Jack");
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snd_soc_dapm_disable_pin(codec, "Headset Jack");
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break;
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case CORGI_MIC:
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/* reset = mute headphone */
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gpio_set_value(CORGI_GPIO_MUTE_L, 0);
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gpio_set_value(CORGI_GPIO_MUTE_R, 0);
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snd_soc_dapm_enable_pin(codec, "Mic Jack");
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snd_soc_dapm_disable_pin(codec, "Line Jack");
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snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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snd_soc_dapm_disable_pin(codec, "Headset Jack");
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break;
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case CORGI_LINE:
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gpio_set_value(CORGI_GPIO_MUTE_L, 0);
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gpio_set_value(CORGI_GPIO_MUTE_R, 0);
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snd_soc_dapm_disable_pin(codec, "Mic Jack");
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snd_soc_dapm_enable_pin(codec, "Line Jack");
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snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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snd_soc_dapm_disable_pin(codec, "Headset Jack");
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break;
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case CORGI_HEADSET:
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gpio_set_value(CORGI_GPIO_MUTE_L, 0);
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gpio_set_value(CORGI_GPIO_MUTE_R, 1);
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snd_soc_dapm_enable_pin(codec, "Mic Jack");
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snd_soc_dapm_disable_pin(codec, "Line Jack");
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snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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snd_soc_dapm_enable_pin(codec, "Headset Jack");
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break;
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}
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if (corgi_spk_func == CORGI_SPK_ON)
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snd_soc_dapm_enable_pin(codec, "Ext Spk");
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else
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snd_soc_dapm_disable_pin(codec, "Ext Spk");
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/* signal a DAPM event */
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snd_soc_dapm_sync(codec);
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}
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static int corgi_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->socdev->card->codec;
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/* check the jack status at stream startup */
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corgi_ext_control(codec);
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return 0;
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}
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/* we need to unmute the HP at shutdown as the mute burns power on corgi */
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static void corgi_shutdown(struct snd_pcm_substream *substream)
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{
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/* set = unmute headphone */
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gpio_set_value(CORGI_GPIO_MUTE_L, 1);
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gpio_set_value(CORGI_GPIO_MUTE_R, 1);
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}
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static int corgi_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->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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unsigned int clk = 0;
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int ret = 0;
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switch (params_rate(params)) {
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case 8000:
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case 16000:
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case 48000:
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case 96000:
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clk = 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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clk = 11289600;
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break;
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}
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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/* set the codec system clock for DAC and ADC */
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
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SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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/* set the I2S system clock as input (unused) */
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ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
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SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops corgi_ops = {
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.startup = corgi_startup,
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.hw_params = corgi_hw_params,
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.shutdown = corgi_shutdown,
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};
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static int corgi_get_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = corgi_jack_func;
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return 0;
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}
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static int corgi_set_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (corgi_jack_func == ucontrol->value.integer.value[0])
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return 0;
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corgi_jack_func = ucontrol->value.integer.value[0];
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corgi_ext_control(codec);
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return 1;
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}
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static int corgi_get_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = corgi_spk_func;
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return 0;
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}
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static int corgi_set_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (corgi_spk_func == ucontrol->value.integer.value[0])
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return 0;
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corgi_spk_func = ucontrol->value.integer.value[0];
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corgi_ext_control(codec);
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return 1;
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}
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static int corgi_amp_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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{
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gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
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return 0;
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}
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static int corgi_mic_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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{
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gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
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return 0;
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}
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/* corgi machine dapm widgets */
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static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
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SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
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SND_SOC_DAPM_LINE("Line Jack", NULL),
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SND_SOC_DAPM_HP("Headset Jack", NULL),
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};
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/* Corgi machine audio map (connections to the codec pins) */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* headset Jack - in = micin, out = LHPOUT*/
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{"Headset Jack", NULL, "LHPOUT"},
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/* headphone connected to LHPOUT1, RHPOUT1 */
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{"Headphone Jack", NULL, "LHPOUT"},
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{"Headphone Jack", NULL, "RHPOUT"},
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/* speaker connected to LOUT, ROUT */
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{"Ext Spk", NULL, "ROUT"},
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{"Ext Spk", NULL, "LOUT"},
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/* mic is connected to MICIN (via right channel of headphone jack) */
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{"MICIN", NULL, "Mic Jack"},
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/* Same as the above but no mic bias for line signals */
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{"MICIN", NULL, "Line Jack"},
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};
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static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
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"Off"};
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static const char *spk_function[] = {"On", "Off"};
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static const struct soc_enum corgi_enum[] = {
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SOC_ENUM_SINGLE_EXT(5, jack_function),
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SOC_ENUM_SINGLE_EXT(2, spk_function),
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};
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static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
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SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
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corgi_set_jack),
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SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
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corgi_set_spk),
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};
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/*
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* Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
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*/
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static int corgi_wm8731_init(struct snd_soc_codec *codec)
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{
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int err;
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snd_soc_dapm_nc_pin(codec, "LLINEIN");
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snd_soc_dapm_nc_pin(codec, "RLINEIN");
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/* Add corgi specific controls */
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err = snd_soc_add_controls(codec, wm8731_corgi_controls,
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ARRAY_SIZE(wm8731_corgi_controls));
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if (err < 0)
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return err;
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/* Add corgi specific widgets */
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snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
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ARRAY_SIZE(wm8731_dapm_widgets));
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/* Set up corgi specific audio path audio_map */
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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snd_soc_dapm_sync(codec);
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return 0;
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}
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/* corgi digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link corgi_dai = {
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.name = "WM8731",
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.stream_name = "WM8731",
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.cpu_dai = &pxa_i2s_dai,
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.codec_dai = &wm8731_dai,
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.init = corgi_wm8731_init,
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.ops = &corgi_ops,
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};
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/* corgi audio machine driver */
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static struct snd_soc_card snd_soc_corgi = {
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.name = "Corgi",
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.platform = &pxa2xx_soc_platform,
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.dai_link = &corgi_dai,
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.num_links = 1,
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};
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/* corgi audio subsystem */
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static struct snd_soc_device corgi_snd_devdata = {
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.card = &snd_soc_corgi,
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.codec_dev = &soc_codec_dev_wm8731,
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};
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static struct platform_device *corgi_snd_device;
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static int __init corgi_init(void)
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{
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int ret;
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if (!(machine_is_corgi() || machine_is_shepherd() ||
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machine_is_husky()))
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return -ENODEV;
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corgi_snd_device = platform_device_alloc("soc-audio", -1);
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if (!corgi_snd_device)
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return -ENOMEM;
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platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
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corgi_snd_devdata.dev = &corgi_snd_device->dev;
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ret = platform_device_add(corgi_snd_device);
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if (ret)
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platform_device_put(corgi_snd_device);
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return ret;
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}
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static void __exit corgi_exit(void)
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{
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platform_device_unregister(corgi_snd_device);
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}
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module_init(corgi_init);
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module_exit(corgi_exit);
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/* Module information */
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MODULE_AUTHOR("Richard Purdie");
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MODULE_DESCRIPTION("ALSA SoC Corgi");
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||
|
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MODULE_LICENSE("GPL");
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