429 lines
11 KiB
C
429 lines
11 KiB
C
/*
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* smdk6400_wm8753.c -- SoC audio for Neo1973
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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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* Copyright (C) 2007, Ryu Euiyoul <ryu.real@gmail.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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* Revision history
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* 20th Jan 2007 Initial version.
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* 05th Feb 2007 Rename all to Neo1973
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*
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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/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <sound/driver.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 <asm/hardware/scoop.h>
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#include <asm/arch/regs-iis.h>
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#include <asm/arch/regs-gpio.h>
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#include <asm/hardware.h>
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#include <asm/arch/audio.h>
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#include <asm/io.h>
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#include <asm/arch/spi-gpio.h>
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#include <asm/arch/regs-s3c2450-clock.h>
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#include "../codecs/wm8753.h"
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#include "s3c-pcm.h"
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#include "s3c-i2s.h"
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/* define the scenarios */
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#define SMDK6400_AUDIO_OFF 0
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#define SMDK6400_CAPTURE_MIC1 3
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#define SMDK6400_STEREO_TO_HEADPHONES 2
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#define SMDK6400_CAPTURE_LINE_IN 1
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#ifdef CONFIG_SND_DEBUG
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#define s3cdbg(x...) printk(x)
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#else
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#define s3cdbg(x...)
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#endif
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static int smdk6400_hifi_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_codec_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
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unsigned int pll_out = 0, bclk = 0;
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int ret = 0;
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unsigned int regs;
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unsigned int prescaler=0;
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//s3cdbg("Entered %s, rate = %d\n", __FUNCTION__, params_rate(params));
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printk("Entered %s, rate = %d\n", __FUNCTION__, params_rate(params));
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/* Select Clock source EPLL */
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// regs = ioremap(S3C2410_PA_CLKPWR,0x20);
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regs = readl(S3C2443_CLKSRC);
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regs &= ~(3<<12);
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regs &= ~(3<<14);
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regs |= S3C2450_CLKSRC_I2S1_EPLL;
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regs = (regs & ~(3<<7))|(2<<7);
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writel(regs, S3C2443_CLKSRC);
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regs |= (1<<6);
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writel(regs, S3C2443_CLKSRC);
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regs = readl(S3C2443_SCLKCON);
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regs |= S3C2443_SCLKCON_I2SCLK_1;
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writel(regs, S3C2443_SCLKCON);
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//s3cdbg("%s: %d , params = %d \n", __FUNCTION__, __LINE__, params_rate(params));
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printk("%s: %d , params = %d \n", __FUNCTION__, __LINE__, params_rate(params));
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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 32000:
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case 48000:
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case 64000:
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case 96000:
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writel(9962, S3C2450_EPLLCON_K);
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writel((49<<16)|(1<<8)|(3<<0) ,S3C2443_EPLLCON);
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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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writel(10381, S3C2450_EPLLCON_K);
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writel((45<<16)|(1<<8)|(2<<0) ,S3C2443_EPLLCON);
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break;
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default:
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printk("Unsupported rate = %d\n", params_rate(params));
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break;
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}
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switch (params_rate(params)) {
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case 8000:
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bclk = WM8753_BCLK_DIV_16;
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pll_out = 18432000;
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prescaler = 24;
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break;
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case 11025:
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bclk = WM8753_BCLK_DIV_16;
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pll_out = 16934400;
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prescaler = 32;
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break;
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case 16000:
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bclk = WM8753_BCLK_DIV_8;
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pll_out = 18432000;
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prescaler = 12;
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break;
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case 22050:
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bclk = WM8753_BCLK_DIV_2;
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pll_out = 16934400;
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prescaler = 16;
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break;
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case 32000:
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bclk = WM8753_BCLK_DIV_4;
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pll_out = 18432000;
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prescaler = 6;
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break;
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case 44100:
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bclk = WM8753_BCLK_DIV_4;
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pll_out = 16934400;
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prescaler = 8;
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break;
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case 48000:
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bclk = WM8753_BCLK_DIV_4;
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pll_out = 18432000;
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prescaler = 4;
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break;
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case 64000:
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bclk = WM8753_BCLK_DIV_4;
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pll_out = 18432000;
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prescaler = 3;
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break;
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case 88200:
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bclk = WM8753_BCLK_DIV_4;
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pll_out = 16934400;
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prescaler = 4;
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break;
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case 96000:
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bclk = WM8753_BCLK_DIV_4;
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pll_out = 18432000;
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prescaler = 2;
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break;
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}
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/* set codec DAI configuration */
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ret = codec_dai->dai_ops.set_fmt(codec_dai,
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SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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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 = cpu_dai->dai_ops.set_fmt(cpu_dai,
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SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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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 = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_MCLK, pll_out,
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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 MCLK division for sample rate */
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ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
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S3C2410_IISMOD_32FS );
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if (ret < 0)
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return ret;
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/* set codec BCLK division for sample rate */
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ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
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if (ret < 0)
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return ret;
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/* set prescaler division for sample rate */
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ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
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((prescaler/2 - 1) << 0x8));
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if (ret < 0)
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return ret;
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#if 0
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/* set the codec register set for capture and play */
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ret = codec_dai->dai_ops.set_tdm_slot(codec_dai, substream->stream, 2);
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if (ret < 0)
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return ret;
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#endif
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return 0;
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}
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static int smdk6400_hifi_hw_free(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_dai *codec_dai = rtd->dai->codec_dai;
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/* disable the PLL */
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return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1, 0, 0);
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}
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/*
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* Neo1973 WM8753 HiFi DAI opserations.
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*/
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static struct snd_soc_ops smdk6400_hifi_ops = {
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.hw_params = smdk6400_hifi_hw_params,
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.hw_free = smdk6400_hifi_hw_free,
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};
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static int smdk6400_scenario = 0;
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static int smdk6400_get_scenario(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] = smdk6400_scenario;
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return 0;
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}
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static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
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{
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switch(smdk6400_scenario) {
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case SMDK6400_AUDIO_OFF:
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
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snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 0);
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snd_soc_dapm_set_endpoint(codec, "Line In Jack", 0);
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break;
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case SMDK6400_STEREO_TO_HEADPHONES:
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
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snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 0);
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snd_soc_dapm_set_endpoint(codec, "Line In Jack", 0);
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break;
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case SMDK6400_CAPTURE_MIC1:
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
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snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 1);
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snd_soc_dapm_set_endpoint(codec, "Line In Jack", 0);
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break;
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case SMDK6400_CAPTURE_LINE_IN:
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
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snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 0);
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snd_soc_dapm_set_endpoint(codec, "Line In Jack", 1);
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break;
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default:
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
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snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 1);
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snd_soc_dapm_set_endpoint(codec, "Line In Jack", 1);
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break;
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}
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snd_soc_dapm_sync_endpoints(codec);
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return 0;
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}
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static int smdk6400_set_scenario(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 (smdk6400_scenario == ucontrol->value.integer.value[0])
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return 0;
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smdk6400_scenario = ucontrol->value.integer.value[0];
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set_scenario_endpoints(codec, smdk6400_scenario);
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return 1;
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}
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static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
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SND_SOC_DAPM_LINE("Line In Jack", NULL),
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};
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/* example machine audio_mapnections */
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static const char* audio_map[][3] = {
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{"Headphone Jack", NULL, "LOUT1"},
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{"Headphone Jack", NULL, "ROUT1"},
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/* mic is connected to mic1 - with bias */
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/* mic is connected to mic1 - with bias */
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{"MIC1", NULL, "Mic1 Jack"},
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{"LINE1", NULL, "Line In Jack"},
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{"LINE2", NULL, "Line In Jack"},
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/* Connect the ALC pins */
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{"ACIN", NULL, "ACOP"},
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{NULL, NULL, NULL},
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};
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static const char *smdk_scenarios[] = {
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"Off",
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"Capture Line In",
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"Headphones",
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"Capture Mic1",
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};
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static const struct soc_enum smdk_scenario_enum[] = {
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(smdk_scenarios),smdk_scenarios),
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};
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static const struct snd_kcontrol_new wm8753_smdk6400_controls[] = {
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SOC_ENUM_EXT("SMDK Mode", smdk_scenario_enum[0],
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smdk6400_get_scenario, smdk6400_set_scenario),
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};
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/*
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* This is an example machine initialisation for a wm8753 connected to a
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* smdk6400. It is missing logic to detect hp/mic insertions and logic
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* to re-route the audio in such an event.
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*/
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static int smdk6400_wm8753_init(struct snd_soc_codec *codec)
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{
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int i, err;
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/* set endpoints to default mode */
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set_scenario_endpoints(codec, SMDK6400_AUDIO_OFF);
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/* Add smdk6400 specific widgets */
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for (i = 0; i < ARRAY_SIZE(wm8753_dapm_widgets); i++)
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snd_soc_dapm_new_control(codec, &wm8753_dapm_widgets[i]);
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/* add smdk6400 specific controls */
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for (i = 0; i < ARRAY_SIZE(wm8753_smdk6400_controls); i++) {
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err = snd_ctl_add(codec->card,
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snd_soc_cnew(&wm8753_smdk6400_controls[i],
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codec, NULL));
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if (err < 0)
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return err;
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}
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/* set up smdk6400 specific audio path audio_mapnects */
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for (i = 0; audio_map[i][0] != NULL; i++) {
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snd_soc_dapm_connect_input(codec, audio_map[i][0],
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audio_map[i][1], audio_map[i][2]);
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}
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/* always connected */
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snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 1);
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snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
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snd_soc_dapm_set_endpoint(codec, "Line In Jack", 1);
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snd_soc_dapm_sync_endpoints(codec);
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return 0;
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}
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static struct snd_soc_dai_link smdk6400_dai[] = {
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{ /* Hifi Playback - for similatious use with voice below */
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.name = "WM8753",
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.stream_name = "WM8753 HiFi",
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.cpu_dai = &s3c_i2s_dai,
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.codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
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.init = smdk6400_wm8753_init,
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.ops = &smdk6400_hifi_ops,
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},
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};
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static struct snd_soc_machine smdk6400 = {
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.name = "smdk2416",
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.dai_link = smdk6400_dai,
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.num_links = ARRAY_SIZE(smdk6400_dai),
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};
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static struct wm8753_setup_data smdk6400_wm8753_setup = {
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.i2c_address = 0x1a,
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};
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static struct snd_soc_device smdk6400_snd_devdata = {
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.machine = &smdk6400,
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.platform = &s3c24xx_soc_platform,
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.codec_dev = &soc_codec_dev_wm8753,
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.codec_data = &smdk6400_wm8753_setup,
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};
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static struct platform_device *smdk6400_snd_device;
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static int __init smdk6400_init(void)
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{
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int ret;
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smdk6400_snd_device = platform_device_alloc("soc-audio", -1);
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if (!smdk6400_snd_device)
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return -ENOMEM;
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platform_set_drvdata(smdk6400_snd_device, &smdk6400_snd_devdata);
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smdk6400_snd_devdata.dev = &smdk6400_snd_device->dev;
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ret = platform_device_add(smdk6400_snd_device);
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if (ret)
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platform_device_put(smdk6400_snd_device);
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return ret;
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}
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static void __exit smdk6400_exit(void)
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{
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platform_device_unregister(smdk6400_snd_device);
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}
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module_init(smdk6400_init);
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module_exit(smdk6400_exit);
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/* Module information */
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MODULE_AUTHOR("Ryu Euiyoul");
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MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
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MODULE_LICENSE("GPL");
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