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* neo1973_wm8753.c -- SoC audio for Neo1973
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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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* 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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#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/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 <sound/tlv.h>
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#include <asm/mach-types.h>
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#include <asm/hardware/scoop.h>
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#include <mach/regs-clock.h>
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#include <mach/regs-gpio.h>
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#include <mach/hardware.h>
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#include <plat/audio.h>
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#include <mach/spi-gpio.h>
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#include <plat/regs-iis.h>
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#include "../codecs/wm8753.h"
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#include "s3c24xx-pcm.h"
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#include "s3c24xx-i2s.h"
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/* define the scenarios */
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#define NEO_AUDIO_OFF 0
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#define NEO_GSM_CALL_AUDIO_HANDSET 1
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#define NEO_GSM_CALL_AUDIO_HEADSET 2
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#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
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#define NEO_STEREO_TO_SPEAKERS 4
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#define NEO_STEREO_TO_HEADPHONES 5
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#define NEO_CAPTURE_HANDSET 6
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#define NEO_CAPTURE_HEADSET 7
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#define NEO_CAPTURE_BLUETOOTH 8
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static struct snd_soc_card neo1973;
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static struct i2c_client *i2c;
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static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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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 pll_out = 0, bclk = 0;
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unsigned long iis_clkrate;
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pr_debug("Entered %s\n", __func__);
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iis_clkrate = s3c24xx_i2s_get_clockrate();
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switch (params_rate(params)) {
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bclk = WM8753_BCLK_DIV_4;
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bclk = WM8753_BCLK_DIV_2;
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bclk = WM8753_BCLK_DIV_16;
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bclk = WM8753_BCLK_DIV_8;
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bclk = WM8753_BCLK_DIV_4;
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bclk = WM8753_BCLK_DIV_2;
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai,
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SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai,
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SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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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, WM8753_MCLK, pll_out,
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/* set MCLK division for sample rate */
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
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S3C2410_IISMOD_32FS);
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/* set codec BCLK division for sample rate */
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
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/* set prescaler division for sample rate */
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
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S3C24XX_PRESCALE(4, 4));
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/* codec PLL input is PCLK/4 */
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ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
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iis_clkrate / 4, pll_out);
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static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
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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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pr_debug("Entered %s\n", __func__);
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/* disable the PLL */
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return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
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* Neo1973 WM8753 HiFi DAI opserations.
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static struct snd_soc_ops neo1973_hifi_ops = {
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.hw_params = neo1973_hifi_hw_params,
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.hw_free = neo1973_hifi_hw_free,
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static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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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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unsigned int pcmdiv = 0;
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unsigned long iis_clkrate;
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pr_debug("Entered %s\n", __func__);
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iis_clkrate = s3c24xx_i2s_get_clockrate();
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if (params_rate(params) != 8000)
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if (params_channels(params) != 1)
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pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
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/* todo: gg check mode (DSP_B) against CSR datasheet */
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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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, WM8753_PCMCLK, 12288000,
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/* set codec PCM division for sample rate */
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
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/* configue and enable PLL for 12.288MHz output */
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ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
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iis_clkrate / 4, 12288000);
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static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
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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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pr_debug("Entered %s\n", __func__);
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/* disable the PLL */
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return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
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static struct snd_soc_ops neo1973_voice_ops = {
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.hw_params = neo1973_voice_hw_params,
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.hw_free = neo1973_voice_hw_free,
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static int neo1973_scenario;
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static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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ucontrol->value.integer.value[0] = neo1973_scenario;
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static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
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pr_debug("Entered %s\n", __func__);
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switch (neo1973_scenario) {
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snd_soc_dapm_disable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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case NEO_GSM_CALL_AUDIO_HANDSET:
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snd_soc_dapm_enable_pin(codec, "Audio Out");
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snd_soc_dapm_enable_pin(codec, "GSM Line Out");
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snd_soc_dapm_enable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_enable_pin(codec, "Call Mic");
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case NEO_GSM_CALL_AUDIO_HEADSET:
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snd_soc_dapm_enable_pin(codec, "Audio Out");
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snd_soc_dapm_enable_pin(codec, "GSM Line Out");
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snd_soc_dapm_enable_pin(codec, "GSM Line In");
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snd_soc_dapm_enable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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case NEO_GSM_CALL_AUDIO_BLUETOOTH:
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snd_soc_dapm_disable_pin(codec, "Audio Out");
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snd_soc_dapm_enable_pin(codec, "GSM Line Out");
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snd_soc_dapm_enable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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case NEO_STEREO_TO_SPEAKERS:
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snd_soc_dapm_enable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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case NEO_STEREO_TO_HEADPHONES:
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snd_soc_dapm_enable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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case NEO_CAPTURE_HANDSET:
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snd_soc_dapm_disable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_enable_pin(codec, "Call Mic");
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case NEO_CAPTURE_HEADSET:
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snd_soc_dapm_disable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_enable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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case NEO_CAPTURE_BLUETOOTH:
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snd_soc_dapm_disable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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snd_soc_dapm_disable_pin(codec, "Audio Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line Out");
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snd_soc_dapm_disable_pin(codec, "GSM Line In");
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snd_soc_dapm_disable_pin(codec, "Headset Mic");
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snd_soc_dapm_disable_pin(codec, "Call Mic");
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snd_soc_dapm_sync(codec);
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static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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pr_debug("Entered %s\n", __func__);
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if (neo1973_scenario == ucontrol->value.integer.value[0])
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neo1973_scenario = ucontrol->value.integer.value[0];
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set_scenario_endpoints(codec, neo1973_scenario);
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static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
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static void lm4857_write_regs(void)
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pr_debug("Entered %s\n", __func__);
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if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
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printk(KERN_ERR "lm4857: i2c write failed\n");
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static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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int shift = mc->shift;
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pr_debug("Entered %s\n", __func__);
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ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
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static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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int shift = mc->shift;
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if (((lm4857_regs[reg] >> shift) & mask) ==
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ucontrol->value.integer.value[0])
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lm4857_regs[reg] &= ~(mask << shift);
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lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
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static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
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pr_debug("Entered %s\n", __func__);
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ucontrol->value.integer.value[0] = value;
393
static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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u8 value = ucontrol->value.integer.value[0];
398
pr_debug("Entered %s\n", __func__);
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if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
406
lm4857_regs[LM4857_CTRL] &= 0xF0;
407
lm4857_regs[LM4857_CTRL] |= value;
412
static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
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SND_SOC_DAPM_LINE("Audio Out", NULL),
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SND_SOC_DAPM_LINE("GSM Line Out", NULL),
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SND_SOC_DAPM_LINE("GSM Line In", NULL),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("Call Mic", NULL),
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static const struct snd_soc_dapm_route dapm_routes[] = {
423
/* Connections to the lm4857 amp */
424
{"Audio Out", NULL, "LOUT1"},
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{"Audio Out", NULL, "ROUT1"},
427
/* Connections to the GSM Module */
428
{"GSM Line Out", NULL, "MONO1"},
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{"GSM Line Out", NULL, "MONO2"},
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{"RXP", NULL, "GSM Line In"},
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{"RXN", NULL, "GSM Line In"},
433
/* Connections to Headset */
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{"MIC1", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Headset Mic"},
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{"MIC2", NULL, "Mic Bias"},
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{"MIC2N", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Call Mic"},
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/* Connect the ALC pins */
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{"ACIN", NULL, "ACOP"},
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static const char *lm4857_mode[] = {
450
"Stereo Speakers + Headphones",
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static const struct soc_enum lm4857_mode_enum[] = {
455
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
458
static const char *neo_scenarios[] = {
470
static const struct soc_enum neo_scenario_enum[] = {
471
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
474
static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
475
static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
477
static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
478
SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
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lm4857_get_reg, lm4857_set_reg, stereo_tlv),
480
SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
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lm4857_get_reg, lm4857_set_reg, stereo_tlv),
482
SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
483
lm4857_get_reg, lm4857_set_reg, mono_tlv),
484
SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
485
lm4857_get_mode, lm4857_set_mode),
486
SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
487
neo1973_get_scenario, neo1973_set_scenario),
488
SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
489
lm4857_get_reg, lm4857_set_reg),
490
SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
491
lm4857_get_reg, lm4857_set_reg),
492
SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
493
lm4857_get_reg, lm4857_set_reg),
494
SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
495
lm4857_get_reg, lm4857_set_reg),
499
* This is an example machine initialisation for a wm8753 connected to a
500
* neo1973 II. It is missing logic to detect hp/mic insertions and logic
501
* to re-route the audio in such an event.
503
static int neo1973_wm8753_init(struct snd_soc_codec *codec)
507
pr_debug("Entered %s\n", __func__);
509
/* set up NC codec pins */
510
snd_soc_dapm_nc_pin(codec, "LOUT2");
511
snd_soc_dapm_nc_pin(codec, "ROUT2");
512
snd_soc_dapm_nc_pin(codec, "OUT3");
513
snd_soc_dapm_nc_pin(codec, "OUT4");
514
snd_soc_dapm_nc_pin(codec, "LINE1");
515
snd_soc_dapm_nc_pin(codec, "LINE2");
517
/* Add neo1973 specific widgets */
518
snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
519
ARRAY_SIZE(wm8753_dapm_widgets));
521
/* set endpoints to default mode */
522
set_scenario_endpoints(codec, NEO_AUDIO_OFF);
524
/* add neo1973 specific controls */
525
err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
526
ARRAY_SIZE(8753_neo1973_controls));
530
/* set up neo1973 specific audio routes */
531
err = snd_soc_dapm_add_routes(codec, dapm_routes,
532
ARRAY_SIZE(dapm_routes));
534
snd_soc_dapm_sync(codec);
541
static struct snd_soc_dai bt_dai = {
547
.rates = SNDRV_PCM_RATE_8000,
548
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
552
.rates = SNDRV_PCM_RATE_8000,
553
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
556
static struct snd_soc_dai_link neo1973_dai[] = {
557
{ /* Hifi Playback - for similatious use with voice below */
559
.stream_name = "WM8753 HiFi",
560
.cpu_dai = &s3c24xx_i2s_dai,
561
.codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
562
.init = neo1973_wm8753_init,
563
.ops = &neo1973_hifi_ops,
567
.stream_name = "Voice",
569
.codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
570
.ops = &neo1973_voice_ops,
574
static struct snd_soc_card neo1973 = {
576
.platform = &s3c24xx_soc_platform,
577
.dai_link = neo1973_dai,
578
.num_links = ARRAY_SIZE(neo1973_dai),
581
static struct snd_soc_device neo1973_snd_devdata = {
583
.codec_dev = &soc_codec_dev_wm8753,
586
static int lm4857_i2c_probe(struct i2c_client *client,
587
const struct i2c_device_id *id)
589
pr_debug("Entered %s\n", __func__);
597
static int lm4857_i2c_remove(struct i2c_client *client)
599
pr_debug("Entered %s\n", __func__);
606
static u8 lm4857_state;
608
static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
610
pr_debug("Entered %s\n", __func__);
612
dev_dbg(&dev->dev, "lm4857_suspend\n");
613
lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
615
lm4857_regs[LM4857_CTRL] &= 0xf0;
621
static int lm4857_resume(struct i2c_client *dev)
623
pr_debug("Entered %s\n", __func__);
626
lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
632
static void lm4857_shutdown(struct i2c_client *dev)
634
pr_debug("Entered %s\n", __func__);
636
dev_dbg(&dev->dev, "lm4857_shutdown\n");
637
lm4857_regs[LM4857_CTRL] &= 0xf0;
641
static const struct i2c_device_id lm4857_i2c_id[] = {
642
{ "neo1973_lm4857", 0 },
646
static struct i2c_driver lm4857_i2c_driver = {
648
.name = "LM4857 I2C Amp",
649
.owner = THIS_MODULE,
651
.suspend = lm4857_suspend,
652
.resume = lm4857_resume,
653
.shutdown = lm4857_shutdown,
654
.probe = lm4857_i2c_probe,
655
.remove = lm4857_i2c_remove,
656
.id_table = lm4857_i2c_id,
659
static struct platform_device *neo1973_snd_device;
661
static int __init neo1973_init(void)
665
pr_debug("Entered %s\n", __func__);
667
if (!machine_is_neo1973_gta01()) {
669
"Only GTA01 hardware supported by ASoC driver\n");
673
neo1973_snd_device = platform_device_alloc("soc-audio", -1);
674
if (!neo1973_snd_device)
677
platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
678
neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
679
ret = platform_device_add(neo1973_snd_device);
682
platform_device_put(neo1973_snd_device);
686
ret = i2c_add_driver(&lm4857_i2c_driver);
689
platform_device_unregister(neo1973_snd_device);
694
static void __exit neo1973_exit(void)
696
pr_debug("Entered %s\n", __func__);
698
i2c_del_driver(&lm4857_i2c_driver);
699
platform_device_unregister(neo1973_snd_device);
702
module_init(neo1973_init);
703
module_exit(neo1973_exit);
705
/* Module information */
706
MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
707
MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
708
MODULE_LICENSE("GPL");