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- /*
- * smdk2450_wm8580.c -- SoC audio for Neo1973
- *
- * Copyright 2007 Wolfson Microelectronics PLC.
- * Author: Graeme Gregory
- * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
- *
- * Copyright (C) 2007, Ryu Euiyoul <ryu.real@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * Revision history
- * 20th Jan 2007 Initial version.
- * 05th Feb 2007 Rename all to Neo1973
- *
- */
- #include <linux/module.h>
- #include <linux/moduleparam.h>
- #include <linux/timer.h>
- #include <linux/interrupt.h>
- #include <linux/platform_device.h>
- #include <linux/i2c.h>
- #include <sound/driver.h>
- #include <sound/core.h>
- #include <sound/pcm.h>
- #include <sound/soc.h>
- #include <sound/soc-dapm.h>
- #include <asm/mach-types.h>
- #include <asm/hardware/scoop.h>
- #include <asm/arch/regs-iis.h>
- #include <asm/arch/regs-gpio.h>
- #include <asm/hardware.h>
- #include <asm/arch/audio.h>
- #include <asm/io.h>
- #include <asm/arch/spi-gpio.h>
- #include <asm/arch/regs-s3c2450-clock.h>
- #include "../codecs/wm8580.h"
- #include "s3c-pcm.h"
- #include "s3c-i2s.h"
- /* define the scenarios */
- #define SMDK_AUDIO_OFF 0
- #define SMDK_CAPTURE_MIC1 3
- #define SMDK_STEREO_TO_HEADPHONES 2
- #define SMDK_CAPTURE_LINE_IN 1
- #ifdef CONFIG_SND_DEBUG
- #define s3cdbg(x...) printk(x)
- #else
- #define s3cdbg(x...)
- #endif
- static int smdk_hifi_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
- {
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- //struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
- struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
- unsigned int pll_out = 0;
- int ret = 0;
- unsigned int regs;
- unsigned int prescaler=0;
- s3cdbg("Entered %s, rate = %d\n", __FUNCTION__, params_rate(params));
- /* Select Clock source EPLL */
- regs = readl(S3C2443_CLKSRC);
- regs &= ~(3<<14);
- regs |= S3C2443_CLKSRC_I2S_EPLLDIV;
- regs = (regs & ~(3<<7))|(2<<7);
- writel(regs, S3C2443_CLKSRC);
- regs |= (1<<6);
- writel(regs, S3C2443_CLKSRC);
- regs = readl(S3C2443_SCLKCON);
- regs |= S3C2443_SCLKCON_I2SCLK;
- writel(regs, S3C2443_SCLKCON);
- s3cdbg("%s: %d , params = %d \n", __FUNCTION__, __LINE__, params_rate(params));
- switch (params_rate(params)) {
- case 8000:
- case 16000:
- case 32000:
- case 48000:
- case 64000:
- case 96000:
- writel(9962, S3C2450_EPLLCON_K);
- writel((49<<16)|(1<<8)|(3<<0) ,S3C2443_EPLLCON);
- break;
- case 11025:
- case 22050:
- case 44100:
- case 88200:
- writel(10381, S3C2450_EPLLCON_K);
- writel((45<<16)|(1<<8)|(2<<0) ,S3C2443_EPLLCON);
- break;
- default:
- printk("Unsupported rate = %d\n", params_rate(params));
- break;
- }
- switch (params_rate(params)) {
- case 8000:
- pll_out = 18432000;
- prescaler = 24;
- break;
- case 11025:
- pll_out = 16934400;
- prescaler = 32;
- break;
- case 16000:
- pll_out = 18432000;
- prescaler = 12;
- break;
- case 22050:
- pll_out = 16934400;
- prescaler = 16;
- break;
- case 32000:
- pll_out = 18432000;
- prescaler = 6;
- break;
- case 44100:
- pll_out = 16934400;
- prescaler = 8;
- break;
- case 48000:
- pll_out = 18432000;
- prescaler = 4;
- break;
- case 64000:
- pll_out = 18432000;
- prescaler = 3;
- break;
- case 88200:
- pll_out = 16934400;
- prescaler = 4;
- break;
- case 96000:
- pll_out = 18432000;
- prescaler = 2;
- break;
- }
- /* set cpu DAI configuration */
- ret = cpu_dai->dai_ops.set_fmt(cpu_dai,
- SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBS_CFS );
- if (ret < 0)
- return ret;
- /* set MCLK division for sample rate */
- ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
- S3C2410_IISMOD_32FS );
- if (ret < 0)
- return ret;
- /* set prescaler division for sample rate */
- ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
- // ((prescaler/2 - 1) << 0x8));
- ((prescaler - 1) << 0x8));
- if (ret < 0)
- return ret;
- return 0;
- }
- static int smdk_hifi_hw_free(struct snd_pcm_substream *substream)
- {
- // struct snd_soc_pcm_runtime *rtd = substream->private_data;
- // struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
- /* disable the PLL */
- //return codec_dai->dai_ops.set_pll(codec_dai, WM8580_PLL1, 0, 0);
- //return codec_dai->dai_ops.set_pll(codec_dai, 0, 0, 0);
- return 0;
- }
- /*
- * Neo1973 WM8580 HiFi DAI opserations.
- */
- static struct snd_soc_ops smdk_hifi_ops = {
- .hw_params = smdk_hifi_hw_params,
- .hw_free = smdk_hifi_hw_free,
- };
- static int smdk_scenario = 0;
- static int smdk_get_scenario(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- ucontrol->value.integer.value[0] = smdk_scenario;
- return 0;
- }
- static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
- {
- switch(smdk_scenario) {
- case SMDK_AUDIO_OFF:
- snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
- snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 0);
- snd_soc_dapm_set_endpoint(codec, "Line In Jack", 0);
- break;
- case SMDK_STEREO_TO_HEADPHONES:
- snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
- snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 0);
- snd_soc_dapm_set_endpoint(codec, "Line In Jack", 0);
- break;
- case SMDK_CAPTURE_MIC1:
- snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
- snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 1);
- snd_soc_dapm_set_endpoint(codec, "Line In Jack", 0);
- break;
- case SMDK_CAPTURE_LINE_IN:
- snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
- snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 0);
- snd_soc_dapm_set_endpoint(codec, "Line In Jack", 1);
- break;
- default:
- snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
- snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 1);
- snd_soc_dapm_set_endpoint(codec, "Line In Jack", 1);
- break;
- }
- snd_soc_dapm_sync_endpoints(codec);
- return 0;
- }
- static int smdk_set_scenario(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- if (smdk_scenario == ucontrol->value.integer.value[0])
- return 0;
- smdk_scenario = ucontrol->value.integer.value[0];
- set_scenario_endpoints(codec, smdk_scenario);
- return 1;
- }
- static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
- SND_SOC_DAPM_HP("Headphone Jack", NULL),
- SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
- SND_SOC_DAPM_LINE("Line In Jack", NULL),
- };
- /* example machine audio_mapnections */
- static const char* audio_map[][3] = {
- {"Headphone Jack", NULL, "LOUT1"},
- {"Headphone Jack", NULL, "ROUT1"},
- /* mic is connected to mic1 - with bias */
- /* mic is connected to mic1 - with bias */
- {"MIC1", NULL, "Mic1 Jack"},
- {"LINE1", NULL, "Line In Jack"},
- {"LINE2", NULL, "Line In Jack"},
- /* Connect the ALC pins */
- {"ACIN", NULL, "ACOP"},
-
- {NULL, NULL, NULL},
- };
- static const char *smdk_scenarios[] = {
- "Off",
- "Capture Line In",
- "Headphones",
- "Capture Mic1",
- };
- static const struct soc_enum smdk_scenario_enum[] = {
- SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(smdk_scenarios),smdk_scenarios),
- };
- static const struct snd_kcontrol_new wm8580_smdk_controls[] = {
- SOC_ENUM_EXT("SMDK Mode", smdk_scenario_enum[0],
- smdk_get_scenario, smdk_set_scenario),
- };
- /*
- * This is an example machine initialisation for a wm8580 connected to a
- * smdk2450. It is missing logic to detect hp/mic insertions and logic
- * to re-route the audio in such an event.
- */
- static int smdk_wm8580_init(struct snd_soc_codec *codec)
- {
- int i, err;
- /* set endpoints to default mode */
- set_scenario_endpoints(codec, SMDK_AUDIO_OFF);
- /* Add smdk2450 specific widgets */
- for (i = 0; i < ARRAY_SIZE(wm8580_dapm_widgets); i++)
- snd_soc_dapm_new_control(codec, &wm8580_dapm_widgets[i]);
- /* add smdk2450 specific controls */
- for (i = 0; i < ARRAY_SIZE(wm8580_smdk_controls); i++) {
- err = snd_ctl_add(codec->card,
- snd_soc_cnew(&wm8580_smdk_controls[i],
- codec, NULL));
- if (err < 0)
- return err;
- }
- /* set up smdk2450 specific audio path audio_mapnects */
- for (i = 0; audio_map[i][0] != NULL; i++) {
- snd_soc_dapm_connect_input(codec, audio_map[i][0],
- audio_map[i][1], audio_map[i][2]);
- }
- /* always connected */
- snd_soc_dapm_set_endpoint(codec, "Mic1 Jack", 1);
- snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
- snd_soc_dapm_set_endpoint(codec, "Line In Jack", 1);
- snd_soc_dapm_sync_endpoints(codec);
- return 0;
- }
- static struct snd_soc_dai_link smdk_dai[] = {
- { /* Hifi Playback - for similatious use with voice below */
- .name = "WM8580",
- .stream_name = "WM8580 HiFi",
- .cpu_dai = &s3c_i2s_dai,
- .codec_dai = &wm8580_dai[0],
- .init = smdk_wm8580_init,
- .ops = &smdk_hifi_ops,
- },
- };
- static struct snd_soc_machine smdk2450 = {
- .name = "smdk2450",
- .dai_link = smdk_dai,
- .num_links = ARRAY_SIZE(smdk_dai),
- };
- static struct wm8580_setup_data smdk_wm8580_setup = {
- /* wm8580 i2c address 0x36 for write*/
- .i2c_address = 0x1b,
- };
- static struct snd_soc_device smdk_snd_devdata = {
- .machine = &smdk2450,
- .platform = &s3c24xx_soc_platform,
- .codec_dev = &soc_codec_dev_wm8580,
- .codec_data = &smdk_wm8580_setup,
- };
- static struct platform_device *smdk_snd_device;
- static int __init s3c_init(void)
- {
- int ret;
- smdk_snd_device = platform_device_alloc("soc-audio", -1);
- if (!smdk_snd_device)
- return -ENOMEM;
- platform_set_drvdata(smdk_snd_device, &smdk_snd_devdata);
- smdk_snd_devdata.dev = &smdk_snd_device->dev;
- ret = platform_device_add(smdk_snd_device);
- if (ret)
- platform_device_put(smdk_snd_device);
-
- return ret;
- }
- static void __exit s3c_exit(void)
- {
- platform_device_unregister(smdk_snd_device);
- }
- module_init(s3c_init);
- module_exit(s3c_exit);
- /* Module information */
- MODULE_AUTHOR("Ryu Euiyoul");
- MODULE_DESCRIPTION("ALSA SoC WM8580 SMDK");
- MODULE_LICENSE("GPL");
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