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/*
* smdk_wm8994.c
*
* 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.
*/
#include "../codecs/wm8994.h"
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
/*
* Default CFG switch settings to use this driver:
* SMDKV310: CFG5-1000, CFG7-111111
*/
/*
* Configure audio route as :-
* $ amixer sset 'DAC1' on,on
* $ amixer sset 'Right Headphone Mux' 'DAC'
* $ amixer sset 'Left Headphone Mux' 'DAC'
* $ amixer sset 'DAC1R Mixer AIF1.1' on
* $ amixer sset 'DAC1L Mixer AIF1.1' on
* $ amixer sset 'IN2L' on
* $ amixer sset 'IN2L PGA IN2LN' on
* $ amixer sset 'MIXINL IN2L' on
* $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
* $ amixer sset 'IN2R' on
* $ amixer sset 'IN2R PGA IN2RN' on
* $ amixer sset 'MIXINR IN2R' on
* $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
*/
/* SMDK has a 16.934MHZ crystal attached to WM8994 */
#define SMDK_WM8994_FREQ 16934000
struct smdk_wm8994_data {
int mclk1_rate;
};
/* Default SMDKs */
static struct smdk_wm8994_data smdk_board_data = {
.mclk1_rate = SMDK_WM8994_FREQ,
};
static int smdk_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_dai *codec_dai = rtd->codec_dai;
unsigned int pll_out;
int ret;
/* AIF1CLK should be >=3MHz for optimal performance */
if (params_width(params) == 24)
pll_out = params_rate(params) * 384;
else if (params_rate(params) == 8000 || params_rate(params) == 11025)
pll_out = params_rate(params) * 512;
else
pll_out = params_rate(params) * 256;
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
SMDK_WM8994_FREQ, pll_out);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
pll_out, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
/*
* SMDK WM8994 DAI operations.
*/
static struct snd_soc_ops smdk_ops = {
.hw_params = smdk_hw_params,
};
static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
/* Other pins NC */
snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
snd_soc_dapm_nc_pin(dapm, "IN1LP");
snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
snd_soc_dapm_nc_pin(dapm, "IN1RP");
snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
return 0;
}
static struct snd_soc_dai_link smdk_dai[] = {
{ /* Primary DAI i/f */
.name = "WM8994 AIF1",
.stream_name = "Pri_Dai",
.cpu_dai_name = "samsung-i2s.0",
.codec_dai_name = "wm8994-aif1",
.platform_name = "samsung-i2s.0",
.codec_name = "wm8994-codec",
.init = smdk_wm8994_init_paiftx,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &smdk_ops,
}, { /* Sec_Fifo Playback i/f */
.name = "Sec_FIFO TX",
.stream_name = "Sec_Dai",
.cpu_dai_name = "samsung-i2s-sec",
.codec_dai_name = "wm8994-aif1",
.platform_name = "samsung-i2s-sec",
.codec_name = "wm8994-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &smdk_ops,
},
};
static struct snd_soc_card smdk = {
.name = "SMDK-I2S",
.owner = THIS_MODULE,
.dai_link = smdk_dai,
.num_links = ARRAY_SIZE(smdk_dai),
};
static const struct of_device_id samsung_wm8994_of_match[] = {
{ .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
{},
};
MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
static int smdk_audio_probe(struct platform_device *pdev)
{
int ret;
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &smdk;
struct smdk_wm8994_data *board;
const struct of_device_id *id;
card->dev = &pdev->dev;
board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
if (!board)
return -ENOMEM;
if (np) {
smdk_dai[0].cpu_dai_name = NULL;
smdk_dai[0].cpu_of_node = of_parse_phandle(np,
"samsung,i2s-controller", 0);
if (!smdk_dai[0].cpu_of_node) {
dev_err(&pdev->dev,
"Property 'samsung,i2s-controller' missing or invalid\n");
ret = -EINVAL;
}
smdk_dai[0].platform_name = NULL;
smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
}
id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
if (id)
*board = *((struct smdk_wm8994_data *)id->data);
platform_set_drvdata(pdev, board);
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
return ret;
}
static struct platform_driver smdk_audio_driver = {
.driver = {
.name = "smdk-audio-wm8994",
.of_match_table = of_match_ptr(samsung_wm8994_of_match),
.pm = &snd_soc_pm_ops,
},
.probe = smdk_audio_probe,
};
module_platform_driver(smdk_audio_driver);
MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:smdk-audio-wm8994");
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