mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 18:56:39 +07:00
ac204d2290
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
186 lines
4.6 KiB
C
186 lines
4.6 KiB
C
/*
|
|
* sound/soc/samsung/smdk_wm8580pcm.c
|
|
*
|
|
* Copyright (c) 2011 Samsung Electronics Co. Ltd
|
|
*
|
|
* 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 <linux/module.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/pcm.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
|
|
#include "../codecs/wm8580.h"
|
|
#include "dma.h"
|
|
#include "pcm.h"
|
|
|
|
/*
|
|
* Board Settings:
|
|
* o '1' means 'ON'
|
|
* o '0' means 'OFF'
|
|
* o 'X' means 'Don't care'
|
|
*
|
|
* SMDK6410 Base B/D: CFG1-0000, CFG2-1111
|
|
* SMDKC110, SMDKV210: CFGB11-100100, CFGB12-0000
|
|
*/
|
|
|
|
#define SMDK_WM8580_EXT_OSC 12000000
|
|
#define SMDK_WM8580_EXT_MCLK 4096000
|
|
#define SMDK_WM8580_EXT_VOICE 2048000
|
|
|
|
static unsigned long mclk_freq;
|
|
static unsigned long xtal_freq;
|
|
|
|
/*
|
|
* If MCLK clock directly gets from XTAL, we don't have to use PLL
|
|
* to make MCLK, but if XTAL clock source connects with other codec
|
|
* pin (like XTI), we should have to set codec's PLL to make MCLK.
|
|
* Because Samsung SoC does not support pcmcdclk output like I2S.
|
|
*/
|
|
|
|
static int smdk_wm8580_pcm_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;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int rfs, ret;
|
|
|
|
switch (params_rate(params)) {
|
|
case 8000:
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "%s:%d Sampling Rate %u not supported!\n",
|
|
__func__, __LINE__, params_rate(params));
|
|
return -EINVAL;
|
|
}
|
|
|
|
rfs = mclk_freq / params_rate(params) / 2;
|
|
|
|
/* Set the codec DAI configuration */
|
|
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B
|
|
| SND_SOC_DAIFMT_IB_NF
|
|
| SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set the cpu DAI configuration */
|
|
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_B
|
|
| SND_SOC_DAIFMT_IB_NF
|
|
| SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (mclk_freq == xtal_freq) {
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_MCLK,
|
|
mclk_freq, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
|
|
WM8580_CLKSRC_MCLK);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
|
|
mclk_freq, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
|
|
WM8580_CLKSRC_PLLA);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
|
|
xtal_freq, mclk_freq);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* Set PCM source clock on CPU */
|
|
ret = snd_soc_dai_set_sysclk(cpu_dai, S3C_PCM_CLKSRC_MUX,
|
|
mclk_freq, SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set SCLK_DIV for making bclk */
|
|
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_PCM_SCLK_PER_FS, rfs);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_ops smdk_wm8580_pcm_ops = {
|
|
.hw_params = smdk_wm8580_pcm_hw_params,
|
|
};
|
|
|
|
static struct snd_soc_dai_link smdk_dai[] = {
|
|
{
|
|
.name = "WM8580 PAIF PCM RX",
|
|
.stream_name = "Playback",
|
|
.cpu_dai_name = "samsung-pcm.0",
|
|
.codec_dai_name = "wm8580-hifi-playback",
|
|
.platform_name = "samsung-audio",
|
|
.codec_name = "wm8580.0-001b",
|
|
.ops = &smdk_wm8580_pcm_ops,
|
|
}, {
|
|
.name = "WM8580 PAIF PCM TX",
|
|
.stream_name = "Capture",
|
|
.cpu_dai_name = "samsung-pcm.0",
|
|
.codec_dai_name = "wm8580-hifi-capture",
|
|
.platform_name = "samsung-pcm.0",
|
|
.codec_name = "wm8580.0-001b",
|
|
.ops = &smdk_wm8580_pcm_ops,
|
|
},
|
|
};
|
|
|
|
static struct snd_soc_card smdk_pcm = {
|
|
.name = "SMDK-PCM",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = smdk_dai,
|
|
.num_links = 2,
|
|
};
|
|
|
|
/*
|
|
* After SMDKC110 Base Board's Rev is '0.1', 12MHz External OSC(X1)
|
|
* is absent (or not connected), so we connect EXT_VOICE_CLK(OSC4),
|
|
* 2.0484Mhz, directly with MCLK both Codec and SoC.
|
|
*/
|
|
static int snd_smdk_probe(struct platform_device *pdev)
|
|
{
|
|
int ret = 0;
|
|
|
|
xtal_freq = SMDK_WM8580_EXT_OSC;
|
|
mclk_freq = SMDK_WM8580_EXT_MCLK;
|
|
|
|
if (machine_is_smdkc110() || machine_is_smdkv210())
|
|
xtal_freq = mclk_freq = SMDK_WM8580_EXT_VOICE;
|
|
|
|
smdk_pcm.dev = &pdev->dev;
|
|
ret = devm_snd_soc_register_card(&pdev->dev, &smdk_pcm);
|
|
if (ret)
|
|
dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct platform_driver snd_smdk_driver = {
|
|
.driver = {
|
|
.name = "samsung-smdk-pcm",
|
|
},
|
|
.probe = snd_smdk_probe,
|
|
};
|
|
|
|
module_platform_driver(snd_smdk_driver);
|
|
|
|
MODULE_AUTHOR("Sangbeom Kim, <sbkim73@samsung.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC SMDK WM8580 for PCM");
|
|
MODULE_LICENSE("GPL");
|