Release 4.7 sound/soc/samsung/s3c2412-i2s.c
/* sound/soc/samsung/s3c2412-i2s.c
*
* ALSA Soc Audio Layer - S3C2412 I2S driver
*
* Copyright (c) 2006 Wolfson Microelectronics PLC.
* Graeme Gregory graeme.gregory@wolfsonmicro.com
* linux@wolfsonmicro.com
*
* Copyright (c) 2007, 2004-2005 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
* 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/delay.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include <mach/gpio-samsung.h>
#include <plat/gpio-cfg.h>
#include "dma.h"
#include "regs-i2s-v2.h"
#include "s3c2412-i2s.h"
#include <linux/platform_data/asoc-s3c.h>
static struct s3c_dma_params s3c2412_i2s_pcm_stereo_out = {
.ch_name = "tx",
.dma_size = 4,
};
static struct s3c_dma_params s3c2412_i2s_pcm_stereo_in = {
.ch_name = "rx",
.dma_size = 4,
};
static struct s3c_i2sv2_info s3c2412_i2s;
static int s3c2412_i2s_probe(struct snd_soc_dai *dai)
{
int ret;
pr_debug("Entered %s\n", __func__);
samsung_asoc_init_dma_data(dai, &s3c2412_i2s_pcm_stereo_out,
&s3c2412_i2s_pcm_stereo_in);
ret = s3c_i2sv2_probe(dai, &s3c2412_i2s, S3C2410_PA_IIS);
if (ret)
return ret;
s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in;
s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out;
s3c2412_i2s.iis_cclk = devm_clk_get(dai->dev, "i2sclk");
if (IS_ERR(s3c2412_i2s.iis_cclk)) {
pr_err("failed to get i2sclk clock\n");
return PTR_ERR(s3c2412_i2s.iis_cclk);
}
/* Set MPLL as the source for IIS CLK */
clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll"));
clk_prepare_enable(s3c2412_i2s.iis_cclk);
s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk;
/* Configure the I2S pins (GPE0...GPE4) in correct mode */
s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
S3C_GPIO_PULL_NONE);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ben dooks | ben dooks | 116 | 75.82% | 3 | 25.00% |
| vasily khoruzhick | vasily khoruzhick | 13 | 8.50% | 2 | 16.67% |
| axel lin | axel lin | 9 | 5.88% | 1 | 8.33% |
| sylwester nawrocki | sylwester nawrocki | 9 | 5.88% | 1 | 8.33% |
| mark brown | mark brown | 4 | 2.61% | 3 | 25.00% |
| liam girdwood | liam girdwood | 2 | 1.31% | 2 | 16.67% |
| Total | 153 | 100.00% | 12 | 100.00% |
static int s3c2412_i2s_remove(struct snd_soc_dai *dai)
{
clk_disable_unprepare(s3c2412_i2s.iis_cclk);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| liam girdwood | liam girdwood | 20 | 95.24% | 1 | 50.00% |
| vasily khoruzhick | vasily khoruzhick | 1 | 4.76% | 1 | 50.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai);
u32 iismod;
pr_debug("Entered %s\n", __func__);
iismod = readl(i2s->regs + S3C2412_IISMOD);
pr_debug("%s: r: IISMOD: %x\n", __func__, iismod);
switch (params_width(params)) {
case 8:
iismod |= S3C2412_IISMOD_8BIT;
break;
case 16:
iismod &= ~S3C2412_IISMOD_8BIT;
break;
}
writel(iismod, i2s->regs + S3C2412_IISMOD);
pr_debug("%s: w: IISMOD: %x\n", __func__, iismod);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jassi brar | jassi brar | 106 | 96.36% | 1 | 33.33% |
| tushar behera | tushar behera | 3 | 2.73% | 1 | 33.33% |
| liam girdwood | liam girdwood | 1 | 0.91% | 1 | 33.33% |
| Total | 110 | 100.00% | 3 | 100.00% |
#define S3C2412_I2S_RATES \
(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
static const struct snd_soc_dai_ops s3c2412_i2s_dai_ops = {
.hw_params = s3c2412_i2s_hw_params,
};
static struct snd_soc_dai_driver s3c2412_i2s_dai = {
.probe = s3c2412_i2s_probe,
.remove = s3c2412_i2s_remove,
.playback = {
.channels_min = 2,
.channels_max = 2,
.rates = S3C2412_I2S_RATES,
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.channels_min = 2,
.channels_max = 2,
.rates = S3C2412_I2S_RATES,
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
},
.ops = &s3c2412_i2s_dai_ops,
};
static const struct snd_soc_component_driver s3c2412_i2s_component = {
.name = "s3c2412-i2s",
};
static int s3c2412_iis_dev_probe(struct platform_device *pdev)
{
int ret = 0;
struct resource *res;
struct s3c_audio_pdata *pdata = dev_get_platdata(&pdev->dev);
if (!pdata) {
dev_err(&pdev->dev, "missing platform data");
return -ENXIO;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
s3c2412_i2s.regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(s3c2412_i2s.regs))
return PTR_ERR(s3c2412_i2s.regs);
s3c2412_i2s_pcm_stereo_out.dma_addr = res->start + S3C2412_IISTXD;
s3c2412_i2s_pcm_stereo_out.slave = pdata->dma_playback;
s3c2412_i2s_pcm_stereo_in.dma_addr = res->start + S3C2412_IISRXD;
s3c2412_i2s_pcm_stereo_in.slave = pdata->dma_capture;
ret = s3c_i2sv2_register_component(&pdev->dev, -1,
&s3c2412_i2s_component,
&s3c2412_i2s_dai);
if (ret) {
pr_err("failed to register the dai\n");
return ret;
}
ret = samsung_asoc_dma_platform_register(&pdev->dev,
pdata->dma_filter);
if (ret)
pr_err("failed to register the DMA: %d\n", ret);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| vasily khoruzhick | vasily khoruzhick | 58 | 29.90% | 1 | 10.00% |
| arnd bergmann | arnd bergmann | 54 | 27.84% | 2 | 20.00% |
| padmavathi venna | padmavathi venna | 44 | 22.68% | 1 | 10.00% |
| liam girdwood | liam girdwood | 18 | 9.28% | 1 | 10.00% |
| wei yongjun | wei yongjun | 9 | 4.64% | 1 | 10.00% |
| kuninori morimoto | kuninori morimoto | 4 | 2.06% | 1 | 10.00% |
| heiko stuebner | heiko stuebner | 3 | 1.55% | 1 | 10.00% |
| ben dooks | ben dooks | 3 | 1.55% | 1 | 10.00% |
| tushar behera | tushar behera | 1 | 0.52% | 1 | 10.00% |
| Total | 194 | 100.00% | 10 | 100.00% |
static struct platform_driver s3c2412_iis_driver = {
.probe = s3c2412_iis_dev_probe,
.driver = {
.name = "s3c2412-iis",
},
};
module_platform_driver(s3c2412_iis_driver);
/* Module information */
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
MODULE_DESCRIPTION("S3C2412 I2S SoC Interface");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:s3c2412-iis");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ben dooks | ben dooks | 266 | 37.31% | 5 | 14.29% |
| jassi brar | jassi brar | 114 | 15.99% | 5 | 14.29% |
| vasily khoruzhick | vasily khoruzhick | 76 | 10.66% | 2 | 5.71% |
| liam girdwood | liam girdwood | 70 | 9.82% | 2 | 5.71% |
| arnd bergmann | arnd bergmann | 57 | 7.99% | 2 | 5.71% |
| padmavathi venna | padmavathi venna | 44 | 6.17% | 1 | 2.86% |
| kuninori morimoto | kuninori morimoto | 17 | 2.38% | 1 | 2.86% |
| mark brown | mark brown | 13 | 1.82% | 6 | 17.14% |
| eric miao | eric miao | 11 | 1.54% | 1 | 2.86% |
| wei yongjun | wei yongjun | 9 | 1.26% | 1 | 2.86% |
| axel lin | axel lin | 9 | 1.26% | 1 | 2.86% |
| sylwester nawrocki | sylwester nawrocki | 9 | 1.26% | 1 | 2.86% |
| sachin kamat | sachin kamat | 6 | 0.84% | 1 | 2.86% |
| tushar behera | tushar behera | 4 | 0.56% | 2 | 5.71% |
| heiko stuebner | heiko stuebner | 3 | 0.42% | 1 | 2.86% |
| paul gortmaker | paul gortmaker | 3 | 0.42% | 1 | 2.86% |
| lars-peter clausen | lars-peter clausen | 1 | 0.14% | 1 | 2.86% |
| seungwhan youn | seungwhan youn | 1 | 0.14% | 1 | 2.86% |
| Total | 713 | 100.00% | 35 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.