[ALSA] soc - Support suspend and resume of the I2S interface on s3c24xx
Signed-off-by: Graeme Gregory <graeme@openmoko.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
parent
96d90e1930
commit
5cd919a214
1 changed files with 38 additions and 0 deletions
|
@ -76,6 +76,10 @@ static struct s3c24xx_pcm_dma_params s3c24xx_i2s_pcm_stereo_in = {
|
|||
struct s3c24xx_i2s_info {
|
||||
void __iomem *regs;
|
||||
struct clk *iis_clk;
|
||||
u32 iiscon;
|
||||
u32 iismod;
|
||||
u32 iisfcon;
|
||||
u32 iispsr;
|
||||
};
|
||||
static struct s3c24xx_i2s_info s3c24xx_i2s;
|
||||
|
||||
|
@ -406,6 +410,38 @@ static int s3c24xx_i2s_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
int s3c24xx_i2s_suspend(struct platform_device *pdev,
|
||||
struct snd_soc_cpu_dai *cpu_dai)
|
||||
{
|
||||
s3c24xx_i2s.iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);
|
||||
s3c24xx_i2s.iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
|
||||
s3c24xx_i2s.iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);
|
||||
s3c24xx_i2s.iispsr = readl(s3c24xx_i2s.regs + S3C2410_IISPSR);
|
||||
|
||||
clk_disable(s3c24xx_i2s.iis_clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int s3c24xx_i2s_resume(struct platform_device *pdev,
|
||||
struct snd_soc_cpu_dai *cpu_dai)
|
||||
{
|
||||
clk_enable(s3c24xx_i2s.iis_clk);
|
||||
|
||||
writel(s3c24xx_i2s.iiscon, s3c24xx_i2s.regs + S3C2410_IISCON);
|
||||
writel(s3c24xx_i2s.iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
|
||||
writel(s3c24xx_i2s.iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);
|
||||
writel(s3c24xx_i2s.iispsr, s3c24xx_i2s.regs + S3C2410_IISPSR);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define s3c24xx_i2s_suspend NULL
|
||||
#define s3c24xx_i2s_resume NULL
|
||||
#endif
|
||||
|
||||
|
||||
#define S3C24XX_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 | \
|
||||
|
@ -416,6 +452,8 @@ struct snd_soc_cpu_dai s3c24xx_i2s_dai = {
|
|||
.id = 0,
|
||||
.type = SND_SOC_DAI_I2S,
|
||||
.probe = s3c24xx_i2s_probe,
|
||||
.suspend = s3c24xx_i2s_suspend,
|
||||
.resume = s3c24xx_i2s_resume,
|
||||
.playback = {
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
|
|
Reference in a new issue