Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5cd919a2144f1beee7fb2e18ef6b8bee7105f554
Commit: 5cd919a2144f1beee7fb2e18ef6b8bee7105f554
Parent: 96d90e19307ce590097295026a2e1b36618ddd01
Author: Graeme Gregory <[EMAIL PROTECTED]>
AuthorDate: Thu Jan 10 14:44:58 2008 +0100
Committer: Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Thu Jan 31 17:29:51 2008 +0100
[ALSA] soc - Support suspend and resume of the I2S interface on s3c24xx
Signed-off-by: Graeme Gregory <[EMAIL PROTECTED]>
Signed-off-by: Mark Brown <[EMAIL PROTECTED]>
Signed-off-by: Takashi Iwai <[EMAIL PROTECTED]>
Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
sound/soc/s3c24xx/s3c24xx-i2s.c | 38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/sound/soc/s3c24xx/s3c24xx-i2s.c b/sound/soc/s3c24xx/s3c24xx-i2s.c
index ff99b76..0a3c630 100644
--- a/sound/soc/s3c24xx/s3c24xx-i2s.c
+++ b/sound/soc/s3c24xx/s3c24xx-i2s.c
@@ -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,
-
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