target/linux/s3c24xx/patches-2.6.24/1059-iis-suspend.patch.patch

   1 From 148a1026b1975e3a50981cf7df3d4aae2b34611e Mon Sep 17 00:00:00 2001
   2 From: mokopatches <mokopatches@openmoko.org>
   3 Date: Sun, 13 Apr 2008 07:23:53 +0100
   4 Subject: [PATCH] iis-suspend.patch
   5
   6 ---
   7  sound/soc/s3c24xx/s3c24xx-i2s.c |   38 ++++++++++++++++++++++++++++++++++++++
   8  1 files changed, 38 insertions(+), 0 deletions(-)
   9
  10 diff --git a/sound/soc/s3c24xx/s3c24xx-i2s.c b/sound/soc/s3c24xx/s3c24xx-i2s.c
  11 index fe30e0d..4d74cc0 100644
  12 --- a/sound/soc/s3c24xx/s3c24xx-i2s.c
  13 +++ b/sound/soc/s3c24xx/s3c24xx-i2s.c
  14 @@ -76,6 +76,10 @@ static struct s3c24xx_pcm_dma_params s3c24xx_i2s_pcm_stereo_in = {
  15  struct s3c24xx_i2s_info {
  16         void __iomem    *regs;
  17         struct clk      *iis_clk;
  18 +       u32             iiscon;
  19 +       u32             iismod;
  20 +       u32             iisfcon;
  21 +       u32             iispsr;
  22  };
  23  static struct s3c24xx_i2s_info s3c24xx_i2s;
  24
  25 @@ -406,6 +410,38 @@ static int s3c24xx_i2s_probe(struct platform_device *pdev)
  26         return 0;
  27  }
  28
  29 +#ifdef CONFIG_PM
  30 +int s3c24xx_i2s_suspend(struct platform_device *pdev,
  31 +                struct snd_soc_cpu_dai *cpu_dai)
  32 +{
  33 +       s3c24xx_i2s.iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);
  34 +       s3c24xx_i2s.iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
  35 +       s3c24xx_i2s.iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);
  36 +       s3c24xx_i2s.iispsr = readl(s3c24xx_i2s.regs + S3C2410_IISPSR);
  37 +
  38 +       clk_disable(s3c24xx_i2s.iis_clk);
  39 +
  40 +       return 0;
  41 +}
  42 +
  43 +int s3c24xx_i2s_resume(struct platform_device *pdev,
  44 +                struct snd_soc_cpu_dai *cpu_dai)
  45 +{
  46 +       clk_enable(s3c24xx_i2s.iis_clk);
  47 +
  48 +        writel(s3c24xx_i2s.iiscon, s3c24xx_i2s.regs + S3C2410_IISCON);
  49 +        writel(s3c24xx_i2s.iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
  50 +        writel(s3c24xx_i2s.iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);
  51 +        writel(s3c24xx_i2s.iispsr, s3c24xx_i2s.regs + S3C2410_IISPSR);
  52 +
  53 +       return 0;
  54 +}
  55 +#else
  56 +#define s3c24xx_i2s_suspend NULL
  57 +#define s3c24xx_i2s_resume NULL
  58 +#endif
  59 +
  60 +
  61  #define S3C24XX_I2S_RATES \
  62         (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
  63         SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
  64 @@ -416,6 +452,8 @@ struct snd_soc_cpu_dai s3c24xx_i2s_dai = {
  65         .id = 0,
  66         .type = SND_SOC_DAI_I2S,
  67         .probe = s3c24xx_i2s_probe,
  68 +       .suspend = s3c24xx_i2s_suspend,
  69 +       .resume = s3c24xx_i2s_resume,
  70         .playback = {
  71                 .channels_min = 2,
  72                 .channels_max = 2,
  73 --
  74 1.5.6.5
  75