target/linux/s3c24xx/patches-2.6.24/1060-s3c24xx-pcm-suspend.patch.patch

   1 From 1179eb1bf9d827aaa2b4b6adc4ba135bf9074bcc 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] s3c24xx-pcm-suspend.patch
   5
   6 ---
   7  sound/soc/s3c24xx/s3c24xx-pcm.c |   48 ++++++++++++++++++++------------------
   8  1 files changed, 25 insertions(+), 23 deletions(-)
   9
  10 diff --git a/sound/soc/s3c24xx/s3c24xx-pcm.c b/sound/soc/s3c24xx/s3c24xx-pcm.c
  11 index 4107a87..e9f3b60 100644
  12 --- a/sound/soc/s3c24xx/s3c24xx-pcm.c
  13 +++ b/sound/soc/s3c24xx/s3c24xx-pcm.c
  14 @@ -49,7 +49,9 @@ static const struct snd_pcm_hardware s3c24xx_pcm_hardware = {
  15         .info                   = SNDRV_PCM_INFO_INTERLEAVED |
  16                                     SNDRV_PCM_INFO_BLOCK_TRANSFER |
  17                                     SNDRV_PCM_INFO_MMAP |
  18 -                                   SNDRV_PCM_INFO_MMAP_VALID,
  19 +                                   SNDRV_PCM_INFO_MMAP_VALID |
  20 +                                   SNDRV_PCM_INFO_PAUSE |
  21 +                                   SNDRV_PCM_INFO_RESUME,
  22         .formats                = SNDRV_PCM_FMTBIT_S16_LE |
  23                                     SNDRV_PCM_FMTBIT_U16_LE |
  24                                     SNDRV_PCM_FMTBIT_U8 |
  25 @@ -176,28 +178,6 @@ static int s3c24xx_pcm_hw_params(struct snd_pcm_substream *substream,
  26                 }
  27         }
  28
  29 -       /* channel needs configuring for mem=>device, increment memory addr,
  30 -        * sync to pclk, half-word transfers to the IIS-FIFO. */
  31 -       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
  32 -               s3c2410_dma_devconfig(prtd->params->channel,
  33 -                               S3C2410_DMASRC_MEM, S3C2410_DISRCC_INC |
  34 -                               S3C2410_DISRCC_APB, prtd->params->dma_addr);
  35 -
  36 -               s3c2410_dma_config(prtd->params->channel,
  37 -                               prtd->params->dma_size,
  38 -                               S3C2410_DCON_SYNC_PCLK |
  39 -                               S3C2410_DCON_HANDSHAKE);
  40 -       } else {
  41 -               s3c2410_dma_config(prtd->params->channel,
  42 -                               prtd->params->dma_size,
  43 -                               S3C2410_DCON_HANDSHAKE |
  44 -                               S3C2410_DCON_SYNC_PCLK);
  45 -
  46 -               s3c2410_dma_devconfig(prtd->params->channel,
  47 -                                       S3C2410_DMASRC_HW, 0x3,
  48 -                                       prtd->params->dma_addr);
  49 -       }
  50 -
  51         s3c2410_dma_set_buffdone_fn(prtd->params->channel,
  52                                     s3c24xx_audio_buffdone);
  53
  54 @@ -246,6 +226,28 @@ static int s3c24xx_pcm_prepare(struct snd_pcm_substream *substream)
  55         if (!prtd->params)
  56                 return 0;
  57
  58 +       /* channel needs configuring for mem=>device, increment memory addr,
  59 +        * sync to pclk, half-word transfers to the IIS-FIFO. */
  60 +       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
  61 +               s3c2410_dma_devconfig(prtd->params->channel,
  62 +                               S3C2410_DMASRC_MEM, S3C2410_DISRCC_INC |
  63 +                               S3C2410_DISRCC_APB, prtd->params->dma_addr);
  64 +
  65 +               s3c2410_dma_config(prtd->params->channel,
  66 +                               prtd->params->dma_size,
  67 +                               S3C2410_DCON_SYNC_PCLK |
  68 +                               S3C2410_DCON_HANDSHAKE);
  69 +       } else {
  70 +               s3c2410_dma_config(prtd->params->channel,
  71 +                               prtd->params->dma_size,
  72 +                               S3C2410_DCON_HANDSHAKE |
  73 +                               S3C2410_DCON_SYNC_PCLK);
  74 +
  75 +               s3c2410_dma_devconfig(prtd->params->channel,
  76 +                                       S3C2410_DMASRC_HW, 0x3,
  77 +                                       prtd->params->dma_addr);
  78 +       }
  79 +
  80         /* flush the DMA channel */
  81         s3c2410_dma_ctrl(prtd->params->channel, S3C2410_DMAOP_FLUSH);
  82         prtd->dma_loaded = 0;
  83 --
  84 1.5.6.5
  85