target/linux/omap/patches-3.12/415-ASoC-davinci-mcasp-Remove-redundant-num-serializer-D.patch

   1 From fdb8d3521ecae71865df66a84a1cbe13f7daa6f5 Mon Sep 17 00:00:00 2001
   2 From: Peter Ujfalusi <peter.ujfalusi@ti.com>
   3 Date: Mon, 23 Sep 2013 11:25:02 +0300
   4 Subject: [PATCH 226/752] ASoC: davinci: mcasp: Remove redundant
   5  num-serializer DT parameter
   6
   7 The serial-dir array gives this information so there is no need to have the
   8 num-serializer property in DT description.
   9 Just ignore the property in the driver the DTS files can be updated
  10 separately without regression.
  11 Update the documentation at the same time for davinci-mcasp
  12
  13 Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
  14 ---
  15  .../bindings/sound/davinci-mcasp-audio.txt         |    8 +++----
  16  sound/soc/davinci/davinci-mcasp.c                  |   22 +++++---------------
  17  2 files changed, 8 insertions(+), 22 deletions(-)
  18
  19 --- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
  20 +++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
  21 @@ -13,10 +13,9 @@ Required properties:
  22               good to keep "mpu" first in the list.
  23  - op-mode : I2S/DIT ops mode.
  24  - tdm-slots : Slots for TDM operation.
  25 -- num-serializer : Serializers used by McASP.
  26 -- serial-dir : A list of serializer pin mode. The list number should be equal
  27 -               to "num-serializer" parameter. Each entry is a number indication
  28 -               serializer pin direction. (0 - INACTIVE, 1 - TX, 2 - RX)
  29 +- serial-dir : A list of serializer configuration. Each entry is a number
  30 +               indication serializer pin direction.
  31 +               (0 - INACTIVE, 1 - TX, 2 - RX)
  32  - dmas: two element list of DMA controller phandles and DMA request line
  33          ordered pairs.
  34  - dma-names: identifier string for each DMA request line in the dmas property.
  35 @@ -45,7 +44,6 @@ mcasp0: mcasp0@1d00000 {
  36         interrupts-names = "tx", "rx";
  37         op-mode = <0>;          /* MCASP_IIS_MODE */
  38         tdm-slots = <2>;
  39 -       num-serializer = <16>;
  40         serial-dir = <
  41                         0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */
  42                         0 0 0 0
  43 --- a/sound/soc/davinci/davinci-mcasp.c
  44 +++ b/sound/soc/davinci/davinci-mcasp.c
  45 @@ -1050,7 +1050,6 @@ static struct snd_platform_data *davinci
  46         struct of_phandle_args dma_spec;
  47
  48         const u32 *of_serial_dir32;
  49 -       u8 *of_serial_dir;
  50         u32 val;
  51         int i, ret = 0;
  52
  53 @@ -1081,32 +1080,21 @@ static struct snd_platform_data *davinci
  54                 pdata->tdm_slots = val;
  55         }
  56
  57 -       ret = of_property_read_u32(np, "num-serializer", &val);
  58 -       if (ret >= 0)
  59 -               pdata->num_serializer = val;
  60 -
  61         of_serial_dir32 = of_get_property(np, "serial-dir", &val);
  62         val /= sizeof(u32);
  63 -       if (val != pdata->num_serializer) {
  64 -               dev_err(&pdev->dev,
  65 -                               "num-serializer(%d) != serial-dir size(%d)\n",
  66 -                               pdata->num_serializer, val);
  67 -               ret = -EINVAL;
  68 -               goto nodata;
  69 -       }
  70 -
  71         if (of_serial_dir32) {
  72 -               of_serial_dir = devm_kzalloc(&pdev->dev,
  73 -                                               (sizeof(*of_serial_dir) * val),
  74 -                                               GFP_KERNEL);
  75 +               u8 *of_serial_dir = devm_kzalloc(&pdev->dev,
  76 +                                                (sizeof(*of_serial_dir) * val),
  77 +                                                GFP_KERNEL);
  78                 if (!of_serial_dir) {
  79                         ret = -ENOMEM;
  80                         goto nodata;
  81                 }
  82
  83 -               for (i = 0; i < pdata->num_serializer; i++)
  84 +               for (i = 0; i < val; i++)
  85                         of_serial_dir[i] = be32_to_cpup(&of_serial_dir32[i]);
  86
  87 +               pdata->num_serializer = val;
  88                 pdata->serial_dir = of_serial_dir;
  89         }
  90