[Intel-gfx] [PATCH] intel_infoframes: Dump HDMI vendor infoframes

[Rodrigo Vivi]

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>

On Wed, Sep 26, 2012 at 2:17 PM, Damien Lespiau
<damien.lespiau at gmail.com> wrote:
> From: Damien Lespiau <damien.lespiau at intel.com>
>
> Those infoframes are programmed when using stereo 3D modes.
>
> Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
> ---
>  tools/intel_infoframes.c |   63 +++++++++++++++++++++++++++++++++++++++++++++-
>  1 files changed, 62 insertions(+), 1 deletions(-)
>
> diff --git a/tools/intel_infoframes.c b/tools/intel_infoframes.c
> index d74df64..66351ac 100644
> --- a/tools/intel_infoframes.c
> +++ b/tools/intel_infoframes.c
> @@ -125,6 +125,8 @@ typedef enum {
>  #define SPD_INFOFRAME_VERSION 0x01
>  #define SPD_INFOFRAME_LENGTH  0x19
>
> +#define VENDOR_ID_HDMI 0x000c03
> +
>  typedef struct {
>         uint8_t type;
>         uint8_t version;
> @@ -175,6 +177,21 @@ typedef union {
>         } __attribute__((packed)) spd;
>         struct {
>                 DipInfoFrameHeader header;
> +               uint8_t checksum;
> +
> +               uint8_t id[3];
> +
> +               uint8_t Rsvd0        :5;
> +               uint8_t video_format :3;
> +
> +               uint8_t Rsvd1         :4;
> +               uint8_t s3d_structure :4;
> +
> +               uint8_t Rsvd2        :4;
> +               uint8_t s3d_ext_data :4;
> +       } __attribute__((packed)) vendor;
> +       struct {
> +               DipInfoFrameHeader header;
>                 uint8_t body[27];
>         } generic;
>         uint8_t data8[128];
> @@ -424,10 +441,45 @@ static void dump_avi_info(Transcoder transcoder)
>                 printf("Invalid InfoFrame checksum!\n");
>  }
>
> +static const char *vendor_id_to_string(uint32_t id)
> +{
> +       switch (id) {
> +       case VENDOR_ID_HDMI:
> +               return "HDMI";
> +       default:
> +               return "Unknown";
> +       }
> +}
> +
> +static const char *s3d_structure_to_string(int format)
> +{
> +       switch (format) {
> +       case 0:
> +               return "Frame Packing";
> +       case 6:
> +               return "Top Bottom";
> +       case 8:
> +               return "Side By Side (half)";
> +       default:
> +               return "Reserved";
> +       }
> +}
> +
> +static void dump_vendor_hdmi(DipInfoFrame *frame)
> +{
> +       int s3d_present = frame->vendor.video_format & 0x2;
> +
> +       printf("- video format: 0x%03x %s\n", frame->vendor.video_format,
> +              s3d_present ? "(3D)" : "");
> +       if (s3d_present)
> +               printf("- 3D Format: %s\n",
> +                      s3d_structure_to_string(frame->vendor.s3d_structure));
> +}
> +
>  static void dump_vendor_info(Transcoder transcoder)
>  {
>         Register reg = get_dip_ctl_reg(transcoder);
> -       uint32_t val;
> +       uint32_t val, vendor_id;
>         DipFrequency freq;
>         DipInfoFrame frame;
>
> @@ -446,6 +498,15 @@ static void dump_vendor_info(Transcoder transcoder)
>
>         dump_raw_infoframe(&frame);
>
> +       vendor_id = frame.vendor.id[2] << 16 | frame.vendor.id[1] << 8 |
> +                   frame.vendor.id[0];
> +
> +       printf("- vendor Id: 0x%06x (%s)\n", vendor_id,
> +              vendor_id_to_string(vendor_id));
> +
> +       if (vendor_id == VENDOR_ID_HDMI)
> +               dump_vendor_hdmi(&frame);
> +
>         if (!infoframe_valid_checksum(&frame))
>                 printf("Invalid InfoFrame checksum!\n");
>  }
> --
> 1.7.7.5
>
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-- 
Rodrigo Vivi
Blog: http://blog.vivi.eng.br