[U-Boot] [PATCH 1/5] edid: add function to convert edid to fb_videomode

[Stefano Babic]

CC to Anatolij as video custodian

On 08/01/2014 08:24, Christian Gmeiner wrote:
> There may be some custom boards in the field which have
> an seperate eeprom chip to store edid informations in it.
> To make use of those edid information in the board code
> this patch add a function to convert edid to fb_videomode.
> 
> Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
> ---
>  common/edid.c  |   29 +++++++++++++++++++++++++++++
>  include/edid.h |    3 +++
>  2 files changed, 32 insertions(+)
> 
> diff --git a/common/edid.c b/common/edid.c
> index e66108f..8841c25 100644
> --- a/common/edid.c
> +++ b/common/edid.c
> @@ -12,6 +12,7 @@
>  
>  #include <common.h>
>  #include <edid.h>
> +#include <linux/fb.h>
>  #include <linux/ctype.h>
>  #include <linux/string.h>
>  
> @@ -288,3 +289,31 @@ void edid_print_info(struct edid1_info *edid_info)
>  	if (!have_timing)
>  		printf("\tNone\n");
>  }
> +
> +void edid_to_fb_videomode(struct edid1_info *edid, struct fb_videomode *mode)
> +{
> +        struct edid_monitor_descriptor *monitor = &edid->monitor_details.descriptor[0];
> +        unsigned char *bytes = (unsigned char *)monitor;
> +        struct edid_detailed_timing *timing = (struct edid_detailed_timing *)monitor;
> +
> +        uint32_t pixclock = EDID_DETAILED_TIMING_PIXEL_CLOCK(*timing);
> +        uint32_t h_blanking = EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(*timing);
> +        uint32_t h_active = EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(*timing);
> +        uint32_t h_sync_offset = EDID_DETAILED_TIMING_HSYNC_OFFSET(*timing);
> +        uint32_t h_sync_width = EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(*timing);
> +        uint32_t v_blanking = EDID_DETAILED_TIMING_VERTICAL_BLANKING(*timing);
> +        uint32_t v_active = EDID_DETAILED_TIMING_VERTICAL_ACTIVE(*timing);
> +        uint32_t v_sync_offset = EDID_DETAILED_TIMING_VSYNC_OFFSET(*timing);
> +        uint32_t v_sync_width = EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(*timing);
> +
> +        mode->name = "EDID";
> +        mode->pixclock = pixclock;
> +        mode->yres = v_active;
> +        mode->xres = h_active;
> +        mode->left_margin = h_blanking - h_sync_offset - h_sync_width;
> +        mode->right_margin = h_sync_offset;
> +        mode->upper_margin = v_blanking - v_sync_offset - v_sync_width;
> +        mode->lower_margin = v_sync_offset;
> +        mode->hsync_len = h_sync_width;
> +        mode->vsync_len = v_sync_width;
> +}
> diff --git a/include/edid.h b/include/edid.h
> index 480a773..4423062 100644
> --- a/include/edid.h
> +++ b/include/edid.h
> @@ -233,6 +233,9 @@ struct edid1_info {
>   */
>  void edid_print_info(struct edid1_info *edid_info);
>  
> +struct fb_videomode;
> +void edid_to_fb_videomode(struct edid1_info *edid, struct fb_videomode *mode);
> +
>  /**
>   * Check the EDID info.
>   *
> 


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