[Intel-gfx] [PATCH 1/2] drm/edid: adjust double-clocked cea modes

[Adam Jackson]

On Sun, 2012-05-13 at 00:07 +0200, Daniel Vetter wrote:

> The problem left is that the CEA spec specifies these modes with
> timings as they get transmitted, but because the double-clocking is
> just to make the HDMI phy happy, the TV actually drops every 2nd
> pixel. So e.g. a 1440x576 mode in our CEA mode list is actually a
> 720x576 mode.

Well, okay, but...

>  	/* 9 - 1440x240 at 60Hz */
> -	{ DRM_MODE("1440x240", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
> +	{ DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 27000, 1440, 1478,
>  		   1602, 1716, 0, 240, 244, 247, 262, 0,
>  		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
>  			DRM_MODE_FLAG_DBLCLK) },

... right after this are the 2800x480 modes.  Are they really 720, 1440,
or 2880 wide?  Both before and after this change they're 2880 wide, but
the logic of this change makes me believe they should not be.

- ajax
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