Re: [PATCH] drm: tegra: check HDMI sink capability

[Mark Zhang <nvmarkzhang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Thanks. Honestly don't know drm has this function...

Mark
On 12/18/2012 01:59 AM, Lucas Stach wrote:
> Check if sink is HDMI capable when enabling an output. This disables
> HDMI audio/infoframes if we are talking to a plain DVI sink. All things
> except this check are already in place.
> 
> Signed-off-by: Lucas Stach <dev-8ppwABl0HbeELgA04lAiVw@public.gmane.org>
> ---
>  drivers/gpu/drm/tegra/hdmi.c | 3 +++
>  1 Datei geändert, 3 Zeilen hinzugefügt(+)
> 
> diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
> index ab40164..32ea7d4 100644
> --- a/drivers/gpu/drm/tegra/hdmi.c
> +++ b/drivers/gpu/drm/tegra/hdmi.c
> @@ -673,6 +673,9 @@ static int tegra_output_hdmi_enable(struct tegra_output *output)
>  	usleep_range(1000, 2000);
>  	tegra_periph_reset_deassert(hdmi->clk);
>  
> +	/* if the connected sink is not HDMI capable fall back to plain DVI */
> +	hdmi->dvi = !drm_detect_hdmi_monitor((struct edid *)output->edid);
> +
>  	tegra_dc_writel(dc, VSYNC_H_POSITION(1),
>  			DC_DISP_DISP_TIMING_OPTIONS);
>  	tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE888,
>