On Wed, Aug 28, 2013 at 01:40:56PM +0300, Mikko Perttunen wrote:
> Use EDID data to determine whether the display supports HDMI or just DVI.
> This used to be hardcoded to be HDMI, which broke support for DVI displays
> that couldn't understand the interspersed audio/other data.
>
> If the EDID data isn't available, default to DVI, which should be a safer
> choice.
>
> Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx>
> ---
> drivers/gpu/host1x/drm/hdmi.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/host1x/drm/hdmi.c b/drivers/gpu/host1x/drm/hdmi.c
> index d81fac8..140339b 100644
> --- a/drivers/gpu/host1x/drm/hdmi.c
> +++ b/drivers/gpu/host1x/drm/hdmi.c
> @@ -702,6 +702,14 @@ static int tegra_output_hdmi_enable(struct tegra_output *output)
> unsigned long value;
> int retries = 1000;
> int err;
> + struct drm_property_blob *edid_blob = output->connector.edid_blob_ptr;
> +
> + if (edid_blob && edid_blob->data &&
> + drm_detect_hdmi_monitor((struct edid *)edid_blob->data)) {
> + hdmi->dvi = false;
> + } else {
> + hdmi->dvi = true;
> + }
>
> pclk = mode->clock * 1000;
> h_sync_width = mode->hsync_end - mode->hsync_start;
Odd, now that I see that code I remember that there was a similar patch
a few months back, but it was never applied for some reason:
http://lists.freedesktop.org/archives/dri-devel/2013-January/033509.html
That was already reviewed by me and Jon Mayo, so I'll go ahead and apply
that one instead.
Thierry
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