On Thu, 27 Sep 2012 19:13:05 +0530
Vijay Purushothaman <vijay.a.purushothaman at intel.com> wrote:
> Temporary work around to avoid spurious crt hotplug interrupts.
>
> Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman at intel.com>
> Signed-off-by: Gajanan Bhat <gajanan.bhat at intel.com>
> ---
> drivers/gpu/drm/i915/intel_crt.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
> index c42b980..5f30364 100644
> --- a/drivers/gpu/drm/i915/intel_crt.c
> +++ b/drivers/gpu/drm/i915/intel_crt.c
> @@ -308,6 +308,13 @@ static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
> bool ret;
> u32 save_adpa;
>
> + /*
> + * Disable crt detect hotplug for VLV X0. Spurious hot plug
> + * detect calls crashses the X0 system
> + */
> + if (IS_VALLEYVIEW(dev))
> + return false;
> +
> save_adpa = adpa = I915_READ(ADPA);
> DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
>
Not sure about this one; your platform seems to be less stable than
mine when it comes to both VGA port handling and legacy VGA I/O... But
I have no problem with it either, I just know it works ok on at least
some of the SDVs, probably depending on board rework and firmware
status.
Acked-by: Jesse Barnes <jbarnes at virtuousgeek.org>
--
Jesse Barnes, Intel Open Source Technology Center
