[Intel-gfx] [PATCH] drm/i915/bdw: make sure south port interrupts are enabled properly v2

[Paulo Zanoni]

2014/1/10 Jesse Barnes <jbarnes at virtuousgeek.org>:
> We were apparently relying on the defaults on BDW, which resulted in no
> hotplug or AUX interrupts.  So be sure to call the ibx_irq_preinstall to
> enable all interrupts.
>
> v2: use preinstall instead of redundant SDIER write
>
> References: https://bugs.freedesktop.org/show_bug.cgi?id=72834
> References: https://bugs.freedesktop.org/show_bug.cgi?id=72833
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>

And this should probably go to Kernel 3.13 too, right?

Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

> ---
>  drivers/gpu/drm/i915/i915_irq.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 261254a..69b0b71 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -2714,6 +2714,8 @@ static void gen8_irq_preinstall(struct drm_device *dev)
>  #undef GEN8_IRQ_INIT_NDX
>
>         POSTING_READ(GEN8_PCU_IIR);
> +
> +       ibx_irq_preinstall(dev);
>  }
>
>  static void ibx_hpd_irq_setup(struct drm_device *dev)
> --
> 1.8.3.2
>
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-- 
Paulo Zanoni