APPLIED [OEM-5.10] Re: [SRU] [H/OEM-5.10] [PATCH 0/1] Fix ICL PCH no picture after S3

[Timo Aaltonen]

On 2.6.2021 15.44, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1930582
> 
> [Impact]
> Blank DP display after S3 on Intel GFX in ICL PCH desktop.
> 
> [Fix]
> Use proper IRQ setup so the system in question can detect HPD after S3.
> 
> [Test]
> Suspend and resume the system. No picture on DP display.
> With the patch applied, DP display works as expected.
> 
> [Where problems could occur]
> It changes how the Intel GFX setup its HPD IRQ, so hotplug detection
> will be affected. This change is limited to ICL PCH.
> 
> This is the second patch of "drm/i915/gen9bc: Handle TGP PCH during
> suspend/resume", but somehow it was omitted.
> 
> Lyude Paul (1):
>    drm/i915/icp+: Use icp_hpd_irq_setup() instead of spt_hpd_irq_setup()
> 
>   drivers/gpu/drm/i915/i915_irq.c | 2 ++
>   1 file changed, 2 insertions(+)
> 


-- 
t