APPLIED [OEM-5.10] Re: [PATCH 0/1][SRU][F/G/U/5.10-OEM] UBUNTU: SAUCE: Fix no screen show on display after S3 on CML-R

[Timo Aaltonen]

On 29.1.2021 9.18, Koba Ko wrote:
> BugLink: https://bugs.launchpad.net/bugs/1913682
> 
> [Impact]
> On CML-R, after S3, No screen show on all three connector(3*DP).
> 
> [Fix]
> The patch is got from https://patchwork.freedesktop.org/patch/416162/.
> For Legacy S3 suspend/resume GEN9 BC needs to enable and setup TGP PCH.
> 
> [Test Case]
> 1. Connected the monitor on one of 3*DP on CML-R.
> 2. Suspend&resume the machine.
> 3. Check the monitor can output something.
> 
> [Where problems could occur]
> Just Enable the hpd detection in IRQ installer and during suspend&resume.
> 
> Tejas Upadhyay (1):
>    UBUNTU: SAUCE: drm/i915/gen9bc: Handle TGP PCH during suspend/resume
> 
>   drivers/gpu/drm/i915/i915_irq.c | 48 ++++++++++++++++++++++-----------
>   1 file changed, 33 insertions(+), 15 deletions(-)
> 

while waiting for v2 upstream we need this in oem-5.10, so applied there


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