APPLIED [OEM-5.10] Re: [PATCH 0/3][SRU][U/OEM-5.10] Update - Fix no screen show on display after S3 on CML-R

[Timo Aaltonen]

On 7.4.2021 5.13, Koba Ko wrote:
> BugLink: https://bugs.launchpad.net/bugs/1922768
> 
> [Impact]
> On CML-R, after S3, No screen show on all three connector(3*DP).
> 
> [Fix]
> Here's v4 patch and has been landed on drm-tip,
> https://patchwork.freedesktop.org/patch/msgid/20210217180016.1937401-1-lyude@redhat.com,
> so revert the old and resend the v4 patch.
> 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.
> 
> [OEM-5.10]
> 
> Koba Ko (1):
>    Revert "UBUNTU: SAUCE: drm/i915/gen9bc: Handle TGP PCH during
>      suspend/resume"
> 
> Tejas Upadhyay (1):
>    drm/i915/gen9bc: Handle TGP PCH during suspend/resume
> 
>   drivers/gpu/drm/i915/i915_irq.c | 69 ++++++++++++---------------------
>   1 file changed, 24 insertions(+), 45 deletions(-)
> 
> [Unstable]
>   Tejas Upadhyay (1):
>    drm/i915/gen9bc: Handle TGP PCH during suspend/resume
>                                                                                   
>   drivers/gpu/drm/i915/i915_irq.c | 49 +++++++++++++++++++++------------
>   1 file changed, 32 insertions(+), 17 deletions(-)
> 


-- 
Timo Aaltonen
Senior Engineer, Kernel Enablement
Canonical Ltd.