Re: [PATCH] efifb: Ensure graphics device for efifb stays at PCI D0

2021-02-22 Thread Thomas Zimmermann
Hi Am 22.02.21 um 08:08 schrieb Kai-Heng Feng: On Mon, Feb 1, 2021 at 11:21 PM Alex Deucher wrote: On Sat, Jan 30, 2021 at 6:27 AM Kai-Heng Feng wrote: We are seeing root ports on some desktop boards support D3cold for discrete graphics card. So when efifb is in use while graphics device i

Re: [PATCH] efifb: Ensure graphics device for efifb stays at PCI D0

2021-02-21 Thread Kai-Heng Feng
On Mon, Feb 1, 2021 at 11:21 PM Alex Deucher wrote: > > On Sat, Jan 30, 2021 at 6:27 AM Kai-Heng Feng > wrote: > > > > We are seeing root ports on some desktop boards support D3cold for > > discrete graphics card. So when efifb is in use while graphics device > > isn't bound to a driver, PCI and

Re: [PATCH] efifb: Ensure graphics device for efifb stays at PCI D0

2021-02-01 Thread Alex Deucher
On Sat, Jan 30, 2021 at 6:27 AM Kai-Heng Feng wrote: > > We are seeing root ports on some desktop boards support D3cold for > discrete graphics card. So when efifb is in use while graphics device > isn't bound to a driver, PCI and ACPI will put the graphics to D3cold > when runtime suspend kicks i