Re: [PATCH] drm/rockchip: vop2: fix suspend/resume

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Apr 17, 2023 at 12:46:05PM +0200, Heiko Stübner wrote:
> Hi Sascha,
> 
> Am Montag, 17. April 2023, 11:42:15 CEST schrieb Sascha Hauer:
> > During a suspend/resume cycle the VO power domain will be disabled and
> > the VOP2 registers will reset to their default values. After that the
> > cached register values will be out of sync and the read/modify/write
> > operations we do on the window registers will result in bogus values
> > written. Fix this by marking the regcache as dirty each time we disable
> > the VOP2 and call regcache_sync() each time we enable it again. With
> > this the VOP2 will show a picture after a suspend/resume cycle whereas
> > without this the screen stays dark.
> > 
> > Fixes: 604be85547ce4 ("drm/rockchip: Add VOP2 driver")
> > Cc: stable@xxxxxxxxxxxxxxx
> > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> 
> somehow we overlapped with this v2 and me applying the original one [0]
> to drm-misc. With drm-misc being a shared tree there is also no way back.
> 
> So if this v2 is better suited, could do a follow-up patch instead - on
> top of your original one?

Alright, just did that. You should find it in your inbox.

Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |



[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux