linux-kernel - Re: [PATCH v2 0/2] drm/rockchip: Optimization vop dpms control

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Date:	Sat, 24 Jan 2015 16:14:54 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	dri-devel@...ts.freedesktop.org
Cc:	Mark Yao <mark.yao@...k-chips.com>,
	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Daniel Kurtz <djkurtz@...omium.org>,
	linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v2 0/2] drm/rockchip: Optimization vop dpms control

Am Donnerstag, 22. Januar 2015, 18:29:55 schrieb Mark Yao:
> drm dpms have many power modes, ON,OFF,SUSPEND,STANDBY, etc.
> but vop only have enable/disable mode, maybe case such bug:
>  --> DRM_DPMS_ON: power on vop
>  --> DRM_DPMS_SUSPEND: power off vop
>  --> DRM_DPMS_OFF: already power off at SUSPEND, crash
> so use a bool val is more suitable.
> 
> another problem at vop_crtc_dpms:
>   vop_enable()->drm_vblank_on, drm_vblank_on may call vop
> enable vblank. if it happen, vblank enable would failed,
> then cause irq status error. because is_enabled value is set
> after drm_vblank_on.

This series, on a rk3288-firefly board with a sda7123 vga connector
Tested-by: Heiko Stuebner <heiko@...ech.de>


Heiko
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