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eda63ffb90
At the moment, these values are wiped out anyway by the rps enable/disable. That will be changed in the next patch though. v2: Add post install setup to address issue found by Damien in the next patch. replaced WARN_ON(dev_priv->rps.pm_iir != 0); with rps.pm_iir = 0; With the v2 of this patch and the deferred pm enabling (which changed since the original patches) we're now able to get PM interrupts before we've brought up enabled rps. At this point in boot, we don't want to do anything about it, so we simply ignore it. Since writing the original assertion, the code has changed quite a bit, and I believe removing this assertion is perfectly safe. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Damien Lespiau <damien.lespiau@intel.com> [danvet: I don't agree with the justification to drop the WARN and added a FIXME to that effect.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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* For the very latest on DRI development, please see: *
* http://dri.freedesktop.org/ *
************************************************************
The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).
The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:
1. The DRM provides synchronized access to the graphics hardware via
the use of an optimized two-tiered lock.
2. The DRM enforces the DRI security policy for access to the graphics
hardware by only allowing authenticated X11 clients access to
restricted regions of memory.
3. The DRM provides a generic DMA engine, complete with multiple
queues and the ability to detect the need for an OpenGL context
switch.
4. The DRM is extensible via the use of small device-specific modules
that rely extensively on the API exported by the DRM module.
Documentation on the DRI is available from:
http://dri.freedesktop.org/wiki/Documentation
http://sourceforge.net/project/showfiles.php?group_id=387
http://dri.sourceforge.net/doc/
For specific information about kernel-level support, see:
The Direct Rendering Manager, Kernel Support for the Direct Rendering
Infrastructure
http://dri.sourceforge.net/doc/drm_low_level.html
Hardware Locking for the Direct Rendering Infrastructure
http://dri.sourceforge.net/doc/hardware_locking_low_level.html
A Security Analysis of the Direct Rendering Infrastructure
http://dri.sourceforge.net/doc/security_low_level.html