6 Jan
2012
6 Jan
'12
3:10 a.m.
On Thu, 5 Jan 2012 14:16:23 -0200, przanoni@gmail.com wrote:
From: Paulo Zanoni paulo.r.zanoni@intel.com
This ioctl is used to signal the drivers that the screen is rotated, not to make the drivers rotate the screen.
- add a driver-specific "rotation_set" function
- implement Intel's rotation_set by setting the right values to the PIPECONF registers.
The idea is that when user-space does rotation, it can call this ioctl to inform the Kernel that we have a rotation. This feature is needed by the KVMr feature of VPro.
So am I following this right, that these register bits are used to communicate from one piece of software to another piece of software, across the virtualization boundary?