Praveen Paneri 5654a1623c drm/i915: Fix FBC cfb stride programming for non X-tiled FB
When FBC is enabled for linear, legacy Y-tiled and Yf-tiled
surfaces on gen9, the cfb stride must be programmed by SW as

cfb_stride = ceiling[(at least plane width in pixels)/
		     (32 * compression limit factor)] * 8

v2: Minor fix for a build error
v3: Fixed subject, register name and platform check (Ville)
v4: Added WA details in comment (Paulo)
v5:
 - Read modified reg write to preserve other bit values (Paulo)
 - Store modified stride value in reg_params (Paulo)
 - Keep GLK out of the WA (Paulo)
v6:
 - added additional field in reg_params for gen9_wa_cfb_stride (Paulo)
 - Used appropriate bit mask while writing the register (Paulo)
v7 (from Paulo):
 - Fix coding style and spacing issues.
 - Mask the old values before writing.
 - Bikeshed comments and unnecessary checks.

Signed-off-by: Praveen Paneri <praveen.paneri@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502389833-32621-1-git-send-email-praveen.paneri@intel.com
2017-08-25 21:13:33 -03:00
2005-09-10 10:06:29 -07:00
2017-07-23 16:15:17 -07:00

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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