Bug 27052 - [KMS] We should "Recalculate I2C clock on engine clock setting"
Summary: [KMS] We should "Recalculate I2C clock on engine clock setting"
Status: RESOLVED NOTABUG
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-03-12 12:52 UTC by Rafał Miłecki
Modified: 2010-03-12 13:12 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments

Description Rafał Miłecki 2010-03-12 12:52:12 UTC 
http://cgit.freedesktop.org/xorg/driver/xf86-video-radeonhd/commit/?id=42a81085042606cd812732a13b66527d37fc625c

pm: Recalculate I2C clock on engine clock setting.
On pre-R6xx the DDC clock is derived from the engine clock, thus changing the
engine clock implies that the DDC clock is to be updated as well.

Same should be done for radeon KMS.
Comment 1 Alex Deucher 2010-03-12 13:08:13 UTC 
It's already done for kms.  If we use the hw engines we take the pm mutex and call get_engine_clock() to get the current sclk.
Comment 2 Rafał Miłecki 2010-03-12 13:12:55 UTC 
Oh, OK, thanks.

Browsing ooold e-mails I noticed last time we didn't implement that. I thought it was forgotten.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.