Bug 27052

Summary:	[KMS] We should "Recalculate I2C clock on engine clock setting"
Product:	DRI	Reporter:	Rafał Miłecki <zajec5>
Component:	DRM/Radeon	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED NOTABUG	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

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.

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