From: Jonathan Austin <Jonathan.Austin@arm.com>
Date: Fri, 21 Sep 2012 17:51:44 +0000 (+0100)
Subject: ARM: 7538/1: delay: add registration mechanism for delay timer sources
X-Git-Tag: omap-for-v3.7-rc1/fixes-hwmod-clock-signed-v3~1^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56942fec06efa0e17df0f4c3b438332c923b9014;p=pandora-kernel.git

ARM: 7538/1: delay: add registration mechanism for delay timer sources

The current timer-based delay loop relies on the architected timer to
initiate the switch away from the polling-based implementation. This is
unfortunate for platforms without the architected timers but with a
suitable delay source (that is, constant frequency, always powered-up
and ticking as long as the CPUs are online).

This patch introduces a registration mechanism for the delay timer
(which provides an unconditional read_current_timer implementation) and
updates the architected timer code to use the new interface.

Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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