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authorRussell King <rmk+kernel@arm.linux.org.uk>2013-07-09 10:27:12 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-12-12 22:59:15 +0000
commit7dde0c032869ea92206398ad5c538d01931e3947 (patch)
treecc85223cd5c247a1ef6cdc41aaf55d25a4293508 /drivers/rtc/rtc-twl.c
parent374b105797c3d4f29c685f3be535c35f5689b30e (diff)
ARM: sa11x0: assabet: better reset handling
The codec reset pin is connected to several peripherals. When the reset is released, unfortunately the ADV7171 powers itself up rather than remaining in power-down mode. As we don't have a driver for this device, we end up needlessly consuming an additional 330mW. Not only that but we should have a way to arbitrate the reset signal. This patch provides that facility: we program the ADV7171 to sleep mode whenever the reset is released, and we release the reset when any one of the three peripherals requests the reset to be released. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/rtc/rtc-twl.c')
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