[PATCH v2 12/18] omap3+: sr: enable/disable SR only on need
From: Nishanth Menon <nm@ti.com>
Date: 2011-03-02 10:55:25
Also in:
linux-arm-kernel
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Since we already know the state of the autocomp enablement, we can see if the requested state is different from the current state and enable/disable SR only on the need basis. Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/mach-omap2/smartreflex.c | 11 +++++++---- 1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index 8cad92d..4fc679e 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c@@ -819,10 +819,13 @@ static int omap_sr_autocomp_store(void *data, u64 val) return -EINVAL; } - if (!val) - sr_stop_vddautocomp(sr_info); - else - sr_start_vddautocomp(sr_info); + /* control enable/disable only if there is a delta in value */ + if (sr_info->autocomp_active ^ val) { + if (!val) + sr_stop_vddautocomp(sr_info); + else + sr_start_vddautocomp(sr_info); + } return 0; }
--
1.7.1