[PATCH 25/25] OMAP3: CPUidle: Make use of CPU PM notifiers
From: Santosh Shilimkar <hidden>
Date: 2011-09-04 13:54:26
Also in:
linux-omap
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
These notifiers can be used to isolate non-cpu specific PM code from CPU idle code. To start with, we can already leverage VFP handlers using notifier chain for low power idle code. So use them. Signed-off-by: Santosh Shilimkar <redacted> Cc: Kevin Hilman <redacted> --- arch/arm/mach-omap2/cpuidle34xx.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index 4bf6e6e..1112519 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c@@ -24,6 +24,7 @@ #include <linux/sched.h> #include <linux/cpuidle.h> +#include <linux/cpu_pm.h> #include <plat/prcm.h> #include <plat/irqs.h>
@@ -118,9 +119,15 @@ static int omap3_enter_idle(struct cpuidle_device *dev, pwrdm_for_each_clkdm(core_pd, _cpuidle_deny_idle); } + if (mpu_state == PWRDM_POWER_OFF) + cpu_pm_enter(); + /* Execute ARM wfi */ omap_sram_idle(); + if (pwrdm_read_prev_pwrst(mpu_pd) == PWRDM_POWER_OFF) + cpu_pm_exit(); + /* Re-allow idle for C1 */ if (state == &dev->states[0]) { pwrdm_for_each_clkdm(mpu_pd, _cpuidle_allow_idle);
--
1.7.4.1