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author | Tony Lindgren <tony@atomide.com> | 2013-02-11 09:20:50 -0800 |
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committer | Tony Lindgren <tony@atomide.com> | 2013-02-11 09:20:50 -0800 |
commit | 58a656b77a3d352631d058df0ac2a1da92e3a0f0 (patch) | |
tree | b01c68ffcf0013302dd75a6c9728eba80889f307 /arch/arm/mach-omap2/pm24xx.c | |
parent | 8d61d7f94522a0c023ed79d4f690f2bfc8a41d96 (diff) | |
parent | 814a18a5d026464f56b3616704b985f9942b29a6 (diff) | |
download | linux-58a656b77a3d352631d058df0ac2a1da92e3a0f0.tar.bz2 |
Merge tag 'omap-devel-b-for-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.9/pm-wfi-take2
On OMAP2+ devices, standardize and clean up WFI entry and WFI blocking.
Basic test logs are available here:
http://www.pwsan.com/omap/testlogs/wfi_devel_a_3.9/20130208085027/
Conflicts:
arch/arm/mach-omap2/pm24xx.c
Diffstat (limited to 'arch/arm/mach-omap2/pm24xx.c')
-rw-r--r-- | arch/arm/mach-omap2/pm24xx.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index b2a4df623545..b59d93908341 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -54,7 +54,6 @@ #include "powerdomain.h" #include "clockdomain.h" -static void (*omap2_sram_idle)(void); static void (*omap2_sram_suspend)(u32 dllctrl, void __iomem *sdrc_dlla_ctrl, void __iomem *sdrc_power); @@ -163,6 +162,8 @@ static int omap2_allow_mpu_retention(void) static void omap2_enter_mpu_retention(void) { + const int zero = 0; + /* The peripherals seem not to be able to wake up the MPU when * it is in retention mode. */ if (omap2_allow_mpu_retention()) { @@ -179,7 +180,8 @@ static void omap2_enter_mpu_retention(void) pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); } - omap2_sram_idle(); + /* WFI */ + asm("mcr p15, 0, %0, c7, c0, 4" : : "r" (zero) : "memory", "cc"); pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); } @@ -333,11 +335,9 @@ int __init omap2_pm_init(void) /* * We copy the assembler sleep/wakeup routines to SRAM. * These routines need to be in SRAM as that's the only - * memory the MPU can see when it wakes up. + * memory the MPU can see when it wakes up after the entire + * chip enters idle. */ - omap2_sram_idle = omap_sram_push(omap24xx_idle_loop_suspend, - omap24xx_idle_loop_suspend_sz); - omap2_sram_suspend = omap_sram_push(omap24xx_cpu_suspend, omap24xx_cpu_suspend_sz); |