diff options
| author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2013-09-22 22:29:57 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2013-10-16 23:46:13 +0200 |
| commit | 5ad945ea58f6cab7490dc149974ccb6514cc569a (patch) | |
| tree | 806f516647e1e0676eb9b63e35e4e35e8fc93cde /arch/arm/mach-at91/pm.h | |
| parent | ac9f1cc2ce1a178696763444f2a2f8a0ec661772 (diff) | |
ARM: at91: cpuidle: Convert to platform driver
Using the platform driver model is a good way to separate the cpuidle specific
code from the low level pm code. It allows to remove the dependency between
these two components.
The platform_device is located in the pm code and a 'set' function has been
added to set the standby function from the AT91_SOC_START initialization
function. Each SoC with a cpuidle driver will set the standby function in the
platform_data field at init time. Then pm code will register the cpuidle
platform device.
The cpuidle driver will register the platform_driver and use the device's
platform_data as a standby callback in the idle path.
The at91_pm_enter function contains a { if then else } based on cpu_is_xx
similar to what was in cpuidle. This is considered dangerous when adding a new
SoC. Like the cpuidle driver, a standby ops is defined and assigned when the
SoC init function specifies what is its standby function and reused in the
at91_pm_enter's 'case' block.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/pm.h')
| -rw-r--r-- | arch/arm/mach-at91/pm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h index 2f5908f0b8c..76dd1a749eb 100644 --- a/arch/arm/mach-at91/pm.h +++ b/arch/arm/mach-at91/pm.h @@ -11,9 +11,13 @@ #ifndef __ARCH_ARM_MACH_AT91_PM #define __ARCH_ARM_MACH_AT91_PM +#include <asm/proc-fns.h> + #include <mach/at91_ramc.h> #include <mach/at91rm9200_sdramc.h> +extern void at91_pm_set_standby(void (*at91_standby)(void)); + /* * The AT91RM9200 goes into self-refresh mode with this command, and will * terminate self-refresh automatically on the next SDRAM access. |