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authorDaniel Lezcano <daniel.lezcano@linaro.org>2013-09-22 20:29:57 (GMT)
committerDaniel Lezcano <daniel.lezcano@linaro.org>2013-10-16 21:46:13 (GMT)
commit5ad945ea58f6cab7490dc149974ccb6514cc569a (patch)
tree806f516647e1e0676eb9b63e35e4e35e8fc93cde /arch/arm/mach-at91/at91sam9rl.c
parentac9f1cc2ce1a178696763444f2a2f8a0ec661772 (diff)
downloadlinux-5ad945ea58f6cab7490dc149974ccb6514cc569a.tar.xz
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/at91sam9rl.c')
-rw-r--r--arch/arm/mach-at91/at91sam9rl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index d4ec0d9..c7986e4 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -27,6 +27,7 @@
#include "generic.h"
#include "clock.h"
#include "sam9_smc.h"
+#include "pm.h"
/* --------------------------------------------------------------------
* Clocks
@@ -296,6 +297,8 @@ static void __init at91sam9rl_initialize(void)
/* Register GPIO subsystem */
at91_gpio_init(at91sam9rl_gpio, 4);
+
+ at91_pm_set_standby(at91sam9_standby);
}
/* --------------------------------------------------------------------