[ARM] 3605/1: AT91RM9200 Power Management

Patch from Andrew Victor

This patch adds the core Power Management support for the AT91RM9200
processor.  It will support suspend-to-RAM and standby modes.

The suspend-to-RAM functionality is not 100% complete.  The code that
needs to be execute from the internal SRAM to restore the system is
outstanding.  For now we just fall through to Standby mode.

The AT91-specific at91_suspend_entering_slow_clock() function will
eventually be replaced by clk_must_disable() once that functionality is
added to mainline clock API.

Patch from David Brownell.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91rm9200/gpio.h b/include/asm-arm/arch-at91rm9200/gpio.h
index 6176ab2dc417..dbde1baaf251 100644
--- a/include/asm-arm/arch-at91rm9200/gpio.h
+++ b/include/asm-arm/arch-at91rm9200/gpio.h
@@ -13,6 +13,8 @@
 #ifndef __ASM_ARCH_AT91RM9200_GPIO_H
 #define __ASM_ARCH_AT91RM9200_GPIO_H
 
+#include <asm/irq.h>
+
 #define PIN_BASE                NR_AIC_IRQS
 
 #define PQFP_GPIO_BANKS         3       /* PQFP package has 3 banks */
@@ -188,6 +190,9 @@ extern int at91_set_multi_drive(unsigned pin, int is_on);
 /* callable at any time */
 extern int at91_set_gpio_value(unsigned pin, int value);
 extern int at91_get_gpio_value(unsigned pin);
+
+extern void at91_gpio_suspend(void);
+extern void at91_gpio_resume(void);
 #endif
 
 #endif