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authoreric miao <eric.miao@marvell.com>2008-03-11 04:46:28 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-04-19 14:29:05 +0400
commitc0a596d6a138ea281bed4ff3018c07c45dd245a2 (patch)
treeab3c25663433bf8c3f16026d969f9722d4ecff92 /arch/arm/mach-pxa/pxa27x.c
parent9b02b2df0099c083ea40ba8c7068e3dcbe381302 (diff)
downloadlinux-c0a596d6a138ea281bed4ff3018c07c45dd245a2.tar.xz
[ARM] pxa: allow dynamic enable/disable of GPIO wakeup for pxa{25x,27x}
Changes include: 1. rename MFP_LPM_WAKEUP_ENABLE into MFP_LPM_CAN_WAKEUP to indicate the board capability of this pin to wakeup the system 2. add gpio_set_wake() and keypad_set_wake() to allow dynamically enable/disable wakeup from GPIOs and keypad GPIO * these functions are currently kept in mfp-pxa2xx.c due to their dependency to the MFP configuration 3. pxa2xx_mfp_config() only gives early warning if MFP_LPM_CAN_WAKEUP is set on incorrect pins So that the GPIO's wakeup capability is now decided by the following: a) processor's capability: (only those GPIOs which have dedicated bits within PWER/PRER/PFER can wakeup the system), this is initialized by pxa{25x,27x}_init_mfp() b) board design decides: - whether the pin is designed to wakeup the system (some of the GPIOs are configured as other functions, which is not intended to be a wakeup source), by OR'ing the pin config with MFP_LPM_CAN_WAKEUP - which edge the pin is designed to wakeup the system, this may depends on external peripherals/connections, which is totally board specific; this is indicated by MFP_LPM_EDGE_* c) the corresponding device's (most likely the gpio_keys.c) wakeup attribute: Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/pxa27x.c')
-rw-r--r--arch/arm/mach-pxa/pxa27x.c31
1 files changed, 5 insertions, 26 deletions
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 87ade40865f1..b230af22ae05 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -23,6 +23,7 @@
#include <asm/arch/irqs.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
+#include <asm/arch/mfp-pxa27x.h>
#include <asm/arch/ohci.h>
#include <asm/arch/pm.h>
#include <asm/arch/dma.h>
@@ -286,37 +287,16 @@ static inline void pxa27x_init_pm(void) {}
/* PXA27x: Various gpios can issue wakeup events. This logic only
* handles the simple cases, not the WEMUX2 and WEMUX3 options
*/
-#define PXA27x_GPIO_NOWAKE_MASK \
- ((1 << 8) | (1 << 7) | (1 << 6) | (1 << 5) | (1 << 2))
-#define WAKEMASK(gpio) \
- (((gpio) <= 15) \
- ? ((1 << (gpio)) & ~PXA27x_GPIO_NOWAKE_MASK) \
- : ((gpio == 35) ? (1 << 24) : 0))
-
static int pxa27x_set_wake(unsigned int irq, unsigned int on)
{
int gpio = IRQ_TO_GPIO(irq);
uint32_t mask;
- if ((gpio >= 0 && gpio <= 15) || (gpio == 35)) {
- if (WAKEMASK(gpio) == 0)
- return -EINVAL;
-
- mask = WAKEMASK(gpio);
-
- if (on) {
- if (GRER(gpio) | GPIO_bit(gpio))
- PRER |= mask;
- else
- PRER &= ~mask;
+ if (gpio >= 0 && gpio < 128)
+ return gpio_set_wake(gpio, on);
- if (GFER(gpio) | GPIO_bit(gpio))
- PFER |= mask;
- else
- PFER &= ~mask;
- }
- goto set_pwer;
- }
+ if (irq == IRQ_KEYPAD)
+ return keypad_set_wake(on);
switch (irq) {
case IRQ_RTCAlrm:
@@ -329,7 +309,6 @@ static int pxa27x_set_wake(unsigned int irq, unsigned int on)
return -EINVAL;
}
-set_pwer:
if (on)
PWER |= mask;
else