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mfd : Check if the db8500 prcmu has pending irq

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This patch allows to check if there are some pending irqs
on the prcmu.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Daniel Lezcano 2012-02-28 22:46:08 +01:00 committed by Samuel Ortiz
parent 9f60d33e18
commit 9ab492e12d
3 changed files with 29 additions and 0 deletions
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20
drivers/mfd/db8500-prcmu.c
View File

@ -883,6 +883,26 @@ bool db8500_prcmu_gic_pending_irq(void)
return false;
}
/*
* This function checks if there are pending interrupt on the
* prcmu which has been delegated to monitor the irqs with the
* db8500_prcmu_copy_gic_settings function.
*/
bool db8500_prcmu_pending_irq(void)
{
u32 it, im;
int i;
for (i = 0; i < PRCMU_GIC_NUMBER_REGS - 1; i++) {
it = readl(PRCM_ARMITVAL31TO0 + i * 4);
im = readl(PRCM_ARMITMSK31TO0 + i * 4);
if (it & im)
return true; /* There is a pending interrupt */
}
return false;
}
/*
* This function copies the gic SPI settings to the prcmu in order to
* monitor them and abort/finish the retention/off sequence or state.

1
include/linux/mfd/db8500-prcmu.h
View File

@ -584,6 +584,7 @@ int db8500_prcmu_gic_decouple(void);
int db8500_prcmu_gic_recouple(void);
int db8500_prcmu_copy_gic_settings(void);
bool db8500_prcmu_gic_pending_irq(void);
bool db8500_prcmu_pending_irq(void);
void db8500_prcmu_enable_wakeups(u32 wakeups);
int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state);
int db8500_prcmu_request_clock(u8 clock, bool enable);

8
include/linux/mfd/dbx500-prcmu.h
View File

@ -313,6 +313,14 @@ static inline int prcmu_copy_gic_settings(void)
return db8500_prcmu_copy_gic_settings();
}
static inline bool prcmu_pending_irq(void)
{
if (cpu_is_u5500())
return -EINVAL;
else
return db8500_prcmu_pending_irq();
}
static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
{
if (cpu_is_u5500())