Commit 9ab492e1 authored by Daniel Lezcano's avatar Daniel Lezcano Committed by Samuel Ortiz
Browse files

mfd : Check if the db8500 prcmu has pending irq 



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

Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 9f60d33e

drivers/mfd/db8500-prcmu.c

+20 −0
Original line number Diff line number Diff line
@@ -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.

include/linux/mfd/db8500-prcmu.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/mfd/dbx500-prcmu.h

+8 −0
Original line number Diff line number Diff line
@@ -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())