diff options
| author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2012-02-28 21:46:08 (GMT) |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-03-06 17:46:56 (GMT) |
| commit | 9ab492e12d588af7b05892c3744e8bdc2eace6d0 (patch) | |
| tree | 7b79c2d3c840239f5b0a4e717227c8adf51c69cc | |
| parent | 9f60d33e1811e0aa696a3152050d6e3e4c3195aa (diff) | |
| download | linux-fsl-qoriq-9ab492e12d588af7b05892c3744e8bdc2eace6d0.tar.xz | |
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: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 20 | ||||
| -rw-r--r-- | include/linux/mfd/db8500-prcmu.h | 1 | ||||
| -rw-r--r-- | include/linux/mfd/dbx500-prcmu.h | 8 |
3 files changed, 29 insertions, 0 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 97341aa..4e27db8 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -884,6 +884,26 @@ bool db8500_prcmu_gic_pending_irq(void) } /* + * 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. */ diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h index a591585..926bdb3 100644 --- a/include/linux/mfd/db8500-prcmu.h +++ b/include/linux/mfd/db8500-prcmu.h @@ -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); diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index f8429ca..5c72c07 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -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()) |