summaryrefslogtreecommitdiffstats
path: root/drivers/mfd/mc13783-core.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mfd/mc13783-core.c')
-rw-r--r--drivers/mfd/mc13783-core.c73
1 files changed, 54 insertions, 19 deletions
diff --git a/drivers/mfd/mc13783-core.c b/drivers/mfd/mc13783-core.c
index 735c8a4d164..62a847e4c2d 100644
--- a/drivers/mfd/mc13783-core.c
+++ b/drivers/mfd/mc13783-core.c
@@ -225,7 +225,7 @@ int mc13783_reg_rmw(struct mc13783 *mc13783, unsigned int offset,
}
EXPORT_SYMBOL(mc13783_reg_rmw);
-int mc13783_mask(struct mc13783 *mc13783, int irq)
+int mc13783_irq_mask(struct mc13783 *mc13783, int irq)
{
int ret;
unsigned int offmask = irq < 24 ? MC13783_IRQMASK0 : MC13783_IRQMASK1;
@@ -245,9 +245,9 @@ int mc13783_mask(struct mc13783 *mc13783, int irq)
return mc13783_reg_write(mc13783, offmask, mask | irqbit);
}
-EXPORT_SYMBOL(mc13783_mask);
+EXPORT_SYMBOL(mc13783_irq_mask);
-int mc13783_unmask(struct mc13783 *mc13783, int irq)
+int mc13783_irq_unmask(struct mc13783 *mc13783, int irq)
{
int ret;
unsigned int offmask = irq < 24 ? MC13783_IRQMASK0 : MC13783_IRQMASK1;
@@ -267,7 +267,53 @@ int mc13783_unmask(struct mc13783 *mc13783, int irq)
return mc13783_reg_write(mc13783, offmask, mask & ~irqbit);
}
-EXPORT_SYMBOL(mc13783_unmask);
+EXPORT_SYMBOL(mc13783_irq_unmask);
+
+int mc13783_irq_status(struct mc13783 *mc13783, int irq,
+ int *enabled, int *pending)
+{
+ int ret;
+ unsigned int offmask = irq < 24 ? MC13783_IRQMASK0 : MC13783_IRQMASK1;
+ unsigned int offstat = irq < 24 ? MC13783_IRQSTAT0 : MC13783_IRQSTAT1;
+ u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
+
+ if (irq < 0 || irq >= MC13783_NUM_IRQ)
+ return -EINVAL;
+
+ if (enabled) {
+ u32 mask;
+
+ ret = mc13783_reg_read(mc13783, offmask, &mask);
+ if (ret)
+ return ret;
+
+ *enabled = mask & irqbit;
+ }
+
+ if (pending) {
+ u32 stat;
+
+ ret = mc13783_reg_read(mc13783, offstat, &stat);
+ if (ret)
+ return ret;
+
+ *pending = stat & irqbit;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(mc13783_irq_status);
+
+int mc13783_irq_ack(struct mc13783 *mc13783, int irq)
+{
+ unsigned int offstat = irq < 24 ? MC13783_IRQSTAT0 : MC13783_IRQSTAT1;
+ unsigned int val = 1 << (irq < 24 ? irq : irq - 24);
+
+ BUG_ON(irq < 0 || irq >= MC13783_NUM_IRQ);
+
+ return mc13783_reg_write(mc13783, offstat, val);
+}
+EXPORT_SYMBOL(mc13783_irq_ack);
int mc13783_irq_request_nounmask(struct mc13783 *mc13783, int irq,
irq_handler_t handler, const char *name, void *dev)
@@ -297,7 +343,7 @@ int mc13783_irq_request(struct mc13783 *mc13783, int irq,
if (ret)
return ret;
- ret = mc13783_unmask(mc13783, irq);
+ ret = mc13783_irq_unmask(mc13783, irq);
if (ret) {
mc13783->irqhandler[irq] = NULL;
mc13783->irqdata[irq] = NULL;
@@ -317,7 +363,7 @@ int mc13783_irq_free(struct mc13783 *mc13783, int irq, void *dev)
mc13783->irqdata[irq] != dev)
return -EINVAL;
- ret = mc13783_mask(mc13783, irq);
+ ret = mc13783_irq_mask(mc13783, irq);
if (ret)
return ret;
@@ -333,17 +379,6 @@ static inline irqreturn_t mc13783_irqhandler(struct mc13783 *mc13783, int irq)
return mc13783->irqhandler[irq](irq, mc13783->irqdata[irq]);
}
-int mc13783_ackirq(struct mc13783 *mc13783, int irq)
-{
- unsigned int offstat = irq < 24 ? MC13783_IRQSTAT0 : MC13783_IRQSTAT1;
- unsigned int val = 1 << (irq < 24 ? irq : irq - 24);
-
- BUG_ON(irq < 0 || irq >= MC13783_NUM_IRQ);
-
- return mc13783_reg_write(mc13783, offstat, val);
-}
-EXPORT_SYMBOL(mc13783_ackirq);
-
/*
* returns: number of handled irqs or negative error
* locking: holds mc13783->lock
@@ -422,7 +457,7 @@ static irqreturn_t mc13783_handler_adcdone(int irq, void *data)
{
struct mc13783_adcdone_data *adcdone_data = data;
- mc13783_ackirq(adcdone_data->mc13783, irq);
+ mc13783_irq_ack(adcdone_data->mc13783, irq);
complete_all(&adcdone_data->done);
@@ -486,7 +521,7 @@ int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode,
dev_dbg(&mc13783->spidev->dev, "%s: request irq\n", __func__);
mc13783_irq_request(mc13783, MC13783_IRQ_ADCDONE,
mc13783_handler_adcdone, __func__, &adcdone_data);
- mc13783_ackirq(mc13783, MC13783_IRQ_ADCDONE);
+ mc13783_irq_ack(mc13783, MC13783_IRQ_ADCDONE);
mc13783_reg_write(mc13783, MC13783_REG_ADC_0, adc0);
mc13783_reg_write(mc13783, MC13783_REG_ADC_1, adc1);