mfd: Introduce irq_to_pcap()

Export an irq_to_pcap function to get pcap irq number, for the keypad driver.

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index c1de4af..de7e637 100644 (file)
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -107,10 +107,11 @@ int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value)
 EXPORT_SYMBOL_GPL(ezx_pcap_read);
 
 /* IRQ */
-static inline unsigned int irq2pcap(struct pcap_chip *pcap, int irq)
+int irq_to_pcap(struct pcap_chip *pcap, int irq)
 {
-       return 1 << (irq - pcap->irq_base);
+       return irq - pcap->irq_base;
 }
+EXPORT_SYMBOL_GPL(irq_to_pcap);
 
 int pcap_to_irq(struct pcap_chip *pcap, int irq)
 {
@@ -122,7 +123,7 @@ static void pcap_mask_irq(unsigned int irq)
 {
        struct pcap_chip *pcap = get_irq_chip_data(irq);
 
-       pcap->msr |= irq2pcap(pcap, irq);
+       pcap->msr |= 1 << irq_to_pcap(pcap, irq);
        queue_work(pcap->workqueue, &pcap->msr_work);
 }
 
@@ -130,7 +131,7 @@ static void pcap_unmask_irq(unsigned int irq)
 {
        struct pcap_chip *pcap = get_irq_chip_data(irq);
 
-       pcap->msr &= ~irq2pcap(pcap, irq);
+       pcap->msr &= ~(1 << irq_to_pcap(pcap, irq));
        queue_work(pcap->workqueue, &pcap->msr_work);
 }
 

diff --git a/include/linux/mfd/ezx-pcap.h b/include/linux/mfd/ezx-pcap.h
index c12c3c0..6296b49 100644 (file)
--- a/include/linux/mfd/ezx-pcap.h
+++ b/include/linux/mfd/ezx-pcap.h
@@ -26,6 +26,7 @@ struct pcap_chip;
 int ezx_pcap_write(struct pcap_chip *, u8, u32);
 int ezx_pcap_read(struct pcap_chip *, u8, u32 *);
 int pcap_to_irq(struct pcap_chip *, int);
+int irq_to_pcap(struct pcap_chip *, int);
 int pcap_adc_async(struct pcap_chip *, u8, u32, u8[], void *, void *);
 int pcap_adc_sync(struct pcap_chip *, u8, u32, u8[], u16[]);