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Subject[PATCH 2/4] MFD/PCAP: irq_to_pcap()
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Date
Export an irq_to_pcap function to get pcap irq number, for the keypad driver.

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>

---
drivers/mfd/ezx-pcap.c | 9 +++++----
include/linux/mfd/ezx-pcap.h | 1 +
2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index c1de4af..de7e637 100644
--- 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
--- 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[]);

--
tg: (2c1c1eb..) pcap/irq_to_pcap (depends on: pcap/fix-adc-locking)
--
Daniel Ribeiro
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