linux-kernel - [PATCH 2/4] MFD/PCAP: irq_to

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Message-Id: <1245771131.7750.39.camel@brutus>
Date:	Tue, 23 Jun 2009 12:32:11 -0300
From:	Daniel Ribeiro <drwyrm@...il.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	openezx-devel <openezx-devel@...ts.openezx.org>
Subject: [PATCH 2/4] MFD/PCAP: irq_to_pcap()

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

Signed-off-by: Daniel Ribeiro <drwyrm@...il.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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