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i2c-pxa2xx: add support for shared IRQ handler

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Sodaville has three of them on a single IRQ. IRQF_DISABLED is removed
because it is a NOP allready and scheduled for removal.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Sebastian Andrzej Siewior 2011-02-23 12:38:18 +01:00 committed by Ben Dooks
parent 7e94dd154e
commit c66dc52919
1 changed files with 8 additions and 2 deletions
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10
drivers/i2c/busses/i2c-pxa.c
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@ -956,11 +956,17 @@ static void i2c_pxa_irq_rxfull(struct pxa_i2c *i2c, u32 isr)
writel(icr, _ICR(i2c));
}
#define VALID_INT_SOURCE (ISR_SSD | ISR_ALD | ISR_ITE | ISR_IRF | \
ISR_SAD | ISR_BED)
static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id)
{
struct pxa_i2c *i2c = dev_id;
u32 isr = readl(_ISR(i2c));
isr &= VALID_INT_SOURCE;
if (!isr)
return IRQ_NONE;
if (i2c_debug > 2 && 0) {
dev_dbg(&i2c->adap.dev, "%s: ISR=%08x, ICR=%08x, IBMR=%02x\n",
__func__, isr, readl(_ICR(i2c)), readl(_IBMR(i2c)));
@ -975,7 +981,7 @@ static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id)
/*
* Always clear all pending IRQs.
*/
writel(isr & (ISR_SSD|ISR_ALD|ISR_ITE|ISR_IRF|ISR_SAD|ISR_BED), _ISR(i2c));
writel(isr, _ISR(i2c));
if (isr & ISR_SAD)
i2c_pxa_slave_start(i2c, isr);
@ -1120,7 +1126,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
i2c->adap.algo = &i2c_pxa_pio_algorithm;
} else {
i2c->adap.algo = &i2c_pxa_algorithm;
ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED,
ret = request_irq(irq, i2c_pxa_handler, IRQF_SHARED,
i2c->adap.name, i2c);
if (ret)
goto ereqirq;