diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-02-23 12:38:18 +0100 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2011-03-21 09:23:52 +0000 |
| commit | c66dc529194be374556d166ee7ddb84a7d1d302b (patch) | |
| tree | 7ced04809474bae16d0ad4b7a76b60293397be40 /drivers/i2c/busses | |
| parent | 7e94dd154e934aa2137c427c3b1c8e9a6e465fcd (diff) | |
| download | lwn-c66dc529194be374556d166ee7ddb84a7d1d302b.tar.gz lwn-c66dc529194be374556d166ee7ddb84a7d1d302b.zip | |
i2c-pxa2xx: add support for shared IRQ handler
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>
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-pxa.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c index ab59b7e492ed..fa8dd2c634d9 100644 --- a/drivers/i2c/busses/i2c-pxa.c +++ b/drivers/i2c/busses/i2c-pxa.c @@ -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; |