lkml.org 
[lkml]   [2014]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/5] gpio: dwapb: use d->mask instead od BIT(bit)
Date
d->mask contains exact the same information as BIT(bit) so we could save
a few cycles here.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/gpio/gpio-dwapb.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 13f1ad0..d85fc2e 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -113,7 +113,7 @@ static void dwapb_irq_enable(struct irq_data *d)

irq_gc_lock(igc);
val = readl(gpio->regs + GPIO_INTEN);
- val |= BIT(d->hwirq);
+ val |= d->mask;
writel(val, gpio->regs + GPIO_INTEN);
irq_gc_unlock(igc);
}
@@ -126,7 +126,7 @@ static void dwapb_irq_disable(struct irq_data *d)

irq_gc_lock(igc);
val = readl(gpio->regs + GPIO_INTEN);
- val &= ~BIT(d->hwirq);
+ val &= ~d->mask;
writel(val, gpio->regs + GPIO_INTEN);
irq_gc_unlock(igc);
}
@@ -158,7 +158,7 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)
{
struct irq_chip_generic *igc = irq_data_get_irq_chip_data(d);
struct dwapb_gpio *gpio = igc->private;
- int bit = d->hwirq;
+ u32 mask = d->mask;
unsigned long level, polarity;

if (type & ~(IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING |
@@ -171,24 +171,24 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)

switch (type) {
case IRQ_TYPE_EDGE_BOTH:
- level |= BIT(bit);
- dwapb_toggle_trigger(gpio, bit);
+ level |= mask;
+ dwapb_toggle_trigger(gpio, d->hwirq);
break;
case IRQ_TYPE_EDGE_RISING:
- level |= BIT(bit);
- polarity |= BIT(bit);
+ level |= mask;
+ polarity |= mask;
break;
case IRQ_TYPE_EDGE_FALLING:
- level |= BIT(bit);
- polarity &= ~BIT(bit);
+ level |= mask;
+ polarity &= ~mask;
break;
case IRQ_TYPE_LEVEL_HIGH:
- level &= ~BIT(bit);
- polarity |= BIT(bit);
+ level &= ~mask;
+ polarity |= mask;
break;
case IRQ_TYPE_LEVEL_LOW:
- level &= ~BIT(bit);
- polarity &= ~BIT(bit);
+ level &= ~mask;
+ polarity &= ~mask;
break;
}

--
1.9.1


\
 
 \ /
  Last update: 2014-04-07 13:01    [W:0.070 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site