From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: LAK <linux-arm-kernel@lists.infradead.org>,
Russell King <linux@arm.linux.org.uk>,
Lennert Buytenhek <buytenh@wantstofly.org>
Subject: [patch 17/23] arm: at91: Cleanup irq chip
Date: Fri, 25 Mar 2011 13:22:07 -0000 [thread overview]
Message-ID: <20110325132048.996818347@linutronix.de> (raw)
In-Reply-To: 20110325131617.258789658@linutronix.de
[-- Attachment #1: arm-at91.patch --]
[-- Type: text/plain, Size: 2297 bytes --]
Avoid the whole lazy disable dance in the demux handler by providing a
irq_disable() callback.
Use the proper accessor functions and tidy up gpio_irq_handler()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/arm/mach-at91/gpio.c | 31 +++++++++----------------------
1 file changed, 9 insertions(+), 22 deletions(-)
Index: linux-2.6-tip/arch/arm/mach-at91/gpio.c
===================================================================
--- linux-2.6-tip.orig/arch/arm/mach-at91/gpio.c
+++ linux-2.6-tip/arch/arm/mach-at91/gpio.c
@@ -375,6 +375,7 @@ static int gpio_irq_type(struct irq_data
static struct irq_chip gpio_irqchip = {
.name = "GPIO",
+ .irq_disable = gpio_irq_mask,
.irq_mask = gpio_irq_mask,
.irq_unmask = gpio_irq_unmask,
.irq_set_type = gpio_irq_type,
@@ -384,16 +385,14 @@ static struct irq_chip gpio_irqchip = {
static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
{
unsigned pin;
- struct irq_desc *gpio;
- struct at91_gpio_chip *at91_gpio;
- void __iomem *pio;
+ struct irq_data *idata = irq_desc_get_irq_data(desc);
+ struct irq_chip *chip = irq_data_get_chip(data);
+ struct at91_gpio_chip *at91_gpio = irq_data_get_chip_data(data);
+ void __iomem *pio = at91_gpio->regbase;
u32 isr;
- at91_gpio = get_irq_chip_data(irq);
- pio = at91_gpio->regbase;
-
/* temporarily mask (level sensitive) parent IRQ */
- desc->irq_data.chip->irq_ack(&desc->irq_data);
+ chip->irq_ack(idata);
for (;;) {
/* Reading ISR acks pending (edge triggered) GPIO interrupts.
* When there none are pending, we're finished unless we need
@@ -409,27 +408,15 @@ static void gpio_irq_handler(unsigned ir
}
pin = at91_gpio->chip.base;
- gpio = &irq_desc[pin];
while (isr) {
- if (isr & 1) {
- if (unlikely(gpio->depth)) {
- /*
- * The core ARM interrupt handler lazily disables IRQs so
- * another IRQ must be generated before it actually gets
- * here to be disabled on the GPIO controller.
- */
- gpio_irq_mask(irq_get_irq_data(pin));
- }
- else
- generic_handle_irq(pin);
- }
+ if (isr & 1)
+ generic_handle_irq(pin);
pin++;
- gpio++;
isr >>= 1;
}
}
- desc->irq_data.chip->irq_unmask(&desc->irq_data);
+ chip->irq_unmask(idata);
/* now it may re-trigger */
}
next prev parent reply other threads:[~2011-03-25 13:22 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-25 13:21 [patch 00/23] ARM: Final genirq cleanup Thomas Gleixner
2011-03-25 13:21 ` [patch 01/23] arm: Ns9xxx: Remove private irq flow handler Thomas Gleixner
2011-03-25 13:21 ` [patch 02/23] arm: tegra: Remove unused function which fiddles with irq_desc Thomas Gleixner
2011-03-26 20:12 ` Varun Wadekar
2011-03-26 20:24 ` Thomas Gleixner
2011-03-26 22:37 ` Colin Cross
2011-03-27 8:07 ` Thomas Gleixner
2011-03-25 13:21 ` [patch 03/23] arm: Use genirq lockdep helper to set lock class Thomas Gleixner
2011-03-25 13:21 ` [patch 04/23] arm: Use irq flag setter function Thomas Gleixner
2011-03-25 13:21 ` [patch 05/23] arm: msm: Convert to new irq chip functions Thomas Gleixner
2011-03-25 13:21 ` [patch 06/23] arm: Cleanup irq_desc access Thomas Gleixner
2011-03-25 13:21 ` [patch 07/23] arm: plat-samsung: Use proper irq accessor functions Thomas Gleixner
2011-03-25 13:21 ` [patch 08/23] arm: stmp3xxx: Use generic_handle_irq() Thomas Gleixner
2011-03-25 13:21 ` [patch 09/23] arm: nomadik: Use local irq state Thomas Gleixner
2011-03-25 13:22 ` [patch 10/23] arm: plat-omap: Cleanup irq_desc access Thomas Gleixner
2011-03-25 13:22 ` [patch 11/23] arm: msm: Use proper irq accessor functions Thomas Gleixner
2011-03-25 13:22 ` [patch 12/23] arm: vt8500: Use proper irq accessors Thomas Gleixner
2011-03-25 13:22 ` [patch 13/23] arm: mxc: Use generic_handle_irq() Thomas Gleixner
2011-03-25 13:22 ` [patch 14/23] arm: gemini: Use proper irq accessor functions Thomas Gleixner
2011-03-25 13:22 ` [patch 15/23] arm: ep93xx: " Thomas Gleixner
2011-03-25 13:22 ` [patch 16/23] arm: davinci: Cleanup irq chip code Thomas Gleixner
2011-03-25 13:22 ` Thomas Gleixner [this message]
2011-03-25 21:03 ` [patch 17/23] arm: at91: Cleanup irq chip Thomas Gleixner
2011-03-27 15:02 ` Sergei Shtylyov
2011-03-27 15:47 ` Thomas Gleixner
2011-03-25 13:22 ` [patch 18/23] arm: gic: Use proper accessor functions Thomas Gleixner
2011-03-25 13:22 ` [patch 19/23] arm: dove: Use proper irq " Thomas Gleixner
2011-03-25 13:22 ` [patch 20/23] arm: Use generic show_interrupts() Thomas Gleixner
2011-03-25 13:22 ` [patch 21/23] arm: Cleanup the irq namespace Thomas Gleixner
2011-04-18 17:43 ` H Hartley Sweeten
2011-03-25 13:22 ` [patch 22/23] arm: Reorder irq_set_ function calls Thomas Gleixner
2011-03-25 13:22 ` [patch 23/23] arm: Fold irq_set_chip/irq_set_handler Thomas Gleixner
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