diff options
| author | David Brownell <dbrownell@users.sourceforge.net> | 2006-12-06 17:14:10 -0800 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-05-05 10:57:01 +0100 |
| commit | 58781016c3637caf314ca7f579ce0acd1b0378dc (patch) | |
| tree | 93e032cd5a3a75c316658488536eba78401da8de /arch | |
| parent | 56a2564185db752d83bbc78be9b1e257bf103444 (diff) | |
| download | linux-58781016c3637caf314ca7f579ce0acd1b0378dc.tar.bz2 | |
ARM: OMAP: speed up gpio irq handling
Speedup and shrink GPIO irq handling code, by using a pointer
that's available in the irq_chip structure instead of calling
the get_gpio_bank() function. On OMAP1 this saves 44 words,
most of which were in IRQ critical path methods. Hey, every
few instructions help.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-omap/gpio.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 1da7a5d1ddd9..14a3f7118c73 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -584,7 +584,7 @@ static int gpio_irq_type(unsigned irq, unsigned type) && (type & (IRQ_TYPE_LEVEL_LOW|IRQ_TYPE_LEVEL_HIGH))) return -EINVAL; - bank = get_gpio_bank(gpio); + bank = get_irq_chip_data(irq); spin_lock(&bank->lock); retval = _set_gpio_triggering(bank, get_gpio_index(gpio), type); if (retval == 0) { @@ -823,7 +823,7 @@ static int gpio_wake_enable(unsigned int irq, unsigned int enable) if (check_gpio(gpio) < 0) return -ENODEV; - bank = get_gpio_bank(gpio); + bank = get_irq_chip_data(irq); retval = _set_gpio_wakeup(bank, get_gpio_index(gpio), enable); return retval; @@ -1038,7 +1038,7 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) static void gpio_irq_shutdown(unsigned int irq) { unsigned int gpio = irq - IH_GPIO_BASE; - struct gpio_bank *bank = get_gpio_bank(gpio); + struct gpio_bank *bank = get_irq_chip_data(irq); _reset_gpio(bank, gpio); } @@ -1046,7 +1046,7 @@ static void gpio_irq_shutdown(unsigned int irq) static void gpio_ack_irq(unsigned int irq) { unsigned int gpio = irq - IH_GPIO_BASE; - struct gpio_bank *bank = get_gpio_bank(gpio); + struct gpio_bank *bank = get_irq_chip_data(irq); _clear_gpio_irqstatus(bank, gpio); } @@ -1054,7 +1054,7 @@ static void gpio_ack_irq(unsigned int irq) static void gpio_mask_irq(unsigned int irq) { unsigned int gpio = irq - IH_GPIO_BASE; - struct gpio_bank *bank = get_gpio_bank(gpio); + struct gpio_bank *bank = get_irq_chip_data(irq); _set_gpio_irqenable(bank, gpio, 0); } @@ -1063,7 +1063,7 @@ static void gpio_unmask_irq(unsigned int irq) { unsigned int gpio = irq - IH_GPIO_BASE; unsigned int gpio_idx = get_gpio_index(gpio); - struct gpio_bank *bank = get_gpio_bank(gpio); + struct gpio_bank *bank = get_irq_chip_data(irq); _set_gpio_irqenable(bank, gpio_idx, 1); } @@ -1092,7 +1092,7 @@ static void mpuio_ack_irq(unsigned int irq) static void mpuio_mask_irq(unsigned int irq) { unsigned int gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE); - struct gpio_bank *bank = get_gpio_bank(gpio); + struct gpio_bank *bank = get_irq_chip_data(irq); _set_gpio_irqenable(bank, gpio, 0); } @@ -1100,7 +1100,7 @@ static void mpuio_mask_irq(unsigned int irq) static void mpuio_unmask_irq(unsigned int irq) { unsigned int gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE); - struct gpio_bank *bank = get_gpio_bank(gpio); + struct gpio_bank *bank = get_irq_chip_data(irq); _set_gpio_irqenable(bank, gpio, 1); } @@ -1275,6 +1275,7 @@ static int __init _omap_gpio_init(void) #endif for (j = bank->virtual_irq_start; j < bank->virtual_irq_start + gpio_count; j++) { + set_irq_chip_data(j, bank); if (bank_is_mpuio(bank)) set_irq_chip(j, &mpuio_irq_chip); else |