Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b11e9e020c8c6cdd7e7cc6d5178cce2ad0ac0784 Commit: b11e9e020c8c6cdd7e7cc6d5178cce2ad0ac0784 Parent: 01af72e4e36fba66cd7cfc2a628efee866c346d1 Author: Herbert Valerio Riedel <[EMAIL PROTECTED]> AuthorDate: Thu Nov 29 15:19:56 2007 +0100 Committer: Russell King <[EMAIL PROTECTED]> CommitDate: Sat Jan 26 15:03:46 2008 +0000
[ARM] Orion: provide GPIO method for enabling hardware assisted blinking This is a pre-requisite for implementing proper hardware accelerated GPIO LED flashing, and since we want proper locking, it's sensible to provide the orion specific orion_gpio_set_blink() implementation within mach-orion/gpio.c. The functions orion_gpio_set_blink() and gpio_set_value() implicitly turn off each others state. Signed-off-by: Herbert Valerio Riedel <[EMAIL PROTECTED]> Acked-by: Tzachi Perelstein <[EMAIL PROTECTED]> Acked-by: Nicolas Pitre <[EMAIL PROTECTED]> Acked-by: Russell King <[EMAIL PROTECTED]> --- arch/arm/mach-orion/gpio.c | 19 +++++++++++++++++++ include/asm-arm/arch-orion/gpio.h | 1 + 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-orion/gpio.c b/arch/arm/mach-orion/gpio.c index af8553c..0418f5b 100644 --- a/arch/arm/mach-orion/gpio.c +++ b/arch/arm/mach-orion/gpio.c @@ -76,6 +76,7 @@ int gpio_direction_output(unsigned pin, int value) gpio_label[pin] = "?"; mask = 1 << pin; + orion_clrbits(GPIO_BLINK_EN, mask); if (value) orion_setbits(GPIO_OUT, mask); else @@ -107,6 +108,7 @@ void gpio_set_value(unsigned pin, int value) spin_lock_irqsave(&gpio_lock, flags); + orion_clrbits(GPIO_BLINK_EN, mask); if (value) orion_setbits(GPIO_OUT, mask); else @@ -116,6 +118,23 @@ void gpio_set_value(unsigned pin, int value) } EXPORT_SYMBOL(gpio_set_value); +void orion_gpio_set_blink(unsigned pin, int blink) +{ + unsigned long flags; + int mask = 1 << pin; + + spin_lock_irqsave(&gpio_lock, flags); + + orion_clrbits(GPIO_OUT, mask); + if (blink) + orion_setbits(GPIO_BLINK_EN, mask); + else + orion_clrbits(GPIO_BLINK_EN, mask); + + spin_unlock_irqrestore(&gpio_lock, flags); +} +EXPORT_SYMBOL(orion_gpio_set_blink); + int gpio_request(unsigned pin, const char *label) { int ret = 0; diff --git a/include/asm-arm/arch-orion/gpio.h b/include/asm-arm/arch-orion/gpio.h index 6d5848e..d66284f 100644 --- a/include/asm-arm/arch-orion/gpio.h +++ b/include/asm-arm/arch-orion/gpio.h @@ -12,6 +12,7 @@ extern int gpio_direction_input(unsigned pin); extern int gpio_direction_output(unsigned pin, int value); extern int gpio_get_value(unsigned pin); extern void gpio_set_value(unsigned pin, int value); +extern void orion_gpio_set_blink(unsigned pin, int blink); extern void gpio_display(void); /* debug */ static inline int gpio_to_irq(int pin) - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html