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gpio: omap: convert debounce functions switch to use gpio offset

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Convert debounce functions to use GPIO offset instead of system
GPIO numbers. This allows to drop unneeded conversations between
system GPIO <-> GPIO offset which are done in many places and
many times.
It is safe to do now because:
- gpiolib always passes GPIO offset to GPIO controller
- OMAP GPIO driver converted to use IRQ domain

This is preparation step before removing:
 #define GPIO_INDEX(bank, gpio)
 #define GPIO_BIT(bank, gpio)
 int omap_irq_to_gpio()

Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Grygorii Strashko 2015-03-23 14:18:25 +02:00 committed by Linus Walleij
parent 04ebcbd82e
commit 4a58d2296f
1 changed files with 7 additions and 7 deletions
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14
drivers/gpio/gpio-omap.c
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@ -208,13 +208,13 @@ static inline void omap_gpio_dbck_disable(struct gpio_bank *bank)
/**
* omap2_set_gpio_debounce - low level gpio debounce time
* @bank: the gpio bank we're acting upon
* @gpio: the gpio number on this @gpio
* @offset: the gpio number on this @bank
* @debounce: debounce time to use
*
* OMAP's debounce time is in 31us steps so we need
* to convert and round up to the closest unit.
*/
static void omap2_set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
static void omap2_set_gpio_debounce(struct gpio_bank *bank, unsigned offset,
unsigned debounce)
{
void __iomem *reg;
@ -231,7 +231,7 @@ static void omap2_set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
else
debounce = (debounce / 0x1f) - 1;
l = GPIO_BIT(bank, gpio);
l = BIT(offset);
clk_prepare_enable(bank->dbck);
reg = bank->base + bank->regs->debounce;
@ -266,16 +266,16 @@ static void omap2_set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
/**
* omap_clear_gpio_debounce - clear debounce settings for a gpio
* @bank: the gpio bank we're acting upon
* @gpio: the gpio number on this @gpio
* @offset: the gpio number on this @bank
*
* If a gpio is using debounce, then clear the debounce enable bit and if
* this is the only gpio in this bank using debounce, then clear the debounce
* time too. The debounce clock will also be disabled when calling this function
* if this is the only gpio in the bank using debounce.
*/
static void omap_clear_gpio_debounce(struct gpio_bank *bank, unsigned gpio)
static void omap_clear_gpio_debounce(struct gpio_bank *bank, unsigned offset)
{
u32 gpio_bit = GPIO_BIT(bank, gpio);
u32 gpio_bit = BIT(offset);
if (!bank->dbck_flag)
return;
@ -659,7 +659,7 @@ static void omap_reset_gpio(struct gpio_bank *bank, int gpio)
omap_set_gpio_irqenable(bank, gpio, 0);
omap_clear_gpio_irqstatus(bank, gpio);
omap_set_gpio_triggering(bank, GPIO_INDEX(bank, gpio), IRQ_TYPE_NONE);
omap_clear_gpio_debounce(bank, gpio);
omap_clear_gpio_debounce(bank, GPIO_INDEX(bank, gpio));
}
/* Use disable_irq_wake() and enable_irq_wake() functions from drivers */