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Subject[PATCH 3/8] gpio: omap: convert debounce functions switch to use gpio offset
Date
From: Grygorii Strashko <grygorii.strashko@linaro.org>

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()

Signed-off-by: Grygorii Strashko <grygorii.strashko@linaro.org>
---
drivers/gpio/gpio-omap.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 7aeee7b..2df693b 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -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 */
--
1.9.1


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