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stm32: cleanup how we get external interrupt base addr

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Move to utilizing an inline function for getting the base addr of the
external interrupt register region.  This is in prep for support more
than 32 external interrupts.

Change-Id: Ifdaad67703068395a7749543ef68435435e7c9ba
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2016-10-19 11:26:55 -05:00 • committed by Fabien Parent
commit 89f71ba0e2
1 changed files with 9 additions and 8 deletions
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17
drivers/interrupt_controller/exti_stm32.c
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@ -62,13 +62,14 @@ struct stm32_exti_data {
struct __exti_cb cb[EXTI_LINES];
};
#define AS_EXTI(__base_addr) \
((struct stm32_exti *)(__base_addr))
static inline struct stm32_exti *get_exti_base_addr(int line)
{
return (struct stm32_exti *)EXTI_BASE;
}
void stm32_exti_enable(int line)
{
volatile struct stm32_exti *exti = AS_EXTI(EXTI_BASE);
volatile struct stm32_exti *exti = get_exti_base_addr(line);
int irqnum;
exti->imr |= 1 << line;
@ -89,7 +90,7 @@ void stm32_exti_enable(int line)
void stm32_exti_disable(int line)
{
volatile struct stm32_exti *exti = AS_EXTI(EXTI_BASE);
volatile struct stm32_exti *exti = get_exti_base_addr(line);
exti->imr &= ~(1 << line);
}
@ -101,7 +102,7 @@ void stm32_exti_disable(int line)
*/
static inline int stm32_exti_is_pending(int line)
{
volatile struct stm32_exti *exti = AS_EXTI(EXTI_BASE);
volatile struct stm32_exti *exti = get_exti_base_addr(line);
return (exti->pr & (1 << line)) ? 1 : 0;
}
@ -113,14 +114,14 @@ static inline int stm32_exti_is_pending(int line)
*/
static inline void stm32_exti_clear_pending(int line)
{
volatile struct stm32_exti *exti = AS_EXTI(EXTI_BASE);
volatile struct stm32_exti *exti = get_exti_base_addr(line);
exti->pr = 1 << line;
}
void stm32_exti_trigger(int line, int trigger)
{
volatile struct stm32_exti *exti = AS_EXTI(EXTI_BASE);
volatile struct stm32_exti *exti = get_exti_base_addr(line);
if (trigger & STM32_EXTI_TRIG_RISING) {
exti->rtsr |= 1 << line;