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Merge pull request #8558 from gebart/pr/kinetis-gpio-interrupt

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kinetis: Optimize GPIO interrupt handler
This commit is contained in:
Kaspar Schleiser 2018-11-08 22:27:38 +01:00 committed by GitHub
commit f3fa8b5ecd
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 6 deletions
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27
cpu/kinetis/periph/gpio.c
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@ -28,6 +28,7 @@
#include <stddef.h>
#include <stdint.h>
#include "cpu.h"
#include "bitarithm.h"
#include "bit.h"
#include "periph/gpio.h"
@ -308,20 +309,27 @@ static inline void irq_handler(PORT_Type *port, int port_num)
/* take interrupt flags only from pins which interrupt is enabled */
uint32_t status = port->ISFR;
for (int i = 0; i < 32; i++) {
if ((status & (1u << i)) && (port->PCR[i] & PORT_PCR_IRQC_MASK)) {
port->ISFR = (1u << i);
int ctx = get_ctx(port_num, i);
isr_ctx[ctx].cb(isr_ctx[ctx].arg);
while (status) {
/* get position of first bit set in status */
unsigned pin = bitarithm_lsb(status);
/* clear it */
status &= ~(1 << pin);
if (port->PCR[pin] & PORT_PCR_IRQC_MASK) {
port->ISFR = (1u << pin);
int ctx = get_ctx(port_num, pin);
gpio_cb_t cb = isr_ctx[ctx].cb;
if (cb) {
cb(isr_ctx[ctx].arg);
}
}
}
cortexm_isr_end();
}
#ifdef PORTA_BASE
void isr_porta(void)
{
irq_handler(PORTA, 0);
cortexm_isr_end();
}
#endif /* PORTA_BASE */
@ -329,6 +337,7 @@ void isr_porta(void)
void isr_portb(void)
{
irq_handler(PORTB, 1);
cortexm_isr_end();
}
#endif /* ISR_PORT_B */
@ -336,6 +345,7 @@ void isr_portb(void)
void isr_portc(void)
{
irq_handler(PORTC, 2);
cortexm_isr_end();
}
#endif /* ISR_PORT_C */
@ -343,6 +353,7 @@ void isr_portc(void)
void isr_portd(void)
{
irq_handler(PORTD, 3);
cortexm_isr_end();
}
#endif /* ISR_PORT_D */
@ -350,6 +361,7 @@ void isr_portd(void)
void isr_porte(void)
{
irq_handler(PORTE, 4);
cortexm_isr_end();
}
#endif /* ISR_PORT_E */
@ -357,6 +369,7 @@ void isr_porte(void)
void isr_portf(void)
{
irq_handler(PORTF, 5);
cortexm_isr_end();
}
#endif /* ISR_PORT_F */
@ -364,6 +377,7 @@ void isr_portf(void)
void isr_portg(void)
{
irq_handler(PORTG, 6);
cortexm_isr_end();
}
#endif /* ISR_PORT_G */
@ -373,6 +387,7 @@ void isr_portb_portc(void)
{
irq_handler(PORTB, 1);
irq_handler(PORTC, 2);
cortexm_isr_end();
}
#endif
#endif /* MODULE_PERIPH_GPIO_IRQ */