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drivers: gpio_mcux: Support shared interrupts

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Updating the driver to support multiple
ports sharing a single interrupt.

Signed-off-by: Emilio Benavente <emilio.benavente@nxp.com>
This commit is contained in:
Emilio Benavente 2024-05-16 00:46:23 +00:00 • committed by Chris Friedt
commit 24c1d3ed70
1 changed files with 36 additions and 1 deletions
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37
drivers/gpio/gpio_mcux.c
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@ -332,6 +332,40 @@ static void gpio_mcux_port_isr(const struct device *dev)
gpio_fire_callbacks(&data->callbacks, dev, int_status);
}
#define GPIO_HAS_SHARED_IRQ DT_HAS_COMPAT_STATUS_OKAY(nxp_gpio_cluster)
#if GPIO_HAS_SHARED_IRQ
static void gpio_mcux_shared_cluster_isr(const struct device *ports[])
{
const struct device **current_port = &ports[0];
while (*current_port != NULL) {
gpio_mcux_port_isr(*current_port);
current_port++;
}
}
#define CLUSTER_ARRAY_ELEMENT(node_id) DEVICE_DT_GET(node_id),
#define GPIO_MCUX_CLUSTER_INIT(node_id) \
const struct device *shared_array##node_id[DT_CHILD_NUM_STATUS_OKAY(node_id) + 1] = \
{DT_FOREACH_CHILD_STATUS_OKAY(node_id, CLUSTER_ARRAY_ELEMENT) NULL}; \
\
static int gpio_mcux_shared_interrupt_init##node_id(void) \
{ \
IRQ_CONNECT(DT_IRQN(node_id), \
DT_IRQ(node_id, priority), \
gpio_mcux_shared_cluster_isr, \
shared_array##node_id, 0); \
irq_enable(DT_IRQN(node_id)); \
\
return 0; \
} \
SYS_INIT(gpio_mcux_shared_interrupt_init##node_id, POST_KERNEL, 0);
DT_FOREACH_STATUS_OKAY(nxp_gpio_cluster, GPIO_MCUX_CLUSTER_INIT)
#endif
#ifdef CONFIG_GPIO_GET_DIRECTION
static int gpio_mcux_port_get_direction(const struct device *dev, gpio_port_pins_t map,
gpio_port_pins_t *inputs, gpio_port_pins_t *outputs)
@ -388,7 +422,8 @@ static const struct gpio_driver_api gpio_mcux_driver_api = {
}, \
.gpio_base = (GPIO_Type *) DT_INST_REG_ADDR(n), \
.port_base = (PORT_Type *) GPIO_PORT_BASE_ADDR(n), \
.flags = UTIL_AND(DT_INST_IRQ_HAS_IDX(n, 0), GPIO_INT_ENABLE),\
.flags = UTIL_AND(UTIL_OR(DT_INST_IRQ_HAS_IDX(n, 0), \
GPIO_HAS_SHARED_IRQ), GPIO_INT_ENABLE), \
}; \
\
static struct gpio_mcux_data gpio_mcux_port## n ##_data; \