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gpio: nxp_s32: implement get config/direction APIs

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Implement pin_get_config() and port_get_direction() GPIO APIs for NXP
S32 devices.

Signed-off-by: Manuel Argüelles <manuel.arguelles@nxp.com>
This commit is contained in:
Manuel Argüelles 2023-08-17 15:27:03 +07:00 • committed by Carles Cufí
commit 927360e4e4
1 changed files with 93 additions and 1 deletions
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94
drivers/gpio/gpio_nxp_s32.c
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@ -6,6 +6,7 @@
#define DT_DRV_COMPAT nxp_s32_gpio
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/gpio/gpio_utils.h>
@ -307,6 +308,91 @@ static uint32_t nxp_s32_gpio_get_pending_int(const struct device *dev)
#endif
}
#ifdef CONFIG_GPIO_GET_CONFIG
static int nxp_s32_gpio_pin_get_config(const struct device *dev,
gpio_pin_t pin,
gpio_flags_t *out_flags)
{
const struct gpio_nxp_s32_config *config = dev->config;
Siul2_Dio_Ip_GpioType *gpio_base = config->gpio_base;
Siul2_Port_Ip_PortType *port_base = config->port_base;
Siul2_Dio_Ip_PinsChannelType pins_output;
gpio_flags_t flags = 0;
if ((port_base->MSCR[pin] & SIUL2_MSCR_IBE_MASK) != 0) {
flags |= GPIO_INPUT;
}
if ((port_base->MSCR[pin] & SIUL2_MSCR_OBE_MASK) != 0) {
flags |= GPIO_OUTPUT;
pins_output = Siul2_Dio_Ip_GetPinsOutput(gpio_base);
if ((pins_output & BIT(pin)) != 0) {
flags |= GPIO_OUTPUT_HIGH;
} else {
flags |= GPIO_OUTPUT_LOW;
}
#ifdef FEATURE_SIUL2_PORT_IP_HAS_OPEN_DRAIN
if ((port_base->MSCR[pin] & SIUL2_MSCR_ODE_MASK) != 0) {
flags |= GPIO_OPEN_DRAIN;
}
#endif /* FEATURE_SIUL2_PORT_IP_HAS_OPEN_DRAIN */
}
if ((port_base->MSCR[pin] & SIUL2_MSCR_PUE_MASK) != 0) {
if ((port_base->MSCR[pin] & SIUL2_MSCR_PUS_MASK) != 0) {
flags |= GPIO_PULL_UP;
} else {
flags |= GPIO_PULL_DOWN;
}
}
*out_flags = flags;
return 0;
}
#endif /* CONFIG_GPIO_GET_CONFIG */
#ifdef CONFIG_GPIO_GET_DIRECTION
static int nxp_s32_gpio_port_get_direction(const struct device *dev,
gpio_port_pins_t map,
gpio_port_pins_t *inputs,
gpio_port_pins_t *outputs)
{
const struct gpio_nxp_s32_config *config = dev->config;
Siul2_Port_Ip_PortType *port_base = config->port_base;
gpio_port_pins_t ip = 0;
gpio_port_pins_t op = 0;
uint32_t pin;
map &= config->common.port_pin_mask;
if (inputs != NULL) {
while (map) {
pin = find_lsb_set(map) - 1;
ip |= (!!(port_base->MSCR[pin] & SIUL2_MSCR_IBE_MASK)) * BIT(pin);
map &= ~BIT(pin);
}
*inputs = ip;
}
if (outputs != NULL) {
while (map) {
pin = find_lsb_set(map) - 1;
op |= (!!(port_base->MSCR[pin] & SIUL2_MSCR_OBE_MASK)) * BIT(pin);
map &= ~BIT(pin);
}
*outputs = op;
}
return 0;
}
#endif /* CONFIG_GPIO_GET_DIRECTION */
static const struct gpio_driver_api gpio_nxp_s32_driver_api = {
.pin_configure = nxp_s32_gpio_configure,
.port_get_raw = nxp_s32_gpio_port_get_raw,
@ -316,7 +402,13 @@ static const struct gpio_driver_api gpio_nxp_s32_driver_api = {
.port_toggle_bits = nxp_s32_gpio_port_toggle_bits,
.pin_interrupt_configure = nxp_s32_gpio_pin_interrupt_configure,
.manage_callback = nxp_s32_gpio_manage_callback,
.get_pending_int = nxp_s32_gpio_get_pending_int
.get_pending_int = nxp_s32_gpio_get_pending_int,
#ifdef CONFIG_GPIO_GET_CONFIG
.pin_get_config = nxp_s32_gpio_pin_get_config,
#endif
#ifdef CONFIG_GPIO_GET_DIRECTION
.port_get_direction = nxp_s32_gpio_port_get_direction,
#endif
};
/* Calculate the port pin mask based on ngpios and gpio-reserved-ranges node