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/*
* Copyright (c) 2022-2023, Gerson Fernando Budke <nandojve@gmail.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/drivers/clock_control/atmel_sam_pmc.h>
#include <soc_gpio.h>
/** Utility macro that expands to the GPIO port address if it exists */
#define SAM_PORT_ADDR_OR_NONE(nodelabel) \
IF_ENABLED(DT_NODE_EXISTS(DT_NODELABEL(nodelabel)), \
(DT_REG_ADDR(DT_NODELABEL(nodelabel)),))
/** Utility macro that expands to the GPIO Peripheral ID if it exists */
#define SAM_PORT_CLOCKS_OR_NONE(nodelabel) \
IF_ENABLED(DT_NODE_EXISTS(DT_NODELABEL(nodelabel)), \
(SAM_DT_CLOCK_PMC_CFG(0, DT_NODELABEL(nodelabel)),))
/** SAM port addresses */
static const uint32_t sam_port_addrs[] = {
#ifdef ID_GPIO
SAM_PORT_ADDR_OR_NONE(gpioa)
SAM_PORT_ADDR_OR_NONE(gpiob)
SAM_PORT_ADDR_OR_NONE(gpioc)
#else
SAM_PORT_ADDR_OR_NONE(pioa)
SAM_PORT_ADDR_OR_NONE(piob)
SAM_PORT_ADDR_OR_NONE(pioc)
SAM_PORT_ADDR_OR_NONE(piod)
SAM_PORT_ADDR_OR_NONE(pioe)
SAM_PORT_ADDR_OR_NONE(piof)
#endif
};
/** SAM port clocks */
static const struct atmel_sam_pmc_config sam_port_clocks[] = {
#ifdef ID_GPIO
SAM_PORT_CLOCKS_OR_NONE(gpioa)
SAM_PORT_CLOCKS_OR_NONE(gpiob)
SAM_PORT_CLOCKS_OR_NONE(gpioc)
#else
SAM_PORT_CLOCKS_OR_NONE(pioa)
SAM_PORT_CLOCKS_OR_NONE(piob)
SAM_PORT_CLOCKS_OR_NONE(pioc)
SAM_PORT_CLOCKS_OR_NONE(piod)
SAM_PORT_CLOCKS_OR_NONE(pioe)
SAM_PORT_CLOCKS_OR_NONE(piof)
#endif
};
static void pinctrl_configure_pin(pinctrl_soc_pin_t pin)
{
struct soc_gpio_pin soc_pin;
uint8_t port_idx, port_func;
port_idx = SAM_PINMUX_PORT_GET(pin);
__ASSERT_NO_MSG(port_idx < ARRAY_SIZE(sam_port_addrs));
port_func = SAM_PINMUX_FUNC_GET(pin);
#ifdef ID_GPIO
soc_pin.regs = (Gpio *) sam_port_addrs[port_idx];
#else
soc_pin.regs = (Pio *) sam_port_addrs[port_idx];
#endif
soc_pin.periph_id = sam_port_clocks[port_idx].peripheral_id;
soc_pin.mask = 1 << SAM_PINMUX_PIN_GET(pin);
soc_pin.flags = SAM_PINCTRL_FLAGS_GET(pin) << SOC_GPIO_FLAGS_POS;
if (port_func == SAM_PINMUX_FUNC_periph) {
soc_pin.flags |= (SAM_PINMUX_PERIPH_GET(pin)
<< SOC_GPIO_FUNC_POS);
}
soc_gpio_configure(&soc_pin);
}
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
uintptr_t reg)
{
ARG_UNUSED(reg);
for (uint8_t i = 0U; i < pin_cnt; i++) {
pinctrl_configure_pin(*pins++);
}
return 0;
}