9cdc5d38b2
This adds the SPI driver for the Renesas SmartBond(tm) DA1469x MCU family. The driver only supports controller mode. All four SPI modes are supported. Note that the lowest supported speed is 2285714Hz. Requesting speeds higher than 16MHz, will result in a 16MHz SCLK. Co-authored-by: Stan Geitel <stan@geitel.nl> Signed-off-by: Ben Lauret <ben.lauret.wm@renesas.com>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Copyright (c) 2022, Renesas Electronics Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/drivers/pinctrl.h>
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#include <DA1469xAB.h>
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/** Utility macro to retrieve starting mode register and pin count for GPIO port from DT */
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#define GPIO_PORT_ENTRY(nodelabel) \
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{ DT_REG_ADDR_BY_IDX(DT_NODELABEL(nodelabel), 1), \
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DT_PROP(DT_NODELABEL(nodelabel), ngpios) }
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struct gpio_port {
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uint32_t p0_mode_addr;
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uint8_t pin_count;
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};
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static const struct gpio_port smartbond_gpio_ports[] = {
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GPIO_PORT_ENTRY(gpio0),
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GPIO_PORT_ENTRY(gpio1),
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};
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static void pinctrl_configure_pin(const pinctrl_soc_pin_t *pin)
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{
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volatile uint32_t *reg;
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uint32_t reg_val;
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__ASSERT_NO_MSG(pin->port < ARRAY_SIZE(smartbond_gpio_ports));
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__ASSERT_NO_MSG(pin->pin < smartbond_gpio_ports[pin->port].pin_count);
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reg = (volatile uint32_t *)smartbond_gpio_ports[pin->port].p0_mode_addr;
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reg += pin->pin;
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reg_val = pin->func << GPIO_P0_00_MODE_REG_PID_Pos;
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if (pin->bias_pull_up) {
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reg_val |= 0x01 << GPIO_P0_00_MODE_REG_PUPD_Pos;
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} else if (pin->bias_pull_down) {
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reg_val |= 0x02 << GPIO_P0_00_MODE_REG_PUPD_Pos;
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} else if (pin->output_enable) {
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reg_val |= 0x03 << GPIO_P0_00_MODE_REG_PUPD_Pos;
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}
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*reg = reg_val;
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}
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int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
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uintptr_t reg)
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{
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ARG_UNUSED(reg);
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for (uint8_t i = 0U; i < pin_cnt; i++) {
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pinctrl_configure_pin(pins++);
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}
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return 0;
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}
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