63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/*
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* Copyright (c) 2020 Teslabs Engineering S.L.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT st_stm32_fmc
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#include <device.h>
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#include <drivers/clock_control/stm32_clock_control.h>
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#include <pinmux/stm32/pinmux_stm32.h>
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#include <logging/log.h>
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LOG_MODULE_REGISTER(memc_stm32, CONFIG_MEMC_LOG_LEVEL);
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struct memc_stm32_config {
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uint32_t fmc;
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struct stm32_pclken pclken;
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const struct soc_gpio_pinctrl *pinctrl;
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size_t pinctrl_len;
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};
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static int memc_stm32_init(const struct device *dev)
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{
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const struct memc_stm32_config *config = dev->config;
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int r;
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const struct device *clk;
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/* configure pinmux */
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r = stm32_dt_pinctrl_configure(config->pinctrl, config->pinctrl_len,
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config->fmc);
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if (r < 0) {
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LOG_ERR("FMC pinctrl setup failed (%d)", r);
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return r;
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}
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/* enable FMC peripheral clock */
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clk = DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE);
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r = clock_control_on(clk, (clock_control_subsys_t *)&config->pclken);
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if (r < 0) {
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LOG_ERR("Could not initialize FMC clock (%d)", r);
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return r;
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}
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return 0;
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}
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static const struct soc_gpio_pinctrl pinctrl[] = ST_STM32_DT_INST_PINCTRL(0, 0);
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static const struct memc_stm32_config config = {
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.fmc = DT_INST_REG_ADDR(0),
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.pclken = { .bus = DT_INST_CLOCKS_CELL(0, bus),
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.enr = DT_INST_CLOCKS_CELL(0, bits) },
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.pinctrl = pinctrl,
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.pinctrl_len = ARRAY_SIZE(pinctrl),
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};
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DEVICE_DT_INST_DEFINE(0, memc_stm32_init, NULL, NULL,
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&config, POST_KERNEL, CONFIG_MEMC_INIT_PRIORITY, NULL);
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