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75 lines
2.9 KiB
75 lines
2.9 KiB
/* |
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* SPDX-License-Identifier: Apache-2.0 |
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* |
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* Copyright (c) 2024 Realtek Semiconductor Corporation, SIBG-SD7 |
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* Author: Lin Yu-Cheng <lin_yu_cheng@realtek.com> |
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*/ |
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#define DT_DRV_COMPAT realtek_rts5912_uart |
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#include <zephyr/kernel.h> |
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#include <zephyr/drivers/pinctrl.h> |
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#include <zephyr/drivers/uart.h> |
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#include <zephyr/drivers/gpio.h> |
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#include <zephyr/drivers/clock_control.h> |
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#include <zephyr/drivers/clock_control/clock_control_rts5912.h> |
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#include <zephyr/logging/log.h> |
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LOG_MODULE_REGISTER(uart_rts5912, CONFIG_UART_LOG_LEVEL); |
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BUILD_ASSERT(CONFIG_UART_RTS5912_INIT_PRIORITY < CONFIG_SERIAL_INIT_PRIORITY, |
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"The uart_realtek_rts5912 driver must be initialized before the uart_ns16550 driver"); |
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/* device config */ |
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struct uart_rts5912_device_config { |
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const struct pinctrl_dev_config *pcfg; |
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const struct device *clk_dev; |
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struct rts5912_sccon_subsys sccon_cfg; |
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}; |
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/** Device data structure */ |
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struct uart_rts5912_dev_data { |
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}; |
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static int rts5912_uart_init(const struct device *dev) |
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{ |
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const struct uart_rts5912_device_config *const dev_cfg = dev->config; |
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int rc; |
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if (!device_is_ready(dev_cfg->clk_dev)) { |
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return -ENODEV; |
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} |
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rc = clock_control_on(dev_cfg->clk_dev, (clock_control_subsys_t)&dev_cfg->sccon_cfg); |
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if (rc != 0) { |
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return rc; |
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} |
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rc = pinctrl_apply_state(dev_cfg->pcfg, PINCTRL_STATE_DEFAULT); |
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if (rc != 0) { |
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return rc; |
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} |
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return 0; |
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} |
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#define UART_RTS5912_DEVICE_INIT(n) \ |
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PINCTRL_DT_INST_DEFINE(n); \ |
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\ |
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static const struct uart_rts5912_device_config uart_rts5912_dev_cfg_##n = { \ |
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.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n), \ |
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.clk_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)), \ |
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.sccon_cfg = \ |
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{ \ |
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.clk_grp = DT_INST_CLOCKS_CELL_BY_NAME(n, uart##n, clk_grp), \ |
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.clk_idx = DT_INST_CLOCKS_CELL_BY_NAME(n, uart##n, clk_idx), \ |
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}, \ |
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}; \ |
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\ |
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static struct uart_rts5912_dev_data uart_rts5912_dev_data_##n; \ |
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\ |
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DEVICE_DT_INST_DEFINE(n, &rts5912_uart_init, NULL, &uart_rts5912_dev_data_##n, \ |
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&uart_rts5912_dev_cfg_##n, PRE_KERNEL_1, \ |
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CONFIG_UART_RTS5912_INIT_PRIORITY, NULL); |
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DT_INST_FOREACH_STATUS_OKAY(UART_RTS5912_DEVICE_INIT)
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