// SPDX-License-Identifier: GPL-2.0+ /* * Mediatek 8250 driver. * * Copyright (c) 2014 MundoReader S.L. * Author: Matthias Brugger <[email protected]> */ #include <linux/clk.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/pinctrl/consumer.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/serial_8250.h> #include <linux/serial_reg.h> #include <linux/console.h> #include <linux/dma-mapping.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include "8250.h" #define MTK_UART_HIGHS … #define MTK_UART_SAMPLE_COUNT … #define MTK_UART_SAMPLE_POINT … #define MTK_UART_RATE_FIX … #define MTK_UART_ESCAPE_DAT … #define MTK_UART_ESCAPE_EN … #define MTK_UART_DMA_EN … #define MTK_UART_RXTRI_AD … #define MTK_UART_FRACDIV_L … #define MTK_UART_FRACDIV_M … #define MTK_UART_DEBUG0 … #define MTK_UART_IER_XOFFI … #define MTK_UART_IER_RTSI … #define MTK_UART_IER_CTSI … #define MTK_UART_EFR … #define MTK_UART_EFR_EN … #define MTK_UART_EFR_RTS … #define MTK_UART_EFR_CTS … #define MTK_UART_EFR_NO_SW_FC … #define MTK_UART_EFR_XON1_XOFF1 … #define MTK_UART_EFR_XON2_XOFF2 … #define MTK_UART_EFR_SW_FC_MASK … #define MTK_UART_EFR_HW_FC … #define MTK_UART_DMA_EN_TX … #define MTK_UART_DMA_EN_RX … #define MTK_UART_ESCAPE_CHAR … #define MTK_UART_RX_SIZE … #define MTK_UART_TX_TRIGGER … #define MTK_UART_RX_TRIGGER … #define MTK_UART_XON1 … #define MTK_UART_XOFF1 … #ifdef CONFIG_SERIAL_8250_DMA enum dma_rx_status { … }; #endif struct mtk8250_data { … }; /* flow control mode */ enum { … }; #ifdef CONFIG_SERIAL_8250_DMA static void mtk8250_rx_dma(struct uart_8250_port *up); static void mtk8250_dma_rx_complete(void *param) { … } static void mtk8250_rx_dma(struct uart_8250_port *up) { … } static void mtk8250_dma_enable(struct uart_8250_port *up) { … } #endif static int mtk8250_startup(struct uart_port *port) { … } static void mtk8250_shutdown(struct uart_port *port) { … } static void mtk8250_disable_intrs(struct uart_8250_port *up, int mask) { … } static void mtk8250_enable_intrs(struct uart_8250_port *up, int mask) { … } static void mtk8250_set_flow_ctrl(struct uart_8250_port *up, int mode) { … } static void mtk8250_set_termios(struct uart_port *port, struct ktermios *termios, const struct ktermios *old) { … } static int __maybe_unused mtk8250_runtime_suspend(struct device *dev) { … } static int __maybe_unused mtk8250_runtime_resume(struct device *dev) { … } static void mtk8250_do_pm(struct uart_port *port, unsigned int state, unsigned int old) { … } #ifdef CONFIG_SERIAL_8250_DMA static bool mtk8250_dma_filter(struct dma_chan *chan, void *param) { … } #endif static int mtk8250_probe_of(struct platform_device *pdev, struct uart_port *p, struct mtk8250_data *data) { … } static int mtk8250_probe(struct platform_device *pdev) { … } static void mtk8250_remove(struct platform_device *pdev) { … } static int __maybe_unused mtk8250_suspend(struct device *dev) { … } static int __maybe_unused mtk8250_resume(struct device *dev) { … } static const struct dev_pm_ops mtk8250_pm_ops = …; static const struct of_device_id mtk8250_of_match[] = …; MODULE_DEVICE_TABLE(of, mtk8250_of_match); static struct platform_driver mtk8250_platform_driver = …; module_platform_driver(…) …; #ifdef CONFIG_SERIAL_8250_CONSOLE static int __init early_mtk8250_setup(struct earlycon_device *device, const char *options) { … } OF_EARLYCON_DECLARE(…); #endif MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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