This is not used by any boards. Drop it. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: David Müller <d.mueller@elsoft.ch> Reviewed-by: Jagan Teki <jagan@openedev.com>master
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/*
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* (C) Copyright 2002 |
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <linux/compiler.h> |
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#include <asm/arch/s3c24x0_cpu.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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#ifdef CONFIG_SERIAL1 |
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#define UART_NR S3C24X0_UART0 |
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#elif defined(CONFIG_SERIAL2) |
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#define UART_NR S3C24X0_UART1 |
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#elif defined(CONFIG_SERIAL3) |
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#define UART_NR S3C24X0_UART2 |
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#else |
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#error "Bad: you didn't configure serial ..." |
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#endif |
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#include <asm/io.h> |
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#include <serial.h> |
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/* Multi serial device functions */ |
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#define DECLARE_S3C_SERIAL_FUNCTIONS(port) \ |
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int s3serial##port##_init(void) \
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{ \
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return serial_init_dev(port); \
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} \
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void s3serial##port##_setbrg(void) \
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{ \
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serial_setbrg_dev(port); \
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} \
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int s3serial##port##_getc(void) \
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{ \
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return serial_getc_dev(port); \
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} \
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int s3serial##port##_tstc(void) \
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{ \
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return serial_tstc_dev(port); \
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} \
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void s3serial##port##_putc(const char c) \
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{ \
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serial_putc_dev(port, c); \
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} \
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void s3serial##port##_puts(const char *s) \
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{ \
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serial_puts_dev(port, s); \
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} |
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#define INIT_S3C_SERIAL_STRUCTURE(port, __name) { \ |
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.name = __name, \
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.start = s3serial##port##_init, \
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.stop = NULL, \
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.setbrg = s3serial##port##_setbrg, \
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.getc = s3serial##port##_getc, \
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.tstc = s3serial##port##_tstc, \
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.putc = s3serial##port##_putc, \
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.puts = s3serial##port##_puts, \
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} |
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static void _serial_setbrg(const int dev_index) |
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{ |
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struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); |
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unsigned int reg = 0; |
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int i; |
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/* value is calculated so : (int)(PCLK/16./baudrate) -1 */ |
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reg = get_PCLK() / (16 * gd->baudrate) - 1; |
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writel(reg, &uart->ubrdiv); |
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for (i = 0; i < 100; i++) |
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/* Delay */ ; |
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} |
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static inline void serial_setbrg_dev(unsigned int dev_index) |
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{ |
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_serial_setbrg(dev_index); |
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} |
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/* Initialise the serial port. The settings are always 8 data bits, no parity,
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* 1 stop bit, no start bits. |
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*/ |
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static int serial_init_dev(const int dev_index) |
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{ |
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struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); |
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/* FIFO enable, Tx/Rx FIFO clear */ |
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writel(0x07, &uart->ufcon); |
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writel(0x0, &uart->umcon); |
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/* Normal,No parity,1 stop,8 bit */ |
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writel(0x3, &uart->ulcon); |
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/*
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* tx=level,rx=edge,disable timeout int.,enable rx error int., |
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* normal,interrupt or polling |
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*/ |
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writel(0x245, &uart->ucon); |
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_serial_setbrg(dev_index); |
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return (0); |
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} |
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/*
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* Read a single byte from the serial port. Returns 1 on success, 0 |
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* otherwise. When the function is succesfull, the character read is |
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* written into its argument c. |
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*/ |
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static int _serial_getc(const int dev_index) |
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{ |
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struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); |
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while (!(readl(&uart->utrstat) & 0x1)) |
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/* wait for character to arrive */ ; |
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return readb(&uart->urxh) & 0xff; |
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} |
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static inline int serial_getc_dev(unsigned int dev_index) |
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{ |
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return _serial_getc(dev_index); |
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} |
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/*
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* Output a single byte to the serial port. |
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*/ |
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static void _serial_putc(const char c, const int dev_index) |
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{ |
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struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); |
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/* If \n, also do \r */ |
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if (c == '\n') |
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serial_putc('\r'); |
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while (!(readl(&uart->utrstat) & 0x2)) |
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/* wait for room in the tx FIFO */ ; |
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writeb(c, &uart->utxh); |
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} |
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static inline void serial_putc_dev(unsigned int dev_index, const char c) |
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{ |
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_serial_putc(c, dev_index); |
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} |
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/*
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* Test whether a character is in the RX buffer |
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*/ |
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static int _serial_tstc(const int dev_index) |
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{ |
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struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); |
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return readl(&uart->utrstat) & 0x1; |
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} |
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static inline int serial_tstc_dev(unsigned int dev_index) |
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{ |
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return _serial_tstc(dev_index); |
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} |
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static void _serial_puts(const char *s, const int dev_index) |
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{ |
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while (*s) { |
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_serial_putc(*s++, dev_index); |
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} |
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} |
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static inline void serial_puts_dev(int dev_index, const char *s) |
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{ |
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_serial_puts(s, dev_index); |
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} |
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DECLARE_S3C_SERIAL_FUNCTIONS(0); |
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struct serial_device s3c24xx_serial0_device = |
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INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0"); |
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DECLARE_S3C_SERIAL_FUNCTIONS(1); |
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struct serial_device s3c24xx_serial1_device = |
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INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1"); |
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DECLARE_S3C_SERIAL_FUNCTIONS(2); |
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struct serial_device s3c24xx_serial2_device = |
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INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2"); |
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__weak struct serial_device *default_serial_console(void) |
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{ |
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#if defined(CONFIG_SERIAL1) |
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return &s3c24xx_serial0_device; |
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#elif defined(CONFIG_SERIAL2) |
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return &s3c24xx_serial1_device; |
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#elif defined(CONFIG_SERIAL3) |
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return &s3c24xx_serial2_device; |
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#else |
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#error "CONFIG_SERIAL? missing." |
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#endif |
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} |
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void s3c24xx_serial_initialize(void) |
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{ |
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serial_register(&s3c24xx_serial0_device); |
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serial_register(&s3c24xx_serial1_device); |
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serial_register(&s3c24xx_serial2_device); |
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} |
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