X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_s3c24x0.c;h=7afc5044a8c70f77607a5e1d351b83b2681b012b;hb=bf272cb82bf1181b6546910e53650b0cd50c8a55;hp=8a3e30209cfae7857d3ad59925031480f8e4c791;hpb=c88d6ab19ffab06f372b15c290bdf5d6f1ebfe9a;p=karo-tx-uboot.git diff --git a/drivers/serial/serial_s3c24x0.c b/drivers/serial/serial_s3c24x0.c index 8a3e30209c..7afc5044a8 100644 --- a/drivers/serial/serial_s3c24x0.c +++ b/drivers/serial/serial_s3c24x0.c @@ -2,23 +2,11 @@ * (C) Copyright 2002 * Gary Jennejohn, DENX Software Engineering, * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * + * SPDX-License-Identifier: GPL-2.0+ */ #include +#include #include DECLARE_GLOBAL_DATA_PTR; @@ -27,15 +15,9 @@ DECLARE_GLOBAL_DATA_PTR; #define UART_NR S3C24X0_UART0 #elif defined(CONFIG_SERIAL2) -# if defined(CONFIG_TRAB) -# error "TRAB supports only CONFIG_SERIAL1" -# endif #define UART_NR S3C24X0_UART1 #elif defined(CONFIG_SERIAL3) -# if defined(CONFIG_TRAB) -# error "TRAB supports only CONFIG_SERIAL1" -# endif #define UART_NR S3C24X0_UART2 #else @@ -43,8 +25,6 @@ DECLARE_GLOBAL_DATA_PTR; #endif #include - -#if defined(CONFIG_SERIAL_MULTI) #include /* Multi serial device functions */ @@ -74,25 +54,22 @@ DECLARE_GLOBAL_DATA_PTR; serial_puts_dev(port, s); \ } -#define INIT_S3C_SERIAL_STRUCTURE(port, name, bus) { \ - name, \ - bus, \ - s3serial##port##_init, \ - NULL,\ - s3serial##port##_setbrg, \ - s3serial##port##_getc, \ - s3serial##port##_tstc, \ - s3serial##port##_putc, \ - s3serial##port##_puts, \ +#define INIT_S3C_SERIAL_STRUCTURE(port, __name) { \ + .name = __name, \ + .start = s3serial##port##_init, \ + .stop = NULL, \ + .setbrg = s3serial##port##_setbrg, \ + .getc = s3serial##port##_getc, \ + .tstc = s3serial##port##_tstc, \ + .putc = s3serial##port##_putc, \ + .puts = s3serial##port##_puts, \ } -#endif /* CONFIG_SERIAL_MULTI */ - #ifdef CONFIG_HWFLOW static int hwflow; #endif -void _serial_setbrg(const int dev_index) +static void _serial_setbrg(const int dev_index) { struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); unsigned int reg = 0; @@ -101,23 +78,15 @@ void _serial_setbrg(const int dev_index) /* value is calculated so : (int)(PCLK/16./baudrate) -1 */ reg = get_PCLK() / (16 * gd->baudrate) - 1; - writel(reg, &uart->UBRDIV); + writel(reg, &uart->ubrdiv); for (i = 0; i < 100; i++) /* Delay */ ; } -#if defined(CONFIG_SERIAL_MULTI) static inline void serial_setbrg_dev(unsigned int dev_index) { _serial_setbrg(dev_index); } -#else -void serial_setbrg(void) -{ - _serial_setbrg(UART_NR); -} -#endif - /* Initialise the serial port. The settings are always 8 data bits, no parity, * 1 stop bit, no start bits. @@ -131,68 +100,51 @@ static int serial_init_dev(const int dev_index) #endif /* FIFO enable, Tx/Rx FIFO clear */ - writel(0x07, &uart->UFCON); - writel(0x0, &uart->UMCON); + writel(0x07, &uart->ufcon); + writel(0x0, &uart->umcon); /* Normal,No parity,1 stop,8 bit */ - writel(0x3, &uart->ULCON); + writel(0x3, &uart->ulcon); /* * tx=level,rx=edge,disable timeout int.,enable rx error int., * normal,interrupt or polling */ - writel(0x245, &uart->UCON); + writel(0x245, &uart->ucon); #ifdef CONFIG_HWFLOW - writel(0x1, &uart->UMCON); /* RTS up */ + writel(0x1, &uart->umcon); /* rts up */ #endif /* FIXME: This is sooooooooooooooooooo ugly */ #if defined(CONFIG_ARCH_GTA02_v1) || defined(CONFIG_ARCH_GTA02_v2) /* we need auto hw flow control on the gsm and gps port */ if (dev_index == 0 || dev_index == 1) - writel(0x10, &uart->UMCON); + writel(0x10, &uart->umcon); #endif _serial_setbrg(dev_index); return (0); } -#if !defined(CONFIG_SERIAL_MULTI) -/* Initialise the serial port. The settings are always 8 data bits, no parity, - * 1 stop bit, no start bits. - */ -int serial_init(void) -{ - return serial_init_dev(UART_NR); -} -#endif - /* * Read a single byte from the serial port. Returns 1 on success, 0 * otherwise. When the function is succesfull, the character read is * written into its argument c. */ -int _serial_getc(const int dev_index) +static int _serial_getc(const int dev_index) { struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); - while (!(readl(&uart->UTRSTAT) & 0x1)) + while (!(readl(&uart->utrstat) & 0x1)) /* wait for character to arrive */ ; - return readb(&uart->URXH) & 0xff; + return readb(&uart->urxh) & 0xff; } -#if defined(CONFIG_SERIAL_MULTI) static inline int serial_getc_dev(unsigned int dev_index) { return _serial_getc(dev_index); } -#else -int serial_getc(void) -{ - return _serial_getc(UART_NR); -} -#endif #ifdef CONFIG_HWFLOW int hwflow_onoff(int on) @@ -229,7 +181,7 @@ void enable_putc(void) /* * Output a single byte to the serial port. */ -void _serial_putc(const char c, const int dev_index) +static void _serial_putc(const char c, const int dev_index) { struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); #ifdef CONFIG_MODEM_SUPPORT @@ -237,83 +189,79 @@ void _serial_putc(const char c, const int dev_index) return; #endif - while (!(readl(&uart->UTRSTAT) & 0x2)) + while (!(readl(&uart->utrstat) & 0x2)) /* wait for room in the tx FIFO */ ; #ifdef CONFIG_HWFLOW - while (hwflow && !(readl(&uart->UMSTAT) & 0x1)) + while (hwflow && !(readl(&uart->umstat) & 0x1)) /* Wait for CTS up */ ; #endif - writeb(c, &uart->UTXH); + writeb(c, &uart->utxh); /* If \n, also do \r */ if (c == '\n') serial_putc('\r'); } -#if defined(CONFIG_SERIAL_MULTI) static inline void serial_putc_dev(unsigned int dev_index, const char c) { _serial_putc(c, dev_index); } -#else -void serial_putc(const char c) -{ - _serial_putc(c, UART_NR); -} -#endif - /* * Test whether a character is in the RX buffer */ -int _serial_tstc(const int dev_index) +static int _serial_tstc(const int dev_index) { struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); - return readl(&uart->UTRSTAT) & 0x1; + return readl(&uart->utrstat) & 0x1; } -#if defined(CONFIG_SERIAL_MULTI) static inline int serial_tstc_dev(unsigned int dev_index) { return _serial_tstc(dev_index); } -#else -int serial_tstc(void) -{ - return _serial_tstc(UART_NR); -} -#endif -void _serial_puts(const char *s, const int dev_index) +static void _serial_puts(const char *s, const int dev_index) { while (*s) { _serial_putc(*s++, dev_index); } } -#if defined(CONFIG_SERIAL_MULTI) static inline void serial_puts_dev(int dev_index, const char *s) { _serial_puts(s, dev_index); } -#else -void serial_puts(const char *s) -{ - _serial_puts(s, UART_NR); -} -#endif -#if defined(CONFIG_SERIAL_MULTI) DECLARE_S3C_SERIAL_FUNCTIONS(0); struct serial_device s3c24xx_serial0_device = -INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0", "S3UART1"); +INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0"); DECLARE_S3C_SERIAL_FUNCTIONS(1); struct serial_device s3c24xx_serial1_device = -INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1", "S3UART2"); +INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1"); DECLARE_S3C_SERIAL_FUNCTIONS(2); struct serial_device s3c24xx_serial2_device = -INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2", "S3UART3"); -#endif /* CONFIG_SERIAL_MULTI */ +INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2"); + +__weak struct serial_device *default_serial_console(void) +{ +#if defined(CONFIG_SERIAL1) + return &s3c24xx_serial0_device; +#elif defined(CONFIG_SERIAL2) + return &s3c24xx_serial1_device; +#elif defined(CONFIG_SERIAL3) + return &s3c24xx_serial2_device; +#else +#error "CONFIG_SERIAL? missing." +#endif +} + +void s3c24xx_serial_initialize(void) +{ + serial_register(&s3c24xx_serial0_device); + serial_register(&s3c24xx_serial1_device); + serial_register(&s3c24xx_serial2_device); +}