X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_s3c24x0.c;h=0f0878a0510de1ccff4132c9ded65b355b9a4386;hb=99785de83e8198b5d5468453d49a8735b048983d;hp=f42b15e45ecc80f8c70c06e9a3471fa1b1694cb0;hpb=17dd883c5b76bdade0f7a48f2eb02d918a5ebef9;p=u-boot diff --git a/drivers/serial/serial_s3c24x0.c b/drivers/serial/serial_s3c24x0.c index f42b15e45e..0f0878a051 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 +54,18 @@ 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; @@ -106,18 +79,10 @@ void _serial_setbrg(const int dev_index) /* 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. @@ -126,10 +91,6 @@ static int serial_init_dev(const int dev_index) { struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); -#ifdef CONFIG_HWFLOW - hwflow = 0; /* turned off by default */ -#endif - /* FIFO enable, Tx/Rx FIFO clear */ writel(0x07, &uart->ufcon); writel(0x0, &uart->umcon); @@ -142,37 +103,17 @@ static int serial_init_dev(const int dev_index) */ writel(0x245, &uart->ucon); -#ifdef CONFIG_HWFLOW - 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); -#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); @@ -182,138 +123,86 @@ int _serial_getc(const int dev_index) 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) -{ - switch (on) { - case 0: - default: - break; /* return current */ - case 1: - hwflow = 1; /* turn on */ - break; - case -1: - hwflow = 0; /* turn off */ - break; - } - return hwflow; -} -#endif - -#ifdef CONFIG_MODEM_SUPPORT -static int be_quiet = 0; -void disable_putc(void) -{ - be_quiet = 1; -} - -void enable_putc(void) -{ - be_quiet = 0; -} -#endif - /* * 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 - if (be_quiet) - return; -#endif + + /* If \n, also do \r */ + if (c == '\n') + serial_putc('\r'); while (!(readl(&uart->utrstat) & 0x2)) /* wait for room in the tx FIFO */ ; -#ifdef CONFIG_HWFLOW - while (hwflow && !(readl(&uart->umstat) & 0x1)) - /* Wait for CTS up */ ; -#endif - 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; } -#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); +}