X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fserial%2Fserial_s3c24x0.c;h=c07f4c9b4737f5a64ea59e1a570e77c9850e0f7f;hb=cc49da249cf2f380d2fed5571fad65ce6494fc95;hp=1b1b7a612e879162d45c109f9a480623502f30bb;hpb=3405f38a15eec5092ac47efe0829f10a24491c6e;p=u-boot diff --git a/drivers/serial/serial_s3c24x0.c b/drivers/serial/serial_s3c24x0.c index 1b1b7a612e..c07f4c9b47 100644 --- a/drivers/serial/serial_s3c24x0.c +++ b/drivers/serial/serial_s3c24x0.c @@ -1,29 +1,13 @@ /* * (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 + * Gary Jennejohn, DENX Software Engineering, * + * SPDX-License-Identifier: GPL-2.0+ */ #include -#if defined(CONFIG_S3C2400) || defined(CONFIG_TRAB) -#include -#elif defined(CONFIG_S3C2410) -#include -#endif +#include +#include DECLARE_GLOBAL_DATA_PTR; @@ -31,160 +15,149 @@ 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 #error "Bad: you didn't configure serial ..." #endif -#if defined(CONFIG_SERIAL_MULTI) +#include #include /* Multi serial device functions */ #define DECLARE_S3C_SERIAL_FUNCTIONS(port) \ - int s3serial##port##_init (void) {\ - return serial_init_dev(port);}\ - void s3serial##port##_setbrg (void) {\ - serial_setbrg_dev(port);}\ - int s3serial##port##_getc (void) {\ - return serial_getc_dev(port);}\ - int s3serial##port##_tstc (void) {\ - return serial_tstc_dev(port);}\ - void s3serial##port##_putc (const char c) {\ - serial_putc_dev(port, c);}\ - void s3serial##port##_puts (const char *s) {\ - serial_puts_dev(port, s);} - -#define INIT_S3C_SERIAL_STRUCTURE(port,name,bus) {\ - name,\ - bus,\ - s3serial##port##_init,\ - s3serial##port##_setbrg,\ - s3serial##port##_getc,\ - s3serial##port##_tstc,\ - s3serial##port##_putc,\ - s3serial##port##_puts, } - -#endif /* CONFIG_SERIAL_MULTI */ + int s3serial##port##_init(void) \ + { \ + return serial_init_dev(port); \ + } \ + void s3serial##port##_setbrg(void) \ + { \ + serial_setbrg_dev(port); \ + } \ + int s3serial##port##_getc(void) \ + { \ + return serial_getc_dev(port); \ + } \ + int s3serial##port##_tstc(void) \ + { \ + return serial_tstc_dev(port); \ + } \ + void s3serial##port##_putc(const char c) \ + { \ + serial_putc_dev(port, c); \ + } \ + void s3serial##port##_puts(const char *s) \ + { \ + serial_puts_dev(port, s); \ + } + +#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, \ +} + +#ifdef CONFIG_HWFLOW +static int hwflow; +#endif void _serial_setbrg(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); unsigned int reg = 0; int i; /* value is calculated so : (int)(PCLK/16./baudrate) -1 */ reg = get_PCLK() / (16 * gd->baudrate) - 1; - uart->UBRDIV = reg; - for (i = 0; i < 100; i++); + 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) + +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. */ static int serial_init_dev(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(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 */ - uart->UFCON = 0x07; - uart->UMCON = 0x0; + writel(0x07, &uart->ufcon); + writel(0x0, &uart->umcon); /* Normal,No parity,1 stop,8 bit */ - uart->ULCON = 0x3; + writel(0x3, &uart->ulcon); /* * tx=level,rx=edge,disable timeout int.,enable rx error int., * normal,interrupt or polling */ - uart->UCON = 0x245; + writel(0x245, &uart->ucon); #ifdef CONFIG_HWFLOW - uart->UMCON = 0x1; /* 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) - uart->UMCON = 0x10; + 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) +int _serial_getc(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); - /* wait for character to arrive */ - while (!(uart->UTRSTAT & 0x1)); + while (!(readl(&uart->utrstat) & 0x1)) + /* wait for character to arrive */ ; - return 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 -static int hwflow = 0; /* turned off by default */ int hwflow_onoff(int on) { - switch(on) { + switch (on) { case 0: default: - break; /* return current */ + break; /* return current */ case 1: - hwflow = 1; /* turn on */ + hwflow = 1; /* turn on */ break; case -1: - hwflow = 0; /* turn off */ + hwflow = 0; /* turn off */ break; } return hwflow; @@ -208,93 +181,87 @@ void enable_putc(void) /* * Output a single byte to the serial port. */ -void _serial_putc (const char c, const int dev_index) +void _serial_putc(const char c, const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); #ifdef CONFIG_MODEM_SUPPORT if (be_quiet) return; #endif - /* wait for room in the tx FIFO */ - while (!(uart->UTRSTAT & 0x2)); + while (!(readl(&uart->utrstat) & 0x2)) + /* wait for room in the tx FIFO */ ; #ifdef CONFIG_HWFLOW - /* Wait for CTS up */ - while(hwflow && !(uart->UMSTAT & 0x1)) - ; + while (hwflow && !(readl(&uart->umstat) & 0x1)) + /* Wait for CTS up */ ; #endif - uart->UTXH = c; + writeb(c, &uart->utxh); /* If \n, also do \r */ if (c == '\n') - serial_putc ('\r'); + 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) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); - return uart->UTRSTAT & 0x1; + return readl(&uart->utrstat) & 0x1; } -#if defined(CONFIG_SERIAL_MULTI) -static inline int -serial_tstc_dev(unsigned int dev_index) + +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) { while (*s) { - _serial_putc (*s++, dev_index); + _serial_putc(*s++, dev_index); } } -#if defined(CONFIG_SERIAL_MULTI) -static inline void -serial_puts_dev(int dev_index, const char *s) + +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"); +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 +} -#endif /* CONFIG_SERIAL_MULTI */ +void s3c24xx_serial_initialize(void) +{ + serial_register(&s3c24xx_serial0_device); + serial_register(&s3c24xx_serial1_device); + serial_register(&s3c24xx_serial2_device); +}