diff options
Diffstat (limited to 'drivers/serial/serial.c')
| -rw-r--r-- | drivers/serial/serial.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c deleted file mode 100644 index 00ad97c35..000000000 --- a/drivers/serial/serial.c +++ /dev/null @@ -1,359 +0,0 @@ -/* - * (C) Copyright 2000 - * Rob Taylor, Flying Pig Systems. robt@flyingpig.com. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 - */ - -#include <common.h> -#include <linux/compiler.h> - -#include <ns16550.h> -#ifdef CONFIG_NS87308 -#include <ns87308.h> -#endif - -#if defined (CONFIG_SERIAL_MULTI) -#include <serial.h> -#endif - -DECLARE_GLOBAL_DATA_PTR; - -#if !defined(CONFIG_CONS_INDEX) -#if defined (CONFIG_SERIAL_MULTI) -/* with CONFIG_SERIAL_MULTI we might have no console - * on these devices - */ -#else -#error "No console index specified." -#endif /* CONFIG_SERIAL_MULTI */ -#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4) -#error "Invalid console index value." -#endif - -#if CONFIG_CONS_INDEX == 1 && !defined(CONFIG_SYS_NS16550_COM1) -#error "Console port 1 defined but not configured." -#elif CONFIG_CONS_INDEX == 2 && !defined(CONFIG_SYS_NS16550_COM2) -#error "Console port 2 defined but not configured." -#elif CONFIG_CONS_INDEX == 3 && !defined(CONFIG_SYS_NS16550_COM3) -#error "Console port 3 defined but not configured." -#elif CONFIG_CONS_INDEX == 4 && !defined(CONFIG_SYS_NS16550_COM4) -#error "Console port 4 defined but not configured." -#endif - -/* Note: The port number specified in the functions is 1 based. - * the array is 0 based. - */ -static NS16550_t serial_ports[4] = { -#ifdef CONFIG_SYS_NS16550_COM1 - (NS16550_t)CONFIG_SYS_NS16550_COM1, -#else - NULL, -#endif -#ifdef CONFIG_SYS_NS16550_COM2 - (NS16550_t)CONFIG_SYS_NS16550_COM2, -#else - NULL, -#endif -#ifdef CONFIG_SYS_NS16550_COM3 - (NS16550_t)CONFIG_SYS_NS16550_COM3, -#else - NULL, -#endif -#ifdef CONFIG_SYS_NS16550_COM4 - (NS16550_t)CONFIG_SYS_NS16550_COM4 -#else - NULL -#endif -}; - -#define PORT serial_ports[port-1] - -#if defined(CONFIG_SERIAL_MULTI) - -/* Multi serial device functions */ -#define DECLARE_ESERIAL_FUNCTIONS(port) \ - int eserial##port##_init (void) {\ - int clock_divisor; \ - clock_divisor = calc_divisor(serial_ports[port-1]); \ - NS16550_init(serial_ports[port-1], clock_divisor); \ - return(0);}\ - void eserial##port##_setbrg (void) {\ - serial_setbrg_dev(port);}\ - int eserial##port##_getc (void) {\ - return serial_getc_dev(port);}\ - int eserial##port##_tstc (void) {\ - return serial_tstc_dev(port);}\ - void eserial##port##_putc (const char c) {\ - serial_putc_dev(port, c);}\ - void eserial##port##_puts (const char *s) {\ - serial_puts_dev(port, s);} - -/* Serial device descriptor */ -#define INIT_ESERIAL_STRUCTURE(port, __name) { \ - .name = __name, \ - .start = eserial##port##_init, \ - .stop = NULL, \ - .setbrg = eserial##port##_setbrg, \ - .getc = eserial##port##_getc, \ - .tstc = eserial##port##_tstc, \ - .putc = eserial##port##_putc, \ - .puts = eserial##port##_puts, \ -} - -#endif /* CONFIG_SERIAL_MULTI */ - -static int calc_divisor (NS16550_t port) -{ -#ifdef CONFIG_OMAP1510 - /* If can't cleanly clock 115200 set div to 1 */ - if ((CONFIG_SYS_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) { - port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */ - return (1); /* return 1 for base divisor */ - } - port->osc_12m_sel = 0; /* clear if previsouly set */ -#endif -#ifdef CONFIG_OMAP1610 - /* If can't cleanly clock 115200 set div to 1 */ - if ((CONFIG_SYS_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) { - return (26); /* return 26 for base divisor */ - } -#endif - -#ifdef CONFIG_APTIX -#define MODE_X_DIV 13 -#else -#define MODE_X_DIV 16 -#endif - - /* Compute divisor value. Normally, we should simply return: - * CONFIG_SYS_NS16550_CLK) / MODE_X_DIV / gd->baudrate - * but we need to round that value by adding 0.5. - * Rounding is especially important at high baud rates. - */ - return (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) / - (MODE_X_DIV * gd->baudrate); -} - -#if !defined(CONFIG_SERIAL_MULTI) -int serial_init (void) -{ - int clock_divisor; - -#ifdef CONFIG_NS87308 - initialise_ns87308(); -#endif - -#ifdef CONFIG_SYS_NS16550_COM1 - clock_divisor = calc_divisor(serial_ports[0]); - NS16550_init(serial_ports[0], clock_divisor); -#endif -#ifdef CONFIG_SYS_NS16550_COM2 - clock_divisor = calc_divisor(serial_ports[1]); - NS16550_init(serial_ports[1], clock_divisor); -#endif -#ifdef CONFIG_SYS_NS16550_COM3 - clock_divisor = calc_divisor(serial_ports[2]); - NS16550_init(serial_ports[2], clock_divisor); -#endif -#ifdef CONFIG_SYS_NS16550_COM4 - clock_divisor = calc_divisor(serial_ports[3]); - NS16550_init(serial_ports[3], clock_divisor); -#endif - - return (0); -} -#endif - -void -_serial_putc(const char c,const int port) -{ - if (c == '\n') - NS16550_putc(PORT, '\r'); - - NS16550_putc(PORT, c); -} - -void -_serial_putc_raw(const char c,const int port) -{ - NS16550_putc(PORT, c); -} - -void -_serial_puts (const char *s,const int port) -{ - while (*s) { - _serial_putc (*s++,port); - } -} - - -int -_serial_getc(const int port) -{ - return NS16550_getc(PORT); -} - -int -_serial_tstc(const int port) -{ - return NS16550_tstc(PORT); -} - -void -_serial_setbrg (const int port) -{ - int clock_divisor; - - clock_divisor = calc_divisor(PORT); - NS16550_reinit(PORT, clock_divisor); -} - -#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,CONFIG_CONS_INDEX); -} -#endif - -#if defined(CONFIG_SERIAL_MULTI) -static inline void -serial_putc_raw_dev(unsigned int dev_index,const char c) -{ - _serial_putc_raw(c,dev_index); -} -#else -void -serial_putc_raw(const char c) -{ - _serial_putc_raw(c,CONFIG_CONS_INDEX); -} -#endif - -#if defined(CONFIG_SERIAL_MULTI) -static inline void -serial_puts_dev(unsigned int dev_index,const char *s) -{ - _serial_puts(s,dev_index); -} -#else -void -serial_puts(const char *s) -{ - _serial_puts(s,CONFIG_CONS_INDEX); -} -#endif - -#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(CONFIG_CONS_INDEX); -} -#endif - -#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(CONFIG_CONS_INDEX); -} -#endif - -#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(CONFIG_CONS_INDEX); -} -#endif - -#if defined(CONFIG_SERIAL_MULTI) - -DECLARE_ESERIAL_FUNCTIONS(1); -struct serial_device eserial1_device = - INIT_ESERIAL_STRUCTURE(1, "eserial0"); -DECLARE_ESERIAL_FUNCTIONS(2); -struct serial_device eserial2_device = - INIT_ESERIAL_STRUCTURE(2, "eserial1"); -DECLARE_ESERIAL_FUNCTIONS(3); -struct serial_device eserial3_device = - INIT_ESERIAL_STRUCTURE(3, "eserial2"); -DECLARE_ESERIAL_FUNCTIONS(4); -struct serial_device eserial4_device = - INIT_ESERIAL_STRUCTURE(4, "eserial3"); - -__weak struct serial_device *default_serial_console(void) -{ -#if CONFIG_CONS_INDEX == 1 - return &eserial1_device; -#elif CONFIG_CONS_INDEX == 2 - return &eserial2_device; -#elif CONFIG_CONS_INDEX == 3 - return &eserial3_device; -#elif CONFIG_CONS_INDEX == 4 - return &eserial4_device; -#else -#error "Bad CONFIG_CONS_INDEX." -#endif -} - -void ns16550_serial_initialize(void) -{ -#if defined(CONFIG_SYS_NS16550_COM1) - serial_register(&eserial1_device); -#endif -#if defined(CONFIG_SYS_NS16550_COM2) - serial_register(&eserial2_device); -#endif -#if defined(CONFIG_SYS_NS16550_COM3) - serial_register(&eserial3_device); -#endif -#if defined(CONFIG_SYS_NS16550_COM4) - serial_register(&eserial4_device); -#endif -} - -#endif /* CONFIG_SERIAL_MULTI */ |