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wdenk78f66222002-08-27 10:27:51 +00001/*
2 * (C) Copyright 2000
3 * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
Mike Frysinger6c768ca2011-04-29 18:03:29 +000025#include <linux/compiler.h>
wdenk78f66222002-08-27 10:27:51 +000026
wdenk78f66222002-08-27 10:27:51 +000027#include <ns16550.h>
Jean-Christophe PLAGNIOL-VILLARD55d6d2d2008-08-13 01:40:40 +020028#ifdef CONFIG_NS87308
wdenk78f66222002-08-27 10:27:51 +000029#include <ns87308.h>
30#endif
31
Wolfgang Denk0fd30252006-08-30 23:02:10 +020032#include <serial.h>
Wolfgang Denk0fd30252006-08-30 23:02:10 +020033
Scott Wood48cbc3a2012-10-16 15:43:15 -050034#ifndef CONFIG_NS16550_MIN_FUNCTIONS
35
Wolfgang Denkd87080b2006-03-31 18:32:53 +020036DECLARE_GLOBAL_DATA_PTR;
37
wdenk756f5862005-04-03 15:51:42 +000038#if !defined(CONFIG_CONS_INDEX)
Andrew Bradford96708a02012-10-25 08:21:31 -040039#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 6)
wdenk756f5862005-04-03 15:51:42 +000040#error "Invalid console index value."
wdenk78f66222002-08-27 10:27:51 +000041#endif
42
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020043#if CONFIG_CONS_INDEX == 1 && !defined(CONFIG_SYS_NS16550_COM1)
wdenk756f5862005-04-03 15:51:42 +000044#error "Console port 1 defined but not configured."
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020045#elif CONFIG_CONS_INDEX == 2 && !defined(CONFIG_SYS_NS16550_COM2)
wdenk756f5862005-04-03 15:51:42 +000046#error "Console port 2 defined but not configured."
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020047#elif CONFIG_CONS_INDEX == 3 && !defined(CONFIG_SYS_NS16550_COM3)
wdenk756f5862005-04-03 15:51:42 +000048#error "Console port 3 defined but not configured."
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020049#elif CONFIG_CONS_INDEX == 4 && !defined(CONFIG_SYS_NS16550_COM4)
wdenk756f5862005-04-03 15:51:42 +000050#error "Console port 4 defined but not configured."
Andrew Bradford96708a02012-10-25 08:21:31 -040051#elif CONFIG_CONS_INDEX == 5 && !defined(CONFIG_SYS_NS16550_COM5)
52#error "Console port 5 defined but not configured."
53#elif CONFIG_CONS_INDEX == 6 && !defined(CONFIG_SYS_NS16550_COM6)
54#error "Console port 6 defined but not configured."
wdenk756f5862005-04-03 15:51:42 +000055#endif
56
57/* Note: The port number specified in the functions is 1 based.
58 * the array is 0 based.
59 */
Andrew Bradford96708a02012-10-25 08:21:31 -040060static NS16550_t serial_ports[6] = {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020061#ifdef CONFIG_SYS_NS16550_COM1
62 (NS16550_t)CONFIG_SYS_NS16550_COM1,
wdenk756f5862005-04-03 15:51:42 +000063#else
64 NULL,
65#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020066#ifdef CONFIG_SYS_NS16550_COM2
67 (NS16550_t)CONFIG_SYS_NS16550_COM2,
wdenk756f5862005-04-03 15:51:42 +000068#else
69 NULL,
70#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020071#ifdef CONFIG_SYS_NS16550_COM3
72 (NS16550_t)CONFIG_SYS_NS16550_COM3,
wdenk756f5862005-04-03 15:51:42 +000073#else
74 NULL,
75#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020076#ifdef CONFIG_SYS_NS16550_COM4
Andrew Bradford96708a02012-10-25 08:21:31 -040077 (NS16550_t)CONFIG_SYS_NS16550_COM4,
78#else
79 NULL,
80#endif
81#ifdef CONFIG_SYS_NS16550_COM5
82 (NS16550_t)CONFIG_SYS_NS16550_COM5,
83#else
84 NULL,
85#endif
86#ifdef CONFIG_SYS_NS16550_COM6
87 (NS16550_t)CONFIG_SYS_NS16550_COM6
wdenk756f5862005-04-03 15:51:42 +000088#else
89 NULL
90#endif
91};
92
93#define PORT serial_ports[port-1]
Wolfgang Denk0fd30252006-08-30 23:02:10 +020094
Wolfgang Denk0fd30252006-08-30 23:02:10 +020095/* Multi serial device functions */
96#define DECLARE_ESERIAL_FUNCTIONS(port) \
Kim Phillipsac63f2a2012-10-29 13:34:47 +000097 static int eserial##port##_init(void) \
98 { \
99 int clock_divisor; \
100 clock_divisor = calc_divisor(serial_ports[port-1]); \
101 NS16550_init(serial_ports[port-1], clock_divisor); \
102 return 0 ; \
103 } \
104 static void eserial##port##_setbrg(void) \
105 { \
106 serial_setbrg_dev(port); \
107 } \
108 static int eserial##port##_getc(void) \
109 { \
110 return serial_getc_dev(port); \
111 } \
112 static int eserial##port##_tstc(void) \
113 { \
114 return serial_tstc_dev(port); \
115 } \
116 static void eserial##port##_putc(const char c) \
117 { \
118 serial_putc_dev(port, c); \
119 } \
120 static void eserial##port##_puts(const char *s) \
121 { \
122 serial_puts_dev(port, s); \
123 }
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200124
125/* Serial device descriptor */
Marek Vasut90bad892012-09-09 18:48:28 +0200126#define INIT_ESERIAL_STRUCTURE(port, __name) { \
127 .name = __name, \
128 .start = eserial##port##_init, \
129 .stop = NULL, \
130 .setbrg = eserial##port##_setbrg, \
131 .getc = eserial##port##_getc, \
132 .tstc = eserial##port##_tstc, \
133 .putc = eserial##port##_putc, \
134 .puts = eserial##port##_puts, \
135}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200136
wdenk756f5862005-04-03 15:51:42 +0000137static int calc_divisor (NS16550_t port)
wdenk78f66222002-08-27 10:27:51 +0000138{
wdenk2e5983d2003-07-15 20:04:06 +0000139#ifdef CONFIG_OMAP1510
140 /* If can't cleanly clock 115200 set div to 1 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200141 if ((CONFIG_SYS_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
wdenk756f5862005-04-03 15:51:42 +0000142 port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
wdenk2e5983d2003-07-15 20:04:06 +0000143 return (1); /* return 1 for base divisor */
144 }
wdenk756f5862005-04-03 15:51:42 +0000145 port->osc_12m_sel = 0; /* clear if previsouly set */
wdenk2e5983d2003-07-15 20:04:06 +0000146#endif
wdenk6f213472003-08-29 22:00:43 +0000147#ifdef CONFIG_OMAP1610
148 /* If can't cleanly clock 115200 set div to 1 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200149 if ((CONFIG_SYS_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
wdenk6f213472003-08-29 22:00:43 +0000150 return (26); /* return 26 for base divisor */
151 }
152#endif
wdenk8ed96042005-01-09 23:16:25 +0000153
154#ifdef CONFIG_APTIX
155#define MODE_X_DIV 13
156#else
157#define MODE_X_DIV 16
158#endif
wdenk8ed96042005-01-09 23:16:25 +0000159
Hugo Villeneuve89134ea2008-07-08 14:54:58 -0400160 /* Compute divisor value. Normally, we should simply return:
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200161 * CONFIG_SYS_NS16550_CLK) / MODE_X_DIV / gd->baudrate
Hugo Villeneuvebcab74b2008-07-15 11:23:02 -0400162 * but we need to round that value by adding 0.5.
Hugo Villeneuve89134ea2008-07-08 14:54:58 -0400163 * Rounding is especially important at high baud rates.
164 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200165 return (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
Hugo Villeneuvebcab74b2008-07-15 11:23:02 -0400166 (MODE_X_DIV * gd->baudrate);
wdenk2e5983d2003-07-15 20:04:06 +0000167}
wdenk78f66222002-08-27 10:27:51 +0000168
wdenk78f66222002-08-27 10:27:51 +0000169void
wdenk756f5862005-04-03 15:51:42 +0000170_serial_putc(const char c,const int port)
wdenk78f66222002-08-27 10:27:51 +0000171{
172 if (c == '\n')
wdenk756f5862005-04-03 15:51:42 +0000173 NS16550_putc(PORT, '\r');
wdenk78f66222002-08-27 10:27:51 +0000174
wdenk756f5862005-04-03 15:51:42 +0000175 NS16550_putc(PORT, c);
wdenk78f66222002-08-27 10:27:51 +0000176}
177
178void
wdenk756f5862005-04-03 15:51:42 +0000179_serial_putc_raw(const char c,const int port)
180{
181 NS16550_putc(PORT, c);
182}
183
184void
185_serial_puts (const char *s,const int port)
wdenk78f66222002-08-27 10:27:51 +0000186{
187 while (*s) {
wdenk756f5862005-04-03 15:51:42 +0000188 _serial_putc (*s++,port);
wdenk78f66222002-08-27 10:27:51 +0000189 }
190}
191
192
193int
wdenk756f5862005-04-03 15:51:42 +0000194_serial_getc(const int port)
195{
196 return NS16550_getc(PORT);
197}
198
199int
200_serial_tstc(const int port)
201{
202 return NS16550_tstc(PORT);
203}
204
205void
206_serial_setbrg (const int port)
207{
208 int clock_divisor;
209
210 clock_divisor = calc_divisor(PORT);
211 NS16550_reinit(PORT, clock_divisor);
212}
213
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200214static inline void
215serial_putc_dev(unsigned int dev_index,const char c)
216{
217 _serial_putc(c,dev_index);
218}
wdenk756f5862005-04-03 15:51:42 +0000219
Wolfgang Denk511d0c72006-10-09 00:42:01 +0200220static inline void
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200221serial_putc_raw_dev(unsigned int dev_index,const char c)
222{
223 _serial_putc_raw(c,dev_index);
224}
wdenk756f5862005-04-03 15:51:42 +0000225
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200226static inline void
227serial_puts_dev(unsigned int dev_index,const char *s)
228{
229 _serial_puts(s,dev_index);
230}
wdenk756f5862005-04-03 15:51:42 +0000231
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200232static inline int
233serial_getc_dev(unsigned int dev_index)
234{
235 return _serial_getc(dev_index);
236}
wdenk78f66222002-08-27 10:27:51 +0000237
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200238static inline int
239serial_tstc_dev(unsigned int dev_index)
240{
241 return _serial_tstc(dev_index);
242}
wdenk78f66222002-08-27 10:27:51 +0000243
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200244static inline void
245serial_setbrg_dev(unsigned int dev_index)
246{
247 _serial_setbrg(dev_index);
248}
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200249
250DECLARE_ESERIAL_FUNCTIONS(1);
Wolfgang Denk511d0c72006-10-09 00:42:01 +0200251struct serial_device eserial1_device =
Mike Frysinger1c9a5602011-04-29 18:03:31 +0000252 INIT_ESERIAL_STRUCTURE(1, "eserial0");
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200253DECLARE_ESERIAL_FUNCTIONS(2);
254struct serial_device eserial2_device =
Mike Frysinger1c9a5602011-04-29 18:03:31 +0000255 INIT_ESERIAL_STRUCTURE(2, "eserial1");
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200256DECLARE_ESERIAL_FUNCTIONS(3);
257struct serial_device eserial3_device =
Mike Frysinger1c9a5602011-04-29 18:03:31 +0000258 INIT_ESERIAL_STRUCTURE(3, "eserial2");
Wolfgang Denk0fd30252006-08-30 23:02:10 +0200259DECLARE_ESERIAL_FUNCTIONS(4);
260struct serial_device eserial4_device =
Mike Frysinger1c9a5602011-04-29 18:03:31 +0000261 INIT_ESERIAL_STRUCTURE(4, "eserial3");
Andrew Bradford96708a02012-10-25 08:21:31 -0400262DECLARE_ESERIAL_FUNCTIONS(5);
263struct serial_device eserial5_device =
264 INIT_ESERIAL_STRUCTURE(5, "eserial4");
265DECLARE_ESERIAL_FUNCTIONS(6);
266struct serial_device eserial6_device =
267 INIT_ESERIAL_STRUCTURE(6, "eserial5");
Mike Frysinger6c768ca2011-04-29 18:03:29 +0000268
269__weak struct serial_device *default_serial_console(void)
270{
271#if CONFIG_CONS_INDEX == 1
272 return &eserial1_device;
273#elif CONFIG_CONS_INDEX == 2
274 return &eserial2_device;
275#elif CONFIG_CONS_INDEX == 3
276 return &eserial3_device;
277#elif CONFIG_CONS_INDEX == 4
278 return &eserial4_device;
Andrew Bradford96708a02012-10-25 08:21:31 -0400279#elif CONFIG_CONS_INDEX == 5
280 return &eserial5_device;
281#elif CONFIG_CONS_INDEX == 6
282 return &eserial6_device;
Mike Frysinger6c768ca2011-04-29 18:03:29 +0000283#else
284#error "Bad CONFIG_CONS_INDEX."
285#endif
286}
287
Marek Vasutabc0ed82012-09-12 20:02:05 +0200288void ns16550_serial_initialize(void)
289{
290#if defined(CONFIG_SYS_NS16550_COM1)
291 serial_register(&eserial1_device);
292#endif
293#if defined(CONFIG_SYS_NS16550_COM2)
294 serial_register(&eserial2_device);
295#endif
296#if defined(CONFIG_SYS_NS16550_COM3)
297 serial_register(&eserial3_device);
298#endif
299#if defined(CONFIG_SYS_NS16550_COM4)
300 serial_register(&eserial4_device);
301#endif
Andrew Bradford96708a02012-10-25 08:21:31 -0400302#if defined(CONFIG_SYS_NS16550_COM5)
303 serial_register(&eserial5_device);
304#endif
305#if defined(CONFIG_SYS_NS16550_COM6)
306 serial_register(&eserial6_device);
307#endif
Marek Vasutabc0ed82012-09-12 20:02:05 +0200308}
Scott Wood48cbc3a2012-10-16 15:43:15 -0500309
310#endif /* !CONFIG_NS16550_MIN_FUNCTIONS */