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-rw-r--r--drivers/serial/Kconfig15
-rw-r--r--drivers/serial/Makefile1
-rw-r--r--drivers/serial/apbuart.c710
-rw-r--r--drivers/serial/apbuart.h64
-rw-r--r--drivers/serial/mcf.c2
-rw-r--r--drivers/serial/s3c2410.c2
-rw-r--r--drivers/serial/s3c2412.c2
-rw-r--r--drivers/serial/s3c2440.c2
-rw-r--r--drivers/serial/s3c24a0.c2
-rw-r--r--drivers/serial/samsung.c2
-rw-r--r--drivers/serial/samsung.h2
-rw-r--r--drivers/serial/sh-sci.c59
-rw-r--r--drivers/serial/sh-sci.h2
13 files changed, 801 insertions, 64 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index e52257257279..9ff47db0b2ce 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -996,7 +996,7 @@ config SERIAL_IP22_ZILOG_CONSOLE
996 996
997config SERIAL_SH_SCI 997config SERIAL_SH_SCI
998 tristate "SuperH SCI(F) serial port support" 998 tristate "SuperH SCI(F) serial port support"
999 depends on SUPERH || H8300 999 depends on HAVE_CLK && (SUPERH || H8300)
1000 select SERIAL_CORE 1000 select SERIAL_CORE
1001 1001
1002config SERIAL_SH_SCI_NR_UARTS 1002config SERIAL_SH_SCI_NR_UARTS
@@ -1477,4 +1477,17 @@ config SERIAL_BCM63XX_CONSOLE
1477 If you have enabled the serial port on the bcm63xx CPU 1477 If you have enabled the serial port on the bcm63xx CPU
1478 you can make it the console by answering Y to this option. 1478 you can make it the console by answering Y to this option.
1479 1479
1480config SERIAL_GRLIB_GAISLER_APBUART
1481 tristate "GRLIB APBUART serial support"
1482 depends on OF
1483 ---help---
1484 Add support for the GRLIB APBUART serial port.
1485
1486config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
1487 bool "Console on GRLIB APBUART serial port"
1488 depends on SERIAL_GRLIB_GAISLER_APBUART=y
1489 select SERIAL_CORE_CONSOLE
1490 help
1491 Support for running a console on the GRLIB APBUART
1492
1480endmenu 1493endmenu
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index d21d5dd5d048..5548fe7df61d 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -81,3 +81,4 @@ obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
81obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o 81obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
82obj-$(CONFIG_SERIAL_QE) += ucc_uart.o 82obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
83obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o 83obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o
84obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o
diff --git a/drivers/serial/apbuart.c b/drivers/serial/apbuart.c
new file mode 100644
index 000000000000..fe91319b5f65
--- /dev/null
+++ b/drivers/serial/apbuart.c
@@ -0,0 +1,710 @@
1/*
2 * Driver for GRLIB serial ports (APBUART)
3 *
4 * Based on linux/drivers/serial/amba.c
5 *
6 * Copyright (C) 2000 Deep Blue Solutions Ltd.
7 * Copyright (C) 2003 Konrad Eisele <eiselekd@web.de>
8 * Copyright (C) 2006 Daniel Hellstrom <daniel@gaisler.com>, Aeroflex Gaisler AB
9 * Copyright (C) 2008 Gilead Kutnick <kutnickg@zin-tech.com>
10 * Copyright (C) 2009 Kristoffer Glembo <kristoffer@gaisler.com>, Aeroflex Gaisler AB
11 */
12
13#if defined(CONFIG_SERIAL_GRLIB_GAISLER_APBUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
14#define SUPPORT_SYSRQ
15#endif
16
17#include <linux/module.h>
18#include <linux/tty.h>
19#include <linux/ioport.h>
20#include <linux/init.h>
21#include <linux/serial.h>
22#include <linux/console.h>
23#include <linux/sysrq.h>
24#include <linux/kthread.h>
25#include <linux/device.h>
26#include <linux/of.h>
27#include <linux/of_device.h>
28#include <linux/of_platform.h>
29#include <linux/platform_device.h>
30#include <linux/io.h>
31#include <linux/serial_core.h>
32#include <asm/irq.h>
33
34#include "apbuart.h"
35
36#define SERIAL_APBUART_MAJOR TTY_MAJOR
37#define SERIAL_APBUART_MINOR 64
38#define UART_DUMMY_RSR_RX 0x8000 /* for ignore all read */
39
40static void apbuart_tx_chars(struct uart_port *port);
41
42static void apbuart_stop_tx(struct uart_port *port)
43{
44 unsigned int cr;
45
46 cr = UART_GET_CTRL(port);
47 cr &= ~UART_CTRL_TI;
48 UART_PUT_CTRL(port, cr);
49}
50
51static void apbuart_start_tx(struct uart_port *port)
52{
53 unsigned int cr;
54
55 cr = UART_GET_CTRL(port);
56 cr |= UART_CTRL_TI;
57 UART_PUT_CTRL(port, cr);
58
59 if (UART_GET_STATUS(port) & UART_STATUS_THE)
60 apbuart_tx_chars(port);
61}
62
63static void apbuart_stop_rx(struct uart_port *port)
64{
65 unsigned int cr;
66
67 cr = UART_GET_CTRL(port);
68 cr &= ~(UART_CTRL_RI);
69 UART_PUT_CTRL(port, cr);
70}
71
72static void apbuart_enable_ms(struct uart_port *port)
73{
74 /* No modem status change interrupts for APBUART */
75}
76
77static void apbuart_rx_chars(struct uart_port *port)
78{
79 struct tty_struct *tty = port->state->port.tty;
80 unsigned int status, ch, rsr, flag;
81 unsigned int max_chars = port->fifosize;
82
83 status = UART_GET_STATUS(port);
84
85 while (UART_RX_DATA(status) && (max_chars--)) {
86
87 ch = UART_GET_CHAR(port);
88 flag = TTY_NORMAL;
89
90 port->icount.rx++;
91
92 rsr = UART_GET_STATUS(port) | UART_DUMMY_RSR_RX;
93 UART_PUT_STATUS(port, 0);
94 if (rsr & UART_STATUS_ERR) {
95
96 if (rsr & UART_STATUS_BR) {
97 rsr &= ~(UART_STATUS_FE | UART_STATUS_PE);
98 port->icount.brk++;
99 if (uart_handle_break(port))
100 goto ignore_char;
101 } else if (rsr & UART_STATUS_PE) {
102 port->icount.parity++;
103 } else if (rsr & UART_STATUS_FE) {
104 port->icount.frame++;
105 }
106 if (rsr & UART_STATUS_OE)
107 port->icount.overrun++;
108
109 rsr &= port->read_status_mask;
110
111 if (rsr & UART_STATUS_PE)
112 flag = TTY_PARITY;
113 else if (rsr & UART_STATUS_FE)
114 flag = TTY_FRAME;
115 }
116
117 if (uart_handle_sysrq_char(port, ch))
118 goto ignore_char;
119
120 uart_insert_char(port, rsr, UART_STATUS_OE, ch, flag);
121
122
123 ignore_char:
124 status = UART_GET_STATUS(port);
125 }
126
127 tty_flip_buffer_push(tty);
128}
129
130static void apbuart_tx_chars(struct uart_port *port)
131{
132 struct circ_buf *xmit = &port->state->xmit;
133 int count;
134
135 if (port->x_char) {
136 UART_PUT_CHAR(port, port->x_char);
137 port->icount.tx++;
138 port->x_char = 0;
139 return;
140 }
141
142 if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
143 apbuart_stop_tx(port);
144 return;
145 }
146
147 /* amba: fill FIFO */
148 count = port->fifosize >> 1;
149 do {
150 UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
151 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
152 port->icount.tx++;
153 if (uart_circ_empty(xmit))
154 break;
155 } while (--count > 0);
156
157 if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
158 uart_write_wakeup(port);
159
160 if (uart_circ_empty(xmit))
161 apbuart_stop_tx(port);
162}
163
164static irqreturn_t apbuart_int(int irq, void *dev_id)
165{
166 struct uart_port *port = dev_id;
167 unsigned int status;
168
169 spin_lock(&port->lock);
170
171 status = UART_GET_STATUS(port);
172 if (status & UART_STATUS_DR)
173 apbuart_rx_chars(port);
174 if (status & UART_STATUS_THE)
175 apbuart_tx_chars(port);
176
177 spin_unlock(&port->lock);
178
179 return IRQ_HANDLED;
180}
181
182static unsigned int apbuart_tx_empty(struct uart_port *port)
183{
184 unsigned int status = UART_GET_STATUS(port);
185 return status & UART_STATUS_THE ? TIOCSER_TEMT : 0;
186}
187
188static unsigned int apbuart_get_mctrl(struct uart_port *port)
189{
190 /* The GRLIB APBUART handles flow control in hardware */
191 return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
192}
193
194static void apbuart_set_mctrl(struct uart_port *port, unsigned int mctrl)
195{
196 /* The GRLIB APBUART handles flow control in hardware */
197}
198
199static void apbuart_break_ctl(struct uart_port *port, int break_state)
200{
201 /* We don't support sending break */
202}
203
204static int apbuart_startup(struct uart_port *port)
205{
206 int retval;
207 unsigned int cr;
208
209 /* Allocate the IRQ */
210 retval = request_irq(port->irq, apbuart_int, 0, "apbuart", port);
211 if (retval)
212 return retval;
213
214 /* Finally, enable interrupts */
215 cr = UART_GET_CTRL(port);
216 UART_PUT_CTRL(port,
217 cr | UART_CTRL_RE | UART_CTRL_TE |
218 UART_CTRL_RI | UART_CTRL_TI);
219
220 return 0;
221}
222
223static void apbuart_shutdown(struct uart_port *port)
224{
225 unsigned int cr;
226
227 /* disable all interrupts, disable the port */
228 cr = UART_GET_CTRL(port);
229 UART_PUT_CTRL(port,
230 cr & ~(UART_CTRL_RE | UART_CTRL_TE |
231 UART_CTRL_RI | UART_CTRL_TI));
232
233 /* Free the interrupt */
234 free_irq(port->irq, port);
235}
236
237static void apbuart_set_termios(struct uart_port *port,
238 struct ktermios *termios, struct ktermios *old)
239{
240 unsigned int cr;
241 unsigned long flags;
242 unsigned int baud, quot;
243
244 /* Ask the core to calculate the divisor for us. */
245 baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
246 if (baud == 0)
247 panic("invalid baudrate %i\n", port->uartclk / 16);
248
249 /* uart_get_divisor calc a *16 uart freq, apbuart is *8 */
250 quot = (uart_get_divisor(port, baud)) * 2;
251 cr = UART_GET_CTRL(port);
252 cr &= ~(UART_CTRL_PE | UART_CTRL_PS);
253
254 if (termios->c_cflag & PARENB) {
255 cr |= UART_CTRL_PE;
256 if ((termios->c_cflag & PARODD))
257 cr |= UART_CTRL_PS;
258 }
259
260 /* Enable flow control. */
261 if (termios->c_cflag & CRTSCTS)
262 cr |= UART_CTRL_FL;
263
264 spin_lock_irqsave(&port->lock, flags);
265
266 /* Update the per-port timeout. */
267 uart_update_timeout(port, termios->c_cflag, baud);
268
269 port->read_status_mask = UART_STATUS_OE;
270 if (termios->c_iflag & INPCK)
271 port->read_status_mask |= UART_STATUS_FE | UART_STATUS_PE;
272
273 /* Characters to ignore */
274 port->ignore_status_mask = 0;
275 if (termios->c_iflag & IGNPAR)
276 port->ignore_status_mask |= UART_STATUS_FE | UART_STATUS_PE;
277
278 /* Ignore all characters if CREAD is not set. */
279 if ((termios->c_cflag & CREAD) == 0)
280 port->ignore_status_mask |= UART_DUMMY_RSR_RX;
281
282 /* Set baud rate */
283 quot -= 1;
284 UART_PUT_SCAL(port, quot);
285 UART_PUT_CTRL(port, cr);
286
287 spin_unlock_irqrestore(&port->lock, flags);
288}
289
290static const char *apbuart_type(struct uart_port *port)
291{
292 return port->type == PORT_APBUART ? "GRLIB/APBUART" : NULL;
293}
294
295static void apbuart_release_port(struct uart_port *port)
296{
297 release_mem_region(port->mapbase, 0x100);
298}
299
300static int apbuart_request_port(struct uart_port *port)
301{
302 return request_mem_region(port->mapbase, 0x100, "grlib-apbuart")
303 != NULL ? 0 : -EBUSY;
304 return 0;
305}
306
307/* Configure/autoconfigure the port */
308static void apbuart_config_port(struct uart_port *port, int flags)
309{
310 if (flags & UART_CONFIG_TYPE) {
311 port->type = PORT_APBUART;
312 apbuart_request_port(port);
313 }
314}
315
316/* Verify the new serial_struct (for TIOCSSERIAL) */
317static int apbuart_verify_port(struct uart_port *port,
318 struct serial_struct *ser)
319{
320 int ret = 0;
321 if (ser->type != PORT_UNKNOWN && ser->type != PORT_APBUART)
322 ret = -EINVAL;
323 if (ser->irq < 0 || ser->irq >= NR_IRQS)
324 ret = -EINVAL;
325 if (ser->baud_base < 9600)
326 ret = -EINVAL;
327 return ret;
328}
329
330static struct uart_ops grlib_apbuart_ops = {
331 .tx_empty = apbuart_tx_empty,
332 .set_mctrl = apbuart_set_mctrl,
333 .get_mctrl = apbuart_get_mctrl,
334 .stop_tx = apbuart_stop_tx,
335 .start_tx = apbuart_start_tx,
336 .stop_rx = apbuart_stop_rx,
337 .enable_ms = apbuart_enable_ms,
338 .break_ctl = apbuart_break_ctl,
339 .startup = apbuart_startup,
340 .shutdown = apbuart_shutdown,
341 .set_termios = apbuart_set_termios,
342 .type = apbuart_type,
343 .release_port = apbuart_release_port,
344 .request_port = apbuart_request_port,
345 .config_port = apbuart_config_port,
346 .verify_port = apbuart_verify_port,
347};
348
349static struct uart_port grlib_apbuart_ports[UART_NR];
350static struct device_node *grlib_apbuart_nodes[UART_NR];
351
352static int apbuart_scan_fifo_size(struct uart_port *port, int portnumber)
353{
354 int ctrl, loop = 0;
355 int status;
356 int fifosize;
357 unsigned long flags;
358
359 ctrl = UART_GET_CTRL(port);
360
361 /*
362 * Enable the transceiver and wait for it to be ready to send data.
363 * Clear interrupts so that this process will not be externally
364 * interrupted in the middle (which can cause the transceiver to
365 * drain prematurely).
366 */
367
368 local_irq_save(flags);
369
370 UART_PUT_CTRL(port, ctrl | UART_CTRL_TE);
371
372 while (!UART_TX_READY(UART_GET_STATUS(port)))
373 loop++;
374
375 /*
376 * Disable the transceiver so data isn't actually sent during the
377 * actual test.
378 */
379
380 UART_PUT_CTRL(port, ctrl & ~(UART_CTRL_TE));
381
382 fifosize = 1;
383 UART_PUT_CHAR(port, 0);
384
385 /*
386 * So long as transmitting a character increments the tranceivier FIFO
387 * length the FIFO must be at least that big. These bytes will
388 * automatically drain off of the FIFO.
389 */
390
391 status = UART_GET_STATUS(port);
392 while (((status >> 20) & 0x3F) == fifosize) {
393 fifosize++;
394 UART_PUT_CHAR(port, 0);
395 status = UART_GET_STATUS(port);
396 }
397
398 fifosize--;
399
400 UART_PUT_CTRL(port, ctrl);
401 local_irq_restore(flags);
402
403 if (fifosize == 0)
404 fifosize = 1;
405
406 return fifosize;
407}
408
409static void apbuart_flush_fifo(struct uart_port *port)
410{
411 int i;
412
413 for (i = 0; i < port->fifosize; i++)
414 UART_GET_CHAR(port);
415}
416
417
418/* ======================================================================== */
419/* Console driver, if enabled */
420/* ======================================================================== */
421
422#ifdef CONFIG_SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
423
424static void apbuart_console_putchar(struct uart_port *port, int ch)
425{
426 unsigned int status;
427 do {
428 status = UART_GET_STATUS(port);
429 } while (!UART_TX_READY(status));
430 UART_PUT_CHAR(port, ch);
431}
432
433static void
434apbuart_console_write(struct console *co, const char *s, unsigned int count)
435{
436 struct uart_port *port = &grlib_apbuart_ports[co->index];
437 unsigned int status, old_cr, new_cr;
438
439 /* First save the CR then disable the interrupts */
440 old_cr = UART_GET_CTRL(port);
441 new_cr = old_cr & ~(UART_CTRL_RI | UART_CTRL_TI);
442 UART_PUT_CTRL(port, new_cr);
443
444 uart_console_write(port, s, count, apbuart_console_putchar);
445
446 /*
447 * Finally, wait for transmitter to become empty
448 * and restore the TCR
449 */
450 do {
451 status = UART_GET_STATUS(port);
452 } while (!UART_TX_READY(status));
453 UART_PUT_CTRL(port, old_cr);
454}
455
456static void __init
457apbuart_console_get_options(struct uart_port *port, int *baud,
458 int *parity, int *bits)
459{
460 if (UART_GET_CTRL(port) & (UART_CTRL_RE | UART_CTRL_TE)) {
461
462 unsigned int quot, status;
463 status = UART_GET_STATUS(port);
464
465 *parity = 'n';
466 if (status & UART_CTRL_PE) {
467 if ((status & UART_CTRL_PS) == 0)
468 *parity = 'e';
469 else
470 *parity = 'o';
471 }
472
473 *bits = 8;
474 quot = UART_GET_SCAL(port) / 8;
475 *baud = port->uartclk / (16 * (quot + 1));
476 }
477}
478
479static int __init apbuart_console_setup(struct console *co, char *options)
480{
481 struct uart_port *port;
482 int baud = 38400;
483 int bits = 8;
484 int parity = 'n';
485 int flow = 'n';
486
487 pr_debug("apbuart_console_setup co=%p, co->index=%i, options=%s\n",
488 co, co->index, options);
489
490 /*
491 * Check whether an invalid uart number has been specified, and
492 * if so, search for the first available port that does have
493 * console support.
494 */
495 if (co->index >= grlib_apbuart_port_nr)
496 co->index = 0;
497
498 port = &grlib_apbuart_ports[co->index];
499
500 spin_lock_init(&port->lock);
501
502 if (options)
503 uart_parse_options(options, &baud, &parity, &bits, &flow);
504 else
505 apbuart_console_get_options(port, &baud, &parity, &bits);
506
507 return uart_set_options(port, co, baud, parity, bits, flow);
508}
509
510static struct uart_driver grlib_apbuart_driver;
511
512static struct console grlib_apbuart_console = {
513 .name = "ttyS",
514 .write = apbuart_console_write,
515 .device = uart_console_device,
516 .setup = apbuart_console_setup,
517 .flags = CON_PRINTBUFFER,
518 .index = -1,
519 .data = &grlib_apbuart_driver,
520};
521
522
523static void grlib_apbuart_configure(void);
524
525static int __init apbuart_console_init(void)
526{
527 grlib_apbuart_configure();
528 register_console(&grlib_apbuart_console);
529 return 0;
530}
531
532console_initcall(apbuart_console_init);
533
534#define APBUART_CONSOLE (&grlib_apbuart_console)
535#else
536#define APBUART_CONSOLE NULL
537#endif
538
539static struct uart_driver grlib_apbuart_driver = {
540 .owner = THIS_MODULE,
541 .driver_name = "serial",
542 .dev_name = "ttyS",
543 .major = SERIAL_APBUART_MAJOR,
544 .minor = SERIAL_APBUART_MINOR,
545 .nr = UART_NR,
546 .cons = APBUART_CONSOLE,
547};
548
549
550/* ======================================================================== */
551/* OF Platform Driver */
552/* ======================================================================== */
553
554static int __devinit apbuart_probe(struct of_device *op,
555 const struct of_device_id *match)
556{
557 int i = -1;
558 struct uart_port *port = NULL;
559
560 i = 0;
561 for (i = 0; i < grlib_apbuart_port_nr; i++) {
562 if (op->node == grlib_apbuart_nodes[i])
563 break;
564 }
565
566 port = &grlib_apbuart_ports[i];
567 port->dev = &op->dev;
568
569 uart_add_one_port(&grlib_apbuart_driver, (struct uart_port *) port);
570
571 apbuart_flush_fifo((struct uart_port *) port);
572
573 printk(KERN_INFO "grlib-apbuart at 0x%llx, irq %d\n",
574 (unsigned long long) port->mapbase, port->irq);
575 return 0;
576
577}
578
579static struct of_device_id __initdata apbuart_match[] = {
580 {
581 .name = "GAISLER_APBUART",
582 },
583 {},
584};
585
586static struct of_platform_driver grlib_apbuart_of_driver = {
587 .match_table = apbuart_match,
588 .probe = apbuart_probe,
589 .driver = {
590 .owner = THIS_MODULE,
591 .name = "grlib-apbuart",
592 },
593};
594
595
596static void grlib_apbuart_configure(void)
597{
598 static int enum_done;
599 struct device_node *np, *rp;
600 struct uart_port *port = NULL;
601 const u32 *prop;
602 int freq_khz;
603 int v = 0, d = 0;
604 unsigned int addr;
605 int irq, line;
606 struct amba_prom_registers *regs;
607
608 if (enum_done)
609 return;
610
611 /* Get bus frequency */
612 rp = of_find_node_by_path("/");
613 rp = of_get_next_child(rp, NULL);
614 prop = of_get_property(rp, "clock-frequency", NULL);
615 freq_khz = *prop;
616
617 line = 0;
618 for_each_matching_node(np, apbuart_match) {
619
620 int *vendor = (int *) of_get_property(np, "vendor", NULL);
621 int *device = (int *) of_get_property(np, "device", NULL);
622 int *irqs = (int *) of_get_property(np, "interrupts", NULL);
623 regs = (struct amba_prom_registers *)
624 of_get_property(np, "reg", NULL);
625
626 if (vendor)
627 v = *vendor;
628 if (device)
629 d = *device;
630
631 if (!irqs || !regs)
632 return;
633
634 grlib_apbuart_nodes[line] = np;
635
636 addr = regs->phys_addr;
637 irq = *irqs;
638
639 port = &grlib_apbuart_ports[line];
640
641 port->mapbase = addr;
642 port->membase = ioremap(addr, sizeof(struct grlib_apbuart_regs_map));
643 port->irq = irq;
644 port->iotype = UPIO_MEM;
645 port->ops = &grlib_apbuart_ops;
646 port->flags = UPF_BOOT_AUTOCONF;
647 port->line = line;
648 port->uartclk = freq_khz * 1000;
649 port->fifosize = apbuart_scan_fifo_size((struct uart_port *) port, line);
650 line++;
651
652 /* We support maximum UART_NR uarts ... */
653 if (line == UART_NR)
654 break;
655
656 }
657
658 enum_done = 1;
659
660 grlib_apbuart_driver.nr = grlib_apbuart_port_nr = line;
661}
662
663static int __init grlib_apbuart_init(void)
664{
665 int ret;
666
667 /* Find all APBUARTS in device the tree and initialize their ports */
668 grlib_apbuart_configure();
669
670 printk(KERN_INFO "Serial: GRLIB APBUART driver\n");
671
672 ret = uart_register_driver(&grlib_apbuart_driver);
673
674 if (ret) {
675 printk(KERN_ERR "%s: uart_register_driver failed (%i)\n",
676 __FILE__, ret);
677 return ret;
678 }
679
680 ret = of_register_platform_driver(&grlib_apbuart_of_driver);
681 if (ret) {
682 printk(KERN_ERR
683 "%s: of_register_platform_driver failed (%i)\n",
684 __FILE__, ret);
685 uart_unregister_driver(&grlib_apbuart_driver);
686 return ret;
687 }
688
689 return ret;
690}
691
692static void __exit grlib_apbuart_exit(void)
693{
694 int i;
695
696 for (i = 0; i < grlib_apbuart_port_nr; i++)
697 uart_remove_one_port(&grlib_apbuart_driver,
698 &grlib_apbuart_ports[i]);
699
700 uart_unregister_driver(&grlib_apbuart_driver);
701 of_unregister_platform_driver(&grlib_apbuart_of_driver);
702}
703
704module_init(grlib_apbuart_init);
705module_exit(grlib_apbuart_exit);
706
707MODULE_AUTHOR("Aeroflex Gaisler AB");
708MODULE_DESCRIPTION("GRLIB APBUART serial driver");
709MODULE_VERSION("2.1");
710MODULE_LICENSE("GPL");
diff --git a/drivers/serial/apbuart.h b/drivers/serial/apbuart.h
new file mode 100644
index 000000000000..5faf87c8d2bc
--- /dev/null
+++ b/drivers/serial/apbuart.h
@@ -0,0 +1,64 @@
1#ifndef __GRLIB_APBUART_H__
2#define __GRLIB_APBUART_H__
3
4#include <asm/io.h>
5
6#define UART_NR 8
7static int grlib_apbuart_port_nr;
8
9struct grlib_apbuart_regs_map {
10 u32 data;
11 u32 status;
12 u32 ctrl;
13 u32 scaler;
14};
15
16struct amba_prom_registers {
17 unsigned int phys_addr;
18 unsigned int reg_size;
19};
20
21/*
22 * The following defines the bits in the APBUART Status Registers.
23 */
24#define UART_STATUS_DR 0x00000001 /* Data Ready */
25#define UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
26#define UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
27#define UART_STATUS_BR 0x00000008 /* Break Error */
28#define UART_STATUS_OE 0x00000010 /* RX Overrun Error */
29#define UART_STATUS_PE 0x00000020 /* RX Parity Error */
30#define UART_STATUS_FE 0x00000040 /* RX Framing Error */
31#define UART_STATUS_ERR 0x00000078 /* Error Mask */
32
33/*
34 * The following defines the bits in the APBUART Ctrl Registers.
35 */
36#define UART_CTRL_RE 0x00000001 /* Receiver enable */
37#define UART_CTRL_TE 0x00000002 /* Transmitter enable */
38#define UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
39#define UART_CTRL_TI 0x00000008 /* Transmitter irq */
40#define UART_CTRL_PS 0x00000010 /* Parity select */
41#define UART_CTRL_PE 0x00000020 /* Parity enable */
42#define UART_CTRL_FL 0x00000040 /* Flow control enable */
43#define UART_CTRL_LB 0x00000080 /* Loopback enable */
44
45#define APBBASE(port) ((struct grlib_apbuart_regs_map *)((port)->membase))
46
47#define APBBASE_DATA_P(port) (&(APBBASE(port)->data))
48#define APBBASE_STATUS_P(port) (&(APBBASE(port)->status))
49#define APBBASE_CTRL_P(port) (&(APBBASE(port)->ctrl))
50#define APBBASE_SCALAR_P(port) (&(APBBASE(port)->scaler))
51
52#define UART_GET_CHAR(port) (__raw_readl(APBBASE_DATA_P(port)))
53#define UART_PUT_CHAR(port, v) (__raw_writel(v, APBBASE_DATA_P(port)))
54#define UART_GET_STATUS(port) (__raw_readl(APBBASE_STATUS_P(port)))
55#define UART_PUT_STATUS(port, v)(__raw_writel(v, APBBASE_STATUS_P(port)))
56#define UART_GET_CTRL(port) (__raw_readl(APBBASE_CTRL_P(port)))
57#define UART_PUT_CTRL(port, v) (__raw_writel(v, APBBASE_CTRL_P(port)))
58#define UART_GET_SCAL(port) (__raw_readl(APBBASE_SCALAR_P(port)))
59#define UART_PUT_SCAL(port, v) (__raw_writel(v, APBBASE_SCALAR_P(port)))
60
61#define UART_RX_DATA(s) (((s) & UART_STATUS_DR) != 0)
62#define UART_TX_READY(s) (((s) & UART_STATUS_THE) != 0)
63
64#endif /* __GRLIB_APBUART_H__ */
diff --git a/drivers/serial/mcf.c b/drivers/serial/mcf.c
index b44382442bf1..7bb5fee639e3 100644
--- a/drivers/serial/mcf.c
+++ b/drivers/serial/mcf.c
@@ -602,7 +602,7 @@ static int __devinit mcf_probe(struct platform_device *pdev)
602 602
603/****************************************************************************/ 603/****************************************************************************/
604 604
605static int mcf_remove(struct platform_device *pdev) 605static int __devexit mcf_remove(struct platform_device *pdev)
606{ 606{
607 struct uart_port *port; 607 struct uart_port *port;
608 int i; 608 int i;
diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index c99f0821cae3..73f089d3efd6 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -2,7 +2,7 @@
2 * 2 *
3 * Driver for Samsung S3C2410 SoC onboard UARTs. 3 * Driver for Samsung S3C2410 SoC onboard UARTs.
4 * 4 *
5 * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics 5 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
6 * http://armlinux.simtec.co.uk/ 6 * http://armlinux.simtec.co.uk/
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/serial/s3c2412.c b/drivers/serial/s3c2412.c
index 6e057d8809d3..ce75e28e36ef 100644
--- a/drivers/serial/s3c2412.c
+++ b/drivers/serial/s3c2412.c
@@ -2,7 +2,7 @@
2 * 2 *
3 * Driver for Samsung S3C2412 and S3C2413 SoC onboard UARTs. 3 * Driver for Samsung S3C2412 and S3C2413 SoC onboard UARTs.
4 * 4 *
5 * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics 5 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
6 * http://armlinux.simtec.co.uk/ 6 * http://armlinux.simtec.co.uk/
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/serial/s3c2440.c b/drivers/serial/s3c2440.c
index 69ff5d340f04..094cc3904b13 100644
--- a/drivers/serial/s3c2440.c
+++ b/drivers/serial/s3c2440.c
@@ -2,7 +2,7 @@
2 * 2 *
3 * Driver for Samsung S3C2440 and S3C2442 SoC onboard UARTs. 3 * Driver for Samsung S3C2440 and S3C2442 SoC onboard UARTs.
4 * 4 *
5 * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics 5 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
6 * http://armlinux.simtec.co.uk/ 6 * http://armlinux.simtec.co.uk/
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/serial/s3c24a0.c b/drivers/serial/s3c24a0.c
index 26c49e18bdd1..fad6083ca427 100644
--- a/drivers/serial/s3c24a0.c
+++ b/drivers/serial/s3c24a0.c
@@ -6,7 +6,7 @@
6 * 6 *
7 * Author: Sandeep Patil <sandeep.patil@azingo.com> 7 * Author: Sandeep Patil <sandeep.patil@azingo.com>
8 * 8 *
9 * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics 9 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
10 * http://armlinux.simtec.co.uk/ 10 * http://armlinux.simtec.co.uk/
11 * 11 *
12 * This program is free software; you can redistribute it and/or modify 12 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c
index 1523e8d9ae77..52e3df113ec0 100644
--- a/drivers/serial/samsung.c
+++ b/drivers/serial/samsung.c
@@ -2,7 +2,7 @@
2 * 2 *
3 * Driver core for Samsung SoC onboard UARTs. 3 * Driver core for Samsung SoC onboard UARTs.
4 * 4 *
5 * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics 5 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
6 * http://armlinux.simtec.co.uk/ 6 * http://armlinux.simtec.co.uk/
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/serial/samsung.h b/drivers/serial/samsung.h
index d3fe315969f6..1fb22343df42 100644
--- a/drivers/serial/samsung.h
+++ b/drivers/serial/samsung.h
@@ -2,7 +2,7 @@
2 * 2 *
3 * Driver for Samsung SoC onboard UARTs. 3 * Driver for Samsung SoC onboard UARTs.
4 * 4 *
5 * Ben Dooks, Copyright (c) 2003-2005,2008 Simtec Electronics 5 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
6 * http://armlinux.simtec.co.uk/ 6 * http://armlinux.simtec.co.uk/
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 6498bd1fb6dd..ff38dbdb5c6e 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -50,7 +50,6 @@
50#include <linux/list.h> 50#include <linux/list.h>
51 51
52#ifdef CONFIG_SUPERH 52#ifdef CONFIG_SUPERH
53#include <asm/clock.h>
54#include <asm/sh_bios.h> 53#include <asm/sh_bios.h>
55#endif 54#endif
56 55
@@ -79,22 +78,18 @@ struct sci_port {
79 struct timer_list break_timer; 78 struct timer_list break_timer;
80 int break_flag; 79 int break_flag;
81 80
82#ifdef CONFIG_HAVE_CLK
83 /* Interface clock */ 81 /* Interface clock */
84 struct clk *iclk; 82 struct clk *iclk;
85 /* Data clock */ 83 /* Data clock */
86 struct clk *dclk; 84 struct clk *dclk;
87#endif 85
88 struct list_head node; 86 struct list_head node;
89}; 87};
90 88
91struct sh_sci_priv { 89struct sh_sci_priv {
92 spinlock_t lock; 90 spinlock_t lock;
93 struct list_head ports; 91 struct list_head ports;
94
95#ifdef CONFIG_HAVE_CLK
96 struct notifier_block clk_nb; 92 struct notifier_block clk_nb;
97#endif
98}; 93};
99 94
100/* Function prototypes */ 95/* Function prototypes */
@@ -156,32 +151,6 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
156} 151}
157#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */ 152#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
158 153
159#if defined(__H8300S__)
160enum { sci_disable, sci_enable };
161
162static void h8300_sci_config(struct uart_port *port, unsigned int ctrl)
163{
164 volatile unsigned char *mstpcrl = (volatile unsigned char *)MSTPCRL;
165 int ch = (port->mapbase - SMR0) >> 3;
166 unsigned char mask = 1 << (ch+1);
167
168 if (ctrl == sci_disable)
169 *mstpcrl |= mask;
170 else
171 *mstpcrl &= ~mask;
172}
173
174static void h8300_sci_enable(struct uart_port *port)
175{
176 h8300_sci_config(port, sci_enable);
177}
178
179static void h8300_sci_disable(struct uart_port *port)
180{
181 h8300_sci_config(port, sci_disable);
182}
183#endif
184
185#if defined(__H8300H__) || defined(__H8300S__) 154#if defined(__H8300H__) || defined(__H8300S__)
186static void sci_init_pins(struct uart_port *port, unsigned int cflag) 155static void sci_init_pins(struct uart_port *port, unsigned int cflag)
187{ 156{
@@ -733,7 +702,6 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
733 return ret; 702 return ret;
734} 703}
735 704
736#ifdef CONFIG_HAVE_CLK
737/* 705/*
738 * Here we define a transistion notifier so that we can update all of our 706 * Here we define a transistion notifier so that we can update all of our
739 * ports' baud rate when the peripheral clock changes. 707 * ports' baud rate when the peripheral clock changes.
@@ -751,7 +719,6 @@ static int sci_notifier(struct notifier_block *self,
751 spin_lock_irqsave(&priv->lock, flags); 719 spin_lock_irqsave(&priv->lock, flags);
752 list_for_each_entry(sci_port, &priv->ports, node) 720 list_for_each_entry(sci_port, &priv->ports, node)
753 sci_port->port.uartclk = clk_get_rate(sci_port->dclk); 721 sci_port->port.uartclk = clk_get_rate(sci_port->dclk);
754
755 spin_unlock_irqrestore(&priv->lock, flags); 722 spin_unlock_irqrestore(&priv->lock, flags);
756 } 723 }
757 724
@@ -778,7 +745,6 @@ static void sci_clk_disable(struct uart_port *port)
778 745
779 clk_disable(sci_port->dclk); 746 clk_disable(sci_port->dclk);
780} 747}
781#endif
782 748
783static int sci_request_irq(struct sci_port *port) 749static int sci_request_irq(struct sci_port *port)
784{ 750{
@@ -833,8 +799,8 @@ static void sci_free_irq(struct sci_port *port)
833 799
834static unsigned int sci_tx_empty(struct uart_port *port) 800static unsigned int sci_tx_empty(struct uart_port *port)
835{ 801{
836 /* Can't detect */ 802 unsigned short status = sci_in(port, SCxSR);
837 return TIOCSER_TEMT; 803 return status & SCxSR_TEND(port) ? TIOCSER_TEMT : 0;
838} 804}
839 805
840static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl) 806static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
@@ -1077,21 +1043,10 @@ static void __devinit sci_init_single(struct platform_device *dev,
1077 sci_port->port.iotype = UPIO_MEM; 1043 sci_port->port.iotype = UPIO_MEM;
1078 sci_port->port.line = index; 1044 sci_port->port.line = index;
1079 sci_port->port.fifosize = 1; 1045 sci_port->port.fifosize = 1;
1080
1081#if defined(__H8300H__) || defined(__H8300S__)
1082#ifdef __H8300S__
1083 sci_port->enable = h8300_sci_enable;
1084 sci_port->disable = h8300_sci_disable;
1085#endif
1086 sci_port->port.uartclk = CONFIG_CPU_CLOCK;
1087#elif defined(CONFIG_HAVE_CLK)
1088 sci_port->iclk = p->clk ? clk_get(&dev->dev, p->clk) : NULL; 1046 sci_port->iclk = p->clk ? clk_get(&dev->dev, p->clk) : NULL;
1089 sci_port->dclk = clk_get(&dev->dev, "peripheral_clk"); 1047 sci_port->dclk = clk_get(&dev->dev, "peripheral_clk");
1090 sci_port->enable = sci_clk_enable; 1048 sci_port->enable = sci_clk_enable;
1091 sci_port->disable = sci_clk_disable; 1049 sci_port->disable = sci_clk_disable;
1092#else
1093#error "Need a valid uartclk"
1094#endif
1095 1050
1096 sci_port->break_timer.data = (unsigned long)sci_port; 1051 sci_port->break_timer.data = (unsigned long)sci_port;
1097 sci_port->break_timer.function = sci_break_timer; 1052 sci_port->break_timer.function = sci_break_timer;
@@ -1106,7 +1061,6 @@ static void __devinit sci_init_single(struct platform_device *dev,
1106 sci_port->type = sci_port->port.type = p->type; 1061 sci_port->type = sci_port->port.type = p->type;
1107 1062
1108 memcpy(&sci_port->irqs, &p->irqs, sizeof(p->irqs)); 1063 memcpy(&sci_port->irqs, &p->irqs, sizeof(p->irqs));
1109
1110} 1064}
1111 1065
1112#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE 1066#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
@@ -1239,14 +1193,11 @@ static int sci_remove(struct platform_device *dev)
1239 struct sci_port *p; 1193 struct sci_port *p;
1240 unsigned long flags; 1194 unsigned long flags;
1241 1195
1242#ifdef CONFIG_HAVE_CLK
1243 cpufreq_unregister_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER); 1196 cpufreq_unregister_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
1244#endif
1245 1197
1246 spin_lock_irqsave(&priv->lock, flags); 1198 spin_lock_irqsave(&priv->lock, flags);
1247 list_for_each_entry(p, &priv->ports, node) 1199 list_for_each_entry(p, &priv->ports, node)
1248 uart_remove_one_port(&sci_uart_driver, &p->port); 1200 uart_remove_one_port(&sci_uart_driver, &p->port);
1249
1250 spin_unlock_irqrestore(&priv->lock, flags); 1201 spin_unlock_irqrestore(&priv->lock, flags);
1251 1202
1252 kfree(priv); 1203 kfree(priv);
@@ -1307,10 +1258,8 @@ static int __devinit sci_probe(struct platform_device *dev)
1307 spin_lock_init(&priv->lock); 1258 spin_lock_init(&priv->lock);
1308 platform_set_drvdata(dev, priv); 1259 platform_set_drvdata(dev, priv);
1309 1260
1310#ifdef CONFIG_HAVE_CLK
1311 priv->clk_nb.notifier_call = sci_notifier; 1261 priv->clk_nb.notifier_call = sci_notifier;
1312 cpufreq_register_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER); 1262 cpufreq_register_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
1313#endif
1314 1263
1315 if (dev->id != -1) { 1264 if (dev->id != -1) {
1316 ret = sci_probe_single(dev, dev->id, p, &sci_ports[dev->id]); 1265 ret = sci_probe_single(dev, dev->id, p, &sci_ports[dev->id]);
@@ -1370,7 +1319,7 @@ static struct dev_pm_ops sci_dev_pm_ops = {
1370 1319
1371static struct platform_driver sci_driver = { 1320static struct platform_driver sci_driver = {
1372 .probe = sci_probe, 1321 .probe = sci_probe,
1373 .remove = __devexit_p(sci_remove), 1322 .remove = sci_remove,
1374 .driver = { 1323 .driver = {
1375 .name = "sh-sci", 1324 .name = "sh-sci",
1376 .owner = THIS_MODULE, 1325 .owner = THIS_MODULE,
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 3e2fcf93b42e..a32094eeb42b 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -1,5 +1,5 @@
1#include <linux/serial_core.h> 1#include <linux/serial_core.h>
2#include <asm/io.h> 2#include <linux/io.h>
3#include <linux/gpio.h> 3#include <linux/gpio.h>
4 4
5#if defined(CONFIG_H83007) || defined(CONFIG_H83068) 5#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 09:44:11 -0500