diff options
-rw-r--r-- | drivers/serial/Kconfig | 19 | ||||
-rw-r--r-- | drivers/serial/Makefile | 1 | ||||
-rw-r--r-- | drivers/serial/nwpserial.c | 475 | ||||
-rw-r--r-- | drivers/serial/of_serial.c | 19 | ||||
-rw-r--r-- | include/linux/nwpserial.h | 18 | ||||
-rw-r--r-- | include/linux/serial_core.h | 3 |
6 files changed, 534 insertions, 1 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index b695ab3142d8..64fcf8c20821 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig | |||
@@ -1320,13 +1320,30 @@ config SERIAL_NETX_CONSOLE | |||
1320 | config SERIAL_OF_PLATFORM | 1320 | config SERIAL_OF_PLATFORM |
1321 | tristate "Serial port on Open Firmware platform bus" | 1321 | tristate "Serial port on Open Firmware platform bus" |
1322 | depends on PPC_OF | 1322 | depends on PPC_OF |
1323 | depends on SERIAL_8250 | 1323 | depends on SERIAL_8250 || SERIAL_OF_PLATFORM_NWPSERIAL |
1324 | help | 1324 | help |
1325 | If you have a PowerPC based system that has serial ports | 1325 | If you have a PowerPC based system that has serial ports |
1326 | on a platform specific bus, you should enable this option. | 1326 | on a platform specific bus, you should enable this option. |
1327 | Currently, only 8250 compatible ports are supported, but | 1327 | Currently, only 8250 compatible ports are supported, but |
1328 | others can easily be added. | 1328 | others can easily be added. |
1329 | 1329 | ||
1330 | config SERIAL_OF_PLATFORM_NWPSERIAL | ||
1331 | tristate "NWP serial port driver" | ||
1332 | depends on PPC_OF && PPC_DCR | ||
1333 | select SERIAL_OF_PLATFORM | ||
1334 | select SERIAL_CORE_CONSOLE | ||
1335 | select SERIAL_CORE | ||
1336 | help | ||
1337 | This driver supports the cell network processor nwp serial | ||
1338 | device. | ||
1339 | |||
1340 | config SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE | ||
1341 | bool "Console on NWP serial port" | ||
1342 | depends on SERIAL_OF_PLATFORM_NWPSERIAL=y | ||
1343 | select SERIAL_CORE_CONSOLE | ||
1344 | help | ||
1345 | Support for Console on the NWP serial ports. | ||
1346 | |||
1330 | config SERIAL_QE | 1347 | config SERIAL_QE |
1331 | tristate "Freescale QUICC Engine serial port support" | 1348 | tristate "Freescale QUICC Engine serial port support" |
1332 | depends on QUICC_ENGINE | 1349 | depends on QUICC_ENGINE |
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index dfe775ac45b2..8844c0a03929 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile | |||
@@ -72,6 +72,7 @@ obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o | |||
72 | obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o | 72 | obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o |
73 | obj-$(CONFIG_SERIAL_NETX) += netx-serial.o | 73 | obj-$(CONFIG_SERIAL_NETX) += netx-serial.o |
74 | obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o | 74 | obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o |
75 | obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o | ||
75 | obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o | 76 | obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o |
76 | obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o | 77 | obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o |
77 | obj-$(CONFIG_SERIAL_QE) += ucc_uart.o | 78 | obj-$(CONFIG_SERIAL_QE) += ucc_uart.o |
diff --git a/drivers/serial/nwpserial.c b/drivers/serial/nwpserial.c new file mode 100644 index 000000000000..32f3eaf0d262 --- /dev/null +++ b/drivers/serial/nwpserial.c | |||
@@ -0,0 +1,475 @@ | |||
1 | /* | ||
2 | * Serial Port driver for a NWP uart device | ||
3 | * | ||
4 | * Copyright (C) 2008 IBM Corp., Benjamin Krill <ben@codiert.org> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public License | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the License, or (at your option) any later version. | ||
10 | * | ||
11 | */ | ||
12 | #include <linux/init.h> | ||
13 | #include <linux/console.h> | ||
14 | #include <linux/serial.h> | ||
15 | #include <linux/serial_reg.h> | ||
16 | #include <linux/serial_core.h> | ||
17 | #include <linux/tty.h> | ||
18 | #include <linux/irqreturn.h> | ||
19 | #include <linux/mutex.h> | ||
20 | #include <linux/of_platform.h> | ||
21 | #include <linux/of_device.h> | ||
22 | #include <linux/nwpserial.h> | ||
23 | #include <asm/prom.h> | ||
24 | #include <asm/dcr.h> | ||
25 | |||
26 | #define NWPSERIAL_NR 2 | ||
27 | |||
28 | #define NWPSERIAL_STATUS_RXVALID 0x1 | ||
29 | #define NWPSERIAL_STATUS_TXFULL 0x2 | ||
30 | |||
31 | struct nwpserial_port { | ||
32 | struct uart_port port; | ||
33 | dcr_host_t dcr_host; | ||
34 | unsigned int ier; | ||
35 | unsigned int mcr; | ||
36 | }; | ||
37 | |||
38 | static DEFINE_MUTEX(nwpserial_mutex); | ||
39 | static struct nwpserial_port nwpserial_ports[NWPSERIAL_NR]; | ||
40 | |||
41 | static void wait_for_bits(struct nwpserial_port *up, int bits) | ||
42 | { | ||
43 | unsigned int status, tmout = 10000; | ||
44 | |||
45 | /* Wait up to 10ms for the character(s) to be sent. */ | ||
46 | do { | ||
47 | status = dcr_read(up->dcr_host, UART_LSR); | ||
48 | |||
49 | if (--tmout == 0) | ||
50 | break; | ||
51 | udelay(1); | ||
52 | } while ((status & bits) != bits); | ||
53 | } | ||
54 | |||
55 | #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE | ||
56 | static void nwpserial_console_putchar(struct uart_port *port, int c) | ||
57 | { | ||
58 | struct nwpserial_port *up; | ||
59 | up = container_of(port, struct nwpserial_port, port); | ||
60 | /* check if tx buffer is full */ | ||
61 | wait_for_bits(up, UART_LSR_THRE); | ||
62 | dcr_write(up->dcr_host, UART_TX, c); | ||
63 | up->port.icount.tx++; | ||
64 | } | ||
65 | |||
66 | static void | ||
67 | nwpserial_console_write(struct console *co, const char *s, unsigned int count) | ||
68 | { | ||
69 | struct nwpserial_port *up = &nwpserial_ports[co->index]; | ||
70 | unsigned long flags; | ||
71 | int locked = 1; | ||
72 | |||
73 | if (oops_in_progress) | ||
74 | locked = spin_trylock_irqsave(&up->port.lock, flags); | ||
75 | else | ||
76 | spin_lock_irqsave(&up->port.lock, flags); | ||
77 | |||
78 | /* save and disable interrupt */ | ||
79 | up->ier = dcr_read(up->dcr_host, UART_IER); | ||
80 | dcr_write(up->dcr_host, UART_IER, up->ier & ~UART_IER_RDI); | ||
81 | |||
82 | uart_console_write(&up->port, s, count, nwpserial_console_putchar); | ||
83 | |||
84 | /* wait for transmitter to become emtpy */ | ||
85 | while ((dcr_read(up->dcr_host, UART_LSR) & UART_LSR_THRE) == 0) | ||
86 | cpu_relax(); | ||
87 | |||
88 | /* restore interrupt state */ | ||
89 | dcr_write(up->dcr_host, UART_IER, up->ier); | ||
90 | |||
91 | if (locked) | ||
92 | spin_unlock_irqrestore(&up->port.lock, flags); | ||
93 | } | ||
94 | |||
95 | static struct uart_driver nwpserial_reg; | ||
96 | static struct console nwpserial_console = { | ||
97 | .name = "ttySQ", | ||
98 | .write = nwpserial_console_write, | ||
99 | .device = uart_console_device, | ||
100 | .flags = CON_PRINTBUFFER, | ||
101 | .index = -1, | ||
102 | .data = &nwpserial_reg, | ||
103 | }; | ||
104 | #define NWPSERIAL_CONSOLE (&nwpserial_console) | ||
105 | #else | ||
106 | #define NWPSERIAL_CONSOLE NULL | ||
107 | #endif /* CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE */ | ||
108 | |||
109 | /**************************************************************************/ | ||
110 | |||
111 | static int nwpserial_request_port(struct uart_port *port) | ||
112 | { | ||
113 | return 0; | ||
114 | } | ||
115 | |||
116 | static void nwpserial_release_port(struct uart_port *port) | ||
117 | { | ||
118 | /* N/A */ | ||
119 | } | ||
120 | |||
121 | static void nwpserial_config_port(struct uart_port *port, int flags) | ||
122 | { | ||
123 | port->type = PORT_NWPSERIAL; | ||
124 | } | ||
125 | |||
126 | static irqreturn_t nwpserial_interrupt(int irq, void *dev_id) | ||
127 | { | ||
128 | struct nwpserial_port *up = dev_id; | ||
129 | struct tty_struct *tty = up->port.info->port.tty; | ||
130 | irqreturn_t ret; | ||
131 | unsigned int iir; | ||
132 | unsigned char ch; | ||
133 | |||
134 | spin_lock(&up->port.lock); | ||
135 | |||
136 | /* check if the uart was the interrupt source. */ | ||
137 | iir = dcr_read(up->dcr_host, UART_IIR); | ||
138 | if (!iir) { | ||
139 | ret = IRQ_NONE; | ||
140 | goto out; | ||
141 | } | ||
142 | |||
143 | do { | ||
144 | up->port.icount.rx++; | ||
145 | ch = dcr_read(up->dcr_host, UART_RX); | ||
146 | if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID) | ||
147 | tty_insert_flip_char(tty, ch, TTY_NORMAL); | ||
148 | } while (dcr_read(up->dcr_host, UART_RX) & UART_LSR_DR); | ||
149 | |||
150 | tty_flip_buffer_push(tty); | ||
151 | ret = IRQ_HANDLED; | ||
152 | |||
153 | out: | ||
154 | spin_unlock(&up->port.lock); | ||
155 | return ret; | ||
156 | } | ||
157 | |||
158 | static int nwpserial_startup(struct uart_port *port) | ||
159 | { | ||
160 | struct nwpserial_port *up; | ||
161 | int err; | ||
162 | |||
163 | up = container_of(port, struct nwpserial_port, port); | ||
164 | |||
165 | /* disable flow control by default */ | ||
166 | up->mcr = dcr_read(up->dcr_host, UART_MCR) & ~UART_MCR_AFE; | ||
167 | dcr_write(up->dcr_host, UART_MCR, up->mcr); | ||
168 | |||
169 | /* register interrupt handler */ | ||
170 | err = request_irq(up->port.irq, nwpserial_interrupt, | ||
171 | IRQF_SHARED, "nwpserial", up); | ||
172 | if (err) | ||
173 | return err; | ||
174 | |||
175 | /* enable interrupts */ | ||
176 | up->ier = UART_IER_RDI; | ||
177 | dcr_write(up->dcr_host, UART_IER, up->ier); | ||
178 | |||
179 | /* enable receiving */ | ||
180 | up->port.ignore_status_mask &= ~NWPSERIAL_STATUS_RXVALID; | ||
181 | |||
182 | return 0; | ||
183 | } | ||
184 | |||
185 | static void nwpserial_shutdown(struct uart_port *port) | ||
186 | { | ||
187 | struct nwpserial_port *up; | ||
188 | up = container_of(port, struct nwpserial_port, port); | ||
189 | |||
190 | /* disable receiving */ | ||
191 | up->port.ignore_status_mask |= NWPSERIAL_STATUS_RXVALID; | ||
192 | |||
193 | /* disable interrupts from this port */ | ||
194 | up->ier = 0; | ||
195 | dcr_write(up->dcr_host, UART_IER, up->ier); | ||
196 | |||
197 | /* free irq */ | ||
198 | free_irq(up->port.irq, port); | ||
199 | } | ||
200 | |||
201 | static int nwpserial_verify_port(struct uart_port *port, | ||
202 | struct serial_struct *ser) | ||
203 | { | ||
204 | return -EINVAL; | ||
205 | } | ||
206 | |||
207 | static const char *nwpserial_type(struct uart_port *port) | ||
208 | { | ||
209 | return port->type == PORT_NWPSERIAL ? "nwpserial" : NULL; | ||
210 | } | ||
211 | |||
212 | static void nwpserial_set_termios(struct uart_port *port, | ||
213 | struct ktermios *termios, struct ktermios *old) | ||
214 | { | ||
215 | struct nwpserial_port *up; | ||
216 | up = container_of(port, struct nwpserial_port, port); | ||
217 | |||
218 | up->port.read_status_mask = NWPSERIAL_STATUS_RXVALID | ||
219 | | NWPSERIAL_STATUS_TXFULL; | ||
220 | |||
221 | up->port.ignore_status_mask = 0; | ||
222 | /* ignore all characters if CREAD is not set */ | ||
223 | if ((termios->c_cflag & CREAD) == 0) | ||
224 | up->port.ignore_status_mask |= NWPSERIAL_STATUS_RXVALID; | ||
225 | |||
226 | /* Copy back the old hardware settings */ | ||
227 | if (old) | ||
228 | tty_termios_copy_hw(termios, old); | ||
229 | } | ||
230 | |||
231 | static void nwpserial_break_ctl(struct uart_port *port, int ctl) | ||
232 | { | ||
233 | /* N/A */ | ||
234 | } | ||
235 | |||
236 | static void nwpserial_enable_ms(struct uart_port *port) | ||
237 | { | ||
238 | /* N/A */ | ||
239 | } | ||
240 | |||
241 | static void nwpserial_stop_rx(struct uart_port *port) | ||
242 | { | ||
243 | struct nwpserial_port *up; | ||
244 | up = container_of(port, struct nwpserial_port, port); | ||
245 | /* don't forward any more data (like !CREAD) */ | ||
246 | up->port.ignore_status_mask = NWPSERIAL_STATUS_RXVALID; | ||
247 | } | ||
248 | |||
249 | static void nwpserial_putchar(struct nwpserial_port *up, unsigned char c) | ||
250 | { | ||
251 | /* check if tx buffer is full */ | ||
252 | wait_for_bits(up, UART_LSR_THRE); | ||
253 | dcr_write(up->dcr_host, UART_TX, c); | ||
254 | up->port.icount.tx++; | ||
255 | } | ||
256 | |||
257 | static void nwpserial_start_tx(struct uart_port *port) | ||
258 | { | ||
259 | struct nwpserial_port *up; | ||
260 | struct circ_buf *xmit; | ||
261 | up = container_of(port, struct nwpserial_port, port); | ||
262 | xmit = &up->port.info->xmit; | ||
263 | |||
264 | if (port->x_char) { | ||
265 | nwpserial_putchar(up, up->port.x_char); | ||
266 | port->x_char = 0; | ||
267 | } | ||
268 | |||
269 | while (!(uart_circ_empty(xmit) || uart_tx_stopped(&up->port))) { | ||
270 | nwpserial_putchar(up, xmit->buf[xmit->tail]); | ||
271 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1); | ||
272 | } | ||
273 | } | ||
274 | |||
275 | static unsigned int nwpserial_get_mctrl(struct uart_port *port) | ||
276 | { | ||
277 | return 0; | ||
278 | } | ||
279 | |||
280 | static void nwpserial_set_mctrl(struct uart_port *port, unsigned int mctrl) | ||
281 | { | ||
282 | /* N/A */ | ||
283 | } | ||
284 | |||
285 | static void nwpserial_stop_tx(struct uart_port *port) | ||
286 | { | ||
287 | /* N/A */ | ||
288 | } | ||
289 | |||
290 | static unsigned int nwpserial_tx_empty(struct uart_port *port) | ||
291 | { | ||
292 | struct nwpserial_port *up; | ||
293 | unsigned long flags; | ||
294 | int ret; | ||
295 | up = container_of(port, struct nwpserial_port, port); | ||
296 | |||
297 | spin_lock_irqsave(&up->port.lock, flags); | ||
298 | ret = dcr_read(up->dcr_host, UART_LSR); | ||
299 | spin_unlock_irqrestore(&up->port.lock, flags); | ||
300 | |||
301 | return ret & UART_LSR_TEMT ? TIOCSER_TEMT : 0; | ||
302 | } | ||
303 | |||
304 | static struct uart_ops nwpserial_pops = { | ||
305 | .tx_empty = nwpserial_tx_empty, | ||
306 | .set_mctrl = nwpserial_set_mctrl, | ||
307 | .get_mctrl = nwpserial_get_mctrl, | ||
308 | .stop_tx = nwpserial_stop_tx, | ||
309 | .start_tx = nwpserial_start_tx, | ||
310 | .stop_rx = nwpserial_stop_rx, | ||
311 | .enable_ms = nwpserial_enable_ms, | ||
312 | .break_ctl = nwpserial_break_ctl, | ||
313 | .startup = nwpserial_startup, | ||
314 | .shutdown = nwpserial_shutdown, | ||
315 | .set_termios = nwpserial_set_termios, | ||
316 | .type = nwpserial_type, | ||
317 | .release_port = nwpserial_release_port, | ||
318 | .request_port = nwpserial_request_port, | ||
319 | .config_port = nwpserial_config_port, | ||
320 | .verify_port = nwpserial_verify_port, | ||
321 | }; | ||
322 | |||
323 | static struct uart_driver nwpserial_reg = { | ||
324 | .owner = THIS_MODULE, | ||
325 | .driver_name = "nwpserial", | ||
326 | .dev_name = "ttySQ", | ||
327 | .major = TTY_MAJOR, | ||
328 | .minor = 68, | ||
329 | .nr = NWPSERIAL_NR, | ||
330 | .cons = NWPSERIAL_CONSOLE, | ||
331 | }; | ||
332 | |||
333 | int nwpserial_register_port(struct uart_port *port) | ||
334 | { | ||
335 | struct nwpserial_port *up = NULL; | ||
336 | int ret = -1; | ||
337 | int i; | ||
338 | static int first = 1; | ||
339 | int dcr_len; | ||
340 | int dcr_base; | ||
341 | struct device_node *dn; | ||
342 | |||
343 | mutex_lock(&nwpserial_mutex); | ||
344 | |||
345 | dn = to_of_device(port->dev)->node; | ||
346 | if (dn == NULL) | ||
347 | goto out; | ||
348 | |||
349 | /* get dcr base. */ | ||
350 | dcr_base = dcr_resource_start(dn, 0); | ||
351 | |||
352 | /* find matching entry */ | ||
353 | for (i = 0; i < NWPSERIAL_NR; i++) | ||
354 | if (nwpserial_ports[i].port.iobase == dcr_base) { | ||
355 | up = &nwpserial_ports[i]; | ||
356 | break; | ||
357 | } | ||
358 | |||
359 | /* we didn't find a mtching entry, search for a free port */ | ||
360 | if (up == NULL) | ||
361 | for (i = 0; i < NWPSERIAL_NR; i++) | ||
362 | if (nwpserial_ports[i].port.type == PORT_UNKNOWN && | ||
363 | nwpserial_ports[i].port.iobase == 0) { | ||
364 | up = &nwpserial_ports[i]; | ||
365 | break; | ||
366 | } | ||
367 | |||
368 | if (up == NULL) { | ||
369 | ret = -EBUSY; | ||
370 | goto out; | ||
371 | } | ||
372 | |||
373 | if (first) | ||
374 | uart_register_driver(&nwpserial_reg); | ||
375 | first = 0; | ||
376 | |||
377 | up->port.membase = port->membase; | ||
378 | up->port.irq = port->irq; | ||
379 | up->port.uartclk = port->uartclk; | ||
380 | up->port.fifosize = port->fifosize; | ||
381 | up->port.regshift = port->regshift; | ||
382 | up->port.iotype = port->iotype; | ||
383 | up->port.flags = port->flags; | ||
384 | up->port.mapbase = port->mapbase; | ||
385 | up->port.private_data = port->private_data; | ||
386 | |||
387 | if (port->dev) | ||
388 | up->port.dev = port->dev; | ||
389 | |||
390 | if (up->port.iobase != dcr_base) { | ||
391 | up->port.ops = &nwpserial_pops; | ||
392 | up->port.fifosize = 16; | ||
393 | |||
394 | spin_lock_init(&up->port.lock); | ||
395 | |||
396 | up->port.iobase = dcr_base; | ||
397 | dcr_len = dcr_resource_len(dn, 0); | ||
398 | |||
399 | up->dcr_host = dcr_map(dn, dcr_base, dcr_len); | ||
400 | if (!DCR_MAP_OK(up->dcr_host)) { | ||
401 | printk(KERN_ERR "Cannot map DCR resources for NWPSERIAL"); | ||
402 | goto out; | ||
403 | } | ||
404 | } | ||
405 | |||
406 | ret = uart_add_one_port(&nwpserial_reg, &up->port); | ||
407 | if (ret == 0) | ||
408 | ret = up->port.line; | ||
409 | |||
410 | out: | ||
411 | mutex_unlock(&nwpserial_mutex); | ||
412 | |||
413 | return ret; | ||
414 | } | ||
415 | EXPORT_SYMBOL(nwpserial_register_port); | ||
416 | |||
417 | void nwpserial_unregister_port(int line) | ||
418 | { | ||
419 | struct nwpserial_port *up = &nwpserial_ports[line]; | ||
420 | mutex_lock(&nwpserial_mutex); | ||
421 | uart_remove_one_port(&nwpserial_reg, &up->port); | ||
422 | |||
423 | up->port.type = PORT_UNKNOWN; | ||
424 | |||
425 | mutex_unlock(&nwpserial_mutex); | ||
426 | } | ||
427 | EXPORT_SYMBOL(nwpserial_unregister_port); | ||
428 | |||
429 | #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE | ||
430 | static int __init nwpserial_console_init(void) | ||
431 | { | ||
432 | struct nwpserial_port *up = NULL; | ||
433 | struct device_node *dn; | ||
434 | const char *name; | ||
435 | int dcr_base; | ||
436 | int dcr_len; | ||
437 | int i; | ||
438 | |||
439 | /* search for a free port */ | ||
440 | for (i = 0; i < NWPSERIAL_NR; i++) | ||
441 | if (nwpserial_ports[i].port.type == PORT_UNKNOWN) { | ||
442 | up = &nwpserial_ports[i]; | ||
443 | break; | ||
444 | } | ||
445 | |||
446 | if (up == NULL) | ||
447 | return -1; | ||
448 | |||
449 | name = of_get_property(of_chosen, "linux,stdout-path", NULL); | ||
450 | if (name == NULL) | ||
451 | return -1; | ||
452 | |||
453 | dn = of_find_node_by_path(name); | ||
454 | if (!dn) | ||
455 | return -1; | ||
456 | |||
457 | spin_lock_init(&up->port.lock); | ||
458 | up->port.ops = &nwpserial_pops; | ||
459 | up->port.type = PORT_NWPSERIAL; | ||
460 | up->port.fifosize = 16; | ||
461 | |||
462 | dcr_base = dcr_resource_start(dn, 0); | ||
463 | dcr_len = dcr_resource_len(dn, 0); | ||
464 | up->port.iobase = dcr_base; | ||
465 | |||
466 | up->dcr_host = dcr_map(dn, dcr_base, dcr_len); | ||
467 | if (!DCR_MAP_OK(up->dcr_host)) { | ||
468 | printk("Cannot map DCR resources for SERIAL"); | ||
469 | return -1; | ||
470 | } | ||
471 | register_console(&nwpserial_console); | ||
472 | return 0; | ||
473 | } | ||
474 | console_initcall(nwpserial_console_init); | ||
475 | #endif /* CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL_CONSOLE */ | ||
diff --git a/drivers/serial/of_serial.c b/drivers/serial/of_serial.c index 8fa0ff561e9f..a821e3a3d664 100644 --- a/drivers/serial/of_serial.c +++ b/drivers/serial/of_serial.c | |||
@@ -14,6 +14,7 @@ | |||
14 | #include <linux/serial_core.h> | 14 | #include <linux/serial_core.h> |
15 | #include <linux/serial_8250.h> | 15 | #include <linux/serial_8250.h> |
16 | #include <linux/of_platform.h> | 16 | #include <linux/of_platform.h> |
17 | #include <linux/nwpserial.h> | ||
17 | 18 | ||
18 | #include <asm/prom.h> | 19 | #include <asm/prom.h> |
19 | 20 | ||
@@ -99,9 +100,16 @@ static int __devinit of_platform_serial_probe(struct of_device *ofdev, | |||
99 | goto out; | 100 | goto out; |
100 | 101 | ||
101 | switch (port_type) { | 102 | switch (port_type) { |
103 | #ifdef CONFIG_SERIAL_8250 | ||
102 | case PORT_8250 ... PORT_MAX_8250: | 104 | case PORT_8250 ... PORT_MAX_8250: |
103 | ret = serial8250_register_port(&port); | 105 | ret = serial8250_register_port(&port); |
104 | break; | 106 | break; |
107 | #endif | ||
108 | #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL | ||
109 | case PORT_NWPSERIAL: | ||
110 | ret = nwpserial_register_port(&port); | ||
111 | break; | ||
112 | #endif | ||
105 | default: | 113 | default: |
106 | /* need to add code for these */ | 114 | /* need to add code for these */ |
107 | case PORT_UNKNOWN: | 115 | case PORT_UNKNOWN: |
@@ -129,9 +137,16 @@ static int of_platform_serial_remove(struct of_device *ofdev) | |||
129 | { | 137 | { |
130 | struct of_serial_info *info = ofdev->dev.driver_data; | 138 | struct of_serial_info *info = ofdev->dev.driver_data; |
131 | switch (info->type) { | 139 | switch (info->type) { |
140 | #ifdef CONFIG_SERIAL_8250 | ||
132 | case PORT_8250 ... PORT_MAX_8250: | 141 | case PORT_8250 ... PORT_MAX_8250: |
133 | serial8250_unregister_port(info->line); | 142 | serial8250_unregister_port(info->line); |
134 | break; | 143 | break; |
144 | #endif | ||
145 | #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL | ||
146 | case PORT_NWPSERIAL: | ||
147 | nwpserial_unregister_port(info->line); | ||
148 | break; | ||
149 | #endif | ||
135 | default: | 150 | default: |
136 | /* need to add code for these */ | 151 | /* need to add code for these */ |
137 | break; | 152 | break; |
@@ -148,6 +163,10 @@ static struct of_device_id __devinitdata of_platform_serial_table[] = { | |||
148 | { .type = "serial", .compatible = "ns16450", .data = (void *)PORT_16450, }, | 163 | { .type = "serial", .compatible = "ns16450", .data = (void *)PORT_16450, }, |
149 | { .type = "serial", .compatible = "ns16550", .data = (void *)PORT_16550, }, | 164 | { .type = "serial", .compatible = "ns16550", .data = (void *)PORT_16550, }, |
150 | { .type = "serial", .compatible = "ns16750", .data = (void *)PORT_16750, }, | 165 | { .type = "serial", .compatible = "ns16750", .data = (void *)PORT_16750, }, |
166 | #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL | ||
167 | { .type = "serial", .compatible = "ibm,qpace-nwp-serial", | ||
168 | .data = (void *)PORT_NWPSERIAL, }, | ||
169 | #endif | ||
151 | { .type = "serial", .data = (void *)PORT_UNKNOWN, }, | 170 | { .type = "serial", .data = (void *)PORT_UNKNOWN, }, |
152 | { /* end of list */ }, | 171 | { /* end of list */ }, |
153 | }; | 172 | }; |
diff --git a/include/linux/nwpserial.h b/include/linux/nwpserial.h new file mode 100644 index 000000000000..9acb21572eaf --- /dev/null +++ b/include/linux/nwpserial.h | |||
@@ -0,0 +1,18 @@ | |||
1 | /* | ||
2 | * Serial Port driver for a NWP uart device | ||
3 | * | ||
4 | * Copyright (C) 2008 IBM Corp., Benjamin Krill <ben@codiert.org> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public License | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the License, or (at your option) any later version. | ||
10 | * | ||
11 | */ | ||
12 | #ifndef _NWPSERIAL_H | ||
13 | #define _NWPSERIAL_H | ||
14 | |||
15 | int nwpserial_register_port(struct uart_port *port); | ||
16 | void nwpserial_unregister_port(int line); | ||
17 | |||
18 | #endif /* _NWPSERIAL_H */ | ||
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index b4199841f1fc..90bbbf0b1161 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h | |||
@@ -161,6 +161,9 @@ | |||
161 | 161 | ||
162 | #define PORT_S3C6400 84 | 162 | #define PORT_S3C6400 84 |
163 | 163 | ||
164 | /* NWPSERIAL */ | ||
165 | #define PORT_NWPSERIAL 85 | ||
166 | |||
164 | #ifdef __KERNEL__ | 167 | #ifdef __KERNEL__ |
165 | 168 | ||
166 | #include <linux/compiler.h> | 169 | #include <linux/compiler.h> |