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acpiphp: Execute ACPI _REG method for hotadded devices
[linux/fpc-iii.git] / arch / arm / mach-omap2 / serial.c
blobe10a02df6e1d957d4d7bae0c986a164d938b2c0e
1 /*
2 * arch/arm/mach-omap2/serial.c
3 *
4 * OMAP2 serial support.
5 *
6 * Copyright (C) 2005-2008 Nokia Corporation
7 * Author: Paul Mundt <paul.mundt@nokia.com>
8 *
9 * Major rework for PM support by Kevin Hilman
10 *
11 * Based off of arch/arm/mach-omap/omap1/serial.c
12 *
13 * Copyright (C) 2009 Texas Instruments
14 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com
15 *
16 * This file is subject to the terms and conditions of the GNU General Public
17 * License. See the file "COPYING" in the main directory of this archive
18 * for more details.
19 */
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/serial_8250.h>
23 #include <linux/serial_reg.h>
24 #include <linux/clk.h>
25 #include <linux/io.h>
26
27 #include <plat/common.h>
28 #include <plat/board.h>
29 #include <plat/clock.h>
30 #include <plat/control.h>
31
32 #include "prm.h"
33 #include "pm.h"
34 #include "prm-regbits-34xx.h"
35
36 #define UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV 0x52
37 #define UART_OMAP_WER 0x17 /* Wake-up enable register */
38
39 /*
40 * NOTE: By default the serial timeout is disabled as it causes lost characters
41 * over the serial ports. This means that the UART clocks will stay on until
42 * disabled via sysfs. This also causes that any deeper omap sleep states are
43 * blocked.
44 */
45 #define DEFAULT_TIMEOUT 0
46
47 struct omap_uart_state {
48 int num;
49 int can_sleep;
50 struct timer_list timer;
51 u32 timeout;
52
53 void __iomem *wk_st;
54 void __iomem *wk_en;
55 u32 wk_mask;
56 u32 padconf;
57
58 struct clk *ick;
59 struct clk *fck;
60 int clocked;
61
62 struct plat_serial8250_port *p;
63 struct list_head node;
64 struct platform_device pdev;
65
66 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
67 int context_valid;
68
69 /* Registers to be saved/restored for OFF-mode */
70 u16 dll;
71 u16 dlh;
72 u16 ier;
73 u16 sysc;
74 u16 scr;
75 u16 wer;
76 #endif
77 };
78
79 static LIST_HEAD(uart_list);
80
81 static struct plat_serial8250_port serial_platform_data0[] = {
82 {
83 .mapbase = OMAP_UART1_BASE,
84 .irq = 72,
85 .flags = UPF_BOOT_AUTOCONF,
86 .iotype = UPIO_MEM,
87 .regshift = 2,
88 .uartclk = OMAP24XX_BASE_BAUD * 16,
89 }, {
90 .flags = 0
91 }
92 };
93
94 static struct plat_serial8250_port serial_platform_data1[] = {
95 {
96 .mapbase = OMAP_UART2_BASE,
97 .irq = 73,
98 .flags = UPF_BOOT_AUTOCONF,
99 .iotype = UPIO_MEM,
100 .regshift = 2,
101 .uartclk = OMAP24XX_BASE_BAUD * 16,
102 }, {
103 .flags = 0
104 }
105 };
106
107 static struct plat_serial8250_port serial_platform_data2[] = {
108 {
109 .mapbase = OMAP_UART3_BASE,
110 .irq = 74,
111 .flags = UPF_BOOT_AUTOCONF,
112 .iotype = UPIO_MEM,
113 .regshift = 2,
114 .uartclk = OMAP24XX_BASE_BAUD * 16,
115 }, {
116 .flags = 0
117 }
118 };
119
120 #ifdef CONFIG_ARCH_OMAP4
121 static struct plat_serial8250_port serial_platform_data3[] = {
122 {
123 .mapbase = OMAP_UART4_BASE,
124 .irq = 70,
125 .flags = UPF_BOOT_AUTOCONF,
126 .iotype = UPIO_MEM,
127 .regshift = 2,
128 .uartclk = OMAP24XX_BASE_BAUD * 16,
129 }, {
130 .flags = 0
131 }
132 };
133 #endif
134 static inline unsigned int __serial_read_reg(struct uart_port *up,
135 int offset)
136 {
137 offset <<= up->regshift;
138 return (unsigned int)__raw_readb(up->membase + offset);
139 }
140
141 static inline unsigned int serial_read_reg(struct plat_serial8250_port *up,
142 int offset)
143 {
144 offset <<= up->regshift;
145 return (unsigned int)__raw_readb(up->membase + offset);
146 }
147
148 static inline void serial_write_reg(struct plat_serial8250_port *p, int offset,
149 int value)
150 {
151 offset <<= p->regshift;
152 __raw_writeb(value, p->membase + offset);
153 }
154
155 /*
156 * Internal UARTs need to be initialized for the 8250 autoconfig to work
157 * properly. Note that the TX watermark initialization may not be needed
158 * once the 8250.c watermark handling code is merged.
159 */
160 static inline void __init omap_uart_reset(struct omap_uart_state *uart)
161 {
162 struct plat_serial8250_port *p = uart->p;
163
164 serial_write_reg(p, UART_OMAP_MDR1, 0x07);
165 serial_write_reg(p, UART_OMAP_SCR, 0x08);
166 serial_write_reg(p, UART_OMAP_MDR1, 0x00);
167 serial_write_reg(p, UART_OMAP_SYSC, (0x02 << 3) | (1 << 2) | (1 << 0));
168 }
169
170 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
171
172 static void omap_uart_save_context(struct omap_uart_state *uart)
173 {
174 u16 lcr = 0;
175 struct plat_serial8250_port *p = uart->p;
176
177 if (!enable_off_mode)
178 return;
179
180 lcr = serial_read_reg(p, UART_LCR);
181 serial_write_reg(p, UART_LCR, 0xBF);
182 uart->dll = serial_read_reg(p, UART_DLL);
183 uart->dlh = serial_read_reg(p, UART_DLM);
184 serial_write_reg(p, UART_LCR, lcr);
185 uart->ier = serial_read_reg(p, UART_IER);
186 uart->sysc = serial_read_reg(p, UART_OMAP_SYSC);
187 uart->scr = serial_read_reg(p, UART_OMAP_SCR);
188 uart->wer = serial_read_reg(p, UART_OMAP_WER);
189
190 uart->context_valid = 1;
191 }
192
193 static void omap_uart_restore_context(struct omap_uart_state *uart)
194 {
195 u16 efr = 0;
196 struct plat_serial8250_port *p = uart->p;
197
198 if (!enable_off_mode)
199 return;
200
201 if (!uart->context_valid)
202 return;
203
204 uart->context_valid = 0;
205
206 serial_write_reg(p, UART_OMAP_MDR1, 0x7);
207 serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */
208 efr = serial_read_reg(p, UART_EFR);
209 serial_write_reg(p, UART_EFR, UART_EFR_ECB);
210 serial_write_reg(p, UART_LCR, 0x0); /* Operational mode */
211 serial_write_reg(p, UART_IER, 0x0);
212 serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */
213 serial_write_reg(p, UART_DLL, uart->dll);
214 serial_write_reg(p, UART_DLM, uart->dlh);
215 serial_write_reg(p, UART_LCR, 0x0); /* Operational mode */
216 serial_write_reg(p, UART_IER, uart->ier);
217 serial_write_reg(p, UART_FCR, 0xA1);
218 serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */
219 serial_write_reg(p, UART_EFR, efr);
220 serial_write_reg(p, UART_LCR, UART_LCR_WLEN8);
221 serial_write_reg(p, UART_OMAP_SCR, uart->scr);
222 serial_write_reg(p, UART_OMAP_WER, uart->wer);
223 serial_write_reg(p, UART_OMAP_SYSC, uart->sysc);
224 serial_write_reg(p, UART_OMAP_MDR1, 0x00); /* UART 16x mode */
225 }
226 #else
227 static inline void omap_uart_save_context(struct omap_uart_state *uart) {}
228 static inline void omap_uart_restore_context(struct omap_uart_state *uart) {}
229 #endif /* CONFIG_PM && CONFIG_ARCH_OMAP3 */
230
231 static inline void omap_uart_enable_clocks(struct omap_uart_state *uart)
232 {
233 if (uart->clocked)
234 return;
235
236 clk_enable(uart->ick);
237 clk_enable(uart->fck);
238 uart->clocked = 1;
239 omap_uart_restore_context(uart);
240 }
241
242 #ifdef CONFIG_PM
243
244 static inline void omap_uart_disable_clocks(struct omap_uart_state *uart)
245 {
246 if (!uart->clocked)
247 return;
248
249 omap_uart_save_context(uart);
250 uart->clocked = 0;
251 clk_disable(uart->ick);
252 clk_disable(uart->fck);
253 }
254
255 static void omap_uart_enable_wakeup(struct omap_uart_state *uart)
256 {
257 /* Set wake-enable bit */
258 if (uart->wk_en && uart->wk_mask) {
259 u32 v = __raw_readl(uart->wk_en);
260 v |= uart->wk_mask;
261 __raw_writel(v, uart->wk_en);
262 }
263
264 /* Ensure IOPAD wake-enables are set */
265 if (cpu_is_omap34xx() && uart->padconf) {
266 u16 v = omap_ctrl_readw(uart->padconf);
267 v |= OMAP3_PADCONF_WAKEUPENABLE0;
268 omap_ctrl_writew(v, uart->padconf);
269 }
270 }
271
272 static void omap_uart_disable_wakeup(struct omap_uart_state *uart)
273 {
274 /* Clear wake-enable bit */
275 if (uart->wk_en && uart->wk_mask) {
276 u32 v = __raw_readl(uart->wk_en);
277 v &= ~uart->wk_mask;
278 __raw_writel(v, uart->wk_en);
279 }
280
281 /* Ensure IOPAD wake-enables are cleared */
282 if (cpu_is_omap34xx() && uart->padconf) {
283 u16 v = omap_ctrl_readw(uart->padconf);
284 v &= ~OMAP3_PADCONF_WAKEUPENABLE0;
285 omap_ctrl_writew(v, uart->padconf);
286 }
287 }
288
289 static void omap_uart_smart_idle_enable(struct omap_uart_state *uart,
290 int enable)
291 {
292 struct plat_serial8250_port *p = uart->p;
293 u16 sysc;
294
295 sysc = serial_read_reg(p, UART_OMAP_SYSC) & 0x7;
296 if (enable)
297 sysc |= 0x2 << 3;
298 else
299 sysc |= 0x1 << 3;
300
301 serial_write_reg(p, UART_OMAP_SYSC, sysc);
302 }
303
304 static void omap_uart_block_sleep(struct omap_uart_state *uart)
305 {
306 omap_uart_enable_clocks(uart);
307
308 omap_uart_smart_idle_enable(uart, 0);
309 uart->can_sleep = 0;
310 if (uart->timeout)
311 mod_timer(&uart->timer, jiffies + uart->timeout);
312 else
313 del_timer(&uart->timer);
314 }
315
316 static void omap_uart_allow_sleep(struct omap_uart_state *uart)
317 {
318 if (device_may_wakeup(&uart->pdev.dev))
319 omap_uart_enable_wakeup(uart);
320 else
321 omap_uart_disable_wakeup(uart);
322
323 if (!uart->clocked)
324 return;
325
326 omap_uart_smart_idle_enable(uart, 1);
327 uart->can_sleep = 1;
328 del_timer(&uart->timer);
329 }
330
331 static void omap_uart_idle_timer(unsigned long data)
332 {
333 struct omap_uart_state *uart = (struct omap_uart_state *)data;
334
335 omap_uart_allow_sleep(uart);
336 }
337
338 void omap_uart_prepare_idle(int num)
339 {
340 struct omap_uart_state *uart;
341
342 list_for_each_entry(uart, &uart_list, node) {
343 if (num == uart->num && uart->can_sleep) {
344 omap_uart_disable_clocks(uart);
345 return;
346 }
347 }
348 }
349
350 void omap_uart_resume_idle(int num)
351 {
352 struct omap_uart_state *uart;
353
354 list_for_each_entry(uart, &uart_list, node) {
355 if (num == uart->num) {
356 omap_uart_enable_clocks(uart);
357
358 /* Check for IO pad wakeup */
359 if (cpu_is_omap34xx() && uart->padconf) {
360 u16 p = omap_ctrl_readw(uart->padconf);
361
362 if (p & OMAP3_PADCONF_WAKEUPEVENT0)
363 omap_uart_block_sleep(uart);
364 }
365
366 /* Check for normal UART wakeup */
367 if (__raw_readl(uart->wk_st) & uart->wk_mask)
368 omap_uart_block_sleep(uart);
369 return;
370 }
371 }
372 }
373
374 void omap_uart_prepare_suspend(void)
375 {
376 struct omap_uart_state *uart;
377
378 list_for_each_entry(uart, &uart_list, node) {
379 omap_uart_allow_sleep(uart);
380 }
381 }
382
383 int omap_uart_can_sleep(void)
384 {
385 struct omap_uart_state *uart;
386 int can_sleep = 1;
387
388 list_for_each_entry(uart, &uart_list, node) {
389 if (!uart->clocked)
390 continue;
391
392 if (!uart->can_sleep) {
393 can_sleep = 0;
394 continue;
395 }
396
397 /* This UART can now safely sleep. */
398 omap_uart_allow_sleep(uart);
399 }
400
401 return can_sleep;
402 }
403
404 /**
405 * omap_uart_interrupt()
406 *
407 * This handler is used only to detect that *any* UART interrupt has
408 * occurred. It does _nothing_ to handle the interrupt. Rather,
409 * any UART interrupt will trigger the inactivity timer so the
410 * UART will not idle or sleep for its timeout period.
411 *
412 **/
413 static irqreturn_t omap_uart_interrupt(int irq, void *dev_id)
414 {
415 struct omap_uart_state *uart = dev_id;
416
417 omap_uart_block_sleep(uart);
418
419 return IRQ_NONE;
420 }
421
422 static void omap_uart_idle_init(struct omap_uart_state *uart)
423 {
424 struct plat_serial8250_port *p = uart->p;
425 int ret;
426
427 uart->can_sleep = 0;
428 uart->timeout = DEFAULT_TIMEOUT;
429 setup_timer(&uart->timer, omap_uart_idle_timer,
430 (unsigned long) uart);
431 if (uart->timeout)
432 mod_timer(&uart->timer, jiffies + uart->timeout);
433 omap_uart_smart_idle_enable(uart, 0);
434
435 if (cpu_is_omap34xx()) {
436 u32 mod = (uart->num == 2) ? OMAP3430_PER_MOD : CORE_MOD;
437 u32 wk_mask = 0;
438 u32 padconf = 0;
439
440 uart->wk_en = OMAP34XX_PRM_REGADDR(mod, PM_WKEN1);
441 uart->wk_st = OMAP34XX_PRM_REGADDR(mod, PM_WKST1);
442 switch (uart->num) {
443 case 0:
444 wk_mask = OMAP3430_ST_UART1_MASK;
445 padconf = 0x182;
446 break;
447 case 1:
448 wk_mask = OMAP3430_ST_UART2_MASK;
449 padconf = 0x17a;
450 break;
451 case 2:
452 wk_mask = OMAP3430_ST_UART3_MASK;
453 padconf = 0x19e;
454 break;
455 }
456 uart->wk_mask = wk_mask;
457 uart->padconf = padconf;
458 } else if (cpu_is_omap24xx()) {
459 u32 wk_mask = 0;
460
461 if (cpu_is_omap2430()) {
462 uart->wk_en = OMAP2430_PRM_REGADDR(CORE_MOD, PM_WKEN1);
463 uart->wk_st = OMAP2430_PRM_REGADDR(CORE_MOD, PM_WKST1);
464 } else if (cpu_is_omap2420()) {
465 uart->wk_en = OMAP2420_PRM_REGADDR(CORE_MOD, PM_WKEN1);
466 uart->wk_st = OMAP2420_PRM_REGADDR(CORE_MOD, PM_WKST1);
467 }
468 switch (uart->num) {
469 case 0:
470 wk_mask = OMAP24XX_ST_UART1_MASK;
471 break;
472 case 1:
473 wk_mask = OMAP24XX_ST_UART2_MASK;
474 break;
475 case 2:
476 wk_mask = OMAP24XX_ST_UART3_MASK;
477 break;
478 }
479 uart->wk_mask = wk_mask;
480 } else {
481 uart->wk_en = 0;
482 uart->wk_st = 0;
483 uart->wk_mask = 0;
484 uart->padconf = 0;
485 }
486
487 p->irqflags |= IRQF_SHARED;
488 ret = request_irq(p->irq, omap_uart_interrupt, IRQF_SHARED,
489 "serial idle", (void *)uart);
490 WARN_ON(ret);
491 }
492
493 void omap_uart_enable_irqs(int enable)
494 {
495 int ret;
496 struct omap_uart_state *uart;
497
498 list_for_each_entry(uart, &uart_list, node) {
499 if (enable)
500 ret = request_irq(uart->p->irq, omap_uart_interrupt,
501 IRQF_SHARED, "serial idle", (void *)uart);
502 else
503 free_irq(uart->p->irq, (void *)uart);
504 }
505 }
506
507 static ssize_t sleep_timeout_show(struct device *dev,
508 struct device_attribute *attr,
509 char *buf)
510 {
511 struct platform_device *pdev = container_of(dev,
512 struct platform_device, dev);
513 struct omap_uart_state *uart = container_of(pdev,
514 struct omap_uart_state, pdev);
515
516 return sprintf(buf, "%u\n", uart->timeout / HZ);
517 }
518
519 static ssize_t sleep_timeout_store(struct device *dev,
520 struct device_attribute *attr,
521 const char *buf, size_t n)
522 {
523 struct platform_device *pdev = container_of(dev,
524 struct platform_device, dev);
525 struct omap_uart_state *uart = container_of(pdev,
526 struct omap_uart_state, pdev);
527 unsigned int value;
528
529 if (sscanf(buf, "%u", &value) != 1) {
530 printk(KERN_ERR "sleep_timeout_store: Invalid value\n");
531 return -EINVAL;
532 }
533
534 uart->timeout = value * HZ;
535 if (uart->timeout)
536 mod_timer(&uart->timer, jiffies + uart->timeout);
537 else
538 /* A zero value means disable timeout feature */
539 omap_uart_block_sleep(uart);
540
541 return n;
542 }
543
544 DEVICE_ATTR(sleep_timeout, 0644, sleep_timeout_show, sleep_timeout_store);
545 #define DEV_CREATE_FILE(dev, attr) WARN_ON(device_create_file(dev, attr))
546 #else
547 static inline void omap_uart_idle_init(struct omap_uart_state *uart) {}
548 #define DEV_CREATE_FILE(dev, attr)
549 #endif /* CONFIG_PM */
550
551 static struct omap_uart_state omap_uart[] = {
552 {
553 .pdev = {
554 .name = "serial8250",
555 .id = PLAT8250_DEV_PLATFORM,
556 .dev = {
557 .platform_data = serial_platform_data0,
558 },
559 },
560 }, {
561 .pdev = {
562 .name = "serial8250",
563 .id = PLAT8250_DEV_PLATFORM1,
564 .dev = {
565 .platform_data = serial_platform_data1,
566 },
567 },
568 }, {
569 .pdev = {
570 .name = "serial8250",
571 .id = PLAT8250_DEV_PLATFORM2,
572 .dev = {
573 .platform_data = serial_platform_data2,
574 },
575 },
576 },
577 #ifdef CONFIG_ARCH_OMAP4
578 {
579 .pdev = {
580 .name = "serial8250",
581 .id = 3,
582 .dev = {
583 .platform_data = serial_platform_data3,
584 },
585 },
586 },
587 #endif
588 };
589
590 /*
591 * Override the default 8250 read handler: mem_serial_in()
592 * Empty RX fifo read causes an abort on omap3630 and omap4
593 * This function makes sure that an empty rx fifo is not read on these silicons
594 * (OMAP1/2/3430 are not affected)
595 */
596 static unsigned int serial_in_override(struct uart_port *up, int offset)
597 {
598 if (UART_RX == offset) {
599 unsigned int lsr;
600 lsr = __serial_read_reg(up, UART_LSR);
601 if (!(lsr & UART_LSR_DR))
602 return -EPERM;
603 }
604
605 return __serial_read_reg(up, offset);
606 }
607
608 void __init omap_serial_early_init(void)
609 {
610 int i;
611 char name[16];
612
613 /*
614 * Make sure the serial ports are muxed on at this point.
615 * You have to mux them off in device drivers later on
616 * if not needed.
617 */
618
619 for (i = 0; i < ARRAY_SIZE(omap_uart); i++) {
620 struct omap_uart_state *uart = &omap_uart[i];
621 struct platform_device *pdev = &uart->pdev;
622 struct device *dev = &pdev->dev;
623 struct plat_serial8250_port *p = dev->platform_data;
624
625 /*
626 * Module 4KB + L4 interconnect 4KB
627 * Static mapping, never released
628 */
629 p->membase = ioremap(p->mapbase, SZ_8K);
630 if (!p->membase) {
631 printk(KERN_ERR "ioremap failed for uart%i\n", i + 1);
632 continue;
633 }
634
635 sprintf(name, "uart%d_ick", i+1);
636 uart->ick = clk_get(NULL, name);
637 if (IS_ERR(uart->ick)) {
638 printk(KERN_ERR "Could not get uart%d_ick\n", i+1);
639 uart->ick = NULL;
640 }
641
642 sprintf(name, "uart%d_fck", i+1);
643 uart->fck = clk_get(NULL, name);
644 if (IS_ERR(uart->fck)) {
645 printk(KERN_ERR "Could not get uart%d_fck\n", i+1);
646 uart->fck = NULL;
647 }
648
649 /* FIXME: Remove this once the clkdev is ready */
650 if (!cpu_is_omap44xx()) {
651 if (!uart->ick || !uart->fck)
652 continue;
653 }
654
655 uart->num = i;
656 p->private_data = uart;
657 uart->p = p;
658
659 if (cpu_is_omap44xx())
660 p->irq += 32;
661 }
662 }
663
664 /**
665 * omap_serial_init_port() - initialize single serial port
666 * @port: serial port number (0-3)
667 *
668 * This function initialies serial driver for given @port only.
669 * Platforms can call this function instead of omap_serial_init()
670 * if they don't plan to use all available UARTs as serial ports.
671 *
672 * Don't mix calls to omap_serial_init_port() and omap_serial_init(),
673 * use only one of the two.
674 */
675 void __init omap_serial_init_port(int port)
676 {
677 struct omap_uart_state *uart;
678 struct platform_device *pdev;
679 struct device *dev;
680
681 BUG_ON(port < 0);
682 BUG_ON(port >= ARRAY_SIZE(omap_uart));
683
684 uart = &omap_uart[port];
685 pdev = &uart->pdev;
686 dev = &pdev->dev;
687
688 omap_uart_enable_clocks(uart);
689
690 omap_uart_reset(uart);
691 omap_uart_idle_init(uart);
692
693 list_add_tail(&uart->node, &uart_list);
694
695 if (WARN_ON(platform_device_register(pdev)))
696 return;
697
698 if ((cpu_is_omap34xx() && uart->padconf) ||
699 (uart->wk_en && uart->wk_mask)) {
700 device_init_wakeup(dev, true);
701 DEV_CREATE_FILE(dev, &dev_attr_sleep_timeout);
702 }
703
704 /* omap44xx: Never read empty UART fifo
705 * omap3xxx: Never read empty UART fifo on UARTs
706 * with IP rev >=0x52
707 */
708 if (cpu_is_omap44xx())
709 uart->p->serial_in = serial_in_override;
710 else if ((serial_read_reg(uart->p, UART_OMAP_MVER) & 0xFF)
711 >= UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV)
712 uart->p->serial_in = serial_in_override;
713 }
714
715 /**
716 * omap_serial_init() - intialize all supported serial ports
717 *
718 * Initializes all available UARTs as serial ports. Platforms
719 * can call this function when they want to have default behaviour
720 * for serial ports (e.g initialize them all as serial ports).
721 */
722 void __init omap_serial_init(void)
723 {
724 int i;
725
726 for (i = 0; i < ARRAY_SIZE(omap_uart); i++)
727 omap_serial_init_port(i);
728 }
Linux with added FPC-III support