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[ARM] Convert asm/io.h to linux/io.h
[thirdparty/linux.git] / arch / arm / plat-omap / usb.c
1 /*
2 * arch/arm/plat-omap/usb.c -- platform level USB initialization
3 *
4 * Copyright (C) 2004 Texas Instruments, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #undef DEBUG
22
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/types.h>
26 #include <linux/errno.h>
27 #include <linux/init.h>
28 #include <linux/platform_device.h>
29 #include <linux/usb/otg.h>
30 #include <linux/io.h>
31
32 #include <asm/irq.h>
33 #include <asm/system.h>
34 #include <mach/hardware.h>
35
36 #include <mach/control.h>
37 #include <mach/mux.h>
38 #include <mach/usb.h>
39 #include <mach/board.h>
40
41 #ifdef CONFIG_ARCH_OMAP1
42
43 #define INT_USB_IRQ_GEN IH2_BASE + 20
44 #define INT_USB_IRQ_NISO IH2_BASE + 30
45 #define INT_USB_IRQ_ISO IH2_BASE + 29
46 #define INT_USB_IRQ_HGEN INT_USB_HHC_1
47 #define INT_USB_IRQ_OTG IH2_BASE + 8
48
49 #else
50
51 #define INT_USB_IRQ_GEN INT_24XX_USB_IRQ_GEN
52 #define INT_USB_IRQ_NISO INT_24XX_USB_IRQ_NISO
53 #define INT_USB_IRQ_ISO INT_24XX_USB_IRQ_ISO
54 #define INT_USB_IRQ_HGEN INT_24XX_USB_IRQ_HGEN
55 #define INT_USB_IRQ_OTG INT_24XX_USB_IRQ_OTG
56
57 #endif
58
59
60 /* These routines should handle the standard chip-specific modes
61 * for usb0/1/2 ports, covering basic mux and transceiver setup.
62 *
63 * Some board-*.c files will need to set up additional mux options,
64 * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
65 */
66
67 /* TESTED ON:
68 * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
69 * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
70 * - 5912 OSK UDC, with *nonstandard* A-to-A cable
71 * - 1510 Innovator UDC with bundled usb0 cable
72 * - 1510 Innovator OHCI with bundled usb1/usb2 cable
73 * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
74 * - 1710 custom development board using alternate pin group
75 * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
76 */
77
78 /*-------------------------------------------------------------------------*/
79
80 #if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_USB_MUSB_OTG)
81
82 static struct otg_transceiver *xceiv;
83
84 /**
85 * otg_get_transceiver - find the (single) OTG transceiver driver
86 *
87 * Returns the transceiver driver, after getting a refcount to it; or
88 * null if there is no such transceiver. The caller is responsible for
89 * releasing that count.
90 */
91 struct otg_transceiver *otg_get_transceiver(void)
92 {
93 if (xceiv)
94 get_device(xceiv->dev);
95 return xceiv;
96 }
97 EXPORT_SYMBOL(otg_get_transceiver);
98
99 int otg_set_transceiver(struct otg_transceiver *x)
100 {
101 if (xceiv && x)
102 return -EBUSY;
103 xceiv = x;
104 return 0;
105 }
106 EXPORT_SYMBOL(otg_set_transceiver);
107
108 #endif
109
110 /*-------------------------------------------------------------------------*/
111
112 #if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_ARCH_OMAP15XX)
113
114 static void omap2_usb_devconf_clear(u8 port, u32 mask)
115 {
116 u32 r;
117
118 r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
119 r &= ~USBTXWRMODEI(port, mask);
120 omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
121 }
122
123 static void omap2_usb_devconf_set(u8 port, u32 mask)
124 {
125 u32 r;
126
127 r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
128 r |= USBTXWRMODEI(port, mask);
129 omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
130 }
131
132 static void omap2_usb2_disable_5pinbitll(void)
133 {
134 u32 r;
135
136 r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
137 r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) | USBT2TLL5PI);
138 omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
139 }
140
141 static void omap2_usb2_enable_5pinunitll(void)
142 {
143 u32 r;
144
145 r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
146 r |= USBTXWRMODEI(2, USB_UNIDIR_TLL) | USBT2TLL5PI;
147 omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
148 }
149
150 static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
151 {
152 u32 syscon1 = 0;
153
154 if (cpu_is_omap24xx())
155 omap2_usb_devconf_clear(0, USB_BIDIR_TLL);
156
157 if (nwires == 0) {
158 if (cpu_class_is_omap1() && !cpu_is_omap15xx()) {
159 u32 l;
160
161 /* pulldown D+/D- */
162 l = omap_readl(USB_TRANSCEIVER_CTRL);
163 l &= ~(3 << 1);
164 omap_writel(l, USB_TRANSCEIVER_CTRL);
165 }
166 return 0;
167 }
168
169 if (is_device) {
170 if (cpu_is_omap24xx())
171 omap_cfg_reg(J20_24XX_USB0_PUEN);
172 else
173 omap_cfg_reg(W4_USB_PUEN);
174 }
175
176 /* internal transceiver (unavailable on 17xx, 24xx) */
177 if (!cpu_class_is_omap2() && nwires == 2) {
178 u32 l;
179
180 // omap_cfg_reg(P9_USB_DP);
181 // omap_cfg_reg(R8_USB_DM);
182
183 if (cpu_is_omap15xx()) {
184 /* This works on 1510-Innovator */
185 return 0;
186 }
187
188 /* NOTES:
189 * - peripheral should configure VBUS detection!
190 * - only peripherals may use the internal D+/D- pulldowns
191 * - OTG support on this port not yet written
192 */
193
194 l = omap_readl(USB_TRANSCEIVER_CTRL);
195 l &= ~(7 << 4);
196 if (!is_device)
197 l |= (3 << 1);
198 omap_writel(l, USB_TRANSCEIVER_CTRL);
199
200 return 3 << 16;
201 }
202
203 /* alternate pin config, external transceiver */
204 if (cpu_is_omap15xx()) {
205 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
206 return 0;
207 }
208
209 if (cpu_is_omap24xx()) {
210 omap_cfg_reg(K18_24XX_USB0_DAT);
211 omap_cfg_reg(K19_24XX_USB0_TXEN);
212 omap_cfg_reg(J14_24XX_USB0_SE0);
213 if (nwires != 3)
214 omap_cfg_reg(J18_24XX_USB0_RCV);
215 } else {
216 omap_cfg_reg(V6_USB0_TXD);
217 omap_cfg_reg(W9_USB0_TXEN);
218 omap_cfg_reg(W5_USB0_SE0);
219 if (nwires != 3)
220 omap_cfg_reg(Y5_USB0_RCV);
221 }
222
223 /* NOTE: SPEED and SUSP aren't configured here. OTG hosts
224 * may be able to use I2C requests to set those bits along
225 * with VBUS switching and overcurrent detection.
226 */
227
228 if (cpu_class_is_omap1() && nwires != 6) {
229 u32 l;
230
231 l = omap_readl(USB_TRANSCEIVER_CTRL);
232 l &= ~CONF_USB2_UNI_R;
233 omap_writel(l, USB_TRANSCEIVER_CTRL);
234 }
235
236 switch (nwires) {
237 case 3:
238 syscon1 = 2;
239 if (cpu_is_omap24xx())
240 omap2_usb_devconf_set(0, USB_BIDIR);
241 break;
242 case 4:
243 syscon1 = 1;
244 if (cpu_is_omap24xx())
245 omap2_usb_devconf_set(0, USB_BIDIR);
246 break;
247 case 6:
248 syscon1 = 3;
249 if (cpu_is_omap24xx()) {
250 omap_cfg_reg(J19_24XX_USB0_VP);
251 omap_cfg_reg(K20_24XX_USB0_VM);
252 omap2_usb_devconf_set(0, USB_UNIDIR);
253 } else {
254 u32 l;
255
256 omap_cfg_reg(AA9_USB0_VP);
257 omap_cfg_reg(R9_USB0_VM);
258 l = omap_readl(USB_TRANSCEIVER_CTRL);
259 l |= CONF_USB2_UNI_R;
260 omap_writel(l, USB_TRANSCEIVER_CTRL);
261 }
262 break;
263 default:
264 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
265 0, nwires);
266 }
267 return syscon1 << 16;
268 }
269
270 static u32 __init omap_usb1_init(unsigned nwires)
271 {
272 u32 syscon1 = 0;
273
274 if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6) {
275 u32 l;
276
277 l = omap_readl(USB_TRANSCEIVER_CTRL);
278 l &= ~CONF_USB1_UNI_R;
279 omap_writel(l, USB_TRANSCEIVER_CTRL);
280 }
281 if (cpu_is_omap24xx())
282 omap2_usb_devconf_clear(1, USB_BIDIR_TLL);
283
284 if (nwires == 0)
285 return 0;
286
287 /* external transceiver */
288 if (cpu_class_is_omap1()) {
289 omap_cfg_reg(USB1_TXD);
290 omap_cfg_reg(USB1_TXEN);
291 if (nwires != 3)
292 omap_cfg_reg(USB1_RCV);
293 }
294
295 if (cpu_is_omap15xx()) {
296 omap_cfg_reg(USB1_SEO);
297 omap_cfg_reg(USB1_SPEED);
298 // SUSP
299 } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
300 omap_cfg_reg(W13_1610_USB1_SE0);
301 omap_cfg_reg(R13_1610_USB1_SPEED);
302 // SUSP
303 } else if (cpu_is_omap1710()) {
304 omap_cfg_reg(R13_1710_USB1_SE0);
305 // SUSP
306 } else if (cpu_is_omap24xx()) {
307 /* NOTE: board-specific code must set up pin muxing for usb1,
308 * since each signal could come out on either of two balls.
309 */
310 } else {
311 pr_debug("usb%d cpu unrecognized\n", 1);
312 return 0;
313 }
314
315 switch (nwires) {
316 case 2:
317 if (!cpu_is_omap24xx())
318 goto bad;
319 /* NOTE: board-specific code must override this setting if
320 * this TLL link is not using DP/DM
321 */
322 syscon1 = 1;
323 omap2_usb_devconf_set(1, USB_BIDIR_TLL);
324 break;
325 case 3:
326 syscon1 = 2;
327 if (cpu_is_omap24xx())
328 omap2_usb_devconf_set(1, USB_BIDIR);
329 break;
330 case 4:
331 syscon1 = 1;
332 if (cpu_is_omap24xx())
333 omap2_usb_devconf_set(1, USB_BIDIR);
334 break;
335 case 6:
336 if (cpu_is_omap24xx())
337 goto bad;
338 syscon1 = 3;
339 omap_cfg_reg(USB1_VP);
340 omap_cfg_reg(USB1_VM);
341 if (!cpu_is_omap15xx()) {
342 u32 l;
343
344 l = omap_readl(USB_TRANSCEIVER_CTRL);
345 l |= CONF_USB1_UNI_R;
346 omap_writel(l, USB_TRANSCEIVER_CTRL);
347 }
348 break;
349 default:
350 bad:
351 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
352 1, nwires);
353 }
354 return syscon1 << 20;
355 }
356
357 static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup)
358 {
359 u32 syscon1 = 0;
360
361 if (cpu_is_omap24xx()) {
362 omap2_usb2_disable_5pinbitll();
363 alt_pingroup = 0;
364 }
365
366 /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
367 if (alt_pingroup || nwires == 0)
368 return 0;
369
370 if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6) {
371 u32 l;
372
373 l = omap_readl(USB_TRANSCEIVER_CTRL);
374 l &= ~CONF_USB2_UNI_R;
375 omap_writel(l, USB_TRANSCEIVER_CTRL);
376 }
377
378 /* external transceiver */
379 if (cpu_is_omap15xx()) {
380 omap_cfg_reg(USB2_TXD);
381 omap_cfg_reg(USB2_TXEN);
382 omap_cfg_reg(USB2_SEO);
383 if (nwires != 3)
384 omap_cfg_reg(USB2_RCV);
385 /* there is no USB2_SPEED */
386 } else if (cpu_is_omap16xx()) {
387 omap_cfg_reg(V6_USB2_TXD);
388 omap_cfg_reg(W9_USB2_TXEN);
389 omap_cfg_reg(W5_USB2_SE0);
390 if (nwires != 3)
391 omap_cfg_reg(Y5_USB2_RCV);
392 // FIXME omap_cfg_reg(USB2_SPEED);
393 } else if (cpu_is_omap24xx()) {
394 omap_cfg_reg(Y11_24XX_USB2_DAT);
395 omap_cfg_reg(AA10_24XX_USB2_SE0);
396 if (nwires > 2)
397 omap_cfg_reg(AA12_24XX_USB2_TXEN);
398 if (nwires > 3)
399 omap_cfg_reg(AA6_24XX_USB2_RCV);
400 } else {
401 pr_debug("usb%d cpu unrecognized\n", 1);
402 return 0;
403 }
404 // if (cpu_class_is_omap1()) omap_cfg_reg(USB2_SUSP);
405
406 switch (nwires) {
407 case 2:
408 if (!cpu_is_omap24xx())
409 goto bad;
410 /* NOTE: board-specific code must override this setting if
411 * this TLL link is not using DP/DM
412 */
413 syscon1 = 1;
414 omap2_usb_devconf_set(2, USB_BIDIR_TLL);
415 break;
416 case 3:
417 syscon1 = 2;
418 if (cpu_is_omap24xx())
419 omap2_usb_devconf_set(2, USB_BIDIR);
420 break;
421 case 4:
422 syscon1 = 1;
423 if (cpu_is_omap24xx())
424 omap2_usb_devconf_set(2, USB_BIDIR);
425 break;
426 case 5:
427 if (!cpu_is_omap24xx())
428 goto bad;
429 omap_cfg_reg(AA4_24XX_USB2_TLLSE0);
430 /* NOTE: board-specific code must override this setting if
431 * this TLL link is not using DP/DM. Something must also
432 * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
433 */
434 syscon1 = 3;
435 omap2_usb2_enable_5pinunitll();
436 break;
437 case 6:
438 if (cpu_is_omap24xx())
439 goto bad;
440 syscon1 = 3;
441 if (cpu_is_omap15xx()) {
442 omap_cfg_reg(USB2_VP);
443 omap_cfg_reg(USB2_VM);
444 } else {
445 u32 l;
446
447 omap_cfg_reg(AA9_USB2_VP);
448 omap_cfg_reg(R9_USB2_VM);
449 l = omap_readl(USB_TRANSCEIVER_CTRL);
450 l |= CONF_USB2_UNI_R;
451 omap_writel(l, USB_TRANSCEIVER_CTRL);
452 }
453 break;
454 default:
455 bad:
456 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
457 2, nwires);
458 }
459 return syscon1 << 24;
460 }
461
462 #endif
463
464 /*-------------------------------------------------------------------------*/
465
466 #if defined(CONFIG_USB_GADGET_OMAP) || \
467 defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) || \
468 (defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG))
469 static void usb_release(struct device *dev)
470 {
471 /* normally not freed */
472 }
473 #endif
474
475 #ifdef CONFIG_USB_GADGET_OMAP
476
477 static struct resource udc_resources[] = {
478 /* order is significant! */
479 { /* registers */
480 .start = UDC_BASE,
481 .end = UDC_BASE + 0xff,
482 .flags = IORESOURCE_MEM,
483 }, { /* general IRQ */
484 .start = INT_USB_IRQ_GEN,
485 .flags = IORESOURCE_IRQ,
486 }, { /* PIO IRQ */
487 .start = INT_USB_IRQ_NISO,
488 .flags = IORESOURCE_IRQ,
489 }, { /* SOF IRQ */
490 .start = INT_USB_IRQ_ISO,
491 .flags = IORESOURCE_IRQ,
492 },
493 };
494
495 static u64 udc_dmamask = ~(u32)0;
496
497 static struct platform_device udc_device = {
498 .name = "omap_udc",
499 .id = -1,
500 .dev = {
501 .release = usb_release,
502 .dma_mask = &udc_dmamask,
503 .coherent_dma_mask = 0xffffffff,
504 },
505 .num_resources = ARRAY_SIZE(udc_resources),
506 .resource = udc_resources,
507 };
508
509 #endif
510
511 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
512
513 /* The dmamask must be set for OHCI to work */
514 static u64 ohci_dmamask = ~(u32)0;
515
516 static struct resource ohci_resources[] = {
517 {
518 .start = OMAP_OHCI_BASE,
519 .end = OMAP_OHCI_BASE + 0xff,
520 .flags = IORESOURCE_MEM,
521 },
522 {
523 .start = INT_USB_IRQ_HGEN,
524 .flags = IORESOURCE_IRQ,
525 },
526 };
527
528 static struct platform_device ohci_device = {
529 .name = "ohci",
530 .id = -1,
531 .dev = {
532 .release = usb_release,
533 .dma_mask = &ohci_dmamask,
534 .coherent_dma_mask = 0xffffffff,
535 },
536 .num_resources = ARRAY_SIZE(ohci_resources),
537 .resource = ohci_resources,
538 };
539
540 #endif
541
542 #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
543
544 static struct resource otg_resources[] = {
545 /* order is significant! */
546 {
547 .start = OTG_BASE,
548 .end = OTG_BASE + 0xff,
549 .flags = IORESOURCE_MEM,
550 }, {
551 .start = INT_USB_IRQ_OTG,
552 .flags = IORESOURCE_IRQ,
553 },
554 };
555
556 static struct platform_device otg_device = {
557 .name = "omap_otg",
558 .id = -1,
559 .dev = {
560 .release = usb_release,
561 },
562 .num_resources = ARRAY_SIZE(otg_resources),
563 .resource = otg_resources,
564 };
565
566 #endif
567
568 /*-------------------------------------------------------------------------*/
569
570 // FIXME correct answer depends on hmc_mode,
571 // as does (on omap1) any nonzero value for config->otg port number
572 #ifdef CONFIG_USB_GADGET_OMAP
573 #define is_usb0_device(config) 1
574 #else
575 #define is_usb0_device(config) 0
576 #endif
577
578 /*-------------------------------------------------------------------------*/
579
580 #ifdef CONFIG_ARCH_OMAP_OTG
581
582 void __init
583 omap_otg_init(struct omap_usb_config *config)
584 {
585 u32 syscon;
586 int status;
587 int alt_pingroup = 0;
588
589 /* NOTE: no bus or clock setup (yet?) */
590
591 syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
592 if (!(syscon & OTG_RESET_DONE))
593 pr_debug("USB resets not complete?\n");
594
595 //omap_writew(0, OTG_IRQ_EN);
596
597 /* pin muxing and transceiver pinouts */
598 if (config->pins[0] > 2) /* alt pingroup 2 */
599 alt_pingroup = 1;
600 syscon |= omap_usb0_init(config->pins[0], is_usb0_device(config));
601 syscon |= omap_usb1_init(config->pins[1]);
602 syscon |= omap_usb2_init(config->pins[2], alt_pingroup);
603 pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
604 omap_writel(syscon, OTG_SYSCON_1);
605
606 syscon = config->hmc_mode;
607 syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
608 #ifdef CONFIG_USB_OTG
609 if (config->otg)
610 syscon |= OTG_EN;
611 #endif
612 if (cpu_class_is_omap1())
613 pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
614 omap_readl(USB_TRANSCEIVER_CTRL));
615 pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
616 omap_writel(syscon, OTG_SYSCON_2);
617
618 printk("USB: hmc %d", config->hmc_mode);
619 if (!alt_pingroup)
620 printk(", usb2 alt %d wires", config->pins[2]);
621 else if (config->pins[0])
622 printk(", usb0 %d wires%s", config->pins[0],
623 is_usb0_device(config) ? " (dev)" : "");
624 if (config->pins[1])
625 printk(", usb1 %d wires", config->pins[1]);
626 if (!alt_pingroup && config->pins[2])
627 printk(", usb2 %d wires", config->pins[2]);
628 if (config->otg)
629 printk(", Mini-AB on usb%d", config->otg - 1);
630 printk("\n");
631
632 if (cpu_class_is_omap1()) {
633 u16 w;
634
635 /* leave USB clocks/controllers off until needed */
636 w = omap_readw(ULPD_SOFT_REQ);
637 w &= ~SOFT_USB_CLK_REQ;
638 omap_writew(w, ULPD_SOFT_REQ);
639
640 w = omap_readw(ULPD_CLOCK_CTRL);
641 w &= ~USB_MCLK_EN;
642 w |= DIS_USB_PVCI_CLK;
643 omap_writew(w, ULPD_CLOCK_CTRL);
644 }
645 syscon = omap_readl(OTG_SYSCON_1);
646 syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
647
648 #ifdef CONFIG_USB_GADGET_OMAP
649 if (config->otg || config->register_dev) {
650 syscon &= ~DEV_IDLE_EN;
651 udc_device.dev.platform_data = config;
652 /* FIXME patch IRQ numbers for omap730 */
653 status = platform_device_register(&udc_device);
654 if (status)
655 pr_debug("can't register UDC device, %d\n", status);
656 }
657 #endif
658
659 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
660 if (config->otg || config->register_host) {
661 syscon &= ~HST_IDLE_EN;
662 ohci_device.dev.platform_data = config;
663 if (cpu_is_omap730())
664 ohci_resources[1].start = INT_730_USB_HHC_1;
665 status = platform_device_register(&ohci_device);
666 if (status)
667 pr_debug("can't register OHCI device, %d\n", status);
668 }
669 #endif
670
671 #ifdef CONFIG_USB_OTG
672 if (config->otg) {
673 syscon &= ~OTG_IDLE_EN;
674 otg_device.dev.platform_data = config;
675 if (cpu_is_omap730())
676 otg_resources[1].start = INT_730_USB_OTG;
677 status = platform_device_register(&otg_device);
678 if (status)
679 pr_debug("can't register OTG device, %d\n", status);
680 }
681 #endif
682 pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
683 omap_writel(syscon, OTG_SYSCON_1);
684
685 status = 0;
686 }
687
688 #else
689 static inline void omap_otg_init(struct omap_usb_config *config) {}
690 #endif
691
692 /*-------------------------------------------------------------------------*/
693
694 #ifdef CONFIG_ARCH_OMAP15XX
695
696 /* ULPD_DPLL_CTRL */
697 #define DPLL_IOB (1 << 13)
698 #define DPLL_PLL_ENABLE (1 << 4)
699 #define DPLL_LOCK (1 << 0)
700
701 /* ULPD_APLL_CTRL */
702 #define APLL_NDPLL_SWITCH (1 << 0)
703
704
705 static void __init omap_1510_usb_init(struct omap_usb_config *config)
706 {
707 unsigned int val;
708 u16 w;
709
710 omap_usb0_init(config->pins[0], is_usb0_device(config));
711 omap_usb1_init(config->pins[1]);
712 omap_usb2_init(config->pins[2], 0);
713
714 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
715 val |= (config->hmc_mode << 1);
716 omap_writel(val, MOD_CONF_CTRL_0);
717
718 printk("USB: hmc %d", config->hmc_mode);
719 if (config->pins[0])
720 printk(", usb0 %d wires%s", config->pins[0],
721 is_usb0_device(config) ? " (dev)" : "");
722 if (config->pins[1])
723 printk(", usb1 %d wires", config->pins[1]);
724 if (config->pins[2])
725 printk(", usb2 %d wires", config->pins[2]);
726 printk("\n");
727
728 /* use DPLL for 48 MHz function clock */
729 pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
730 omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
731
732 w = omap_readw(ULPD_APLL_CTRL);
733 w &= ~APLL_NDPLL_SWITCH;
734 omap_writew(w, ULPD_APLL_CTRL);
735
736 w = omap_readw(ULPD_DPLL_CTRL);
737 w |= DPLL_IOB | DPLL_PLL_ENABLE;
738 omap_writew(w, ULPD_DPLL_CTRL);
739
740 w = omap_readw(ULPD_SOFT_REQ);
741 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
742 omap_writew(w, ULPD_SOFT_REQ);
743
744 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
745 cpu_relax();
746
747 #ifdef CONFIG_USB_GADGET_OMAP
748 if (config->register_dev) {
749 int status;
750
751 udc_device.dev.platform_data = config;
752 status = platform_device_register(&udc_device);
753 if (status)
754 pr_debug("can't register UDC device, %d\n", status);
755 /* udc driver gates 48MHz by D+ pullup */
756 }
757 #endif
758
759 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
760 if (config->register_host) {
761 int status;
762
763 ohci_device.dev.platform_data = config;
764 status = platform_device_register(&ohci_device);
765 if (status)
766 pr_debug("can't register OHCI device, %d\n", status);
767 /* hcd explicitly gates 48MHz */
768 }
769 #endif
770 }
771
772 #else
773 static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
774 #endif
775
776 /*-------------------------------------------------------------------------*/
777
778 static struct omap_usb_config platform_data;
779
780 static int __init
781 omap_usb_init(void)
782 {
783 const struct omap_usb_config *config;
784
785 config = omap_get_config(OMAP_TAG_USB, struct omap_usb_config);
786 if (config == NULL) {
787 printk(KERN_ERR "USB: No board-specific "
788 "platform config found\n");
789 return -ENODEV;
790 }
791 platform_data = *config;
792
793 if (cpu_is_omap730() || cpu_is_omap16xx() || cpu_is_omap24xx())
794 omap_otg_init(&platform_data);
795 else if (cpu_is_omap15xx())
796 omap_1510_usb_init(&platform_data);
797 else {
798 printk(KERN_ERR "USB: No init for your chip yet\n");
799 return -ENODEV;
800 }
801 return 0;
802 }
803
804 subsys_initcall(omap_usb_init);
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