Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
[linux-2.6] / 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
31 #include <asm/io.h>
32 #include <asm/irq.h>
33 #include <asm/system.h>
34 #include <asm/hardware.h>
35
36 #include <asm/arch/control.h>
37 #include <asm/arch/mux.h>
38 #include <asm/arch/usb.h>
39 #include <asm/arch/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);