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21#include <linux/module.h>
22#include <linux/kernel.h>
23#include <linux/init.h>
24#include <linux/platform_device.h>
25#include <linux/io.h>
26
27#include <asm/irq.h>
28
29#include <mach/mux.h>
30
31#include <mach/usb.h>
32
33#include "common.h"
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53#define INT_USB_IRQ_GEN IH2_BASE + 20
54#define INT_USB_IRQ_NISO IH2_BASE + 30
55#define INT_USB_IRQ_ISO IH2_BASE + 29
56#define INT_USB_IRQ_HGEN INT_USB_HHC_1
57#define INT_USB_IRQ_OTG IH2_BASE + 8
58
59#ifdef CONFIG_ARCH_OMAP_OTG
60
61void __init
62omap_otg_init(struct omap_usb_config *config)
63{
64 u32 syscon;
65 int alt_pingroup = 0;
66
67
68
69 syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
70 if (!(syscon & OTG_RESET_DONE))
71 pr_debug("USB resets not complete?\n");
72
73
74
75
76 if (config->pins[0] > 2)
77 alt_pingroup = 1;
78 syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
79 syscon |= config->usb1_init(config->pins[1]);
80 syscon |= config->usb2_init(config->pins[2], alt_pingroup);
81 pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
82 omap_writel(syscon, OTG_SYSCON_1);
83
84 syscon = config->hmc_mode;
85 syscon |= USBX_SYNCHRO | (4 << 16) ;
86#ifdef CONFIG_USB_OTG
87 if (config->otg)
88 syscon |= OTG_EN;
89#endif
90 if (cpu_class_is_omap1())
91 pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
92 omap_readl(USB_TRANSCEIVER_CTRL));
93 pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
94 omap_writel(syscon, OTG_SYSCON_2);
95
96 printk("USB: hmc %d", config->hmc_mode);
97 if (!alt_pingroup)
98 printk(", usb2 alt %d wires", config->pins[2]);
99 else if (config->pins[0])
100 printk(", usb0 %d wires%s", config->pins[0],
101 is_usb0_device(config) ? " (dev)" : "");
102 if (config->pins[1])
103 printk(", usb1 %d wires", config->pins[1]);
104 if (!alt_pingroup && config->pins[2])
105 printk(", usb2 %d wires", config->pins[2]);
106 if (config->otg)
107 printk(", Mini-AB on usb%d", config->otg - 1);
108 printk("\n");
109
110 if (cpu_class_is_omap1()) {
111 u16 w;
112
113
114 w = omap_readw(ULPD_SOFT_REQ);
115 w &= ~SOFT_USB_CLK_REQ;
116 omap_writew(w, ULPD_SOFT_REQ);
117
118 w = omap_readw(ULPD_CLOCK_CTRL);
119 w &= ~USB_MCLK_EN;
120 w |= DIS_USB_PVCI_CLK;
121 omap_writew(w, ULPD_CLOCK_CTRL);
122 }
123 syscon = omap_readl(OTG_SYSCON_1);
124 syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
125
126#if IS_ENABLED(CONFIG_USB_OMAP)
127 if (config->otg || config->register_dev) {
128 struct platform_device *udc_device = config->udc_device;
129 int status;
130
131 syscon &= ~DEV_IDLE_EN;
132 udc_device->dev.platform_data = config;
133 status = platform_device_register(udc_device);
134 if (status)
135 pr_debug("can't register UDC device, %d\n", status);
136 }
137#endif
138
139#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
140 if (config->otg || config->register_host) {
141 struct platform_device *ohci_device = config->ohci_device;
142 int status;
143
144 syscon &= ~HST_IDLE_EN;
145 ohci_device->dev.platform_data = config;
146 status = platform_device_register(ohci_device);
147 if (status)
148 pr_debug("can't register OHCI device, %d\n", status);
149 }
150#endif
151
152#ifdef CONFIG_USB_OTG
153 if (config->otg) {
154 struct platform_device *otg_device = config->otg_device;
155 int status;
156
157 syscon &= ~OTG_IDLE_EN;
158 otg_device->dev.platform_data = config;
159 status = platform_device_register(otg_device);
160 if (status)
161 pr_debug("can't register OTG device, %d\n", status);
162 }
163#endif
164 pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
165 omap_writel(syscon, OTG_SYSCON_1);
166}
167
168#else
169void omap_otg_init(struct omap_usb_config *config) {}
170#endif
171
172#if IS_ENABLED(CONFIG_USB_OMAP)
173
174static struct resource udc_resources[] = {
175
176 {
177 .start = UDC_BASE,
178 .end = UDC_BASE + 0xff,
179 .flags = IORESOURCE_MEM,
180 }, {
181 .start = INT_USB_IRQ_GEN,
182 .flags = IORESOURCE_IRQ,
183 }, {
184 .start = INT_USB_IRQ_NISO,
185 .flags = IORESOURCE_IRQ,
186 }, {
187 .start = INT_USB_IRQ_ISO,
188 .flags = IORESOURCE_IRQ,
189 },
190};
191
192static u64 udc_dmamask = ~(u32)0;
193
194static struct platform_device udc_device = {
195 .name = "omap_udc",
196 .id = -1,
197 .dev = {
198 .dma_mask = &udc_dmamask,
199 .coherent_dma_mask = 0xffffffff,
200 },
201 .num_resources = ARRAY_SIZE(udc_resources),
202 .resource = udc_resources,
203};
204
205static inline void udc_device_init(struct omap_usb_config *pdata)
206{
207
208 if(cpu_is_omap7xx()) {
209 udc_resources[1].start = INT_7XX_USB_GENI;
210 udc_resources[2].start = INT_7XX_USB_NON_ISO;
211 udc_resources[3].start = INT_7XX_USB_ISO;
212 }
213 pdata->udc_device = &udc_device;
214}
215
216#else
217
218static inline void udc_device_init(struct omap_usb_config *pdata)
219{
220}
221
222#endif
223
224#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
225
226
227static u64 ohci_dmamask = ~(u32)0;
228
229static struct resource ohci_resources[] = {
230 {
231 .start = OMAP_OHCI_BASE,
232 .end = OMAP_OHCI_BASE + 0xff,
233 .flags = IORESOURCE_MEM,
234 },
235 {
236 .start = INT_USB_IRQ_HGEN,
237 .flags = IORESOURCE_IRQ,
238 },
239};
240
241static struct platform_device ohci_device = {
242 .name = "ohci",
243 .id = -1,
244 .dev = {
245 .dma_mask = &ohci_dmamask,
246 .coherent_dma_mask = 0xffffffff,
247 },
248 .num_resources = ARRAY_SIZE(ohci_resources),
249 .resource = ohci_resources,
250};
251
252static inline void ohci_device_init(struct omap_usb_config *pdata)
253{
254 if (cpu_is_omap7xx())
255 ohci_resources[1].start = INT_7XX_USB_HHC_1;
256 pdata->ohci_device = &ohci_device;
257 pdata->ocpi_enable = &ocpi_enable;
258}
259
260#else
261
262static inline void ohci_device_init(struct omap_usb_config *pdata)
263{
264}
265
266#endif
267
268#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
269
270static struct resource otg_resources[] = {
271
272 {
273 .start = OTG_BASE,
274 .end = OTG_BASE + 0xff,
275 .flags = IORESOURCE_MEM,
276 }, {
277 .start = INT_USB_IRQ_OTG,
278 .flags = IORESOURCE_IRQ,
279 },
280};
281
282static struct platform_device otg_device = {
283 .name = "omap_otg",
284 .id = -1,
285 .num_resources = ARRAY_SIZE(otg_resources),
286 .resource = otg_resources,
287};
288
289static inline void otg_device_init(struct omap_usb_config *pdata)
290{
291 if (cpu_is_omap7xx())
292 otg_resources[1].start = INT_7XX_USB_OTG;
293 pdata->otg_device = &otg_device;
294}
295
296#else
297
298static inline void otg_device_init(struct omap_usb_config *pdata)
299{
300}
301
302#endif
303
304static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
305{
306 u32 syscon1 = 0;
307
308 if (nwires == 0) {
309 if (!cpu_is_omap15xx()) {
310 u32 l;
311
312
313 l = omap_readl(USB_TRANSCEIVER_CTRL);
314 l &= ~(3 << 1);
315 omap_writel(l, USB_TRANSCEIVER_CTRL);
316 }
317 return 0;
318 }
319
320 if (is_device) {
321 if (cpu_is_omap7xx()) {
322 omap_cfg_reg(AA17_7XX_USB_DM);
323 omap_cfg_reg(W16_7XX_USB_PU_EN);
324 omap_cfg_reg(W17_7XX_USB_VBUSI);
325 omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
326 omap_cfg_reg(W19_7XX_USB_DCRST);
327 } else
328 omap_cfg_reg(W4_USB_PUEN);
329 }
330
331 if (nwires == 2) {
332 u32 l;
333
334
335
336
337 if (cpu_is_omap15xx()) {
338
339 return 0;
340 }
341
342
343
344
345
346
347
348
349 if (!cpu_is_omap7xx()) {
350 l = omap_readl(USB_TRANSCEIVER_CTRL);
351 l &= ~(7 << 4);
352 if (!is_device)
353 l |= (3 << 1);
354 omap_writel(l, USB_TRANSCEIVER_CTRL);
355 }
356
357 return 3 << 16;
358 }
359
360
361 if (cpu_is_omap15xx()) {
362 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
363 return 0;
364 }
365
366 omap_cfg_reg(V6_USB0_TXD);
367 omap_cfg_reg(W9_USB0_TXEN);
368 omap_cfg_reg(W5_USB0_SE0);
369 if (nwires != 3)
370 omap_cfg_reg(Y5_USB0_RCV);
371
372
373
374
375
376
377 if (nwires != 6) {
378 u32 l;
379
380 l = omap_readl(USB_TRANSCEIVER_CTRL);
381 l &= ~CONF_USB2_UNI_R;
382 omap_writel(l, USB_TRANSCEIVER_CTRL);
383 }
384
385 switch (nwires) {
386 case 3:
387 syscon1 = 2;
388 break;
389 case 4:
390 syscon1 = 1;
391 break;
392 case 6:
393 syscon1 = 3;
394 {
395 u32 l;
396
397 omap_cfg_reg(AA9_USB0_VP);
398 omap_cfg_reg(R9_USB0_VM);
399 l = omap_readl(USB_TRANSCEIVER_CTRL);
400 l |= CONF_USB2_UNI_R;
401 omap_writel(l, USB_TRANSCEIVER_CTRL);
402 }
403 break;
404 default:
405 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
406 0, nwires);
407 }
408
409 return syscon1 << 16;
410}
411
412static u32 __init omap1_usb1_init(unsigned nwires)
413{
414 u32 syscon1 = 0;
415
416 if (!cpu_is_omap15xx() && nwires != 6) {
417 u32 l;
418
419 l = omap_readl(USB_TRANSCEIVER_CTRL);
420 l &= ~CONF_USB1_UNI_R;
421 omap_writel(l, USB_TRANSCEIVER_CTRL);
422 }
423 if (nwires == 0)
424 return 0;
425
426
427 omap_cfg_reg(USB1_TXD);
428 omap_cfg_reg(USB1_TXEN);
429 if (nwires != 3)
430 omap_cfg_reg(USB1_RCV);
431
432 if (cpu_is_omap15xx()) {
433 omap_cfg_reg(USB1_SEO);
434 omap_cfg_reg(USB1_SPEED);
435
436 } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
437 omap_cfg_reg(W13_1610_USB1_SE0);
438 omap_cfg_reg(R13_1610_USB1_SPEED);
439
440 } else if (cpu_is_omap1710()) {
441 omap_cfg_reg(R13_1710_USB1_SE0);
442
443 } else {
444 pr_debug("usb%d cpu unrecognized\n", 1);
445 return 0;
446 }
447
448 switch (nwires) {
449 case 2:
450 goto bad;
451 case 3:
452 syscon1 = 2;
453 break;
454 case 4:
455 syscon1 = 1;
456 break;
457 case 6:
458 syscon1 = 3;
459 omap_cfg_reg(USB1_VP);
460 omap_cfg_reg(USB1_VM);
461 if (!cpu_is_omap15xx()) {
462 u32 l;
463
464 l = omap_readl(USB_TRANSCEIVER_CTRL);
465 l |= CONF_USB1_UNI_R;
466 omap_writel(l, USB_TRANSCEIVER_CTRL);
467 }
468 break;
469 default:
470bad:
471 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
472 1, nwires);
473 }
474
475 return syscon1 << 20;
476}
477
478static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
479{
480 u32 syscon1 = 0;
481
482
483 if (alt_pingroup || nwires == 0)
484 return 0;
485
486 if (!cpu_is_omap15xx() && nwires != 6) {
487 u32 l;
488
489 l = omap_readl(USB_TRANSCEIVER_CTRL);
490 l &= ~CONF_USB2_UNI_R;
491 omap_writel(l, USB_TRANSCEIVER_CTRL);
492 }
493
494
495 if (cpu_is_omap15xx()) {
496 omap_cfg_reg(USB2_TXD);
497 omap_cfg_reg(USB2_TXEN);
498 omap_cfg_reg(USB2_SEO);
499 if (nwires != 3)
500 omap_cfg_reg(USB2_RCV);
501
502 } else if (cpu_is_omap16xx()) {
503 omap_cfg_reg(V6_USB2_TXD);
504 omap_cfg_reg(W9_USB2_TXEN);
505 omap_cfg_reg(W5_USB2_SE0);
506 if (nwires != 3)
507 omap_cfg_reg(Y5_USB2_RCV);
508
509 } else {
510 pr_debug("usb%d cpu unrecognized\n", 1);
511 return 0;
512 }
513
514
515
516 switch (nwires) {
517 case 2:
518 goto bad;
519 case 3:
520 syscon1 = 2;
521 break;
522 case 4:
523 syscon1 = 1;
524 break;
525 case 5:
526 goto bad;
527 case 6:
528 syscon1 = 3;
529 if (cpu_is_omap15xx()) {
530 omap_cfg_reg(USB2_VP);
531 omap_cfg_reg(USB2_VM);
532 } else {
533 u32 l;
534
535 omap_cfg_reg(AA9_USB2_VP);
536 omap_cfg_reg(R9_USB2_VM);
537 l = omap_readl(USB_TRANSCEIVER_CTRL);
538 l |= CONF_USB2_UNI_R;
539 omap_writel(l, USB_TRANSCEIVER_CTRL);
540 }
541 break;
542 default:
543bad:
544 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
545 2, nwires);
546 }
547
548 return syscon1 << 24;
549}
550
551#ifdef CONFIG_ARCH_OMAP15XX
552
553
554#define DPLL_IOB (1 << 13)
555#define DPLL_PLL_ENABLE (1 << 4)
556#define DPLL_LOCK (1 << 0)
557
558
559#define APLL_NDPLL_SWITCH (1 << 0)
560
561static void __init omap_1510_usb_init(struct omap_usb_config *config)
562{
563 unsigned int val;
564 u16 w;
565
566 config->usb0_init(config->pins[0], is_usb0_device(config));
567 config->usb1_init(config->pins[1]);
568 config->usb2_init(config->pins[2], 0);
569
570 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
571 val |= (config->hmc_mode << 1);
572 omap_writel(val, MOD_CONF_CTRL_0);
573
574 printk("USB: hmc %d", config->hmc_mode);
575 if (config->pins[0])
576 printk(", usb0 %d wires%s", config->pins[0],
577 is_usb0_device(config) ? " (dev)" : "");
578 if (config->pins[1])
579 printk(", usb1 %d wires", config->pins[1]);
580 if (config->pins[2])
581 printk(", usb2 %d wires", config->pins[2]);
582 printk("\n");
583
584
585 pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
586 omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
587
588 w = omap_readw(ULPD_APLL_CTRL);
589 w &= ~APLL_NDPLL_SWITCH;
590 omap_writew(w, ULPD_APLL_CTRL);
591
592 w = omap_readw(ULPD_DPLL_CTRL);
593 w |= DPLL_IOB | DPLL_PLL_ENABLE;
594 omap_writew(w, ULPD_DPLL_CTRL);
595
596 w = omap_readw(ULPD_SOFT_REQ);
597 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
598 omap_writew(w, ULPD_SOFT_REQ);
599
600 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
601 cpu_relax();
602
603#if IS_ENABLED(CONFIG_USB_OMAP)
604 if (config->register_dev) {
605 int status;
606
607 udc_device.dev.platform_data = config;
608 status = platform_device_register(&udc_device);
609 if (status)
610 pr_debug("can't register UDC device, %d\n", status);
611
612 }
613#endif
614
615#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
616 if (config->register_host) {
617 int status;
618
619 ohci_device.dev.platform_data = config;
620 status = platform_device_register(&ohci_device);
621 if (status)
622 pr_debug("can't register OHCI device, %d\n", status);
623
624 }
625#endif
626}
627
628#else
629static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
630#endif
631
632void __init omap1_usb_init(struct omap_usb_config *_pdata)
633{
634 struct omap_usb_config *pdata;
635
636 pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
637 if (!pdata)
638 return;
639
640 pdata->usb0_init = omap1_usb0_init;
641 pdata->usb1_init = omap1_usb1_init;
642 pdata->usb2_init = omap1_usb2_init;
643 udc_device_init(pdata);
644 ohci_device_init(pdata);
645 otg_device_init(pdata);
646
647 if (cpu_is_omap7xx() || cpu_is_omap16xx())
648 omap_otg_init(pdata);
649 else if (cpu_is_omap15xx())
650 omap_1510_usb_init(pdata);
651 else
652 printk(KERN_ERR "USB: No init for your chip yet\n");
653}
654
