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8#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <linux/platform_device.h>
12#include <linux/dma-map-ops.h>
13#include <linux/io.h>
14#include <linux/delay.h>
15
16#include <asm/irq.h>
17
18#include <mach/mux.h>
19
20#include <mach/usb.h>
21
22#include "common.h"
23
24
25
26
27
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32
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40
41
42#define INT_USB_IRQ_GEN IH2_BASE + 20
43#define INT_USB_IRQ_NISO IH2_BASE + 30
44#define INT_USB_IRQ_ISO IH2_BASE + 29
45#define INT_USB_IRQ_HGEN INT_USB_HHC_1
46#define INT_USB_IRQ_OTG IH2_BASE + 8
47
48#ifdef CONFIG_ARCH_OMAP_OTG
49
50static void __init
51omap_otg_init(struct omap_usb_config *config)
52{
53 u32 syscon;
54 int alt_pingroup = 0;
55 u16 w;
56
57
58
59 syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
60 if (!(syscon & OTG_RESET_DONE))
61 pr_debug("USB resets not complete?\n");
62
63
64
65
66 if (config->pins[0] > 2)
67 alt_pingroup = 1;
68 syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
69 syscon |= config->usb1_init(config->pins[1]);
70 syscon |= config->usb2_init(config->pins[2], alt_pingroup);
71 pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
72 omap_writel(syscon, OTG_SYSCON_1);
73
74 syscon = config->hmc_mode;
75 syscon |= USBX_SYNCHRO | (4 << 16) ;
76#ifdef CONFIG_USB_OTG
77 if (config->otg)
78 syscon |= OTG_EN;
79#endif
80 pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
81 omap_readl(USB_TRANSCEIVER_CTRL));
82 pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
83 omap_writel(syscon, OTG_SYSCON_2);
84
85 printk("USB: hmc %d", config->hmc_mode);
86 if (!alt_pingroup)
87 pr_cont(", usb2 alt %d wires", config->pins[2]);
88 else if (config->pins[0])
89 pr_cont(", usb0 %d wires%s", config->pins[0],
90 is_usb0_device(config) ? " (dev)" : "");
91 if (config->pins[1])
92 pr_cont(", usb1 %d wires", config->pins[1]);
93 if (!alt_pingroup && config->pins[2])
94 pr_cont(", usb2 %d wires", config->pins[2]);
95 if (config->otg)
96 pr_cont(", Mini-AB on usb%d", config->otg - 1);
97 pr_cont("\n");
98
99
100 w = omap_readw(ULPD_SOFT_REQ);
101 w &= ~SOFT_USB_CLK_REQ;
102 omap_writew(w, ULPD_SOFT_REQ);
103
104 w = omap_readw(ULPD_CLOCK_CTRL);
105 w &= ~USB_MCLK_EN;
106 w |= DIS_USB_PVCI_CLK;
107 omap_writew(w, ULPD_CLOCK_CTRL);
108
109 syscon = omap_readl(OTG_SYSCON_1);
110 syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
111
112#if IS_ENABLED(CONFIG_USB_OMAP)
113 if (config->otg || config->register_dev) {
114 struct platform_device *udc_device = config->udc_device;
115 int status;
116
117 syscon &= ~DEV_IDLE_EN;
118 udc_device->dev.platform_data = config;
119 status = platform_device_register(udc_device);
120 if (status)
121 pr_debug("can't register UDC device, %d\n", status);
122 }
123#endif
124
125#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
126 if (config->otg || config->register_host) {
127 struct platform_device *ohci_device = config->ohci_device;
128 int status;
129
130 syscon &= ~HST_IDLE_EN;
131 ohci_device->dev.platform_data = config;
132 status = platform_device_register(ohci_device);
133 if (status)
134 pr_debug("can't register OHCI device, %d\n", status);
135 }
136#endif
137
138#ifdef CONFIG_USB_OTG
139 if (config->otg) {
140 struct platform_device *otg_device = config->otg_device;
141 int status;
142
143 syscon &= ~OTG_IDLE_EN;
144 otg_device->dev.platform_data = config;
145 status = platform_device_register(otg_device);
146 if (status)
147 pr_debug("can't register OTG device, %d\n", status);
148 }
149#endif
150 pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
151 omap_writel(syscon, OTG_SYSCON_1);
152}
153
154#else
155static void omap_otg_init(struct omap_usb_config *config) {}
156#endif
157
158#if IS_ENABLED(CONFIG_USB_OMAP)
159
160static struct resource udc_resources[] = {
161
162 {
163 .start = UDC_BASE,
164 .end = UDC_BASE + 0xff,
165 .flags = IORESOURCE_MEM,
166 }, {
167 .start = INT_USB_IRQ_GEN,
168 .flags = IORESOURCE_IRQ,
169 }, {
170 .start = INT_USB_IRQ_NISO,
171 .flags = IORESOURCE_IRQ,
172 }, {
173 .start = INT_USB_IRQ_ISO,
174 .flags = IORESOURCE_IRQ,
175 },
176};
177
178static u64 udc_dmamask = ~(u32)0;
179
180static struct platform_device udc_device = {
181 .name = "omap_udc",
182 .id = -1,
183 .dev = {
184 .dma_mask = &udc_dmamask,
185 .coherent_dma_mask = 0xffffffff,
186 },
187 .num_resources = ARRAY_SIZE(udc_resources),
188 .resource = udc_resources,
189};
190
191static inline void udc_device_init(struct omap_usb_config *pdata)
192{
193
194 if(cpu_is_omap7xx()) {
195 udc_resources[1].start = INT_7XX_USB_GENI;
196 udc_resources[2].start = INT_7XX_USB_NON_ISO;
197 udc_resources[3].start = INT_7XX_USB_ISO;
198 }
199 pdata->udc_device = &udc_device;
200}
201
202#else
203
204static inline void udc_device_init(struct omap_usb_config *pdata)
205{
206}
207
208#endif
209
210
211static u64 ohci_dmamask = ~(u32)0;
212
213static struct resource ohci_resources[] = {
214 {
215 .start = OMAP_OHCI_BASE,
216 .end = OMAP_OHCI_BASE + 0xff,
217 .flags = IORESOURCE_MEM,
218 },
219 {
220 .start = INT_USB_IRQ_HGEN,
221 .flags = IORESOURCE_IRQ,
222 },
223};
224
225static struct platform_device ohci_device = {
226 .name = "ohci",
227 .id = -1,
228 .dev = {
229 .dma_mask = &ohci_dmamask,
230 .coherent_dma_mask = 0xffffffff,
231 },
232 .num_resources = ARRAY_SIZE(ohci_resources),
233 .resource = ohci_resources,
234};
235
236static inline void ohci_device_init(struct omap_usb_config *pdata)
237{
238 if (!IS_ENABLED(CONFIG_USB_OHCI_HCD))
239 return;
240
241 if (cpu_is_omap7xx())
242 ohci_resources[1].start = INT_7XX_USB_HHC_1;
243 pdata->ohci_device = &ohci_device;
244 pdata->ocpi_enable = &ocpi_enable;
245}
246
247#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
248
249static struct resource otg_resources[] = {
250
251 {
252 .start = OTG_BASE,
253 .end = OTG_BASE + 0xff,
254 .flags = IORESOURCE_MEM,
255 }, {
256 .start = INT_USB_IRQ_OTG,
257 .flags = IORESOURCE_IRQ,
258 },
259};
260
261static struct platform_device otg_device = {
262 .name = "omap_otg",
263 .id = -1,
264 .num_resources = ARRAY_SIZE(otg_resources),
265 .resource = otg_resources,
266};
267
268static inline void otg_device_init(struct omap_usb_config *pdata)
269{
270 if (cpu_is_omap7xx())
271 otg_resources[1].start = INT_7XX_USB_OTG;
272 pdata->otg_device = &otg_device;
273}
274
275#else
276
277static inline void otg_device_init(struct omap_usb_config *pdata)
278{
279}
280
281#endif
282
283static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
284{
285 u32 syscon1 = 0;
286
287 if (nwires == 0) {
288 if (!cpu_is_omap15xx()) {
289 u32 l;
290
291
292 l = omap_readl(USB_TRANSCEIVER_CTRL);
293 l &= ~(3 << 1);
294 omap_writel(l, USB_TRANSCEIVER_CTRL);
295 }
296 return 0;
297 }
298
299 if (is_device) {
300 if (cpu_is_omap7xx()) {
301 omap_cfg_reg(AA17_7XX_USB_DM);
302 omap_cfg_reg(W16_7XX_USB_PU_EN);
303 omap_cfg_reg(W17_7XX_USB_VBUSI);
304 omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
305 omap_cfg_reg(W19_7XX_USB_DCRST);
306 } else
307 omap_cfg_reg(W4_USB_PUEN);
308 }
309
310 if (nwires == 2) {
311 u32 l;
312
313
314
315
316 if (cpu_is_omap15xx()) {
317
318 return 0;
319 }
320
321
322
323
324
325
326
327
328 if (!cpu_is_omap7xx()) {
329 l = omap_readl(USB_TRANSCEIVER_CTRL);
330 l &= ~(7 << 4);
331 if (!is_device)
332 l |= (3 << 1);
333 omap_writel(l, USB_TRANSCEIVER_CTRL);
334 }
335
336 return 3 << 16;
337 }
338
339
340 if (cpu_is_omap15xx()) {
341 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
342 return 0;
343 }
344
345 omap_cfg_reg(V6_USB0_TXD);
346 omap_cfg_reg(W9_USB0_TXEN);
347 omap_cfg_reg(W5_USB0_SE0);
348 if (nwires != 3)
349 omap_cfg_reg(Y5_USB0_RCV);
350
351
352
353
354
355
356 if (nwires != 6) {
357 u32 l;
358
359 l = omap_readl(USB_TRANSCEIVER_CTRL);
360 l &= ~CONF_USB2_UNI_R;
361 omap_writel(l, USB_TRANSCEIVER_CTRL);
362 }
363
364 switch (nwires) {
365 case 3:
366 syscon1 = 2;
367 break;
368 case 4:
369 syscon1 = 1;
370 break;
371 case 6:
372 syscon1 = 3;
373 {
374 u32 l;
375
376 omap_cfg_reg(AA9_USB0_VP);
377 omap_cfg_reg(R9_USB0_VM);
378 l = omap_readl(USB_TRANSCEIVER_CTRL);
379 l |= CONF_USB2_UNI_R;
380 omap_writel(l, USB_TRANSCEIVER_CTRL);
381 }
382 break;
383 default:
384 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
385 0, nwires);
386 }
387
388 return syscon1 << 16;
389}
390
391static u32 __init omap1_usb1_init(unsigned nwires)
392{
393 u32 syscon1 = 0;
394
395 if (!cpu_is_omap15xx() && nwires != 6) {
396 u32 l;
397
398 l = omap_readl(USB_TRANSCEIVER_CTRL);
399 l &= ~CONF_USB1_UNI_R;
400 omap_writel(l, USB_TRANSCEIVER_CTRL);
401 }
402 if (nwires == 0)
403 return 0;
404
405
406 omap_cfg_reg(USB1_TXD);
407 omap_cfg_reg(USB1_TXEN);
408 if (nwires != 3)
409 omap_cfg_reg(USB1_RCV);
410
411 if (cpu_is_omap15xx()) {
412 omap_cfg_reg(USB1_SEO);
413 omap_cfg_reg(USB1_SPEED);
414
415 } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
416 omap_cfg_reg(W13_1610_USB1_SE0);
417 omap_cfg_reg(R13_1610_USB1_SPEED);
418
419 } else if (cpu_is_omap1710()) {
420 omap_cfg_reg(R13_1710_USB1_SE0);
421
422 } else {
423 pr_debug("usb%d cpu unrecognized\n", 1);
424 return 0;
425 }
426
427 switch (nwires) {
428 case 2:
429 goto bad;
430 case 3:
431 syscon1 = 2;
432 break;
433 case 4:
434 syscon1 = 1;
435 break;
436 case 6:
437 syscon1 = 3;
438 omap_cfg_reg(USB1_VP);
439 omap_cfg_reg(USB1_VM);
440 if (!cpu_is_omap15xx()) {
441 u32 l;
442
443 l = omap_readl(USB_TRANSCEIVER_CTRL);
444 l |= CONF_USB1_UNI_R;
445 omap_writel(l, USB_TRANSCEIVER_CTRL);
446 }
447 break;
448 default:
449bad:
450 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
451 1, nwires);
452 }
453
454 return syscon1 << 20;
455}
456
457static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
458{
459 u32 syscon1 = 0;
460
461
462 if (alt_pingroup || nwires == 0)
463 return 0;
464
465 if (!cpu_is_omap15xx() && nwires != 6) {
466 u32 l;
467
468 l = omap_readl(USB_TRANSCEIVER_CTRL);
469 l &= ~CONF_USB2_UNI_R;
470 omap_writel(l, USB_TRANSCEIVER_CTRL);
471 }
472
473
474 if (cpu_is_omap15xx()) {
475 omap_cfg_reg(USB2_TXD);
476 omap_cfg_reg(USB2_TXEN);
477 omap_cfg_reg(USB2_SEO);
478 if (nwires != 3)
479 omap_cfg_reg(USB2_RCV);
480
481 } else if (cpu_is_omap16xx()) {
482 omap_cfg_reg(V6_USB2_TXD);
483 omap_cfg_reg(W9_USB2_TXEN);
484 omap_cfg_reg(W5_USB2_SE0);
485 if (nwires != 3)
486 omap_cfg_reg(Y5_USB2_RCV);
487
488 } else {
489 pr_debug("usb%d cpu unrecognized\n", 1);
490 return 0;
491 }
492
493
494
495 switch (nwires) {
496 case 2:
497 goto bad;
498 case 3:
499 syscon1 = 2;
500 break;
501 case 4:
502 syscon1 = 1;
503 break;
504 case 5:
505 goto bad;
506 case 6:
507 syscon1 = 3;
508 if (cpu_is_omap15xx()) {
509 omap_cfg_reg(USB2_VP);
510 omap_cfg_reg(USB2_VM);
511 } else {
512 u32 l;
513
514 omap_cfg_reg(AA9_USB2_VP);
515 omap_cfg_reg(R9_USB2_VM);
516 l = omap_readl(USB_TRANSCEIVER_CTRL);
517 l |= CONF_USB2_UNI_R;
518 omap_writel(l, USB_TRANSCEIVER_CTRL);
519 }
520 break;
521 default:
522bad:
523 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
524 2, nwires);
525 }
526
527 return syscon1 << 24;
528}
529
530#ifdef CONFIG_ARCH_OMAP15XX
531
532#define OMAP1510_LB_MEMSIZE 32
533#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
534#define OMAP1510_LB_MMU_CTL 0xfffec208
535#define OMAP1510_LB_MMU_LCK 0xfffec224
536#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
537#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
538#define OMAP1510_LB_MMU_CAM_L 0xfffec230
539#define OMAP1510_LB_MMU_RAM_H 0xfffec234
540#define OMAP1510_LB_MMU_RAM_L 0xfffec238
541
542
543
544
545
546
547#define OMAP1510_LB_OFFSET UL(0x30000000)
548
549
550
551
552static int omap_1510_local_bus_power(int on)
553{
554 if (on) {
555 omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
556 udelay(200);
557 } else {
558 omap_writel(0, OMAP1510_LB_MMU_CTL);
559 }
560
561 return 0;
562}
563
564
565
566
567
568
569
570
571static int omap_1510_local_bus_init(void)
572{
573 unsigned int tlb;
574 unsigned long lbaddr, physaddr;
575
576 omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
577 OMAP1510_LB_CLOCK_DIV);
578
579
580 for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
581 lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
582 physaddr = tlb * 0x00100000 + PHYS_OFFSET;
583 omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
584 omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
585 OMAP1510_LB_MMU_CAM_L);
586 omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
587 omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
588 omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
589 omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
590 }
591
592
593 omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
594 udelay(200);
595
596 return 0;
597}
598
599static void omap_1510_local_bus_reset(void)
600{
601 omap_1510_local_bus_power(1);
602 omap_1510_local_bus_init();
603}
604
605
606#define DPLL_IOB (1 << 13)
607#define DPLL_PLL_ENABLE (1 << 4)
608#define DPLL_LOCK (1 << 0)
609
610
611#define APLL_NDPLL_SWITCH (1 << 0)
612
613static void __init omap_1510_usb_init(struct omap_usb_config *config)
614{
615 unsigned int val;
616 u16 w;
617
618 config->usb0_init(config->pins[0], is_usb0_device(config));
619 config->usb1_init(config->pins[1]);
620 config->usb2_init(config->pins[2], 0);
621
622 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
623 val |= (config->hmc_mode << 1);
624 omap_writel(val, MOD_CONF_CTRL_0);
625
626 printk("USB: hmc %d", config->hmc_mode);
627 if (config->pins[0])
628 pr_cont(", usb0 %d wires%s", config->pins[0],
629 is_usb0_device(config) ? " (dev)" : "");
630 if (config->pins[1])
631 pr_cont(", usb1 %d wires", config->pins[1]);
632 if (config->pins[2])
633 pr_cont(", usb2 %d wires", config->pins[2]);
634 pr_cont("\n");
635
636
637 pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
638 omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
639
640 w = omap_readw(ULPD_APLL_CTRL);
641 w &= ~APLL_NDPLL_SWITCH;
642 omap_writew(w, ULPD_APLL_CTRL);
643
644 w = omap_readw(ULPD_DPLL_CTRL);
645 w |= DPLL_IOB | DPLL_PLL_ENABLE;
646 omap_writew(w, ULPD_DPLL_CTRL);
647
648 w = omap_readw(ULPD_SOFT_REQ);
649 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
650 omap_writew(w, ULPD_SOFT_REQ);
651
652 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
653 cpu_relax();
654
655#if IS_ENABLED(CONFIG_USB_OMAP)
656 if (config->register_dev) {
657 int status;
658
659 udc_device.dev.platform_data = config;
660 status = platform_device_register(&udc_device);
661 if (status)
662 pr_debug("can't register UDC device, %d\n", status);
663
664 }
665#endif
666
667 if (IS_ENABLED(CONFIG_USB_OHCI_HCD) && config->register_host) {
668 int status;
669
670 ohci_device.dev.platform_data = config;
671 dma_direct_set_offset(&ohci_device.dev, PHYS_OFFSET,
672 OMAP1510_LB_OFFSET, (u64)-1);
673 status = platform_device_register(&ohci_device);
674 if (status)
675 pr_debug("can't register OHCI device, %d\n", status);
676
677
678 config->lb_reset = omap_1510_local_bus_reset;
679 }
680}
681
682#else
683static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
684#endif
685
686void __init omap1_usb_init(struct omap_usb_config *_pdata)
687{
688 struct omap_usb_config *pdata;
689
690 pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
691 if (!pdata)
692 return;
693
694 pdata->usb0_init = omap1_usb0_init;
695 pdata->usb1_init = omap1_usb1_init;
696 pdata->usb2_init = omap1_usb2_init;
697 udc_device_init(pdata);
698 ohci_device_init(pdata);
699 otg_device_init(pdata);
700
701 if (cpu_is_omap7xx() || cpu_is_omap16xx())
702 omap_otg_init(pdata);
703 else if (cpu_is_omap15xx())
704 omap_1510_usb_init(pdata);
705 else
706 printk(KERN_ERR "USB: No init for your chip yet\n");
707}
708
