xref: /linux/arch/arm/mach-omap1/usb.c (revision 9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Platform level USB initialization for FS USB OTG controller on omap1
4  *
5  * Copyright (C) 2004 Texas Instruments, Inc.
6  */
7 
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 #include <linux/soc/ti/omap1-io.h>
16 
17 #include <asm/irq.h>
18 
19 #include "hardware.h"
20 #include "mux.h"
21 #include "usb.h"
22 #include "common.h"
23 
24 /* These routines should handle the standard chip-specific modes
25  * for usb0/1/2 ports, covering basic mux and transceiver setup.
26  *
27  * Some board-*.c files will need to set up additional mux options,
28  * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
29  */
30 
31 /* TESTED ON:
32  *  - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
33  *  - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
34  *  - 5912 OSK UDC, with *nonstandard* A-to-A cable
35  *  - 1510 Innovator UDC with bundled usb0 cable
36  *  - 1510 Innovator OHCI with bundled usb1/usb2 cable
37  *  - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
38  *  - 1710 custom development board using alternate pin group
39  *  - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
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 
50 static void __init
omap_otg_init(struct omap_usb_config * config)51 omap_otg_init(struct omap_usb_config *config)
52 {
53 	u32		syscon;
54 	int		alt_pingroup = 0;
55 	u16		w;
56 
57 	/* NOTE:  no bus or clock setup (yet?) */
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 	//omap_writew(0, OTG_IRQ_EN);
64 
65 	/* pin muxing and transceiver pinouts */
66 	if (config->pins[0] > 2)	/* alt pingroup 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) /* B_ASE0_BRST */;
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 	/* leave USB clocks/controllers off until needed */
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
omap_otg_init(struct omap_usb_config * config)155 static void omap_otg_init(struct omap_usb_config *config) {}
156 #endif
157 
158 #if IS_ENABLED(CONFIG_USB_OMAP)
159 
160 static struct resource udc_resources[] = {
161 	/* order is significant! */
162 	{		/* registers */
163 		.start		= UDC_BASE,
164 		.end		= UDC_BASE + 0xff,
165 		.flags		= IORESOURCE_MEM,
166 	}, {		/* general IRQ */
167 		.start		= INT_USB_IRQ_GEN,
168 		.flags		= IORESOURCE_IRQ,
169 	}, {		/* PIO IRQ */
170 		.start		= INT_USB_IRQ_NISO,
171 		.flags		= IORESOURCE_IRQ,
172 	}, {		/* SOF IRQ */
173 		.start		= INT_USB_IRQ_ISO,
174 		.flags		= IORESOURCE_IRQ,
175 	},
176 };
177 
178 static u64 udc_dmamask = ~(u32)0;
179 
180 static 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 
udc_device_init(struct omap_usb_config * pdata)191 static inline void udc_device_init(struct omap_usb_config *pdata)
192 {
193 	pdata->udc_device = &udc_device;
194 }
195 
196 #else
197 
udc_device_init(struct omap_usb_config * pdata)198 static inline void udc_device_init(struct omap_usb_config *pdata)
199 {
200 }
201 
202 #endif
203 
204 /* The dmamask must be set for OHCI to work */
205 static u64 ohci_dmamask = ~(u32)0;
206 
207 static struct resource ohci_resources[] = {
208 	{
209 		.start	= OMAP_OHCI_BASE,
210 		.end	= OMAP_OHCI_BASE + 0xff,
211 		.flags	= IORESOURCE_MEM,
212 	},
213 	{
214 		.start	= INT_USB_IRQ_HGEN,
215 		.flags	= IORESOURCE_IRQ,
216 	},
217 };
218 
219 static struct platform_device ohci_device = {
220 	.name			= "ohci",
221 	.id			= -1,
222 	.dev = {
223 		.dma_mask		= &ohci_dmamask,
224 		.coherent_dma_mask	= 0xffffffff,
225 	},
226 	.num_resources	= ARRAY_SIZE(ohci_resources),
227 	.resource		= ohci_resources,
228 };
229 
ohci_device_init(struct omap_usb_config * pdata)230 static inline void ohci_device_init(struct omap_usb_config *pdata)
231 {
232 	if (!IS_ENABLED(CONFIG_USB_OHCI_HCD))
233 		return;
234 
235 	pdata->ohci_device = &ohci_device;
236 	pdata->ocpi_enable = &ocpi_enable;
237 }
238 
239 #if	defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
240 
241 static struct resource otg_resources[] = {
242 	/* order is significant! */
243 	{
244 		.start		= OTG_BASE,
245 		.end		= OTG_BASE + 0xff,
246 		.flags		= IORESOURCE_MEM,
247 	}, {
248 		.start		= INT_USB_IRQ_OTG,
249 		.flags		= IORESOURCE_IRQ,
250 	},
251 };
252 
253 static struct platform_device otg_device = {
254 	.name		= "omap_otg",
255 	.id		= -1,
256 	.num_resources	= ARRAY_SIZE(otg_resources),
257 	.resource	= otg_resources,
258 };
259 
otg_device_init(struct omap_usb_config * pdata)260 static inline void otg_device_init(struct omap_usb_config *pdata)
261 {
262 	pdata->otg_device = &otg_device;
263 }
264 
265 #else
266 
otg_device_init(struct omap_usb_config * pdata)267 static inline void otg_device_init(struct omap_usb_config *pdata)
268 {
269 }
270 
271 #endif
272 
omap1_usb0_init(unsigned nwires,unsigned is_device)273 static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
274 {
275 	u32	syscon1 = 0;
276 
277 	if (nwires == 0) {
278 		if (!cpu_is_omap15xx()) {
279 			u32 l;
280 
281 			/* pulldown D+/D- */
282 			l = omap_readl(USB_TRANSCEIVER_CTRL);
283 			l &= ~(3 << 1);
284 			omap_writel(l, USB_TRANSCEIVER_CTRL);
285 		}
286 		return 0;
287 	}
288 
289 	if (is_device) {
290 		omap_cfg_reg(W4_USB_PUEN);
291 	}
292 
293 	if (nwires == 2) {
294 		u32 l;
295 
296 		// omap_cfg_reg(P9_USB_DP);
297 		// omap_cfg_reg(R8_USB_DM);
298 
299 		if (cpu_is_omap15xx()) {
300 			/* This works on 1510-Innovator */
301 			return 0;
302 		}
303 
304 		/* NOTES:
305 		 *  - peripheral should configure VBUS detection!
306 		 *  - only peripherals may use the internal D+/D- pulldowns
307 		 *  - OTG support on this port not yet written
308 		 */
309 
310 		l = omap_readl(USB_TRANSCEIVER_CTRL);
311 		l &= ~(7 << 4);
312 		if (!is_device)
313 			l |= (3 << 1);
314 		omap_writel(l, USB_TRANSCEIVER_CTRL);
315 
316 		return 3 << 16;
317 	}
318 
319 	/* alternate pin config, external transceiver */
320 	if (cpu_is_omap15xx()) {
321 		printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
322 		return 0;
323 	}
324 
325 	omap_cfg_reg(V6_USB0_TXD);
326 	omap_cfg_reg(W9_USB0_TXEN);
327 	omap_cfg_reg(W5_USB0_SE0);
328 	if (nwires != 3)
329 		omap_cfg_reg(Y5_USB0_RCV);
330 
331 	/* NOTE:  SPEED and SUSP aren't configured here.  OTG hosts
332 	 * may be able to use I2C requests to set those bits along
333 	 * with VBUS switching and overcurrent detection.
334 	 */
335 
336 	if (nwires != 6) {
337 		u32 l;
338 
339 		l = omap_readl(USB_TRANSCEIVER_CTRL);
340 		l &= ~CONF_USB2_UNI_R;
341 		omap_writel(l, USB_TRANSCEIVER_CTRL);
342 	}
343 
344 	switch (nwires) {
345 	case 3:
346 		syscon1 = 2;
347 		break;
348 	case 4:
349 		syscon1 = 1;
350 		break;
351 	case 6:
352 		syscon1 = 3;
353 		{
354 			u32 l;
355 
356 			omap_cfg_reg(AA9_USB0_VP);
357 			omap_cfg_reg(R9_USB0_VM);
358 			l = omap_readl(USB_TRANSCEIVER_CTRL);
359 			l |= CONF_USB2_UNI_R;
360 			omap_writel(l, USB_TRANSCEIVER_CTRL);
361 		}
362 		break;
363 	default:
364 		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
365 			0, nwires);
366 	}
367 
368 	return syscon1 << 16;
369 }
370 
omap1_usb1_init(unsigned nwires)371 static u32 __init omap1_usb1_init(unsigned nwires)
372 {
373 	u32	syscon1 = 0;
374 
375 	if (!cpu_is_omap15xx() && nwires != 6) {
376 		u32 l;
377 
378 		l = omap_readl(USB_TRANSCEIVER_CTRL);
379 		l &= ~CONF_USB1_UNI_R;
380 		omap_writel(l, USB_TRANSCEIVER_CTRL);
381 	}
382 	if (nwires == 0)
383 		return 0;
384 
385 	/* external transceiver */
386 	omap_cfg_reg(USB1_TXD);
387 	omap_cfg_reg(USB1_TXEN);
388 	if (nwires != 3)
389 		omap_cfg_reg(USB1_RCV);
390 
391 	if (cpu_is_omap15xx()) {
392 		omap_cfg_reg(USB1_SEO);
393 		omap_cfg_reg(USB1_SPEED);
394 		// SUSP
395 	} else if (cpu_is_omap1610() || cpu_is_omap5912()) {
396 		omap_cfg_reg(W13_1610_USB1_SE0);
397 		omap_cfg_reg(R13_1610_USB1_SPEED);
398 		// SUSP
399 	} else if (cpu_is_omap1710()) {
400 		omap_cfg_reg(R13_1710_USB1_SE0);
401 		// SUSP
402 	} else {
403 		pr_debug("usb%d cpu unrecognized\n", 1);
404 		return 0;
405 	}
406 
407 	switch (nwires) {
408 	case 2:
409 		goto bad;
410 	case 3:
411 		syscon1 = 2;
412 		break;
413 	case 4:
414 		syscon1 = 1;
415 		break;
416 	case 6:
417 		syscon1 = 3;
418 		omap_cfg_reg(USB1_VP);
419 		omap_cfg_reg(USB1_VM);
420 		if (!cpu_is_omap15xx()) {
421 			u32 l;
422 
423 			l = omap_readl(USB_TRANSCEIVER_CTRL);
424 			l |= CONF_USB1_UNI_R;
425 			omap_writel(l, USB_TRANSCEIVER_CTRL);
426 		}
427 		break;
428 	default:
429 bad:
430 		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
431 			1, nwires);
432 	}
433 
434 	return syscon1 << 20;
435 }
436 
omap1_usb2_init(unsigned nwires,unsigned alt_pingroup)437 static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
438 {
439 	u32	syscon1 = 0;
440 
441 	/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
442 	if (alt_pingroup || nwires == 0)
443 		return 0;
444 
445 	if (!cpu_is_omap15xx() && nwires != 6) {
446 		u32 l;
447 
448 		l = omap_readl(USB_TRANSCEIVER_CTRL);
449 		l &= ~CONF_USB2_UNI_R;
450 		omap_writel(l, USB_TRANSCEIVER_CTRL);
451 	}
452 
453 	/* external transceiver */
454 	if (cpu_is_omap15xx()) {
455 		omap_cfg_reg(USB2_TXD);
456 		omap_cfg_reg(USB2_TXEN);
457 		omap_cfg_reg(USB2_SEO);
458 		if (nwires != 3)
459 			omap_cfg_reg(USB2_RCV);
460 		/* there is no USB2_SPEED */
461 	} else if (cpu_is_omap16xx()) {
462 		omap_cfg_reg(V6_USB2_TXD);
463 		omap_cfg_reg(W9_USB2_TXEN);
464 		omap_cfg_reg(W5_USB2_SE0);
465 		if (nwires != 3)
466 			omap_cfg_reg(Y5_USB2_RCV);
467 		// FIXME omap_cfg_reg(USB2_SPEED);
468 	} else {
469 		pr_debug("usb%d cpu unrecognized\n", 1);
470 		return 0;
471 	}
472 
473 	// omap_cfg_reg(USB2_SUSP);
474 
475 	switch (nwires) {
476 	case 2:
477 		goto bad;
478 	case 3:
479 		syscon1 = 2;
480 		break;
481 	case 4:
482 		syscon1 = 1;
483 		break;
484 	case 5:
485 		goto bad;
486 	case 6:
487 		syscon1 = 3;
488 		if (cpu_is_omap15xx()) {
489 			omap_cfg_reg(USB2_VP);
490 			omap_cfg_reg(USB2_VM);
491 		} else {
492 			u32 l;
493 
494 			omap_cfg_reg(AA9_USB2_VP);
495 			omap_cfg_reg(R9_USB2_VM);
496 			l = omap_readl(USB_TRANSCEIVER_CTRL);
497 			l |= CONF_USB2_UNI_R;
498 			omap_writel(l, USB_TRANSCEIVER_CTRL);
499 		}
500 		break;
501 	default:
502 bad:
503 		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
504 			2, nwires);
505 	}
506 
507 	return syscon1 << 24;
508 }
509 
510 #ifdef	CONFIG_ARCH_OMAP15XX
511 /* OMAP-1510 OHCI has its own MMU for DMA */
512 #define OMAP1510_LB_MEMSIZE	32	/* Should be same as SDRAM size */
513 #define OMAP1510_LB_CLOCK_DIV	0xfffec10c
514 #define OMAP1510_LB_MMU_CTL	0xfffec208
515 #define OMAP1510_LB_MMU_LCK	0xfffec224
516 #define OMAP1510_LB_MMU_LD_TLB	0xfffec228
517 #define OMAP1510_LB_MMU_CAM_H	0xfffec22c
518 #define OMAP1510_LB_MMU_CAM_L	0xfffec230
519 #define OMAP1510_LB_MMU_RAM_H	0xfffec234
520 #define OMAP1510_LB_MMU_RAM_L	0xfffec238
521 
522 /*
523  * Bus address is physical address, except for OMAP-1510 Local Bus.
524  * OMAP-1510 bus address is translated into a Local Bus address if the
525  * OMAP bus type is lbus.
526  */
527 #define OMAP1510_LB_OFFSET	   UL(0x30000000)
528 
529 /*
530  * OMAP-1510 specific Local Bus clock on/off
531  */
omap_1510_local_bus_power(int on)532 static int omap_1510_local_bus_power(int on)
533 {
534 	if (on) {
535 		omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
536 		udelay(200);
537 	} else {
538 		omap_writel(0, OMAP1510_LB_MMU_CTL);
539 	}
540 
541 	return 0;
542 }
543 
544 /*
545  * OMAP-1510 specific Local Bus initialization
546  * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
547  *       See also arch/mach-omap/memory.h for __virt_to_dma() and
548  *       __dma_to_virt() which need to match with the physical
549  *       Local Bus address below.
550  */
omap_1510_local_bus_init(void)551 static int omap_1510_local_bus_init(void)
552 {
553 	unsigned int tlb;
554 	unsigned long lbaddr, physaddr;
555 
556 	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
557 	       OMAP1510_LB_CLOCK_DIV);
558 
559 	/* Configure the Local Bus MMU table */
560 	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
561 		lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
562 		physaddr = tlb * 0x00100000 + PHYS_OFFSET;
563 		omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
564 		omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
565 		       OMAP1510_LB_MMU_CAM_L);
566 		omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
567 		omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
568 		omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
569 		omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
570 	}
571 
572 	/* Enable the walking table */
573 	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
574 	udelay(200);
575 
576 	return 0;
577 }
578 
omap_1510_local_bus_reset(void)579 static void omap_1510_local_bus_reset(void)
580 {
581 	omap_1510_local_bus_power(1);
582 	omap_1510_local_bus_init();
583 }
584 
585 /* ULPD_DPLL_CTRL */
586 #define DPLL_IOB		(1 << 13)
587 #define DPLL_PLL_ENABLE		(1 << 4)
588 #define DPLL_LOCK		(1 << 0)
589 
590 /* ULPD_APLL_CTRL */
591 #define APLL_NDPLL_SWITCH	(1 << 0)
592 
omap_1510_usb_init(struct omap_usb_config * config)593 static void __init omap_1510_usb_init(struct omap_usb_config *config)
594 {
595 	unsigned int val;
596 	u16 w;
597 
598 	config->usb0_init(config->pins[0], is_usb0_device(config));
599 	config->usb1_init(config->pins[1]);
600 	config->usb2_init(config->pins[2], 0);
601 
602 	val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
603 	val |= (config->hmc_mode << 1);
604 	omap_writel(val, MOD_CONF_CTRL_0);
605 
606 	printk("USB: hmc %d", config->hmc_mode);
607 	if (config->pins[0])
608 		pr_cont(", usb0 %d wires%s", config->pins[0],
609 			is_usb0_device(config) ? " (dev)" : "");
610 	if (config->pins[1])
611 		pr_cont(", usb1 %d wires", config->pins[1]);
612 	if (config->pins[2])
613 		pr_cont(", usb2 %d wires", config->pins[2]);
614 	pr_cont("\n");
615 
616 	/* use DPLL for 48 MHz function clock */
617 	pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
618 			omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
619 
620 	w = omap_readw(ULPD_APLL_CTRL);
621 	w &= ~APLL_NDPLL_SWITCH;
622 	omap_writew(w, ULPD_APLL_CTRL);
623 
624 	w = omap_readw(ULPD_DPLL_CTRL);
625 	w |= DPLL_IOB | DPLL_PLL_ENABLE;
626 	omap_writew(w, ULPD_DPLL_CTRL);
627 
628 	w = omap_readw(ULPD_SOFT_REQ);
629 	w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
630 	omap_writew(w, ULPD_SOFT_REQ);
631 
632 	while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
633 		cpu_relax();
634 
635 #if IS_ENABLED(CONFIG_USB_OMAP)
636 	if (config->register_dev) {
637 		int status;
638 
639 		udc_device.dev.platform_data = config;
640 		status = platform_device_register(&udc_device);
641 		if (status)
642 			pr_debug("can't register UDC device, %d\n", status);
643 		/* udc driver gates 48MHz by D+ pullup */
644 	}
645 #endif
646 
647 	if (IS_ENABLED(CONFIG_USB_OHCI_HCD) && config->register_host) {
648 		int status;
649 
650 		ohci_device.dev.platform_data = config;
651 		dma_direct_set_offset(&ohci_device.dev, PHYS_OFFSET,
652 				      OMAP1510_LB_OFFSET, (u64)-1);
653 		status = platform_device_register(&ohci_device);
654 		if (status)
655 			pr_debug("can't register OHCI device, %d\n", status);
656 		/* hcd explicitly gates 48MHz */
657 
658 		config->lb_reset = omap_1510_local_bus_reset;
659 	}
660 }
661 
662 #else
omap_1510_usb_init(struct omap_usb_config * config)663 static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
664 #endif
665 
omap1_usb_init(struct omap_usb_config * _pdata)666 void __init omap1_usb_init(struct omap_usb_config *_pdata)
667 {
668 	struct omap_usb_config *pdata;
669 
670 	pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
671 	if (!pdata)
672 		return;
673 
674 	pdata->usb0_init = omap1_usb0_init;
675 	pdata->usb1_init = omap1_usb1_init;
676 	pdata->usb2_init = omap1_usb2_init;
677 	udc_device_init(pdata);
678 	ohci_device_init(pdata);
679 	otg_device_init(pdata);
680 
681 	if (cpu_is_omap16xx())
682 		omap_otg_init(pdata);
683 	else if (cpu_is_omap15xx())
684 		omap_1510_usb_init(pdata);
685 	else
686 		printk(KERN_ERR "USB: No init for your chip yet\n");
687 }
688