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1/*
2 * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
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#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 <plat/mux.h>
30#include <plat/usb.h>
31
32/* These routines should handle the standard chip-specific modes
33 * for usb0/1/2 ports, covering basic mux and transceiver setup.
34 *
35 * Some board-*.c files will need to set up additional mux options,
36 * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
37 */
38
39/* TESTED ON:
40 * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
41 * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
42 * - 5912 OSK UDC, with *nonstandard* A-to-A cable
43 * - 1510 Innovator UDC with bundled usb0 cable
44 * - 1510 Innovator OHCI with bundled usb1/usb2 cable
45 * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
46 * - 1710 custom development board using alternate pin group
47 * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
48 */
49
50#define INT_USB_IRQ_GEN IH2_BASE + 20
51#define INT_USB_IRQ_NISO IH2_BASE + 30
52#define INT_USB_IRQ_ISO IH2_BASE + 29
53#define INT_USB_IRQ_HGEN INT_USB_HHC_1
54#define INT_USB_IRQ_OTG IH2_BASE + 8
55
56#ifdef CONFIG_USB_GADGET_OMAP
57
58static struct resource udc_resources[] = {
59 /* order is significant! */
60 { /* registers */
61 .start = UDC_BASE,
62 .end = UDC_BASE + 0xff,
63 .flags = IORESOURCE_MEM,
64 }, { /* general IRQ */
65 .start = INT_USB_IRQ_GEN,
66 .flags = IORESOURCE_IRQ,
67 }, { /* PIO IRQ */
68 .start = INT_USB_IRQ_NISO,
69 .flags = IORESOURCE_IRQ,
70 }, { /* SOF IRQ */
71 .start = INT_USB_IRQ_ISO,
72 .flags = IORESOURCE_IRQ,
73 },
74};
75
76static u64 udc_dmamask = ~(u32)0;
77
78static struct platform_device udc_device = {
79 .name = "omap_udc",
80 .id = -1,
81 .dev = {
82 .dma_mask = &udc_dmamask,
83 .coherent_dma_mask = 0xffffffff,
84 },
85 .num_resources = ARRAY_SIZE(udc_resources),
86 .resource = udc_resources,
87};
88
89static inline void udc_device_init(struct omap_usb_config *pdata)
90{
91 /* IRQ numbers for omap7xx */
92 if(cpu_is_omap7xx()) {
93 udc_resources[1].start = INT_7XX_USB_GENI;
94 udc_resources[2].start = INT_7XX_USB_NON_ISO;
95 udc_resources[3].start = INT_7XX_USB_ISO;
96 }
97 pdata->udc_device = &udc_device;
98}
99
100#else
101
102static inline void udc_device_init(struct omap_usb_config *pdata)
103{
104}
105
106#endif
107
108#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
109
110/* The dmamask must be set for OHCI to work */
111static u64 ohci_dmamask = ~(u32)0;
112
113static struct resource ohci_resources[] = {
114 {
115 .start = OMAP_OHCI_BASE,
116 .end = OMAP_OHCI_BASE + 0xff,
117 .flags = IORESOURCE_MEM,
118 },
119 {
120 .start = INT_USB_IRQ_HGEN,
121 .flags = IORESOURCE_IRQ,
122 },
123};
124
125static struct platform_device ohci_device = {
126 .name = "ohci",
127 .id = -1,
128 .dev = {
129 .dma_mask = &ohci_dmamask,
130 .coherent_dma_mask = 0xffffffff,
131 },
132 .num_resources = ARRAY_SIZE(ohci_resources),
133 .resource = ohci_resources,
134};
135
136static inline void ohci_device_init(struct omap_usb_config *pdata)
137{
138 if (cpu_is_omap7xx())
139 ohci_resources[1].start = INT_7XX_USB_HHC_1;
140 pdata->ohci_device = &ohci_device;
141}
142
143#else
144
145static inline void ohci_device_init(struct omap_usb_config *pdata)
146{
147}
148
149#endif
150
151#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
152
153static struct resource otg_resources[] = {
154 /* order is significant! */
155 {
156 .start = OTG_BASE,
157 .end = OTG_BASE + 0xff,
158 .flags = IORESOURCE_MEM,
159 }, {
160 .start = INT_USB_IRQ_OTG,
161 .flags = IORESOURCE_IRQ,
162 },
163};
164
165static struct platform_device otg_device = {
166 .name = "omap_otg",
167 .id = -1,
168 .num_resources = ARRAY_SIZE(otg_resources),
169 .resource = otg_resources,
170};
171
172static inline void otg_device_init(struct omap_usb_config *pdata)
173{
174 if (cpu_is_omap7xx())
175 otg_resources[1].start = INT_7XX_USB_OTG;
176 pdata->otg_device = &otg_device;
177}
178
179#else
180
181static inline void otg_device_init(struct omap_usb_config *pdata)
182{
183}
184
185#endif
186
187u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
188{
189 u32 syscon1 = 0;
190
191 if (nwires == 0) {
192 if (!cpu_is_omap15xx()) {
193 u32 l;
194
195 /* pulldown D+/D- */
196 l = omap_readl(USB_TRANSCEIVER_CTRL);
197 l &= ~(3 << 1);
198 omap_writel(l, USB_TRANSCEIVER_CTRL);
199 }
200 return 0;
201 }
202
203 if (is_device) {
204 if (cpu_is_omap7xx()) {
205 omap_cfg_reg(AA17_7XX_USB_DM);
206 omap_cfg_reg(W16_7XX_USB_PU_EN);
207 omap_cfg_reg(W17_7XX_USB_VBUSI);
208 omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
209 omap_cfg_reg(W19_7XX_USB_DCRST);
210 } else
211 omap_cfg_reg(W4_USB_PUEN);
212 }
213
214 if (nwires == 2) {
215 u32 l;
216
217 // omap_cfg_reg(P9_USB_DP);
218 // omap_cfg_reg(R8_USB_DM);
219
220 if (cpu_is_omap15xx()) {
221 /* This works on 1510-Innovator */
222 return 0;
223 }
224
225 /* NOTES:
226 * - peripheral should configure VBUS detection!
227 * - only peripherals may use the internal D+/D- pulldowns
228 * - OTG support on this port not yet written
229 */
230
231 /* Don't do this for omap7xx -- it causes USB to not work correctly */
232 if (!cpu_is_omap7xx()) {
233 l = omap_readl(USB_TRANSCEIVER_CTRL);
234 l &= ~(7 << 4);
235 if (!is_device)
236 l |= (3 << 1);
237 omap_writel(l, USB_TRANSCEIVER_CTRL);
238 }
239
240 return 3 << 16;
241 }
242
243 /* alternate pin config, external transceiver */
244 if (cpu_is_omap15xx()) {
245 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
246 return 0;
247 }
248
249 omap_cfg_reg(V6_USB0_TXD);
250 omap_cfg_reg(W9_USB0_TXEN);
251 omap_cfg_reg(W5_USB0_SE0);
252 if (nwires != 3)
253 omap_cfg_reg(Y5_USB0_RCV);
254
255 /* NOTE: SPEED and SUSP aren't configured here. OTG hosts
256 * may be able to use I2C requests to set those bits along
257 * with VBUS switching and overcurrent detection.
258 */
259
260 if (nwires != 6) {
261 u32 l;
262
263 l = omap_readl(USB_TRANSCEIVER_CTRL);
264 l &= ~CONF_USB2_UNI_R;
265 omap_writel(l, USB_TRANSCEIVER_CTRL);
266 }
267
268 switch (nwires) {
269 case 3:
270 syscon1 = 2;
271 break;
272 case 4:
273 syscon1 = 1;
274 break;
275 case 6:
276 syscon1 = 3;
277 {
278 u32 l;
279
280 omap_cfg_reg(AA9_USB0_VP);
281 omap_cfg_reg(R9_USB0_VM);
282 l = omap_readl(USB_TRANSCEIVER_CTRL);
283 l |= CONF_USB2_UNI_R;
284 omap_writel(l, USB_TRANSCEIVER_CTRL);
285 }
286 break;
287 default:
288 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
289 0, nwires);
290 }
291
292 return syscon1 << 16;
293}
294
295u32 __init omap1_usb1_init(unsigned nwires)
296{
297 u32 syscon1 = 0;
298
299 if (!cpu_is_omap15xx() && nwires != 6) {
300 u32 l;
301
302 l = omap_readl(USB_TRANSCEIVER_CTRL);
303 l &= ~CONF_USB1_UNI_R;
304 omap_writel(l, USB_TRANSCEIVER_CTRL);
305 }
306 if (nwires == 0)
307 return 0;
308
309 /* external transceiver */
310 omap_cfg_reg(USB1_TXD);
311 omap_cfg_reg(USB1_TXEN);
312 if (nwires != 3)
313 omap_cfg_reg(USB1_RCV);
314
315 if (cpu_is_omap15xx()) {
316 omap_cfg_reg(USB1_SEO);
317 omap_cfg_reg(USB1_SPEED);
318 // SUSP
319 } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
320 omap_cfg_reg(W13_1610_USB1_SE0);
321 omap_cfg_reg(R13_1610_USB1_SPEED);
322 // SUSP
323 } else if (cpu_is_omap1710()) {
324 omap_cfg_reg(R13_1710_USB1_SE0);
325 // SUSP
326 } else {
327 pr_debug("usb%d cpu unrecognized\n", 1);
328 return 0;
329 }
330
331 switch (nwires) {
332 case 2:
333 goto bad;
334 case 3:
335 syscon1 = 2;
336 break;
337 case 4:
338 syscon1 = 1;
339 break;
340 case 6:
341 syscon1 = 3;
342 omap_cfg_reg(USB1_VP);
343 omap_cfg_reg(USB1_VM);
344 if (!cpu_is_omap15xx()) {
345 u32 l;
346
347 l = omap_readl(USB_TRANSCEIVER_CTRL);
348 l |= CONF_USB1_UNI_R;
349 omap_writel(l, USB_TRANSCEIVER_CTRL);
350 }
351 break;
352 default:
353bad:
354 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
355 1, nwires);
356 }
357
358 return syscon1 << 20;
359}
360
361u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
362{
363 u32 syscon1 = 0;
364
365 /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
366 if (alt_pingroup || nwires == 0)
367 return 0;
368
369 if (!cpu_is_omap15xx() && nwires != 6) {
370 u32 l;
371
372 l = omap_readl(USB_TRANSCEIVER_CTRL);
373 l &= ~CONF_USB2_UNI_R;
374 omap_writel(l, USB_TRANSCEIVER_CTRL);
375 }
376
377 /* external transceiver */
378 if (cpu_is_omap15xx()) {
379 omap_cfg_reg(USB2_TXD);
380 omap_cfg_reg(USB2_TXEN);
381 omap_cfg_reg(USB2_SEO);
382 if (nwires != 3)
383 omap_cfg_reg(USB2_RCV);
384 /* there is no USB2_SPEED */
385 } else if (cpu_is_omap16xx()) {
386 omap_cfg_reg(V6_USB2_TXD);
387 omap_cfg_reg(W9_USB2_TXEN);
388 omap_cfg_reg(W5_USB2_SE0);
389 if (nwires != 3)
390 omap_cfg_reg(Y5_USB2_RCV);
391 // FIXME omap_cfg_reg(USB2_SPEED);
392 } else {
393 pr_debug("usb%d cpu unrecognized\n", 1);
394 return 0;
395 }
396
397 // omap_cfg_reg(USB2_SUSP);
398
399 switch (nwires) {
400 case 2:
401 goto bad;
402 case 3:
403 syscon1 = 2;
404 break;
405 case 4:
406 syscon1 = 1;
407 break;
408 case 5:
409 goto bad;
410 case 6:
411 syscon1 = 3;
412 if (cpu_is_omap15xx()) {
413 omap_cfg_reg(USB2_VP);
414 omap_cfg_reg(USB2_VM);
415 } else {
416 u32 l;
417
418 omap_cfg_reg(AA9_USB2_VP);
419 omap_cfg_reg(R9_USB2_VM);
420 l = omap_readl(USB_TRANSCEIVER_CTRL);
421 l |= CONF_USB2_UNI_R;
422 omap_writel(l, USB_TRANSCEIVER_CTRL);
423 }
424 break;
425 default:
426bad:
427 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
428 2, nwires);
429 }
430
431 return syscon1 << 24;
432}
433
434#ifdef CONFIG_ARCH_OMAP15XX
435
436/* ULPD_DPLL_CTRL */
437#define DPLL_IOB (1 << 13)
438#define DPLL_PLL_ENABLE (1 << 4)
439#define DPLL_LOCK (1 << 0)
440
441/* ULPD_APLL_CTRL */
442#define APLL_NDPLL_SWITCH (1 << 0)
443
444static void __init omap_1510_usb_init(struct omap_usb_config *config)
445{
446 unsigned int val;
447 u16 w;
448
449 config->usb0_init(config->pins[0], is_usb0_device(config));
450 config->usb1_init(config->pins[1]);
451 config->usb2_init(config->pins[2], 0);
452
453 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
454 val |= (config->hmc_mode << 1);
455 omap_writel(val, MOD_CONF_CTRL_0);
456
457 printk("USB: hmc %d", config->hmc_mode);
458 if (config->pins[0])
459 printk(", usb0 %d wires%s", config->pins[0],
460 is_usb0_device(config) ? " (dev)" : "");
461 if (config->pins[1])
462 printk(", usb1 %d wires", config->pins[1]);
463 if (config->pins[2])
464 printk(", usb2 %d wires", config->pins[2]);
465 printk("\n");
466
467 /* use DPLL for 48 MHz function clock */
468 pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
469 omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
470
471 w = omap_readw(ULPD_APLL_CTRL);
472 w &= ~APLL_NDPLL_SWITCH;
473 omap_writew(w, ULPD_APLL_CTRL);
474
475 w = omap_readw(ULPD_DPLL_CTRL);
476 w |= DPLL_IOB | DPLL_PLL_ENABLE;
477 omap_writew(w, ULPD_DPLL_CTRL);
478
479 w = omap_readw(ULPD_SOFT_REQ);
480 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
481 omap_writew(w, ULPD_SOFT_REQ);
482
483 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
484 cpu_relax();
485
486#ifdef CONFIG_USB_GADGET_OMAP
487 if (config->register_dev) {
488 int status;
489
490 udc_device.dev.platform_data = config;
491 status = platform_device_register(&udc_device);
492 if (status)
493 pr_debug("can't register UDC device, %d\n", status);
494 /* udc driver gates 48MHz by D+ pullup */
495 }
496#endif
497
498#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
499 if (config->register_host) {
500 int status;
501
502 ohci_device.dev.platform_data = config;
503 status = platform_device_register(&ohci_device);
504 if (status)
505 pr_debug("can't register OHCI device, %d\n", status);
506 /* hcd explicitly gates 48MHz */
507 }
508#endif
509}
510
511#else
512static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
513#endif
514
515void __init omap1_usb_init(struct omap_usb_config *pdata)
516{
517 pdata->usb0_init = omap1_usb0_init;
518 pdata->usb1_init = omap1_usb1_init;
519 pdata->usb2_init = omap1_usb2_init;
520 udc_device_init(pdata);
521 ohci_device_init(pdata);
522 otg_device_init(pdata);
523
524 if (cpu_is_omap7xx() || cpu_is_omap16xx())
525 omap_otg_init(pdata);
526 else if (cpu_is_omap15xx())
527 omap_1510_usb_init(pdata);
528 else
529 printk(KERN_ERR "USB: No init for your chip yet\n");
530}
1/*
2 * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
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#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 <plat/mux.h>
30#include <plat/usb.h>
31
32#include "common.h"
33
34/* These routines should handle the standard chip-specific modes
35 * for usb0/1/2 ports, covering basic mux and transceiver setup.
36 *
37 * Some board-*.c files will need to set up additional mux options,
38 * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
39 */
40
41/* TESTED ON:
42 * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
43 * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
44 * - 5912 OSK UDC, with *nonstandard* A-to-A cable
45 * - 1510 Innovator UDC with bundled usb0 cable
46 * - 1510 Innovator OHCI with bundled usb1/usb2 cable
47 * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
48 * - 1710 custom development board using alternate pin group
49 * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
50 */
51
52#define INT_USB_IRQ_GEN IH2_BASE + 20
53#define INT_USB_IRQ_NISO IH2_BASE + 30
54#define INT_USB_IRQ_ISO IH2_BASE + 29
55#define INT_USB_IRQ_HGEN INT_USB_HHC_1
56#define INT_USB_IRQ_OTG IH2_BASE + 8
57
58#ifdef CONFIG_USB_GADGET_OMAP
59
60static struct resource udc_resources[] = {
61 /* order is significant! */
62 { /* registers */
63 .start = UDC_BASE,
64 .end = UDC_BASE + 0xff,
65 .flags = IORESOURCE_MEM,
66 }, { /* general IRQ */
67 .start = INT_USB_IRQ_GEN,
68 .flags = IORESOURCE_IRQ,
69 }, { /* PIO IRQ */
70 .start = INT_USB_IRQ_NISO,
71 .flags = IORESOURCE_IRQ,
72 }, { /* SOF IRQ */
73 .start = INT_USB_IRQ_ISO,
74 .flags = IORESOURCE_IRQ,
75 },
76};
77
78static u64 udc_dmamask = ~(u32)0;
79
80static struct platform_device udc_device = {
81 .name = "omap_udc",
82 .id = -1,
83 .dev = {
84 .dma_mask = &udc_dmamask,
85 .coherent_dma_mask = 0xffffffff,
86 },
87 .num_resources = ARRAY_SIZE(udc_resources),
88 .resource = udc_resources,
89};
90
91static inline void udc_device_init(struct omap_usb_config *pdata)
92{
93 /* IRQ numbers for omap7xx */
94 if(cpu_is_omap7xx()) {
95 udc_resources[1].start = INT_7XX_USB_GENI;
96 udc_resources[2].start = INT_7XX_USB_NON_ISO;
97 udc_resources[3].start = INT_7XX_USB_ISO;
98 }
99 pdata->udc_device = &udc_device;
100}
101
102#else
103
104static inline void udc_device_init(struct omap_usb_config *pdata)
105{
106}
107
108#endif
109
110#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
111
112/* The dmamask must be set for OHCI to work */
113static u64 ohci_dmamask = ~(u32)0;
114
115static struct resource ohci_resources[] = {
116 {
117 .start = OMAP_OHCI_BASE,
118 .end = OMAP_OHCI_BASE + 0xff,
119 .flags = IORESOURCE_MEM,
120 },
121 {
122 .start = INT_USB_IRQ_HGEN,
123 .flags = IORESOURCE_IRQ,
124 },
125};
126
127static struct platform_device ohci_device = {
128 .name = "ohci",
129 .id = -1,
130 .dev = {
131 .dma_mask = &ohci_dmamask,
132 .coherent_dma_mask = 0xffffffff,
133 },
134 .num_resources = ARRAY_SIZE(ohci_resources),
135 .resource = ohci_resources,
136};
137
138static inline void ohci_device_init(struct omap_usb_config *pdata)
139{
140 if (cpu_is_omap7xx())
141 ohci_resources[1].start = INT_7XX_USB_HHC_1;
142 pdata->ohci_device = &ohci_device;
143 pdata->ocpi_enable = &ocpi_enable;
144}
145
146#else
147
148static inline void ohci_device_init(struct omap_usb_config *pdata)
149{
150}
151
152#endif
153
154#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
155
156static struct resource otg_resources[] = {
157 /* order is significant! */
158 {
159 .start = OTG_BASE,
160 .end = OTG_BASE + 0xff,
161 .flags = IORESOURCE_MEM,
162 }, {
163 .start = INT_USB_IRQ_OTG,
164 .flags = IORESOURCE_IRQ,
165 },
166};
167
168static struct platform_device otg_device = {
169 .name = "omap_otg",
170 .id = -1,
171 .num_resources = ARRAY_SIZE(otg_resources),
172 .resource = otg_resources,
173};
174
175static inline void otg_device_init(struct omap_usb_config *pdata)
176{
177 if (cpu_is_omap7xx())
178 otg_resources[1].start = INT_7XX_USB_OTG;
179 pdata->otg_device = &otg_device;
180}
181
182#else
183
184static inline void otg_device_init(struct omap_usb_config *pdata)
185{
186}
187
188#endif
189
190u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
191{
192 u32 syscon1 = 0;
193
194 if (nwires == 0) {
195 if (!cpu_is_omap15xx()) {
196 u32 l;
197
198 /* pulldown D+/D- */
199 l = omap_readl(USB_TRANSCEIVER_CTRL);
200 l &= ~(3 << 1);
201 omap_writel(l, USB_TRANSCEIVER_CTRL);
202 }
203 return 0;
204 }
205
206 if (is_device) {
207 if (cpu_is_omap7xx()) {
208 omap_cfg_reg(AA17_7XX_USB_DM);
209 omap_cfg_reg(W16_7XX_USB_PU_EN);
210 omap_cfg_reg(W17_7XX_USB_VBUSI);
211 omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
212 omap_cfg_reg(W19_7XX_USB_DCRST);
213 } else
214 omap_cfg_reg(W4_USB_PUEN);
215 }
216
217 if (nwires == 2) {
218 u32 l;
219
220 // omap_cfg_reg(P9_USB_DP);
221 // omap_cfg_reg(R8_USB_DM);
222
223 if (cpu_is_omap15xx()) {
224 /* This works on 1510-Innovator */
225 return 0;
226 }
227
228 /* NOTES:
229 * - peripheral should configure VBUS detection!
230 * - only peripherals may use the internal D+/D- pulldowns
231 * - OTG support on this port not yet written
232 */
233
234 /* Don't do this for omap7xx -- it causes USB to not work correctly */
235 if (!cpu_is_omap7xx()) {
236 l = omap_readl(USB_TRANSCEIVER_CTRL);
237 l &= ~(7 << 4);
238 if (!is_device)
239 l |= (3 << 1);
240 omap_writel(l, USB_TRANSCEIVER_CTRL);
241 }
242
243 return 3 << 16;
244 }
245
246 /* alternate pin config, external transceiver */
247 if (cpu_is_omap15xx()) {
248 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
249 return 0;
250 }
251
252 omap_cfg_reg(V6_USB0_TXD);
253 omap_cfg_reg(W9_USB0_TXEN);
254 omap_cfg_reg(W5_USB0_SE0);
255 if (nwires != 3)
256 omap_cfg_reg(Y5_USB0_RCV);
257
258 /* NOTE: SPEED and SUSP aren't configured here. OTG hosts
259 * may be able to use I2C requests to set those bits along
260 * with VBUS switching and overcurrent detection.
261 */
262
263 if (nwires != 6) {
264 u32 l;
265
266 l = omap_readl(USB_TRANSCEIVER_CTRL);
267 l &= ~CONF_USB2_UNI_R;
268 omap_writel(l, USB_TRANSCEIVER_CTRL);
269 }
270
271 switch (nwires) {
272 case 3:
273 syscon1 = 2;
274 break;
275 case 4:
276 syscon1 = 1;
277 break;
278 case 6:
279 syscon1 = 3;
280 {
281 u32 l;
282
283 omap_cfg_reg(AA9_USB0_VP);
284 omap_cfg_reg(R9_USB0_VM);
285 l = omap_readl(USB_TRANSCEIVER_CTRL);
286 l |= CONF_USB2_UNI_R;
287 omap_writel(l, USB_TRANSCEIVER_CTRL);
288 }
289 break;
290 default:
291 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
292 0, nwires);
293 }
294
295 return syscon1 << 16;
296}
297
298u32 __init omap1_usb1_init(unsigned nwires)
299{
300 u32 syscon1 = 0;
301
302 if (!cpu_is_omap15xx() && nwires != 6) {
303 u32 l;
304
305 l = omap_readl(USB_TRANSCEIVER_CTRL);
306 l &= ~CONF_USB1_UNI_R;
307 omap_writel(l, USB_TRANSCEIVER_CTRL);
308 }
309 if (nwires == 0)
310 return 0;
311
312 /* external transceiver */
313 omap_cfg_reg(USB1_TXD);
314 omap_cfg_reg(USB1_TXEN);
315 if (nwires != 3)
316 omap_cfg_reg(USB1_RCV);
317
318 if (cpu_is_omap15xx()) {
319 omap_cfg_reg(USB1_SEO);
320 omap_cfg_reg(USB1_SPEED);
321 // SUSP
322 } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
323 omap_cfg_reg(W13_1610_USB1_SE0);
324 omap_cfg_reg(R13_1610_USB1_SPEED);
325 // SUSP
326 } else if (cpu_is_omap1710()) {
327 omap_cfg_reg(R13_1710_USB1_SE0);
328 // SUSP
329 } else {
330 pr_debug("usb%d cpu unrecognized\n", 1);
331 return 0;
332 }
333
334 switch (nwires) {
335 case 2:
336 goto bad;
337 case 3:
338 syscon1 = 2;
339 break;
340 case 4:
341 syscon1 = 1;
342 break;
343 case 6:
344 syscon1 = 3;
345 omap_cfg_reg(USB1_VP);
346 omap_cfg_reg(USB1_VM);
347 if (!cpu_is_omap15xx()) {
348 u32 l;
349
350 l = omap_readl(USB_TRANSCEIVER_CTRL);
351 l |= CONF_USB1_UNI_R;
352 omap_writel(l, USB_TRANSCEIVER_CTRL);
353 }
354 break;
355 default:
356bad:
357 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
358 1, nwires);
359 }
360
361 return syscon1 << 20;
362}
363
364u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
365{
366 u32 syscon1 = 0;
367
368 /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
369 if (alt_pingroup || nwires == 0)
370 return 0;
371
372 if (!cpu_is_omap15xx() && nwires != 6) {
373 u32 l;
374
375 l = omap_readl(USB_TRANSCEIVER_CTRL);
376 l &= ~CONF_USB2_UNI_R;
377 omap_writel(l, USB_TRANSCEIVER_CTRL);
378 }
379
380 /* external transceiver */
381 if (cpu_is_omap15xx()) {
382 omap_cfg_reg(USB2_TXD);
383 omap_cfg_reg(USB2_TXEN);
384 omap_cfg_reg(USB2_SEO);
385 if (nwires != 3)
386 omap_cfg_reg(USB2_RCV);
387 /* there is no USB2_SPEED */
388 } else if (cpu_is_omap16xx()) {
389 omap_cfg_reg(V6_USB2_TXD);
390 omap_cfg_reg(W9_USB2_TXEN);
391 omap_cfg_reg(W5_USB2_SE0);
392 if (nwires != 3)
393 omap_cfg_reg(Y5_USB2_RCV);
394 // FIXME omap_cfg_reg(USB2_SPEED);
395 } else {
396 pr_debug("usb%d cpu unrecognized\n", 1);
397 return 0;
398 }
399
400 // omap_cfg_reg(USB2_SUSP);
401
402 switch (nwires) {
403 case 2:
404 goto bad;
405 case 3:
406 syscon1 = 2;
407 break;
408 case 4:
409 syscon1 = 1;
410 break;
411 case 5:
412 goto bad;
413 case 6:
414 syscon1 = 3;
415 if (cpu_is_omap15xx()) {
416 omap_cfg_reg(USB2_VP);
417 omap_cfg_reg(USB2_VM);
418 } else {
419 u32 l;
420
421 omap_cfg_reg(AA9_USB2_VP);
422 omap_cfg_reg(R9_USB2_VM);
423 l = omap_readl(USB_TRANSCEIVER_CTRL);
424 l |= CONF_USB2_UNI_R;
425 omap_writel(l, USB_TRANSCEIVER_CTRL);
426 }
427 break;
428 default:
429bad:
430 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
431 2, nwires);
432 }
433
434 return syscon1 << 24;
435}
436
437#ifdef CONFIG_ARCH_OMAP15XX
438
439/* ULPD_DPLL_CTRL */
440#define DPLL_IOB (1 << 13)
441#define DPLL_PLL_ENABLE (1 << 4)
442#define DPLL_LOCK (1 << 0)
443
444/* ULPD_APLL_CTRL */
445#define APLL_NDPLL_SWITCH (1 << 0)
446
447static void __init omap_1510_usb_init(struct omap_usb_config *config)
448{
449 unsigned int val;
450 u16 w;
451
452 config->usb0_init(config->pins[0], is_usb0_device(config));
453 config->usb1_init(config->pins[1]);
454 config->usb2_init(config->pins[2], 0);
455
456 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
457 val |= (config->hmc_mode << 1);
458 omap_writel(val, MOD_CONF_CTRL_0);
459
460 printk("USB: hmc %d", config->hmc_mode);
461 if (config->pins[0])
462 printk(", usb0 %d wires%s", config->pins[0],
463 is_usb0_device(config) ? " (dev)" : "");
464 if (config->pins[1])
465 printk(", usb1 %d wires", config->pins[1]);
466 if (config->pins[2])
467 printk(", usb2 %d wires", config->pins[2]);
468 printk("\n");
469
470 /* use DPLL for 48 MHz function clock */
471 pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
472 omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
473
474 w = omap_readw(ULPD_APLL_CTRL);
475 w &= ~APLL_NDPLL_SWITCH;
476 omap_writew(w, ULPD_APLL_CTRL);
477
478 w = omap_readw(ULPD_DPLL_CTRL);
479 w |= DPLL_IOB | DPLL_PLL_ENABLE;
480 omap_writew(w, ULPD_DPLL_CTRL);
481
482 w = omap_readw(ULPD_SOFT_REQ);
483 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
484 omap_writew(w, ULPD_SOFT_REQ);
485
486 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
487 cpu_relax();
488
489#ifdef CONFIG_USB_GADGET_OMAP
490 if (config->register_dev) {
491 int status;
492
493 udc_device.dev.platform_data = config;
494 status = platform_device_register(&udc_device);
495 if (status)
496 pr_debug("can't register UDC device, %d\n", status);
497 /* udc driver gates 48MHz by D+ pullup */
498 }
499#endif
500
501#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
502 if (config->register_host) {
503 int status;
504
505 ohci_device.dev.platform_data = config;
506 status = platform_device_register(&ohci_device);
507 if (status)
508 pr_debug("can't register OHCI device, %d\n", status);
509 /* hcd explicitly gates 48MHz */
510 }
511#endif
512}
513
514#else
515static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
516#endif
517
518void __init omap1_usb_init(struct omap_usb_config *pdata)
519{
520 pdata->usb0_init = omap1_usb0_init;
521 pdata->usb1_init = omap1_usb1_init;
522 pdata->usb2_init = omap1_usb2_init;
523 udc_device_init(pdata);
524 ohci_device_init(pdata);
525 otg_device_init(pdata);
526
527 if (cpu_is_omap7xx() || cpu_is_omap16xx())
528 omap_otg_init(pdata);
529 else if (cpu_is_omap15xx())
530 omap_1510_usb_init(pdata);
531 else
532 printk(KERN_ERR "USB: No init for your chip yet\n");
533}