Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008, Google Inc. |
| 3 | * All rights reserved. |
| 4 | * |
Subbaraman Narayanamurthy | d8b7afc | 2011-06-30 15:42:41 -0700 | [diff] [blame] | 5 | * Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. |
Shashank Mittal | 23b8f42 | 2010-04-16 19:27:21 -0700 | [diff] [blame] | 6 | * |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in |
| 14 | * the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 20 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 21 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 25 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 27 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <string.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <debug.h> |
| 34 | #include <platform/iomap.h> |
| 35 | #include <platform/irqs.h> |
| 36 | #include <platform/interrupts.h> |
| 37 | #include <kernel/thread.h> |
| 38 | #include <reg.h> |
| 39 | |
| 40 | #include <dev/udc.h> |
| 41 | |
| 42 | #include "hsusb.h" |
| 43 | |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 44 | int charger_usb_disconnected(void); |
| 45 | int charger_usb_i(unsigned current); |
| 46 | int charger_usb_is_pc_connected(void); |
| 47 | int charger_usb_is_charger_connected(void); |
| 48 | |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 49 | /* common code - factor out into a shared file */ |
| 50 | |
| 51 | struct udc_descriptor { |
| 52 | struct udc_descriptor *next; |
| 53 | unsigned short tag; /* ((TYPE << 8) | NUM) */ |
| 54 | unsigned short len; /* total length */ |
| 55 | unsigned char data[0]; |
| 56 | }; |
| 57 | |
| 58 | struct udc_descriptor *udc_descriptor_alloc(unsigned type, unsigned num, unsigned len) |
| 59 | { |
| 60 | struct udc_descriptor *desc; |
| 61 | if ((len > 255) || (len < 2) || (num > 255) || (type > 255)) |
| 62 | return 0; |
| 63 | |
| 64 | if(!(desc = malloc(sizeof(struct udc_descriptor) + len))) |
| 65 | return 0; |
| 66 | |
| 67 | desc->next = 0; |
| 68 | desc->tag = (type << 8) | num; |
| 69 | desc->len = len; |
| 70 | desc->data[0] = len; |
| 71 | desc->data[1] = type; |
| 72 | |
| 73 | return desc; |
| 74 | } |
| 75 | |
| 76 | static struct udc_descriptor *desc_list = 0; |
| 77 | static unsigned next_string_id = 1; |
| 78 | |
| 79 | void udc_descriptor_register(struct udc_descriptor *desc) |
| 80 | { |
| 81 | desc->next = desc_list; |
| 82 | desc_list = desc; |
| 83 | } |
| 84 | |
| 85 | unsigned udc_string_desc_alloc(const char *str) |
| 86 | { |
| 87 | unsigned len; |
| 88 | struct udc_descriptor *desc; |
| 89 | unsigned char *data; |
| 90 | |
| 91 | if (next_string_id > 255) |
| 92 | return 0; |
| 93 | |
| 94 | if (!str) |
| 95 | return 0; |
| 96 | |
| 97 | len = strlen(str); |
| 98 | desc = udc_descriptor_alloc(TYPE_STRING, next_string_id, len * 2 + 2); |
| 99 | if (!desc) |
| 100 | return 0; |
| 101 | next_string_id++; |
| 102 | |
| 103 | /* expand ascii string to utf16 */ |
| 104 | data = desc->data + 2; |
| 105 | while (len-- > 0) { |
| 106 | *data++ = *str++; |
| 107 | *data++ = 0; |
| 108 | } |
| 109 | |
| 110 | udc_descriptor_register(desc); |
| 111 | return desc->tag & 0xff; |
| 112 | } |
| 113 | |
| 114 | /* end of common code */ |
| 115 | |
Ajay Dudani | 7d60552 | 2010-10-01 19:52:37 -0700 | [diff] [blame] | 116 | __WEAK void hsusb_clock_init(void) |
| 117 | { |
Greg Grisco | d625055 | 2011-06-29 14:40:23 -0700 | [diff] [blame^] | 118 | return; |
Ajay Dudani | 7d60552 | 2010-10-01 19:52:37 -0700 | [diff] [blame] | 119 | } |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 120 | |
| 121 | #if 1 |
| 122 | #define DBG(x...) do {} while(0) |
| 123 | #else |
| 124 | #define DBG(x...) dprintf(INFO, x) |
| 125 | #endif |
| 126 | |
| 127 | #define DBG1(x...) dprintf(INFO, x) |
| 128 | |
| 129 | #define usb_status(a,b) |
| 130 | |
| 131 | struct usb_request { |
| 132 | struct udc_request req; |
| 133 | struct ept_queue_item *item; |
| 134 | }; |
| 135 | |
| 136 | struct udc_endpoint |
| 137 | { |
| 138 | struct udc_endpoint *next; |
| 139 | unsigned bit; |
| 140 | struct ept_queue_head *head; |
| 141 | struct usb_request *req; |
| 142 | unsigned char num; |
| 143 | unsigned char in; |
| 144 | unsigned short maxpkt; |
| 145 | }; |
| 146 | |
| 147 | struct udc_endpoint *ept_list = 0; |
| 148 | struct ept_queue_head *epts = 0; |
| 149 | |
| 150 | static int usb_online = 0; |
| 151 | static int usb_highspeed = 0; |
| 152 | |
| 153 | static struct udc_device *the_device; |
| 154 | static struct udc_gadget *the_gadget; |
| 155 | |
| 156 | struct udc_endpoint *_udc_endpoint_alloc(unsigned num, unsigned in, unsigned max_pkt) |
| 157 | { |
| 158 | struct udc_endpoint *ept; |
| 159 | unsigned cfg; |
| 160 | |
| 161 | ept = malloc(sizeof(*ept)); |
| 162 | |
| 163 | ept->maxpkt = max_pkt; |
| 164 | ept->num = num; |
| 165 | ept->in = !!in; |
| 166 | ept->req = 0; |
| 167 | |
| 168 | cfg = CONFIG_MAX_PKT(max_pkt) | CONFIG_ZLT; |
| 169 | |
| 170 | if(ept->in) { |
| 171 | ept->bit = EPT_TX(ept->num); |
| 172 | } else { |
| 173 | ept->bit = EPT_RX(ept->num); |
| 174 | if(num == 0) |
| 175 | cfg |= CONFIG_IOS; |
| 176 | } |
| 177 | |
| 178 | ept->head = epts + (num * 2) + (ept->in); |
| 179 | ept->head->config = cfg; |
| 180 | |
| 181 | ept->next = ept_list; |
| 182 | ept_list = ept; |
| 183 | |
| 184 | // arch_clean_invalidate_cache_range(ept->head, 64); |
| 185 | DBG("ept%d %s @%p/%p max=%d bit=%x\n", |
| 186 | num, in ? "in":"out", ept, ept->head, max_pkt, ept->bit); |
| 187 | |
| 188 | return ept; |
| 189 | } |
| 190 | |
| 191 | static unsigned ept_alloc_table = EPT_TX(0) | EPT_RX(0); |
| 192 | |
| 193 | struct udc_endpoint *udc_endpoint_alloc(unsigned type, unsigned maxpkt) |
| 194 | { |
| 195 | struct udc_endpoint *ept; |
| 196 | unsigned n; |
| 197 | unsigned in; |
| 198 | |
| 199 | if (type == UDC_TYPE_BULK_IN) { |
| 200 | in = 1; |
| 201 | } else if (type == UDC_TYPE_BULK_OUT) { |
| 202 | in = 0; |
| 203 | } else { |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | for (n = 1; n < 16; n++) { |
| 208 | unsigned bit = in ? EPT_TX(n) : EPT_RX(n); |
| 209 | if (ept_alloc_table & bit) |
| 210 | continue; |
| 211 | ept = _udc_endpoint_alloc(n, in, maxpkt); |
| 212 | if (ept) |
| 213 | ept_alloc_table |= bit; |
| 214 | return ept; |
| 215 | } |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | void udc_endpoint_free(struct udc_endpoint *ept) |
| 220 | { |
| 221 | /* todo */ |
| 222 | } |
| 223 | |
| 224 | static void endpoint_enable(struct udc_endpoint *ept, unsigned yes) |
| 225 | { |
| 226 | unsigned n = readl(USB_ENDPTCTRL(ept->num)); |
| 227 | |
| 228 | if(yes) { |
| 229 | if(ept->in) { |
| 230 | n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK); |
| 231 | } else { |
| 232 | n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK); |
| 233 | } |
| 234 | |
| 235 | if(ept->num != 0) { |
| 236 | /* XXX should be more dynamic... */ |
| 237 | if(usb_highspeed) { |
| 238 | ept->head->config = CONFIG_MAX_PKT(512) | CONFIG_ZLT; |
| 239 | } else { |
| 240 | ept->head->config = CONFIG_MAX_PKT(64) | CONFIG_ZLT; |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | writel(n, USB_ENDPTCTRL(ept->num)); |
| 245 | } |
| 246 | |
| 247 | struct udc_request *udc_request_alloc(void) |
| 248 | { |
| 249 | struct usb_request *req; |
| 250 | req = malloc(sizeof(*req)); |
| 251 | req->req.buf = 0; |
| 252 | req->req.length = 0; |
| 253 | req->item = memalign(32, 32); |
| 254 | return &req->req; |
| 255 | } |
| 256 | |
| 257 | void udc_request_free(struct udc_request *req) |
| 258 | { |
| 259 | free(req); |
| 260 | } |
| 261 | |
| 262 | int udc_request_queue(struct udc_endpoint *ept, struct udc_request *_req) |
| 263 | { |
| 264 | struct usb_request *req = (struct usb_request *) _req; |
| 265 | struct ept_queue_item *item = req->item; |
| 266 | unsigned phys = (unsigned) req->req.buf; |
| 267 | |
| 268 | item->next = TERMINATE; |
| 269 | item->info = INFO_BYTES(req->req.length) | INFO_IOC | INFO_ACTIVE; |
| 270 | item->page0 = phys; |
| 271 | item->page1 = (phys & 0xfffff000) + 0x1000; |
| 272 | |
| 273 | enter_critical_section(); |
| 274 | ept->head->next = (unsigned) item; |
| 275 | ept->head->info = 0; |
| 276 | ept->req = req; |
| 277 | |
| 278 | // arch_clean_invalidate_cache_range(item, 32); |
| 279 | // arch_clean_invalidate_cache_range(ept->head, 64); |
| 280 | // arch_clean_invalidate_cache_range(req->req.buf, req->req.length); |
| 281 | DBG("ept%d %s queue req=%p\n", |
| 282 | ept->num, ept->in ? "in" : "out", req); |
| 283 | |
| 284 | writel(ept->bit, USB_ENDPTPRIME); |
| 285 | exit_critical_section(); |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static void handle_ept_complete(struct udc_endpoint *ept) |
| 290 | { |
| 291 | struct ept_queue_item *item; |
| 292 | unsigned actual; |
| 293 | int status; |
| 294 | struct usb_request *req; |
| 295 | |
| 296 | DBG("ept%d %s complete req=%p\n", |
| 297 | ept->num, ept->in ? "in" : "out", ept->req); |
| 298 | |
| 299 | req = ept->req; |
| 300 | if(req) { |
| 301 | ept->req = 0; |
| 302 | |
| 303 | item = req->item; |
| 304 | |
| 305 | /* For some reason we are getting the notification for |
| 306 | * transfer completion before the active bit has cleared. |
| 307 | * HACK: wait for the ACTIVE bit to clear: |
| 308 | */ |
| 309 | while (readl(&(item->info)) & INFO_ACTIVE) ; |
| 310 | |
| 311 | // arch_clean_invalidate_cache_range(item, 32); |
| 312 | // arch_clean_invalidate_cache_range(req->req.buf, req->req.length); |
| 313 | |
| 314 | if(item->info & 0xff) { |
| 315 | actual = 0; |
| 316 | status = -1; |
| 317 | dprintf(INFO, "EP%d/%s FAIL nfo=%x pg0=%x\n", |
| 318 | ept->num, ept->in ? "in" : "out", item->info, item->page0); |
| 319 | } else { |
| 320 | actual = req->req.length - ((item->info >> 16) & 0x7fff); |
| 321 | status = 0; |
| 322 | } |
| 323 | if(req->req.complete) |
| 324 | req->req.complete(&req->req, actual, status); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | static const char *reqname(unsigned r) |
| 329 | { |
| 330 | switch(r) { |
| 331 | case GET_STATUS: return "GET_STATUS"; |
| 332 | case CLEAR_FEATURE: return "CLEAR_FEATURE"; |
| 333 | case SET_FEATURE: return "SET_FEATURE"; |
| 334 | case SET_ADDRESS: return "SET_ADDRESS"; |
| 335 | case GET_DESCRIPTOR: return "GET_DESCRIPTOR"; |
| 336 | case SET_DESCRIPTOR: return "SET_DESCRIPTOR"; |
| 337 | case GET_CONFIGURATION: return "GET_CONFIGURATION"; |
| 338 | case SET_CONFIGURATION: return "SET_CONFIGURATION"; |
| 339 | case GET_INTERFACE: return "GET_INTERFACE"; |
| 340 | case SET_INTERFACE: return "SET_INTERFACE"; |
| 341 | default: return "*UNKNOWN*"; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | static struct udc_endpoint *ep0in, *ep0out; |
| 346 | static struct udc_request *ep0req; |
| 347 | |
| 348 | static void setup_ack(void) |
| 349 | { |
| 350 | ep0req->complete = 0; |
| 351 | ep0req->length = 0; |
| 352 | udc_request_queue(ep0in, ep0req); |
| 353 | } |
| 354 | |
| 355 | static void ep0in_complete(struct udc_request *req, unsigned actual, int status) |
| 356 | { |
| 357 | DBG("ep0in_complete %p %d %d\n", req, actual, status); |
| 358 | if(status == 0) { |
| 359 | req->length = 0; |
| 360 | req->complete = 0; |
| 361 | udc_request_queue(ep0out, req); |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | static void setup_tx(void *buf, unsigned len) |
| 366 | { |
| 367 | DBG("setup_tx %p %d\n", buf, len); |
| 368 | memcpy(ep0req->buf, buf, len); |
| 369 | ep0req->complete = ep0in_complete; |
| 370 | ep0req->length = len; |
| 371 | udc_request_queue(ep0in, ep0req); |
| 372 | } |
| 373 | |
| 374 | static unsigned char usb_config_value = 0; |
| 375 | |
| 376 | #define SETUP(type,request) (((type) << 8) | (request)) |
| 377 | |
Subbaraman Narayanamurthy | d8b7afc | 2011-06-30 15:42:41 -0700 | [diff] [blame] | 378 | static void set_test_mode(uint16_t value) |
| 379 | { |
| 380 | uint32_t mode; |
| 381 | if(value == TEST_PACKET) |
| 382 | { |
| 383 | dprintf(ALWAYS,"Entering test mode for TST_PKT\n"); |
| 384 | mode = readl(USB_PORTSC) & (~PORTSC_PTC); |
| 385 | writel(mode | PORTSC_PTC_TST_PKT, USB_PORTSC); |
| 386 | } |
| 387 | } |
| 388 | |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 389 | static void handle_setup(struct udc_endpoint *ept) |
| 390 | { |
| 391 | struct setup_packet s; |
| 392 | |
| 393 | memcpy(&s, ept->head->setup_data, sizeof(s)); |
| 394 | writel(ept->bit, USB_ENDPTSETUPSTAT); |
| 395 | |
| 396 | #if 0 |
| 397 | DBG("handle_setup type=0x%02x req=0x%02x val=%d idx=%d len=%d (%s)\n", |
| 398 | s.type, s.request, s.value, s.index, s.length, |
| 399 | reqname(s.request)); |
| 400 | #endif |
| 401 | switch (SETUP(s.type,s.request)) { |
| 402 | case SETUP(DEVICE_READ, GET_STATUS): { |
| 403 | unsigned zero = 0; |
| 404 | if (s.length == 2) { |
| 405 | setup_tx(&zero, 2); |
| 406 | return; |
| 407 | } |
| 408 | break; |
| 409 | } |
| 410 | case SETUP(DEVICE_READ, GET_DESCRIPTOR): { |
| 411 | struct udc_descriptor *desc; |
| 412 | /* usb_highspeed? */ |
| 413 | for (desc = desc_list; desc; desc = desc->next) { |
| 414 | if (desc->tag == s.value) { |
| 415 | unsigned len = desc->len; |
| 416 | if (len > s.length) len = s.length; |
| 417 | setup_tx(desc->data, len); |
| 418 | return; |
| 419 | } |
| 420 | } |
| 421 | break; |
| 422 | } |
| 423 | case SETUP(DEVICE_READ, GET_CONFIGURATION): |
| 424 | /* disabling this causes data transaction failures on OSX. Why? */ |
| 425 | if ((s.value == 0) && (s.index == 0) && (s.length == 1)) { |
| 426 | setup_tx(&usb_config_value, 1); |
| 427 | return; |
| 428 | } |
| 429 | break; |
| 430 | case SETUP(DEVICE_WRITE, SET_CONFIGURATION): |
| 431 | if (s.value == 1) { |
| 432 | struct udc_endpoint *ept; |
| 433 | /* enable endpoints */ |
| 434 | for (ept = ept_list; ept; ept = ept->next){ |
| 435 | if (ept->num == 0) |
| 436 | continue; |
| 437 | endpoint_enable(ept, s.value); |
| 438 | } |
| 439 | usb_config_value = 1; |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 440 | #ifdef ENABLE_BATTERY_CHARGING |
| 441 | if(HOST_CHARGER == TRUE) { |
| 442 | charger_usb_i(500); |
| 443 | } |
| 444 | #endif |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 445 | the_gadget->notify(the_gadget, UDC_EVENT_ONLINE); |
| 446 | } else { |
| 447 | writel(0, USB_ENDPTCTRL(1)); |
| 448 | usb_config_value = 0; |
| 449 | the_gadget->notify(the_gadget, UDC_EVENT_OFFLINE); |
| 450 | } |
| 451 | setup_ack(); |
| 452 | usb_online = s.value ? 1 : 0; |
| 453 | usb_status(s.value ? 1 : 0, usb_highspeed); |
| 454 | return; |
| 455 | case SETUP(DEVICE_WRITE, SET_ADDRESS): |
| 456 | /* write address delayed (will take effect |
| 457 | ** after the next IN txn) |
| 458 | */ |
| 459 | writel((s.value << 25) | (1 << 24), USB_DEVICEADDR); |
| 460 | setup_ack(); |
| 461 | return; |
| 462 | case SETUP(INTERFACE_WRITE, SET_INTERFACE): |
| 463 | /* if we ack this everything hangs */ |
| 464 | /* per spec, STALL is valid if there is not alt func */ |
| 465 | goto stall; |
Subbaraman Narayanamurthy | d8b7afc | 2011-06-30 15:42:41 -0700 | [diff] [blame] | 466 | case SETUP(DEVICE_WRITE, SET_FEATURE): |
| 467 | setup_ack(); |
| 468 | /* TODO: Use s.value and fix byte ordering */ |
| 469 | set_test_mode(s.index); |
| 470 | return; |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 471 | case SETUP(ENDPOINT_WRITE, CLEAR_FEATURE): { |
| 472 | struct udc_endpoint *ept; |
| 473 | unsigned num = s.index & 15; |
| 474 | unsigned in = !!(s.index & 0x80); |
| 475 | |
| 476 | if ((s.value == 0) && (s.length == 0)) { |
| 477 | DBG("clr feat %d %d\n", num, in); |
| 478 | for (ept = ept_list; ept; ept = ept->next) { |
| 479 | if ((ept->num == num) && (ept->in == in)) { |
| 480 | endpoint_enable(ept, 1); |
| 481 | setup_ack(); |
| 482 | return; |
| 483 | } |
| 484 | } |
| 485 | } |
| 486 | break; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | dprintf(INFO, "STALL %s %d %d %d %d %d\n", |
| 491 | reqname(s.request), |
| 492 | s.type, s.request, s.value, s.index, s.length); |
| 493 | |
| 494 | stall: |
| 495 | writel((1<<16) | (1 << 0), USB_ENDPTCTRL(ept->num)); |
| 496 | } |
| 497 | |
| 498 | unsigned ulpi_read(unsigned reg) |
| 499 | { |
| 500 | /* initiate read operation */ |
| 501 | writel(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg), |
| 502 | USB_ULPI_VIEWPORT); |
| 503 | |
| 504 | /* wait for completion */ |
| 505 | while(readl(USB_ULPI_VIEWPORT) & ULPI_RUN) ; |
| 506 | |
| 507 | return ULPI_DATA_READ(readl(USB_ULPI_VIEWPORT)); |
| 508 | } |
| 509 | |
| 510 | void ulpi_write(unsigned val, unsigned reg) |
| 511 | { |
| 512 | /* initiate write operation */ |
| 513 | writel(ULPI_RUN | ULPI_WRITE | |
| 514 | ULPI_ADDR(reg) | ULPI_DATA(val), |
| 515 | USB_ULPI_VIEWPORT); |
| 516 | |
| 517 | /* wait for completion */ |
| 518 | while(readl(USB_ULPI_VIEWPORT) & ULPI_RUN) ; |
| 519 | } |
Ajay Dudani | 5a1e330 | 2009-12-05 13:19:17 -0800 | [diff] [blame] | 520 | |
Shashank Mittal | 23b8f42 | 2010-04-16 19:27:21 -0700 | [diff] [blame] | 521 | #define USB_CLK 0x00902910 |
| 522 | #define USB_PHY_CLK 0x00902E20 |
| 523 | #define CLK_RESET_ASSERT 0x1 |
| 524 | #define CLK_RESET_DEASSERT 0x0 |
| 525 | #define CLK_RESET(x,y) writel((y), (x)); |
| 526 | |
| 527 | static int msm_otg_xceiv_reset() |
| 528 | { |
| 529 | CLK_RESET(USB_CLK, CLK_RESET_ASSERT); |
| 530 | CLK_RESET(USB_PHY_CLK, CLK_RESET_ASSERT); |
| 531 | mdelay(20); |
| 532 | CLK_RESET(USB_PHY_CLK, CLK_RESET_DEASSERT); |
| 533 | CLK_RESET(USB_CLK, CLK_RESET_DEASSERT); |
| 534 | mdelay(20); |
| 535 | |
| 536 | /* select ULPI phy */ |
| 537 | writel(0x81000000, USB_PORTSC); |
| 538 | return 0; |
| 539 | } |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 540 | |
| 541 | void board_usb_init(void); |
| 542 | void board_ulpi_init(void); |
| 543 | |
| 544 | int udc_init(struct udc_device *dev) |
| 545 | { |
| 546 | hsusb_clock_init(); |
| 547 | |
Subbaraman Narayanamurthy | b0111a1 | 2011-02-03 14:24:16 -0800 | [diff] [blame] | 548 | #ifdef PLATFORM_MSM8X60 |
Subbaraman Narayanamurthy | b0111a1 | 2011-02-03 14:24:16 -0800 | [diff] [blame] | 549 | /* Configure GPIOs for HS_USB */ |
| 550 | hsusb_gpio_init(); |
| 551 | #endif |
Subbaraman Narayanamurthy | b0111a1 | 2011-02-03 14:24:16 -0800 | [diff] [blame] | 552 | |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 553 | epts = memalign(4096, 4096); |
| 554 | |
| 555 | dprintf(INFO, "USB init ept @ %p\n", epts); |
| 556 | memset(epts, 0, 32 * sizeof(struct ept_queue_head)); |
| 557 | |
Ajay Dudani | 232ce81 | 2009-12-02 00:14:11 -0800 | [diff] [blame] | 558 | //dprintf(INFO, "USB ID %08x\n", readl(USB_ID)); |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 559 | // board_usb_init(); |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 560 | |
| 561 | /* select ULPI phy */ |
Shashank Mittal | 23b8f42 | 2010-04-16 19:27:21 -0700 | [diff] [blame] | 562 | #ifdef PLATFORM_MSM8X60 |
| 563 | msm_otg_xceiv_reset(); |
| 564 | #else |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 565 | writel(0x81000000, USB_PORTSC); |
Shashank Mittal | 23b8f42 | 2010-04-16 19:27:21 -0700 | [diff] [blame] | 566 | #endif |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 567 | /* RESET */ |
| 568 | writel(0x00080002, USB_USBCMD); |
| 569 | |
| 570 | thread_sleep(20); |
| 571 | |
| 572 | // board_ulpi_init(); |
| 573 | |
| 574 | // arch_clean_invalidate_cache_range(epts, 32 * sizeof(struct ept_queue_head)); |
| 575 | writel((unsigned) epts, USB_ENDPOINTLISTADDR); |
| 576 | |
| 577 | /* select DEVICE mode */ |
| 578 | writel(0x02, USB_USBMODE); |
| 579 | |
| 580 | writel(0xffffffff, USB_ENDPTFLUSH); |
| 581 | thread_sleep(20); |
| 582 | |
| 583 | ep0out = _udc_endpoint_alloc(0, 0, 64); |
| 584 | ep0in = _udc_endpoint_alloc(0, 1, 64); |
| 585 | ep0req = udc_request_alloc(); |
| 586 | ep0req->buf = malloc(4096); |
| 587 | |
| 588 | { |
| 589 | /* create and register a language table descriptor */ |
| 590 | /* language 0x0409 is US English */ |
| 591 | struct udc_descriptor *desc = udc_descriptor_alloc(TYPE_STRING, 0, 4); |
| 592 | desc->data[2] = 0x09; |
| 593 | desc->data[3] = 0x04; |
| 594 | udc_descriptor_register(desc); |
| 595 | } |
| 596 | |
| 597 | the_device = dev; |
| 598 | return 0; |
| 599 | } |
| 600 | |
| 601 | enum handler_return udc_interrupt(void *arg) |
| 602 | { |
| 603 | struct udc_endpoint *ept; |
| 604 | unsigned ret = INT_NO_RESCHEDULE; |
| 605 | unsigned n = readl(USB_USBSTS); |
| 606 | writel(n, USB_USBSTS); |
| 607 | |
| 608 | n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI); |
| 609 | |
| 610 | if (n == 0) |
| 611 | return ret; |
| 612 | |
| 613 | if (n & STS_URI) { |
| 614 | writel(readl(USB_ENDPTCOMPLETE), USB_ENDPTCOMPLETE); |
| 615 | writel(readl(USB_ENDPTSETUPSTAT), USB_ENDPTSETUPSTAT); |
| 616 | writel(0xffffffff, USB_ENDPTFLUSH); |
| 617 | writel(0, USB_ENDPTCTRL(1)); |
| 618 | DBG1("-- reset --\n"); |
| 619 | usb_online = 0; |
| 620 | usb_config_value = 0; |
| 621 | the_gadget->notify(the_gadget, UDC_EVENT_OFFLINE); |
| 622 | |
| 623 | /* error out any pending reqs */ |
| 624 | for (ept = ept_list; ept; ept = ept->next) { |
| 625 | /* ensure that ept_complete considers |
| 626 | * this to be an error state |
| 627 | */ |
| 628 | if (ept->req) { |
| 629 | ept->req->item->info = INFO_HALTED; |
| 630 | handle_ept_complete(ept); |
| 631 | } |
| 632 | } |
| 633 | usb_status(0, usb_highspeed); |
| 634 | } |
| 635 | if (n & STS_SLI) { |
| 636 | DBG1("-- suspend --\n"); |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 637 | #ifdef ENABLE_BATTERY_CHARGING |
| 638 | if(HOST_CHARGER == TRUE){ |
| 639 | charger_usb_i(2); |
| 640 | } |
| 641 | #endif |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 642 | } |
| 643 | if (n & STS_PCI) { |
| 644 | DBG1("-- portchange --\n"); |
| 645 | unsigned spd = (readl(USB_PORTSC) >> 26) & 3; |
| 646 | if(spd == 2) { |
| 647 | usb_highspeed = 1; |
| 648 | } else { |
| 649 | usb_highspeed = 0; |
| 650 | } |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 651 | #ifdef ENABLE_BATTERY_CHARGING |
| 652 | if(HOST_CHARGER == TRUE && usb_config_value){ |
| 653 | charger_usb_i(500); |
| 654 | } |
| 655 | if(HOST_CHARGER == TRUE && !usb_config_value){ |
| 656 | charger_usb_i(100); |
| 657 | } |
| 658 | #endif |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 659 | } |
| 660 | if (n & STS_UEI) { |
| 661 | dprintf(INFO, "<UEI %x>\n", readl(USB_ENDPTCOMPLETE)); |
| 662 | } |
| 663 | #if 0 |
| 664 | DBG("STS: "); |
| 665 | if (n & STS_UEI) DBG("ERROR "); |
| 666 | if (n & STS_SLI) DBG("SUSPEND "); |
| 667 | if (n & STS_URI) DBG("RESET "); |
| 668 | if (n & STS_PCI) DBG("PORTCHANGE "); |
| 669 | if (n & STS_UI) DBG("USB "); |
| 670 | DBG("\n"); |
| 671 | #endif |
| 672 | if ((n & STS_UI) || (n & STS_UEI)) { |
| 673 | n = readl(USB_ENDPTSETUPSTAT); |
| 674 | if (n & EPT_RX(0)) { |
| 675 | handle_setup(ep0out); |
| 676 | ret = INT_RESCHEDULE; |
| 677 | } |
| 678 | |
| 679 | n = readl(USB_ENDPTCOMPLETE); |
| 680 | if (n != 0) { |
| 681 | writel(n, USB_ENDPTCOMPLETE); |
| 682 | } |
| 683 | |
| 684 | for (ept = ept_list; ept; ept = ept->next){ |
| 685 | if (n & ept->bit) { |
| 686 | handle_ept_complete(ept); |
| 687 | ret = INT_RESCHEDULE; |
| 688 | } |
| 689 | } |
| 690 | } |
| 691 | return ret; |
| 692 | } |
| 693 | |
| 694 | int udc_register_gadget(struct udc_gadget *gadget) |
| 695 | { |
| 696 | if (the_gadget) { |
| 697 | dprintf(CRITICAL, "only one gadget supported\n"); |
| 698 | return -1; |
| 699 | } |
| 700 | the_gadget = gadget; |
| 701 | return 0; |
| 702 | } |
| 703 | |
| 704 | static void udc_ept_desc_fill(struct udc_endpoint *ept, unsigned char *data) |
| 705 | { |
| 706 | data[0] = 7; |
| 707 | data[1] = TYPE_ENDPOINT; |
| 708 | data[2] = ept->num | (ept->in ? 0x80 : 0x00); |
| 709 | data[3] = 0x02; /* bulk -- the only kind we support */ |
| 710 | data[4] = ept->maxpkt; |
| 711 | data[5] = ept->maxpkt >> 8; |
| 712 | data[6] = ept->in ? 0x00 : 0x01; |
| 713 | } |
| 714 | |
| 715 | static unsigned udc_ifc_desc_size(struct udc_gadget *g) |
| 716 | { |
| 717 | return 9 + g->ifc_endpoints * 7; |
| 718 | } |
| 719 | |
| 720 | static void udc_ifc_desc_fill(struct udc_gadget *g, unsigned char *data) |
| 721 | { |
| 722 | unsigned n; |
| 723 | |
| 724 | data[0] = 0x09; |
| 725 | data[1] = TYPE_INTERFACE; |
| 726 | data[2] = 0x00; /* ifc number */ |
| 727 | data[3] = 0x00; /* alt number */ |
| 728 | data[4] = g->ifc_endpoints; |
| 729 | data[5] = g->ifc_class; |
| 730 | data[6] = g->ifc_subclass; |
| 731 | data[7] = g->ifc_protocol; |
| 732 | data[8] = udc_string_desc_alloc(g->ifc_string); |
| 733 | |
| 734 | data += 9; |
| 735 | for (n = 0; n < g->ifc_endpoints; n++) { |
| 736 | udc_ept_desc_fill(g->ept[n], data); |
| 737 | data += 7; |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | int udc_start(void) |
| 742 | { |
| 743 | struct udc_descriptor *desc; |
| 744 | unsigned char *data; |
| 745 | unsigned size; |
| 746 | |
Chandan Uddaraju | 40b227d | 2010-08-03 19:25:41 -0700 | [diff] [blame] | 747 | dprintf(ALWAYS, "udc_start()\n"); |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 748 | |
| 749 | if (!the_device) { |
| 750 | dprintf(CRITICAL, "udc cannot start before init\n"); |
| 751 | return -1; |
| 752 | } |
| 753 | if (!the_gadget) { |
| 754 | dprintf(CRITICAL, "udc has no gadget registered\n"); |
| 755 | return -1; |
| 756 | } |
| 757 | |
| 758 | /* create our device descriptor */ |
| 759 | desc = udc_descriptor_alloc(TYPE_DEVICE, 0, 18); |
| 760 | data = desc->data; |
Amol Jadi | ca4f4c9 | 2011-01-13 20:19:34 -0800 | [diff] [blame] | 761 | data[2] = 0x00; /* usb spec minor rev */ |
| 762 | data[3] = 0x02; /* usb spec major rev */ |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 763 | data[4] = 0x00; /* class */ |
| 764 | data[5] = 0x00; /* subclass */ |
| 765 | data[6] = 0x00; /* protocol */ |
| 766 | data[7] = 0x40; /* max packet size on ept 0 */ |
| 767 | memcpy(data + 8, &the_device->vendor_id, sizeof(short)); |
| 768 | memcpy(data + 10, &the_device->product_id, sizeof(short)); |
| 769 | memcpy(data + 12, &the_device->version_id, sizeof(short)); |
| 770 | data[14] = udc_string_desc_alloc(the_device->manufacturer); |
| 771 | data[15] = udc_string_desc_alloc(the_device->product); |
| 772 | data[16] = udc_string_desc_alloc(the_device->serialno); |
| 773 | data[17] = 1; /* number of configurations */ |
| 774 | udc_descriptor_register(desc); |
| 775 | |
| 776 | /* create our configuration descriptor */ |
| 777 | size = 9 + udc_ifc_desc_size(the_gadget); |
| 778 | desc = udc_descriptor_alloc(TYPE_CONFIGURATION, 0, size); |
| 779 | data = desc->data; |
| 780 | data[0] = 0x09; |
| 781 | data[2] = size; |
| 782 | data[3] = size >> 8; |
| 783 | data[4] = 0x01; /* number of interfaces */ |
| 784 | data[5] = 0x01; /* configuration value */ |
| 785 | data[6] = 0x00; /* configuration string */ |
| 786 | data[7] = 0x80; /* attributes */ |
| 787 | data[8] = 0x80; /* max power (250ma) -- todo fix this */ |
| 788 | udc_ifc_desc_fill(the_gadget, data + 9); |
| 789 | udc_descriptor_register(desc); |
| 790 | |
Amol Jadi | ca4f4c9 | 2011-01-13 20:19:34 -0800 | [diff] [blame] | 791 | register_int_handler(INT_USB_HS, udc_interrupt, (void*) 0); |
| 792 | writel(STS_URI | STS_SLI | STS_UI | STS_PCI, USB_USBINTR); |
| 793 | unmask_interrupt(INT_USB_HS); |
| 794 | |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 795 | /* go to RUN mode (D+ pullup enable) */ |
| 796 | writel(0x00080001, USB_USBCMD); |
Amol Jadi | ca4f4c9 | 2011-01-13 20:19:34 -0800 | [diff] [blame] | 797 | |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 798 | return 0; |
| 799 | } |
| 800 | |
| 801 | int udc_stop(void) |
| 802 | { |
Shashank Mittal | 237301c | 2010-08-24 19:11:46 -0700 | [diff] [blame] | 803 | int val; |
| 804 | writel(0, USB_USBINTR); |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 805 | mask_interrupt(INT_USB_HS); |
| 806 | |
| 807 | /* disable pullup */ |
Shashank Mittal | d8c42bf | 2010-06-09 15:44:28 -0700 | [diff] [blame] | 808 | writel(0x00080000, USB_USBCMD); |
Shashank Mittal | 237301c | 2010-08-24 19:11:46 -0700 | [diff] [blame] | 809 | #ifdef PLATFORM_MSM8X60 |
| 810 | /* Voting down PLL8 */ |
| 811 | val = readl(0x009034C0); |
| 812 | val &= ~(1<<8); |
| 813 | writel(val, 0x009034C0); |
| 814 | #endif |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 815 | thread_sleep(10); |
| 816 | |
| 817 | return 0; |
| 818 | } |
| 819 | |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 820 | void usb_stop_charging(unsigned stop_charging) |
| 821 | { |
| 822 | ENABLE_CHARGING = !stop_charging; |
| 823 | } |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 824 | |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 825 | static inline unsigned is_usb_charging(void) |
| 826 | { |
| 827 | return ENABLE_CHARGING; |
| 828 | } |
Brian Swetland | 3e7e21a | 2009-01-19 19:41:24 -0800 | [diff] [blame] | 829 | |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 830 | void usb_charger_reset(void) |
| 831 | { |
| 832 | usb_stop_charging(TRUE); |
| 833 | charger_usb_disconnected(); |
| 834 | } |
| 835 | |
| 836 | /* Charger detection code |
| 837 | * Set global flags WALL_CHARGER and |
| 838 | * RETURN: type of charger connected |
| 839 | * CHG_WALL |
| 840 | * CHG_HOST_PC |
| 841 | * */ |
| 842 | int usb_chg_detect_type(void) |
| 843 | { |
| 844 | int ret = CHG_UNDEFINED; |
| 845 | |
| 846 | if ((readl(USB_PORTSC) & PORTSC_LS) == PORTSC_LS) |
| 847 | { |
| 848 | if(charger_usb_is_charger_connected() == TRUE) { |
| 849 | WALL_CHARGER = TRUE; |
| 850 | HOST_CHARGER = FALSE; |
| 851 | charger_usb_i(1500); |
| 852 | ret = CHG_WALL; |
| 853 | } |
| 854 | } |
| 855 | else |
| 856 | { |
| 857 | if(charger_usb_is_pc_connected() == TRUE) { |
| 858 | WALL_CHARGER = FALSE; |
| 859 | HOST_CHARGER = TRUE; |
| 860 | ret = CHG_HOST_PC; |
| 861 | } |
| 862 | } |
| 863 | return ret; |
| 864 | } |
| 865 | |
| 866 | /* check if USB cable is connected |
| 867 | * |
| 868 | * RETURN: If cable connected return 1 |
| 869 | * If cable disconnected return 0 |
| 870 | */ |
| 871 | int is_usb_cable_connected(void) |
| 872 | { |
| 873 | /*Verify B Session Valid Bit to verify vbus status*/ |
| 874 | if (B_SESSION_VALID & readl(USB_OTGSC)) { |
| 875 | return 1; |
| 876 | } else { |
| 877 | return 0; |
| 878 | } |
| 879 | } |
| 880 | |
Shashank Mittal | d8c42bf | 2010-06-09 15:44:28 -0700 | [diff] [blame] | 881 | /* check for USB connection assuming USB is not pulled up. |
| 882 | * It looks for suspend state bit in PORTSC register. |
| 883 | * |
| 884 | * RETURN: If cable connected return 1 |
| 885 | * If cable disconnected return 0 |
| 886 | */ |
| 887 | |
| 888 | int usb_cable_status(void) |
| 889 | { |
| 890 | unsigned ret = 0; |
| 891 | /*Verify B Session Valid Bit to verify vbus status*/ |
| 892 | writel(0x00080001, USB_USBCMD); |
| 893 | thread_sleep(100); |
| 894 | |
| 895 | /*Check reset value of suspend state bit*/ |
| 896 | if (!((1<<7) & readl(USB_PORTSC))) { |
| 897 | ret=1; |
| 898 | } |
| 899 | udc_stop(); |
| 900 | return ret; |
| 901 | } |
| 902 | |
Chandan Uddaraju | 7f5b901 | 2010-02-06 16:37:48 -0800 | [diff] [blame] | 903 | void usb_charger_change_state(void) |
| 904 | { |
| 905 | int usb_connected; |
| 906 | |
| 907 | //User might have switched from host pc to wall charger. So keep checking |
| 908 | //every time we are in the loop |
| 909 | |
| 910 | if(ENABLE_CHARGING == TRUE) |
| 911 | { |
| 912 | usb_connected = is_usb_cable_connected(); |
| 913 | |
| 914 | if(usb_connected && !charger_connected) |
| 915 | { |
| 916 | //mdelay(20); |
| 917 | thread_sleep(20); |
| 918 | /* go to RUN mode (D+ pullup enable) */ |
| 919 | writel(0x00080001, USB_USBCMD); |
| 920 | //mdelay(10); |
| 921 | thread_sleep(10); |
| 922 | usb_chg_detect_type(); |
| 923 | charger_connected = TRUE; |
| 924 | } |
| 925 | else if(!usb_connected && charger_connected) |
| 926 | { |
| 927 | /* disable D+ pull-up */ |
| 928 | writel(0x00080000, USB_USBCMD); |
| 929 | |
| 930 | /* Applicable only for 8k target */ |
| 931 | /*USB Spoof Disconnect Failure |
| 932 | Symptoms: |
| 933 | In USB peripheral mode, writing '0' to Run/Stop bit of the |
| 934 | USBCMD register doesn't cause USB disconnection (spoof disconnect). |
| 935 | The PC host doesn't detect the disconnection and the phone remains |
| 936 | active on Windows device manager. |
| 937 | |
| 938 | Suggested Workaround: |
| 939 | After writing '0' to Run/Stop bit of USBCMD, also write 0x48 to ULPI |
| 940 | "Function Control" register. This can be done via the ULPI VIEWPORT |
| 941 | register (offset 0x170) by writing a value of 0x60040048. |
| 942 | */ |
| 943 | ulpi_write(0x48, 0x04); |
| 944 | //usb_charger_reset(); |
| 945 | WALL_CHARGER = FALSE; |
| 946 | HOST_CHARGER = FALSE; |
| 947 | charger_usb_i(0); |
| 948 | charger_usb_disconnected(); |
| 949 | charger_connected = FALSE; |
| 950 | } |
| 951 | if(WALL_CHARGER == TRUE || HOST_CHARGER == TRUE){ |
| 952 | //battery_charging_image(); |
| 953 | } |
| 954 | } |
| 955 | else if ((readl(USB_USBCMD) & 0x01) == 0){ |
| 956 | writel(0x00080001, USB_USBCMD); |
| 957 | } |
| 958 | } |