Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1 | /* |
| 2 | * FOTG210 UDC Driver supports Bulk transfer so far |
| 3 | * |
| 4 | * Copyright (C) 2013 Faraday Technology Corporation |
| 5 | * |
| 6 | * Author : Yuan-Hsin Chen <yhchen@faraday-tech.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; version 2 of the License. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/dma-mapping.h> |
| 14 | #include <linux/err.h> |
| 15 | #include <linux/interrupt.h> |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/usb/ch9.h> |
| 20 | #include <linux/usb/gadget.h> |
| 21 | |
| 22 | #include "fotg210.h" |
| 23 | |
| 24 | #define DRIVER_DESC "FOTG210 USB Device Controller Driver" |
| 25 | #define DRIVER_VERSION "30-April-2013" |
| 26 | |
| 27 | static const char udc_name[] = "fotg210_udc"; |
| 28 | static const char * const fotg210_ep_name[] = { |
| 29 | "ep0", "ep1", "ep2", "ep3", "ep4"}; |
| 30 | |
| 31 | static void fotg210_disable_fifo_int(struct fotg210_ep *ep) |
| 32 | { |
| 33 | u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); |
| 34 | |
| 35 | if (ep->dir_in) |
| 36 | value |= DMISGR1_MF_IN_INT(ep->epnum - 1); |
| 37 | else |
| 38 | value |= DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); |
| 39 | iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); |
| 40 | } |
| 41 | |
| 42 | static void fotg210_enable_fifo_int(struct fotg210_ep *ep) |
| 43 | { |
| 44 | u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); |
| 45 | |
| 46 | if (ep->dir_in) |
| 47 | value &= ~DMISGR1_MF_IN_INT(ep->epnum - 1); |
| 48 | else |
| 49 | value &= ~DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); |
| 50 | iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); |
| 51 | } |
| 52 | |
| 53 | static void fotg210_set_cxdone(struct fotg210_udc *fotg210) |
| 54 | { |
| 55 | u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); |
| 56 | |
| 57 | value |= DCFESR_CX_DONE; |
| 58 | iowrite32(value, fotg210->reg + FOTG210_DCFESR); |
| 59 | } |
| 60 | |
| 61 | static void fotg210_done(struct fotg210_ep *ep, struct fotg210_request *req, |
| 62 | int status) |
| 63 | { |
| 64 | list_del_init(&req->queue); |
| 65 | |
| 66 | /* don't modify queue heads during completion callback */ |
| 67 | if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) |
| 68 | req->req.status = -ESHUTDOWN; |
| 69 | else |
| 70 | req->req.status = status; |
| 71 | |
| 72 | spin_unlock(&ep->fotg210->lock); |
Michal Sojka | 304f7e5 | 2014-09-24 22:43:19 +0200 | [diff] [blame] | 73 | usb_gadget_giveback_request(&ep->ep, &req->req); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 74 | spin_lock(&ep->fotg210->lock); |
| 75 | |
| 76 | if (ep->epnum) { |
| 77 | if (list_empty(&ep->queue)) |
| 78 | fotg210_disable_fifo_int(ep); |
| 79 | } else { |
| 80 | fotg210_set_cxdone(ep->fotg210); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | static void fotg210_fifo_ep_mapping(struct fotg210_ep *ep, u32 epnum, |
| 85 | u32 dir_in) |
| 86 | { |
| 87 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 88 | u32 val; |
| 89 | |
| 90 | /* Driver should map an ep to a fifo and then map the fifo |
| 91 | * to the ep. What a brain-damaged design! |
| 92 | */ |
| 93 | |
| 94 | /* map a fifo to an ep */ |
| 95 | val = ioread32(fotg210->reg + FOTG210_EPMAP); |
| 96 | val &= ~EPMAP_FIFONOMSK(epnum, dir_in); |
| 97 | val |= EPMAP_FIFONO(epnum, dir_in); |
| 98 | iowrite32(val, fotg210->reg + FOTG210_EPMAP); |
| 99 | |
| 100 | /* map the ep to the fifo */ |
| 101 | val = ioread32(fotg210->reg + FOTG210_FIFOMAP); |
| 102 | val &= ~FIFOMAP_EPNOMSK(epnum); |
| 103 | val |= FIFOMAP_EPNO(epnum); |
| 104 | iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); |
| 105 | |
| 106 | /* enable fifo */ |
| 107 | val = ioread32(fotg210->reg + FOTG210_FIFOCF); |
| 108 | val |= FIFOCF_FIFO_EN(epnum - 1); |
| 109 | iowrite32(val, fotg210->reg + FOTG210_FIFOCF); |
| 110 | } |
| 111 | |
| 112 | static void fotg210_set_fifo_dir(struct fotg210_ep *ep, u32 epnum, u32 dir_in) |
| 113 | { |
| 114 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 115 | u32 val; |
| 116 | |
| 117 | val = ioread32(fotg210->reg + FOTG210_FIFOMAP); |
| 118 | val |= (dir_in ? FIFOMAP_DIRIN(epnum - 1) : FIFOMAP_DIROUT(epnum - 1)); |
| 119 | iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); |
| 120 | } |
| 121 | |
| 122 | static void fotg210_set_tfrtype(struct fotg210_ep *ep, u32 epnum, u32 type) |
| 123 | { |
| 124 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 125 | u32 val; |
| 126 | |
| 127 | val = ioread32(fotg210->reg + FOTG210_FIFOCF); |
| 128 | val |= FIFOCF_TYPE(type, epnum - 1); |
| 129 | iowrite32(val, fotg210->reg + FOTG210_FIFOCF); |
| 130 | } |
| 131 | |
| 132 | static void fotg210_set_mps(struct fotg210_ep *ep, u32 epnum, u32 mps, |
| 133 | u32 dir_in) |
| 134 | { |
| 135 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 136 | u32 val; |
| 137 | u32 offset = dir_in ? FOTG210_INEPMPSR(epnum) : |
| 138 | FOTG210_OUTEPMPSR(epnum); |
| 139 | |
| 140 | val = ioread32(fotg210->reg + offset); |
| 141 | val |= INOUTEPMPSR_MPS(mps); |
| 142 | iowrite32(val, fotg210->reg + offset); |
| 143 | } |
| 144 | |
| 145 | static int fotg210_config_ep(struct fotg210_ep *ep, |
| 146 | const struct usb_endpoint_descriptor *desc) |
| 147 | { |
| 148 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 149 | |
| 150 | fotg210_set_fifo_dir(ep, ep->epnum, ep->dir_in); |
| 151 | fotg210_set_tfrtype(ep, ep->epnum, ep->type); |
| 152 | fotg210_set_mps(ep, ep->epnum, ep->ep.maxpacket, ep->dir_in); |
| 153 | fotg210_fifo_ep_mapping(ep, ep->epnum, ep->dir_in); |
| 154 | |
| 155 | fotg210->ep[ep->epnum] = ep; |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | static int fotg210_ep_enable(struct usb_ep *_ep, |
| 161 | const struct usb_endpoint_descriptor *desc) |
| 162 | { |
| 163 | struct fotg210_ep *ep; |
| 164 | |
| 165 | ep = container_of(_ep, struct fotg210_ep, ep); |
| 166 | |
| 167 | ep->desc = desc; |
| 168 | ep->epnum = usb_endpoint_num(desc); |
| 169 | ep->type = usb_endpoint_type(desc); |
| 170 | ep->dir_in = usb_endpoint_dir_in(desc); |
| 171 | ep->ep.maxpacket = usb_endpoint_maxp(desc); |
| 172 | |
| 173 | return fotg210_config_ep(ep, desc); |
| 174 | } |
| 175 | |
| 176 | static void fotg210_reset_tseq(struct fotg210_udc *fotg210, u8 epnum) |
| 177 | { |
| 178 | struct fotg210_ep *ep = fotg210->ep[epnum]; |
| 179 | u32 value; |
| 180 | void __iomem *reg; |
| 181 | |
| 182 | reg = (ep->dir_in) ? |
| 183 | fotg210->reg + FOTG210_INEPMPSR(epnum) : |
| 184 | fotg210->reg + FOTG210_OUTEPMPSR(epnum); |
| 185 | |
| 186 | /* Note: Driver needs to set and clear INOUTEPMPSR_RESET_TSEQ |
| 187 | * bit. Controller wouldn't clear this bit. WTF!!! |
| 188 | */ |
| 189 | |
| 190 | value = ioread32(reg); |
| 191 | value |= INOUTEPMPSR_RESET_TSEQ; |
| 192 | iowrite32(value, reg); |
| 193 | |
| 194 | value = ioread32(reg); |
| 195 | value &= ~INOUTEPMPSR_RESET_TSEQ; |
| 196 | iowrite32(value, reg); |
| 197 | } |
| 198 | |
| 199 | static int fotg210_ep_release(struct fotg210_ep *ep) |
| 200 | { |
| 201 | if (!ep->epnum) |
| 202 | return 0; |
| 203 | ep->epnum = 0; |
| 204 | ep->stall = 0; |
| 205 | ep->wedged = 0; |
| 206 | |
| 207 | fotg210_reset_tseq(ep->fotg210, ep->epnum); |
| 208 | |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | static int fotg210_ep_disable(struct usb_ep *_ep) |
| 213 | { |
| 214 | struct fotg210_ep *ep; |
| 215 | struct fotg210_request *req; |
| 216 | unsigned long flags; |
| 217 | |
| 218 | BUG_ON(!_ep); |
| 219 | |
| 220 | ep = container_of(_ep, struct fotg210_ep, ep); |
| 221 | |
| 222 | while (!list_empty(&ep->queue)) { |
| 223 | req = list_entry(ep->queue.next, |
| 224 | struct fotg210_request, queue); |
| 225 | spin_lock_irqsave(&ep->fotg210->lock, flags); |
| 226 | fotg210_done(ep, req, -ECONNRESET); |
| 227 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); |
| 228 | } |
| 229 | |
| 230 | return fotg210_ep_release(ep); |
| 231 | } |
| 232 | |
| 233 | static struct usb_request *fotg210_ep_alloc_request(struct usb_ep *_ep, |
| 234 | gfp_t gfp_flags) |
| 235 | { |
| 236 | struct fotg210_request *req; |
| 237 | |
| 238 | req = kzalloc(sizeof(struct fotg210_request), gfp_flags); |
| 239 | if (!req) |
| 240 | return NULL; |
| 241 | |
| 242 | INIT_LIST_HEAD(&req->queue); |
| 243 | |
| 244 | return &req->req; |
| 245 | } |
| 246 | |
| 247 | static void fotg210_ep_free_request(struct usb_ep *_ep, |
| 248 | struct usb_request *_req) |
| 249 | { |
| 250 | struct fotg210_request *req; |
| 251 | |
| 252 | req = container_of(_req, struct fotg210_request, req); |
| 253 | kfree(req); |
| 254 | } |
| 255 | |
| 256 | static void fotg210_enable_dma(struct fotg210_ep *ep, |
| 257 | dma_addr_t d, u32 len) |
| 258 | { |
| 259 | u32 value; |
| 260 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 261 | |
| 262 | /* set transfer length and direction */ |
| 263 | value = ioread32(fotg210->reg + FOTG210_DMACPSR1); |
| 264 | value &= ~(DMACPSR1_DMA_LEN(0xFFFF) | DMACPSR1_DMA_TYPE(1)); |
| 265 | value |= DMACPSR1_DMA_LEN(len) | DMACPSR1_DMA_TYPE(ep->dir_in); |
| 266 | iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); |
| 267 | |
| 268 | /* set device DMA target FIFO number */ |
| 269 | value = ioread32(fotg210->reg + FOTG210_DMATFNR); |
| 270 | if (ep->epnum) |
| 271 | value |= DMATFNR_ACC_FN(ep->epnum - 1); |
| 272 | else |
| 273 | value |= DMATFNR_ACC_CXF; |
| 274 | iowrite32(value, fotg210->reg + FOTG210_DMATFNR); |
| 275 | |
| 276 | /* set DMA memory address */ |
| 277 | iowrite32(d, fotg210->reg + FOTG210_DMACPSR2); |
| 278 | |
| 279 | /* enable MDMA_EROR and MDMA_CMPLT interrupt */ |
| 280 | value = ioread32(fotg210->reg + FOTG210_DMISGR2); |
| 281 | value &= ~(DMISGR2_MDMA_CMPLT | DMISGR2_MDMA_ERROR); |
| 282 | iowrite32(value, fotg210->reg + FOTG210_DMISGR2); |
| 283 | |
| 284 | /* start DMA */ |
| 285 | value = ioread32(fotg210->reg + FOTG210_DMACPSR1); |
| 286 | value |= DMACPSR1_DMA_START; |
| 287 | iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); |
| 288 | } |
| 289 | |
| 290 | static void fotg210_disable_dma(struct fotg210_ep *ep) |
| 291 | { |
| 292 | iowrite32(DMATFNR_DISDMA, ep->fotg210->reg + FOTG210_DMATFNR); |
| 293 | } |
| 294 | |
| 295 | static void fotg210_wait_dma_done(struct fotg210_ep *ep) |
| 296 | { |
| 297 | u32 value; |
| 298 | |
| 299 | do { |
| 300 | value = ioread32(ep->fotg210->reg + FOTG210_DISGR2); |
| 301 | if ((value & DISGR2_USBRST_INT) || |
| 302 | (value & DISGR2_DMA_ERROR)) |
| 303 | goto dma_reset; |
| 304 | } while (!(value & DISGR2_DMA_CMPLT)); |
| 305 | |
| 306 | value &= ~DISGR2_DMA_CMPLT; |
| 307 | iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2); |
| 308 | return; |
| 309 | |
| 310 | dma_reset: |
| 311 | value = ioread32(ep->fotg210->reg + FOTG210_DMACPSR1); |
| 312 | value |= DMACPSR1_DMA_ABORT; |
| 313 | iowrite32(value, ep->fotg210->reg + FOTG210_DMACPSR1); |
| 314 | |
| 315 | /* reset fifo */ |
| 316 | if (ep->epnum) { |
| 317 | value = ioread32(ep->fotg210->reg + |
| 318 | FOTG210_FIBCR(ep->epnum - 1)); |
| 319 | value |= FIBCR_FFRST; |
| 320 | iowrite32(value, ep->fotg210->reg + |
| 321 | FOTG210_FIBCR(ep->epnum - 1)); |
| 322 | } else { |
| 323 | value = ioread32(ep->fotg210->reg + FOTG210_DCFESR); |
| 324 | value |= DCFESR_CX_CLR; |
| 325 | iowrite32(value, ep->fotg210->reg + FOTG210_DCFESR); |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | static void fotg210_start_dma(struct fotg210_ep *ep, |
| 330 | struct fotg210_request *req) |
| 331 | { |
| 332 | dma_addr_t d; |
| 333 | u8 *buffer; |
| 334 | u32 length; |
| 335 | |
| 336 | if (ep->epnum) { |
| 337 | if (ep->dir_in) { |
| 338 | buffer = req->req.buf; |
| 339 | length = req->req.length; |
| 340 | } else { |
| 341 | buffer = req->req.buf + req->req.actual; |
| 342 | length = ioread32(ep->fotg210->reg + |
| 343 | FOTG210_FIBCR(ep->epnum - 1)); |
| 344 | length &= FIBCR_BCFX; |
| 345 | } |
| 346 | } else { |
| 347 | buffer = req->req.buf + req->req.actual; |
| 348 | if (req->req.length - req->req.actual > ep->ep.maxpacket) |
| 349 | length = ep->ep.maxpacket; |
| 350 | else |
| 351 | length = req->req.length; |
| 352 | } |
| 353 | |
| 354 | d = dma_map_single(NULL, buffer, length, |
| 355 | ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); |
| 356 | |
| 357 | if (dma_mapping_error(NULL, d)) { |
| 358 | pr_err("dma_mapping_error\n"); |
| 359 | return; |
| 360 | } |
| 361 | |
| 362 | dma_sync_single_for_device(NULL, d, length, |
| 363 | ep->dir_in ? DMA_TO_DEVICE : |
| 364 | DMA_FROM_DEVICE); |
| 365 | |
| 366 | fotg210_enable_dma(ep, d, length); |
| 367 | |
| 368 | /* check if dma is done */ |
| 369 | fotg210_wait_dma_done(ep); |
| 370 | |
| 371 | fotg210_disable_dma(ep); |
| 372 | |
| 373 | /* update actual transfer length */ |
| 374 | req->req.actual += length; |
| 375 | |
| 376 | dma_unmap_single(NULL, d, length, DMA_TO_DEVICE); |
| 377 | } |
| 378 | |
| 379 | static void fotg210_ep0_queue(struct fotg210_ep *ep, |
| 380 | struct fotg210_request *req) |
| 381 | { |
| 382 | if (!req->req.length) { |
| 383 | fotg210_done(ep, req, 0); |
| 384 | return; |
| 385 | } |
| 386 | if (ep->dir_in) { /* if IN */ |
Dan Carpenter | 1c99cab | 2015-07-30 00:29:23 +0300 | [diff] [blame] | 387 | fotg210_start_dma(ep, req); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 388 | if ((req->req.length == req->req.actual) || |
| 389 | (req->req.actual < ep->ep.maxpacket)) |
| 390 | fotg210_done(ep, req, 0); |
| 391 | } else { /* OUT */ |
Dan Carpenter | 1c99cab | 2015-07-30 00:29:23 +0300 | [diff] [blame] | 392 | u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR0); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 393 | |
Dan Carpenter | 1c99cab | 2015-07-30 00:29:23 +0300 | [diff] [blame] | 394 | value &= ~DMISGR0_MCX_OUT_INT; |
| 395 | iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR0); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 396 | } |
| 397 | } |
| 398 | |
| 399 | static int fotg210_ep_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 400 | gfp_t gfp_flags) |
| 401 | { |
| 402 | struct fotg210_ep *ep; |
| 403 | struct fotg210_request *req; |
| 404 | unsigned long flags; |
| 405 | int request = 0; |
| 406 | |
| 407 | ep = container_of(_ep, struct fotg210_ep, ep); |
| 408 | req = container_of(_req, struct fotg210_request, req); |
| 409 | |
| 410 | if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) |
| 411 | return -ESHUTDOWN; |
| 412 | |
| 413 | spin_lock_irqsave(&ep->fotg210->lock, flags); |
| 414 | |
| 415 | if (list_empty(&ep->queue)) |
| 416 | request = 1; |
| 417 | |
| 418 | list_add_tail(&req->queue, &ep->queue); |
| 419 | |
| 420 | req->req.actual = 0; |
| 421 | req->req.status = -EINPROGRESS; |
| 422 | |
| 423 | if (!ep->epnum) /* ep0 */ |
| 424 | fotg210_ep0_queue(ep, req); |
| 425 | else if (request && !ep->stall) |
| 426 | fotg210_enable_fifo_int(ep); |
| 427 | |
| 428 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); |
| 429 | |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | static int fotg210_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
| 434 | { |
| 435 | struct fotg210_ep *ep; |
| 436 | struct fotg210_request *req; |
| 437 | unsigned long flags; |
| 438 | |
| 439 | ep = container_of(_ep, struct fotg210_ep, ep); |
| 440 | req = container_of(_req, struct fotg210_request, req); |
| 441 | |
| 442 | spin_lock_irqsave(&ep->fotg210->lock, flags); |
| 443 | if (!list_empty(&ep->queue)) |
| 444 | fotg210_done(ep, req, -ECONNRESET); |
| 445 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); |
| 446 | |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | static void fotg210_set_epnstall(struct fotg210_ep *ep) |
| 451 | { |
| 452 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 453 | u32 value; |
| 454 | void __iomem *reg; |
| 455 | |
| 456 | /* check if IN FIFO is empty before stall */ |
| 457 | if (ep->dir_in) { |
| 458 | do { |
| 459 | value = ioread32(fotg210->reg + FOTG210_DCFESR); |
| 460 | } while (!(value & DCFESR_FIFO_EMPTY(ep->epnum - 1))); |
| 461 | } |
| 462 | |
| 463 | reg = (ep->dir_in) ? |
| 464 | fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : |
| 465 | fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); |
| 466 | value = ioread32(reg); |
| 467 | value |= INOUTEPMPSR_STL_EP; |
| 468 | iowrite32(value, reg); |
| 469 | } |
| 470 | |
| 471 | static void fotg210_clear_epnstall(struct fotg210_ep *ep) |
| 472 | { |
| 473 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 474 | u32 value; |
| 475 | void __iomem *reg; |
| 476 | |
| 477 | reg = (ep->dir_in) ? |
| 478 | fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : |
| 479 | fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); |
| 480 | value = ioread32(reg); |
| 481 | value &= ~INOUTEPMPSR_STL_EP; |
| 482 | iowrite32(value, reg); |
| 483 | } |
| 484 | |
| 485 | static int fotg210_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge) |
| 486 | { |
| 487 | struct fotg210_ep *ep; |
| 488 | struct fotg210_udc *fotg210; |
| 489 | unsigned long flags; |
| 490 | int ret = 0; |
| 491 | |
| 492 | ep = container_of(_ep, struct fotg210_ep, ep); |
| 493 | |
| 494 | fotg210 = ep->fotg210; |
| 495 | |
| 496 | spin_lock_irqsave(&ep->fotg210->lock, flags); |
| 497 | |
| 498 | if (value) { |
| 499 | fotg210_set_epnstall(ep); |
| 500 | ep->stall = 1; |
| 501 | if (wedge) |
| 502 | ep->wedged = 1; |
| 503 | } else { |
| 504 | fotg210_reset_tseq(fotg210, ep->epnum); |
| 505 | fotg210_clear_epnstall(ep); |
| 506 | ep->stall = 0; |
| 507 | ep->wedged = 0; |
| 508 | if (!list_empty(&ep->queue)) |
| 509 | fotg210_enable_fifo_int(ep); |
| 510 | } |
| 511 | |
| 512 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); |
| 513 | return ret; |
| 514 | } |
| 515 | |
| 516 | static int fotg210_ep_set_halt(struct usb_ep *_ep, int value) |
| 517 | { |
| 518 | return fotg210_set_halt_and_wedge(_ep, value, 0); |
| 519 | } |
| 520 | |
| 521 | static int fotg210_ep_set_wedge(struct usb_ep *_ep) |
| 522 | { |
| 523 | return fotg210_set_halt_and_wedge(_ep, 1, 1); |
| 524 | } |
| 525 | |
| 526 | static void fotg210_ep_fifo_flush(struct usb_ep *_ep) |
| 527 | { |
| 528 | } |
| 529 | |
| 530 | static struct usb_ep_ops fotg210_ep_ops = { |
| 531 | .enable = fotg210_ep_enable, |
| 532 | .disable = fotg210_ep_disable, |
| 533 | |
| 534 | .alloc_request = fotg210_ep_alloc_request, |
| 535 | .free_request = fotg210_ep_free_request, |
| 536 | |
| 537 | .queue = fotg210_ep_queue, |
| 538 | .dequeue = fotg210_ep_dequeue, |
| 539 | |
| 540 | .set_halt = fotg210_ep_set_halt, |
| 541 | .fifo_flush = fotg210_ep_fifo_flush, |
| 542 | .set_wedge = fotg210_ep_set_wedge, |
| 543 | }; |
| 544 | |
| 545 | static void fotg210_clear_tx0byte(struct fotg210_udc *fotg210) |
| 546 | { |
| 547 | u32 value = ioread32(fotg210->reg + FOTG210_TX0BYTE); |
| 548 | |
| 549 | value &= ~(TX0BYTE_EP1 | TX0BYTE_EP2 | TX0BYTE_EP3 |
| 550 | | TX0BYTE_EP4); |
| 551 | iowrite32(value, fotg210->reg + FOTG210_TX0BYTE); |
| 552 | } |
| 553 | |
| 554 | static void fotg210_clear_rx0byte(struct fotg210_udc *fotg210) |
| 555 | { |
| 556 | u32 value = ioread32(fotg210->reg + FOTG210_RX0BYTE); |
| 557 | |
| 558 | value &= ~(RX0BYTE_EP1 | RX0BYTE_EP2 | RX0BYTE_EP3 |
| 559 | | RX0BYTE_EP4); |
| 560 | iowrite32(value, fotg210->reg + FOTG210_RX0BYTE); |
| 561 | } |
| 562 | |
| 563 | /* read 8-byte setup packet only */ |
| 564 | static void fotg210_rdsetupp(struct fotg210_udc *fotg210, |
| 565 | u8 *buffer) |
| 566 | { |
| 567 | int i = 0; |
| 568 | u8 *tmp = buffer; |
| 569 | u32 data; |
| 570 | u32 length = 8; |
| 571 | |
| 572 | iowrite32(DMATFNR_ACC_CXF, fotg210->reg + FOTG210_DMATFNR); |
| 573 | |
| 574 | for (i = (length >> 2); i > 0; i--) { |
| 575 | data = ioread32(fotg210->reg + FOTG210_CXPORT); |
| 576 | *tmp = data & 0xFF; |
| 577 | *(tmp + 1) = (data >> 8) & 0xFF; |
| 578 | *(tmp + 2) = (data >> 16) & 0xFF; |
| 579 | *(tmp + 3) = (data >> 24) & 0xFF; |
| 580 | tmp = tmp + 4; |
| 581 | } |
| 582 | |
| 583 | switch (length % 4) { |
| 584 | case 1: |
| 585 | data = ioread32(fotg210->reg + FOTG210_CXPORT); |
| 586 | *tmp = data & 0xFF; |
| 587 | break; |
| 588 | case 2: |
| 589 | data = ioread32(fotg210->reg + FOTG210_CXPORT); |
| 590 | *tmp = data & 0xFF; |
| 591 | *(tmp + 1) = (data >> 8) & 0xFF; |
| 592 | break; |
| 593 | case 3: |
| 594 | data = ioread32(fotg210->reg + FOTG210_CXPORT); |
| 595 | *tmp = data & 0xFF; |
| 596 | *(tmp + 1) = (data >> 8) & 0xFF; |
| 597 | *(tmp + 2) = (data >> 16) & 0xFF; |
| 598 | break; |
| 599 | default: |
| 600 | break; |
| 601 | } |
| 602 | |
| 603 | iowrite32(DMATFNR_DISDMA, fotg210->reg + FOTG210_DMATFNR); |
| 604 | } |
| 605 | |
| 606 | static void fotg210_set_configuration(struct fotg210_udc *fotg210) |
| 607 | { |
| 608 | u32 value = ioread32(fotg210->reg + FOTG210_DAR); |
| 609 | |
| 610 | value |= DAR_AFT_CONF; |
| 611 | iowrite32(value, fotg210->reg + FOTG210_DAR); |
| 612 | } |
| 613 | |
| 614 | static void fotg210_set_dev_addr(struct fotg210_udc *fotg210, u32 addr) |
| 615 | { |
| 616 | u32 value = ioread32(fotg210->reg + FOTG210_DAR); |
| 617 | |
| 618 | value |= (addr & 0x7F); |
| 619 | iowrite32(value, fotg210->reg + FOTG210_DAR); |
| 620 | } |
| 621 | |
| 622 | static void fotg210_set_cxstall(struct fotg210_udc *fotg210) |
| 623 | { |
| 624 | u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); |
| 625 | |
| 626 | value |= DCFESR_CX_STL; |
| 627 | iowrite32(value, fotg210->reg + FOTG210_DCFESR); |
| 628 | } |
| 629 | |
| 630 | static void fotg210_request_error(struct fotg210_udc *fotg210) |
| 631 | { |
| 632 | fotg210_set_cxstall(fotg210); |
| 633 | pr_err("request error!!\n"); |
| 634 | } |
| 635 | |
| 636 | static void fotg210_set_address(struct fotg210_udc *fotg210, |
| 637 | struct usb_ctrlrequest *ctrl) |
| 638 | { |
| 639 | if (ctrl->wValue >= 0x0100) { |
| 640 | fotg210_request_error(fotg210); |
| 641 | } else { |
| 642 | fotg210_set_dev_addr(fotg210, ctrl->wValue); |
| 643 | fotg210_set_cxdone(fotg210); |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | static void fotg210_set_feature(struct fotg210_udc *fotg210, |
| 648 | struct usb_ctrlrequest *ctrl) |
| 649 | { |
| 650 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 651 | case USB_RECIP_DEVICE: |
| 652 | fotg210_set_cxdone(fotg210); |
| 653 | break; |
| 654 | case USB_RECIP_INTERFACE: |
| 655 | fotg210_set_cxdone(fotg210); |
| 656 | break; |
| 657 | case USB_RECIP_ENDPOINT: { |
| 658 | u8 epnum; |
| 659 | epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; |
| 660 | if (epnum) |
| 661 | fotg210_set_epnstall(fotg210->ep[epnum]); |
| 662 | else |
| 663 | fotg210_set_cxstall(fotg210); |
| 664 | fotg210_set_cxdone(fotg210); |
| 665 | } |
| 666 | break; |
| 667 | default: |
| 668 | fotg210_request_error(fotg210); |
| 669 | break; |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | static void fotg210_clear_feature(struct fotg210_udc *fotg210, |
| 674 | struct usb_ctrlrequest *ctrl) |
| 675 | { |
| 676 | struct fotg210_ep *ep = |
| 677 | fotg210->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK]; |
| 678 | |
| 679 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 680 | case USB_RECIP_DEVICE: |
| 681 | fotg210_set_cxdone(fotg210); |
| 682 | break; |
| 683 | case USB_RECIP_INTERFACE: |
| 684 | fotg210_set_cxdone(fotg210); |
| 685 | break; |
| 686 | case USB_RECIP_ENDPOINT: |
| 687 | if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) { |
| 688 | if (ep->wedged) { |
| 689 | fotg210_set_cxdone(fotg210); |
| 690 | break; |
| 691 | } |
| 692 | if (ep->stall) |
| 693 | fotg210_set_halt_and_wedge(&ep->ep, 0, 0); |
| 694 | } |
| 695 | fotg210_set_cxdone(fotg210); |
| 696 | break; |
| 697 | default: |
| 698 | fotg210_request_error(fotg210); |
| 699 | break; |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | static int fotg210_is_epnstall(struct fotg210_ep *ep) |
| 704 | { |
| 705 | struct fotg210_udc *fotg210 = ep->fotg210; |
| 706 | u32 value; |
| 707 | void __iomem *reg; |
| 708 | |
| 709 | reg = (ep->dir_in) ? |
| 710 | fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : |
| 711 | fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); |
| 712 | value = ioread32(reg); |
| 713 | return value & INOUTEPMPSR_STL_EP ? 1 : 0; |
| 714 | } |
| 715 | |
| 716 | static void fotg210_get_status(struct fotg210_udc *fotg210, |
| 717 | struct usb_ctrlrequest *ctrl) |
| 718 | { |
| 719 | u8 epnum; |
| 720 | |
| 721 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 722 | case USB_RECIP_DEVICE: |
| 723 | fotg210->ep0_data = 1 << USB_DEVICE_SELF_POWERED; |
| 724 | break; |
| 725 | case USB_RECIP_INTERFACE: |
| 726 | fotg210->ep0_data = 0; |
| 727 | break; |
| 728 | case USB_RECIP_ENDPOINT: |
| 729 | epnum = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK; |
| 730 | if (epnum) |
| 731 | fotg210->ep0_data = |
| 732 | fotg210_is_epnstall(fotg210->ep[epnum]) |
| 733 | << USB_ENDPOINT_HALT; |
| 734 | else |
| 735 | fotg210_request_error(fotg210); |
| 736 | break; |
| 737 | |
| 738 | default: |
| 739 | fotg210_request_error(fotg210); |
| 740 | return; /* exit */ |
| 741 | } |
| 742 | |
| 743 | fotg210->ep0_req->buf = &fotg210->ep0_data; |
| 744 | fotg210->ep0_req->length = 2; |
| 745 | |
| 746 | spin_unlock(&fotg210->lock); |
| 747 | fotg210_ep_queue(fotg210->gadget.ep0, fotg210->ep0_req, GFP_KERNEL); |
| 748 | spin_lock(&fotg210->lock); |
| 749 | } |
| 750 | |
| 751 | static int fotg210_setup_packet(struct fotg210_udc *fotg210, |
| 752 | struct usb_ctrlrequest *ctrl) |
| 753 | { |
| 754 | u8 *p = (u8 *)ctrl; |
| 755 | u8 ret = 0; |
| 756 | |
| 757 | fotg210_rdsetupp(fotg210, p); |
| 758 | |
| 759 | fotg210->ep[0]->dir_in = ctrl->bRequestType & USB_DIR_IN; |
| 760 | |
| 761 | if (fotg210->gadget.speed == USB_SPEED_UNKNOWN) { |
| 762 | u32 value = ioread32(fotg210->reg + FOTG210_DMCR); |
| 763 | fotg210->gadget.speed = value & DMCR_HS_EN ? |
| 764 | USB_SPEED_HIGH : USB_SPEED_FULL; |
| 765 | } |
| 766 | |
| 767 | /* check request */ |
| 768 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
| 769 | switch (ctrl->bRequest) { |
| 770 | case USB_REQ_GET_STATUS: |
| 771 | fotg210_get_status(fotg210, ctrl); |
| 772 | break; |
| 773 | case USB_REQ_CLEAR_FEATURE: |
| 774 | fotg210_clear_feature(fotg210, ctrl); |
| 775 | break; |
| 776 | case USB_REQ_SET_FEATURE: |
| 777 | fotg210_set_feature(fotg210, ctrl); |
| 778 | break; |
| 779 | case USB_REQ_SET_ADDRESS: |
| 780 | fotg210_set_address(fotg210, ctrl); |
| 781 | break; |
| 782 | case USB_REQ_SET_CONFIGURATION: |
| 783 | fotg210_set_configuration(fotg210); |
| 784 | ret = 1; |
| 785 | break; |
| 786 | default: |
| 787 | ret = 1; |
| 788 | break; |
| 789 | } |
| 790 | } else { |
| 791 | ret = 1; |
| 792 | } |
| 793 | |
| 794 | return ret; |
| 795 | } |
| 796 | |
| 797 | static void fotg210_ep0out(struct fotg210_udc *fotg210) |
| 798 | { |
| 799 | struct fotg210_ep *ep = fotg210->ep[0]; |
| 800 | |
| 801 | if (!list_empty(&ep->queue) && !ep->dir_in) { |
| 802 | struct fotg210_request *req; |
| 803 | |
| 804 | req = list_first_entry(&ep->queue, |
| 805 | struct fotg210_request, queue); |
| 806 | |
| 807 | if (req->req.length) |
| 808 | fotg210_start_dma(ep, req); |
| 809 | |
| 810 | if ((req->req.length - req->req.actual) < ep->ep.maxpacket) |
| 811 | fotg210_done(ep, req, 0); |
| 812 | } else { |
| 813 | pr_err("%s : empty queue\n", __func__); |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | static void fotg210_ep0in(struct fotg210_udc *fotg210) |
| 818 | { |
| 819 | struct fotg210_ep *ep = fotg210->ep[0]; |
| 820 | |
| 821 | if ((!list_empty(&ep->queue)) && (ep->dir_in)) { |
| 822 | struct fotg210_request *req; |
| 823 | |
| 824 | req = list_entry(ep->queue.next, |
| 825 | struct fotg210_request, queue); |
| 826 | |
| 827 | if (req->req.length) |
| 828 | fotg210_start_dma(ep, req); |
| 829 | |
| 830 | if ((req->req.length - req->req.actual) < ep->ep.maxpacket) |
| 831 | fotg210_done(ep, req, 0); |
| 832 | } else { |
| 833 | fotg210_set_cxdone(fotg210); |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210) |
| 838 | { |
| 839 | u32 value = ioread32(fotg210->reg + FOTG210_DISGR0); |
| 840 | |
| 841 | value &= ~DISGR0_CX_COMABT_INT; |
| 842 | iowrite32(value, fotg210->reg + FOTG210_DISGR0); |
| 843 | } |
| 844 | |
| 845 | static void fotg210_in_fifo_handler(struct fotg210_ep *ep) |
| 846 | { |
| 847 | struct fotg210_request *req = list_entry(ep->queue.next, |
| 848 | struct fotg210_request, queue); |
| 849 | |
| 850 | if (req->req.length) |
| 851 | fotg210_start_dma(ep, req); |
| 852 | fotg210_done(ep, req, 0); |
| 853 | } |
| 854 | |
| 855 | static void fotg210_out_fifo_handler(struct fotg210_ep *ep) |
| 856 | { |
| 857 | struct fotg210_request *req = list_entry(ep->queue.next, |
| 858 | struct fotg210_request, queue); |
| 859 | |
| 860 | fotg210_start_dma(ep, req); |
| 861 | |
| 862 | /* finish out transfer */ |
| 863 | if (req->req.length == req->req.actual || |
| 864 | req->req.actual < ep->ep.maxpacket) |
| 865 | fotg210_done(ep, req, 0); |
| 866 | } |
| 867 | |
| 868 | static irqreturn_t fotg210_irq(int irq, void *_fotg210) |
| 869 | { |
| 870 | struct fotg210_udc *fotg210 = _fotg210; |
| 871 | u32 int_grp = ioread32(fotg210->reg + FOTG210_DIGR); |
| 872 | u32 int_msk = ioread32(fotg210->reg + FOTG210_DMIGR); |
| 873 | |
| 874 | int_grp &= ~int_msk; |
| 875 | |
| 876 | spin_lock(&fotg210->lock); |
| 877 | |
| 878 | if (int_grp & DIGR_INT_G2) { |
| 879 | void __iomem *reg = fotg210->reg + FOTG210_DISGR2; |
| 880 | u32 int_grp2 = ioread32(reg); |
| 881 | u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2); |
| 882 | u32 value; |
| 883 | |
| 884 | int_grp2 &= ~int_msk2; |
| 885 | |
| 886 | if (int_grp2 & DISGR2_USBRST_INT) { |
| 887 | value = ioread32(reg); |
| 888 | value &= ~DISGR2_USBRST_INT; |
| 889 | iowrite32(value, reg); |
| 890 | pr_info("fotg210 udc reset\n"); |
| 891 | } |
| 892 | if (int_grp2 & DISGR2_SUSP_INT) { |
| 893 | value = ioread32(reg); |
| 894 | value &= ~DISGR2_SUSP_INT; |
| 895 | iowrite32(value, reg); |
| 896 | pr_info("fotg210 udc suspend\n"); |
| 897 | } |
| 898 | if (int_grp2 & DISGR2_RESM_INT) { |
| 899 | value = ioread32(reg); |
| 900 | value &= ~DISGR2_RESM_INT; |
| 901 | iowrite32(value, reg); |
| 902 | pr_info("fotg210 udc resume\n"); |
| 903 | } |
| 904 | if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) { |
| 905 | value = ioread32(reg); |
| 906 | value &= ~DISGR2_ISO_SEQ_ERR_INT; |
| 907 | iowrite32(value, reg); |
| 908 | pr_info("fotg210 iso sequence error\n"); |
| 909 | } |
| 910 | if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) { |
| 911 | value = ioread32(reg); |
| 912 | value &= ~DISGR2_ISO_SEQ_ABORT_INT; |
| 913 | iowrite32(value, reg); |
| 914 | pr_info("fotg210 iso sequence abort\n"); |
| 915 | } |
| 916 | if (int_grp2 & DISGR2_TX0BYTE_INT) { |
| 917 | fotg210_clear_tx0byte(fotg210); |
| 918 | value = ioread32(reg); |
| 919 | value &= ~DISGR2_TX0BYTE_INT; |
| 920 | iowrite32(value, reg); |
| 921 | pr_info("fotg210 transferred 0 byte\n"); |
| 922 | } |
| 923 | if (int_grp2 & DISGR2_RX0BYTE_INT) { |
| 924 | fotg210_clear_rx0byte(fotg210); |
| 925 | value = ioread32(reg); |
| 926 | value &= ~DISGR2_RX0BYTE_INT; |
| 927 | iowrite32(value, reg); |
| 928 | pr_info("fotg210 received 0 byte\n"); |
| 929 | } |
| 930 | if (int_grp2 & DISGR2_DMA_ERROR) { |
| 931 | value = ioread32(reg); |
| 932 | value &= ~DISGR2_DMA_ERROR; |
| 933 | iowrite32(value, reg); |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | if (int_grp & DIGR_INT_G0) { |
| 938 | void __iomem *reg = fotg210->reg + FOTG210_DISGR0; |
| 939 | u32 int_grp0 = ioread32(reg); |
| 940 | u32 int_msk0 = ioread32(fotg210->reg + FOTG210_DMISGR0); |
| 941 | struct usb_ctrlrequest ctrl; |
| 942 | |
| 943 | int_grp0 &= ~int_msk0; |
| 944 | |
| 945 | /* the highest priority in this source register */ |
| 946 | if (int_grp0 & DISGR0_CX_COMABT_INT) { |
| 947 | fotg210_clear_comabt_int(fotg210); |
| 948 | pr_info("fotg210 CX command abort\n"); |
| 949 | } |
| 950 | |
| 951 | if (int_grp0 & DISGR0_CX_SETUP_INT) { |
| 952 | if (fotg210_setup_packet(fotg210, &ctrl)) { |
| 953 | spin_unlock(&fotg210->lock); |
| 954 | if (fotg210->driver->setup(&fotg210->gadget, |
| 955 | &ctrl) < 0) |
| 956 | fotg210_set_cxstall(fotg210); |
| 957 | spin_lock(&fotg210->lock); |
| 958 | } |
| 959 | } |
| 960 | if (int_grp0 & DISGR0_CX_COMEND_INT) |
| 961 | pr_info("fotg210 cmd end\n"); |
| 962 | |
| 963 | if (int_grp0 & DISGR0_CX_IN_INT) |
| 964 | fotg210_ep0in(fotg210); |
| 965 | |
| 966 | if (int_grp0 & DISGR0_CX_OUT_INT) |
| 967 | fotg210_ep0out(fotg210); |
| 968 | |
| 969 | if (int_grp0 & DISGR0_CX_COMFAIL_INT) { |
| 970 | fotg210_set_cxstall(fotg210); |
| 971 | pr_info("fotg210 ep0 fail\n"); |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | if (int_grp & DIGR_INT_G1) { |
| 976 | void __iomem *reg = fotg210->reg + FOTG210_DISGR1; |
| 977 | u32 int_grp1 = ioread32(reg); |
| 978 | u32 int_msk1 = ioread32(fotg210->reg + FOTG210_DMISGR1); |
| 979 | int fifo; |
| 980 | |
| 981 | int_grp1 &= ~int_msk1; |
| 982 | |
| 983 | for (fifo = 0; fifo < FOTG210_MAX_FIFO_NUM; fifo++) { |
| 984 | if (int_grp1 & DISGR1_IN_INT(fifo)) |
| 985 | fotg210_in_fifo_handler(fotg210->ep[fifo + 1]); |
| 986 | |
| 987 | if ((int_grp1 & DISGR1_OUT_INT(fifo)) || |
| 988 | (int_grp1 & DISGR1_SPK_INT(fifo))) |
| 989 | fotg210_out_fifo_handler(fotg210->ep[fifo + 1]); |
| 990 | } |
| 991 | } |
| 992 | |
| 993 | spin_unlock(&fotg210->lock); |
| 994 | |
| 995 | return IRQ_HANDLED; |
| 996 | } |
| 997 | |
| 998 | static void fotg210_disable_unplug(struct fotg210_udc *fotg210) |
| 999 | { |
| 1000 | u32 reg = ioread32(fotg210->reg + FOTG210_PHYTMSR); |
| 1001 | |
| 1002 | reg &= ~PHYTMSR_UNPLUG; |
| 1003 | iowrite32(reg, fotg210->reg + FOTG210_PHYTMSR); |
| 1004 | } |
| 1005 | |
| 1006 | static int fotg210_udc_start(struct usb_gadget *g, |
| 1007 | struct usb_gadget_driver *driver) |
| 1008 | { |
| 1009 | struct fotg210_udc *fotg210 = gadget_to_fotg210(g); |
| 1010 | u32 value; |
| 1011 | |
| 1012 | /* hook up the driver */ |
| 1013 | driver->driver.bus = NULL; |
| 1014 | fotg210->driver = driver; |
| 1015 | |
| 1016 | /* enable device global interrupt */ |
| 1017 | value = ioread32(fotg210->reg + FOTG210_DMCR); |
| 1018 | value |= DMCR_GLINT_EN; |
| 1019 | iowrite32(value, fotg210->reg + FOTG210_DMCR); |
| 1020 | |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
| 1024 | static void fotg210_init(struct fotg210_udc *fotg210) |
| 1025 | { |
| 1026 | u32 value; |
| 1027 | |
| 1028 | /* disable global interrupt and set int polarity to active high */ |
| 1029 | iowrite32(GMIR_MHC_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY, |
| 1030 | fotg210->reg + FOTG210_GMIR); |
| 1031 | |
| 1032 | /* disable device global interrupt */ |
| 1033 | value = ioread32(fotg210->reg + FOTG210_DMCR); |
| 1034 | value &= ~DMCR_GLINT_EN; |
| 1035 | iowrite32(value, fotg210->reg + FOTG210_DMCR); |
| 1036 | |
| 1037 | /* disable all fifo interrupt */ |
| 1038 | iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1); |
| 1039 | |
| 1040 | /* disable cmd end */ |
| 1041 | value = ioread32(fotg210->reg + FOTG210_DMISGR0); |
| 1042 | value |= DMISGR0_MCX_COMEND; |
| 1043 | iowrite32(value, fotg210->reg + FOTG210_DMISGR0); |
| 1044 | } |
| 1045 | |
Felipe Balbi | 22835b8 | 2014-10-17 12:05:12 -0500 | [diff] [blame] | 1046 | static int fotg210_udc_stop(struct usb_gadget *g) |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1047 | { |
| 1048 | struct fotg210_udc *fotg210 = gadget_to_fotg210(g); |
| 1049 | unsigned long flags; |
| 1050 | |
| 1051 | spin_lock_irqsave(&fotg210->lock, flags); |
| 1052 | |
| 1053 | fotg210_init(fotg210); |
| 1054 | fotg210->driver = NULL; |
| 1055 | |
| 1056 | spin_unlock_irqrestore(&fotg210->lock, flags); |
| 1057 | |
| 1058 | return 0; |
| 1059 | } |
| 1060 | |
| 1061 | static struct usb_gadget_ops fotg210_gadget_ops = { |
| 1062 | .udc_start = fotg210_udc_start, |
| 1063 | .udc_stop = fotg210_udc_stop, |
| 1064 | }; |
| 1065 | |
Yuan-Hsin Chen | 88ae742 | 2013-06-21 14:50:47 +0000 | [diff] [blame] | 1066 | static int fotg210_udc_remove(struct platform_device *pdev) |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1067 | { |
Libo Chen | 3cb40a5 | 2013-08-27 16:10:17 +0800 | [diff] [blame] | 1068 | struct fotg210_udc *fotg210 = platform_get_drvdata(pdev); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1069 | |
| 1070 | usb_del_gadget_udc(&fotg210->gadget); |
| 1071 | iounmap(fotg210->reg); |
| 1072 | free_irq(platform_get_irq(pdev, 0), fotg210); |
| 1073 | |
| 1074 | fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); |
| 1075 | kfree(fotg210); |
| 1076 | |
| 1077 | return 0; |
| 1078 | } |
| 1079 | |
Yuan-Hsin Chen | 88ae742 | 2013-06-21 14:50:47 +0000 | [diff] [blame] | 1080 | static int fotg210_udc_probe(struct platform_device *pdev) |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1081 | { |
| 1082 | struct resource *res, *ires; |
| 1083 | struct fotg210_udc *fotg210 = NULL; |
| 1084 | struct fotg210_ep *_ep[FOTG210_MAX_NUM_EP]; |
| 1085 | int ret = 0; |
| 1086 | int i; |
| 1087 | |
| 1088 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1089 | if (!res) { |
| 1090 | pr_err("platform_get_resource error.\n"); |
| 1091 | return -ENODEV; |
| 1092 | } |
| 1093 | |
| 1094 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 1095 | if (!ires) { |
| 1096 | pr_err("platform_get_resource IORESOURCE_IRQ error.\n"); |
| 1097 | return -ENODEV; |
| 1098 | } |
| 1099 | |
| 1100 | ret = -ENOMEM; |
| 1101 | |
| 1102 | /* initialize udc */ |
| 1103 | fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL); |
Jingoo Han | 0351c32 | 2014-05-07 15:42:21 +0900 | [diff] [blame] | 1104 | if (fotg210 == NULL) |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1105 | goto err_alloc; |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1106 | |
| 1107 | for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { |
| 1108 | _ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL); |
Jingoo Han | 0351c32 | 2014-05-07 15:42:21 +0900 | [diff] [blame] | 1109 | if (_ep[i] == NULL) |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1110 | goto err_alloc; |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1111 | fotg210->ep[i] = _ep[i]; |
| 1112 | } |
| 1113 | |
| 1114 | fotg210->reg = ioremap(res->start, resource_size(res)); |
| 1115 | if (fotg210->reg == NULL) { |
| 1116 | pr_err("ioremap error.\n"); |
| 1117 | goto err_map; |
| 1118 | } |
| 1119 | |
| 1120 | spin_lock_init(&fotg210->lock); |
| 1121 | |
Libo Chen | 3cb40a5 | 2013-08-27 16:10:17 +0800 | [diff] [blame] | 1122 | platform_set_drvdata(pdev, fotg210); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1123 | |
| 1124 | fotg210->gadget.ops = &fotg210_gadget_ops; |
| 1125 | |
| 1126 | fotg210->gadget.max_speed = USB_SPEED_HIGH; |
| 1127 | fotg210->gadget.dev.parent = &pdev->dev; |
| 1128 | fotg210->gadget.dev.dma_mask = pdev->dev.dma_mask; |
| 1129 | fotg210->gadget.name = udc_name; |
| 1130 | |
| 1131 | INIT_LIST_HEAD(&fotg210->gadget.ep_list); |
| 1132 | |
| 1133 | for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { |
| 1134 | struct fotg210_ep *ep = fotg210->ep[i]; |
| 1135 | |
| 1136 | if (i) { |
| 1137 | INIT_LIST_HEAD(&fotg210->ep[i]->ep.ep_list); |
| 1138 | list_add_tail(&fotg210->ep[i]->ep.ep_list, |
| 1139 | &fotg210->gadget.ep_list); |
| 1140 | } |
| 1141 | ep->fotg210 = fotg210; |
| 1142 | INIT_LIST_HEAD(&ep->queue); |
| 1143 | ep->ep.name = fotg210_ep_name[i]; |
| 1144 | ep->ep.ops = &fotg210_ep_ops; |
Robert Baldyga | e117e74 | 2013-12-13 12:23:38 +0100 | [diff] [blame] | 1145 | usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); |
Robert Baldyga | 8d29237 | 2015-07-31 16:00:25 +0200 | [diff] [blame^] | 1146 | |
| 1147 | if (i == 0) { |
| 1148 | ep->ep.caps.type_control = true; |
| 1149 | } else { |
| 1150 | ep->ep.caps.type_iso = true; |
| 1151 | ep->ep.caps.type_bulk = true; |
| 1152 | ep->ep.caps.type_int = true; |
| 1153 | } |
| 1154 | |
| 1155 | ep->ep.caps.dir_in = true; |
| 1156 | ep->ep.caps.dir_out = true; |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1157 | } |
Robert Baldyga | e117e74 | 2013-12-13 12:23:38 +0100 | [diff] [blame] | 1158 | usb_ep_set_maxpacket_limit(&fotg210->ep[0]->ep, 0x40); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1159 | fotg210->gadget.ep0 = &fotg210->ep[0]->ep; |
| 1160 | INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list); |
| 1161 | |
| 1162 | fotg210->ep0_req = fotg210_ep_alloc_request(&fotg210->ep[0]->ep, |
| 1163 | GFP_KERNEL); |
| 1164 | if (fotg210->ep0_req == NULL) |
| 1165 | goto err_req; |
| 1166 | |
| 1167 | fotg210_init(fotg210); |
| 1168 | |
| 1169 | fotg210_disable_unplug(fotg210); |
| 1170 | |
| 1171 | ret = request_irq(ires->start, fotg210_irq, IRQF_SHARED, |
| 1172 | udc_name, fotg210); |
| 1173 | if (ret < 0) { |
| 1174 | pr_err("request_irq error (%d)\n", ret); |
Takeshi Yoshimura | 2184fe6 | 2015-06-14 16:09:23 +0900 | [diff] [blame] | 1175 | goto err_req; |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
| 1178 | ret = usb_add_gadget_udc(&pdev->dev, &fotg210->gadget); |
| 1179 | if (ret) |
| 1180 | goto err_add_udc; |
| 1181 | |
| 1182 | dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); |
| 1183 | |
| 1184 | return 0; |
| 1185 | |
| 1186 | err_add_udc: |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1187 | free_irq(ires->start, fotg210); |
| 1188 | |
| 1189 | err_req: |
| 1190 | fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); |
| 1191 | |
| 1192 | err_map: |
| 1193 | if (fotg210->reg) |
| 1194 | iounmap(fotg210->reg); |
| 1195 | |
| 1196 | err_alloc: |
| 1197 | kfree(fotg210); |
| 1198 | |
| 1199 | return ret; |
| 1200 | } |
| 1201 | |
| 1202 | static struct platform_driver fotg210_driver = { |
| 1203 | .driver = { |
| 1204 | .name = (char *)udc_name, |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1205 | }, |
| 1206 | .probe = fotg210_udc_probe, |
| 1207 | .remove = fotg210_udc_remove, |
| 1208 | }; |
| 1209 | |
| 1210 | module_platform_driver(fotg210_driver); |
| 1211 | |
Dave Jones | dfe2902 | 2013-09-03 17:46:26 -0400 | [diff] [blame] | 1212 | MODULE_AUTHOR("Yuan-Hsin Chen, Feng-Hsin Chiang <john453@faraday-tech.com>"); |
Yuan-Hsin Chen | b84a8de | 2013-05-30 15:41:01 +0000 | [diff] [blame] | 1213 | MODULE_LICENSE("GPL"); |
| 1214 | MODULE_DESCRIPTION(DRIVER_DESC); |