Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1 | /* |
| 2 | * ISP116x HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * Derived from the SL811 HCD, rewritten for ISP116x. |
| 5 | * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> |
| 6 | * |
| 7 | * Portions: |
| 8 | * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) |
| 9 | * Copyright (C) 2004 David Brownell |
| 10 | * |
| 11 | * Periodic scheduling is based on Roman's OHCI code |
| 12 | * Copyright (C) 1999 Roman Weissgaerber |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | /* |
| 17 | * The driver basically works. A number of people have used it with a range |
| 18 | * of devices. |
| 19 | * |
Olav Kongas | 17f8bb7 | 2005-06-23 20:12:24 +0300 | [diff] [blame] | 20 | * The driver passes all usbtests 1-14. |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 21 | * |
| 22 | * Suspending/resuming of root hub via sysfs works. Remote wakeup works too. |
| 23 | * And suspending/resuming of platform device works too. Suspend/resume |
| 24 | * via HCD operations vector is not implemented. |
| 25 | * |
| 26 | * Iso transfer support is not implemented. Adding this would include |
| 27 | * implementing recovery from the failure to service the processed ITL |
| 28 | * fifo ram in time, which will involve chip reset. |
| 29 | * |
| 30 | * TODO: |
| 31 | + More testing of suspend/resume. |
| 32 | */ |
| 33 | |
| 34 | /* |
| 35 | ISP116x chips require certain delays between accesses to its |
| 36 | registers. The following timing options exist. |
| 37 | |
| 38 | 1. Configure your memory controller (the best) |
| 39 | 2. Implement platform-specific delay function possibly |
| 40 | combined with configuring the memory controller; see |
| 41 | include/linux/usb-isp116x.h for more info. Some broken |
| 42 | memory controllers line LH7A400 SMC need this. Also, |
| 43 | uncomment for that to work the following |
| 44 | USE_PLATFORM_DELAY macro. |
| 45 | 3. Use ndelay (easiest, poorest). For that, uncomment |
| 46 | the following USE_NDELAY macro. |
| 47 | */ |
| 48 | #define USE_PLATFORM_DELAY |
| 49 | //#define USE_NDELAY |
| 50 | |
| 51 | //#define DEBUG |
| 52 | //#define VERBOSE |
| 53 | /* Transfer descriptors. See dump_ptd() for printout format */ |
| 54 | //#define PTD_TRACE |
| 55 | /* enqueuing/finishing log of urbs */ |
| 56 | //#define URB_TRACE |
| 57 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 58 | #include <linux/module.h> |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 59 | #include <linux/delay.h> |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 60 | #include <linux/debugfs.h> |
| 61 | #include <linux/seq_file.h> |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 62 | #include <linux/errno.h> |
| 63 | #include <linux/init.h> |
| 64 | #include <linux/list.h> |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 65 | #include <linux/usb.h> |
David Brownell | 325a4af | 2006-06-13 09:59:32 -0700 | [diff] [blame] | 66 | #include <linux/usb/isp116x.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 67 | #include <linux/platform_device.h> |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 68 | |
| 69 | #include <asm/io.h> |
| 70 | #include <asm/irq.h> |
| 71 | #include <asm/system.h> |
| 72 | #include <asm/byteorder.h> |
| 73 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 74 | #include "../core/hcd.h" |
| 75 | #include "isp116x.h" |
| 76 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 77 | #define DRIVER_VERSION "03 Nov 2005" |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 78 | #define DRIVER_DESC "ISP116x USB Host Controller Driver" |
| 79 | |
| 80 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 81 | MODULE_LICENSE("GPL"); |
| 82 | |
| 83 | static const char hcd_name[] = "isp116x-hcd"; |
| 84 | |
| 85 | /*-----------------------------------------------------------------*/ |
| 86 | |
| 87 | /* |
| 88 | Write len bytes to fifo, pad till 32-bit boundary |
| 89 | */ |
| 90 | static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) |
| 91 | { |
| 92 | u8 *dp = (u8 *) buf; |
| 93 | u16 *dp2 = (u16 *) buf; |
| 94 | u16 w; |
| 95 | int quot = len % 4; |
| 96 | |
| 97 | if ((unsigned long)dp2 & 1) { |
| 98 | /* not aligned */ |
| 99 | for (; len > 1; len -= 2) { |
| 100 | w = *dp++; |
| 101 | w |= *dp++ << 8; |
| 102 | isp116x_raw_write_data16(isp116x, w); |
| 103 | } |
| 104 | if (len) |
| 105 | isp116x_write_data16(isp116x, (u16) * dp); |
| 106 | } else { |
| 107 | /* aligned */ |
| 108 | for (; len > 1; len -= 2) |
| 109 | isp116x_raw_write_data16(isp116x, *dp2++); |
| 110 | if (len) |
| 111 | isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2)); |
| 112 | } |
| 113 | if (quot == 1 || quot == 2) |
| 114 | isp116x_raw_write_data16(isp116x, 0); |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | Read len bytes from fifo and then read till 32-bit boundary. |
| 119 | */ |
| 120 | static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) |
| 121 | { |
| 122 | u8 *dp = (u8 *) buf; |
| 123 | u16 *dp2 = (u16 *) buf; |
| 124 | u16 w; |
| 125 | int quot = len % 4; |
| 126 | |
| 127 | if ((unsigned long)dp2 & 1) { |
| 128 | /* not aligned */ |
| 129 | for (; len > 1; len -= 2) { |
| 130 | w = isp116x_raw_read_data16(isp116x); |
| 131 | *dp++ = w & 0xff; |
| 132 | *dp++ = (w >> 8) & 0xff; |
| 133 | } |
| 134 | if (len) |
| 135 | *dp = 0xff & isp116x_read_data16(isp116x); |
| 136 | } else { |
| 137 | /* aligned */ |
| 138 | for (; len > 1; len -= 2) |
| 139 | *dp2++ = isp116x_raw_read_data16(isp116x); |
| 140 | if (len) |
| 141 | *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x); |
| 142 | } |
| 143 | if (quot == 1 || quot == 2) |
| 144 | isp116x_raw_read_data16(isp116x); |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | Write ptd's and data for scheduled transfers into |
| 149 | the fifo ram. Fifo must be empty and ready. |
| 150 | */ |
| 151 | static void pack_fifo(struct isp116x *isp116x) |
| 152 | { |
| 153 | struct isp116x_ep *ep; |
| 154 | struct ptd *ptd; |
| 155 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN |
| 156 | ? isp116x->atl_bufshrt : isp116x->atl_buflen; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 157 | |
| 158 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); |
| 159 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); |
| 160 | isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET); |
| 161 | for (ep = isp116x->atl_active; ep; ep = ep->active) { |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 162 | ptd = &ep->ptd; |
| 163 | dump_ptd(ptd); |
| 164 | dump_ptd_out_data(ptd, ep->data); |
| 165 | isp116x_write_data16(isp116x, ptd->count); |
| 166 | isp116x_write_data16(isp116x, ptd->mps); |
| 167 | isp116x_write_data16(isp116x, ptd->len); |
| 168 | isp116x_write_data16(isp116x, ptd->faddr); |
| 169 | buflen -= sizeof(struct ptd); |
| 170 | /* Skip writing data for last IN PTD */ |
| 171 | if (ep->active || (isp116x->atl_last_dir != PTD_DIR_IN)) { |
| 172 | write_ptddata_to_fifo(isp116x, ep->data, ep->length); |
| 173 | buflen -= ALIGN(ep->length, 4); |
| 174 | } |
| 175 | } |
| 176 | BUG_ON(buflen); |
| 177 | } |
| 178 | |
| 179 | /* |
| 180 | Read the processed ptd's and data from fifo ram back to |
| 181 | URBs' buffers. Fifo must be full and done |
| 182 | */ |
| 183 | static void unpack_fifo(struct isp116x *isp116x) |
| 184 | { |
| 185 | struct isp116x_ep *ep; |
| 186 | struct ptd *ptd; |
| 187 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN |
| 188 | ? isp116x->atl_buflen : isp116x->atl_bufshrt; |
| 189 | |
| 190 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); |
| 191 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); |
| 192 | isp116x_write_addr(isp116x, HCATLPORT); |
| 193 | for (ep = isp116x->atl_active; ep; ep = ep->active) { |
| 194 | ptd = &ep->ptd; |
| 195 | ptd->count = isp116x_read_data16(isp116x); |
| 196 | ptd->mps = isp116x_read_data16(isp116x); |
| 197 | ptd->len = isp116x_read_data16(isp116x); |
| 198 | ptd->faddr = isp116x_read_data16(isp116x); |
| 199 | buflen -= sizeof(struct ptd); |
| 200 | /* Skip reading data for last Setup or Out PTD */ |
| 201 | if (ep->active || (isp116x->atl_last_dir == PTD_DIR_IN)) { |
| 202 | read_ptddata_from_fifo(isp116x, ep->data, ep->length); |
| 203 | buflen -= ALIGN(ep->length, 4); |
| 204 | } |
| 205 | dump_ptd(ptd); |
| 206 | dump_ptd_in_data(ptd, ep->data); |
| 207 | } |
| 208 | BUG_ON(buflen); |
| 209 | } |
| 210 | |
| 211 | /*---------------------------------------------------------------*/ |
| 212 | |
| 213 | /* |
| 214 | Set up PTD's. |
| 215 | */ |
| 216 | static void preproc_atl_queue(struct isp116x *isp116x) |
| 217 | { |
| 218 | struct isp116x_ep *ep; |
| 219 | struct urb *urb; |
| 220 | struct ptd *ptd; |
Olav Kongas | f10eff2 | 2005-08-04 18:06:47 -0700 | [diff] [blame] | 221 | u16 len; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 222 | |
| 223 | for (ep = isp116x->atl_active; ep; ep = ep->active) { |
Olav Kongas | f10eff2 | 2005-08-04 18:06:47 -0700 | [diff] [blame] | 224 | u16 toggle = 0, dir = PTD_DIR_SETUP; |
| 225 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 226 | BUG_ON(list_empty(&ep->hep->urb_list)); |
| 227 | urb = container_of(ep->hep->urb_list.next, |
| 228 | struct urb, urb_list); |
| 229 | ptd = &ep->ptd; |
| 230 | len = ep->length; |
| 231 | spin_lock(&urb->lock); |
| 232 | ep->data = (unsigned char *)urb->transfer_buffer |
| 233 | + urb->actual_length; |
| 234 | |
| 235 | switch (ep->nextpid) { |
| 236 | case USB_PID_IN: |
| 237 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); |
| 238 | dir = PTD_DIR_IN; |
| 239 | break; |
| 240 | case USB_PID_OUT: |
| 241 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); |
| 242 | dir = PTD_DIR_OUT; |
| 243 | break; |
| 244 | case USB_PID_SETUP: |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 245 | len = sizeof(struct usb_ctrlrequest); |
| 246 | ep->data = urb->setup_packet; |
| 247 | break; |
| 248 | case USB_PID_ACK: |
| 249 | toggle = 1; |
| 250 | len = 0; |
| 251 | dir = (urb->transfer_buffer_length |
| 252 | && usb_pipein(urb->pipe)) |
| 253 | ? PTD_DIR_OUT : PTD_DIR_IN; |
| 254 | break; |
| 255 | default: |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 256 | ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__, |
| 257 | ep->nextpid); |
Olav Kongas | 17f8bb7 | 2005-06-23 20:12:24 +0300 | [diff] [blame] | 258 | BUG(); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); |
| 262 | ptd->mps = PTD_MPS(ep->maxpacket) |
| 263 | | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) |
| 264 | | PTD_EP(ep->epnum); |
| 265 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); |
| 266 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); |
| 267 | spin_unlock(&urb->lock); |
| 268 | if (!ep->active) { |
| 269 | ptd->mps |= PTD_LAST_MSK; |
| 270 | isp116x->atl_last_dir = dir; |
| 271 | } |
| 272 | isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen; |
| 273 | isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /* |
| 278 | Analyze transfer results, handle partial transfers and errors |
| 279 | */ |
| 280 | static void postproc_atl_queue(struct isp116x *isp116x) |
| 281 | { |
| 282 | struct isp116x_ep *ep; |
| 283 | struct urb *urb; |
| 284 | struct usb_device *udev; |
| 285 | struct ptd *ptd; |
| 286 | int short_not_ok; |
| 287 | u8 cc; |
| 288 | |
| 289 | for (ep = isp116x->atl_active; ep; ep = ep->active) { |
| 290 | BUG_ON(list_empty(&ep->hep->urb_list)); |
| 291 | urb = |
| 292 | container_of(ep->hep->urb_list.next, struct urb, urb_list); |
| 293 | udev = urb->dev; |
| 294 | ptd = &ep->ptd; |
| 295 | cc = PTD_GET_CC(ptd); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 296 | short_not_ok = 1; |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 297 | spin_lock(&urb->lock); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 298 | |
| 299 | /* Data underrun is special. For allowed underrun |
| 300 | we clear the error and continue as normal. For |
| 301 | forbidden underrun we finish the DATA stage |
| 302 | immediately while for control transfer, |
| 303 | we do a STATUS stage. */ |
| 304 | if (cc == TD_DATAUNDERRUN) { |
| 305 | if (!(urb->transfer_flags & URB_SHORT_NOT_OK)) { |
| 306 | DBG("Allowed data underrun\n"); |
| 307 | cc = TD_CC_NOERROR; |
| 308 | short_not_ok = 0; |
| 309 | } else { |
| 310 | ep->error_count = 1; |
| 311 | if (usb_pipecontrol(urb->pipe)) |
| 312 | ep->nextpid = USB_PID_ACK; |
| 313 | else |
| 314 | usb_settoggle(udev, ep->epnum, |
| 315 | ep->nextpid == |
| 316 | USB_PID_OUT, |
Olav Kongas | e9b765d | 2005-10-17 14:30:43 -0700 | [diff] [blame] | 317 | PTD_GET_TOGGLE(ptd)); |
| 318 | urb->actual_length += PTD_GET_COUNT(ptd); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 319 | urb->status = cc_to_error[TD_DATAUNDERRUN]; |
| 320 | spin_unlock(&urb->lock); |
| 321 | continue; |
| 322 | } |
| 323 | } |
| 324 | /* Keep underrun error through the STATUS stage */ |
| 325 | if (urb->status == cc_to_error[TD_DATAUNDERRUN]) |
| 326 | cc = TD_DATAUNDERRUN; |
| 327 | |
| 328 | if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED |
| 329 | && (++ep->error_count >= 3 || cc == TD_CC_STALL |
| 330 | || cc == TD_DATAOVERRUN)) { |
| 331 | if (urb->status == -EINPROGRESS) |
| 332 | urb->status = cc_to_error[cc]; |
| 333 | if (ep->nextpid == USB_PID_ACK) |
| 334 | ep->nextpid = 0; |
| 335 | spin_unlock(&urb->lock); |
| 336 | continue; |
| 337 | } |
| 338 | /* According to usb spec, zero-length Int transfer signals |
| 339 | finishing of the urb. Hey, does this apply only |
| 340 | for IN endpoints? */ |
| 341 | if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) { |
| 342 | if (urb->status == -EINPROGRESS) |
| 343 | urb->status = 0; |
| 344 | spin_unlock(&urb->lock); |
| 345 | continue; |
| 346 | } |
| 347 | |
| 348 | /* Relax after previously failed, but later succeeded |
| 349 | or correctly NAK'ed retransmission attempt */ |
| 350 | if (ep->error_count |
| 351 | && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED)) |
| 352 | ep->error_count = 0; |
| 353 | |
| 354 | /* Take into account idiosyncracies of the isp116x chip |
| 355 | regarding toggle bit for failed transfers */ |
| 356 | if (ep->nextpid == USB_PID_OUT) |
| 357 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd) |
| 358 | ^ (ep->error_count > 0)); |
| 359 | else if (ep->nextpid == USB_PID_IN) |
| 360 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd) |
| 361 | ^ (ep->error_count > 0)); |
| 362 | |
| 363 | switch (ep->nextpid) { |
| 364 | case USB_PID_IN: |
| 365 | case USB_PID_OUT: |
| 366 | urb->actual_length += PTD_GET_COUNT(ptd); |
| 367 | if (PTD_GET_ACTIVE(ptd) |
| 368 | || (cc != TD_CC_NOERROR && cc < 0x0E)) |
| 369 | break; |
| 370 | if (urb->transfer_buffer_length != urb->actual_length) { |
| 371 | if (short_not_ok) |
| 372 | break; |
| 373 | } else { |
| 374 | if (urb->transfer_flags & URB_ZERO_PACKET |
| 375 | && ep->nextpid == USB_PID_OUT |
| 376 | && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) { |
| 377 | DBG("Zero packet requested\n"); |
| 378 | break; |
| 379 | } |
| 380 | } |
| 381 | /* All data for this URB is transferred, let's finish */ |
| 382 | if (usb_pipecontrol(urb->pipe)) |
| 383 | ep->nextpid = USB_PID_ACK; |
| 384 | else if (urb->status == -EINPROGRESS) |
| 385 | urb->status = 0; |
| 386 | break; |
| 387 | case USB_PID_SETUP: |
| 388 | if (PTD_GET_ACTIVE(ptd) |
| 389 | || (cc != TD_CC_NOERROR && cc < 0x0E)) |
| 390 | break; |
| 391 | if (urb->transfer_buffer_length == urb->actual_length) |
| 392 | ep->nextpid = USB_PID_ACK; |
| 393 | else if (usb_pipeout(urb->pipe)) { |
| 394 | usb_settoggle(udev, 0, 1, 1); |
| 395 | ep->nextpid = USB_PID_OUT; |
| 396 | } else { |
| 397 | usb_settoggle(udev, 0, 0, 1); |
| 398 | ep->nextpid = USB_PID_IN; |
| 399 | } |
| 400 | break; |
| 401 | case USB_PID_ACK: |
| 402 | if (PTD_GET_ACTIVE(ptd) |
| 403 | || (cc != TD_CC_NOERROR && cc < 0x0E)) |
| 404 | break; |
| 405 | if (urb->status == -EINPROGRESS) |
| 406 | urb->status = 0; |
| 407 | ep->nextpid = 0; |
| 408 | break; |
| 409 | default: |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 410 | BUG(); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 411 | } |
| 412 | spin_unlock(&urb->lock); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /* |
| 417 | Take done or failed requests out of schedule. Give back |
| 418 | processed urbs. |
| 419 | */ |
| 420 | static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep, |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 421 | struct urb *urb) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 422 | __releases(isp116x->lock) __acquires(isp116x->lock) |
| 423 | { |
| 424 | unsigned i; |
| 425 | |
| 426 | urb->hcpriv = NULL; |
| 427 | ep->error_count = 0; |
| 428 | |
| 429 | if (usb_pipecontrol(urb->pipe)) |
| 430 | ep->nextpid = USB_PID_SETUP; |
| 431 | |
| 432 | urb_dbg(urb, "Finish"); |
| 433 | |
| 434 | spin_unlock(&isp116x->lock); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 435 | usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 436 | spin_lock(&isp116x->lock); |
| 437 | |
| 438 | /* take idle endpoints out of the schedule */ |
| 439 | if (!list_empty(&ep->hep->urb_list)) |
| 440 | return; |
| 441 | |
| 442 | /* async deschedule */ |
| 443 | if (!list_empty(&ep->schedule)) { |
| 444 | list_del_init(&ep->schedule); |
| 445 | return; |
| 446 | } |
| 447 | |
| 448 | /* periodic deschedule */ |
| 449 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); |
| 450 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { |
| 451 | struct isp116x_ep *temp; |
| 452 | struct isp116x_ep **prev = &isp116x->periodic[i]; |
| 453 | |
| 454 | while (*prev && ((temp = *prev) != ep)) |
| 455 | prev = &temp->next; |
| 456 | if (*prev) |
| 457 | *prev = ep->next; |
| 458 | isp116x->load[i] -= ep->load; |
| 459 | } |
| 460 | ep->branch = PERIODIC_SIZE; |
| 461 | isp116x_to_hcd(isp116x)->self.bandwidth_allocated -= |
| 462 | ep->load / ep->period; |
| 463 | |
| 464 | /* switch irq type? */ |
| 465 | if (!--isp116x->periodic_count) { |
| 466 | isp116x->irqenb &= ~HCuPINT_SOF; |
| 467 | isp116x->irqenb |= HCuPINT_ATL; |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | /* |
| 472 | Scan transfer lists, schedule transfers, send data off |
| 473 | to chip. |
| 474 | */ |
| 475 | static void start_atl_transfers(struct isp116x *isp116x) |
| 476 | { |
| 477 | struct isp116x_ep *last_ep = NULL, *ep; |
| 478 | struct urb *urb; |
| 479 | u16 load = 0; |
| 480 | int len, index, speed, byte_time; |
| 481 | |
| 482 | if (atomic_read(&isp116x->atl_finishing)) |
| 483 | return; |
| 484 | |
| 485 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) |
| 486 | return; |
| 487 | |
| 488 | /* FIFO not empty? */ |
| 489 | if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) |
| 490 | return; |
| 491 | |
| 492 | isp116x->atl_active = NULL; |
| 493 | isp116x->atl_buflen = isp116x->atl_bufshrt = 0; |
| 494 | |
| 495 | /* Schedule int transfers */ |
| 496 | if (isp116x->periodic_count) { |
| 497 | isp116x->fmindex = index = |
| 498 | (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1); |
| 499 | if ((load = isp116x->load[index])) { |
| 500 | /* Bring all int transfers for this frame |
| 501 | into the active queue */ |
| 502 | isp116x->atl_active = last_ep = |
| 503 | isp116x->periodic[index]; |
| 504 | while (last_ep->next) |
| 505 | last_ep = (last_ep->active = last_ep->next); |
| 506 | last_ep->active = NULL; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | /* Schedule control/bulk transfers */ |
| 511 | list_for_each_entry(ep, &isp116x->async, schedule) { |
| 512 | urb = container_of(ep->hep->urb_list.next, |
| 513 | struct urb, urb_list); |
| 514 | speed = urb->dev->speed; |
| 515 | byte_time = speed == USB_SPEED_LOW |
| 516 | ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED; |
| 517 | |
| 518 | if (ep->nextpid == USB_PID_SETUP) { |
| 519 | len = sizeof(struct usb_ctrlrequest); |
| 520 | } else if (ep->nextpid == USB_PID_ACK) { |
| 521 | len = 0; |
| 522 | } else { |
| 523 | /* Find current free length ... */ |
| 524 | len = (MAX_LOAD_LIMIT - load) / byte_time; |
| 525 | |
| 526 | /* ... then limit it to configured max size ... */ |
| 527 | len = min(len, speed == USB_SPEED_LOW ? |
| 528 | MAX_TRANSFER_SIZE_LOWSPEED : |
| 529 | MAX_TRANSFER_SIZE_FULLSPEED); |
| 530 | |
| 531 | /* ... and finally cut to the multiple of MaxPacketSize, |
| 532 | or to the real length if there's enough room. */ |
| 533 | if (len < |
| 534 | (urb->transfer_buffer_length - |
| 535 | urb->actual_length)) { |
| 536 | len -= len % ep->maxpacket; |
| 537 | if (!len) |
| 538 | continue; |
| 539 | } else |
| 540 | len = urb->transfer_buffer_length - |
| 541 | urb->actual_length; |
| 542 | BUG_ON(len < 0); |
| 543 | } |
| 544 | |
| 545 | load += len * byte_time; |
| 546 | if (load > MAX_LOAD_LIMIT) |
| 547 | break; |
| 548 | |
| 549 | ep->active = NULL; |
| 550 | ep->length = len; |
| 551 | if (last_ep) |
| 552 | last_ep->active = ep; |
| 553 | else |
| 554 | isp116x->atl_active = ep; |
| 555 | last_ep = ep; |
| 556 | } |
| 557 | |
| 558 | /* Avoid starving of endpoints */ |
| 559 | if ((&isp116x->async)->next != (&isp116x->async)->prev) |
| 560 | list_move(&isp116x->async, (&isp116x->async)->next); |
| 561 | |
| 562 | if (isp116x->atl_active) { |
| 563 | preproc_atl_queue(isp116x); |
| 564 | pack_fifo(isp116x); |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | /* |
| 569 | Finish the processed transfers |
| 570 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 571 | static void finish_atl_transfers(struct isp116x *isp116x) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 572 | { |
| 573 | struct isp116x_ep *ep; |
| 574 | struct urb *urb; |
| 575 | |
| 576 | if (!isp116x->atl_active) |
| 577 | return; |
| 578 | /* Fifo not ready? */ |
| 579 | if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) |
| 580 | return; |
| 581 | |
| 582 | atomic_inc(&isp116x->atl_finishing); |
| 583 | unpack_fifo(isp116x); |
| 584 | postproc_atl_queue(isp116x); |
| 585 | for (ep = isp116x->atl_active; ep; ep = ep->active) { |
| 586 | urb = |
| 587 | container_of(ep->hep->urb_list.next, struct urb, urb_list); |
| 588 | /* USB_PID_ACK check here avoids finishing of |
| 589 | control transfers, for which TD_DATAUNDERRUN |
| 590 | occured, while URB_SHORT_NOT_OK was set */ |
| 591 | if (urb && urb->status != -EINPROGRESS |
| 592 | && ep->nextpid != USB_PID_ACK) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 593 | finish_request(isp116x, ep, urb); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 594 | } |
| 595 | atomic_dec(&isp116x->atl_finishing); |
| 596 | } |
| 597 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 598 | static irqreturn_t isp116x_irq(struct usb_hcd *hcd) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 599 | { |
| 600 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 601 | u16 irqstat; |
| 602 | irqreturn_t ret = IRQ_NONE; |
| 603 | |
| 604 | spin_lock(&isp116x->lock); |
| 605 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); |
| 606 | irqstat = isp116x_read_reg16(isp116x, HCuPINT); |
| 607 | isp116x_write_reg16(isp116x, HCuPINT, irqstat); |
| 608 | |
| 609 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { |
| 610 | ret = IRQ_HANDLED; |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 611 | finish_atl_transfers(isp116x); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | if (irqstat & HCuPINT_OPR) { |
| 615 | u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT); |
| 616 | isp116x_write_reg32(isp116x, HCINTSTAT, intstat); |
| 617 | if (intstat & HCINT_UE) { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 618 | ERR("Unrecoverable error, HC is dead!\n"); |
| 619 | /* IRQ's are off, we do no DMA, |
| 620 | perfectly ready to die ... */ |
| 621 | hcd->state = HC_STATE_HALT; |
| 622 | ret = IRQ_HANDLED; |
| 623 | goto done; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 624 | } |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 625 | if (intstat & HCINT_RHSC) |
| 626 | /* When root hub or any of its ports is going |
| 627 | to come out of suspend, it may take more |
| 628 | than 10ms for status bits to stabilize. */ |
| 629 | mod_timer(&hcd->rh_timer, jiffies |
| 630 | + msecs_to_jiffies(20) + 1); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 631 | if (intstat & HCINT_RD) { |
| 632 | DBG("---- remote wakeup\n"); |
David Brownell | ccdcf77 | 2005-09-22 22:45:13 -0700 | [diff] [blame] | 633 | usb_hcd_resume_root_hub(hcd); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 634 | } |
| 635 | irqstat &= ~HCuPINT_OPR; |
| 636 | ret = IRQ_HANDLED; |
| 637 | } |
| 638 | |
| 639 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { |
| 640 | start_atl_transfers(isp116x); |
| 641 | } |
| 642 | |
| 643 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 644 | done: |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 645 | spin_unlock(&isp116x->lock); |
| 646 | return ret; |
| 647 | } |
| 648 | |
| 649 | /*-----------------------------------------------------------------*/ |
| 650 | |
| 651 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. |
| 652 | * this driver doesn't promise that much since it's got to handle an |
| 653 | * IRQ per packet; irq handling latencies also use up that time. |
| 654 | */ |
| 655 | |
| 656 | /* out of 1000 us */ |
| 657 | #define MAX_PERIODIC_LOAD 600 |
| 658 | static int balance(struct isp116x *isp116x, u16 period, u16 load) |
| 659 | { |
| 660 | int i, branch = -ENOSPC; |
| 661 | |
| 662 | /* search for the least loaded schedule branch of that period |
| 663 | which has enough bandwidth left unreserved. */ |
| 664 | for (i = 0; i < period; i++) { |
| 665 | if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) { |
| 666 | int j; |
| 667 | |
| 668 | for (j = i; j < PERIODIC_SIZE; j += period) { |
| 669 | if ((isp116x->load[j] + load) |
| 670 | > MAX_PERIODIC_LOAD) |
| 671 | break; |
| 672 | } |
| 673 | if (j < PERIODIC_SIZE) |
| 674 | continue; |
| 675 | branch = i; |
| 676 | } |
| 677 | } |
| 678 | return branch; |
| 679 | } |
| 680 | |
| 681 | /* NB! ALL the code above this point runs with isp116x->lock |
| 682 | held, irqs off |
| 683 | */ |
| 684 | |
| 685 | /*-----------------------------------------------------------------*/ |
| 686 | |
| 687 | static int isp116x_urb_enqueue(struct usb_hcd *hcd, |
| 688 | struct usb_host_endpoint *hep, struct urb *urb, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 689 | gfp_t mem_flags) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 690 | { |
| 691 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 692 | struct usb_device *udev = urb->dev; |
| 693 | unsigned int pipe = urb->pipe; |
| 694 | int is_out = !usb_pipein(pipe); |
| 695 | int type = usb_pipetype(pipe); |
| 696 | int epnum = usb_pipeendpoint(pipe); |
| 697 | struct isp116x_ep *ep = NULL; |
| 698 | unsigned long flags; |
| 699 | int i; |
| 700 | int ret = 0; |
| 701 | |
| 702 | urb_dbg(urb, "Enqueue"); |
| 703 | |
| 704 | if (type == PIPE_ISOCHRONOUS) { |
| 705 | ERR("Isochronous transfers not supported\n"); |
| 706 | urb_dbg(urb, "Refused to enqueue"); |
| 707 | return -ENXIO; |
| 708 | } |
| 709 | /* avoid all allocations within spinlocks: request or endpoint */ |
| 710 | if (!hep->hcpriv) { |
Pekka Enberg | 7b842b6 | 2005-09-06 15:18:34 -0700 | [diff] [blame] | 711 | ep = kzalloc(sizeof *ep, mem_flags); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 712 | if (!ep) |
| 713 | return -ENOMEM; |
| 714 | } |
| 715 | |
| 716 | spin_lock_irqsave(&isp116x->lock, flags); |
| 717 | if (!HC_IS_RUNNING(hcd->state)) { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 718 | kfree(ep); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 719 | ret = -ENODEV; |
| 720 | goto fail; |
| 721 | } |
| 722 | |
| 723 | if (hep->hcpriv) |
| 724 | ep = hep->hcpriv; |
| 725 | else { |
| 726 | INIT_LIST_HEAD(&ep->schedule); |
Alan Stern | 6a8e87b | 2006-01-19 10:46:27 -0500 | [diff] [blame] | 727 | ep->udev = udev; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 728 | ep->epnum = epnum; |
| 729 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); |
| 730 | usb_settoggle(udev, epnum, is_out, 0); |
| 731 | |
| 732 | if (type == PIPE_CONTROL) { |
| 733 | ep->nextpid = USB_PID_SETUP; |
| 734 | } else if (is_out) { |
| 735 | ep->nextpid = USB_PID_OUT; |
| 736 | } else { |
| 737 | ep->nextpid = USB_PID_IN; |
| 738 | } |
| 739 | |
| 740 | if (urb->interval) { |
| 741 | /* |
| 742 | With INT URBs submitted, the driver works with SOF |
| 743 | interrupt enabled and ATL interrupt disabled. After |
| 744 | the PTDs are written to fifo ram, the chip starts |
| 745 | fifo processing and usb transfers after the next |
| 746 | SOF and continues until the transfers are finished |
| 747 | (succeeded or failed) or the frame ends. Therefore, |
| 748 | the transfers occur only in every second frame, |
| 749 | while fifo reading/writing and data processing |
| 750 | occur in every other second frame. */ |
| 751 | if (urb->interval < 2) |
| 752 | urb->interval = 2; |
| 753 | if (urb->interval > 2 * PERIODIC_SIZE) |
| 754 | urb->interval = 2 * PERIODIC_SIZE; |
| 755 | ep->period = urb->interval >> 1; |
| 756 | ep->branch = PERIODIC_SIZE; |
| 757 | ep->load = usb_calc_bus_time(udev->speed, |
| 758 | !is_out, |
| 759 | (type == PIPE_ISOCHRONOUS), |
| 760 | usb_maxpacket(udev, pipe, |
| 761 | is_out)) / |
| 762 | 1000; |
| 763 | } |
| 764 | hep->hcpriv = ep; |
| 765 | ep->hep = hep; |
| 766 | } |
| 767 | |
| 768 | /* maybe put endpoint into schedule */ |
| 769 | switch (type) { |
| 770 | case PIPE_CONTROL: |
| 771 | case PIPE_BULK: |
| 772 | if (list_empty(&ep->schedule)) |
| 773 | list_add_tail(&ep->schedule, &isp116x->async); |
| 774 | break; |
| 775 | case PIPE_INTERRUPT: |
| 776 | urb->interval = ep->period; |
| 777 | ep->length = min((int)ep->maxpacket, |
| 778 | urb->transfer_buffer_length); |
| 779 | |
| 780 | /* urb submitted for already existing endpoint */ |
| 781 | if (ep->branch < PERIODIC_SIZE) |
| 782 | break; |
| 783 | |
Eric Sesterhenn | d5ce137 | 2006-06-01 20:48:45 -0700 | [diff] [blame] | 784 | ep->branch = ret = balance(isp116x, ep->period, ep->load); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 785 | if (ret < 0) |
| 786 | goto fail; |
| 787 | ret = 0; |
| 788 | |
| 789 | urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1)) |
| 790 | + ep->branch; |
| 791 | |
| 792 | /* sort each schedule branch by period (slow before fast) |
| 793 | to share the faster parts of the tree without needing |
| 794 | dummy/placeholder nodes */ |
| 795 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); |
| 796 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { |
| 797 | struct isp116x_ep **prev = &isp116x->periodic[i]; |
| 798 | struct isp116x_ep *here = *prev; |
| 799 | |
| 800 | while (here && ep != here) { |
| 801 | if (ep->period > here->period) |
| 802 | break; |
| 803 | prev = &here->next; |
| 804 | here = *prev; |
| 805 | } |
| 806 | if (ep != here) { |
| 807 | ep->next = here; |
| 808 | *prev = ep; |
| 809 | } |
| 810 | isp116x->load[i] += ep->load; |
| 811 | } |
| 812 | hcd->self.bandwidth_allocated += ep->load / ep->period; |
| 813 | |
| 814 | /* switch over to SOFint */ |
| 815 | if (!isp116x->periodic_count++) { |
| 816 | isp116x->irqenb &= ~HCuPINT_ATL; |
| 817 | isp116x->irqenb |= HCuPINT_SOF; |
| 818 | isp116x_write_reg16(isp116x, HCuPINTENB, |
| 819 | isp116x->irqenb); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | /* in case of unlink-during-submit */ |
| 824 | spin_lock(&urb->lock); |
| 825 | if (urb->status != -EINPROGRESS) { |
| 826 | spin_unlock(&urb->lock); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 827 | finish_request(isp116x, ep, urb); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 828 | ret = 0; |
| 829 | goto fail; |
| 830 | } |
| 831 | urb->hcpriv = hep; |
| 832 | spin_unlock(&urb->lock); |
| 833 | start_atl_transfers(isp116x); |
| 834 | |
| 835 | fail: |
| 836 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 837 | return ret; |
| 838 | } |
| 839 | |
| 840 | /* |
| 841 | Dequeue URBs. |
| 842 | */ |
| 843 | static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) |
| 844 | { |
| 845 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 846 | struct usb_host_endpoint *hep; |
| 847 | struct isp116x_ep *ep, *ep_act; |
| 848 | unsigned long flags; |
| 849 | |
| 850 | spin_lock_irqsave(&isp116x->lock, flags); |
| 851 | hep = urb->hcpriv; |
| 852 | /* URB already unlinked (or never linked)? */ |
| 853 | if (!hep) { |
| 854 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 855 | return 0; |
| 856 | } |
| 857 | ep = hep->hcpriv; |
| 858 | WARN_ON(hep != ep->hep); |
| 859 | |
| 860 | /* In front of queue? */ |
| 861 | if (ep->hep->urb_list.next == &urb->urb_list) |
| 862 | /* active? */ |
| 863 | for (ep_act = isp116x->atl_active; ep_act; |
| 864 | ep_act = ep_act->active) |
| 865 | if (ep_act == ep) { |
| 866 | VDBG("dequeue, urb %p active; wait for irq\n", |
| 867 | urb); |
| 868 | urb = NULL; |
| 869 | break; |
| 870 | } |
| 871 | |
| 872 | if (urb) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 873 | finish_request(isp116x, ep, urb); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 874 | |
| 875 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 876 | return 0; |
| 877 | } |
| 878 | |
| 879 | static void isp116x_endpoint_disable(struct usb_hcd *hcd, |
| 880 | struct usb_host_endpoint *hep) |
| 881 | { |
| 882 | int i; |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 883 | struct isp116x_ep *ep = hep->hcpriv; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 884 | |
| 885 | if (!ep) |
| 886 | return; |
| 887 | |
| 888 | /* assume we'd just wait for the irq */ |
| 889 | for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++) |
| 890 | msleep(3); |
| 891 | if (!list_empty(&hep->urb_list)) |
| 892 | WARN("ep %p not empty?\n", ep); |
| 893 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 894 | kfree(ep); |
| 895 | hep->hcpriv = NULL; |
| 896 | } |
| 897 | |
| 898 | static int isp116x_get_frame(struct usb_hcd *hcd) |
| 899 | { |
| 900 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 901 | u32 fmnum; |
| 902 | unsigned long flags; |
| 903 | |
| 904 | spin_lock_irqsave(&isp116x->lock, flags); |
| 905 | fmnum = isp116x_read_reg32(isp116x, HCFMNUM); |
| 906 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 907 | return (int)fmnum; |
| 908 | } |
| 909 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 910 | /* |
| 911 | Adapted from ohci-hub.c. Currently we don't support autosuspend. |
| 912 | */ |
| 913 | static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 914 | { |
| 915 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 916 | int ports, i, changed = 0; |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 917 | unsigned long flags; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 918 | |
| 919 | if (!HC_IS_RUNNING(hcd->state)) |
| 920 | return -ESHUTDOWN; |
| 921 | |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 922 | /* Report no status change now, if we are scheduled to be |
| 923 | called later */ |
| 924 | if (timer_pending(&hcd->rh_timer)) |
| 925 | return 0; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 926 | |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 927 | ports = isp116x->rhdesca & RH_A_NDP; |
| 928 | spin_lock_irqsave(&isp116x->lock, flags); |
| 929 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 930 | if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
| 931 | buf[0] = changed = 1; |
| 932 | else |
| 933 | buf[0] = 0; |
| 934 | |
| 935 | for (i = 0; i < ports; i++) { |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 936 | u32 status = isp116x->rhport[i] = |
| 937 | isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 938 | |
| 939 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC |
| 940 | | RH_PS_OCIC | RH_PS_PRSC)) { |
| 941 | changed = 1; |
| 942 | buf[0] |= 1 << (i + 1); |
| 943 | continue; |
| 944 | } |
| 945 | } |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 946 | spin_unlock_irqrestore(&isp116x->lock, flags); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 947 | return changed; |
| 948 | } |
| 949 | |
| 950 | static void isp116x_hub_descriptor(struct isp116x *isp116x, |
| 951 | struct usb_hub_descriptor *desc) |
| 952 | { |
| 953 | u32 reg = isp116x->rhdesca; |
| 954 | |
| 955 | desc->bDescriptorType = 0x29; |
| 956 | desc->bDescLength = 9; |
| 957 | desc->bHubContrCurrent = 0; |
| 958 | desc->bNbrPorts = (u8) (reg & 0x3); |
| 959 | /* Power switching, device type, overcurrent. */ |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 960 | desc->wHubCharacteristics = cpu_to_le16((u16) ((reg >> 8) & 0x1f)); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 961 | desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff); |
| 962 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 963 | desc->bitmap[0] = 0; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 964 | desc->bitmap[1] = ~0; |
| 965 | } |
| 966 | |
| 967 | /* Perform reset of a given port. |
| 968 | It would be great to just start the reset and let the |
| 969 | USB core to clear the reset in due time. However, |
| 970 | root hub ports should be reset for at least 50 ms, while |
| 971 | our chip stays in reset for about 10 ms. I.e., we must |
| 972 | repeatedly reset it ourself here. |
| 973 | */ |
| 974 | static inline void root_port_reset(struct isp116x *isp116x, unsigned port) |
| 975 | { |
| 976 | u32 tmp; |
| 977 | unsigned long flags, t; |
| 978 | |
| 979 | /* Root hub reset should be 50 ms, but some devices |
| 980 | want it even longer. */ |
| 981 | t = jiffies + msecs_to_jiffies(100); |
| 982 | |
| 983 | while (time_before(jiffies, t)) { |
| 984 | spin_lock_irqsave(&isp116x->lock, flags); |
| 985 | /* spin until any current reset finishes */ |
| 986 | for (;;) { |
| 987 | tmp = isp116x_read_reg32(isp116x, port ? |
| 988 | HCRHPORT2 : HCRHPORT1); |
| 989 | if (!(tmp & RH_PS_PRS)) |
| 990 | break; |
| 991 | udelay(500); |
| 992 | } |
| 993 | /* Don't reset a disconnected port */ |
| 994 | if (!(tmp & RH_PS_CCS)) { |
| 995 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 996 | break; |
| 997 | } |
| 998 | /* Reset lasts 10ms (claims datasheet) */ |
| 999 | isp116x_write_reg32(isp116x, port ? HCRHPORT2 : |
| 1000 | HCRHPORT1, (RH_PS_PRS)); |
| 1001 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1002 | msleep(10); |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | /* Adapted from ohci-hub.c */ |
| 1007 | static int isp116x_hub_control(struct usb_hcd *hcd, |
| 1008 | u16 typeReq, |
| 1009 | u16 wValue, u16 wIndex, char *buf, u16 wLength) |
| 1010 | { |
| 1011 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 1012 | int ret = 0; |
| 1013 | unsigned long flags; |
| 1014 | int ports = isp116x->rhdesca & RH_A_NDP; |
| 1015 | u32 tmp = 0; |
| 1016 | |
| 1017 | switch (typeReq) { |
| 1018 | case ClearHubFeature: |
| 1019 | DBG("ClearHubFeature: "); |
| 1020 | switch (wValue) { |
| 1021 | case C_HUB_OVER_CURRENT: |
| 1022 | DBG("C_HUB_OVER_CURRENT\n"); |
| 1023 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1024 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC); |
| 1025 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1026 | case C_HUB_LOCAL_POWER: |
| 1027 | DBG("C_HUB_LOCAL_POWER\n"); |
| 1028 | break; |
| 1029 | default: |
| 1030 | goto error; |
| 1031 | } |
| 1032 | break; |
| 1033 | case SetHubFeature: |
| 1034 | DBG("SetHubFeature: "); |
| 1035 | switch (wValue) { |
| 1036 | case C_HUB_OVER_CURRENT: |
| 1037 | case C_HUB_LOCAL_POWER: |
| 1038 | DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); |
| 1039 | break; |
| 1040 | default: |
| 1041 | goto error; |
| 1042 | } |
| 1043 | break; |
| 1044 | case GetHubDescriptor: |
| 1045 | DBG("GetHubDescriptor\n"); |
| 1046 | isp116x_hub_descriptor(isp116x, |
| 1047 | (struct usb_hub_descriptor *)buf); |
| 1048 | break; |
| 1049 | case GetHubStatus: |
| 1050 | DBG("GetHubStatus\n"); |
Olav Kongas | 17f8bb7 | 2005-06-23 20:12:24 +0300 | [diff] [blame] | 1051 | *(__le32 *) buf = 0; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1052 | break; |
| 1053 | case GetPortStatus: |
| 1054 | DBG("GetPortStatus\n"); |
| 1055 | if (!wIndex || wIndex > ports) |
| 1056 | goto error; |
| 1057 | tmp = isp116x->rhport[--wIndex]; |
| 1058 | *(__le32 *) buf = cpu_to_le32(tmp); |
| 1059 | DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp); |
| 1060 | break; |
| 1061 | case ClearPortFeature: |
| 1062 | DBG("ClearPortFeature: "); |
| 1063 | if (!wIndex || wIndex > ports) |
| 1064 | goto error; |
| 1065 | wIndex--; |
| 1066 | |
| 1067 | switch (wValue) { |
| 1068 | case USB_PORT_FEAT_ENABLE: |
| 1069 | DBG("USB_PORT_FEAT_ENABLE\n"); |
| 1070 | tmp = RH_PS_CCS; |
| 1071 | break; |
| 1072 | case USB_PORT_FEAT_C_ENABLE: |
| 1073 | DBG("USB_PORT_FEAT_C_ENABLE\n"); |
| 1074 | tmp = RH_PS_PESC; |
| 1075 | break; |
| 1076 | case USB_PORT_FEAT_SUSPEND: |
| 1077 | DBG("USB_PORT_FEAT_SUSPEND\n"); |
| 1078 | tmp = RH_PS_POCI; |
| 1079 | break; |
| 1080 | case USB_PORT_FEAT_C_SUSPEND: |
| 1081 | DBG("USB_PORT_FEAT_C_SUSPEND\n"); |
| 1082 | tmp = RH_PS_PSSC; |
| 1083 | break; |
| 1084 | case USB_PORT_FEAT_POWER: |
| 1085 | DBG("USB_PORT_FEAT_POWER\n"); |
| 1086 | tmp = RH_PS_LSDA; |
| 1087 | break; |
| 1088 | case USB_PORT_FEAT_C_CONNECTION: |
| 1089 | DBG("USB_PORT_FEAT_C_CONNECTION\n"); |
| 1090 | tmp = RH_PS_CSC; |
| 1091 | break; |
| 1092 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 1093 | DBG("USB_PORT_FEAT_C_OVER_CURRENT\n"); |
| 1094 | tmp = RH_PS_OCIC; |
| 1095 | break; |
| 1096 | case USB_PORT_FEAT_C_RESET: |
| 1097 | DBG("USB_PORT_FEAT_C_RESET\n"); |
| 1098 | tmp = RH_PS_PRSC; |
| 1099 | break; |
| 1100 | default: |
| 1101 | goto error; |
| 1102 | } |
| 1103 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1104 | isp116x_write_reg32(isp116x, wIndex |
| 1105 | ? HCRHPORT2 : HCRHPORT1, tmp); |
| 1106 | isp116x->rhport[wIndex] = |
| 1107 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); |
| 1108 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1109 | break; |
| 1110 | case SetPortFeature: |
| 1111 | DBG("SetPortFeature: "); |
| 1112 | if (!wIndex || wIndex > ports) |
| 1113 | goto error; |
| 1114 | wIndex--; |
| 1115 | switch (wValue) { |
| 1116 | case USB_PORT_FEAT_SUSPEND: |
| 1117 | DBG("USB_PORT_FEAT_SUSPEND\n"); |
| 1118 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1119 | isp116x_write_reg32(isp116x, wIndex |
| 1120 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); |
| 1121 | break; |
| 1122 | case USB_PORT_FEAT_POWER: |
| 1123 | DBG("USB_PORT_FEAT_POWER\n"); |
| 1124 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1125 | isp116x_write_reg32(isp116x, wIndex |
| 1126 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS); |
| 1127 | break; |
| 1128 | case USB_PORT_FEAT_RESET: |
| 1129 | DBG("USB_PORT_FEAT_RESET\n"); |
| 1130 | root_port_reset(isp116x, wIndex); |
| 1131 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1132 | break; |
| 1133 | default: |
| 1134 | goto error; |
| 1135 | } |
| 1136 | isp116x->rhport[wIndex] = |
| 1137 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); |
| 1138 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1139 | break; |
| 1140 | |
| 1141 | default: |
| 1142 | error: |
| 1143 | /* "protocol stall" on error */ |
| 1144 | DBG("PROTOCOL STALL\n"); |
| 1145 | ret = -EPIPE; |
| 1146 | } |
| 1147 | return ret; |
| 1148 | } |
| 1149 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1150 | /*-----------------------------------------------------------------*/ |
| 1151 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1152 | #ifdef CONFIG_DEBUG_FS |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1153 | |
| 1154 | static void dump_irq(struct seq_file *s, char *label, u16 mask) |
| 1155 | { |
| 1156 | seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask, |
| 1157 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", |
| 1158 | mask & HCuPINT_SUSP ? " susp" : "", |
| 1159 | mask & HCuPINT_OPR ? " opr" : "", |
| 1160 | mask & HCuPINT_AIIEOT ? " eot" : "", |
| 1161 | mask & HCuPINT_ATL ? " atl" : "", |
| 1162 | mask & HCuPINT_SOF ? " sof" : ""); |
| 1163 | } |
| 1164 | |
| 1165 | static void dump_int(struct seq_file *s, char *label, u32 mask) |
| 1166 | { |
| 1167 | seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask, |
| 1168 | mask & HCINT_MIE ? " MIE" : "", |
| 1169 | mask & HCINT_RHSC ? " rhsc" : "", |
| 1170 | mask & HCINT_FNO ? " fno" : "", |
| 1171 | mask & HCINT_UE ? " ue" : "", |
| 1172 | mask & HCINT_RD ? " rd" : "", |
| 1173 | mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); |
| 1174 | } |
| 1175 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1176 | static int isp116x_show_dbg(struct seq_file *s, void *unused) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1177 | { |
| 1178 | struct isp116x *isp116x = s->private; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1179 | |
| 1180 | seq_printf(s, "%s\n%s version %s\n", |
| 1181 | isp116x_to_hcd(isp116x)->product_desc, hcd_name, |
| 1182 | DRIVER_VERSION); |
| 1183 | |
| 1184 | if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) { |
| 1185 | seq_printf(s, "HCD is suspended\n"); |
| 1186 | return 0; |
| 1187 | } |
| 1188 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) { |
| 1189 | seq_printf(s, "HCD not running\n"); |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
| 1193 | spin_lock_irq(&isp116x->lock); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1194 | dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB)); |
| 1195 | dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT)); |
| 1196 | dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB)); |
| 1197 | dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT)); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1198 | isp116x_show_regs_seq(isp116x, s); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1199 | spin_unlock_irq(&isp116x->lock); |
| 1200 | seq_printf(s, "\n"); |
| 1201 | |
| 1202 | return 0; |
| 1203 | } |
| 1204 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1205 | static int isp116x_open_seq(struct inode *inode, struct file *file) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1206 | { |
Theodore Ts'o | 8e18e29 | 2006-09-27 01:50:46 -0700 | [diff] [blame] | 1207 | return single_open(file, isp116x_show_dbg, inode->i_private); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1208 | } |
| 1209 | |
Luiz Fernando N. Capitulino | 066202d | 2006-08-05 20:37:11 -0300 | [diff] [blame] | 1210 | static const struct file_operations isp116x_debug_fops = { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1211 | .open = isp116x_open_seq, |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1212 | .read = seq_read, |
| 1213 | .llseek = seq_lseek, |
| 1214 | .release = single_release, |
| 1215 | }; |
| 1216 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1217 | static int create_debug_file(struct isp116x *isp116x) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1218 | { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1219 | isp116x->dentry = debugfs_create_file(hcd_name, |
| 1220 | S_IRUGO, NULL, isp116x, |
| 1221 | &isp116x_debug_fops); |
| 1222 | if (!isp116x->dentry) |
| 1223 | return -ENOMEM; |
| 1224 | return 0; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1225 | } |
| 1226 | |
| 1227 | static void remove_debug_file(struct isp116x *isp116x) |
| 1228 | { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1229 | debugfs_remove(isp116x->dentry); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1230 | } |
| 1231 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1232 | #else |
| 1233 | |
| 1234 | #define create_debug_file(d) 0 |
| 1235 | #define remove_debug_file(d) do{}while(0) |
| 1236 | |
| 1237 | #endif /* CONFIG_DEBUG_FS */ |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1238 | |
| 1239 | /*-----------------------------------------------------------------*/ |
| 1240 | |
| 1241 | /* |
| 1242 | Software reset - can be called from any contect. |
| 1243 | */ |
| 1244 | static int isp116x_sw_reset(struct isp116x *isp116x) |
| 1245 | { |
| 1246 | int retries = 15; |
| 1247 | unsigned long flags; |
| 1248 | int ret = 0; |
| 1249 | |
| 1250 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1251 | isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC); |
| 1252 | isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR); |
| 1253 | while (--retries) { |
| 1254 | /* It usually resets within 1 ms */ |
| 1255 | mdelay(1); |
| 1256 | if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR)) |
| 1257 | break; |
| 1258 | } |
| 1259 | if (!retries) { |
| 1260 | ERR("Software reset timeout\n"); |
| 1261 | ret = -ETIME; |
| 1262 | } |
| 1263 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1264 | return ret; |
| 1265 | } |
| 1266 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1267 | static int isp116x_reset(struct usb_hcd *hcd) |
| 1268 | { |
| 1269 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 1270 | unsigned long t; |
| 1271 | u16 clkrdy = 0; |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1272 | int ret, timeout = 15 /* ms */ ; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1273 | |
Olav Kongas | f8d23d3 | 2005-08-04 17:02:54 +0300 | [diff] [blame] | 1274 | ret = isp116x_sw_reset(isp116x); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1275 | if (ret) |
| 1276 | return ret; |
| 1277 | |
| 1278 | t = jiffies + msecs_to_jiffies(timeout); |
| 1279 | while (time_before_eq(jiffies, t)) { |
| 1280 | msleep(4); |
| 1281 | spin_lock_irq(&isp116x->lock); |
| 1282 | clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY; |
| 1283 | spin_unlock_irq(&isp116x->lock); |
| 1284 | if (clkrdy) |
| 1285 | break; |
| 1286 | } |
| 1287 | if (!clkrdy) { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1288 | ERR("Clock not ready after %dms\n", timeout); |
Olav Kongas | 589a008 | 2005-04-21 17:12:59 +0300 | [diff] [blame] | 1289 | /* After sw_reset the clock won't report to be ready, if |
| 1290 | H_WAKEUP pin is high. */ |
Olav Kongas | f8d23d3 | 2005-08-04 17:02:54 +0300 | [diff] [blame] | 1291 | ERR("Please make sure that the H_WAKEUP pin is pulled low!\n"); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1292 | ret = -ENODEV; |
| 1293 | } |
| 1294 | return ret; |
| 1295 | } |
| 1296 | |
| 1297 | static void isp116x_stop(struct usb_hcd *hcd) |
| 1298 | { |
| 1299 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 1300 | unsigned long flags; |
| 1301 | u32 val; |
| 1302 | |
| 1303 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1304 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); |
| 1305 | |
| 1306 | /* Switch off ports' power, some devices don't come up |
| 1307 | after next 'insmod' without this */ |
| 1308 | val = isp116x_read_reg32(isp116x, HCRHDESCA); |
| 1309 | val &= ~(RH_A_NPS | RH_A_PSM); |
| 1310 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
| 1311 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS); |
| 1312 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1313 | |
Olav Kongas | f8d23d3 | 2005-08-04 17:02:54 +0300 | [diff] [blame] | 1314 | isp116x_sw_reset(isp116x); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1315 | } |
| 1316 | |
| 1317 | /* |
| 1318 | Configure the chip. The chip must be successfully reset by now. |
| 1319 | */ |
| 1320 | static int isp116x_start(struct usb_hcd *hcd) |
| 1321 | { |
| 1322 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 1323 | struct isp116x_platform_data *board = isp116x->board; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1324 | u32 val; |
| 1325 | unsigned long flags; |
| 1326 | |
| 1327 | spin_lock_irqsave(&isp116x->lock, flags); |
| 1328 | |
| 1329 | /* clear interrupt status and disable all interrupt sources */ |
| 1330 | isp116x_write_reg16(isp116x, HCuPINT, 0xff); |
| 1331 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); |
| 1332 | |
| 1333 | val = isp116x_read_reg16(isp116x, HCCHIPID); |
| 1334 | if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) { |
| 1335 | ERR("Invalid chip ID %04x\n", val); |
| 1336 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1337 | return -ENODEV; |
| 1338 | } |
| 1339 | |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 1340 | /* To be removed in future */ |
| 1341 | hcd->uses_new_polling = 1; |
| 1342 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1343 | isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE); |
| 1344 | isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE); |
| 1345 | |
| 1346 | /* ----- HW conf */ |
| 1347 | val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); |
| 1348 | if (board->sel15Kres) |
| 1349 | val |= HCHWCFG_15KRSEL; |
| 1350 | /* Remote wakeup won't work without working clock */ |
Olav Kongas | d4d6286 | 2005-08-04 16:48:19 +0300 | [diff] [blame] | 1351 | if (board->remote_wakeup_enable) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1352 | val |= HCHWCFG_CLKNOTSTOP; |
| 1353 | if (board->oc_enable) |
| 1354 | val |= HCHWCFG_ANALOG_OC; |
| 1355 | if (board->int_act_high) |
| 1356 | val |= HCHWCFG_INT_POL; |
| 1357 | if (board->int_edge_triggered) |
| 1358 | val |= HCHWCFG_INT_TRIGGER; |
| 1359 | isp116x_write_reg16(isp116x, HCHWCFG, val); |
| 1360 | |
| 1361 | /* ----- Root hub conf */ |
Olav Kongas | dc5bed0 | 2005-08-04 16:46:28 +0300 | [diff] [blame] | 1362 | val = (25 << 24) & RH_A_POTPGT; |
Olav Kongas | 165c0f3 | 2005-08-04 16:52:31 +0300 | [diff] [blame] | 1363 | /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to |
| 1364 | be always set. Yet, instead, we request individual port |
| 1365 | power switching. */ |
| 1366 | val |= RH_A_PSM; |
Olav Kongas | 9d233d9 | 2005-08-04 16:54:08 +0300 | [diff] [blame] | 1367 | /* Report overcurrent per port */ |
| 1368 | val |= RH_A_OCPM; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1369 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
| 1370 | isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA); |
| 1371 | |
| 1372 | val = RH_B_PPCM; |
| 1373 | isp116x_write_reg32(isp116x, HCRHDESCB, val); |
| 1374 | isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB); |
| 1375 | |
| 1376 | val = 0; |
| 1377 | if (board->remote_wakeup_enable) { |
David Brownell | 704aa0b | 2005-11-07 15:38:24 -0800 | [diff] [blame] | 1378 | if (!device_can_wakeup(hcd->self.controller)) |
| 1379 | device_init_wakeup(hcd->self.controller, 1); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1380 | val |= RH_HS_DRWE; |
| 1381 | } |
| 1382 | isp116x_write_reg32(isp116x, HCRHSTATUS, val); |
| 1383 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); |
| 1384 | |
| 1385 | isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1386 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1387 | hcd->state = HC_STATE_RUNNING; |
| 1388 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1389 | /* Set up interrupts */ |
| 1390 | isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; |
| 1391 | if (board->remote_wakeup_enable) |
| 1392 | isp116x->intenb |= HCINT_RD; |
| 1393 | isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */ |
| 1394 | isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb); |
| 1395 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); |
| 1396 | |
| 1397 | /* Go operational */ |
| 1398 | val = HCCONTROL_USB_OPER; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1399 | if (board->remote_wakeup_enable) |
| 1400 | val |= HCCONTROL_RWE; |
| 1401 | isp116x_write_reg32(isp116x, HCCONTROL, val); |
| 1402 | |
| 1403 | /* Disable ports to avoid race in device enumeration */ |
| 1404 | isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS); |
| 1405 | isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS); |
| 1406 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1407 | isp116x_show_regs_log(isp116x); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1408 | spin_unlock_irqrestore(&isp116x->lock, flags); |
| 1409 | return 0; |
| 1410 | } |
| 1411 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1412 | #ifdef CONFIG_PM |
| 1413 | |
| 1414 | static int isp116x_bus_suspend(struct usb_hcd *hcd) |
| 1415 | { |
| 1416 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 1417 | unsigned long flags; |
| 1418 | u32 val; |
| 1419 | int ret = 0; |
| 1420 | |
| 1421 | spin_lock_irqsave(&isp116x->lock, flags); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1422 | val = isp116x_read_reg32(isp116x, HCCONTROL); |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1423 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1424 | switch (val & HCCONTROL_HCFS) { |
| 1425 | case HCCONTROL_USB_OPER: |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1426 | spin_unlock_irqrestore(&isp116x->lock, flags); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1427 | val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE); |
| 1428 | val |= HCCONTROL_USB_SUSPEND; |
David Brownell | 704aa0b | 2005-11-07 15:38:24 -0800 | [diff] [blame] | 1429 | if (device_may_wakeup(&hcd->self.root_hub->dev)) |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1430 | val |= HCCONTROL_RWE; |
| 1431 | /* Wait for usb transfers to finish */ |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1432 | msleep(2); |
| 1433 | spin_lock_irqsave(&isp116x->lock, flags); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1434 | isp116x_write_reg32(isp116x, HCCONTROL, val); |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1435 | spin_unlock_irqrestore(&isp116x->lock, flags); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1436 | /* Wait for devices to suspend */ |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1437 | msleep(5); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1438 | break; |
| 1439 | case HCCONTROL_USB_RESUME: |
| 1440 | isp116x_write_reg32(isp116x, HCCONTROL, |
| 1441 | (val & ~HCCONTROL_HCFS) | |
| 1442 | HCCONTROL_USB_RESET); |
| 1443 | case HCCONTROL_USB_RESET: |
| 1444 | ret = -EBUSY; |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1445 | default: /* HCCONTROL_USB_SUSPEND */ |
| 1446 | spin_unlock_irqrestore(&isp116x->lock, flags); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1447 | break; |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1448 | } |
| 1449 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1450 | return ret; |
| 1451 | } |
| 1452 | |
| 1453 | static int isp116x_bus_resume(struct usb_hcd *hcd) |
| 1454 | { |
| 1455 | struct isp116x *isp116x = hcd_to_isp116x(hcd); |
| 1456 | u32 val; |
| 1457 | |
| 1458 | msleep(5); |
| 1459 | spin_lock_irq(&isp116x->lock); |
| 1460 | |
| 1461 | val = isp116x_read_reg32(isp116x, HCCONTROL); |
| 1462 | switch (val & HCCONTROL_HCFS) { |
| 1463 | case HCCONTROL_USB_SUSPEND: |
| 1464 | val &= ~HCCONTROL_HCFS; |
| 1465 | val |= HCCONTROL_USB_RESUME; |
| 1466 | isp116x_write_reg32(isp116x, HCCONTROL, val); |
| 1467 | case HCCONTROL_USB_RESUME: |
| 1468 | break; |
| 1469 | case HCCONTROL_USB_OPER: |
| 1470 | spin_unlock_irq(&isp116x->lock); |
| 1471 | /* Without setting power_state here the |
| 1472 | SUSPENDED state won't be removed from |
| 1473 | sysfs/usbN/power.state as a response to remote |
| 1474 | wakeup. Maybe in the future. */ |
| 1475 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| 1476 | return 0; |
| 1477 | default: |
| 1478 | /* HCCONTROL_USB_RESET: this may happen, when during |
| 1479 | suspension the HC lost power. Reinitialize completely */ |
| 1480 | spin_unlock_irq(&isp116x->lock); |
| 1481 | DBG("Chip has been reset while suspended. Reinit from scratch.\n"); |
| 1482 | isp116x_reset(hcd); |
| 1483 | isp116x_start(hcd); |
| 1484 | isp116x_hub_control(hcd, SetPortFeature, |
| 1485 | USB_PORT_FEAT_POWER, 1, NULL, 0); |
| 1486 | if ((isp116x->rhdesca & RH_A_NDP) == 2) |
| 1487 | isp116x_hub_control(hcd, SetPortFeature, |
| 1488 | USB_PORT_FEAT_POWER, 2, NULL, 0); |
| 1489 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| 1490 | return 0; |
| 1491 | } |
| 1492 | |
| 1493 | val = isp116x->rhdesca & RH_A_NDP; |
| 1494 | while (val--) { |
| 1495 | u32 stat = |
| 1496 | isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1); |
| 1497 | /* force global, not selective, resume */ |
| 1498 | if (!(stat & RH_PS_PSS)) |
| 1499 | continue; |
| 1500 | DBG("%s: Resuming port %d\n", __func__, val); |
| 1501 | isp116x_write_reg32(isp116x, RH_PS_POCI, val |
| 1502 | ? HCRHPORT2 : HCRHPORT1); |
| 1503 | } |
| 1504 | spin_unlock_irq(&isp116x->lock); |
| 1505 | |
| 1506 | hcd->state = HC_STATE_RESUMING; |
| 1507 | msleep(20); |
| 1508 | |
| 1509 | /* Go operational */ |
| 1510 | spin_lock_irq(&isp116x->lock); |
| 1511 | val = isp116x_read_reg32(isp116x, HCCONTROL); |
| 1512 | isp116x_write_reg32(isp116x, HCCONTROL, |
| 1513 | (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER); |
| 1514 | spin_unlock_irq(&isp116x->lock); |
| 1515 | /* see analogous comment above */ |
| 1516 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| 1517 | hcd->state = HC_STATE_RUNNING; |
| 1518 | |
| 1519 | return 0; |
| 1520 | } |
| 1521 | |
| 1522 | #else |
| 1523 | |
| 1524 | #define isp116x_bus_suspend NULL |
| 1525 | #define isp116x_bus_resume NULL |
| 1526 | |
| 1527 | #endif |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1528 | |
| 1529 | static struct hc_driver isp116x_hc_driver = { |
| 1530 | .description = hcd_name, |
| 1531 | .product_desc = "ISP116x Host Controller", |
| 1532 | .hcd_priv_size = sizeof(struct isp116x), |
| 1533 | |
| 1534 | .irq = isp116x_irq, |
| 1535 | .flags = HCD_USB11, |
| 1536 | |
| 1537 | .reset = isp116x_reset, |
| 1538 | .start = isp116x_start, |
| 1539 | .stop = isp116x_stop, |
| 1540 | |
| 1541 | .urb_enqueue = isp116x_urb_enqueue, |
| 1542 | .urb_dequeue = isp116x_urb_dequeue, |
| 1543 | .endpoint_disable = isp116x_endpoint_disable, |
| 1544 | |
| 1545 | .get_frame_number = isp116x_get_frame, |
| 1546 | |
| 1547 | .hub_status_data = isp116x_hub_status_data, |
| 1548 | .hub_control = isp116x_hub_control, |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1549 | .bus_suspend = isp116x_bus_suspend, |
| 1550 | .bus_resume = isp116x_bus_resume, |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1551 | }; |
| 1552 | |
| 1553 | /*----------------------------------------------------------------*/ |
| 1554 | |
Greg Kroah-Hartman | b712548 | 2006-03-17 17:40:08 -0800 | [diff] [blame] | 1555 | static int isp116x_remove(struct platform_device *pdev) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1556 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1557 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
Olav Kongas | 589a008 | 2005-04-21 17:12:59 +0300 | [diff] [blame] | 1558 | struct isp116x *isp116x; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1559 | struct resource *res; |
| 1560 | |
Olav Kongas | 9a57116 | 2005-08-05 14:23:35 +0300 | [diff] [blame] | 1561 | if (!hcd) |
Olav Kongas | 589a008 | 2005-04-21 17:12:59 +0300 | [diff] [blame] | 1562 | return 0; |
| 1563 | isp116x = hcd_to_isp116x(hcd); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1564 | remove_debug_file(isp116x); |
| 1565 | usb_remove_hcd(hcd); |
| 1566 | |
| 1567 | iounmap(isp116x->data_reg); |
| 1568 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 1569 | release_mem_region(res->start, 2); |
| 1570 | iounmap(isp116x->addr_reg); |
| 1571 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1572 | release_mem_region(res->start, 2); |
| 1573 | |
| 1574 | usb_put_hcd(hcd); |
| 1575 | return 0; |
| 1576 | } |
| 1577 | |
| 1578 | #define resource_len(r) (((r)->end - (r)->start) + 1) |
| 1579 | |
Prarit Bhargava | 5bcd70e | 2007-02-09 01:51:15 -0800 | [diff] [blame] | 1580 | static int __devinit isp116x_probe(struct platform_device *pdev) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1581 | { |
| 1582 | struct usb_hcd *hcd; |
| 1583 | struct isp116x *isp116x; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1584 | struct resource *addr, *data; |
| 1585 | void __iomem *addr_reg; |
| 1586 | void __iomem *data_reg; |
| 1587 | int irq; |
| 1588 | int ret = 0; |
| 1589 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1590 | if (pdev->num_resources < 3) { |
| 1591 | ret = -ENODEV; |
| 1592 | goto err1; |
| 1593 | } |
| 1594 | |
| 1595 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1596 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 1597 | irq = platform_get_irq(pdev, 0); |
| 1598 | if (!addr || !data || irq < 0) { |
| 1599 | ret = -ENODEV; |
| 1600 | goto err1; |
| 1601 | } |
| 1602 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1603 | if (pdev->dev.dma_mask) { |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1604 | DBG("DMA not supported\n"); |
| 1605 | ret = -EINVAL; |
| 1606 | goto err1; |
| 1607 | } |
| 1608 | |
| 1609 | if (!request_mem_region(addr->start, 2, hcd_name)) { |
| 1610 | ret = -EBUSY; |
| 1611 | goto err1; |
| 1612 | } |
| 1613 | addr_reg = ioremap(addr->start, resource_len(addr)); |
| 1614 | if (addr_reg == NULL) { |
| 1615 | ret = -ENOMEM; |
| 1616 | goto err2; |
| 1617 | } |
| 1618 | if (!request_mem_region(data->start, 2, hcd_name)) { |
| 1619 | ret = -EBUSY; |
| 1620 | goto err3; |
| 1621 | } |
| 1622 | data_reg = ioremap(data->start, resource_len(data)); |
| 1623 | if (data_reg == NULL) { |
| 1624 | ret = -ENOMEM; |
| 1625 | goto err4; |
| 1626 | } |
| 1627 | |
| 1628 | /* allocate and initialize hcd */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1629 | hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, pdev->dev.bus_id); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1630 | if (!hcd) { |
| 1631 | ret = -ENOMEM; |
| 1632 | goto err5; |
| 1633 | } |
| 1634 | /* this rsrc_start is bogus */ |
| 1635 | hcd->rsrc_start = addr->start; |
| 1636 | isp116x = hcd_to_isp116x(hcd); |
| 1637 | isp116x->data_reg = data_reg; |
| 1638 | isp116x->addr_reg = addr_reg; |
| 1639 | spin_lock_init(&isp116x->lock); |
| 1640 | INIT_LIST_HEAD(&isp116x->async); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1641 | isp116x->board = pdev->dev.platform_data; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1642 | |
| 1643 | if (!isp116x->board) { |
| 1644 | ERR("Platform data structure not initialized\n"); |
| 1645 | ret = -ENODEV; |
| 1646 | goto err6; |
| 1647 | } |
| 1648 | if (isp116x_check_platform_delay(isp116x)) { |
| 1649 | ERR("USE_PLATFORM_DELAY defined, but delay function not " |
| 1650 | "implemented.\n"); |
| 1651 | ERR("See comments in drivers/usb/host/isp116x-hcd.c\n"); |
| 1652 | ret = -ENODEV; |
| 1653 | goto err6; |
| 1654 | } |
| 1655 | |
Thomas Gleixner | d54b5ca | 2006-07-01 19:29:44 -0700 | [diff] [blame] | 1656 | ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1657 | if (ret) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1658 | goto err6; |
| 1659 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1660 | ret = create_debug_file(isp116x); |
| 1661 | if (ret) { |
| 1662 | ERR("Couldn't create debugfs entry\n"); |
| 1663 | goto err7; |
| 1664 | } |
| 1665 | |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1666 | return 0; |
| 1667 | |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1668 | err7: |
| 1669 | usb_remove_hcd(hcd); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1670 | err6: |
| 1671 | usb_put_hcd(hcd); |
| 1672 | err5: |
| 1673 | iounmap(data_reg); |
| 1674 | err4: |
| 1675 | release_mem_region(data->start, 2); |
| 1676 | err3: |
| 1677 | iounmap(addr_reg); |
| 1678 | err2: |
| 1679 | release_mem_region(addr->start, 2); |
| 1680 | err1: |
| 1681 | ERR("init error, %d\n", ret); |
| 1682 | return ret; |
| 1683 | } |
| 1684 | |
| 1685 | #ifdef CONFIG_PM |
| 1686 | /* |
| 1687 | Suspend of platform device |
| 1688 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1689 | static int isp116x_suspend(struct platform_device *dev, pm_message_t state) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1690 | { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1691 | VDBG("%s: state %x\n", __func__, state.event); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1692 | dev->dev.power.power_state = state; |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1693 | return 0; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1694 | } |
| 1695 | |
| 1696 | /* |
| 1697 | Resume platform device |
| 1698 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1699 | static int isp116x_resume(struct platform_device *dev) |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1700 | { |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1701 | VDBG("%s: state %x\n", __func__, dev->power.power_state.event); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1702 | dev->dev.power.power_state = PMSG_ON; |
Olav Kongas | 959eea2 | 2005-11-03 17:38:14 +0200 | [diff] [blame] | 1703 | return 0; |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1704 | } |
| 1705 | |
| 1706 | #else |
| 1707 | |
| 1708 | #define isp116x_suspend NULL |
| 1709 | #define isp116x_resume NULL |
| 1710 | |
| 1711 | #endif |
| 1712 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1713 | static struct platform_driver isp116x_driver = { |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1714 | .probe = isp116x_probe, |
| 1715 | .remove = isp116x_remove, |
| 1716 | .suspend = isp116x_suspend, |
| 1717 | .resume = isp116x_resume, |
Olav Kongas | 0be930c | 2005-12-27 16:04:02 +0200 | [diff] [blame] | 1718 | .driver = { |
| 1719 | .name = (char *)hcd_name, |
| 1720 | }, |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1721 | }; |
| 1722 | |
| 1723 | /*-----------------------------------------------------------------*/ |
| 1724 | |
| 1725 | static int __init isp116x_init(void) |
| 1726 | { |
| 1727 | if (usb_disabled()) |
| 1728 | return -ENODEV; |
| 1729 | |
| 1730 | INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1731 | return platform_driver_register(&isp116x_driver); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1732 | } |
| 1733 | |
| 1734 | module_init(isp116x_init); |
| 1735 | |
| 1736 | static void __exit isp116x_cleanup(void) |
| 1737 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1738 | platform_driver_unregister(&isp116x_driver); |
Olav Kongas | 4808a1c | 2005-04-09 22:57:39 +0300 | [diff] [blame] | 1739 | } |
| 1740 | |
| 1741 | module_exit(isp116x_cleanup); |