Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1 | /* |
| 2 | * R8A66597 UDC (USB gadget) |
| 3 | * |
| 4 | * Copyright (C) 2006-2009 Renesas Solutions Corp. |
| 5 | * |
| 6 | * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.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 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/io.h> |
| 27 | #include <linux/platform_device.h> |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 28 | #include <linux/clk.h> |
Mark Brown | ae3a079 | 2010-01-18 12:03:18 +0000 | [diff] [blame] | 29 | #include <linux/err.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 31 | |
| 32 | #include <linux/usb/ch9.h> |
| 33 | #include <linux/usb/gadget.h> |
| 34 | |
| 35 | #include "r8a66597-udc.h" |
| 36 | |
| 37 | #define DRIVER_VERSION "2009-08-18" |
| 38 | |
| 39 | static const char udc_name[] = "r8a66597_udc"; |
| 40 | static const char *r8a66597_ep_name[] = { |
| 41 | "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7", |
| 42 | "ep8", "ep9", |
| 43 | }; |
| 44 | |
Yusuke Goda | e576a7a | 2010-10-20 09:28:08 +0900 | [diff] [blame] | 45 | static void init_controller(struct r8a66597 *r8a66597); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 46 | static void disable_controller(struct r8a66597 *r8a66597); |
| 47 | static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req); |
| 48 | static void irq_packet_write(struct r8a66597_ep *ep, |
| 49 | struct r8a66597_request *req); |
| 50 | static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 51 | gfp_t gfp_flags); |
| 52 | |
| 53 | static void transfer_complete(struct r8a66597_ep *ep, |
| 54 | struct r8a66597_request *req, int status); |
| 55 | |
| 56 | /*-------------------------------------------------------------------------*/ |
| 57 | static inline u16 get_usb_speed(struct r8a66597 *r8a66597) |
| 58 | { |
| 59 | return r8a66597_read(r8a66597, DVSTCTR0) & RHST; |
| 60 | } |
| 61 | |
| 62 | static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, |
| 63 | unsigned long reg) |
| 64 | { |
| 65 | u16 tmp; |
| 66 | |
| 67 | tmp = r8a66597_read(r8a66597, INTENB0); |
| 68 | r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, |
| 69 | INTENB0); |
| 70 | r8a66597_bset(r8a66597, (1 << pipenum), reg); |
| 71 | r8a66597_write(r8a66597, tmp, INTENB0); |
| 72 | } |
| 73 | |
| 74 | static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, |
| 75 | unsigned long reg) |
| 76 | { |
| 77 | u16 tmp; |
| 78 | |
| 79 | tmp = r8a66597_read(r8a66597, INTENB0); |
| 80 | r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, |
| 81 | INTENB0); |
| 82 | r8a66597_bclr(r8a66597, (1 << pipenum), reg); |
| 83 | r8a66597_write(r8a66597, tmp, INTENB0); |
| 84 | } |
| 85 | |
| 86 | static void r8a66597_usb_connect(struct r8a66597 *r8a66597) |
| 87 | { |
| 88 | r8a66597_bset(r8a66597, CTRE, INTENB0); |
| 89 | r8a66597_bset(r8a66597, BEMPE | BRDYE, INTENB0); |
| 90 | |
| 91 | r8a66597_bset(r8a66597, DPRPU, SYSCFG0); |
| 92 | } |
| 93 | |
| 94 | static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597) |
| 95 | __releases(r8a66597->lock) |
| 96 | __acquires(r8a66597->lock) |
| 97 | { |
| 98 | r8a66597_bclr(r8a66597, CTRE, INTENB0); |
| 99 | r8a66597_bclr(r8a66597, BEMPE | BRDYE, INTENB0); |
| 100 | r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); |
| 101 | |
| 102 | r8a66597->gadget.speed = USB_SPEED_UNKNOWN; |
| 103 | spin_unlock(&r8a66597->lock); |
| 104 | r8a66597->driver->disconnect(&r8a66597->gadget); |
| 105 | spin_lock(&r8a66597->lock); |
| 106 | |
| 107 | disable_controller(r8a66597); |
Yusuke Goda | e576a7a | 2010-10-20 09:28:08 +0900 | [diff] [blame] | 108 | init_controller(r8a66597); |
| 109 | r8a66597_bset(r8a66597, VBSE, INTENB0); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 110 | INIT_LIST_HEAD(&r8a66597->ep[0].queue); |
| 111 | } |
| 112 | |
| 113 | static inline u16 control_reg_get_pid(struct r8a66597 *r8a66597, u16 pipenum) |
| 114 | { |
| 115 | u16 pid = 0; |
| 116 | unsigned long offset; |
| 117 | |
| 118 | if (pipenum == 0) |
| 119 | pid = r8a66597_read(r8a66597, DCPCTR) & PID; |
| 120 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { |
| 121 | offset = get_pipectr_addr(pipenum); |
| 122 | pid = r8a66597_read(r8a66597, offset) & PID; |
| 123 | } else |
| 124 | printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum); |
| 125 | |
| 126 | return pid; |
| 127 | } |
| 128 | |
| 129 | static inline void control_reg_set_pid(struct r8a66597 *r8a66597, u16 pipenum, |
| 130 | u16 pid) |
| 131 | { |
| 132 | unsigned long offset; |
| 133 | |
| 134 | if (pipenum == 0) |
| 135 | r8a66597_mdfy(r8a66597, pid, PID, DCPCTR); |
| 136 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { |
| 137 | offset = get_pipectr_addr(pipenum); |
| 138 | r8a66597_mdfy(r8a66597, pid, PID, offset); |
| 139 | } else |
| 140 | printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum); |
| 141 | } |
| 142 | |
| 143 | static inline void pipe_start(struct r8a66597 *r8a66597, u16 pipenum) |
| 144 | { |
| 145 | control_reg_set_pid(r8a66597, pipenum, PID_BUF); |
| 146 | } |
| 147 | |
| 148 | static inline void pipe_stop(struct r8a66597 *r8a66597, u16 pipenum) |
| 149 | { |
| 150 | control_reg_set_pid(r8a66597, pipenum, PID_NAK); |
| 151 | } |
| 152 | |
| 153 | static inline void pipe_stall(struct r8a66597 *r8a66597, u16 pipenum) |
| 154 | { |
| 155 | control_reg_set_pid(r8a66597, pipenum, PID_STALL); |
| 156 | } |
| 157 | |
| 158 | static inline u16 control_reg_get(struct r8a66597 *r8a66597, u16 pipenum) |
| 159 | { |
| 160 | u16 ret = 0; |
| 161 | unsigned long offset; |
| 162 | |
| 163 | if (pipenum == 0) |
| 164 | ret = r8a66597_read(r8a66597, DCPCTR); |
| 165 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { |
| 166 | offset = get_pipectr_addr(pipenum); |
| 167 | ret = r8a66597_read(r8a66597, offset); |
| 168 | } else |
| 169 | printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum); |
| 170 | |
| 171 | return ret; |
| 172 | } |
| 173 | |
| 174 | static inline void control_reg_sqclr(struct r8a66597 *r8a66597, u16 pipenum) |
| 175 | { |
| 176 | unsigned long offset; |
| 177 | |
| 178 | pipe_stop(r8a66597, pipenum); |
| 179 | |
| 180 | if (pipenum == 0) |
| 181 | r8a66597_bset(r8a66597, SQCLR, DCPCTR); |
| 182 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { |
| 183 | offset = get_pipectr_addr(pipenum); |
| 184 | r8a66597_bset(r8a66597, SQCLR, offset); |
| 185 | } else |
| 186 | printk(KERN_ERR "unexpect pipe num(%d)\n", pipenum); |
| 187 | } |
| 188 | |
| 189 | static inline int get_buffer_size(struct r8a66597 *r8a66597, u16 pipenum) |
| 190 | { |
| 191 | u16 tmp; |
| 192 | int size; |
| 193 | |
| 194 | if (pipenum == 0) { |
| 195 | tmp = r8a66597_read(r8a66597, DCPCFG); |
| 196 | if ((tmp & R8A66597_CNTMD) != 0) |
| 197 | size = 256; |
| 198 | else { |
| 199 | tmp = r8a66597_read(r8a66597, DCPMAXP); |
| 200 | size = tmp & MAXP; |
| 201 | } |
| 202 | } else { |
| 203 | r8a66597_write(r8a66597, pipenum, PIPESEL); |
| 204 | tmp = r8a66597_read(r8a66597, PIPECFG); |
| 205 | if ((tmp & R8A66597_CNTMD) != 0) { |
| 206 | tmp = r8a66597_read(r8a66597, PIPEBUF); |
| 207 | size = ((tmp >> 10) + 1) * 64; |
| 208 | } else { |
| 209 | tmp = r8a66597_read(r8a66597, PIPEMAXP); |
| 210 | size = tmp & MXPS; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | return size; |
| 215 | } |
| 216 | |
| 217 | static inline unsigned short mbw_value(struct r8a66597 *r8a66597) |
| 218 | { |
| 219 | if (r8a66597->pdata->on_chip) |
| 220 | return MBW_32; |
| 221 | else |
| 222 | return MBW_16; |
| 223 | } |
| 224 | |
| 225 | static inline void pipe_change(struct r8a66597 *r8a66597, u16 pipenum) |
| 226 | { |
| 227 | struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum]; |
| 228 | |
| 229 | if (ep->use_dma) |
| 230 | return; |
| 231 | |
| 232 | r8a66597_mdfy(r8a66597, pipenum, CURPIPE, ep->fifosel); |
| 233 | |
| 234 | ndelay(450); |
| 235 | |
| 236 | r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel); |
| 237 | } |
| 238 | |
| 239 | static int pipe_buffer_setting(struct r8a66597 *r8a66597, |
| 240 | struct r8a66597_pipe_info *info) |
| 241 | { |
| 242 | u16 bufnum = 0, buf_bsize = 0; |
| 243 | u16 pipecfg = 0; |
| 244 | |
| 245 | if (info->pipe == 0) |
| 246 | return -EINVAL; |
| 247 | |
| 248 | r8a66597_write(r8a66597, info->pipe, PIPESEL); |
| 249 | |
| 250 | if (info->dir_in) |
| 251 | pipecfg |= R8A66597_DIR; |
| 252 | pipecfg |= info->type; |
| 253 | pipecfg |= info->epnum; |
| 254 | switch (info->type) { |
| 255 | case R8A66597_INT: |
| 256 | bufnum = 4 + (info->pipe - R8A66597_BASE_PIPENUM_INT); |
| 257 | buf_bsize = 0; |
| 258 | break; |
| 259 | case R8A66597_BULK: |
Magnus Damm | ef5ce3b | 2009-08-19 14:19:08 +0000 | [diff] [blame] | 260 | /* isochronous pipes may be used as bulk pipes */ |
Yusuke Goda | 6d86d52 | 2011-01-31 15:49:34 +0900 | [diff] [blame] | 261 | if (info->pipe >= R8A66597_BASE_PIPENUM_BULK) |
Magnus Damm | ef5ce3b | 2009-08-19 14:19:08 +0000 | [diff] [blame] | 262 | bufnum = info->pipe - R8A66597_BASE_PIPENUM_BULK; |
| 263 | else |
| 264 | bufnum = info->pipe - R8A66597_BASE_PIPENUM_ISOC; |
| 265 | |
| 266 | bufnum = R8A66597_BASE_BUFNUM + (bufnum * 16); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 267 | buf_bsize = 7; |
| 268 | pipecfg |= R8A66597_DBLB; |
| 269 | if (!info->dir_in) |
| 270 | pipecfg |= R8A66597_SHTNAK; |
| 271 | break; |
| 272 | case R8A66597_ISO: |
Magnus Damm | ef5ce3b | 2009-08-19 14:19:08 +0000 | [diff] [blame] | 273 | bufnum = R8A66597_BASE_BUFNUM + |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 274 | (info->pipe - R8A66597_BASE_PIPENUM_ISOC) * 16; |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 275 | buf_bsize = 7; |
| 276 | break; |
| 277 | } |
Magnus Damm | ef5ce3b | 2009-08-19 14:19:08 +0000 | [diff] [blame] | 278 | |
| 279 | if (buf_bsize && ((bufnum + 16) >= R8A66597_MAX_BUFNUM)) { |
Joe Perches | c0109b8 | 2010-09-11 22:10:58 -0700 | [diff] [blame] | 280 | pr_err("r8a66597 pipe memory is insufficient\n"); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 281 | return -ENOMEM; |
| 282 | } |
| 283 | |
| 284 | r8a66597_write(r8a66597, pipecfg, PIPECFG); |
| 285 | r8a66597_write(r8a66597, (buf_bsize << 10) | (bufnum), PIPEBUF); |
| 286 | r8a66597_write(r8a66597, info->maxpacket, PIPEMAXP); |
| 287 | if (info->interval) |
| 288 | info->interval--; |
| 289 | r8a66597_write(r8a66597, info->interval, PIPEPERI); |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static void pipe_buffer_release(struct r8a66597 *r8a66597, |
| 295 | struct r8a66597_pipe_info *info) |
| 296 | { |
| 297 | if (info->pipe == 0) |
| 298 | return; |
| 299 | |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 300 | if (is_bulk_pipe(info->pipe)) |
| 301 | r8a66597->bulk--; |
| 302 | else if (is_interrupt_pipe(info->pipe)) |
| 303 | r8a66597->interrupt--; |
| 304 | else if (is_isoc_pipe(info->pipe)) { |
| 305 | r8a66597->isochronous--; |
| 306 | if (info->type == R8A66597_BULK) |
| 307 | r8a66597->bulk--; |
| 308 | } else |
| 309 | printk(KERN_ERR "ep_release: unexpect pipenum (%d)\n", |
| 310 | info->pipe); |
| 311 | } |
| 312 | |
| 313 | static void pipe_initialize(struct r8a66597_ep *ep) |
| 314 | { |
| 315 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 316 | |
| 317 | r8a66597_mdfy(r8a66597, 0, CURPIPE, ep->fifosel); |
| 318 | |
| 319 | r8a66597_write(r8a66597, ACLRM, ep->pipectr); |
| 320 | r8a66597_write(r8a66597, 0, ep->pipectr); |
| 321 | r8a66597_write(r8a66597, SQCLR, ep->pipectr); |
| 322 | if (ep->use_dma) { |
| 323 | r8a66597_mdfy(r8a66597, ep->pipenum, CURPIPE, ep->fifosel); |
| 324 | |
| 325 | ndelay(450); |
| 326 | |
| 327 | r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel); |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | static void r8a66597_ep_setting(struct r8a66597 *r8a66597, |
| 332 | struct r8a66597_ep *ep, |
| 333 | const struct usb_endpoint_descriptor *desc, |
| 334 | u16 pipenum, int dma) |
| 335 | { |
| 336 | ep->use_dma = 0; |
| 337 | ep->fifoaddr = CFIFO; |
| 338 | ep->fifosel = CFIFOSEL; |
| 339 | ep->fifoctr = CFIFOCTR; |
| 340 | ep->fifotrn = 0; |
| 341 | |
| 342 | ep->pipectr = get_pipectr_addr(pipenum); |
| 343 | ep->pipenum = pipenum; |
| 344 | ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
| 345 | r8a66597->pipenum2ep[pipenum] = ep; |
| 346 | r8a66597->epaddr2ep[desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK] |
| 347 | = ep; |
| 348 | INIT_LIST_HEAD(&ep->queue); |
| 349 | } |
| 350 | |
| 351 | static void r8a66597_ep_release(struct r8a66597_ep *ep) |
| 352 | { |
| 353 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 354 | u16 pipenum = ep->pipenum; |
| 355 | |
| 356 | if (pipenum == 0) |
| 357 | return; |
| 358 | |
| 359 | if (ep->use_dma) |
| 360 | r8a66597->num_dma--; |
| 361 | ep->pipenum = 0; |
| 362 | ep->busy = 0; |
| 363 | ep->use_dma = 0; |
| 364 | } |
| 365 | |
| 366 | static int alloc_pipe_config(struct r8a66597_ep *ep, |
| 367 | const struct usb_endpoint_descriptor *desc) |
| 368 | { |
| 369 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 370 | struct r8a66597_pipe_info info; |
| 371 | int dma = 0; |
| 372 | unsigned char *counter; |
| 373 | int ret; |
| 374 | |
| 375 | ep->desc = desc; |
| 376 | |
| 377 | if (ep->pipenum) /* already allocated pipe */ |
| 378 | return 0; |
| 379 | |
| 380 | switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { |
| 381 | case USB_ENDPOINT_XFER_BULK: |
| 382 | if (r8a66597->bulk >= R8A66597_MAX_NUM_BULK) { |
| 383 | if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) { |
| 384 | printk(KERN_ERR "bulk pipe is insufficient\n"); |
| 385 | return -ENODEV; |
| 386 | } else { |
| 387 | info.pipe = R8A66597_BASE_PIPENUM_ISOC |
| 388 | + r8a66597->isochronous; |
| 389 | counter = &r8a66597->isochronous; |
| 390 | } |
| 391 | } else { |
| 392 | info.pipe = R8A66597_BASE_PIPENUM_BULK + r8a66597->bulk; |
| 393 | counter = &r8a66597->bulk; |
| 394 | } |
| 395 | info.type = R8A66597_BULK; |
| 396 | dma = 1; |
| 397 | break; |
| 398 | case USB_ENDPOINT_XFER_INT: |
| 399 | if (r8a66597->interrupt >= R8A66597_MAX_NUM_INT) { |
| 400 | printk(KERN_ERR "interrupt pipe is insufficient\n"); |
| 401 | return -ENODEV; |
| 402 | } |
| 403 | info.pipe = R8A66597_BASE_PIPENUM_INT + r8a66597->interrupt; |
| 404 | info.type = R8A66597_INT; |
| 405 | counter = &r8a66597->interrupt; |
| 406 | break; |
| 407 | case USB_ENDPOINT_XFER_ISOC: |
| 408 | if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) { |
| 409 | printk(KERN_ERR "isochronous pipe is insufficient\n"); |
| 410 | return -ENODEV; |
| 411 | } |
| 412 | info.pipe = R8A66597_BASE_PIPENUM_ISOC + r8a66597->isochronous; |
| 413 | info.type = R8A66597_ISO; |
| 414 | counter = &r8a66597->isochronous; |
| 415 | break; |
| 416 | default: |
| 417 | printk(KERN_ERR "unexpect xfer type\n"); |
| 418 | return -EINVAL; |
| 419 | } |
| 420 | ep->type = info.type; |
| 421 | |
| 422 | info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 423 | info.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
| 424 | info.interval = desc->bInterval; |
| 425 | if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) |
| 426 | info.dir_in = 1; |
| 427 | else |
| 428 | info.dir_in = 0; |
| 429 | |
| 430 | ret = pipe_buffer_setting(r8a66597, &info); |
| 431 | if (ret < 0) { |
| 432 | printk(KERN_ERR "pipe_buffer_setting fail\n"); |
| 433 | return ret; |
| 434 | } |
| 435 | |
| 436 | (*counter)++; |
| 437 | if ((counter == &r8a66597->isochronous) && info.type == R8A66597_BULK) |
| 438 | r8a66597->bulk++; |
| 439 | |
| 440 | r8a66597_ep_setting(r8a66597, ep, desc, info.pipe, dma); |
| 441 | pipe_initialize(ep); |
| 442 | |
| 443 | return 0; |
| 444 | } |
| 445 | |
| 446 | static int free_pipe_config(struct r8a66597_ep *ep) |
| 447 | { |
| 448 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 449 | struct r8a66597_pipe_info info; |
| 450 | |
| 451 | info.pipe = ep->pipenum; |
| 452 | info.type = ep->type; |
| 453 | pipe_buffer_release(r8a66597, &info); |
| 454 | r8a66597_ep_release(ep); |
| 455 | |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | /*-------------------------------------------------------------------------*/ |
| 460 | static void pipe_irq_enable(struct r8a66597 *r8a66597, u16 pipenum) |
| 461 | { |
| 462 | enable_irq_ready(r8a66597, pipenum); |
| 463 | enable_irq_nrdy(r8a66597, pipenum); |
| 464 | } |
| 465 | |
| 466 | static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) |
| 467 | { |
| 468 | disable_irq_ready(r8a66597, pipenum); |
| 469 | disable_irq_nrdy(r8a66597, pipenum); |
| 470 | } |
| 471 | |
| 472 | /* if complete is true, gadget driver complete function is not call */ |
| 473 | static void control_end(struct r8a66597 *r8a66597, unsigned ccpl) |
| 474 | { |
| 475 | r8a66597->ep[0].internal_ccpl = ccpl; |
| 476 | pipe_start(r8a66597, 0); |
| 477 | r8a66597_bset(r8a66597, CCPL, DCPCTR); |
| 478 | } |
| 479 | |
| 480 | static void start_ep0_write(struct r8a66597_ep *ep, |
| 481 | struct r8a66597_request *req) |
| 482 | { |
| 483 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 484 | |
| 485 | pipe_change(r8a66597, ep->pipenum); |
| 486 | r8a66597_mdfy(r8a66597, ISEL, (ISEL | CURPIPE), CFIFOSEL); |
| 487 | r8a66597_write(r8a66597, BCLR, ep->fifoctr); |
| 488 | if (req->req.length == 0) { |
| 489 | r8a66597_bset(r8a66597, BVAL, ep->fifoctr); |
| 490 | pipe_start(r8a66597, 0); |
| 491 | transfer_complete(ep, req, 0); |
| 492 | } else { |
| 493 | r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); |
| 494 | irq_ep0_write(ep, req); |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | static void start_packet_write(struct r8a66597_ep *ep, |
| 499 | struct r8a66597_request *req) |
| 500 | { |
| 501 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 502 | u16 tmp; |
| 503 | |
| 504 | pipe_change(r8a66597, ep->pipenum); |
| 505 | disable_irq_empty(r8a66597, ep->pipenum); |
| 506 | pipe_start(r8a66597, ep->pipenum); |
| 507 | |
| 508 | tmp = r8a66597_read(r8a66597, ep->fifoctr); |
| 509 | if (unlikely((tmp & FRDY) == 0)) |
| 510 | pipe_irq_enable(r8a66597, ep->pipenum); |
| 511 | else |
| 512 | irq_packet_write(ep, req); |
| 513 | } |
| 514 | |
| 515 | static void start_packet_read(struct r8a66597_ep *ep, |
| 516 | struct r8a66597_request *req) |
| 517 | { |
| 518 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 519 | u16 pipenum = ep->pipenum; |
| 520 | |
| 521 | if (ep->pipenum == 0) { |
| 522 | r8a66597_mdfy(r8a66597, 0, (ISEL | CURPIPE), CFIFOSEL); |
| 523 | r8a66597_write(r8a66597, BCLR, ep->fifoctr); |
| 524 | pipe_start(r8a66597, pipenum); |
| 525 | pipe_irq_enable(r8a66597, pipenum); |
| 526 | } else { |
| 527 | if (ep->use_dma) { |
| 528 | r8a66597_bset(r8a66597, TRCLR, ep->fifosel); |
| 529 | pipe_change(r8a66597, pipenum); |
| 530 | r8a66597_bset(r8a66597, TRENB, ep->fifosel); |
| 531 | r8a66597_write(r8a66597, |
| 532 | (req->req.length + ep->ep.maxpacket - 1) |
| 533 | / ep->ep.maxpacket, |
| 534 | ep->fifotrn); |
| 535 | } |
| 536 | pipe_start(r8a66597, pipenum); /* trigger once */ |
| 537 | pipe_irq_enable(r8a66597, pipenum); |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | static void start_packet(struct r8a66597_ep *ep, struct r8a66597_request *req) |
| 542 | { |
| 543 | if (ep->desc->bEndpointAddress & USB_DIR_IN) |
| 544 | start_packet_write(ep, req); |
| 545 | else |
| 546 | start_packet_read(ep, req); |
| 547 | } |
| 548 | |
| 549 | static void start_ep0(struct r8a66597_ep *ep, struct r8a66597_request *req) |
| 550 | { |
| 551 | u16 ctsq; |
| 552 | |
| 553 | ctsq = r8a66597_read(ep->r8a66597, INTSTS0) & CTSQ; |
| 554 | |
| 555 | switch (ctsq) { |
| 556 | case CS_RDDS: |
| 557 | start_ep0_write(ep, req); |
| 558 | break; |
| 559 | case CS_WRDS: |
| 560 | start_packet_read(ep, req); |
| 561 | break; |
| 562 | |
| 563 | case CS_WRND: |
| 564 | control_end(ep->r8a66597, 0); |
| 565 | break; |
| 566 | default: |
| 567 | printk(KERN_ERR "start_ep0: unexpect ctsq(%x)\n", ctsq); |
| 568 | break; |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | static void init_controller(struct r8a66597 *r8a66597) |
| 573 | { |
| 574 | u16 vif = r8a66597->pdata->vif ? LDRV : 0; |
| 575 | u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; |
| 576 | u16 endian = r8a66597->pdata->endian ? BIGEND : 0; |
| 577 | |
| 578 | if (r8a66597->pdata->on_chip) { |
| 579 | r8a66597_bset(r8a66597, 0x04, SYSCFG1); |
| 580 | r8a66597_bset(r8a66597, HSE, SYSCFG0); |
| 581 | |
| 582 | r8a66597_bclr(r8a66597, USBE, SYSCFG0); |
| 583 | r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); |
| 584 | r8a66597_bset(r8a66597, USBE, SYSCFG0); |
| 585 | |
| 586 | r8a66597_bset(r8a66597, SCKE, SYSCFG0); |
| 587 | |
| 588 | r8a66597_bset(r8a66597, irq_sense, INTENB1); |
| 589 | r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, |
| 590 | DMA0CFG); |
| 591 | } else { |
| 592 | r8a66597_bset(r8a66597, vif | endian, PINCFG); |
| 593 | r8a66597_bset(r8a66597, HSE, SYSCFG0); /* High spd */ |
| 594 | r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), |
| 595 | XTAL, SYSCFG0); |
| 596 | |
| 597 | r8a66597_bclr(r8a66597, USBE, SYSCFG0); |
| 598 | r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); |
| 599 | r8a66597_bset(r8a66597, USBE, SYSCFG0); |
| 600 | |
| 601 | r8a66597_bset(r8a66597, XCKE, SYSCFG0); |
| 602 | |
| 603 | msleep(3); |
| 604 | |
| 605 | r8a66597_bset(r8a66597, PLLC, SYSCFG0); |
| 606 | |
| 607 | msleep(1); |
| 608 | |
| 609 | r8a66597_bset(r8a66597, SCKE, SYSCFG0); |
| 610 | |
| 611 | r8a66597_bset(r8a66597, irq_sense, INTENB1); |
| 612 | r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, |
| 613 | DMA0CFG); |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | static void disable_controller(struct r8a66597 *r8a66597) |
| 618 | { |
| 619 | if (r8a66597->pdata->on_chip) { |
| 620 | r8a66597_bset(r8a66597, SCKE, SYSCFG0); |
| 621 | |
Magnus Damm | 0bb886d | 2009-08-19 14:26:10 +0000 | [diff] [blame] | 622 | /* disable interrupts */ |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 623 | r8a66597_write(r8a66597, 0, INTENB0); |
| 624 | r8a66597_write(r8a66597, 0, INTENB1); |
Magnus Damm | 0bb886d | 2009-08-19 14:26:10 +0000 | [diff] [blame] | 625 | r8a66597_write(r8a66597, 0, BRDYENB); |
| 626 | r8a66597_write(r8a66597, 0, BEMPENB); |
| 627 | r8a66597_write(r8a66597, 0, NRDYENB); |
| 628 | |
| 629 | /* clear status */ |
| 630 | r8a66597_write(r8a66597, 0, BRDYSTS); |
| 631 | r8a66597_write(r8a66597, 0, NRDYSTS); |
| 632 | r8a66597_write(r8a66597, 0, BEMPSTS); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 633 | |
| 634 | r8a66597_bclr(r8a66597, USBE, SYSCFG0); |
| 635 | r8a66597_bclr(r8a66597, SCKE, SYSCFG0); |
| 636 | |
| 637 | } else { |
| 638 | r8a66597_bclr(r8a66597, SCKE, SYSCFG0); |
| 639 | udelay(1); |
| 640 | r8a66597_bclr(r8a66597, PLLC, SYSCFG0); |
| 641 | udelay(1); |
| 642 | udelay(1); |
| 643 | r8a66597_bclr(r8a66597, XCKE, SYSCFG0); |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | static void r8a66597_start_xclock(struct r8a66597 *r8a66597) |
| 648 | { |
| 649 | u16 tmp; |
| 650 | |
| 651 | if (!r8a66597->pdata->on_chip) { |
| 652 | tmp = r8a66597_read(r8a66597, SYSCFG0); |
| 653 | if (!(tmp & XCKE)) |
| 654 | r8a66597_bset(r8a66597, XCKE, SYSCFG0); |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | static struct r8a66597_request *get_request_from_ep(struct r8a66597_ep *ep) |
| 659 | { |
| 660 | return list_entry(ep->queue.next, struct r8a66597_request, queue); |
| 661 | } |
| 662 | |
| 663 | /*-------------------------------------------------------------------------*/ |
| 664 | static void transfer_complete(struct r8a66597_ep *ep, |
| 665 | struct r8a66597_request *req, int status) |
| 666 | __releases(r8a66597->lock) |
| 667 | __acquires(r8a66597->lock) |
| 668 | { |
| 669 | int restart = 0; |
| 670 | |
| 671 | if (unlikely(ep->pipenum == 0)) { |
| 672 | if (ep->internal_ccpl) { |
| 673 | ep->internal_ccpl = 0; |
| 674 | return; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | list_del_init(&req->queue); |
| 679 | if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN) |
| 680 | req->req.status = -ESHUTDOWN; |
| 681 | else |
| 682 | req->req.status = status; |
| 683 | |
| 684 | if (!list_empty(&ep->queue)) |
| 685 | restart = 1; |
| 686 | |
| 687 | spin_unlock(&ep->r8a66597->lock); |
| 688 | req->req.complete(&ep->ep, &req->req); |
| 689 | spin_lock(&ep->r8a66597->lock); |
| 690 | |
| 691 | if (restart) { |
| 692 | req = get_request_from_ep(ep); |
| 693 | if (ep->desc) |
| 694 | start_packet(ep, req); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req) |
| 699 | { |
| 700 | int i; |
| 701 | u16 tmp; |
| 702 | unsigned bufsize; |
| 703 | size_t size; |
| 704 | void *buf; |
| 705 | u16 pipenum = ep->pipenum; |
| 706 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 707 | |
| 708 | pipe_change(r8a66597, pipenum); |
| 709 | r8a66597_bset(r8a66597, ISEL, ep->fifosel); |
| 710 | |
| 711 | i = 0; |
| 712 | do { |
| 713 | tmp = r8a66597_read(r8a66597, ep->fifoctr); |
| 714 | if (i++ > 100000) { |
| 715 | printk(KERN_ERR "pipe0 is busy. maybe cpu i/o bus" |
| 716 | "conflict. please power off this controller."); |
| 717 | return; |
| 718 | } |
| 719 | ndelay(1); |
| 720 | } while ((tmp & FRDY) == 0); |
| 721 | |
| 722 | /* prepare parameters */ |
| 723 | bufsize = get_buffer_size(r8a66597, pipenum); |
| 724 | buf = req->req.buf + req->req.actual; |
| 725 | size = min(bufsize, req->req.length - req->req.actual); |
| 726 | |
| 727 | /* write fifo */ |
| 728 | if (req->req.buf) { |
| 729 | if (size > 0) |
| 730 | r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size); |
| 731 | if ((size == 0) || ((size % ep->ep.maxpacket) != 0)) |
| 732 | r8a66597_bset(r8a66597, BVAL, ep->fifoctr); |
| 733 | } |
| 734 | |
| 735 | /* update parameters */ |
| 736 | req->req.actual += size; |
| 737 | |
| 738 | /* check transfer finish */ |
| 739 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 740 | || (size % ep->ep.maxpacket) |
| 741 | || (size == 0)) { |
| 742 | disable_irq_ready(r8a66597, pipenum); |
| 743 | disable_irq_empty(r8a66597, pipenum); |
| 744 | } else { |
| 745 | disable_irq_ready(r8a66597, pipenum); |
| 746 | enable_irq_empty(r8a66597, pipenum); |
| 747 | } |
| 748 | pipe_start(r8a66597, pipenum); |
| 749 | } |
| 750 | |
| 751 | static void irq_packet_write(struct r8a66597_ep *ep, |
| 752 | struct r8a66597_request *req) |
| 753 | { |
| 754 | u16 tmp; |
| 755 | unsigned bufsize; |
| 756 | size_t size; |
| 757 | void *buf; |
| 758 | u16 pipenum = ep->pipenum; |
| 759 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 760 | |
| 761 | pipe_change(r8a66597, pipenum); |
| 762 | tmp = r8a66597_read(r8a66597, ep->fifoctr); |
| 763 | if (unlikely((tmp & FRDY) == 0)) { |
| 764 | pipe_stop(r8a66597, pipenum); |
| 765 | pipe_irq_disable(r8a66597, pipenum); |
| 766 | printk(KERN_ERR "write fifo not ready. pipnum=%d\n", pipenum); |
| 767 | return; |
| 768 | } |
| 769 | |
| 770 | /* prepare parameters */ |
| 771 | bufsize = get_buffer_size(r8a66597, pipenum); |
| 772 | buf = req->req.buf + req->req.actual; |
| 773 | size = min(bufsize, req->req.length - req->req.actual); |
| 774 | |
| 775 | /* write fifo */ |
| 776 | if (req->req.buf) { |
| 777 | r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size); |
| 778 | if ((size == 0) |
| 779 | || ((size % ep->ep.maxpacket) != 0) |
| 780 | || ((bufsize != ep->ep.maxpacket) |
| 781 | && (bufsize > size))) |
| 782 | r8a66597_bset(r8a66597, BVAL, ep->fifoctr); |
| 783 | } |
| 784 | |
| 785 | /* update parameters */ |
| 786 | req->req.actual += size; |
| 787 | /* check transfer finish */ |
| 788 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 789 | || (size % ep->ep.maxpacket) |
| 790 | || (size == 0)) { |
| 791 | disable_irq_ready(r8a66597, pipenum); |
| 792 | enable_irq_empty(r8a66597, pipenum); |
| 793 | } else { |
| 794 | disable_irq_empty(r8a66597, pipenum); |
| 795 | pipe_irq_enable(r8a66597, pipenum); |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | static void irq_packet_read(struct r8a66597_ep *ep, |
| 800 | struct r8a66597_request *req) |
| 801 | { |
| 802 | u16 tmp; |
| 803 | int rcv_len, bufsize, req_len; |
| 804 | int size; |
| 805 | void *buf; |
| 806 | u16 pipenum = ep->pipenum; |
| 807 | struct r8a66597 *r8a66597 = ep->r8a66597; |
| 808 | int finish = 0; |
| 809 | |
| 810 | pipe_change(r8a66597, pipenum); |
| 811 | tmp = r8a66597_read(r8a66597, ep->fifoctr); |
| 812 | if (unlikely((tmp & FRDY) == 0)) { |
| 813 | req->req.status = -EPIPE; |
| 814 | pipe_stop(r8a66597, pipenum); |
| 815 | pipe_irq_disable(r8a66597, pipenum); |
| 816 | printk(KERN_ERR "read fifo not ready"); |
| 817 | return; |
| 818 | } |
| 819 | |
| 820 | /* prepare parameters */ |
| 821 | rcv_len = tmp & DTLN; |
| 822 | bufsize = get_buffer_size(r8a66597, pipenum); |
| 823 | |
| 824 | buf = req->req.buf + req->req.actual; |
| 825 | req_len = req->req.length - req->req.actual; |
| 826 | if (rcv_len < bufsize) |
| 827 | size = min(rcv_len, req_len); |
| 828 | else |
| 829 | size = min(bufsize, req_len); |
| 830 | |
| 831 | /* update parameters */ |
| 832 | req->req.actual += size; |
| 833 | |
| 834 | /* check transfer finish */ |
| 835 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 836 | || (size % ep->ep.maxpacket) |
| 837 | || (size == 0)) { |
| 838 | pipe_stop(r8a66597, pipenum); |
| 839 | pipe_irq_disable(r8a66597, pipenum); |
| 840 | finish = 1; |
| 841 | } |
| 842 | |
| 843 | /* read fifo */ |
| 844 | if (req->req.buf) { |
| 845 | if (size == 0) |
| 846 | r8a66597_write(r8a66597, BCLR, ep->fifoctr); |
| 847 | else |
| 848 | r8a66597_read_fifo(r8a66597, ep->fifoaddr, buf, size); |
| 849 | |
| 850 | } |
| 851 | |
| 852 | if ((ep->pipenum != 0) && finish) |
| 853 | transfer_complete(ep, req, 0); |
| 854 | } |
| 855 | |
| 856 | static void irq_pipe_ready(struct r8a66597 *r8a66597, u16 status, u16 enb) |
| 857 | { |
| 858 | u16 check; |
| 859 | u16 pipenum; |
| 860 | struct r8a66597_ep *ep; |
| 861 | struct r8a66597_request *req; |
| 862 | |
| 863 | if ((status & BRDY0) && (enb & BRDY0)) { |
| 864 | r8a66597_write(r8a66597, ~BRDY0, BRDYSTS); |
| 865 | r8a66597_mdfy(r8a66597, 0, CURPIPE, CFIFOSEL); |
| 866 | |
| 867 | ep = &r8a66597->ep[0]; |
| 868 | req = get_request_from_ep(ep); |
| 869 | irq_packet_read(ep, req); |
| 870 | } else { |
| 871 | for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { |
| 872 | check = 1 << pipenum; |
| 873 | if ((status & check) && (enb & check)) { |
| 874 | r8a66597_write(r8a66597, ~check, BRDYSTS); |
| 875 | ep = r8a66597->pipenum2ep[pipenum]; |
| 876 | req = get_request_from_ep(ep); |
| 877 | if (ep->desc->bEndpointAddress & USB_DIR_IN) |
| 878 | irq_packet_write(ep, req); |
| 879 | else |
| 880 | irq_packet_read(ep, req); |
| 881 | } |
| 882 | } |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | static void irq_pipe_empty(struct r8a66597 *r8a66597, u16 status, u16 enb) |
| 887 | { |
| 888 | u16 tmp; |
| 889 | u16 check; |
| 890 | u16 pipenum; |
| 891 | struct r8a66597_ep *ep; |
| 892 | struct r8a66597_request *req; |
| 893 | |
| 894 | if ((status & BEMP0) && (enb & BEMP0)) { |
| 895 | r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); |
| 896 | |
| 897 | ep = &r8a66597->ep[0]; |
| 898 | req = get_request_from_ep(ep); |
| 899 | irq_ep0_write(ep, req); |
| 900 | } else { |
| 901 | for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { |
| 902 | check = 1 << pipenum; |
| 903 | if ((status & check) && (enb & check)) { |
| 904 | r8a66597_write(r8a66597, ~check, BEMPSTS); |
| 905 | tmp = control_reg_get(r8a66597, pipenum); |
| 906 | if ((tmp & INBUFM) == 0) { |
| 907 | disable_irq_empty(r8a66597, pipenum); |
| 908 | pipe_irq_disable(r8a66597, pipenum); |
| 909 | pipe_stop(r8a66597, pipenum); |
| 910 | ep = r8a66597->pipenum2ep[pipenum]; |
| 911 | req = get_request_from_ep(ep); |
| 912 | if (!list_empty(&ep->queue)) |
| 913 | transfer_complete(ep, req, 0); |
| 914 | } |
| 915 | } |
| 916 | } |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | static void get_status(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) |
| 921 | __releases(r8a66597->lock) |
| 922 | __acquires(r8a66597->lock) |
| 923 | { |
| 924 | struct r8a66597_ep *ep; |
| 925 | u16 pid; |
| 926 | u16 status = 0; |
| 927 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
| 928 | |
| 929 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 930 | case USB_RECIP_DEVICE: |
| 931 | status = 1 << USB_DEVICE_SELF_POWERED; |
| 932 | break; |
| 933 | case USB_RECIP_INTERFACE: |
| 934 | status = 0; |
| 935 | break; |
| 936 | case USB_RECIP_ENDPOINT: |
| 937 | ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
| 938 | pid = control_reg_get_pid(r8a66597, ep->pipenum); |
| 939 | if (pid == PID_STALL) |
| 940 | status = 1 << USB_ENDPOINT_HALT; |
| 941 | else |
| 942 | status = 0; |
| 943 | break; |
| 944 | default: |
| 945 | pipe_stall(r8a66597, 0); |
| 946 | return; /* exit */ |
| 947 | } |
| 948 | |
| 949 | r8a66597->ep0_data = cpu_to_le16(status); |
| 950 | r8a66597->ep0_req->buf = &r8a66597->ep0_data; |
| 951 | r8a66597->ep0_req->length = 2; |
| 952 | /* AV: what happens if we get called again before that gets through? */ |
| 953 | spin_unlock(&r8a66597->lock); |
| 954 | r8a66597_queue(r8a66597->gadget.ep0, r8a66597->ep0_req, GFP_KERNEL); |
| 955 | spin_lock(&r8a66597->lock); |
| 956 | } |
| 957 | |
| 958 | static void clear_feature(struct r8a66597 *r8a66597, |
| 959 | struct usb_ctrlrequest *ctrl) |
| 960 | { |
| 961 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 962 | case USB_RECIP_DEVICE: |
| 963 | control_end(r8a66597, 1); |
| 964 | break; |
| 965 | case USB_RECIP_INTERFACE: |
| 966 | control_end(r8a66597, 1); |
| 967 | break; |
| 968 | case USB_RECIP_ENDPOINT: { |
| 969 | struct r8a66597_ep *ep; |
| 970 | struct r8a66597_request *req; |
| 971 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
| 972 | |
| 973 | ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 9e7291c | 2009-08-20 07:01:06 +0000 | [diff] [blame] | 974 | if (!ep->wedge) { |
| 975 | pipe_stop(r8a66597, ep->pipenum); |
| 976 | control_reg_sqclr(r8a66597, ep->pipenum); |
| 977 | spin_unlock(&r8a66597->lock); |
| 978 | usb_ep_clear_halt(&ep->ep); |
| 979 | spin_lock(&r8a66597->lock); |
| 980 | } |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 981 | |
| 982 | control_end(r8a66597, 1); |
| 983 | |
| 984 | req = get_request_from_ep(ep); |
| 985 | if (ep->busy) { |
| 986 | ep->busy = 0; |
| 987 | if (list_empty(&ep->queue)) |
| 988 | break; |
| 989 | start_packet(ep, req); |
| 990 | } else if (!list_empty(&ep->queue)) |
| 991 | pipe_start(r8a66597, ep->pipenum); |
| 992 | } |
| 993 | break; |
| 994 | default: |
| 995 | pipe_stall(r8a66597, 0); |
| 996 | break; |
| 997 | } |
| 998 | } |
| 999 | |
| 1000 | static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) |
| 1001 | { |
| 1002 | |
| 1003 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 1004 | case USB_RECIP_DEVICE: |
| 1005 | control_end(r8a66597, 1); |
| 1006 | break; |
| 1007 | case USB_RECIP_INTERFACE: |
| 1008 | control_end(r8a66597, 1); |
| 1009 | break; |
| 1010 | case USB_RECIP_ENDPOINT: { |
| 1011 | struct r8a66597_ep *ep; |
| 1012 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
| 1013 | |
| 1014 | ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
| 1015 | pipe_stall(r8a66597, ep->pipenum); |
| 1016 | |
| 1017 | control_end(r8a66597, 1); |
| 1018 | } |
| 1019 | break; |
| 1020 | default: |
| 1021 | pipe_stall(r8a66597, 0); |
| 1022 | break; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | /* if return value is true, call class driver's setup() */ |
| 1027 | static int setup_packet(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) |
| 1028 | { |
| 1029 | u16 *p = (u16 *)ctrl; |
| 1030 | unsigned long offset = USBREQ; |
| 1031 | int i, ret = 0; |
| 1032 | |
| 1033 | /* read fifo */ |
| 1034 | r8a66597_write(r8a66597, ~VALID, INTSTS0); |
| 1035 | |
| 1036 | for (i = 0; i < 4; i++) |
| 1037 | p[i] = r8a66597_read(r8a66597, offset + i*2); |
| 1038 | |
| 1039 | /* check request */ |
| 1040 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
| 1041 | switch (ctrl->bRequest) { |
| 1042 | case USB_REQ_GET_STATUS: |
| 1043 | get_status(r8a66597, ctrl); |
| 1044 | break; |
| 1045 | case USB_REQ_CLEAR_FEATURE: |
| 1046 | clear_feature(r8a66597, ctrl); |
| 1047 | break; |
| 1048 | case USB_REQ_SET_FEATURE: |
| 1049 | set_feature(r8a66597, ctrl); |
| 1050 | break; |
| 1051 | default: |
| 1052 | ret = 1; |
| 1053 | break; |
| 1054 | } |
| 1055 | } else |
| 1056 | ret = 1; |
| 1057 | return ret; |
| 1058 | } |
| 1059 | |
| 1060 | static void r8a66597_update_usb_speed(struct r8a66597 *r8a66597) |
| 1061 | { |
| 1062 | u16 speed = get_usb_speed(r8a66597); |
| 1063 | |
| 1064 | switch (speed) { |
| 1065 | case HSMODE: |
| 1066 | r8a66597->gadget.speed = USB_SPEED_HIGH; |
| 1067 | break; |
| 1068 | case FSMODE: |
| 1069 | r8a66597->gadget.speed = USB_SPEED_FULL; |
| 1070 | break; |
| 1071 | default: |
| 1072 | r8a66597->gadget.speed = USB_SPEED_UNKNOWN; |
| 1073 | printk(KERN_ERR "USB speed unknown\n"); |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | static void irq_device_state(struct r8a66597 *r8a66597) |
| 1078 | { |
| 1079 | u16 dvsq; |
| 1080 | |
| 1081 | dvsq = r8a66597_read(r8a66597, INTSTS0) & DVSQ; |
| 1082 | r8a66597_write(r8a66597, ~DVST, INTSTS0); |
| 1083 | |
| 1084 | if (dvsq == DS_DFLT) { |
| 1085 | /* bus reset */ |
| 1086 | r8a66597->driver->disconnect(&r8a66597->gadget); |
| 1087 | r8a66597_update_usb_speed(r8a66597); |
| 1088 | } |
| 1089 | if (r8a66597->old_dvsq == DS_CNFG && dvsq != DS_CNFG) |
| 1090 | r8a66597_update_usb_speed(r8a66597); |
| 1091 | if ((dvsq == DS_CNFG || dvsq == DS_ADDS) |
| 1092 | && r8a66597->gadget.speed == USB_SPEED_UNKNOWN) |
| 1093 | r8a66597_update_usb_speed(r8a66597); |
| 1094 | |
| 1095 | r8a66597->old_dvsq = dvsq; |
| 1096 | } |
| 1097 | |
| 1098 | static void irq_control_stage(struct r8a66597 *r8a66597) |
| 1099 | __releases(r8a66597->lock) |
| 1100 | __acquires(r8a66597->lock) |
| 1101 | { |
| 1102 | struct usb_ctrlrequest ctrl; |
| 1103 | u16 ctsq; |
| 1104 | |
| 1105 | ctsq = r8a66597_read(r8a66597, INTSTS0) & CTSQ; |
| 1106 | r8a66597_write(r8a66597, ~CTRT, INTSTS0); |
| 1107 | |
| 1108 | switch (ctsq) { |
| 1109 | case CS_IDST: { |
| 1110 | struct r8a66597_ep *ep; |
| 1111 | struct r8a66597_request *req; |
| 1112 | ep = &r8a66597->ep[0]; |
| 1113 | req = get_request_from_ep(ep); |
| 1114 | transfer_complete(ep, req, 0); |
| 1115 | } |
| 1116 | break; |
| 1117 | |
| 1118 | case CS_RDDS: |
| 1119 | case CS_WRDS: |
| 1120 | case CS_WRND: |
| 1121 | if (setup_packet(r8a66597, &ctrl)) { |
| 1122 | spin_unlock(&r8a66597->lock); |
| 1123 | if (r8a66597->driver->setup(&r8a66597->gadget, &ctrl) |
| 1124 | < 0) |
| 1125 | pipe_stall(r8a66597, 0); |
| 1126 | spin_lock(&r8a66597->lock); |
| 1127 | } |
| 1128 | break; |
| 1129 | case CS_RDSS: |
| 1130 | case CS_WRSS: |
| 1131 | control_end(r8a66597, 0); |
| 1132 | break; |
| 1133 | default: |
| 1134 | printk(KERN_ERR "ctrl_stage: unexpect ctsq(%x)\n", ctsq); |
| 1135 | break; |
| 1136 | } |
| 1137 | } |
| 1138 | |
| 1139 | static irqreturn_t r8a66597_irq(int irq, void *_r8a66597) |
| 1140 | { |
| 1141 | struct r8a66597 *r8a66597 = _r8a66597; |
| 1142 | u16 intsts0; |
| 1143 | u16 intenb0; |
| 1144 | u16 brdysts, nrdysts, bempsts; |
| 1145 | u16 brdyenb, nrdyenb, bempenb; |
| 1146 | u16 savepipe; |
| 1147 | u16 mask0; |
| 1148 | |
| 1149 | spin_lock(&r8a66597->lock); |
| 1150 | |
| 1151 | intsts0 = r8a66597_read(r8a66597, INTSTS0); |
| 1152 | intenb0 = r8a66597_read(r8a66597, INTENB0); |
| 1153 | |
| 1154 | savepipe = r8a66597_read(r8a66597, CFIFOSEL); |
| 1155 | |
| 1156 | mask0 = intsts0 & intenb0; |
| 1157 | if (mask0) { |
| 1158 | brdysts = r8a66597_read(r8a66597, BRDYSTS); |
| 1159 | nrdysts = r8a66597_read(r8a66597, NRDYSTS); |
| 1160 | bempsts = r8a66597_read(r8a66597, BEMPSTS); |
| 1161 | brdyenb = r8a66597_read(r8a66597, BRDYENB); |
| 1162 | nrdyenb = r8a66597_read(r8a66597, NRDYENB); |
| 1163 | bempenb = r8a66597_read(r8a66597, BEMPENB); |
| 1164 | |
| 1165 | if (mask0 & VBINT) { |
| 1166 | r8a66597_write(r8a66597, 0xffff & ~VBINT, |
| 1167 | INTSTS0); |
| 1168 | r8a66597_start_xclock(r8a66597); |
| 1169 | |
| 1170 | /* start vbus sampling */ |
| 1171 | r8a66597->old_vbus = r8a66597_read(r8a66597, INTSTS0) |
| 1172 | & VBSTS; |
| 1173 | r8a66597->scount = R8A66597_MAX_SAMPLING; |
| 1174 | |
| 1175 | mod_timer(&r8a66597->timer, |
| 1176 | jiffies + msecs_to_jiffies(50)); |
| 1177 | } |
| 1178 | if (intsts0 & DVSQ) |
| 1179 | irq_device_state(r8a66597); |
| 1180 | |
| 1181 | if ((intsts0 & BRDY) && (intenb0 & BRDYE) |
| 1182 | && (brdysts & brdyenb)) |
| 1183 | irq_pipe_ready(r8a66597, brdysts, brdyenb); |
| 1184 | if ((intsts0 & BEMP) && (intenb0 & BEMPE) |
| 1185 | && (bempsts & bempenb)) |
| 1186 | irq_pipe_empty(r8a66597, bempsts, bempenb); |
| 1187 | |
| 1188 | if (intsts0 & CTRT) |
| 1189 | irq_control_stage(r8a66597); |
| 1190 | } |
| 1191 | |
| 1192 | r8a66597_write(r8a66597, savepipe, CFIFOSEL); |
| 1193 | |
| 1194 | spin_unlock(&r8a66597->lock); |
| 1195 | return IRQ_HANDLED; |
| 1196 | } |
| 1197 | |
| 1198 | static void r8a66597_timer(unsigned long _r8a66597) |
| 1199 | { |
| 1200 | struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; |
| 1201 | unsigned long flags; |
| 1202 | u16 tmp; |
| 1203 | |
| 1204 | spin_lock_irqsave(&r8a66597->lock, flags); |
| 1205 | tmp = r8a66597_read(r8a66597, SYSCFG0); |
| 1206 | if (r8a66597->scount > 0) { |
| 1207 | tmp = r8a66597_read(r8a66597, INTSTS0) & VBSTS; |
| 1208 | if (tmp == r8a66597->old_vbus) { |
| 1209 | r8a66597->scount--; |
| 1210 | if (r8a66597->scount == 0) { |
| 1211 | if (tmp == VBSTS) |
| 1212 | r8a66597_usb_connect(r8a66597); |
| 1213 | else |
| 1214 | r8a66597_usb_disconnect(r8a66597); |
| 1215 | } else { |
| 1216 | mod_timer(&r8a66597->timer, |
| 1217 | jiffies + msecs_to_jiffies(50)); |
| 1218 | } |
| 1219 | } else { |
| 1220 | r8a66597->scount = R8A66597_MAX_SAMPLING; |
| 1221 | r8a66597->old_vbus = tmp; |
| 1222 | mod_timer(&r8a66597->timer, |
| 1223 | jiffies + msecs_to_jiffies(50)); |
| 1224 | } |
| 1225 | } |
| 1226 | spin_unlock_irqrestore(&r8a66597->lock, flags); |
| 1227 | } |
| 1228 | |
| 1229 | /*-------------------------------------------------------------------------*/ |
| 1230 | static int r8a66597_enable(struct usb_ep *_ep, |
| 1231 | const struct usb_endpoint_descriptor *desc) |
| 1232 | { |
| 1233 | struct r8a66597_ep *ep; |
| 1234 | |
| 1235 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1236 | return alloc_pipe_config(ep, desc); |
| 1237 | } |
| 1238 | |
| 1239 | static int r8a66597_disable(struct usb_ep *_ep) |
| 1240 | { |
| 1241 | struct r8a66597_ep *ep; |
| 1242 | struct r8a66597_request *req; |
| 1243 | unsigned long flags; |
| 1244 | |
| 1245 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1246 | BUG_ON(!ep); |
| 1247 | |
| 1248 | while (!list_empty(&ep->queue)) { |
| 1249 | req = get_request_from_ep(ep); |
| 1250 | spin_lock_irqsave(&ep->r8a66597->lock, flags); |
| 1251 | transfer_complete(ep, req, -ECONNRESET); |
| 1252 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); |
| 1253 | } |
| 1254 | |
| 1255 | pipe_irq_disable(ep->r8a66597, ep->pipenum); |
| 1256 | return free_pipe_config(ep); |
| 1257 | } |
| 1258 | |
| 1259 | static struct usb_request *r8a66597_alloc_request(struct usb_ep *_ep, |
| 1260 | gfp_t gfp_flags) |
| 1261 | { |
| 1262 | struct r8a66597_request *req; |
| 1263 | |
| 1264 | req = kzalloc(sizeof(struct r8a66597_request), gfp_flags); |
| 1265 | if (!req) |
| 1266 | return NULL; |
| 1267 | |
| 1268 | INIT_LIST_HEAD(&req->queue); |
| 1269 | |
| 1270 | return &req->req; |
| 1271 | } |
| 1272 | |
| 1273 | static void r8a66597_free_request(struct usb_ep *_ep, struct usb_request *_req) |
| 1274 | { |
| 1275 | struct r8a66597_request *req; |
| 1276 | |
| 1277 | req = container_of(_req, struct r8a66597_request, req); |
| 1278 | kfree(req); |
| 1279 | } |
| 1280 | |
| 1281 | static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 1282 | gfp_t gfp_flags) |
| 1283 | { |
| 1284 | struct r8a66597_ep *ep; |
| 1285 | struct r8a66597_request *req; |
| 1286 | unsigned long flags; |
| 1287 | int request = 0; |
| 1288 | |
| 1289 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1290 | req = container_of(_req, struct r8a66597_request, req); |
| 1291 | |
| 1292 | if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN) |
| 1293 | return -ESHUTDOWN; |
| 1294 | |
| 1295 | spin_lock_irqsave(&ep->r8a66597->lock, flags); |
| 1296 | |
| 1297 | if (list_empty(&ep->queue)) |
| 1298 | request = 1; |
| 1299 | |
| 1300 | list_add_tail(&req->queue, &ep->queue); |
| 1301 | req->req.actual = 0; |
| 1302 | req->req.status = -EINPROGRESS; |
| 1303 | |
| 1304 | if (ep->desc == NULL) /* control */ |
| 1305 | start_ep0(ep, req); |
| 1306 | else { |
| 1307 | if (request && !ep->busy) |
| 1308 | start_packet(ep, req); |
| 1309 | } |
| 1310 | |
| 1311 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); |
| 1312 | |
| 1313 | return 0; |
| 1314 | } |
| 1315 | |
| 1316 | static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
| 1317 | { |
| 1318 | struct r8a66597_ep *ep; |
| 1319 | struct r8a66597_request *req; |
| 1320 | unsigned long flags; |
| 1321 | |
| 1322 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1323 | req = container_of(_req, struct r8a66597_request, req); |
| 1324 | |
| 1325 | spin_lock_irqsave(&ep->r8a66597->lock, flags); |
| 1326 | if (!list_empty(&ep->queue)) |
| 1327 | transfer_complete(ep, req, -ECONNRESET); |
| 1328 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); |
| 1329 | |
| 1330 | return 0; |
| 1331 | } |
| 1332 | |
| 1333 | static int r8a66597_set_halt(struct usb_ep *_ep, int value) |
| 1334 | { |
| 1335 | struct r8a66597_ep *ep; |
| 1336 | struct r8a66597_request *req; |
| 1337 | unsigned long flags; |
| 1338 | int ret = 0; |
| 1339 | |
| 1340 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1341 | req = get_request_from_ep(ep); |
| 1342 | |
| 1343 | spin_lock_irqsave(&ep->r8a66597->lock, flags); |
| 1344 | if (!list_empty(&ep->queue)) { |
| 1345 | ret = -EAGAIN; |
| 1346 | goto out; |
| 1347 | } |
| 1348 | if (value) { |
| 1349 | ep->busy = 1; |
| 1350 | pipe_stall(ep->r8a66597, ep->pipenum); |
| 1351 | } else { |
| 1352 | ep->busy = 0; |
Yoshihiro Shimoda | 9e7291c | 2009-08-20 07:01:06 +0000 | [diff] [blame] | 1353 | ep->wedge = 0; |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1354 | pipe_stop(ep->r8a66597, ep->pipenum); |
| 1355 | } |
| 1356 | |
| 1357 | out: |
| 1358 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); |
| 1359 | return ret; |
| 1360 | } |
| 1361 | |
Yoshihiro Shimoda | 9e7291c | 2009-08-20 07:01:06 +0000 | [diff] [blame] | 1362 | static int r8a66597_set_wedge(struct usb_ep *_ep) |
| 1363 | { |
| 1364 | struct r8a66597_ep *ep; |
| 1365 | unsigned long flags; |
| 1366 | |
| 1367 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1368 | |
| 1369 | if (!ep || !ep->desc) |
| 1370 | return -EINVAL; |
| 1371 | |
| 1372 | spin_lock_irqsave(&ep->r8a66597->lock, flags); |
| 1373 | ep->wedge = 1; |
| 1374 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); |
| 1375 | |
| 1376 | return usb_ep_set_halt(_ep); |
| 1377 | } |
| 1378 | |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1379 | static void r8a66597_fifo_flush(struct usb_ep *_ep) |
| 1380 | { |
| 1381 | struct r8a66597_ep *ep; |
| 1382 | unsigned long flags; |
| 1383 | |
| 1384 | ep = container_of(_ep, struct r8a66597_ep, ep); |
| 1385 | spin_lock_irqsave(&ep->r8a66597->lock, flags); |
| 1386 | if (list_empty(&ep->queue) && !ep->busy) { |
| 1387 | pipe_stop(ep->r8a66597, ep->pipenum); |
| 1388 | r8a66597_bclr(ep->r8a66597, BCLR, ep->fifoctr); |
| 1389 | } |
| 1390 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); |
| 1391 | } |
| 1392 | |
| 1393 | static struct usb_ep_ops r8a66597_ep_ops = { |
| 1394 | .enable = r8a66597_enable, |
| 1395 | .disable = r8a66597_disable, |
| 1396 | |
| 1397 | .alloc_request = r8a66597_alloc_request, |
| 1398 | .free_request = r8a66597_free_request, |
| 1399 | |
| 1400 | .queue = r8a66597_queue, |
| 1401 | .dequeue = r8a66597_dequeue, |
| 1402 | |
| 1403 | .set_halt = r8a66597_set_halt, |
Yoshihiro Shimoda | 9e7291c | 2009-08-20 07:01:06 +0000 | [diff] [blame] | 1404 | .set_wedge = r8a66597_set_wedge, |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1405 | .fifo_flush = r8a66597_fifo_flush, |
| 1406 | }; |
| 1407 | |
| 1408 | /*-------------------------------------------------------------------------*/ |
| 1409 | static struct r8a66597 *the_controller; |
| 1410 | |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 1411 | int usb_gadget_probe_driver(struct usb_gadget_driver *driver, |
| 1412 | int (*bind)(struct usb_gadget *)) |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1413 | { |
| 1414 | struct r8a66597 *r8a66597 = the_controller; |
| 1415 | int retval; |
| 1416 | |
| 1417 | if (!driver |
| 1418 | || driver->speed != USB_SPEED_HIGH |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 1419 | || !bind |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1420 | || !driver->setup) |
| 1421 | return -EINVAL; |
| 1422 | if (!r8a66597) |
| 1423 | return -ENODEV; |
| 1424 | if (r8a66597->driver) |
| 1425 | return -EBUSY; |
| 1426 | |
| 1427 | /* hook up the driver */ |
| 1428 | driver->driver.bus = NULL; |
| 1429 | r8a66597->driver = driver; |
| 1430 | r8a66597->gadget.dev.driver = &driver->driver; |
| 1431 | |
| 1432 | retval = device_add(&r8a66597->gadget.dev); |
| 1433 | if (retval) { |
| 1434 | printk(KERN_ERR "device_add error (%d)\n", retval); |
| 1435 | goto error; |
| 1436 | } |
| 1437 | |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 1438 | retval = bind(&r8a66597->gadget); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1439 | if (retval) { |
| 1440 | printk(KERN_ERR "bind to driver error (%d)\n", retval); |
| 1441 | device_del(&r8a66597->gadget.dev); |
| 1442 | goto error; |
| 1443 | } |
| 1444 | |
| 1445 | r8a66597_bset(r8a66597, VBSE, INTENB0); |
| 1446 | if (r8a66597_read(r8a66597, INTSTS0) & VBSTS) { |
| 1447 | r8a66597_start_xclock(r8a66597); |
| 1448 | /* start vbus sampling */ |
| 1449 | r8a66597->old_vbus = r8a66597_read(r8a66597, |
| 1450 | INTSTS0) & VBSTS; |
| 1451 | r8a66597->scount = R8A66597_MAX_SAMPLING; |
| 1452 | mod_timer(&r8a66597->timer, jiffies + msecs_to_jiffies(50)); |
| 1453 | } |
| 1454 | |
| 1455 | return 0; |
| 1456 | |
| 1457 | error: |
| 1458 | r8a66597->driver = NULL; |
| 1459 | r8a66597->gadget.dev.driver = NULL; |
| 1460 | |
| 1461 | return retval; |
| 1462 | } |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 1463 | EXPORT_SYMBOL(usb_gadget_probe_driver); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1464 | |
| 1465 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) |
| 1466 | { |
| 1467 | struct r8a66597 *r8a66597 = the_controller; |
| 1468 | unsigned long flags; |
| 1469 | |
| 1470 | if (driver != r8a66597->driver || !driver->unbind) |
| 1471 | return -EINVAL; |
| 1472 | |
| 1473 | spin_lock_irqsave(&r8a66597->lock, flags); |
| 1474 | if (r8a66597->gadget.speed != USB_SPEED_UNKNOWN) |
| 1475 | r8a66597_usb_disconnect(r8a66597); |
| 1476 | spin_unlock_irqrestore(&r8a66597->lock, flags); |
| 1477 | |
| 1478 | r8a66597_bclr(r8a66597, VBSE, INTENB0); |
| 1479 | |
| 1480 | driver->unbind(&r8a66597->gadget); |
| 1481 | |
| 1482 | init_controller(r8a66597); |
| 1483 | disable_controller(r8a66597); |
| 1484 | |
| 1485 | device_del(&r8a66597->gadget.dev); |
| 1486 | r8a66597->driver = NULL; |
| 1487 | return 0; |
| 1488 | } |
| 1489 | EXPORT_SYMBOL(usb_gadget_unregister_driver); |
| 1490 | |
| 1491 | /*-------------------------------------------------------------------------*/ |
| 1492 | static int r8a66597_get_frame(struct usb_gadget *_gadget) |
| 1493 | { |
| 1494 | struct r8a66597 *r8a66597 = gadget_to_r8a66597(_gadget); |
| 1495 | return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; |
| 1496 | } |
| 1497 | |
| 1498 | static struct usb_gadget_ops r8a66597_gadget_ops = { |
| 1499 | .get_frame = r8a66597_get_frame, |
| 1500 | }; |
| 1501 | |
| 1502 | static int __exit r8a66597_remove(struct platform_device *pdev) |
| 1503 | { |
| 1504 | struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); |
| 1505 | |
| 1506 | del_timer_sync(&r8a66597->timer); |
Paul Mundt | e8b4866 | 2010-06-02 16:27:12 +0900 | [diff] [blame] | 1507 | iounmap(r8a66597->reg); |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1508 | free_irq(platform_get_irq(pdev, 0), r8a66597); |
| 1509 | r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1510 | #ifdef CONFIG_HAVE_CLK |
| 1511 | if (r8a66597->pdata->on_chip) { |
| 1512 | clk_disable(r8a66597->clk); |
| 1513 | clk_put(r8a66597->clk); |
| 1514 | } |
| 1515 | #endif |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1516 | kfree(r8a66597); |
| 1517 | return 0; |
| 1518 | } |
| 1519 | |
| 1520 | static void nop_completion(struct usb_ep *ep, struct usb_request *r) |
| 1521 | { |
| 1522 | } |
| 1523 | |
| 1524 | static int __init r8a66597_probe(struct platform_device *pdev) |
| 1525 | { |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1526 | #ifdef CONFIG_HAVE_CLK |
| 1527 | char clk_name[8]; |
| 1528 | #endif |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1529 | struct resource *res, *ires; |
| 1530 | int irq; |
| 1531 | void __iomem *reg = NULL; |
| 1532 | struct r8a66597 *r8a66597 = NULL; |
| 1533 | int ret = 0; |
| 1534 | int i; |
| 1535 | unsigned long irq_trigger; |
| 1536 | |
| 1537 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1538 | if (!res) { |
| 1539 | ret = -ENODEV; |
| 1540 | printk(KERN_ERR "platform_get_resource error.\n"); |
| 1541 | goto clean_up; |
| 1542 | } |
| 1543 | |
| 1544 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 1545 | irq = ires->start; |
| 1546 | irq_trigger = ires->flags & IRQF_TRIGGER_MASK; |
| 1547 | |
| 1548 | if (irq < 0) { |
| 1549 | ret = -ENODEV; |
| 1550 | printk(KERN_ERR "platform_get_irq error.\n"); |
| 1551 | goto clean_up; |
| 1552 | } |
| 1553 | |
| 1554 | reg = ioremap(res->start, resource_size(res)); |
| 1555 | if (reg == NULL) { |
| 1556 | ret = -ENOMEM; |
| 1557 | printk(KERN_ERR "ioremap error.\n"); |
| 1558 | goto clean_up; |
| 1559 | } |
| 1560 | |
| 1561 | /* initialize ucd */ |
| 1562 | r8a66597 = kzalloc(sizeof(struct r8a66597), GFP_KERNEL); |
| 1563 | if (r8a66597 == NULL) { |
Axel Lin | 96f2a34 | 2010-08-17 09:41:29 +0800 | [diff] [blame] | 1564 | ret = -ENOMEM; |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1565 | printk(KERN_ERR "kzalloc error\n"); |
| 1566 | goto clean_up; |
| 1567 | } |
| 1568 | |
| 1569 | spin_lock_init(&r8a66597->lock); |
| 1570 | dev_set_drvdata(&pdev->dev, r8a66597); |
| 1571 | r8a66597->pdata = pdev->dev.platform_data; |
| 1572 | r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; |
| 1573 | |
| 1574 | r8a66597->gadget.ops = &r8a66597_gadget_ops; |
| 1575 | device_initialize(&r8a66597->gadget.dev); |
| 1576 | dev_set_name(&r8a66597->gadget.dev, "gadget"); |
| 1577 | r8a66597->gadget.is_dualspeed = 1; |
| 1578 | r8a66597->gadget.dev.parent = &pdev->dev; |
| 1579 | r8a66597->gadget.dev.dma_mask = pdev->dev.dma_mask; |
| 1580 | r8a66597->gadget.dev.release = pdev->dev.release; |
| 1581 | r8a66597->gadget.name = udc_name; |
| 1582 | |
| 1583 | init_timer(&r8a66597->timer); |
| 1584 | r8a66597->timer.function = r8a66597_timer; |
| 1585 | r8a66597->timer.data = (unsigned long)r8a66597; |
Paul Mundt | e8b4866 | 2010-06-02 16:27:12 +0900 | [diff] [blame] | 1586 | r8a66597->reg = reg; |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1587 | |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1588 | #ifdef CONFIG_HAVE_CLK |
| 1589 | if (r8a66597->pdata->on_chip) { |
| 1590 | snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); |
| 1591 | r8a66597->clk = clk_get(&pdev->dev, clk_name); |
| 1592 | if (IS_ERR(r8a66597->clk)) { |
| 1593 | dev_err(&pdev->dev, "cannot get clock \"%s\"\n", |
| 1594 | clk_name); |
| 1595 | ret = PTR_ERR(r8a66597->clk); |
| 1596 | goto clean_up; |
| 1597 | } |
| 1598 | clk_enable(r8a66597->clk); |
| 1599 | } |
| 1600 | #endif |
| 1601 | |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1602 | disable_controller(r8a66597); /* make sure controller is disabled */ |
| 1603 | |
| 1604 | ret = request_irq(irq, r8a66597_irq, IRQF_DISABLED | IRQF_SHARED, |
| 1605 | udc_name, r8a66597); |
| 1606 | if (ret < 0) { |
| 1607 | printk(KERN_ERR "request_irq error (%d)\n", ret); |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1608 | goto clean_up2; |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1609 | } |
| 1610 | |
| 1611 | INIT_LIST_HEAD(&r8a66597->gadget.ep_list); |
| 1612 | r8a66597->gadget.ep0 = &r8a66597->ep[0].ep; |
| 1613 | INIT_LIST_HEAD(&r8a66597->gadget.ep0->ep_list); |
| 1614 | for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { |
| 1615 | struct r8a66597_ep *ep = &r8a66597->ep[i]; |
| 1616 | |
| 1617 | if (i != 0) { |
| 1618 | INIT_LIST_HEAD(&r8a66597->ep[i].ep.ep_list); |
| 1619 | list_add_tail(&r8a66597->ep[i].ep.ep_list, |
| 1620 | &r8a66597->gadget.ep_list); |
| 1621 | } |
| 1622 | ep->r8a66597 = r8a66597; |
| 1623 | INIT_LIST_HEAD(&ep->queue); |
| 1624 | ep->ep.name = r8a66597_ep_name[i]; |
| 1625 | ep->ep.ops = &r8a66597_ep_ops; |
| 1626 | ep->ep.maxpacket = 512; |
| 1627 | } |
| 1628 | r8a66597->ep[0].ep.maxpacket = 64; |
| 1629 | r8a66597->ep[0].pipenum = 0; |
| 1630 | r8a66597->ep[0].fifoaddr = CFIFO; |
| 1631 | r8a66597->ep[0].fifosel = CFIFOSEL; |
| 1632 | r8a66597->ep[0].fifoctr = CFIFOCTR; |
| 1633 | r8a66597->ep[0].fifotrn = 0; |
| 1634 | r8a66597->ep[0].pipectr = get_pipectr_addr(0); |
| 1635 | r8a66597->pipenum2ep[0] = &r8a66597->ep[0]; |
| 1636 | r8a66597->epaddr2ep[0] = &r8a66597->ep[0]; |
| 1637 | |
| 1638 | the_controller = r8a66597; |
| 1639 | |
| 1640 | r8a66597->ep0_req = r8a66597_alloc_request(&r8a66597->ep[0].ep, |
| 1641 | GFP_KERNEL); |
| 1642 | if (r8a66597->ep0_req == NULL) |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1643 | goto clean_up3; |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1644 | r8a66597->ep0_req->complete = nop_completion; |
| 1645 | |
| 1646 | init_controller(r8a66597); |
| 1647 | |
| 1648 | dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); |
| 1649 | return 0; |
| 1650 | |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1651 | clean_up3: |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1652 | free_irq(irq, r8a66597); |
Magnus Damm | d2e27bd | 2009-08-19 09:50:49 +0000 | [diff] [blame] | 1653 | clean_up2: |
| 1654 | #ifdef CONFIG_HAVE_CLK |
| 1655 | if (r8a66597->pdata->on_chip) { |
| 1656 | clk_disable(r8a66597->clk); |
| 1657 | clk_put(r8a66597->clk); |
| 1658 | } |
| 1659 | #endif |
Yoshihiro Shimoda | c414424 | 2009-08-19 04:59:39 +0000 | [diff] [blame] | 1660 | clean_up: |
| 1661 | if (r8a66597) { |
| 1662 | if (r8a66597->ep0_req) |
| 1663 | r8a66597_free_request(&r8a66597->ep[0].ep, |
| 1664 | r8a66597->ep0_req); |
| 1665 | kfree(r8a66597); |
| 1666 | } |
| 1667 | if (reg) |
| 1668 | iounmap(reg); |
| 1669 | |
| 1670 | return ret; |
| 1671 | } |
| 1672 | |
| 1673 | /*-------------------------------------------------------------------------*/ |
| 1674 | static struct platform_driver r8a66597_driver = { |
| 1675 | .remove = __exit_p(r8a66597_remove), |
| 1676 | .driver = { |
| 1677 | .name = (char *) udc_name, |
| 1678 | }, |
| 1679 | }; |
| 1680 | |
| 1681 | static int __init r8a66597_udc_init(void) |
| 1682 | { |
| 1683 | return platform_driver_probe(&r8a66597_driver, r8a66597_probe); |
| 1684 | } |
| 1685 | module_init(r8a66597_udc_init); |
| 1686 | |
| 1687 | static void __exit r8a66597_udc_cleanup(void) |
| 1688 | { |
| 1689 | platform_driver_unregister(&r8a66597_driver); |
| 1690 | } |
| 1691 | module_exit(r8a66597_udc_cleanup); |
| 1692 | |
| 1693 | MODULE_DESCRIPTION("R8A66597 USB gadget driver"); |
| 1694 | MODULE_LICENSE("GPL"); |
| 1695 | MODULE_AUTHOR("Yoshihiro Shimoda"); |
| 1696 | |