1 /* 2 * linux/drivers/usb/gadget/pxa27x_udc.h 3 * Intel PXA27x on-chip full speed USB device controller 4 * 5 * Inspired by original driver by Frank Becker, David Brownell, and others. 6 * Copyright (C) 2008 Robert Jarzmik 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; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14 #ifndef __LINUX_USB_GADGET_PXA27X_H 15 #define __LINUX_USB_GADGET_PXA27X_H 16 17 #include <linux/types.h> 18 #include <linux/spinlock.h> 19 #include <linux/io.h> 20 #include <linux/usb/otg.h> 21 22 /* 23 * Register definitions 24 */ 25 /* Offsets */ 26 #define UDCCR 0x0000 /* UDC Control Register */ 27 #define UDCICR0 0x0004 /* UDC Interrupt Control Register0 */ 28 #define UDCICR1 0x0008 /* UDC Interrupt Control Register1 */ 29 #define UDCISR0 0x000C /* UDC Interrupt Status Register 0 */ 30 #define UDCISR1 0x0010 /* UDC Interrupt Status Register 1 */ 31 #define UDCFNR 0x0014 /* UDC Frame Number Register */ 32 #define UDCOTGICR 0x0018 /* UDC On-The-Go interrupt control */ 33 #define UP2OCR 0x0020 /* USB Port 2 Output Control register */ 34 #define UP3OCR 0x0024 /* USB Port 3 Output Control register */ 35 #define UDCCSRn(x) (0x0100 + ((x)<<2)) /* UDC Control/Status register */ 36 #define UDCBCRn(x) (0x0200 + ((x)<<2)) /* UDC Byte Count Register */ 37 #define UDCDRn(x) (0x0300 + ((x)<<2)) /* UDC Data Register */ 38 #define UDCCRn(x) (0x0400 + ((x)<<2)) /* UDC Control Register */ 39 40 #define UDCCR_OEN (1 << 31) /* On-the-Go Enable */ 41 #define UDCCR_AALTHNP (1 << 30) /* A-device Alternate Host Negotiation 42 Protocol Port Support */ 43 #define UDCCR_AHNP (1 << 29) /* A-device Host Negotiation Protocol 44 Support */ 45 #define UDCCR_BHNP (1 << 28) /* B-device Host Negotiation Protocol 46 Enable */ 47 #define UDCCR_DWRE (1 << 16) /* Device Remote Wake-up Enable */ 48 #define UDCCR_ACN (0x03 << 11) /* Active UDC configuration Number */ 49 #define UDCCR_ACN_S 11 50 #define UDCCR_AIN (0x07 << 8) /* Active UDC interface Number */ 51 #define UDCCR_AIN_S 8 52 #define UDCCR_AAISN (0x07 << 5) /* Active UDC Alternate Interface 53 Setting Number */ 54 #define UDCCR_AAISN_S 5 55 #define UDCCR_SMAC (1 << 4) /* Switch Endpoint Memory to Active 56 Configuration */ 57 #define UDCCR_EMCE (1 << 3) /* Endpoint Memory Configuration 58 Error */ 59 #define UDCCR_UDR (1 << 2) /* UDC Resume */ 60 #define UDCCR_UDA (1 << 1) /* UDC Active */ 61 #define UDCCR_UDE (1 << 0) /* UDC Enable */ 62 63 #define UDCICR_INT(n, intr) (((intr) & 0x03) << (((n) & 0x0F) * 2)) 64 #define UDCICR1_IECC (1 << 31) /* IntEn - Configuration Change */ 65 #define UDCICR1_IESOF (1 << 30) /* IntEn - Start of Frame */ 66 #define UDCICR1_IERU (1 << 29) /* IntEn - Resume */ 67 #define UDCICR1_IESU (1 << 28) /* IntEn - Suspend */ 68 #define UDCICR1_IERS (1 << 27) /* IntEn - Reset */ 69 #define UDCICR_FIFOERR (1 << 1) /* FIFO Error interrupt for EP */ 70 #define UDCICR_PKTCOMPL (1 << 0) /* Packet Complete interrupt for EP */ 71 #define UDCICR_INT_MASK (UDCICR_FIFOERR | UDCICR_PKTCOMPL) 72 73 #define UDCISR_INT(n, intr) (((intr) & 0x03) << (((n) & 0x0F) * 2)) 74 #define UDCISR1_IRCC (1 << 31) /* IntReq - Configuration Change */ 75 #define UDCISR1_IRSOF (1 << 30) /* IntReq - Start of Frame */ 76 #define UDCISR1_IRRU (1 << 29) /* IntReq - Resume */ 77 #define UDCISR1_IRSU (1 << 28) /* IntReq - Suspend */ 78 #define UDCISR1_IRRS (1 << 27) /* IntReq - Reset */ 79 #define UDCISR_INT_MASK (UDCICR_FIFOERR | UDCICR_PKTCOMPL) 80 81 #define UDCOTGICR_IESF (1 << 24) /* OTG SET_FEATURE command recvd */ 82 #define UDCOTGICR_IEXR (1 << 17) /* Extra Transceiver Interrupt 83 Rising Edge Interrupt Enable */ 84 #define UDCOTGICR_IEXF (1 << 16) /* Extra Transceiver Interrupt 85 Falling Edge Interrupt Enable */ 86 #define UDCOTGICR_IEVV40R (1 << 9) /* OTG Vbus Valid 4.0V Rising Edge 87 Interrupt Enable */ 88 #define UDCOTGICR_IEVV40F (1 << 8) /* OTG Vbus Valid 4.0V Falling Edge 89 Interrupt Enable */ 90 #define UDCOTGICR_IEVV44R (1 << 7) /* OTG Vbus Valid 4.4V Rising Edge 91 Interrupt Enable */ 92 #define UDCOTGICR_IEVV44F (1 << 6) /* OTG Vbus Valid 4.4V Falling Edge 93 Interrupt Enable */ 94 #define UDCOTGICR_IESVR (1 << 5) /* OTG Session Valid Rising Edge 95 Interrupt Enable */ 96 #define UDCOTGICR_IESVF (1 << 4) /* OTG Session Valid Falling Edge 97 Interrupt Enable */ 98 #define UDCOTGICR_IESDR (1 << 3) /* OTG A-Device SRP Detect Rising 99 Edge Interrupt Enable */ 100 #define UDCOTGICR_IESDF (1 << 2) /* OTG A-Device SRP Detect Falling 101 Edge Interrupt Enable */ 102 #define UDCOTGICR_IEIDR (1 << 1) /* OTG ID Change Rising Edge 103 Interrupt Enable */ 104 #define UDCOTGICR_IEIDF (1 << 0) /* OTG ID Change Falling Edge 105 Interrupt Enable */ 106 107 /* Host Port 2 field bits */ 108 #define UP2OCR_CPVEN (1 << 0) /* Charge Pump Vbus Enable */ 109 #define UP2OCR_CPVPE (1 << 1) /* Charge Pump Vbus Pulse Enable */ 110 /* Transceiver enablers */ 111 #define UP2OCR_DPPDE (1 << 2) /* D+ Pull Down Enable */ 112 #define UP2OCR_DMPDE (1 << 3) /* D- Pull Down Enable */ 113 #define UP2OCR_DPPUE (1 << 4) /* D+ Pull Up Enable */ 114 #define UP2OCR_DMPUE (1 << 5) /* D- Pull Up Enable */ 115 #define UP2OCR_DPPUBE (1 << 6) /* D+ Pull Up Bypass Enable */ 116 #define UP2OCR_DMPUBE (1 << 7) /* D- Pull Up Bypass Enable */ 117 #define UP2OCR_EXSP (1 << 8) /* External Transceiver Speed Control */ 118 #define UP2OCR_EXSUS (1 << 9) /* External Transceiver Speed Enable */ 119 #define UP2OCR_IDON (1 << 10) /* OTG ID Read Enable */ 120 #define UP2OCR_HXS (1 << 16) /* Transceiver Output Select */ 121 #define UP2OCR_HXOE (1 << 17) /* Transceiver Output Enable */ 122 #define UP2OCR_SEOS (1 << 24) /* Single-Ended Output Select */ 123 124 #define UDCCSR0_ACM (1 << 9) /* Ack Control Mode */ 125 #define UDCCSR0_AREN (1 << 8) /* Ack Response Enable */ 126 #define UDCCSR0_SA (1 << 7) /* Setup Active */ 127 #define UDCCSR0_RNE (1 << 6) /* Receive FIFO Not Empty */ 128 #define UDCCSR0_FST (1 << 5) /* Force Stall */ 129 #define UDCCSR0_SST (1 << 4) /* Sent Stall */ 130 #define UDCCSR0_DME (1 << 3) /* DMA Enable */ 131 #define UDCCSR0_FTF (1 << 2) /* Flush Transmit FIFO */ 132 #define UDCCSR0_IPR (1 << 1) /* IN Packet Ready */ 133 #define UDCCSR0_OPC (1 << 0) /* OUT Packet Complete */ 134 135 #define UDCCSR_DPE (1 << 9) /* Data Packet Error */ 136 #define UDCCSR_FEF (1 << 8) /* Flush Endpoint FIFO */ 137 #define UDCCSR_SP (1 << 7) /* Short Packet Control/Status */ 138 #define UDCCSR_BNE (1 << 6) /* Buffer Not Empty (IN endpoints) */ 139 #define UDCCSR_BNF (1 << 6) /* Buffer Not Full (OUT endpoints) */ 140 #define UDCCSR_FST (1 << 5) /* Force STALL */ 141 #define UDCCSR_SST (1 << 4) /* Sent STALL */ 142 #define UDCCSR_DME (1 << 3) /* DMA Enable */ 143 #define UDCCSR_TRN (1 << 2) /* Tx/Rx NAK */ 144 #define UDCCSR_PC (1 << 1) /* Packet Complete */ 145 #define UDCCSR_FS (1 << 0) /* FIFO needs service */ 146 147 #define UDCCONR_CN (0x03 << 25) /* Configuration Number */ 148 #define UDCCONR_CN_S 25 149 #define UDCCONR_IN (0x07 << 22) /* Interface Number */ 150 #define UDCCONR_IN_S 22 151 #define UDCCONR_AISN (0x07 << 19) /* Alternate Interface Number */ 152 #define UDCCONR_AISN_S 19 153 #define UDCCONR_EN (0x0f << 15) /* Endpoint Number */ 154 #define UDCCONR_EN_S 15 155 #define UDCCONR_ET (0x03 << 13) /* Endpoint Type: */ 156 #define UDCCONR_ET_S 13 157 #define UDCCONR_ET_INT (0x03 << 13) /* Interrupt */ 158 #define UDCCONR_ET_BULK (0x02 << 13) /* Bulk */ 159 #define UDCCONR_ET_ISO (0x01 << 13) /* Isochronous */ 160 #define UDCCONR_ET_NU (0x00 << 13) /* Not used */ 161 #define UDCCONR_ED (1 << 12) /* Endpoint Direction */ 162 #define UDCCONR_MPS (0x3ff << 2) /* Maximum Packet Size */ 163 #define UDCCONR_MPS_S 2 164 #define UDCCONR_DE (1 << 1) /* Double Buffering Enable */ 165 #define UDCCONR_EE (1 << 0) /* Endpoint Enable */ 166 167 #define UDCCR_MASK_BITS (UDCCR_OEN | UDCCR_SMAC | UDCCR_UDR | UDCCR_UDE) 168 #define UDCCSR_WR_MASK (UDCCSR_DME | UDCCSR_FST) 169 #define UDC_FNR_MASK (0x7ff) 170 #define UDC_BCR_MASK (0x3ff) 171 172 /* 173 * UDCCR = UDC Endpoint Configuration Registers 174 * UDCCSR = UDC Control/Status Register for this EP 175 * UDCBCR = UDC Byte Count Remaining (contents of OUT fifo) 176 * UDCDR = UDC Endpoint Data Register (the fifo) 177 */ 178 #define ofs_UDCCR(ep) (UDCCRn(ep->idx)) 179 #define ofs_UDCCSR(ep) (UDCCSRn(ep->idx)) 180 #define ofs_UDCBCR(ep) (UDCBCRn(ep->idx)) 181 #define ofs_UDCDR(ep) (UDCDRn(ep->idx)) 182 183 /* Register access macros */ 184 #define udc_ep_readl(ep, reg) \ 185 __raw_readl((ep)->dev->regs + ofs_##reg(ep)) 186 #define udc_ep_writel(ep, reg, value) \ 187 __raw_writel((value), ep->dev->regs + ofs_##reg(ep)) 188 #define udc_ep_readb(ep, reg) \ 189 __raw_readb((ep)->dev->regs + ofs_##reg(ep)) 190 #define udc_ep_writeb(ep, reg, value) \ 191 __raw_writeb((value), ep->dev->regs + ofs_##reg(ep)) 192 #define udc_readl(dev, reg) \ 193 __raw_readl((dev)->regs + (reg)) 194 #define udc_writel(udc, reg, value) \ 195 __raw_writel((value), (udc)->regs + (reg)) 196 197 #define UDCCSR_MASK (UDCCSR_FST | UDCCSR_DME) 198 #define UDCCISR0_EP_MASK ~0 199 #define UDCCISR1_EP_MASK 0xffff 200 #define UDCCSR0_CTRL_REQ_MASK (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE) 201 202 #define EPIDX(ep) (ep->idx) 203 #define EPADDR(ep) (ep->addr) 204 #define EPXFERTYPE(ep) (ep->type) 205 #define EPNAME(ep) (ep->name) 206 #define is_ep0(ep) (!ep->idx) 207 #define EPXFERTYPE_is_ISO(ep) (EPXFERTYPE(ep) == USB_ENDPOINT_XFER_ISOC) 208 209 /* 210 * Endpoint definitions 211 * 212 * Once enabled, pxa endpoint configuration is freezed, and cannot change 213 * unless a reset happens or the udc is disabled. 214 * Therefore, we must define all pxa potential endpoint definitions needed for 215 * all gadget and set them up before the udc is enabled. 216 * 217 * As the architecture chosen is fully static, meaning the pxa endpoint 218 * configurations are set up once and for all, we must provide a way to match 219 * one usb endpoint (usb_ep) to several pxa endpoints. The reason is that gadget 220 * layer autoconf doesn't choose the usb_ep endpoint on (config, interface, alt) 221 * criteria, while the pxa architecture requires that. 222 * 223 * The solution is to define several pxa endpoints matching one usb_ep. Ex: 224 * - "ep1-in" matches pxa endpoint EPA (which is an IN ep at addr 1, when 225 * the udc talks on (config=3, interface=0, alt=0) 226 * - "ep1-in" matches pxa endpoint EPB (which is an IN ep at addr 1, when 227 * the udc talks on (config=3, interface=0, alt=1) 228 * - "ep1-in" matches pxa endpoint EPC (which is an IN ep at addr 1, when 229 * the udc talks on (config=2, interface=0, alt=0) 230 * 231 * We'll define the pxa endpoint by its index (EPA => idx=1, EPB => idx=2, ...) 232 */ 233 234 /* 235 * Endpoint definition helpers 236 */ 237 #define USB_EP_DEF(addr, bname, dir, type, maxpkt) \ 238 { .usb_ep = { .name = bname, .ops = &pxa_ep_ops, .maxpacket = maxpkt, }, \ 239 .desc = { .bEndpointAddress = addr | (dir ? USB_DIR_IN : 0), \ 240 .bmAttributes = type, \ 241 .wMaxPacketSize = maxpkt, }, \ 242 .dev = &memory \ 243 } 244 #define USB_EP_BULK(addr, bname, dir) \ 245 USB_EP_DEF(addr, bname, dir, USB_ENDPOINT_XFER_BULK, BULK_FIFO_SIZE) 246 #define USB_EP_ISO(addr, bname, dir) \ 247 USB_EP_DEF(addr, bname, dir, USB_ENDPOINT_XFER_ISOC, ISO_FIFO_SIZE) 248 #define USB_EP_INT(addr, bname, dir) \ 249 USB_EP_DEF(addr, bname, dir, USB_ENDPOINT_XFER_INT, INT_FIFO_SIZE) 250 #define USB_EP_IN_BULK(n) USB_EP_BULK(n, "ep" #n "in-bulk", 1) 251 #define USB_EP_OUT_BULK(n) USB_EP_BULK(n, "ep" #n "out-bulk", 0) 252 #define USB_EP_IN_ISO(n) USB_EP_ISO(n, "ep" #n "in-iso", 1) 253 #define USB_EP_OUT_ISO(n) USB_EP_ISO(n, "ep" #n "out-iso", 0) 254 #define USB_EP_IN_INT(n) USB_EP_INT(n, "ep" #n "in-int", 1) 255 #define USB_EP_CTRL USB_EP_DEF(0, "ep0", 0, 0, EP0_FIFO_SIZE) 256 257 #define PXA_EP_DEF(_idx, _addr, dir, _type, maxpkt, _config, iface, altset) \ 258 { \ 259 .dev = &memory, \ 260 .name = "ep" #_idx, \ 261 .idx = _idx, .enabled = 0, \ 262 .dir_in = dir, .addr = _addr, \ 263 .config = _config, .interface = iface, .alternate = altset, \ 264 .type = _type, .fifo_size = maxpkt, \ 265 } 266 #define PXA_EP_BULK(_idx, addr, dir, config, iface, alt) \ 267 PXA_EP_DEF(_idx, addr, dir, USB_ENDPOINT_XFER_BULK, BULK_FIFO_SIZE, \ 268 config, iface, alt) 269 #define PXA_EP_ISO(_idx, addr, dir, config, iface, alt) \ 270 PXA_EP_DEF(_idx, addr, dir, USB_ENDPOINT_XFER_ISOC, ISO_FIFO_SIZE, \ 271 config, iface, alt) 272 #define PXA_EP_INT(_idx, addr, dir, config, iface, alt) \ 273 PXA_EP_DEF(_idx, addr, dir, USB_ENDPOINT_XFER_INT, INT_FIFO_SIZE, \ 274 config, iface, alt) 275 #define PXA_EP_IN_BULK(i, adr, c, f, a) PXA_EP_BULK(i, adr, 1, c, f, a) 276 #define PXA_EP_OUT_BULK(i, adr, c, f, a) PXA_EP_BULK(i, adr, 0, c, f, a) 277 #define PXA_EP_IN_ISO(i, adr, c, f, a) PXA_EP_ISO(i, adr, 1, c, f, a) 278 #define PXA_EP_OUT_ISO(i, adr, c, f, a) PXA_EP_ISO(i, adr, 0, c, f, a) 279 #define PXA_EP_IN_INT(i, adr, c, f, a) PXA_EP_INT(i, adr, 1, c, f, a) 280 #define PXA_EP_CTRL PXA_EP_DEF(0, 0, 0, 0, EP0_FIFO_SIZE, 0, 0, 0) 281 282 struct pxa27x_udc; 283 284 struct stats { 285 unsigned long in_ops; 286 unsigned long out_ops; 287 unsigned long in_bytes; 288 unsigned long out_bytes; 289 unsigned long irqs; 290 }; 291 292 /** 293 * struct udc_usb_ep - container of each usb_ep structure 294 * @usb_ep: usb endpoint 295 * @desc: usb descriptor, especially type and address 296 * @dev: udc managing this endpoint 297 * @pxa_ep: matching pxa_ep (cache of find_pxa_ep() call) 298 */ 299 struct udc_usb_ep { 300 struct usb_ep usb_ep; 301 struct usb_endpoint_descriptor desc; 302 struct pxa_udc *dev; 303 struct pxa_ep *pxa_ep; 304 }; 305 306 /** 307 * struct pxa_ep - pxa endpoint 308 * @dev: udc device 309 * @queue: requests queue 310 * @lock: lock to pxa_ep data (queues and stats) 311 * @enabled: true when endpoint enabled (not stopped by gadget layer) 312 * @in_handle_ep: number of recursions of handle_ep() function 313 * Prevents deadlocks or infinite recursions of types : 314 * irq->handle_ep()->req_done()->req.complete()->pxa_ep_queue()->handle_ep() 315 * or 316 * pxa_ep_queue()->handle_ep()->req_done()->req.complete()->pxa_ep_queue() 317 * @idx: endpoint index (1 => epA, 2 => epB, ..., 24 => epX) 318 * @name: endpoint name (for trace/debug purpose) 319 * @dir_in: 1 if IN endpoint, 0 if OUT endpoint 320 * @addr: usb endpoint number 321 * @config: configuration in which this endpoint is active 322 * @interface: interface in which this endpoint is active 323 * @alternate: altsetting in which this endpoitn is active 324 * @fifo_size: max packet size in the endpoint fifo 325 * @type: endpoint type (bulk, iso, int, ...) 326 * @udccsr_value: save register of UDCCSR0 for suspend/resume 327 * @udccr_value: save register of UDCCR for suspend/resume 328 * @stats: endpoint statistics 329 * 330 * The *PROBLEM* is that pxa's endpoint configuration scheme is both misdesigned 331 * (cares about config/interface/altsetting, thus placing needless limits on 332 * device capability) and full of implementation bugs forcing it to be set up 333 * for use more or less like a pxa255. 334 * 335 * As we define the pxa_ep statically, we must guess all needed pxa_ep for all 336 * gadget which may work with this udc driver. 337 */ 338 struct pxa_ep { 339 struct pxa_udc *dev; 340 341 struct list_head queue; 342 spinlock_t lock; /* Protects this structure */ 343 /* (queues, stats) */ 344 unsigned enabled:1; 345 unsigned in_handle_ep:1; 346 347 unsigned idx:5; 348 char *name; 349 350 /* 351 * Specific pxa endpoint data, needed for hardware initialization 352 */ 353 unsigned dir_in:1; 354 unsigned addr:4; 355 unsigned config:2; 356 unsigned interface:3; 357 unsigned alternate:3; 358 unsigned fifo_size; 359 unsigned type; 360 361 #ifdef CONFIG_PM 362 u32 udccsr_value; 363 u32 udccr_value; 364 #endif 365 struct stats stats; 366 }; 367 368 /** 369 * struct pxa27x_request - container of each usb_request structure 370 * @req: usb request 371 * @udc_usb_ep: usb endpoint the request was submitted on 372 * @in_use: sanity check if request already queued on an pxa_ep 373 * @queue: linked list of requests, linked on pxa_ep->queue 374 */ 375 struct pxa27x_request { 376 struct usb_request req; 377 struct udc_usb_ep *udc_usb_ep; 378 unsigned in_use:1; 379 struct list_head queue; 380 }; 381 382 enum ep0_state { 383 WAIT_FOR_SETUP, 384 SETUP_STAGE, 385 IN_DATA_STAGE, 386 OUT_DATA_STAGE, 387 IN_STATUS_STAGE, 388 OUT_STATUS_STAGE, 389 STALL, 390 WAIT_ACK_SET_CONF_INTERF 391 }; 392 393 static char *ep0_state_name[] = { 394 "WAIT_FOR_SETUP", "SETUP_STAGE", "IN_DATA_STAGE", "OUT_DATA_STAGE", 395 "IN_STATUS_STAGE", "OUT_STATUS_STAGE", "STALL", 396 "WAIT_ACK_SET_CONF_INTERF" 397 }; 398 #define EP0_STNAME(udc) ep0_state_name[(udc)->ep0state] 399 400 #define EP0_FIFO_SIZE 16U 401 #define BULK_FIFO_SIZE 64U 402 #define ISO_FIFO_SIZE 256U 403 #define INT_FIFO_SIZE 16U 404 405 struct udc_stats { 406 unsigned long irqs_reset; 407 unsigned long irqs_suspend; 408 unsigned long irqs_resume; 409 unsigned long irqs_reconfig; 410 }; 411 412 #define NR_USB_ENDPOINTS (1 + 5) /* ep0 + ep1in-bulk + .. + ep3in-iso */ 413 #define NR_PXA_ENDPOINTS (1 + 14) /* ep0 + epA + epB + .. + epX */ 414 415 /** 416 * struct pxa_udc - udc structure 417 * @regs: mapped IO space 418 * @irq: udc irq 419 * @clk: udc clock 420 * @usb_gadget: udc gadget structure 421 * @driver: bound gadget (zero, g_ether, g_mass_storage, ...) 422 * @dev: device 423 * @udc_command: machine specific function to activate D+ pullup 424 * @gpiod: gpio descriptor of gpio for D+ pullup (or NULL if none) 425 * @transceiver: external transceiver to handle vbus sense and D+ pullup 426 * @ep0state: control endpoint state machine state 427 * @stats: statistics on udc usage 428 * @udc_usb_ep: array of usb endpoints offered by the gadget 429 * @pxa_ep: array of pxa available endpoints 430 * @enabled: UDC was enabled by a previous udc_enable() 431 * @pullup_on: if pullup resistor connected to D+ pin 432 * @pullup_resume: if pullup resistor should be connected to D+ pin on resume 433 * @config: UDC active configuration 434 * @last_interface: UDC interface of the last SET_INTERFACE host request 435 * @last_alternate: UDC altsetting of the last SET_INTERFACE host request 436 * @udccsr0: save of udccsr0 in case of suspend 437 * @debugfs_root: root entry of debug filesystem 438 * @debugfs_state: debugfs entry for "udcstate" 439 * @debugfs_queues: debugfs entry for "queues" 440 * @debugfs_eps: debugfs entry for "epstate" 441 */ 442 struct pxa_udc { 443 void __iomem *regs; 444 int irq; 445 struct clk *clk; 446 447 struct usb_gadget gadget; 448 struct usb_gadget_driver *driver; 449 struct device *dev; 450 void (*udc_command)(int); 451 struct gpio_desc *gpiod; 452 struct usb_phy *transceiver; 453 454 enum ep0_state ep0state; 455 struct udc_stats stats; 456 457 struct udc_usb_ep udc_usb_ep[NR_USB_ENDPOINTS]; 458 struct pxa_ep pxa_ep[NR_PXA_ENDPOINTS]; 459 460 unsigned enabled:1; 461 unsigned pullup_on:1; 462 unsigned pullup_resume:1; 463 unsigned vbus_sensed:1; 464 unsigned config:2; 465 unsigned last_interface:3; 466 unsigned last_alternate:3; 467 468 #ifdef CONFIG_PM 469 unsigned udccsr0; 470 #endif 471 #ifdef CONFIG_USB_GADGET_DEBUG_FS 472 struct dentry *debugfs_root; 473 struct dentry *debugfs_state; 474 struct dentry *debugfs_queues; 475 struct dentry *debugfs_eps; 476 #endif 477 }; 478 #define to_pxa(g) (container_of((g), struct pxa_udc, gadget)) 479 480 static inline struct pxa_udc *to_gadget_udc(struct usb_gadget *gadget) 481 { 482 return container_of(gadget, struct pxa_udc, gadget); 483 } 484 485 /* 486 * Debugging/message support 487 */ 488 #define ep_dbg(ep, fmt, arg...) \ 489 dev_dbg(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg) 490 #define ep_vdbg(ep, fmt, arg...) \ 491 dev_vdbg(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg) 492 #define ep_err(ep, fmt, arg...) \ 493 dev_err(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg) 494 #define ep_info(ep, fmt, arg...) \ 495 dev_info(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg) 496 #define ep_warn(ep, fmt, arg...) \ 497 dev_warn(ep->dev->dev, "%s:%s:" fmt, EPNAME(ep), __func__, ## arg) 498 499 #endif /* __LINUX_USB_GADGET_PXA27X_H */ 500