tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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, ctype, cdir) \
238{ .usb_ep = { .name = bname, .ops = &pxa_ep_ops, .maxpacket = maxpkt, \
239 .caps = USB_EP_CAPS(ctype, cdir), }, \
240 .desc = { .bEndpointAddress = addr | (dir ? USB_DIR_IN : 0), \
241 .bmAttributes = USB_ENDPOINT_XFER_ ## type, \
242 .wMaxPacketSize = maxpkt, }, \
243 .dev = &memory \
244}
245#define USB_EP_BULK(addr, bname, dir, cdir) \
246 USB_EP_DEF(addr, bname, dir, BULK, BULK_FIFO_SIZE, \
247 USB_EP_CAPS_TYPE_BULK, cdir)
248#define USB_EP_ISO(addr, bname, dir, cdir) \
249 USB_EP_DEF(addr, bname, dir, ISOC, ISO_FIFO_SIZE, \
250 USB_EP_CAPS_TYPE_ISO, cdir)
251#define USB_EP_INT(addr, bname, dir, cdir) \
252 USB_EP_DEF(addr, bname, dir, INT, INT_FIFO_SIZE, \
253 USB_EP_CAPS_TYPE_INT, cdir)
254#define USB_EP_IN_BULK(n) USB_EP_BULK(n, "ep" #n "in-bulk", 1, \
255 USB_EP_CAPS_DIR_IN)
256#define USB_EP_OUT_BULK(n) USB_EP_BULK(n, "ep" #n "out-bulk", 0, \
257 USB_EP_CAPS_DIR_OUT)
258#define USB_EP_IN_ISO(n) USB_EP_ISO(n, "ep" #n "in-iso", 1, \
259 USB_EP_CAPS_DIR_IN)
260#define USB_EP_OUT_ISO(n) USB_EP_ISO(n, "ep" #n "out-iso", 0, \
261 USB_EP_CAPS_DIR_OUT)
262#define USB_EP_IN_INT(n) USB_EP_INT(n, "ep" #n "in-int", 1, \
263 USB_EP_CAPS_DIR_IN)
264#define USB_EP_CTRL USB_EP_DEF(0, "ep0", 0, CONTROL, EP0_FIFO_SIZE, \
265 USB_EP_CAPS_TYPE_CONTROL, USB_EP_CAPS_DIR_ALL)
266
267#define PXA_EP_DEF(_idx, _addr, dir, _type, maxpkt, _config, iface, altset) \
268{ \
269 .dev = &memory, \
270 .name = "ep" #_idx, \
271 .idx = _idx, .enabled = 0, \
272 .dir_in = dir, .addr = _addr, \
273 .config = _config, .interface = iface, .alternate = altset, \
274 .type = _type, .fifo_size = maxpkt, \
275}
276#define PXA_EP_BULK(_idx, addr, dir, config, iface, alt) \
277 PXA_EP_DEF(_idx, addr, dir, USB_ENDPOINT_XFER_BULK, BULK_FIFO_SIZE, \
278 config, iface, alt)
279#define PXA_EP_ISO(_idx, addr, dir, config, iface, alt) \
280 PXA_EP_DEF(_idx, addr, dir, USB_ENDPOINT_XFER_ISOC, ISO_FIFO_SIZE, \
281 config, iface, alt)
282#define PXA_EP_INT(_idx, addr, dir, config, iface, alt) \
283 PXA_EP_DEF(_idx, addr, dir, USB_ENDPOINT_XFER_INT, INT_FIFO_SIZE, \
284 config, iface, alt)
285#define PXA_EP_IN_BULK(i, adr, c, f, a) PXA_EP_BULK(i, adr, 1, c, f, a)
286#define PXA_EP_OUT_BULK(i, adr, c, f, a) PXA_EP_BULK(i, adr, 0, c, f, a)
287#define PXA_EP_IN_ISO(i, adr, c, f, a) PXA_EP_ISO(i, adr, 1, c, f, a)
288#define PXA_EP_OUT_ISO(i, adr, c, f, a) PXA_EP_ISO(i, adr, 0, c, f, a)
289#define PXA_EP_IN_INT(i, adr, c, f, a) PXA_EP_INT(i, adr, 1, c, f, a)
290#define PXA_EP_CTRL PXA_EP_DEF(0, 0, 0, 0, EP0_FIFO_SIZE, 0, 0, 0)
291
292struct pxa27x_udc;
293
294struct stats {
295 unsigned long in_ops;
296 unsigned long out_ops;
297 unsigned long in_bytes;
298 unsigned long out_bytes;
299 unsigned long irqs;
300};
301
302/**
303 * struct udc_usb_ep - container of each usb_ep structure
304 * @usb_ep: usb endpoint
305 * @desc: usb descriptor, especially type and address
306 * @dev: udc managing this endpoint
307 * @pxa_ep: matching pxa_ep (cache of find_pxa_ep() call)
308 */
309struct udc_usb_ep {
310 struct usb_ep usb_ep;
311 struct usb_endpoint_descriptor desc;
312 struct pxa_udc *dev;
313 struct pxa_ep *pxa_ep;
314};
315
316/**
317 * struct pxa_ep - pxa endpoint
318 * @dev: udc device
319 * @queue: requests queue
320 * @lock: lock to pxa_ep data (queues and stats)
321 * @enabled: true when endpoint enabled (not stopped by gadget layer)
322 * @in_handle_ep: number of recursions of handle_ep() function
323 * Prevents deadlocks or infinite recursions of types :
324 * irq->handle_ep()->req_done()->req.complete()->pxa_ep_queue()->handle_ep()
325 * or
326 * pxa_ep_queue()->handle_ep()->req_done()->req.complete()->pxa_ep_queue()
327 * @idx: endpoint index (1 => epA, 2 => epB, ..., 24 => epX)
328 * @name: endpoint name (for trace/debug purpose)
329 * @dir_in: 1 if IN endpoint, 0 if OUT endpoint
330 * @addr: usb endpoint number
331 * @config: configuration in which this endpoint is active
332 * @interface: interface in which this endpoint is active
333 * @alternate: altsetting in which this endpoitn is active
334 * @fifo_size: max packet size in the endpoint fifo
335 * @type: endpoint type (bulk, iso, int, ...)
336 * @udccsr_value: save register of UDCCSR0 for suspend/resume
337 * @udccr_value: save register of UDCCR for suspend/resume
338 * @stats: endpoint statistics
339 *
340 * The *PROBLEM* is that pxa's endpoint configuration scheme is both misdesigned
341 * (cares about config/interface/altsetting, thus placing needless limits on
342 * device capability) and full of implementation bugs forcing it to be set up
343 * for use more or less like a pxa255.
344 *
345 * As we define the pxa_ep statically, we must guess all needed pxa_ep for all
346 * gadget which may work with this udc driver.
347 */
348struct pxa_ep {
349 struct pxa_udc *dev;
350
351 struct list_head queue;
352 spinlock_t lock; /* Protects this structure */
353 /* (queues, stats) */
354 unsigned enabled:1;
355 unsigned in_handle_ep:1;
356
357 unsigned idx:5;
358 char *name;
359
360 /*
361 * Specific pxa endpoint data, needed for hardware initialization
362 */
363 unsigned dir_in:1;
364 unsigned addr:4;
365 unsigned config:2;
366 unsigned interface:3;
367 unsigned alternate:3;
368 unsigned fifo_size;
369 unsigned type;
370
371#ifdef CONFIG_PM
372 u32 udccsr_value;
373 u32 udccr_value;
374#endif
375 struct stats stats;
376};
377
378/**
379 * struct pxa27x_request - container of each usb_request structure
380 * @req: usb request
381 * @udc_usb_ep: usb endpoint the request was submitted on
382 * @in_use: sanity check if request already queued on an pxa_ep
383 * @queue: linked list of requests, linked on pxa_ep->queue
384 */
385struct pxa27x_request {
386 struct usb_request req;
387 struct udc_usb_ep *udc_usb_ep;
388 unsigned in_use:1;
389 struct list_head queue;
390};
391
392enum ep0_state {
393 WAIT_FOR_SETUP,
394 SETUP_STAGE,
395 IN_DATA_STAGE,
396 OUT_DATA_STAGE,
397 IN_STATUS_STAGE,
398 OUT_STATUS_STAGE,
399 STALL,
400 WAIT_ACK_SET_CONF_INTERF
401};
402
403static char *ep0_state_name[] = {
404 "WAIT_FOR_SETUP", "SETUP_STAGE", "IN_DATA_STAGE", "OUT_DATA_STAGE",
405 "IN_STATUS_STAGE", "OUT_STATUS_STAGE", "STALL",
406 "WAIT_ACK_SET_CONF_INTERF"
407};
408#define EP0_STNAME(udc) ep0_state_name[(udc)->ep0state]
409
410#define EP0_FIFO_SIZE 16U
411#define BULK_FIFO_SIZE 64U
412#define ISO_FIFO_SIZE 256U
413#define INT_FIFO_SIZE 16U
414
415struct udc_stats {
416 unsigned long irqs_reset;
417 unsigned long irqs_suspend;
418 unsigned long irqs_resume;
419 unsigned long irqs_reconfig;
420};
421
422#define NR_USB_ENDPOINTS (1 + 5) /* ep0 + ep1in-bulk + .. + ep3in-iso */
423#define NR_PXA_ENDPOINTS (1 + 14) /* ep0 + epA + epB + .. + epX */
424
425/**
426 * struct pxa_udc - udc structure
427 * @regs: mapped IO space
428 * @irq: udc irq
429 * @clk: udc clock
430 * @usb_gadget: udc gadget structure
431 * @driver: bound gadget (zero, g_ether, g_mass_storage, ...)
432 * @dev: device
433 * @udc_command: machine specific function to activate D+ pullup
434 * @gpiod: gpio descriptor of gpio for D+ pullup (or NULL if none)
435 * @transceiver: external transceiver to handle vbus sense and D+ pullup
436 * @ep0state: control endpoint state machine state
437 * @stats: statistics on udc usage
438 * @udc_usb_ep: array of usb endpoints offered by the gadget
439 * @pxa_ep: array of pxa available endpoints
440 * @enabled: UDC was enabled by a previous udc_enable()
441 * @pullup_on: if pullup resistor connected to D+ pin
442 * @pullup_resume: if pullup resistor should be connected to D+ pin on resume
443 * @config: UDC active configuration
444 * @last_interface: UDC interface of the last SET_INTERFACE host request
445 * @last_alternate: UDC altsetting of the last SET_INTERFACE host request
446 * @udccsr0: save of udccsr0 in case of suspend
447 * @debugfs_root: root entry of debug filesystem
448 * @debugfs_state: debugfs entry for "udcstate"
449 * @debugfs_queues: debugfs entry for "queues"
450 * @debugfs_eps: debugfs entry for "epstate"
451 */
452struct pxa_udc {
453 void __iomem *regs;
454 int irq;
455 struct clk *clk;
456
457 struct usb_gadget gadget;
458 struct usb_gadget_driver *driver;
459 struct device *dev;
460 void (*udc_command)(int);
461 struct gpio_desc *gpiod;
462 struct usb_phy *transceiver;
463
464 enum ep0_state ep0state;
465 struct udc_stats stats;
466
467 struct udc_usb_ep udc_usb_ep[NR_USB_ENDPOINTS];
468 struct pxa_ep pxa_ep[NR_PXA_ENDPOINTS];
469
470 unsigned enabled:1;
471 unsigned pullup_on:1;
472 unsigned pullup_resume:1;
473 unsigned vbus_sensed:1;
474 unsigned config:2;
475 unsigned last_interface:3;
476 unsigned last_alternate:3;
477
478#ifdef CONFIG_PM
479 unsigned udccsr0;
480#endif
481#ifdef CONFIG_USB_GADGET_DEBUG_FS
482 struct dentry *debugfs_root;
483 struct dentry *debugfs_state;
484 struct dentry *debugfs_queues;
485 struct dentry *debugfs_eps;
486#endif
487};
488#define to_pxa(g) (container_of((g), struct pxa_udc, gadget))
489
490static inline struct pxa_udc *to_gadget_udc(struct usb_gadget *gadget)
491{
492 return container_of(gadget, struct pxa_udc, gadget);
493}
494
495/*
496 * Debugging/message support
497 */
498#define ep_dbg(ep, fmt, arg...) \
499 dev_dbg(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg)
500#define ep_vdbg(ep, fmt, arg...) \
501 dev_vdbg(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg)
502#define ep_err(ep, fmt, arg...) \
503 dev_err(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg)
504#define ep_info(ep, fmt, arg...) \
505 dev_info(ep->dev->dev, "%s:%s: " fmt, EPNAME(ep), __func__, ## arg)
506#define ep_warn(ep, fmt, arg...) \
507 dev_warn(ep->dev->dev, "%s:%s:" fmt, EPNAME(ep), __func__, ## arg)
508
509#endif /* __LINUX_USB_GADGET_PXA27X_H */