blob: 29dfefe1c726d490318faea707345a17ca9a8a2d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
6 * (C) Copyright 2002 Hewlett-Packard Company
7 *
8 * Bus Glue for pxa27x
9 *
10 * Written by Christopher Hoover <ch@hpl.hp.com>
11 * Based on fragments of previous driver by Russell King et al.
12 *
13 * Modified for LH7A404 from ohci-sa1111.c
14 * by Durgesh Pattamatta <pattamattad@sharpsec.com>
15 *
16 * Modified for pxa27x from ohci-lh7a404.c
17 * by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
18 *
19 * This file is licenced under the GPL.
20 */
21
22#include <linux/device.h>
Tim Schmielau4e57b682005-10-30 15:03:48 -080023#include <linux/signal.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010024#include <linux/platform_device.h>
eric miaoa8bcf412007-12-12 08:53:25 +080025#include <linux/clk.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010026#include <mach/ohci.h>
Igor Grinberg6dc3ae82010-07-27 15:06:59 +030027#include <mach/pxa3xx-u2d.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
Eric Miao596050b2008-09-27 16:12:32 +080029/*
30 * UHC: USB Host Controller (OHCI-like) register definitions
31 */
Eric Miao0c392ed2008-10-04 12:57:21 +080032#define UHCREV (0x0000) /* UHC HCI Spec Revision */
33#define UHCHCON (0x0004) /* UHC Host Control Register */
34#define UHCCOMS (0x0008) /* UHC Command Status Register */
35#define UHCINTS (0x000C) /* UHC Interrupt Status Register */
36#define UHCINTE (0x0010) /* UHC Interrupt Enable */
37#define UHCINTD (0x0014) /* UHC Interrupt Disable */
38#define UHCHCCA (0x0018) /* UHC Host Controller Comm. Area */
39#define UHCPCED (0x001C) /* UHC Period Current Endpt Descr */
40#define UHCCHED (0x0020) /* UHC Control Head Endpt Descr */
41#define UHCCCED (0x0024) /* UHC Control Current Endpt Descr */
42#define UHCBHED (0x0028) /* UHC Bulk Head Endpt Descr */
43#define UHCBCED (0x002C) /* UHC Bulk Current Endpt Descr */
44#define UHCDHEAD (0x0030) /* UHC Done Head */
45#define UHCFMI (0x0034) /* UHC Frame Interval */
46#define UHCFMR (0x0038) /* UHC Frame Remaining */
47#define UHCFMN (0x003C) /* UHC Frame Number */
48#define UHCPERS (0x0040) /* UHC Periodic Start */
49#define UHCLS (0x0044) /* UHC Low Speed Threshold */
Eric Miao596050b2008-09-27 16:12:32 +080050
Eric Miao0c392ed2008-10-04 12:57:21 +080051#define UHCRHDA (0x0048) /* UHC Root Hub Descriptor A */
Eric Miao596050b2008-09-27 16:12:32 +080052#define UHCRHDA_NOCP (1 << 12) /* No over current protection */
53#define UHCRHDA_OCPM (1 << 11) /* Over Current Protection Mode */
54#define UHCRHDA_POTPGT(x) \
55 (((x) & 0xff) << 24) /* Power On To Power Good Time */
56
Eric Miao0c392ed2008-10-04 12:57:21 +080057#define UHCRHDB (0x004C) /* UHC Root Hub Descriptor B */
58#define UHCRHS (0x0050) /* UHC Root Hub Status */
59#define UHCRHPS1 (0x0054) /* UHC Root Hub Port 1 Status */
60#define UHCRHPS2 (0x0058) /* UHC Root Hub Port 2 Status */
61#define UHCRHPS3 (0x005C) /* UHC Root Hub Port 3 Status */
Eric Miao596050b2008-09-27 16:12:32 +080062
Eric Miao0c392ed2008-10-04 12:57:21 +080063#define UHCSTAT (0x0060) /* UHC Status Register */
Eric Miao596050b2008-09-27 16:12:32 +080064#define UHCSTAT_UPS3 (1 << 16) /* USB Power Sense Port3 */
65#define UHCSTAT_SBMAI (1 << 15) /* System Bus Master Abort Interrupt*/
66#define UHCSTAT_SBTAI (1 << 14) /* System Bus Target Abort Interrupt*/
67#define UHCSTAT_UPRI (1 << 13) /* USB Port Resume Interrupt */
68#define UHCSTAT_UPS2 (1 << 12) /* USB Power Sense Port 2 */
69#define UHCSTAT_UPS1 (1 << 11) /* USB Power Sense Port 1 */
70#define UHCSTAT_HTA (1 << 10) /* HCI Target Abort */
71#define UHCSTAT_HBA (1 << 8) /* HCI Buffer Active */
72#define UHCSTAT_RWUE (1 << 7) /* HCI Remote Wake Up Event */
73
Eric Miao0c392ed2008-10-04 12:57:21 +080074#define UHCHR (0x0064) /* UHC Reset Register */
Eric Miao596050b2008-09-27 16:12:32 +080075#define UHCHR_SSEP3 (1 << 11) /* Sleep Standby Enable for Port3 */
76#define UHCHR_SSEP2 (1 << 10) /* Sleep Standby Enable for Port2 */
77#define UHCHR_SSEP1 (1 << 9) /* Sleep Standby Enable for Port1 */
78#define UHCHR_PCPL (1 << 7) /* Power control polarity low */
79#define UHCHR_PSPL (1 << 6) /* Power sense polarity low */
80#define UHCHR_SSE (1 << 5) /* Sleep Standby Enable */
81#define UHCHR_UIT (1 << 4) /* USB Interrupt Test */
82#define UHCHR_SSDC (1 << 3) /* Simulation Scale Down Clock */
83#define UHCHR_CGR (1 << 2) /* Clock Generation Reset */
84#define UHCHR_FHR (1 << 1) /* Force Host Controller Reset */
85#define UHCHR_FSBIR (1 << 0) /* Force System Bus Iface Reset */
86
Eric Miao0c392ed2008-10-04 12:57:21 +080087#define UHCHIE (0x0068) /* UHC Interrupt Enable Register*/
Eric Miao596050b2008-09-27 16:12:32 +080088#define UHCHIE_UPS3IE (1 << 14) /* Power Sense Port3 IntEn */
89#define UHCHIE_UPRIE (1 << 13) /* Port Resume IntEn */
90#define UHCHIE_UPS2IE (1 << 12) /* Power Sense Port2 IntEn */
91#define UHCHIE_UPS1IE (1 << 11) /* Power Sense Port1 IntEn */
92#define UHCHIE_TAIE (1 << 10) /* HCI Interface Transfer Abort
93 Interrupt Enable*/
94#define UHCHIE_HBAIE (1 << 8) /* HCI Buffer Active IntEn */
95#define UHCHIE_RWIE (1 << 7) /* Remote Wake-up IntEn */
96
Eric Miao0c392ed2008-10-04 12:57:21 +080097#define UHCHIT (0x006C) /* UHC Interrupt Test register */
Eric Miao596050b2008-09-27 16:12:32 +080098
Linus Torvalds1da177e2005-04-16 15:20:36 -070099#define PXA_UHC_MAX_PORTNUM 3
100
Eric Miao0c392ed2008-10-04 12:57:21 +0800101struct pxa27x_ohci {
102 /* must be 1st member here for hcd_to_ohci() to work */
103 struct ohci_hcd ohci;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
Eric Miao0c392ed2008-10-04 12:57:21 +0800105 struct device *dev;
106 struct clk *clk;
107 void __iomem *mmio_base;
108};
109
110#define to_pxa27x_ohci(hcd) (struct pxa27x_ohci *)hcd_to_ohci(hcd)
eric miaoa8bcf412007-12-12 08:53:25 +0800111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112/*
113 PMM_NPS_MODE -- PMM Non-power switching mode
114 Ports are powered continuously.
115
116 PMM_GLOBAL_MODE -- PMM global switching mode
117 All ports are powered at the same time.
118
119 PMM_PERPORT_MODE -- PMM per port switching mode
120 Ports are powered individually.
121 */
Eric Miao0c392ed2008-10-04 12:57:21 +0800122static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *ohci, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123{
Eric Miao0c392ed2008-10-04 12:57:21 +0800124 uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
125 uint32_t uhcrhdb = __raw_readl(ohci->mmio_base + UHCRHDB);
126
127 switch (mode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 case PMM_NPS_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800129 uhcrhda |= RH_A_NPS;
David Brownelldd9048a2006-12-05 03:18:31 -0800130 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 case PMM_GLOBAL_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800132 uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 break;
134 case PMM_PERPORT_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800135 uhcrhda &= ~(RH_A_NPS);
136 uhcrhda |= RH_A_PSM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
138 /* Set port power control mask bits, only 3 ports. */
Eric Miao0c392ed2008-10-04 12:57:21 +0800139 uhcrhdb |= (0x7<<17);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 break;
141 default:
142 printk( KERN_ERR
David Brownelldd9048a2006-12-05 03:18:31 -0800143 "Invalid mode %d, set to non-power switch mode.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 mode );
145
Eric Miao0c392ed2008-10-04 12:57:21 +0800146 uhcrhda |= RH_A_NPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 }
148
Eric Miao0c392ed2008-10-04 12:57:21 +0800149 __raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
150 __raw_writel(uhcrhdb, ohci->mmio_base + UHCRHDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 return 0;
152}
153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154extern int usb_disabled(void);
155
156/*-------------------------------------------------------------------------*/
157
Eric Miao0c392ed2008-10-04 12:57:21 +0800158static inline void pxa27x_setup_hc(struct pxa27x_ohci *ohci,
159 struct pxaohci_platform_data *inf)
Eric Miao097b5332008-09-27 15:49:57 +0800160{
Eric Miao0c392ed2008-10-04 12:57:21 +0800161 uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
162 uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
Eric Miao097b5332008-09-27 15:49:57 +0800163
164 if (inf->flags & ENABLE_PORT1)
165 uhchr &= ~UHCHR_SSEP1;
166
167 if (inf->flags & ENABLE_PORT2)
168 uhchr &= ~UHCHR_SSEP2;
169
170 if (inf->flags & ENABLE_PORT3)
171 uhchr &= ~UHCHR_SSEP3;
172
173 if (inf->flags & POWER_CONTROL_LOW)
174 uhchr |= UHCHR_PCPL;
175
176 if (inf->flags & POWER_SENSE_LOW)
177 uhchr |= UHCHR_PSPL;
178
179 if (inf->flags & NO_OC_PROTECTION)
180 uhcrhda |= UHCRHDA_NOCP;
Aric Blumer7b4361f2009-07-30 13:26:58 -0400181 else
182 uhcrhda &= ~UHCRHDA_NOCP;
Eric Miao097b5332008-09-27 15:49:57 +0800183
184 if (inf->flags & OC_MODE_PERPORT)
185 uhcrhda |= UHCRHDA_OCPM;
Aric Blumer7b4361f2009-07-30 13:26:58 -0400186 else
187 uhcrhda &= ~UHCRHDA_OCPM;
Eric Miao097b5332008-09-27 15:49:57 +0800188
189 if (inf->power_on_delay) {
190 uhcrhda &= ~UHCRHDA_POTPGT(0xff);
191 uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
192 }
193
Eric Miao0c392ed2008-10-04 12:57:21 +0800194 __raw_writel(uhchr, ohci->mmio_base + UHCHR);
195 __raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
196}
197
198static inline void pxa27x_reset_hc(struct pxa27x_ohci *ohci)
199{
200 uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
201
202 __raw_writel(uhchr | UHCHR_FHR, ohci->mmio_base + UHCHR);
203 udelay(11);
204 __raw_writel(uhchr & ~UHCHR_FHR, ohci->mmio_base + UHCHR);
Eric Miao097b5332008-09-27 15:49:57 +0800205}
206
Eric Miao59376cc2010-07-14 21:17:25 +0800207#ifdef CONFIG_PXA27x
Eric Miao0cb0b0d2008-10-04 12:45:39 +0800208extern void pxa27x_clear_otgph(void);
209#else
210#define pxa27x_clear_otgph() do {} while (0)
211#endif
212
Eric Miao0c392ed2008-10-04 12:57:21 +0800213static int pxa27x_start_hc(struct pxa27x_ohci *ohci, struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214{
Richard Purdie81f280e2005-11-12 14:22:11 +0000215 int retval = 0;
216 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800217 uint32_t uhchr;
Richard Purdie81f280e2005-11-12 14:22:11 +0000218
219 inf = dev->platform_data;
220
Eric Miao0c392ed2008-10-04 12:57:21 +0800221 clk_enable(ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222
Eric Miao0c392ed2008-10-04 12:57:21 +0800223 pxa27x_reset_hc(ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224
Eric Miao0c392ed2008-10-04 12:57:21 +0800225 uhchr = __raw_readl(ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
226 __raw_writel(uhchr, ohci->mmio_base + UHCHR);
227
228 while (__raw_readl(ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 cpu_relax();
230
Eric Miao0c392ed2008-10-04 12:57:21 +0800231 pxa27x_setup_hc(ohci, inf);
Eric Miao097b5332008-09-27 15:49:57 +0800232
Richard Purdie81f280e2005-11-12 14:22:11 +0000233 if (inf->init)
234 retval = inf->init(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Richard Purdie81f280e2005-11-12 14:22:11 +0000236 if (retval < 0)
237 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
Igor Grinberg6dc3ae82010-07-27 15:06:59 +0300239 if (cpu_is_pxa3xx())
240 pxa3xx_u2d_start_hc(&ohci_to_hcd(&ohci->ohci)->self);
241
Eric Miao0c392ed2008-10-04 12:57:21 +0800242 uhchr = __raw_readl(ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
243 __raw_writel(uhchr, ohci->mmio_base + UHCHR);
244 __raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, ohci->mmio_base + UHCHIE);
David Brownell155faf52005-08-31 11:54:09 -0700245
246 /* Clear any OTG Pin Hold */
Eric Miao0cb0b0d2008-10-04 12:45:39 +0800247 pxa27x_clear_otgph();
Richard Purdie81f280e2005-11-12 14:22:11 +0000248 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249}
250
Eric Miao0c392ed2008-10-04 12:57:21 +0800251static void pxa27x_stop_hc(struct pxa27x_ohci *ohci, struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
Richard Purdie81f280e2005-11-12 14:22:11 +0000253 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800254 uint32_t uhccoms;
Richard Purdie81f280e2005-11-12 14:22:11 +0000255
256 inf = dev->platform_data;
257
Igor Grinberg6dc3ae82010-07-27 15:06:59 +0300258 if (cpu_is_pxa3xx())
259 pxa3xx_u2d_stop_hc(&ohci_to_hcd(&ohci->ohci)->self);
260
Richard Purdie81f280e2005-11-12 14:22:11 +0000261 if (inf->exit)
262 inf->exit(dev);
263
Eric Miao0c392ed2008-10-04 12:57:21 +0800264 pxa27x_reset_hc(ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
Eric Miao0c392ed2008-10-04 12:57:21 +0800266 /* Host Controller Reset */
267 uhccoms = __raw_readl(ohci->mmio_base + UHCCOMS) | 0x01;
268 __raw_writel(uhccoms, ohci->mmio_base + UHCCOMS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 udelay(10);
270
Eric Miao0c392ed2008-10-04 12:57:21 +0800271 clk_disable(ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272}
273
274
275/*-------------------------------------------------------------------------*/
276
277/* configure so an HC device and id are always provided */
278/* always called with process context; sleeping is OK */
279
280
281/**
282 * usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
283 * Context: !in_interrupt()
284 *
285 * Allocates basic resources for this USB host controller, and
286 * then invokes the start() method for the HCD associated with it
287 * through the hotplug entry's driver_data.
288 *
289 */
Richard Purdie81f280e2005-11-12 14:22:11 +0000290int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291{
Eric Miao84bab732008-10-03 22:37:21 +0800292 int retval, irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 struct usb_hcd *hcd;
Richard Purdie81f280e2005-11-12 14:22:11 +0000294 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800295 struct pxa27x_ohci *ohci;
Eric Miao84bab732008-10-03 22:37:21 +0800296 struct resource *r;
Eric Miao0c392ed2008-10-04 12:57:21 +0800297 struct clk *usb_clk;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
Richard Purdie81f280e2005-11-12 14:22:11 +0000299 inf = pdev->dev.platform_data;
300
301 if (!inf)
302 return -ENODEV;
303
Eric Miao84bab732008-10-03 22:37:21 +0800304 irq = platform_get_irq(pdev, 0);
305 if (irq < 0) {
306 pr_err("no resource of IORESOURCE_IRQ");
307 return -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 }
309
Russell Kinge0d8b132008-11-11 17:52:32 +0000310 usb_clk = clk_get(&pdev->dev, NULL);
eric miaoa8bcf412007-12-12 08:53:25 +0800311 if (IS_ERR(usb_clk))
312 return PTR_ERR(usb_clk);
313
Richard Purdie81f280e2005-11-12 14:22:11 +0000314 hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
Julia Lawall7febe2b2011-06-01 19:10:06 +0200315 if (!hcd) {
316 retval = -ENOMEM;
317 goto err0;
318 }
Eric Miao84bab732008-10-03 22:37:21 +0800319
320 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
321 if (!r) {
322 pr_err("no resource of IORESOURCE_MEM");
323 retval = -ENXIO;
324 goto err1;
325 }
326
327 hcd->rsrc_start = r->start;
328 hcd->rsrc_len = resource_size(r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
330 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
331 pr_debug("request_mem_region failed");
332 retval = -EBUSY;
333 goto err1;
334 }
335
336 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
337 if (!hcd->regs) {
338 pr_debug("ioremap failed");
339 retval = -ENOMEM;
340 goto err2;
341 }
342
Eric Miao0c392ed2008-10-04 12:57:21 +0800343 /* initialize "struct pxa27x_ohci" */
344 ohci = (struct pxa27x_ohci *)hcd_to_ohci(hcd);
345 ohci->dev = &pdev->dev;
346 ohci->clk = usb_clk;
347 ohci->mmio_base = (void __iomem *)hcd->regs;
348
349 if ((retval = pxa27x_start_hc(ohci, &pdev->dev)) < 0) {
Richard Purdie81f280e2005-11-12 14:22:11 +0000350 pr_debug("pxa27x_start_hc failed");
351 goto err3;
352 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
354 /* Select Power Management Mode */
Eric Miao0c392ed2008-10-04 12:57:21 +0800355 pxa27x_ohci_select_pmm(ohci, inf->port_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
Richard Purdie0c27c5d2006-06-08 22:44:07 +0100357 if (inf->power_budget)
358 hcd->power_budget = inf->power_budget;
359
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 ohci_hcd_init(hcd_to_ohci(hcd));
361
Yong Zhangb5dd18d2011-09-07 16:10:52 +0800362 retval = usb_add_hcd(hcd, irq, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 if (retval == 0)
364 return retval;
365
Eric Miao0c392ed2008-10-04 12:57:21 +0800366 pxa27x_stop_hc(ohci, &pdev->dev);
Richard Purdie81f280e2005-11-12 14:22:11 +0000367 err3:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 iounmap(hcd->regs);
369 err2:
370 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
371 err1:
372 usb_put_hcd(hcd);
Julia Lawall7febe2b2011-06-01 19:10:06 +0200373 err0:
eric miaoa8bcf412007-12-12 08:53:25 +0800374 clk_put(usb_clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 return retval;
376}
377
378
379/* may be called without controller electrically present */
380/* may be called with controller, bus, and devices active */
381
382/**
383 * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
384 * @dev: USB Host Controller being removed
385 * Context: !in_interrupt()
386 *
387 * Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
388 * the HCD's stop() method. It is always called from a thread
389 * context, normally "rmmod", "apmd", or something similar.
390 *
391 */
Richard Purdie81f280e2005-11-12 14:22:11 +0000392void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393{
Eric Miao0c392ed2008-10-04 12:57:21 +0800394 struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
395
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 usb_remove_hcd(hcd);
Eric Miao0c392ed2008-10-04 12:57:21 +0800397 pxa27x_stop_hc(ohci, &pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 iounmap(hcd->regs);
399 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
400 usb_put_hcd(hcd);
Eric Miao0c392ed2008-10-04 12:57:21 +0800401 clk_put(ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402}
403
404/*-------------------------------------------------------------------------*/
405
406static int __devinit
407ohci_pxa27x_start (struct usb_hcd *hcd)
408{
409 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
410 int ret;
411
412 ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
413
David Brownellfdd13b32005-08-31 11:52:57 -0700414 /* The value of NDP in roothub_a is incorrect on this hardware */
415 ohci->num_ports = 3;
416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 if ((ret = ohci_init(ohci)) < 0)
418 return ret;
419
420 if ((ret = ohci_run (ohci)) < 0) {
421 err ("can't start %s", hcd->self.bus_name);
422 ohci_stop (hcd);
423 return ret;
424 }
425
426 return 0;
427}
428
429/*-------------------------------------------------------------------------*/
430
431static const struct hc_driver ohci_pxa27x_hc_driver = {
432 .description = hcd_name,
433 .product_desc = "PXA27x OHCI",
Eric Miao0c392ed2008-10-04 12:57:21 +0800434 .hcd_priv_size = sizeof(struct pxa27x_ohci),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435
436 /*
437 * generic hardware linkage
438 */
439 .irq = ohci_irq,
440 .flags = HCD_USB11 | HCD_MEMORY,
441
442 /*
443 * basic lifecycle operations
444 */
445 .start = ohci_pxa27x_start,
446 .stop = ohci_stop,
David Brownelldd9048a2006-12-05 03:18:31 -0800447 .shutdown = ohci_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
449 /*
450 * managing i/o requests and associated device resources
451 */
452 .urb_enqueue = ohci_urb_enqueue,
453 .urb_dequeue = ohci_urb_dequeue,
454 .endpoint_disable = ohci_endpoint_disable,
455
456 /*
457 * scheduling support
458 */
459 .get_frame_number = ohci_get_frame,
460
461 /*
462 * root hub support
463 */
464 .hub_status_data = ohci_hub_status_data,
465 .hub_control = ohci_hub_control,
David Brownell8ad7fe12005-09-13 19:59:11 -0700466#ifdef CONFIG_PM
Alan Stern0c0382e2005-10-13 17:08:02 -0400467 .bus_suspend = ohci_bus_suspend,
468 .bus_resume = ohci_bus_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469#endif
David Brownell92936772005-09-22 22:32:11 -0700470 .start_port_reset = ohci_start_port_reset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471};
472
473/*-------------------------------------------------------------------------*/
474
Russell King3ae5eae2005-11-09 22:32:44 +0000475static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 pr_debug ("In ohci_hcd_pxa27x_drv_probe");
478
479 if (usb_disabled())
480 return -ENODEV;
481
Richard Purdie81f280e2005-11-12 14:22:11 +0000482 return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483}
484
Russell King3ae5eae2005-11-09 22:32:44 +0000485static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486{
Russell King3ae5eae2005-11-09 22:32:44 +0000487 struct usb_hcd *hcd = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488
489 usb_hcd_pxa27x_remove(hcd, pdev);
Richard Purdiea5e36d22005-11-28 22:15:46 +0000490 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 return 0;
492}
493
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300494#ifdef CONFIG_PM
495static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496{
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300497 struct usb_hcd *hcd = dev_get_drvdata(dev);
Eric Miao0c392ed2008-10-04 12:57:21 +0800498 struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000499
Eric Miao0c392ed2008-10-04 12:57:21 +0800500 if (time_before(jiffies, ohci->ohci.next_statechange))
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000501 msleep(5);
Eric Miao0c392ed2008-10-04 12:57:21 +0800502 ohci->ohci.next_statechange = jiffies;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000503
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300504 pxa27x_stop_hc(ohci, dev);
Richard Purdiea5e36d22005-11-28 22:15:46 +0000505 hcd->state = HC_STATE_SUSPENDED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506
507 return 0;
508}
509
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300510static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511{
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300512 struct usb_hcd *hcd = dev_get_drvdata(dev);
Eric Miao0c392ed2008-10-04 12:57:21 +0800513 struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
Aric D. Blumera75d0482009-07-30 13:42:30 -0400514 struct pxaohci_platform_data *inf = dev->platform_data;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000515 int status;
516
Eric Miao0c392ed2008-10-04 12:57:21 +0800517 if (time_before(jiffies, ohci->ohci.next_statechange))
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000518 msleep(5);
Eric Miao0c392ed2008-10-04 12:57:21 +0800519 ohci->ohci.next_statechange = jiffies;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000520
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300521 if ((status = pxa27x_start_hc(ohci, dev)) < 0)
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000522 return status;
523
Aric D. Blumera75d0482009-07-30 13:42:30 -0400524 /* Select Power Management Mode */
525 pxa27x_ohci_select_pmm(ohci, inf->port_mode);
526
Alan Stern43bbb7e2008-04-03 18:03:17 -0400527 ohci_finish_controller_resume(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 return 0;
529}
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300530
Alexey Dobriyan47145212009-12-14 18:00:08 -0800531static const struct dev_pm_ops ohci_hcd_pxa27x_pm_ops = {
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300532 .suspend = ohci_hcd_pxa27x_drv_suspend,
533 .resume = ohci_hcd_pxa27x_drv_resume,
534};
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000535#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
Kay Sieversf4fce612008-04-10 21:29:22 -0700537/* work with hotplug and coldplug */
538MODULE_ALIAS("platform:pxa27x-ohci");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539
Russell King3ae5eae2005-11-09 22:32:44 +0000540static struct platform_driver ohci_hcd_pxa27x_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 .probe = ohci_hcd_pxa27x_drv_probe,
542 .remove = ohci_hcd_pxa27x_drv_remove,
David Brownelldd9048a2006-12-05 03:18:31 -0800543 .shutdown = usb_hcd_platform_shutdown,
Russell King3ae5eae2005-11-09 22:32:44 +0000544 .driver = {
545 .name = "pxa27x-ohci",
Kay Sieversf4fce612008-04-10 21:29:22 -0700546 .owner = THIS_MODULE,
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300547#ifdef CONFIG_PM
548 .pm = &ohci_hcd_pxa27x_pm_ops,
549#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000550 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551};
552