blob: e44dc2cbca24006e1b81d57cf589213ee823295c [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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Eric Miao596050b2008-09-27 16:12:32 +080028/*
29 * UHC: USB Host Controller (OHCI-like) register definitions
30 */
Eric Miao0c392ed2008-10-04 12:57:21 +080031#define UHCREV (0x0000) /* UHC HCI Spec Revision */
32#define UHCHCON (0x0004) /* UHC Host Control Register */
33#define UHCCOMS (0x0008) /* UHC Command Status Register */
34#define UHCINTS (0x000C) /* UHC Interrupt Status Register */
35#define UHCINTE (0x0010) /* UHC Interrupt Enable */
36#define UHCINTD (0x0014) /* UHC Interrupt Disable */
37#define UHCHCCA (0x0018) /* UHC Host Controller Comm. Area */
38#define UHCPCED (0x001C) /* UHC Period Current Endpt Descr */
39#define UHCCHED (0x0020) /* UHC Control Head Endpt Descr */
40#define UHCCCED (0x0024) /* UHC Control Current Endpt Descr */
41#define UHCBHED (0x0028) /* UHC Bulk Head Endpt Descr */
42#define UHCBCED (0x002C) /* UHC Bulk Current Endpt Descr */
43#define UHCDHEAD (0x0030) /* UHC Done Head */
44#define UHCFMI (0x0034) /* UHC Frame Interval */
45#define UHCFMR (0x0038) /* UHC Frame Remaining */
46#define UHCFMN (0x003C) /* UHC Frame Number */
47#define UHCPERS (0x0040) /* UHC Periodic Start */
48#define UHCLS (0x0044) /* UHC Low Speed Threshold */
Eric Miao596050b2008-09-27 16:12:32 +080049
Eric Miao0c392ed2008-10-04 12:57:21 +080050#define UHCRHDA (0x0048) /* UHC Root Hub Descriptor A */
Eric Miao596050b2008-09-27 16:12:32 +080051#define UHCRHDA_NOCP (1 << 12) /* No over current protection */
52#define UHCRHDA_OCPM (1 << 11) /* Over Current Protection Mode */
53#define UHCRHDA_POTPGT(x) \
54 (((x) & 0xff) << 24) /* Power On To Power Good Time */
55
Eric Miao0c392ed2008-10-04 12:57:21 +080056#define UHCRHDB (0x004C) /* UHC Root Hub Descriptor B */
57#define UHCRHS (0x0050) /* UHC Root Hub Status */
58#define UHCRHPS1 (0x0054) /* UHC Root Hub Port 1 Status */
59#define UHCRHPS2 (0x0058) /* UHC Root Hub Port 2 Status */
60#define UHCRHPS3 (0x005C) /* UHC Root Hub Port 3 Status */
Eric Miao596050b2008-09-27 16:12:32 +080061
Eric Miao0c392ed2008-10-04 12:57:21 +080062#define UHCSTAT (0x0060) /* UHC Status Register */
Eric Miao596050b2008-09-27 16:12:32 +080063#define UHCSTAT_UPS3 (1 << 16) /* USB Power Sense Port3 */
64#define UHCSTAT_SBMAI (1 << 15) /* System Bus Master Abort Interrupt*/
65#define UHCSTAT_SBTAI (1 << 14) /* System Bus Target Abort Interrupt*/
66#define UHCSTAT_UPRI (1 << 13) /* USB Port Resume Interrupt */
67#define UHCSTAT_UPS2 (1 << 12) /* USB Power Sense Port 2 */
68#define UHCSTAT_UPS1 (1 << 11) /* USB Power Sense Port 1 */
69#define UHCSTAT_HTA (1 << 10) /* HCI Target Abort */
70#define UHCSTAT_HBA (1 << 8) /* HCI Buffer Active */
71#define UHCSTAT_RWUE (1 << 7) /* HCI Remote Wake Up Event */
72
Eric Miao0c392ed2008-10-04 12:57:21 +080073#define UHCHR (0x0064) /* UHC Reset Register */
Eric Miao596050b2008-09-27 16:12:32 +080074#define UHCHR_SSEP3 (1 << 11) /* Sleep Standby Enable for Port3 */
75#define UHCHR_SSEP2 (1 << 10) /* Sleep Standby Enable for Port2 */
76#define UHCHR_SSEP1 (1 << 9) /* Sleep Standby Enable for Port1 */
77#define UHCHR_PCPL (1 << 7) /* Power control polarity low */
78#define UHCHR_PSPL (1 << 6) /* Power sense polarity low */
79#define UHCHR_SSE (1 << 5) /* Sleep Standby Enable */
80#define UHCHR_UIT (1 << 4) /* USB Interrupt Test */
81#define UHCHR_SSDC (1 << 3) /* Simulation Scale Down Clock */
82#define UHCHR_CGR (1 << 2) /* Clock Generation Reset */
83#define UHCHR_FHR (1 << 1) /* Force Host Controller Reset */
84#define UHCHR_FSBIR (1 << 0) /* Force System Bus Iface Reset */
85
Eric Miao0c392ed2008-10-04 12:57:21 +080086#define UHCHIE (0x0068) /* UHC Interrupt Enable Register*/
Eric Miao596050b2008-09-27 16:12:32 +080087#define UHCHIE_UPS3IE (1 << 14) /* Power Sense Port3 IntEn */
88#define UHCHIE_UPRIE (1 << 13) /* Port Resume IntEn */
89#define UHCHIE_UPS2IE (1 << 12) /* Power Sense Port2 IntEn */
90#define UHCHIE_UPS1IE (1 << 11) /* Power Sense Port1 IntEn */
91#define UHCHIE_TAIE (1 << 10) /* HCI Interface Transfer Abort
92 Interrupt Enable*/
93#define UHCHIE_HBAIE (1 << 8) /* HCI Buffer Active IntEn */
94#define UHCHIE_RWIE (1 << 7) /* Remote Wake-up IntEn */
95
Eric Miao0c392ed2008-10-04 12:57:21 +080096#define UHCHIT (0x006C) /* UHC Interrupt Test register */
Eric Miao596050b2008-09-27 16:12:32 +080097
Linus Torvalds1da177e2005-04-16 15:20:36 -070098#define PXA_UHC_MAX_PORTNUM 3
99
Eric Miao0c392ed2008-10-04 12:57:21 +0800100struct pxa27x_ohci {
101 /* must be 1st member here for hcd_to_ohci() to work */
102 struct ohci_hcd ohci;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
Eric Miao0c392ed2008-10-04 12:57:21 +0800104 struct device *dev;
105 struct clk *clk;
106 void __iomem *mmio_base;
107};
108
109#define to_pxa27x_ohci(hcd) (struct pxa27x_ohci *)hcd_to_ohci(hcd)
eric miaoa8bcf412007-12-12 08:53:25 +0800110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111/*
112 PMM_NPS_MODE -- PMM Non-power switching mode
113 Ports are powered continuously.
114
115 PMM_GLOBAL_MODE -- PMM global switching mode
116 All ports are powered at the same time.
117
118 PMM_PERPORT_MODE -- PMM per port switching mode
119 Ports are powered individually.
120 */
Eric Miao0c392ed2008-10-04 12:57:21 +0800121static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *ohci, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122{
Eric Miao0c392ed2008-10-04 12:57:21 +0800123 uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
124 uint32_t uhcrhdb = __raw_readl(ohci->mmio_base + UHCRHDB);
125
126 switch (mode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 case PMM_NPS_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800128 uhcrhda |= RH_A_NPS;
David Brownelldd9048a2006-12-05 03:18:31 -0800129 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 case PMM_GLOBAL_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800131 uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 break;
133 case PMM_PERPORT_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800134 uhcrhda &= ~(RH_A_NPS);
135 uhcrhda |= RH_A_PSM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
137 /* Set port power control mask bits, only 3 ports. */
Eric Miao0c392ed2008-10-04 12:57:21 +0800138 uhcrhdb |= (0x7<<17);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 break;
140 default:
141 printk( KERN_ERR
David Brownelldd9048a2006-12-05 03:18:31 -0800142 "Invalid mode %d, set to non-power switch mode.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 mode );
144
Eric Miao0c392ed2008-10-04 12:57:21 +0800145 uhcrhda |= RH_A_NPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 }
147
Eric Miao0c392ed2008-10-04 12:57:21 +0800148 __raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
149 __raw_writel(uhcrhdb, ohci->mmio_base + UHCRHDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 return 0;
151}
152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153extern int usb_disabled(void);
154
155/*-------------------------------------------------------------------------*/
156
Eric Miao0c392ed2008-10-04 12:57:21 +0800157static inline void pxa27x_setup_hc(struct pxa27x_ohci *ohci,
158 struct pxaohci_platform_data *inf)
Eric Miao097b5332008-09-27 15:49:57 +0800159{
Eric Miao0c392ed2008-10-04 12:57:21 +0800160 uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
161 uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
Eric Miao097b5332008-09-27 15:49:57 +0800162
163 if (inf->flags & ENABLE_PORT1)
164 uhchr &= ~UHCHR_SSEP1;
165
166 if (inf->flags & ENABLE_PORT2)
167 uhchr &= ~UHCHR_SSEP2;
168
169 if (inf->flags & ENABLE_PORT3)
170 uhchr &= ~UHCHR_SSEP3;
171
172 if (inf->flags & POWER_CONTROL_LOW)
173 uhchr |= UHCHR_PCPL;
174
175 if (inf->flags & POWER_SENSE_LOW)
176 uhchr |= UHCHR_PSPL;
177
178 if (inf->flags & NO_OC_PROTECTION)
179 uhcrhda |= UHCRHDA_NOCP;
180
181 if (inf->flags & OC_MODE_PERPORT)
182 uhcrhda |= UHCRHDA_OCPM;
183
184 if (inf->power_on_delay) {
185 uhcrhda &= ~UHCRHDA_POTPGT(0xff);
186 uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
187 }
188
Eric Miao0c392ed2008-10-04 12:57:21 +0800189 __raw_writel(uhchr, ohci->mmio_base + UHCHR);
190 __raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
191}
192
193static inline void pxa27x_reset_hc(struct pxa27x_ohci *ohci)
194{
195 uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
196
197 __raw_writel(uhchr | UHCHR_FHR, ohci->mmio_base + UHCHR);
198 udelay(11);
199 __raw_writel(uhchr & ~UHCHR_FHR, ohci->mmio_base + UHCHR);
Eric Miao097b5332008-09-27 15:49:57 +0800200}
201
Eric Miao0cb0b0d2008-10-04 12:45:39 +0800202#ifdef CONFIG_CPU_PXA27x
203extern void pxa27x_clear_otgph(void);
204#else
205#define pxa27x_clear_otgph() do {} while (0)
206#endif
207
Eric Miao0c392ed2008-10-04 12:57:21 +0800208static int pxa27x_start_hc(struct pxa27x_ohci *ohci, struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209{
Richard Purdie81f280e2005-11-12 14:22:11 +0000210 int retval = 0;
211 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800212 uint32_t uhchr;
Richard Purdie81f280e2005-11-12 14:22:11 +0000213
214 inf = dev->platform_data;
215
Eric Miao0c392ed2008-10-04 12:57:21 +0800216 clk_enable(ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
Eric Miao0c392ed2008-10-04 12:57:21 +0800218 pxa27x_reset_hc(ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
Eric Miao0c392ed2008-10-04 12:57:21 +0800220 uhchr = __raw_readl(ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
221 __raw_writel(uhchr, ohci->mmio_base + UHCHR);
222
223 while (__raw_readl(ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 cpu_relax();
225
Eric Miao0c392ed2008-10-04 12:57:21 +0800226 pxa27x_setup_hc(ohci, inf);
Eric Miao097b5332008-09-27 15:49:57 +0800227
Richard Purdie81f280e2005-11-12 14:22:11 +0000228 if (inf->init)
229 retval = inf->init(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230
Richard Purdie81f280e2005-11-12 14:22:11 +0000231 if (retval < 0)
232 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Eric Miao0c392ed2008-10-04 12:57:21 +0800234 uhchr = __raw_readl(ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
235 __raw_writel(uhchr, ohci->mmio_base + UHCHR);
236 __raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, ohci->mmio_base + UHCHIE);
David Brownell155faf52005-08-31 11:54:09 -0700237
238 /* Clear any OTG Pin Hold */
Eric Miao0cb0b0d2008-10-04 12:45:39 +0800239 pxa27x_clear_otgph();
Richard Purdie81f280e2005-11-12 14:22:11 +0000240 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241}
242
Eric Miao0c392ed2008-10-04 12:57:21 +0800243static void pxa27x_stop_hc(struct pxa27x_ohci *ohci, struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244{
Richard Purdie81f280e2005-11-12 14:22:11 +0000245 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800246 uint32_t uhccoms;
Richard Purdie81f280e2005-11-12 14:22:11 +0000247
248 inf = dev->platform_data;
249
250 if (inf->exit)
251 inf->exit(dev);
252
Eric Miao0c392ed2008-10-04 12:57:21 +0800253 pxa27x_reset_hc(ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
Eric Miao0c392ed2008-10-04 12:57:21 +0800255 /* Host Controller Reset */
256 uhccoms = __raw_readl(ohci->mmio_base + UHCCOMS) | 0x01;
257 __raw_writel(uhccoms, ohci->mmio_base + UHCCOMS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 udelay(10);
259
Eric Miao0c392ed2008-10-04 12:57:21 +0800260 clk_disable(ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261}
262
263
264/*-------------------------------------------------------------------------*/
265
266/* configure so an HC device and id are always provided */
267/* always called with process context; sleeping is OK */
268
269
270/**
271 * usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
272 * Context: !in_interrupt()
273 *
274 * Allocates basic resources for this USB host controller, and
275 * then invokes the start() method for the HCD associated with it
276 * through the hotplug entry's driver_data.
277 *
278 */
Richard Purdie81f280e2005-11-12 14:22:11 +0000279int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280{
Eric Miao84bab732008-10-03 22:37:21 +0800281 int retval, irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 struct usb_hcd *hcd;
Richard Purdie81f280e2005-11-12 14:22:11 +0000283 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800284 struct pxa27x_ohci *ohci;
Eric Miao84bab732008-10-03 22:37:21 +0800285 struct resource *r;
Eric Miao0c392ed2008-10-04 12:57:21 +0800286 struct clk *usb_clk;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Richard Purdie81f280e2005-11-12 14:22:11 +0000288 inf = pdev->dev.platform_data;
289
290 if (!inf)
291 return -ENODEV;
292
Eric Miao84bab732008-10-03 22:37:21 +0800293 irq = platform_get_irq(pdev, 0);
294 if (irq < 0) {
295 pr_err("no resource of IORESOURCE_IRQ");
296 return -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 }
298
Russell Kinge0d8b132008-11-11 17:52:32 +0000299 usb_clk = clk_get(&pdev->dev, NULL);
eric miaoa8bcf412007-12-12 08:53:25 +0800300 if (IS_ERR(usb_clk))
301 return PTR_ERR(usb_clk);
302
Richard Purdie81f280e2005-11-12 14:22:11 +0000303 hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 if (!hcd)
305 return -ENOMEM;
Eric Miao84bab732008-10-03 22:37:21 +0800306
307 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
308 if (!r) {
309 pr_err("no resource of IORESOURCE_MEM");
310 retval = -ENXIO;
311 goto err1;
312 }
313
314 hcd->rsrc_start = r->start;
315 hcd->rsrc_len = resource_size(r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
317 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
318 pr_debug("request_mem_region failed");
319 retval = -EBUSY;
320 goto err1;
321 }
322
323 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
324 if (!hcd->regs) {
325 pr_debug("ioremap failed");
326 retval = -ENOMEM;
327 goto err2;
328 }
329
Eric Miao0c392ed2008-10-04 12:57:21 +0800330 /* initialize "struct pxa27x_ohci" */
331 ohci = (struct pxa27x_ohci *)hcd_to_ohci(hcd);
332 ohci->dev = &pdev->dev;
333 ohci->clk = usb_clk;
334 ohci->mmio_base = (void __iomem *)hcd->regs;
335
336 if ((retval = pxa27x_start_hc(ohci, &pdev->dev)) < 0) {
Richard Purdie81f280e2005-11-12 14:22:11 +0000337 pr_debug("pxa27x_start_hc failed");
338 goto err3;
339 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
341 /* Select Power Management Mode */
Eric Miao0c392ed2008-10-04 12:57:21 +0800342 pxa27x_ohci_select_pmm(ohci, inf->port_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
Richard Purdie0c27c5d2006-06-08 22:44:07 +0100344 if (inf->power_budget)
345 hcd->power_budget = inf->power_budget;
346
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 ohci_hcd_init(hcd_to_ohci(hcd));
348
Eric Miao84bab732008-10-03 22:37:21 +0800349 retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 if (retval == 0)
351 return retval;
352
Eric Miao0c392ed2008-10-04 12:57:21 +0800353 pxa27x_stop_hc(ohci, &pdev->dev);
Richard Purdie81f280e2005-11-12 14:22:11 +0000354 err3:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 iounmap(hcd->regs);
356 err2:
357 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
358 err1:
359 usb_put_hcd(hcd);
eric miaoa8bcf412007-12-12 08:53:25 +0800360 clk_put(usb_clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 return retval;
362}
363
364
365/* may be called without controller electrically present */
366/* may be called with controller, bus, and devices active */
367
368/**
369 * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
370 * @dev: USB Host Controller being removed
371 * Context: !in_interrupt()
372 *
373 * Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
374 * the HCD's stop() method. It is always called from a thread
375 * context, normally "rmmod", "apmd", or something similar.
376 *
377 */
Richard Purdie81f280e2005-11-12 14:22:11 +0000378void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379{
Eric Miao0c392ed2008-10-04 12:57:21 +0800380 struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
381
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 usb_remove_hcd(hcd);
Eric Miao0c392ed2008-10-04 12:57:21 +0800383 pxa27x_stop_hc(ohci, &pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 iounmap(hcd->regs);
385 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
386 usb_put_hcd(hcd);
Eric Miao0c392ed2008-10-04 12:57:21 +0800387 clk_put(ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388}
389
390/*-------------------------------------------------------------------------*/
391
392static int __devinit
393ohci_pxa27x_start (struct usb_hcd *hcd)
394{
395 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
396 int ret;
397
398 ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
399
David Brownellfdd13b32005-08-31 11:52:57 -0700400 /* The value of NDP in roothub_a is incorrect on this hardware */
401 ohci->num_ports = 3;
402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 if ((ret = ohci_init(ohci)) < 0)
404 return ret;
405
406 if ((ret = ohci_run (ohci)) < 0) {
407 err ("can't start %s", hcd->self.bus_name);
408 ohci_stop (hcd);
409 return ret;
410 }
411
412 return 0;
413}
414
415/*-------------------------------------------------------------------------*/
416
417static const struct hc_driver ohci_pxa27x_hc_driver = {
418 .description = hcd_name,
419 .product_desc = "PXA27x OHCI",
Eric Miao0c392ed2008-10-04 12:57:21 +0800420 .hcd_priv_size = sizeof(struct pxa27x_ohci),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421
422 /*
423 * generic hardware linkage
424 */
425 .irq = ohci_irq,
426 .flags = HCD_USB11 | HCD_MEMORY,
427
428 /*
429 * basic lifecycle operations
430 */
431 .start = ohci_pxa27x_start,
432 .stop = ohci_stop,
David Brownelldd9048a2006-12-05 03:18:31 -0800433 .shutdown = ohci_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434
435 /*
436 * managing i/o requests and associated device resources
437 */
438 .urb_enqueue = ohci_urb_enqueue,
439 .urb_dequeue = ohci_urb_dequeue,
440 .endpoint_disable = ohci_endpoint_disable,
441
442 /*
443 * scheduling support
444 */
445 .get_frame_number = ohci_get_frame,
446
447 /*
448 * root hub support
449 */
450 .hub_status_data = ohci_hub_status_data,
451 .hub_control = ohci_hub_control,
David Brownell8ad7fe12005-09-13 19:59:11 -0700452#ifdef CONFIG_PM
Alan Stern0c0382e2005-10-13 17:08:02 -0400453 .bus_suspend = ohci_bus_suspend,
454 .bus_resume = ohci_bus_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455#endif
David Brownell92936772005-09-22 22:32:11 -0700456 .start_port_reset = ohci_start_port_reset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457};
458
459/*-------------------------------------------------------------------------*/
460
Russell King3ae5eae2005-11-09 22:32:44 +0000461static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 pr_debug ("In ohci_hcd_pxa27x_drv_probe");
464
465 if (usb_disabled())
466 return -ENODEV;
467
Richard Purdie81f280e2005-11-12 14:22:11 +0000468 return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469}
470
Russell King3ae5eae2005-11-09 22:32:44 +0000471static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472{
Russell King3ae5eae2005-11-09 22:32:44 +0000473 struct usb_hcd *hcd = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474
475 usb_hcd_pxa27x_remove(hcd, pdev);
Richard Purdiea5e36d22005-11-28 22:15:46 +0000476 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 return 0;
478}
479
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000480#ifdef CONFIG_PM
481static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482{
Richard Purdiea5e36d22005-11-28 22:15:46 +0000483 struct usb_hcd *hcd = platform_get_drvdata(pdev);
Eric Miao0c392ed2008-10-04 12:57:21 +0800484 struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000485
Eric Miao0c392ed2008-10-04 12:57:21 +0800486 if (time_before(jiffies, ohci->ohci.next_statechange))
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000487 msleep(5);
Eric Miao0c392ed2008-10-04 12:57:21 +0800488 ohci->ohci.next_statechange = jiffies;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000489
Eric Miao0c392ed2008-10-04 12:57:21 +0800490 pxa27x_stop_hc(ohci, &pdev->dev);
Richard Purdiea5e36d22005-11-28 22:15:46 +0000491 hcd->state = HC_STATE_SUSPENDED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
493 return 0;
494}
495
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000496static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497{
Richard Purdiea5e36d22005-11-28 22:15:46 +0000498 struct usb_hcd *hcd = platform_get_drvdata(pdev);
Eric Miao0c392ed2008-10-04 12:57:21 +0800499 struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000500 int status;
501
Eric Miao0c392ed2008-10-04 12:57:21 +0800502 if (time_before(jiffies, ohci->ohci.next_statechange))
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000503 msleep(5);
Eric Miao0c392ed2008-10-04 12:57:21 +0800504 ohci->ohci.next_statechange = jiffies;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000505
Eric Miao0c392ed2008-10-04 12:57:21 +0800506 if ((status = pxa27x_start_hc(ohci, &pdev->dev)) < 0)
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000507 return status;
508
Alan Stern43bbb7e2008-04-03 18:03:17 -0400509 ohci_finish_controller_resume(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 return 0;
511}
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000512#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Kay Sieversf4fce612008-04-10 21:29:22 -0700514/* work with hotplug and coldplug */
515MODULE_ALIAS("platform:pxa27x-ohci");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
Russell King3ae5eae2005-11-09 22:32:44 +0000517static struct platform_driver ohci_hcd_pxa27x_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 .probe = ohci_hcd_pxa27x_drv_probe,
519 .remove = ohci_hcd_pxa27x_drv_remove,
David Brownelldd9048a2006-12-05 03:18:31 -0800520 .shutdown = usb_hcd_platform_shutdown,
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000521#ifdef CONFIG_PM
David Brownelldd9048a2006-12-05 03:18:31 -0800522 .suspend = ohci_hcd_pxa27x_drv_suspend,
Russell King3ae5eae2005-11-09 22:32:44 +0000523 .resume = ohci_hcd_pxa27x_drv_resume,
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000524#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000525 .driver = {
526 .name = "pxa27x-ohci",
Kay Sieversf4fce612008-04-10 21:29:22 -0700527 .owner = THIS_MODULE,
Russell King3ae5eae2005-11-09 22:32:44 +0000528 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529};
530