blob: 3a7c24c03671199680a435cd93370b415bcfa52c [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 2000-2005 David Brownell
6 * (C) Copyright 2002 Hewlett-Packard Company
David Brownellbd350782006-07-31 07:29:39 -07007 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * OMAP Bus Glue
9 *
10 * Modified for OMAP by Tony Lindgren <tony@atomide.com>
11 * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
12 * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
13 *
14 * This file is licenced under the GPL.
15 */
16
Thomas Gleixnerd54b5ca2006-07-01 19:29:44 -070017#include <linux/signal.h> /* IRQF_DISABLED */
Tim Schmielau4e57b682005-10-30 15:03:48 -080018#include <linux/jiffies.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010019#include <linux/platform_device.h>
Russell Kingf8ce2542006-01-07 16:15:52 +000020#include <linux/clk.h>
Tim Schmielau4e57b682005-10-30 15:03:48 -080021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm/hardware.h>
23#include <asm/io.h>
24#include <asm/mach-types.h>
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <asm/arch/mux.h>
27#include <asm/arch/irqs.h>
28#include <asm/arch/gpio.h>
29#include <asm/arch/fpga.h>
30#include <asm/arch/usb.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32
33/* OMAP-1510 OHCI has its own MMU for DMA */
34#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
35#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
36#define OMAP1510_LB_MMU_CTL 0xfffec208
37#define OMAP1510_LB_MMU_LCK 0xfffec224
38#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
39#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
40#define OMAP1510_LB_MMU_CAM_L 0xfffec230
41#define OMAP1510_LB_MMU_RAM_H 0xfffec234
42#define OMAP1510_LB_MMU_RAM_L 0xfffec238
43
44
45#ifndef CONFIG_ARCH_OMAP
46#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
47#endif
48
49#ifdef CONFIG_TPS65010
David Brownell6d16bfb2008-01-27 18:14:49 +010050#include <linux/i2c/tps65010.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#else
52
53#define LOW 0
54#define HIGH 1
55
56#define GPIO1 1
57
58static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
59{
60 return 0;
61}
62
63#endif
64
65extern int usb_disabled(void);
66extern int ocpi_enable(void);
67
68static struct clk *usb_host_ck;
David Brownellbd350782006-07-31 07:29:39 -070069static struct clk *usb_dc_ck;
70static int host_enabled;
71static int host_initialized;
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
73static void omap_ohci_clock_power(int on)
74{
75 if (on) {
David Brownellbd350782006-07-31 07:29:39 -070076 clk_enable(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 clk_enable(usb_host_ck);
78 /* guesstimate for T5 == 1x 32K clock + APLL lock time */
79 udelay(100);
80 } else {
81 clk_disable(usb_host_ck);
David Brownellbd350782006-07-31 07:29:39 -070082 clk_disable(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 }
84}
85
86/*
87 * Board specific gang-switched transceiver power on/off.
88 * NOTE: OSK supplies power from DC, not battery.
89 */
90static int omap_ohci_transceiver_power(int on)
91{
92 if (on) {
93 if (machine_is_omap_innovator() && cpu_is_omap1510())
94 fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
David Brownellbd350782006-07-31 07:29:39 -070095 | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 INNOVATOR_FPGA_CAM_USB_CONTROL);
97 else if (machine_is_omap_osk())
98 tps65010_set_gpio_out_value(GPIO1, LOW);
99 } else {
100 if (machine_is_omap_innovator() && cpu_is_omap1510())
101 fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
David Brownellbd350782006-07-31 07:29:39 -0700102 & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 INNOVATOR_FPGA_CAM_USB_CONTROL);
104 else if (machine_is_omap_osk())
105 tps65010_set_gpio_out_value(GPIO1, HIGH);
106 }
107
108 return 0;
109}
110
David Brownellbd350782006-07-31 07:29:39 -0700111#ifdef CONFIG_ARCH_OMAP15XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112/*
113 * OMAP-1510 specific Local Bus clock on/off
114 */
115static int omap_1510_local_bus_power(int on)
116{
117 if (on) {
118 omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
119 udelay(200);
120 } else {
121 omap_writel(0, OMAP1510_LB_MMU_CTL);
122 }
123
124 return 0;
125}
126
127/*
128 * OMAP-1510 specific Local Bus initialization
129 * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
David Brownellbd350782006-07-31 07:29:39 -0700130 * See also arch/mach-omap/memory.h for __virt_to_dma() and
131 * __dma_to_virt() which need to match with the physical
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 * Local Bus address below.
133 */
134static int omap_1510_local_bus_init(void)
135{
136 unsigned int tlb;
137 unsigned long lbaddr, physaddr;
138
David Brownellbd350782006-07-31 07:29:39 -0700139 omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 OMAP1510_LB_CLOCK_DIV);
141
142 /* Configure the Local Bus MMU table */
143 for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
144 lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
145 physaddr = tlb * 0x00100000 + PHYS_OFFSET;
146 omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
David Brownellbd350782006-07-31 07:29:39 -0700147 omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 OMAP1510_LB_MMU_CAM_L);
149 omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
150 omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
151 omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
152 omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
153 }
154
155 /* Enable the walking table */
156 omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
157 udelay(200);
158
159 return 0;
160}
David Brownellbd350782006-07-31 07:29:39 -0700161#else
162#define omap_1510_local_bus_power(x) {}
163#define omap_1510_local_bus_init() {}
164#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166#ifdef CONFIG_USB_OTG
167
168static void start_hnp(struct ohci_hcd *ohci)
169{
170 const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1;
171 unsigned long flags;
172
173 otg_start_hnp(ohci->transceiver);
174
175 local_irq_save(flags);
176 ohci->transceiver->state = OTG_STATE_A_SUSPEND;
177 writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
178 OTG_CTRL_REG &= ~OTG_A_BUSREQ;
179 local_irq_restore(flags);
180}
181
182#endif
183
184/*-------------------------------------------------------------------------*/
185
David Brownellbd350782006-07-31 07:29:39 -0700186static int ohci_omap_init(struct usb_hcd *hcd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187{
David Brownellbd350782006-07-31 07:29:39 -0700188 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
189 struct omap_usb_config *config = hcd->self.controller->platform_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 int need_transceiver = (config->otg != 0);
191 int ret;
192
David Brownellbd350782006-07-31 07:29:39 -0700193 dev_dbg(hcd->self.controller, "starting USB Controller\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195 if (config->otg) {
196 ohci_to_hcd(ohci)->self.otg_port = config->otg;
197 /* default/minimum OTG power budget: 8 mA */
Alan Sternbc96c0a2005-04-25 11:21:31 -0400198 ohci_to_hcd(ohci)->power_budget = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 }
200
201 /* boards can use OTG transceivers in non-OTG modes */
202 need_transceiver = need_transceiver
203 || machine_is_omap_h2() || machine_is_omap_h3();
204
205 if (cpu_is_omap16xx())
206 ocpi_enable();
207
208#ifdef CONFIG_ARCH_OMAP_OTG
209 if (need_transceiver) {
210 ohci->transceiver = otg_get_transceiver();
211 if (ohci->transceiver) {
212 int status = otg_set_host(ohci->transceiver,
213 &ohci_to_hcd(ohci)->self);
David Brownellbd350782006-07-31 07:29:39 -0700214 dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 ohci->transceiver->label, status);
216 if (status) {
217 if (ohci->transceiver)
218 put_device(ohci->transceiver->dev);
219 return status;
220 }
221 } else {
David Brownellbd350782006-07-31 07:29:39 -0700222 dev_err(hcd->self.controller, "can't find transceiver\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 return -ENODEV;
224 }
225 }
226#endif
227
228 omap_ohci_clock_power(1);
229
230 if (cpu_is_omap1510()) {
231 omap_1510_local_bus_power(1);
232 omap_1510_local_bus_init();
233 }
234
235 if ((ret = ohci_init(ohci)) < 0)
236 return ret;
237
238 /* board-specific power switching and overcurrent support */
239 if (machine_is_omap_osk() || machine_is_omap_innovator()) {
240 u32 rh = roothub_a (ohci);
241
242 /* power switching (ganged by default) */
243 rh &= ~RH_A_NPS;
244
245 /* TPS2045 switch for internal transceiver (port 1) */
246 if (machine_is_omap_osk()) {
Alan Sternbc96c0a2005-04-25 11:21:31 -0400247 ohci_to_hcd(ohci)->power_budget = 250;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
249 rh &= ~RH_A_NOCP;
250
251 /* gpio9 for overcurrent detction */
252 omap_cfg_reg(W8_1610_GPIO9);
253 omap_request_gpio(9);
254 omap_set_gpio_direction(9, 1 /* IN */);
255
256 /* for paranoia's sake: disable USB.PUEN */
257 omap_cfg_reg(W4_USB_HIGHZ);
258 }
259 ohci_writel(ohci, rh, &ohci->regs->roothub.a);
260 distrust_firmware = 0;
David Brownellbd350782006-07-31 07:29:39 -0700261 } else if (machine_is_nokia770()) {
262 /* We require a self-powered hub, which should have
263 * plenty of power. */
264 ohci_to_hcd(ohci)->power_budget = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 }
266
267 /* FIXME khubd hub requests should manage power switching */
268 omap_ohci_transceiver_power(1);
269
270 /* board init will have already handled HMC and mux setup.
271 * any external transceiver should already be initialized
272 * too, so all configured ports use the right signaling now.
273 */
274
275 return 0;
276}
277
David Brownellbd350782006-07-31 07:29:39 -0700278static void ohci_omap_stop(struct usb_hcd *hcd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279{
David Brownellbd350782006-07-31 07:29:39 -0700280 dev_dbg(hcd->self.controller, "stopping USB Controller\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 omap_ohci_clock_power(0);
282}
283
284
285/*-------------------------------------------------------------------------*/
286
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287/**
288 * usb_hcd_omap_probe - initialize OMAP-based HCDs
289 * Context: !in_interrupt()
290 *
291 * Allocates basic resources for this USB host controller, and
292 * then invokes the start() method for the HCD associated with it
293 * through the hotplug entry's driver_data.
294 */
David Brownellbd350782006-07-31 07:29:39 -0700295static int usb_hcd_omap_probe (const struct hc_driver *driver,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 struct platform_device *pdev)
297{
David Vrabel48944732006-01-19 17:56:29 +0000298 int retval, irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 struct usb_hcd *hcd = 0;
300 struct ohci_hcd *ohci;
301
302 if (pdev->num_resources != 2) {
David Brownellbd350782006-07-31 07:29:39 -0700303 printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 pdev->num_resources);
305 return -ENODEV;
306 }
307
David Brownellbd350782006-07-31 07:29:39 -0700308 if (pdev->resource[0].flags != IORESOURCE_MEM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 || pdev->resource[1].flags != IORESOURCE_IRQ) {
310 printk(KERN_ERR "hcd probe: invalid resource type\n");
311 return -ENODEV;
312 }
313
314 usb_host_ck = clk_get(0, "usb_hhc_ck");
315 if (IS_ERR(usb_host_ck))
316 return PTR_ERR(usb_host_ck);
317
David Brownellbd350782006-07-31 07:29:39 -0700318 if (!cpu_is_omap1510())
319 usb_dc_ck = clk_get(0, "usb_dc_ck");
320 else
321 usb_dc_ck = clk_get(0, "lb_ck");
322
323 if (IS_ERR(usb_dc_ck)) {
324 clk_put(usb_host_ck);
325 return PTR_ERR(usb_dc_ck);
326 }
327
328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
330 if (!hcd) {
331 retval = -ENOMEM;
332 goto err0;
333 }
334 hcd->rsrc_start = pdev->resource[0].start;
335 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
336
337 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
338 dev_dbg(&pdev->dev, "request_mem_region failed\n");
339 retval = -EBUSY;
340 goto err1;
341 }
342
343 hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);
344
345 ohci = hcd_to_ohci(hcd);
346 ohci_hcd_init(ohci);
347
David Brownellbd350782006-07-31 07:29:39 -0700348 host_initialized = 0;
349 host_enabled = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
David Vrabel48944732006-01-19 17:56:29 +0000351 irq = platform_get_irq(pdev, 0);
352 if (irq < 0) {
353 retval = -ENXIO;
354 goto err2;
355 }
Thomas Gleixnerd54b5ca2006-07-01 19:29:44 -0700356 retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
David Brownellbd350782006-07-31 07:29:39 -0700357 if (retval)
358 goto err2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
David Brownellbd350782006-07-31 07:29:39 -0700360 host_initialized = 1;
361
362 if (!host_enabled)
363 omap_ohci_clock_power(0);
364
365 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366err2:
367 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
368err1:
369 usb_put_hcd(hcd);
370err0:
David Brownellbd350782006-07-31 07:29:39 -0700371 clk_put(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 clk_put(usb_host_ck);
373 return retval;
374}
375
376
377/* may be called with controller, bus, and devices active */
378
379/**
380 * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
381 * @dev: USB Host Controller being removed
382 * Context: !in_interrupt()
383 *
384 * Reverses the effect of usb_hcd_omap_probe(), first invoking
385 * the HCD's stop() method. It is always called from a thread
386 * context, normally "rmmod", "apmd", or something similar.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 */
David Brownellbd350782006-07-31 07:29:39 -0700388static inline void
389usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390{
David Brownellbd350782006-07-31 07:29:39 -0700391 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 usb_remove_hcd(hcd);
David Brownellbd350782006-07-31 07:29:39 -0700394 if (ohci->transceiver) {
395 (void) otg_set_host(ohci->transceiver, 0);
396 put_device(ohci->transceiver->dev);
397 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 if (machine_is_omap_osk())
399 omap_free_gpio(9);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
401 usb_put_hcd(hcd);
David Brownellbd350782006-07-31 07:29:39 -0700402 clk_put(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 clk_put(usb_host_ck);
404}
405
406/*-------------------------------------------------------------------------*/
407
David Brownellbd350782006-07-31 07:29:39 -0700408static int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409ohci_omap_start (struct usb_hcd *hcd)
410{
411 struct omap_usb_config *config;
412 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
413 int ret;
414
David Brownellbd350782006-07-31 07:29:39 -0700415 if (!host_enabled)
416 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 config = hcd->self.controller->platform_data;
David Brownelld4139842006-08-04 11:31:55 -0700418 if (config->otg || config->rwc) {
419 ohci->hc_control = OHCI_CTRL_RWC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 writel(OHCI_CTRL_RWC, &ohci->regs->control);
David Brownelld4139842006-08-04 11:31:55 -0700421 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 if ((ret = ohci_run (ohci)) < 0) {
424 dev_err(hcd->self.controller, "can't start\n");
425 ohci_stop (hcd);
426 return ret;
427 }
428 return 0;
429}
430
431/*-------------------------------------------------------------------------*/
432
433static const struct hc_driver ohci_omap_hc_driver = {
434 .description = hcd_name,
435 .product_desc = "OMAP OHCI",
436 .hcd_priv_size = sizeof(struct ohci_hcd),
437
438 /*
439 * generic hardware linkage
440 */
441 .irq = ohci_irq,
442 .flags = HCD_USB11 | HCD_MEMORY,
443
444 /*
445 * basic lifecycle operations
446 */
David Brownellbd350782006-07-31 07:29:39 -0700447 .reset = ohci_omap_init,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 .start = ohci_omap_start,
David Brownellbd350782006-07-31 07:29:39 -0700449 .stop = ohci_omap_stop,
David Brownelldd9048a2006-12-05 03:18:31 -0800450 .shutdown = ohci_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
452 /*
453 * managing i/o requests and associated device resources
454 */
455 .urb_enqueue = ohci_urb_enqueue,
456 .urb_dequeue = ohci_urb_dequeue,
457 .endpoint_disable = ohci_endpoint_disable,
458
459 /*
460 * scheduling support
461 */
462 .get_frame_number = ohci_get_frame,
463
464 /*
465 * root hub support
466 */
467 .hub_status_data = ohci_hub_status_data,
468 .hub_control = ohci_hub_control,
David Brownelld4139842006-08-04 11:31:55 -0700469 .hub_irq_enable = ohci_rhsc_enable,
David Brownell8ad7fe12005-09-13 19:59:11 -0700470#ifdef CONFIG_PM
Alan Stern0c0382e2005-10-13 17:08:02 -0400471 .bus_suspend = ohci_bus_suspend,
472 .bus_resume = ohci_bus_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473#endif
474 .start_port_reset = ohci_start_port_reset,
475};
476
477/*-------------------------------------------------------------------------*/
478
Russell King3ae5eae2005-11-09 22:32:44 +0000479static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480{
Russell King3ae5eae2005-11-09 22:32:44 +0000481 return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482}
483
Russell King3ae5eae2005-11-09 22:32:44 +0000484static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485{
Russell King3ae5eae2005-11-09 22:32:44 +0000486 struct usb_hcd *hcd = platform_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
Russell King3ae5eae2005-11-09 22:32:44 +0000488 usb_hcd_omap_remove(hcd, dev);
Russell King3ae5eae2005-11-09 22:32:44 +0000489 platform_set_drvdata(dev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
491 return 0;
492}
493
494/*-------------------------------------------------------------------------*/
495
496#ifdef CONFIG_PM
497
Russell King3ae5eae2005-11-09 22:32:44 +0000498static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499{
Russell King3ae5eae2005-11-09 22:32:44 +0000500 struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
David Brownellf197b2c2005-09-22 22:42:53 -0700502 if (time_before(jiffies, ohci->next_statechange))
503 msleep(5);
504 ohci->next_statechange = jiffies;
505
506 omap_ohci_clock_power(0);
507 ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
David Brownellf197b2c2005-09-22 22:42:53 -0700508 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509}
510
Russell King3ae5eae2005-11-09 22:32:44 +0000511static int ohci_omap_resume(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
Alan Stern43bbb7e2008-04-03 18:03:17 -0400513 struct usb_hcd *hcd = platform_get_drvdata(dev);
514 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
david-b@pacbell.netb404a5b2005-06-29 06:59:14 -0700516 if (time_before(jiffies, ohci->next_statechange))
517 msleep(5);
518 ohci->next_statechange = jiffies;
David Brownellf197b2c2005-09-22 22:42:53 -0700519
david-b@pacbell.netb404a5b2005-06-29 06:59:14 -0700520 omap_ohci_clock_power(1);
Alan Stern43bbb7e2008-04-03 18:03:17 -0400521 ohci_finish_controller_resume(hcd);
David Brownellf197b2c2005-09-22 22:42:53 -0700522 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523}
524
525#endif
526
527/*-------------------------------------------------------------------------*/
528
529/*
530 * Driver definition to register with the OMAP bus
531 */
Russell King3ae5eae2005-11-09 22:32:44 +0000532static struct platform_driver ohci_hcd_omap_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 .probe = ohci_hcd_omap_drv_probe,
534 .remove = ohci_hcd_omap_drv_remove,
David Brownelldd9048a2006-12-05 03:18:31 -0800535 .shutdown = usb_hcd_platform_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536#ifdef CONFIG_PM
537 .suspend = ohci_omap_suspend,
538 .resume = ohci_omap_resume,
539#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000540 .driver = {
541 .owner = THIS_MODULE,
542 .name = "ohci",
543 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544};
545
Kay Sieversf4fce612008-04-10 21:29:22 -0700546MODULE_ALIAS("platform:ohci");