blob: 2b7c04079d561939a14fb58fa04d622bfaf66631 [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;
Tony Lindgrenf35ae632008-07-03 12:24:43 +0300172 u32 l;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
174 otg_start_hnp(ohci->transceiver);
175
176 local_irq_save(flags);
177 ohci->transceiver->state = OTG_STATE_A_SUSPEND;
178 writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
Tony Lindgrenf35ae632008-07-03 12:24:43 +0300179 l = omap_readl(OTG_CTRL);
180 l &= ~OTG_A_BUSREQ;
181 omap_writel(l, OTG_CTRL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 local_irq_restore(flags);
183}
184
185#endif
186
187/*-------------------------------------------------------------------------*/
188
David Brownellbd350782006-07-31 07:29:39 -0700189static int ohci_omap_init(struct usb_hcd *hcd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190{
David Brownellbd350782006-07-31 07:29:39 -0700191 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
192 struct omap_usb_config *config = hcd->self.controller->platform_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 int need_transceiver = (config->otg != 0);
194 int ret;
195
David Brownellbd350782006-07-31 07:29:39 -0700196 dev_dbg(hcd->self.controller, "starting USB Controller\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198 if (config->otg) {
199 ohci_to_hcd(ohci)->self.otg_port = config->otg;
200 /* default/minimum OTG power budget: 8 mA */
Alan Sternbc96c0a2005-04-25 11:21:31 -0400201 ohci_to_hcd(ohci)->power_budget = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 }
203
204 /* boards can use OTG transceivers in non-OTG modes */
205 need_transceiver = need_transceiver
206 || machine_is_omap_h2() || machine_is_omap_h3();
207
208 if (cpu_is_omap16xx())
209 ocpi_enable();
210
211#ifdef CONFIG_ARCH_OMAP_OTG
212 if (need_transceiver) {
213 ohci->transceiver = otg_get_transceiver();
214 if (ohci->transceiver) {
215 int status = otg_set_host(ohci->transceiver,
216 &ohci_to_hcd(ohci)->self);
David Brownellbd350782006-07-31 07:29:39 -0700217 dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 ohci->transceiver->label, status);
219 if (status) {
220 if (ohci->transceiver)
221 put_device(ohci->transceiver->dev);
222 return status;
223 }
224 } else {
David Brownellbd350782006-07-31 07:29:39 -0700225 dev_err(hcd->self.controller, "can't find transceiver\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 return -ENODEV;
227 }
228 }
229#endif
230
231 omap_ohci_clock_power(1);
232
233 if (cpu_is_omap1510()) {
234 omap_1510_local_bus_power(1);
235 omap_1510_local_bus_init();
236 }
237
238 if ((ret = ohci_init(ohci)) < 0)
239 return ret;
240
241 /* board-specific power switching and overcurrent support */
242 if (machine_is_omap_osk() || machine_is_omap_innovator()) {
243 u32 rh = roothub_a (ohci);
244
245 /* power switching (ganged by default) */
246 rh &= ~RH_A_NPS;
247
248 /* TPS2045 switch for internal transceiver (port 1) */
249 if (machine_is_omap_osk()) {
Alan Sternbc96c0a2005-04-25 11:21:31 -0400250 ohci_to_hcd(ohci)->power_budget = 250;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
252 rh &= ~RH_A_NOCP;
253
254 /* gpio9 for overcurrent detction */
255 omap_cfg_reg(W8_1610_GPIO9);
256 omap_request_gpio(9);
257 omap_set_gpio_direction(9, 1 /* IN */);
258
259 /* for paranoia's sake: disable USB.PUEN */
260 omap_cfg_reg(W4_USB_HIGHZ);
261 }
262 ohci_writel(ohci, rh, &ohci->regs->roothub.a);
263 distrust_firmware = 0;
David Brownellbd350782006-07-31 07:29:39 -0700264 } else if (machine_is_nokia770()) {
265 /* We require a self-powered hub, which should have
266 * plenty of power. */
267 ohci_to_hcd(ohci)->power_budget = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 }
269
270 /* FIXME khubd hub requests should manage power switching */
271 omap_ohci_transceiver_power(1);
272
273 /* board init will have already handled HMC and mux setup.
274 * any external transceiver should already be initialized
275 * too, so all configured ports use the right signaling now.
276 */
277
278 return 0;
279}
280
David Brownellbd350782006-07-31 07:29:39 -0700281static void ohci_omap_stop(struct usb_hcd *hcd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282{
David Brownellbd350782006-07-31 07:29:39 -0700283 dev_dbg(hcd->self.controller, "stopping USB Controller\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 omap_ohci_clock_power(0);
285}
286
287
288/*-------------------------------------------------------------------------*/
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290/**
291 * usb_hcd_omap_probe - initialize OMAP-based HCDs
292 * Context: !in_interrupt()
293 *
294 * Allocates basic resources for this USB host controller, and
295 * then invokes the start() method for the HCD associated with it
296 * through the hotplug entry's driver_data.
297 */
David Brownellbd350782006-07-31 07:29:39 -0700298static int usb_hcd_omap_probe (const struct hc_driver *driver,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 struct platform_device *pdev)
300{
David Vrabel48944732006-01-19 17:56:29 +0000301 int retval, irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 struct usb_hcd *hcd = 0;
303 struct ohci_hcd *ohci;
304
305 if (pdev->num_resources != 2) {
David Brownellbd350782006-07-31 07:29:39 -0700306 printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 pdev->num_resources);
308 return -ENODEV;
309 }
310
David Brownellbd350782006-07-31 07:29:39 -0700311 if (pdev->resource[0].flags != IORESOURCE_MEM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 || pdev->resource[1].flags != IORESOURCE_IRQ) {
313 printk(KERN_ERR "hcd probe: invalid resource type\n");
314 return -ENODEV;
315 }
316
317 usb_host_ck = clk_get(0, "usb_hhc_ck");
318 if (IS_ERR(usb_host_ck))
319 return PTR_ERR(usb_host_ck);
320
David Brownellbd350782006-07-31 07:29:39 -0700321 if (!cpu_is_omap1510())
322 usb_dc_ck = clk_get(0, "usb_dc_ck");
323 else
324 usb_dc_ck = clk_get(0, "lb_ck");
325
326 if (IS_ERR(usb_dc_ck)) {
327 clk_put(usb_host_ck);
328 return PTR_ERR(usb_dc_ck);
329 }
330
331
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
333 if (!hcd) {
334 retval = -ENOMEM;
335 goto err0;
336 }
337 hcd->rsrc_start = pdev->resource[0].start;
338 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
339
340 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
341 dev_dbg(&pdev->dev, "request_mem_region failed\n");
342 retval = -EBUSY;
343 goto err1;
344 }
345
346 hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);
347
348 ohci = hcd_to_ohci(hcd);
349 ohci_hcd_init(ohci);
350
David Brownellbd350782006-07-31 07:29:39 -0700351 host_initialized = 0;
352 host_enabled = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
David Vrabel48944732006-01-19 17:56:29 +0000354 irq = platform_get_irq(pdev, 0);
355 if (irq < 0) {
356 retval = -ENXIO;
357 goto err2;
358 }
Thomas Gleixnerd54b5ca2006-07-01 19:29:44 -0700359 retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
David Brownellbd350782006-07-31 07:29:39 -0700360 if (retval)
361 goto err2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
David Brownellbd350782006-07-31 07:29:39 -0700363 host_initialized = 1;
364
365 if (!host_enabled)
366 omap_ohci_clock_power(0);
367
368 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369err2:
370 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
371err1:
372 usb_put_hcd(hcd);
373err0:
David Brownellbd350782006-07-31 07:29:39 -0700374 clk_put(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 clk_put(usb_host_ck);
376 return retval;
377}
378
379
380/* may be called with controller, bus, and devices active */
381
382/**
383 * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
384 * @dev: USB Host Controller being removed
385 * Context: !in_interrupt()
386 *
387 * Reverses the effect of usb_hcd_omap_probe(), first invoking
388 * the HCD's stop() method. It is always called from a thread
389 * context, normally "rmmod", "apmd", or something similar.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 */
David Brownellbd350782006-07-31 07:29:39 -0700391static inline void
392usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393{
David Brownellbd350782006-07-31 07:29:39 -0700394 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
395
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 usb_remove_hcd(hcd);
David Brownellbd350782006-07-31 07:29:39 -0700397 if (ohci->transceiver) {
398 (void) otg_set_host(ohci->transceiver, 0);
399 put_device(ohci->transceiver->dev);
400 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 if (machine_is_omap_osk())
402 omap_free_gpio(9);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
404 usb_put_hcd(hcd);
David Brownellbd350782006-07-31 07:29:39 -0700405 clk_put(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 clk_put(usb_host_ck);
407}
408
409/*-------------------------------------------------------------------------*/
410
David Brownellbd350782006-07-31 07:29:39 -0700411static int
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412ohci_omap_start (struct usb_hcd *hcd)
413{
414 struct omap_usb_config *config;
415 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
416 int ret;
417
David Brownellbd350782006-07-31 07:29:39 -0700418 if (!host_enabled)
419 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 config = hcd->self.controller->platform_data;
David Brownelld4139842006-08-04 11:31:55 -0700421 if (config->otg || config->rwc) {
422 ohci->hc_control = OHCI_CTRL_RWC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 writel(OHCI_CTRL_RWC, &ohci->regs->control);
David Brownelld4139842006-08-04 11:31:55 -0700424 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
426 if ((ret = ohci_run (ohci)) < 0) {
427 dev_err(hcd->self.controller, "can't start\n");
428 ohci_stop (hcd);
429 return ret;
430 }
431 return 0;
432}
433
434/*-------------------------------------------------------------------------*/
435
436static const struct hc_driver ohci_omap_hc_driver = {
437 .description = hcd_name,
438 .product_desc = "OMAP OHCI",
439 .hcd_priv_size = sizeof(struct ohci_hcd),
440
441 /*
442 * generic hardware linkage
443 */
444 .irq = ohci_irq,
445 .flags = HCD_USB11 | HCD_MEMORY,
446
447 /*
448 * basic lifecycle operations
449 */
David Brownellbd350782006-07-31 07:29:39 -0700450 .reset = ohci_omap_init,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 .start = ohci_omap_start,
David Brownellbd350782006-07-31 07:29:39 -0700452 .stop = ohci_omap_stop,
David Brownelldd9048a2006-12-05 03:18:31 -0800453 .shutdown = ohci_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454
455 /*
456 * managing i/o requests and associated device resources
457 */
458 .urb_enqueue = ohci_urb_enqueue,
459 .urb_dequeue = ohci_urb_dequeue,
460 .endpoint_disable = ohci_endpoint_disable,
461
462 /*
463 * scheduling support
464 */
465 .get_frame_number = ohci_get_frame,
466
467 /*
468 * root hub support
469 */
470 .hub_status_data = ohci_hub_status_data,
471 .hub_control = ohci_hub_control,
David Brownell8ad7fe12005-09-13 19:59:11 -0700472#ifdef CONFIG_PM
Alan Stern0c0382e2005-10-13 17:08:02 -0400473 .bus_suspend = ohci_bus_suspend,
474 .bus_resume = ohci_bus_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475#endif
476 .start_port_reset = ohci_start_port_reset,
477};
478
479/*-------------------------------------------------------------------------*/
480
Russell King3ae5eae2005-11-09 22:32:44 +0000481static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482{
Russell King3ae5eae2005-11-09 22:32:44 +0000483 return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484}
485
Russell King3ae5eae2005-11-09 22:32:44 +0000486static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487{
Russell King3ae5eae2005-11-09 22:32:44 +0000488 struct usb_hcd *hcd = platform_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Russell King3ae5eae2005-11-09 22:32:44 +0000490 usb_hcd_omap_remove(hcd, dev);
Russell King3ae5eae2005-11-09 22:32:44 +0000491 platform_set_drvdata(dev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
493 return 0;
494}
495
496/*-------------------------------------------------------------------------*/
497
498#ifdef CONFIG_PM
499
Russell King3ae5eae2005-11-09 22:32:44 +0000500static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
Russell King3ae5eae2005-11-09 22:32:44 +0000502 struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
David Brownellf197b2c2005-09-22 22:42:53 -0700504 if (time_before(jiffies, ohci->next_statechange))
505 msleep(5);
506 ohci->next_statechange = jiffies;
507
508 omap_ohci_clock_power(0);
509 ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
David Brownellf197b2c2005-09-22 22:42:53 -0700510 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511}
512
Russell King3ae5eae2005-11-09 22:32:44 +0000513static int ohci_omap_resume(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514{
Alan Stern43bbb7e2008-04-03 18:03:17 -0400515 struct usb_hcd *hcd = platform_get_drvdata(dev);
516 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
david-b@pacbell.netb404a5b2005-06-29 06:59:14 -0700518 if (time_before(jiffies, ohci->next_statechange))
519 msleep(5);
520 ohci->next_statechange = jiffies;
David Brownellf197b2c2005-09-22 22:42:53 -0700521
david-b@pacbell.netb404a5b2005-06-29 06:59:14 -0700522 omap_ohci_clock_power(1);
Alan Stern43bbb7e2008-04-03 18:03:17 -0400523 ohci_finish_controller_resume(hcd);
David Brownellf197b2c2005-09-22 22:42:53 -0700524 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525}
526
527#endif
528
529/*-------------------------------------------------------------------------*/
530
531/*
532 * Driver definition to register with the OMAP bus
533 */
Russell King3ae5eae2005-11-09 22:32:44 +0000534static struct platform_driver ohci_hcd_omap_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 .probe = ohci_hcd_omap_drv_probe,
536 .remove = ohci_hcd_omap_drv_remove,
David Brownelldd9048a2006-12-05 03:18:31 -0800537 .shutdown = usb_hcd_platform_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538#ifdef CONFIG_PM
539 .suspend = ohci_omap_suspend,
540 .resume = ohci_omap_resume,
541#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000542 .driver = {
543 .owner = THIS_MODULE,
544 .name = "ohci",
545 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546};
547
Kay Sieversf4fce612008-04-10 21:29:22 -0700548MODULE_ALIAS("platform:ohci");