blob: a44a4fede1c4c51eb963f52ae8f72c9a291493b2 [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
Russell Kingf8ce2542006-01-07 16:15:52 +000017#include <linux/clk.h>
Manjunath Goudarde57a152013-09-21 16:38:39 +053018#include <linux/dma-mapping.h>
Kishon Vijay Abraham Ided017e2012-06-26 17:40:32 +053019#include <linux/err.h>
Jarkko Nikula944e1bf2008-12-10 17:35:31 -080020#include <linux/gpio.h>
Manjunath Goudarde57a152013-09-21 16:38:39 +053021#include <linux/io.h>
22#include <linux/jiffies.h>
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/usb/otg.h>
26#include <linux/platform_device.h>
27#include <linux/signal.h>
28#include <linux/usb.h>
29#include <linux/usb/hcd.h>
30
31#include "ohci.h"
Tim Schmielau4e57b682005-10-30 15:03:48 -080032
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include <asm/io.h>
34#include <asm/mach-types.h>
35
Tony Lindgren70c494c2012-09-19 10:46:56 -070036#include <mach/mux.h>
Tony Lindgrenb924b202012-06-04 00:56:15 -070037
38#include <mach/hardware.h>
39#include <mach/irqs.h>
40#include <mach/usb.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42
43/* OMAP-1510 OHCI has its own MMU for DMA */
44#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
45#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
46#define OMAP1510_LB_MMU_CTL 0xfffec208
47#define OMAP1510_LB_MMU_LCK 0xfffec224
48#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
49#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
50#define OMAP1510_LB_MMU_CAM_L 0xfffec230
51#define OMAP1510_LB_MMU_RAM_H 0xfffec234
52#define OMAP1510_LB_MMU_RAM_L 0xfffec238
53
Manjunath Goudarde57a152013-09-21 16:38:39 +053054#define DRIVER_DESC "OHCI OMAP driver"
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56#ifdef CONFIG_TPS65010
David Brownell6d16bfb2008-01-27 18:14:49 +010057#include <linux/i2c/tps65010.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#else
59
60#define LOW 0
61#define HIGH 1
62
63#define GPIO1 1
64
65static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
66{
67 return 0;
68}
69
70#endif
71
72extern int usb_disabled(void);
73extern int ocpi_enable(void);
74
75static struct clk *usb_host_ck;
David Brownellbd350782006-07-31 07:29:39 -070076static struct clk *usb_dc_ck;
Manjunath Goudarde57a152013-09-21 16:38:39 +053077
78static const char hcd_name[] = "ohci-omap";
79static struct hc_driver __read_mostly ohci_omap_hc_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
81static void omap_ohci_clock_power(int on)
82{
83 if (on) {
David Brownellbd350782006-07-31 07:29:39 -070084 clk_enable(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 clk_enable(usb_host_ck);
86 /* guesstimate for T5 == 1x 32K clock + APLL lock time */
87 udelay(100);
88 } else {
89 clk_disable(usb_host_ck);
David Brownellbd350782006-07-31 07:29:39 -070090 clk_disable(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 }
92}
93
94/*
95 * Board specific gang-switched transceiver power on/off.
96 * NOTE: OSK supplies power from DC, not battery.
97 */
98static int omap_ohci_transceiver_power(int on)
99{
100 if (on) {
101 if (machine_is_omap_innovator() && cpu_is_omap1510())
Tony Lindgren4c98dc62012-10-02 12:39:09 -0700102 __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
David Brownellbd350782006-07-31 07:29:39 -0700103 | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 INNOVATOR_FPGA_CAM_USB_CONTROL);
105 else if (machine_is_omap_osk())
106 tps65010_set_gpio_out_value(GPIO1, LOW);
107 } else {
108 if (machine_is_omap_innovator() && cpu_is_omap1510())
Tony Lindgren4c98dc62012-10-02 12:39:09 -0700109 __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
David Brownellbd350782006-07-31 07:29:39 -0700110 & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 INNOVATOR_FPGA_CAM_USB_CONTROL);
112 else if (machine_is_omap_osk())
113 tps65010_set_gpio_out_value(GPIO1, HIGH);
114 }
115
116 return 0;
117}
118
David Brownellbd350782006-07-31 07:29:39 -0700119#ifdef CONFIG_ARCH_OMAP15XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120/*
121 * OMAP-1510 specific Local Bus clock on/off
122 */
123static int omap_1510_local_bus_power(int on)
124{
125 if (on) {
126 omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
127 udelay(200);
128 } else {
129 omap_writel(0, OMAP1510_LB_MMU_CTL);
130 }
131
132 return 0;
133}
134
135/*
136 * OMAP-1510 specific Local Bus initialization
137 * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
David Brownellbd350782006-07-31 07:29:39 -0700138 * See also arch/mach-omap/memory.h for __virt_to_dma() and
139 * __dma_to_virt() which need to match with the physical
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 * Local Bus address below.
141 */
142static int omap_1510_local_bus_init(void)
143{
144 unsigned int tlb;
145 unsigned long lbaddr, physaddr;
146
David Brownellbd350782006-07-31 07:29:39 -0700147 omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 OMAP1510_LB_CLOCK_DIV);
149
150 /* Configure the Local Bus MMU table */
151 for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
152 lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
153 physaddr = tlb * 0x00100000 + PHYS_OFFSET;
154 omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
David Brownellbd350782006-07-31 07:29:39 -0700155 omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 OMAP1510_LB_MMU_CAM_L);
157 omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
158 omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
159 omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
160 omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
161 }
162
163 /* Enable the walking table */
164 omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
165 udelay(200);
166
167 return 0;
168}
David Brownellbd350782006-07-31 07:29:39 -0700169#else
170#define omap_1510_local_bus_power(x) {}
171#define omap_1510_local_bus_init() {}
172#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
174#ifdef CONFIG_USB_OTG
175
176static void start_hnp(struct ohci_hcd *ohci)
177{
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800178 struct usb_hcd *hcd = ohci_to_hcd(ohci);
179 const unsigned port = hcd->self.otg_port - 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 unsigned long flags;
Tony Lindgrenf35ae632008-07-03 12:24:43 +0300181 u32 l;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800183 otg_start_hnp(hcd->phy->otg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
185 local_irq_save(flags);
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800186 hcd->phy->state = OTG_STATE_A_SUSPEND;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
Tony Lindgrenf35ae632008-07-03 12:24:43 +0300188 l = omap_readl(OTG_CTRL);
189 l &= ~OTG_A_BUSREQ;
190 omap_writel(l, OTG_CTRL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 local_irq_restore(flags);
192}
193
194#endif
195
196/*-------------------------------------------------------------------------*/
197
Manjunath Goudarde57a152013-09-21 16:38:39 +0530198static int ohci_omap_reset(struct usb_hcd *hcd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199{
David Brownellbd350782006-07-31 07:29:39 -0700200 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
Jingoo Hand4f09e22013-07-30 19:59:40 +0900201 struct omap_usb_config *config = dev_get_platdata(hcd->self.controller);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 int need_transceiver = (config->otg != 0);
203 int ret;
204
David Brownellbd350782006-07-31 07:29:39 -0700205 dev_dbg(hcd->self.controller, "starting USB Controller\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
207 if (config->otg) {
Manjunath Goudarde57a152013-09-21 16:38:39 +0530208 hcd->self.otg_port = config->otg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 /* default/minimum OTG power budget: 8 mA */
Manjunath Goudarde57a152013-09-21 16:38:39 +0530210 hcd->power_budget = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 }
212
213 /* boards can use OTG transceivers in non-OTG modes */
214 need_transceiver = need_transceiver
215 || machine_is_omap_h2() || machine_is_omap_h3();
216
Paul Walmsleyd3645d32012-04-13 06:34:27 -0600217 /* XXX OMAP16xx only */
218 if (config->ocpi_enable)
219 config->ocpi_enable();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
Russell Kingc3df1a22008-09-03 23:59:23 +0100221#ifdef CONFIG_USB_OTG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 if (need_transceiver) {
Greg Kroah-Hartmanff9cce82012-07-05 15:35:41 -0700223 hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
224 if (!IS_ERR_OR_NULL(hcd->phy)) {
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800225 int status = otg_set_host(hcd->phy->otg,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 &ohci_to_hcd(ohci)->self);
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800227 dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
228 hcd->phy->label, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 if (status) {
Greg Kroah-Hartmanff9cce82012-07-05 15:35:41 -0700230 usb_put_phy(hcd->phy);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 return status;
232 }
233 } else {
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800234 dev_err(hcd->self.controller, "can't find phy\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 return -ENODEV;
236 }
Dmitry Baryshkove8b24452008-07-06 14:26:30 +0400237 ohci->start_hnp = start_hnp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 }
239#endif
240
241 omap_ohci_clock_power(1);
242
Tony Lindgren9b466c32008-09-04 16:29:55 -0700243 if (cpu_is_omap15xx()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 omap_1510_local_bus_power(1);
245 omap_1510_local_bus_init();
246 }
247
Manjunath Goudarde57a152013-09-21 16:38:39 +0530248 ret = ohci_setup(hcd);
249 if (ret < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 return ret;
251
Manjunath Goudarde57a152013-09-21 16:38:39 +0530252 if (config->otg || config->rwc) {
253 ohci->hc_control = OHCI_CTRL_RWC;
254 writel(OHCI_CTRL_RWC, &ohci->regs->control);
255 }
256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 /* board-specific power switching and overcurrent support */
258 if (machine_is_omap_osk() || machine_is_omap_innovator()) {
259 u32 rh = roothub_a (ohci);
260
261 /* power switching (ganged by default) */
262 rh &= ~RH_A_NPS;
263
264 /* TPS2045 switch for internal transceiver (port 1) */
265 if (machine_is_omap_osk()) {
Alan Sternbc96c0a2005-04-25 11:21:31 -0400266 ohci_to_hcd(ohci)->power_budget = 250;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
268 rh &= ~RH_A_NOCP;
269
270 /* gpio9 for overcurrent detction */
271 omap_cfg_reg(W8_1610_GPIO9);
Jarkko Nikula944e1bf2008-12-10 17:35:31 -0800272 gpio_request(9, "OHCI overcurrent");
David Brownell40e39252008-12-10 17:35:26 -0800273 gpio_direction_input(9);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
275 /* for paranoia's sake: disable USB.PUEN */
276 omap_cfg_reg(W4_USB_HIGHZ);
277 }
278 ohci_writel(ohci, rh, &ohci->regs->roothub.a);
Dmitry Baryshkov1133cd82008-07-06 23:35:01 +0400279 ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
David Brownellbd350782006-07-31 07:29:39 -0700280 } else if (machine_is_nokia770()) {
281 /* We require a self-powered hub, which should have
282 * plenty of power. */
283 ohci_to_hcd(ohci)->power_budget = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 }
285
286 /* FIXME khubd hub requests should manage power switching */
287 omap_ohci_transceiver_power(1);
288
289 /* board init will have already handled HMC and mux setup.
290 * any external transceiver should already be initialized
291 * too, so all configured ports use the right signaling now.
292 */
293
294 return 0;
295}
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297/*-------------------------------------------------------------------------*/
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299/**
300 * usb_hcd_omap_probe - initialize OMAP-based HCDs
301 * Context: !in_interrupt()
302 *
303 * Allocates basic resources for this USB host controller, and
304 * then invokes the start() method for the HCD associated with it
305 * through the hotplug entry's driver_data.
306 */
David Brownellbd350782006-07-31 07:29:39 -0700307static int usb_hcd_omap_probe (const struct hc_driver *driver,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 struct platform_device *pdev)
309{
David Vrabel48944732006-01-19 17:56:29 +0000310 int retval, irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 struct usb_hcd *hcd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
313 if (pdev->num_resources != 2) {
David Brownellbd350782006-07-31 07:29:39 -0700314 printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 pdev->num_resources);
316 return -ENODEV;
317 }
318
David Brownellbd350782006-07-31 07:29:39 -0700319 if (pdev->resource[0].flags != IORESOURCE_MEM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 || pdev->resource[1].flags != IORESOURCE_IRQ) {
321 printk(KERN_ERR "hcd probe: invalid resource type\n");
322 return -ENODEV;
323 }
324
Russell King953a7e82009-01-18 12:52:38 +0000325 usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 if (IS_ERR(usb_host_ck))
327 return PTR_ERR(usb_host_ck);
328
Tony Lindgren9b466c32008-09-04 16:29:55 -0700329 if (!cpu_is_omap15xx())
Russell King953a7e82009-01-18 12:52:38 +0000330 usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
David Brownellbd350782006-07-31 07:29:39 -0700331 else
Russell King953a7e82009-01-18 12:52:38 +0000332 usb_dc_ck = clk_get(&pdev->dev, "lb_ck");
David Brownellbd350782006-07-31 07:29:39 -0700333
334 if (IS_ERR(usb_dc_ck)) {
335 clk_put(usb_host_ck);
336 return PTR_ERR(usb_dc_ck);
337 }
338
339
Kay Sievers7071a3c2008-05-02 06:02:41 +0200340 hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 if (!hcd) {
342 retval = -ENOMEM;
343 goto err0;
344 }
345 hcd->rsrc_start = pdev->resource[0].start;
346 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
347
348 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
349 dev_dbg(&pdev->dev, "request_mem_region failed\n");
350 retval = -EBUSY;
351 goto err1;
352 }
353
Russell King55c381e2008-09-04 14:07:22 +0100354 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
355 if (!hcd->regs) {
356 dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
357 retval = -ENOMEM;
358 goto err2;
359 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
David Vrabel48944732006-01-19 17:56:29 +0000361 irq = platform_get_irq(pdev, 0);
362 if (irq < 0) {
363 retval = -ENXIO;
Russell King55c381e2008-09-04 14:07:22 +0100364 goto err3;
David Vrabel48944732006-01-19 17:56:29 +0000365 }
Yong Zhangb5dd18d2011-09-07 16:10:52 +0800366 retval = usb_add_hcd(hcd, irq, 0);
David Brownellbd350782006-07-31 07:29:39 -0700367 if (retval)
Russell King55c381e2008-09-04 14:07:22 +0100368 goto err3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Peter Chen3c9740a2013-11-05 10:46:02 +0800370 device_wakeup_enable(hcd->self.controller);
David Brownellbd350782006-07-31 07:29:39 -0700371 return 0;
Russell King55c381e2008-09-04 14:07:22 +0100372err3:
373 iounmap(hcd->regs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374err2:
375 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
376err1:
377 usb_put_hcd(hcd);
378err0:
David Brownellbd350782006-07-31 07:29:39 -0700379 clk_put(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 clk_put(usb_host_ck);
381 return retval;
382}
383
384
385/* may be called with controller, bus, and devices active */
386
387/**
388 * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
389 * @dev: USB Host Controller being removed
390 * Context: !in_interrupt()
391 *
392 * Reverses the effect of usb_hcd_omap_probe(), first invoking
393 * the HCD's stop() method. It is always called from a thread
394 * context, normally "rmmod", "apmd", or something similar.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 */
David Brownellbd350782006-07-31 07:29:39 -0700396static inline void
397usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398{
Manjunath Goudarde57a152013-09-21 16:38:39 +0530399 dev_dbg(hcd->self.controller, "stopping USB Controller\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 usb_remove_hcd(hcd);
Manjunath Goudarde57a152013-09-21 16:38:39 +0530401 omap_ohci_clock_power(0);
Greg Kroah-Hartmanff9cce82012-07-05 15:35:41 -0700402 if (!IS_ERR_OR_NULL(hcd->phy)) {
Richard Zhaoc2e935a2012-06-13 20:34:12 +0800403 (void) otg_set_host(hcd->phy->otg, 0);
Greg Kroah-Hartmanff9cce82012-07-05 15:35:41 -0700404 usb_put_phy(hcd->phy);
David Brownellbd350782006-07-31 07:29:39 -0700405 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 if (machine_is_omap_osk())
Jarkko Nikula944e1bf2008-12-10 17:35:31 -0800407 gpio_free(9);
Russell King55c381e2008-09-04 14:07:22 +0100408 iounmap(hcd->regs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
410 usb_put_hcd(hcd);
David Brownellbd350782006-07-31 07:29:39 -0700411 clk_put(usb_dc_ck);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 clk_put(usb_host_ck);
413}
414
415/*-------------------------------------------------------------------------*/
416
Russell King3ae5eae2005-11-09 22:32:44 +0000417static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
Russell King3ae5eae2005-11-09 22:32:44 +0000419 return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420}
421
Russell King3ae5eae2005-11-09 22:32:44 +0000422static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423{
Russell King3ae5eae2005-11-09 22:32:44 +0000424 struct usb_hcd *hcd = platform_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
Russell King3ae5eae2005-11-09 22:32:44 +0000426 usb_hcd_omap_remove(hcd, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
428 return 0;
429}
430
431/*-------------------------------------------------------------------------*/
432
433#ifdef CONFIG_PM
434
Manjunath Goudar10abfa12013-10-04 09:58:13 +0530435static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436{
Manjunath Goudar10abfa12013-10-04 09:58:13 +0530437 struct usb_hcd *hcd = platform_get_drvdata(pdev);
438 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
439 bool do_wakeup = device_may_wakeup(&pdev->dev);
440 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
David Brownellf197b2c2005-09-22 22:42:53 -0700442 if (time_before(jiffies, ohci->next_statechange))
443 msleep(5);
444 ohci->next_statechange = jiffies;
445
Manjunath Goudar10abfa12013-10-04 09:58:13 +0530446 ret = ohci_suspend(hcd, do_wakeup);
447 if (ret)
448 return ret;
449
David Brownellf197b2c2005-09-22 22:42:53 -0700450 omap_ohci_clock_power(0);
Manjunath Goudar10abfa12013-10-04 09:58:13 +0530451 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452}
453
Russell King3ae5eae2005-11-09 22:32:44 +0000454static int ohci_omap_resume(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455{
Alan Stern43bbb7e2008-04-03 18:03:17 -0400456 struct usb_hcd *hcd = platform_get_drvdata(dev);
457 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
david-b@pacbell.netb404a5b2005-06-29 06:59:14 -0700459 if (time_before(jiffies, ohci->next_statechange))
460 msleep(5);
461 ohci->next_statechange = jiffies;
David Brownellf197b2c2005-09-22 22:42:53 -0700462
david-b@pacbell.netb404a5b2005-06-29 06:59:14 -0700463 omap_ohci_clock_power(1);
Florian Fainellicfa49b42012-10-08 15:11:29 +0200464 ohci_resume(hcd, false);
David Brownellf197b2c2005-09-22 22:42:53 -0700465 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466}
467
468#endif
469
470/*-------------------------------------------------------------------------*/
471
472/*
473 * Driver definition to register with the OMAP bus
474 */
Russell King3ae5eae2005-11-09 22:32:44 +0000475static struct platform_driver ohci_hcd_omap_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 .probe = ohci_hcd_omap_drv_probe,
477 .remove = ohci_hcd_omap_drv_remove,
David Brownelldd9048a2006-12-05 03:18:31 -0800478 .shutdown = usb_hcd_platform_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479#ifdef CONFIG_PM
480 .suspend = ohci_omap_suspend,
481 .resume = ohci_omap_resume,
482#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000483 .driver = {
484 .owner = THIS_MODULE,
485 .name = "ohci",
486 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487};
488
Manjunath Goudarde57a152013-09-21 16:38:39 +0530489static const struct ohci_driver_overrides omap_overrides __initconst = {
490 .product_desc = "OMAP OHCI",
491 .reset = ohci_omap_reset
492};
493
494static int __init ohci_omap_init(void)
495{
496 if (usb_disabled())
497 return -ENODEV;
498
499 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
500
501 ohci_init_driver(&ohci_omap_hc_driver, &omap_overrides);
502 return platform_driver_register(&ohci_hcd_omap_driver);
503}
504module_init(ohci_omap_init);
505
506static void __exit ohci_omap_cleanup(void)
507{
508 platform_driver_unregister(&ohci_hcd_omap_driver);
509}
510module_exit(ohci_omap_cleanup);
511
512MODULE_DESCRIPTION(DRIVER_DESC);
Kay Sieversf4fce612008-04-10 21:29:22 -0700513MODULE_ALIAS("platform:ohci");
Manjunath Goudarde57a152013-09-21 16:38:39 +0530514MODULE_LICENSE("GPL");