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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * ehci-omap.c - driver for USBHOST on OMAP3/4 processors
4 *
5 * Bus Glue for the EHCI controllers in OMAP3/4
6 * Tested on several OMAP3 boards, and OMAP4 Pandaboard
7 *
8 * Copyright (C) 2007-2013 Texas Instruments, Inc.
9 * Author: Vikram Pandita <vikram.pandita@ti.com>
10 * Author: Anand Gadiyar <gadiyar@ti.com>
11 * Author: Keshava Munegowda <keshava_mgowda@ti.com>
12 * Author: Roger Quadros <rogerq@ti.com>
13 *
14 * Copyright (C) 2009 Nokia Corporation
15 * Contact: Felipe Balbi <felipe.balbi@nokia.com>
16 *
17 * Based on "ehci-fsl.c" and "ehci-au1xxx.c" ehci glue layers
18 */
19
20#include <linux/kernel.h>
21#include <linux/module.h>
22#include <linux/io.h>
23#include <linux/platform_device.h>
24#include <linux/slab.h>
25#include <linux/usb/ulpi.h>
26#include <linux/pm_runtime.h>
27#include <linux/clk.h>
28#include <linux/usb.h>
29#include <linux/usb/hcd.h>
30#include <linux/of.h>
31#include <linux/dma-mapping.h>
32
33#include "ehci.h"
34
35#include <linux/platform_data/usb-omap.h>
36
37/* EHCI Register Set */
38#define EHCI_INSNREG04 (0xA0)
39#define EHCI_INSNREG04_DISABLE_UNSUSPEND (1 << 5)
40#define EHCI_INSNREG05_ULPI (0xA4)
41#define EHCI_INSNREG05_ULPI_CONTROL_SHIFT 31
42#define EHCI_INSNREG05_ULPI_PORTSEL_SHIFT 24
43#define EHCI_INSNREG05_ULPI_OPSEL_SHIFT 22
44#define EHCI_INSNREG05_ULPI_REGADD_SHIFT 16
45#define EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT 8
46#define EHCI_INSNREG05_ULPI_WRDATA_SHIFT 0
47
48#define DRIVER_DESC "OMAP-EHCI Host Controller driver"
49
50static const char hcd_name[] = "ehci-omap";
51
52/*-------------------------------------------------------------------------*/
53
54struct omap_hcd {
55 struct usb_phy *phy[OMAP3_HS_USB_PORTS]; /* one PHY for each port */
56 int nports;
57};
58
59static inline void ehci_write(void __iomem *base, u32 reg, u32 val)
60{
61 __raw_writel(val, base + reg);
62}
63
64/* configure so an HC device and id are always provided */
65/* always called with process context; sleeping is OK */
66
67static struct hc_driver __read_mostly ehci_omap_hc_driver;
68
69static const struct ehci_driver_overrides ehci_omap_overrides __initconst = {
70 .extra_priv_size = sizeof(struct omap_hcd),
71};
72
73/**
74 * ehci_hcd_omap_probe - initialize TI-based HCDs
75 * @pdev: Pointer to this platform device's information
76 *
77 * Allocates basic resources for this USB host controller, and
78 * then invokes the start() method for the HCD associated with it
79 * through the hotplug entry's driver_data.
80 */
81static int ehci_hcd_omap_probe(struct platform_device *pdev)
82{
83 struct device *dev = &pdev->dev;
84 struct usbhs_omap_platform_data *pdata = dev_get_platdata(dev);
85 struct resource *res;
86 struct usb_hcd *hcd;
87 void __iomem *regs;
88 int ret;
89 int irq;
90 int i;
91 struct omap_hcd *omap;
92
93 if (usb_disabled())
94 return -ENODEV;
95
96 if (!dev->parent) {
97 dev_err(dev, "Missing parent device\n");
98 return -ENODEV;
99 }
100
101 /* For DT boot, get platform data from parent. i.e. usbhshost */
102 if (dev->of_node) {
103 pdata = dev_get_platdata(dev->parent);
104 dev->platform_data = pdata;
105 }
106
107 if (!pdata) {
108 dev_err(dev, "Missing platform data\n");
109 return -ENODEV;
110 }
111
112 irq = platform_get_irq(pdev, 0);
113 if (irq < 0)
114 return irq;
115
116 regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
117 if (IS_ERR(regs))
118 return PTR_ERR(regs);
119
120 /*
121 * Right now device-tree probed devices don't get dma_mask set.
122 * Since shared usb code relies on it, set it here for now.
123 * Once we have dma capability bindings this can go away.
124 */
125 ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
126 if (ret)
127 return ret;
128
129 ret = -ENODEV;
130 hcd = usb_create_hcd(&ehci_omap_hc_driver, dev,
131 dev_name(dev));
132 if (!hcd) {
133 dev_err(dev, "Failed to create HCD\n");
134 return -ENOMEM;
135 }
136
137 hcd->rsrc_start = res->start;
138 hcd->rsrc_len = resource_size(res);
139 hcd->regs = regs;
140 hcd_to_ehci(hcd)->caps = regs;
141
142 omap = (struct omap_hcd *)hcd_to_ehci(hcd)->priv;
143 omap->nports = pdata->nports;
144
145 platform_set_drvdata(pdev, hcd);
146
147 /* get the PHY devices if needed */
148 for (i = 0 ; i < omap->nports ; i++) {
149 struct usb_phy *phy;
150
151 /* get the PHY device */
152 phy = devm_usb_get_phy_by_phandle(dev, "phys", i);
153 if (IS_ERR(phy)) {
154 ret = PTR_ERR(phy);
155 if (ret == -ENODEV) { /* no PHY */
156 phy = NULL;
157 continue;
158 }
159
160 if (ret != -EPROBE_DEFER)
161 dev_err(dev, "Can't get PHY for port %d: %d\n",
162 i, ret);
163 goto err_phy;
164 }
165
166 omap->phy[i] = phy;
167
168 if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_PHY) {
169 usb_phy_init(omap->phy[i]);
170 /* bring PHY out of suspend */
171 usb_phy_set_suspend(omap->phy[i], 0);
172 }
173 }
174
175 pm_runtime_enable(dev);
176 pm_runtime_get_sync(dev);
177
178 /*
179 * An undocumented "feature" in the OMAP3 EHCI controller,
180 * causes suspended ports to be taken out of suspend when
181 * the USBCMD.Run/Stop bit is cleared (for example when
182 * we do ehci_bus_suspend).
183 * This breaks suspend-resume if the root-hub is allowed
184 * to suspend. Writing 1 to this undocumented register bit
185 * disables this feature and restores normal behavior.
186 */
187 ehci_write(regs, EHCI_INSNREG04,
188 EHCI_INSNREG04_DISABLE_UNSUSPEND);
189
190 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
191 if (ret) {
192 dev_err(dev, "failed to add hcd with err %d\n", ret);
193 goto err_pm_runtime;
194 }
195 device_wakeup_enable(hcd->self.controller);
196
197 /*
198 * Bring PHYs out of reset for non PHY modes.
199 * Even though HSIC mode is a PHY-less mode, the reset
200 * line exists between the chips and can be modelled
201 * as a PHY device for reset control.
202 */
203 for (i = 0; i < omap->nports; i++) {
204 if (!omap->phy[i] ||
205 pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_PHY)
206 continue;
207
208 usb_phy_init(omap->phy[i]);
209 /* bring PHY out of suspend */
210 usb_phy_set_suspend(omap->phy[i], 0);
211 }
212
213 return 0;
214
215err_pm_runtime:
216 pm_runtime_put_sync(dev);
217 pm_runtime_disable(dev);
218
219err_phy:
220 for (i = 0; i < omap->nports; i++) {
221 if (omap->phy[i])
222 usb_phy_shutdown(omap->phy[i]);
223 }
224
225 usb_put_hcd(hcd);
226
227 return ret;
228}
229
230
231/**
232 * ehci_hcd_omap_remove - shutdown processing for EHCI HCDs
233 * @pdev: USB Host Controller being removed
234 *
235 * Reverses the effect of usb_ehci_hcd_omap_probe(), first invoking
236 * the HCD's stop() method. It is always called from a thread
237 * context, normally "rmmod", "apmd", or something similar.
238 */
239static void ehci_hcd_omap_remove(struct platform_device *pdev)
240{
241 struct device *dev = &pdev->dev;
242 struct usb_hcd *hcd = dev_get_drvdata(dev);
243 struct omap_hcd *omap = (struct omap_hcd *)hcd_to_ehci(hcd)->priv;
244 int i;
245
246 usb_remove_hcd(hcd);
247
248 for (i = 0; i < omap->nports; i++) {
249 if (omap->phy[i])
250 usb_phy_shutdown(omap->phy[i]);
251 }
252
253 usb_put_hcd(hcd);
254 pm_runtime_put_sync(dev);
255 pm_runtime_disable(dev);
256}
257
258static const struct of_device_id omap_ehci_dt_ids[] = {
259 { .compatible = "ti,ehci-omap" },
260 { }
261};
262
263MODULE_DEVICE_TABLE(of, omap_ehci_dt_ids);
264
265static struct platform_driver ehci_hcd_omap_driver = {
266 .probe = ehci_hcd_omap_probe,
267 .remove_new = ehci_hcd_omap_remove,
268 .shutdown = usb_hcd_platform_shutdown,
269 /*.suspend = ehci_hcd_omap_suspend, */
270 /*.resume = ehci_hcd_omap_resume, */
271 .driver = {
272 .name = hcd_name,
273 .of_match_table = omap_ehci_dt_ids,
274 }
275};
276
277/*-------------------------------------------------------------------------*/
278
279static int __init ehci_omap_init(void)
280{
281 if (usb_disabled())
282 return -ENODEV;
283
284 ehci_init_driver(&ehci_omap_hc_driver, &ehci_omap_overrides);
285 return platform_driver_register(&ehci_hcd_omap_driver);
286}
287module_init(ehci_omap_init);
288
289static void __exit ehci_omap_cleanup(void)
290{
291 platform_driver_unregister(&ehci_hcd_omap_driver);
292}
293module_exit(ehci_omap_cleanup);
294
295MODULE_ALIAS("platform:ehci-omap");
296MODULE_AUTHOR("Texas Instruments, Inc.");
297MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
298MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>");
299
300MODULE_DESCRIPTION(DRIVER_DESC);
301MODULE_LICENSE("GPL");
1/*
2 * ehci-omap.c - driver for USBHOST on OMAP3/4 processors
3 *
4 * Bus Glue for the EHCI controllers in OMAP3/4
5 * Tested on several OMAP3 boards, and OMAP4 Pandaboard
6 *
7 * Copyright (C) 2007-2011 Texas Instruments, Inc.
8 * Author: Vikram Pandita <vikram.pandita@ti.com>
9 * Author: Anand Gadiyar <gadiyar@ti.com>
10 * Author: Keshava Munegowda <keshava_mgowda@ti.com>
11 *
12 * Copyright (C) 2009 Nokia Corporation
13 * Contact: Felipe Balbi <felipe.balbi@nokia.com>
14 *
15 * Based on "ehci-fsl.c" and "ehci-au1xxx.c" ehci glue layers
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 *
31 * TODO (last updated Feb 27, 2010):
32 * - add kernel-doc
33 * - enable AUTOIDLE
34 * - add suspend/resume
35 * - add HSIC and TLL support
36 * - convert to use hwmod and runtime PM
37 */
38
39#include <linux/platform_device.h>
40#include <linux/slab.h>
41#include <linux/usb/ulpi.h>
42#include <plat/usb.h>
43#include <linux/regulator/consumer.h>
44#include <linux/pm_runtime.h>
45#include <linux/gpio.h>
46#include <linux/clk.h>
47
48/* EHCI Register Set */
49#define EHCI_INSNREG04 (0xA0)
50#define EHCI_INSNREG04_DISABLE_UNSUSPEND (1 << 5)
51#define EHCI_INSNREG05_ULPI (0xA4)
52#define EHCI_INSNREG05_ULPI_CONTROL_SHIFT 31
53#define EHCI_INSNREG05_ULPI_PORTSEL_SHIFT 24
54#define EHCI_INSNREG05_ULPI_OPSEL_SHIFT 22
55#define EHCI_INSNREG05_ULPI_REGADD_SHIFT 16
56#define EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT 8
57#define EHCI_INSNREG05_ULPI_WRDATA_SHIFT 0
58
59/*-------------------------------------------------------------------------*/
60
61static const struct hc_driver ehci_omap_hc_driver;
62
63
64static inline void ehci_write(void __iomem *base, u32 reg, u32 val)
65{
66 __raw_writel(val, base + reg);
67}
68
69static inline u32 ehci_read(void __iomem *base, u32 reg)
70{
71 return __raw_readl(base + reg);
72}
73
74
75static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port)
76{
77 struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
78 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
79 unsigned reg = 0;
80
81 reg = ULPI_FUNC_CTRL_RESET
82 /* FUNCTION_CTRL_SET register */
83 | (ULPI_SET(ULPI_FUNC_CTRL) << EHCI_INSNREG05_ULPI_REGADD_SHIFT)
84 /* Write */
85 | (2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT)
86 /* PORTn */
87 | ((port + 1) << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT)
88 /* start ULPI access*/
89 | (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT);
90
91 ehci_write(hcd->regs, EHCI_INSNREG05_ULPI, reg);
92
93 /* Wait for ULPI access completion */
94 while ((ehci_read(hcd->regs, EHCI_INSNREG05_ULPI)
95 & (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT))) {
96 cpu_relax();
97
98 if (time_after(jiffies, timeout)) {
99 dev_dbg(&pdev->dev, "phy reset operation timed out\n");
100 break;
101 }
102 }
103}
104
105static void disable_put_regulator(
106 struct ehci_hcd_omap_platform_data *pdata)
107{
108 int i;
109
110 for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
111 if (pdata->regulator[i]) {
112 regulator_disable(pdata->regulator[i]);
113 regulator_put(pdata->regulator[i]);
114 }
115 }
116}
117
118/* configure so an HC device and id are always provided */
119/* always called with process context; sleeping is OK */
120
121/**
122 * ehci_hcd_omap_probe - initialize TI-based HCDs
123 *
124 * Allocates basic resources for this USB host controller, and
125 * then invokes the start() method for the HCD associated with it
126 * through the hotplug entry's driver_data.
127 */
128static int ehci_hcd_omap_probe(struct platform_device *pdev)
129{
130 struct device *dev = &pdev->dev;
131 struct ehci_hcd_omap_platform_data *pdata = dev->platform_data;
132 struct resource *res;
133 struct usb_hcd *hcd;
134 void __iomem *regs;
135 struct ehci_hcd *omap_ehci;
136 int ret = -ENODEV;
137 int irq;
138 int i;
139 char supply[7];
140
141 if (usb_disabled())
142 return -ENODEV;
143
144 if (!dev->parent) {
145 dev_err(dev, "Missing parent device\n");
146 return -ENODEV;
147 }
148
149 irq = platform_get_irq_byname(pdev, "ehci-irq");
150 if (irq < 0) {
151 dev_err(dev, "EHCI irq failed\n");
152 return -ENODEV;
153 }
154
155 res = platform_get_resource_byname(pdev,
156 IORESOURCE_MEM, "ehci");
157 if (!res) {
158 dev_err(dev, "UHH EHCI get resource failed\n");
159 return -ENODEV;
160 }
161
162 regs = ioremap(res->start, resource_size(res));
163 if (!regs) {
164 dev_err(dev, "UHH EHCI ioremap failed\n");
165 return -ENOMEM;
166 }
167
168 hcd = usb_create_hcd(&ehci_omap_hc_driver, dev,
169 dev_name(dev));
170 if (!hcd) {
171 dev_err(dev, "failed to create hcd with err %d\n", ret);
172 ret = -ENOMEM;
173 goto err_io;
174 }
175
176 hcd->rsrc_start = res->start;
177 hcd->rsrc_len = resource_size(res);
178 hcd->regs = regs;
179
180 /* get ehci regulator and enable */
181 for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
182 if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY) {
183 pdata->regulator[i] = NULL;
184 continue;
185 }
186 snprintf(supply, sizeof(supply), "hsusb%d", i);
187 pdata->regulator[i] = regulator_get(dev, supply);
188 if (IS_ERR(pdata->regulator[i])) {
189 pdata->regulator[i] = NULL;
190 dev_dbg(dev,
191 "failed to get ehci port%d regulator\n", i);
192 } else {
193 regulator_enable(pdata->regulator[i]);
194 }
195 }
196
197 /* Hold PHYs in reset while initializing EHCI controller */
198 if (pdata->phy_reset) {
199 if (gpio_is_valid(pdata->reset_gpio_port[0]))
200 gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0);
201
202 if (gpio_is_valid(pdata->reset_gpio_port[1]))
203 gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0);
204
205 /* Hold the PHY in RESET for enough time till DIR is high */
206 udelay(10);
207 }
208
209 pm_runtime_enable(dev);
210 pm_runtime_get_sync(dev);
211
212 /*
213 * An undocumented "feature" in the OMAP3 EHCI controller,
214 * causes suspended ports to be taken out of suspend when
215 * the USBCMD.Run/Stop bit is cleared (for example when
216 * we do ehci_bus_suspend).
217 * This breaks suspend-resume if the root-hub is allowed
218 * to suspend. Writing 1 to this undocumented register bit
219 * disables this feature and restores normal behavior.
220 */
221 ehci_write(regs, EHCI_INSNREG04,
222 EHCI_INSNREG04_DISABLE_UNSUSPEND);
223
224 /* Soft reset the PHY using PHY reset command over ULPI */
225 if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
226 omap_ehci_soft_phy_reset(pdev, 0);
227 if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
228 omap_ehci_soft_phy_reset(pdev, 1);
229
230 omap_ehci = hcd_to_ehci(hcd);
231 omap_ehci->sbrn = 0x20;
232
233 /* we know this is the memory we want, no need to ioremap again */
234 omap_ehci->caps = hcd->regs;
235 omap_ehci->regs = hcd->regs
236 + HC_LENGTH(ehci, readl(&omap_ehci->caps->hc_capbase));
237
238 dbg_hcs_params(omap_ehci, "reset");
239 dbg_hcc_params(omap_ehci, "reset");
240
241 /* cache this readonly data; minimize chip reads */
242 omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params);
243
244 ehci_reset(omap_ehci);
245 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
246 if (ret) {
247 dev_err(dev, "failed to add hcd with err %d\n", ret);
248 goto err_add_hcd;
249 }
250
251 if (pdata->phy_reset) {
252 /* Hold the PHY in RESET for enough time till
253 * PHY is settled and ready
254 */
255 udelay(10);
256
257 if (gpio_is_valid(pdata->reset_gpio_port[0]))
258 gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
259
260 if (gpio_is_valid(pdata->reset_gpio_port[1]))
261 gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
262 }
263
264 /* root ports should always stay powered */
265 ehci_port_power(omap_ehci, 1);
266
267
268 return 0;
269
270err_add_hcd:
271 disable_put_regulator(pdata);
272 pm_runtime_put_sync(dev);
273
274err_io:
275 iounmap(regs);
276 return ret;
277}
278
279
280/**
281 * ehci_hcd_omap_remove - shutdown processing for EHCI HCDs
282 * @pdev: USB Host Controller being removed
283 *
284 * Reverses the effect of usb_ehci_hcd_omap_probe(), first invoking
285 * the HCD's stop() method. It is always called from a thread
286 * context, normally "rmmod", "apmd", or something similar.
287 */
288static int ehci_hcd_omap_remove(struct platform_device *pdev)
289{
290 struct device *dev = &pdev->dev;
291 struct usb_hcd *hcd = dev_get_drvdata(dev);
292 struct ehci_hcd_omap_platform_data *pdata = dev->platform_data;
293
294 usb_remove_hcd(hcd);
295 disable_put_regulator(dev->platform_data);
296 iounmap(hcd->regs);
297 usb_put_hcd(hcd);
298
299 pm_runtime_put_sync(dev);
300 pm_runtime_disable(dev);
301
302 if (pdata->phy_reset) {
303 if (gpio_is_valid(pdata->reset_gpio_port[0]))
304 gpio_free(pdata->reset_gpio_port[0]);
305
306 if (gpio_is_valid(pdata->reset_gpio_port[1]))
307 gpio_free(pdata->reset_gpio_port[1]);
308 }
309 return 0;
310}
311
312static void ehci_hcd_omap_shutdown(struct platform_device *pdev)
313{
314 struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
315
316 if (hcd->driver->shutdown)
317 hcd->driver->shutdown(hcd);
318}
319
320static struct platform_driver ehci_hcd_omap_driver = {
321 .probe = ehci_hcd_omap_probe,
322 .remove = ehci_hcd_omap_remove,
323 .shutdown = ehci_hcd_omap_shutdown,
324 /*.suspend = ehci_hcd_omap_suspend, */
325 /*.resume = ehci_hcd_omap_resume, */
326 .driver = {
327 .name = "ehci-omap",
328 }
329};
330
331/*-------------------------------------------------------------------------*/
332
333static const struct hc_driver ehci_omap_hc_driver = {
334 .description = hcd_name,
335 .product_desc = "OMAP-EHCI Host Controller",
336 .hcd_priv_size = sizeof(struct ehci_hcd),
337
338 /*
339 * generic hardware linkage
340 */
341 .irq = ehci_irq,
342 .flags = HCD_MEMORY | HCD_USB2,
343
344 /*
345 * basic lifecycle operations
346 */
347 .reset = ehci_init,
348 .start = ehci_run,
349 .stop = ehci_stop,
350 .shutdown = ehci_shutdown,
351
352 /*
353 * managing i/o requests and associated device resources
354 */
355 .urb_enqueue = ehci_urb_enqueue,
356 .urb_dequeue = ehci_urb_dequeue,
357 .endpoint_disable = ehci_endpoint_disable,
358 .endpoint_reset = ehci_endpoint_reset,
359
360 /*
361 * scheduling support
362 */
363 .get_frame_number = ehci_get_frame,
364
365 /*
366 * root hub support
367 */
368 .hub_status_data = ehci_hub_status_data,
369 .hub_control = ehci_hub_control,
370 .bus_suspend = ehci_bus_suspend,
371 .bus_resume = ehci_bus_resume,
372
373 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
374};
375
376MODULE_ALIAS("platform:omap-ehci");
377MODULE_AUTHOR("Texas Instruments, Inc.");
378MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
379