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Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +05301/*
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +05302 * NOP USB transceiver for all USB transceiver which are either built-in
3 * into USB IP or which are mostly autonomous.
4 *
5 * Copyright (C) 2009 Texas Instruments Inc
6 * Author: Ajay Kumar Gupta <ajay.gupta@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 * Current status:
David Brownellcc835e32009-03-31 12:28:31 -070023 * This provides a "nop" transceiver for PHYs which are
24 * autonomous such as isp1504, isp1707, etc.
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053025 */
26
27#include <linux/module.h>
28#include <linux/platform_device.h>
29#include <linux/dma-mapping.h>
Robert Jarzmik7acc9972014-12-06 22:05:15 +010030#include <linux/usb/gadget.h>
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053031#include <linux/usb/otg.h>
Felipe Balbid7078df2014-04-16 15:28:32 -050032#include <linux/usb/usb_phy_generic.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090033#include <linux/slab.h>
Roger Quadros2319fb82013-03-12 13:24:21 +020034#include <linux/clk.h>
Roger Quadros58f735f2013-03-12 13:24:22 +020035#include <linux/regulator/consumer.h>
Roger Quadros0eba3872013-03-12 13:24:25 +020036#include <linux/of.h>
Roger Quadrosbd27fa42013-09-24 11:53:48 +030037#include <linux/of_gpio.h>
38#include <linux/gpio.h>
39#include <linux/delay.h>
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053040
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +020041#include "phy-generic.h"
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053042
Robert Jarzmik7acc9972014-12-06 22:05:15 +010043#define VBUS_IRQ_FLAGS \
Robert Jarzmik0f4ff5f2015-01-30 17:22:46 +010044 (IRQF_SHARED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | \
45 IRQF_ONESHOT)
Robert Jarzmik7acc9972014-12-06 22:05:15 +010046
Felipe Balbi2f36ff62014-04-16 16:16:33 -050047struct platform_device *usb_phy_generic_register(void)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053048{
Felipe Balbi2f36ff62014-04-16 16:16:33 -050049 return platform_device_register_simple("usb_phy_generic",
50 PLATFORM_DEVID_AUTO, NULL, 0);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053051}
Felipe Balbi4525bee2014-04-16 15:20:44 -050052EXPORT_SYMBOL_GPL(usb_phy_generic_register);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053053
Felipe Balbi2f36ff62014-04-16 16:16:33 -050054void usb_phy_generic_unregister(struct platform_device *pdev)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053055{
Felipe Balbi2f36ff62014-04-16 16:16:33 -050056 platform_device_unregister(pdev);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053057}
Felipe Balbi4525bee2014-04-16 15:20:44 -050058EXPORT_SYMBOL_GPL(usb_phy_generic_unregister);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053059
Heikki Krogerus86753812012-02-13 13:24:02 +020060static int nop_set_suspend(struct usb_phy *x, int suspend)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053061{
Peter Chena0fe0412016-10-31 10:18:20 +080062 struct usb_phy_generic *nop = dev_get_drvdata(x->dev);
63
64 if (!IS_ERR(nop->clk)) {
65 if (suspend)
66 clk_disable_unprepare(nop->clk);
67 else
68 clk_prepare_enable(nop->clk);
69 }
70
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +053071 return 0;
72}
73
Fabio Estevam168bdb82015-02-03 19:18:17 -020074static void nop_reset(struct usb_phy_generic *nop)
Roger Quadrosbd27fa42013-09-24 11:53:48 +030075{
Fabio Estevam74379992015-01-28 13:19:17 -020076 if (!nop->gpiod_reset)
77 return;
Roger Quadrosbd27fa42013-09-24 11:53:48 +030078
Fabio Estevam168bdb82015-02-03 19:18:17 -020079 gpiod_set_value(nop->gpiod_reset, 1);
Fabio Estevam74379992015-01-28 13:19:17 -020080 usleep_range(10000, 20000);
Fabio Estevam168bdb82015-02-03 19:18:17 -020081 gpiod_set_value(nop->gpiod_reset, 0);
Roger Quadrosbd27fa42013-09-24 11:53:48 +030082}
83
Robert Jarzmik7acc9972014-12-06 22:05:15 +010084/* interface to regulator framework */
85static void nop_set_vbus_draw(struct usb_phy_generic *nop, unsigned mA)
86{
87 struct regulator *vbus_draw = nop->vbus_draw;
88 int enabled;
89 int ret;
90
91 if (!vbus_draw)
92 return;
93
94 enabled = nop->vbus_draw_enabled;
95 if (mA) {
96 regulator_set_current_limit(vbus_draw, 0, 1000 * mA);
97 if (!enabled) {
98 ret = regulator_enable(vbus_draw);
99 if (ret < 0)
100 return;
101 nop->vbus_draw_enabled = 1;
102 }
103 } else {
104 if (enabled) {
105 ret = regulator_disable(vbus_draw);
106 if (ret < 0)
107 return;
108 nop->vbus_draw_enabled = 0;
109 }
110 }
111 nop->mA = mA;
112}
113
114
115static irqreturn_t nop_gpio_vbus_thread(int irq, void *data)
116{
117 struct usb_phy_generic *nop = data;
118 struct usb_otg *otg = nop->phy.otg;
119 int vbus, status;
120
121 vbus = gpiod_get_value(nop->gpiod_vbus);
122 if ((vbus ^ nop->vbus) == 0)
123 return IRQ_HANDLED;
124 nop->vbus = vbus;
125
126 if (vbus) {
127 status = USB_EVENT_VBUS;
128 otg->state = OTG_STATE_B_PERIPHERAL;
129 nop->phy.last_event = status;
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100130
131 /* drawing a "unit load" is *always* OK, except for OTG */
132 nop_set_vbus_draw(nop, 100);
133
134 atomic_notifier_call_chain(&nop->phy.notifier, status,
135 otg->gadget);
136 } else {
137 nop_set_vbus_draw(nop, 0);
138
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100139 status = USB_EVENT_NONE;
140 otg->state = OTG_STATE_B_IDLE;
141 nop->phy.last_event = status;
142
143 atomic_notifier_call_chain(&nop->phy.notifier, status,
144 otg->gadget);
145 }
146 return IRQ_HANDLED;
147}
148
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200149int usb_gen_phy_init(struct usb_phy *phy)
Roger Quadros2319fb82013-03-12 13:24:21 +0200150{
Felipe Balbi4525bee2014-04-16 15:20:44 -0500151 struct usb_phy_generic *nop = dev_get_drvdata(phy->dev);
Fabio Estevam7c113f72016-08-22 22:45:36 -0300152 int ret;
Roger Quadros2319fb82013-03-12 13:24:21 +0200153
Roger Quadros58f735f2013-03-12 13:24:22 +0200154 if (!IS_ERR(nop->vcc)) {
155 if (regulator_enable(nop->vcc))
156 dev_err(phy->dev, "Failed to enable power\n");
157 }
158
Fabio Estevam7c113f72016-08-22 22:45:36 -0300159 if (!IS_ERR(nop->clk)) {
160 ret = clk_prepare_enable(nop->clk);
161 if (ret)
162 return ret;
163 }
Roger Quadros2319fb82013-03-12 13:24:21 +0200164
Fabio Estevam168bdb82015-02-03 19:18:17 -0200165 nop_reset(nop);
Roger Quadrosad63ebfc2013-03-12 13:24:23 +0200166
Roger Quadros2319fb82013-03-12 13:24:21 +0200167 return 0;
168}
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200169EXPORT_SYMBOL_GPL(usb_gen_phy_init);
Roger Quadros2319fb82013-03-12 13:24:21 +0200170
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200171void usb_gen_phy_shutdown(struct usb_phy *phy)
Roger Quadros2319fb82013-03-12 13:24:21 +0200172{
Felipe Balbi4525bee2014-04-16 15:20:44 -0500173 struct usb_phy_generic *nop = dev_get_drvdata(phy->dev);
Roger Quadros2319fb82013-03-12 13:24:21 +0200174
Fabio Estevam168bdb82015-02-03 19:18:17 -0200175 gpiod_set_value(nop->gpiod_reset, 1);
Roger Quadrosad63ebfc2013-03-12 13:24:23 +0200176
Roger Quadros2319fb82013-03-12 13:24:21 +0200177 if (!IS_ERR(nop->clk))
Mark Brown4d175f32013-08-11 15:26:04 +0100178 clk_disable_unprepare(nop->clk);
Roger Quadros58f735f2013-03-12 13:24:22 +0200179
180 if (!IS_ERR(nop->vcc)) {
181 if (regulator_disable(nop->vcc))
182 dev_err(phy->dev, "Failed to disable power\n");
183 }
Roger Quadros2319fb82013-03-12 13:24:21 +0200184}
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200185EXPORT_SYMBOL_GPL(usb_gen_phy_shutdown);
Roger Quadros2319fb82013-03-12 13:24:21 +0200186
Heikki Krogerus41adf102012-02-13 13:24:10 +0200187static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530188{
Heikki Krogerus41adf102012-02-13 13:24:10 +0200189 if (!otg)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530190 return -ENODEV;
191
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530192 if (!gadget) {
Heikki Krogerus41adf102012-02-13 13:24:10 +0200193 otg->gadget = NULL;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530194 return -ENODEV;
195 }
196
Heikki Krogerus41adf102012-02-13 13:24:10 +0200197 otg->gadget = gadget;
Maarten ter Huurne2eafe932016-02-28 16:34:16 +0100198 if (otg->state == OTG_STATE_B_PERIPHERAL)
Robert Jarzmik77e012a2016-07-08 22:09:07 +0200199 atomic_notifier_call_chain(&otg->usb_phy->notifier,
200 USB_EVENT_VBUS, otg->gadget);
Maarten ter Huurne2eafe932016-02-28 16:34:16 +0100201 else
202 otg->state = OTG_STATE_B_IDLE;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530203 return 0;
204}
205
Heikki Krogerus41adf102012-02-13 13:24:10 +0200206static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530207{
Heikki Krogerus41adf102012-02-13 13:24:10 +0200208 if (!otg)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530209 return -ENODEV;
210
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530211 if (!host) {
Heikki Krogerus41adf102012-02-13 13:24:10 +0200212 otg->host = NULL;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530213 return -ENODEV;
214 }
215
Heikki Krogerus41adf102012-02-13 13:24:10 +0200216 otg->host = host;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530217 return 0;
218}
219
Felipe Balbi4525bee2014-04-16 15:20:44 -0500220int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
221 struct usb_phy_generic_platform_data *pdata)
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200222{
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500223 enum usb_phy_type type = USB_PHY_TYPE_USB2;
Robert Jarzmike9f2cefb2014-12-06 22:05:13 +0100224 int err = 0;
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200225
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500226 u32 clk_rate = 0;
227 bool needs_vcc = false;
228
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500229 if (dev->of_node) {
230 struct device_node *node = dev->of_node;
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500231
232 if (of_property_read_u32(node, "clock-frequency", &clk_rate))
233 clk_rate = 0;
234
235 needs_vcc = of_property_read_bool(node, "vcc-supply");
Uwe Kleine-König88167fc2015-07-06 11:09:49 +0200236 nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
237 GPIOD_ASIS);
Robert Jarzmik9eb07972015-01-30 17:22:45 +0100238 err = PTR_ERR_OR_ZERO(nop->gpiod_reset);
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100239 if (!err) {
Paul Zimmermanda89dba2015-01-15 02:45:12 +0000240 nop->gpiod_vbus = devm_gpiod_get_optional(dev,
Uwe Kleine-König88167fc2015-07-06 11:09:49 +0200241 "vbus-detect",
242 GPIOD_ASIS);
Robert Jarzmik9eb07972015-01-30 17:22:45 +0100243 err = PTR_ERR_OR_ZERO(nop->gpiod_vbus);
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100244 }
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500245 } else if (pdata) {
246 type = pdata->type;
247 clk_rate = pdata->clk_rate;
248 needs_vcc = pdata->needs_vcc;
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100249 if (gpio_is_valid(pdata->gpio_reset)) {
Roger Quadros762982d2015-08-13 13:28:42 +0300250 err = devm_gpio_request_one(dev, pdata->gpio_reset,
251 GPIOF_ACTIVE_LOW,
Robert Jarzmike9f2cefb2014-12-06 22:05:13 +0100252 dev_name(dev));
253 if (!err)
254 nop->gpiod_reset =
255 gpio_to_desc(pdata->gpio_reset);
256 }
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100257 nop->gpiod_vbus = pdata->gpiod_vbus;
Robert Jarzmike9f2cefb2014-12-06 22:05:13 +0100258 }
259
260 if (err == -EPROBE_DEFER)
261 return -EPROBE_DEFER;
262 if (err) {
Robert Jarzmik9eb07972015-01-30 17:22:45 +0100263 dev_err(dev, "Error requesting RESET or VBUS GPIO\n");
Robert Jarzmike9f2cefb2014-12-06 22:05:13 +0100264 return err;
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500265 }
Robert Jarzmik9eb07972015-01-30 17:22:45 +0100266 if (nop->gpiod_reset)
267 gpiod_direction_output(nop->gpiod_reset, 1);
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500268
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200269 nop->phy.otg = devm_kzalloc(dev, sizeof(*nop->phy.otg),
270 GFP_KERNEL);
271 if (!nop->phy.otg)
272 return -ENOMEM;
273
274 nop->clk = devm_clk_get(dev, "main_clk");
275 if (IS_ERR(nop->clk)) {
276 dev_dbg(dev, "Can't get phy clock: %ld\n",
277 PTR_ERR(nop->clk));
278 }
279
280 if (!IS_ERR(nop->clk) && clk_rate) {
281 err = clk_set_rate(nop->clk, clk_rate);
282 if (err) {
283 dev_err(dev, "Error setting clock rate\n");
284 return err;
285 }
286 }
287
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200288 nop->vcc = devm_regulator_get(dev, "vcc");
289 if (IS_ERR(nop->vcc)) {
290 dev_dbg(dev, "Error getting vcc regulator: %ld\n",
291 PTR_ERR(nop->vcc));
292 if (needs_vcc)
293 return -EPROBE_DEFER;
294 }
295
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200296 nop->dev = dev;
297 nop->phy.dev = nop->dev;
298 nop->phy.label = "nop-xceiv";
299 nop->phy.set_suspend = nop_set_suspend;
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200300 nop->phy.type = type;
301
Antoine Tenarte47d9252014-10-30 18:41:13 +0100302 nop->phy.otg->state = OTG_STATE_UNDEFINED;
Antoine Tenart19c1eac2014-10-30 18:41:14 +0100303 nop->phy.otg->usb_phy = &nop->phy;
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200304 nop->phy.otg->set_host = nop_set_host;
305 nop->phy.otg->set_peripheral = nop_set_peripheral;
306
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200307 return 0;
308}
309EXPORT_SYMBOL_GPL(usb_phy_gen_create_phy);
310
Felipe Balbi4525bee2014-04-16 15:20:44 -0500311static int usb_phy_generic_probe(struct platform_device *pdev)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530312{
Roger Quadros0eba3872013-03-12 13:24:25 +0200313 struct device *dev = &pdev->dev;
Felipe Balbi4525bee2014-04-16 15:20:44 -0500314 struct usb_phy_generic *nop;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530315 int err;
Felipe Balbic84d3642012-07-19 13:38:06 +0300316
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200317 nop = devm_kzalloc(dev, sizeof(*nop), GFP_KERNEL);
318 if (!nop)
319 return -ENOMEM;
Roger Quadros2319fb82013-03-12 13:24:21 +0200320
Felipe Balbiaf9f51c2013-10-24 09:45:29 -0500321 err = usb_phy_gen_create_phy(dev, nop, dev_get_platdata(&pdev->dev));
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200322 if (err)
323 return err;
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100324 if (nop->gpiod_vbus) {
325 err = devm_request_threaded_irq(&pdev->dev,
326 gpiod_to_irq(nop->gpiod_vbus),
327 NULL, nop_gpio_vbus_thread,
328 VBUS_IRQ_FLAGS, "vbus_detect",
329 nop);
330 if (err) {
331 dev_err(&pdev->dev, "can't request irq %i, err: %d\n",
332 gpiod_to_irq(nop->gpiod_vbus), err);
333 return err;
334 }
Robert Jarzmik9835a6e2016-07-08 22:09:06 +0200335 nop->phy.otg->state = gpiod_get_value(nop->gpiod_vbus) ?
336 OTG_STATE_B_PERIPHERAL : OTG_STATE_B_IDLE;
Robert Jarzmik7acc9972014-12-06 22:05:15 +0100337 }
Roger Quadros2319fb82013-03-12 13:24:21 +0200338
Sebastian Andrzej Siewior53b6fc22013-07-30 17:20:06 +0200339 nop->phy.init = usb_gen_phy_init;
340 nop->phy.shutdown = usb_gen_phy_shutdown;
Heikki Krogerus41adf102012-02-13 13:24:10 +0200341
Roger Quadros90f42322013-03-12 13:24:24 +0200342 err = usb_add_phy_dev(&nop->phy);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530343 if (err) {
344 dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
345 err);
Mark Brown4d175f32013-08-11 15:26:04 +0100346 return err;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530347 }
348
349 platform_set_drvdata(pdev, nop);
350
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530351 return 0;
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530352}
353
Felipe Balbi4525bee2014-04-16 15:20:44 -0500354static int usb_phy_generic_remove(struct platform_device *pdev)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530355{
Felipe Balbi4525bee2014-04-16 15:20:44 -0500356 struct usb_phy_generic *nop = platform_get_drvdata(pdev);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530357
Kishon Vijay Abraham I662dca52012-06-22 17:02:46 +0530358 usb_remove_phy(&nop->phy);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530359
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530360 return 0;
361}
362
Roger Quadros0eba3872013-03-12 13:24:25 +0200363static const struct of_device_id nop_xceiv_dt_ids[] = {
364 { .compatible = "usb-nop-xceiv" },
365 { }
366};
367
368MODULE_DEVICE_TABLE(of, nop_xceiv_dt_ids);
369
Felipe Balbi4525bee2014-04-16 15:20:44 -0500370static struct platform_driver usb_phy_generic_driver = {
371 .probe = usb_phy_generic_probe,
372 .remove = usb_phy_generic_remove,
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530373 .driver = {
Felipe Balbi4525bee2014-04-16 15:20:44 -0500374 .name = "usb_phy_generic",
Sachin Kamat5462b0d2013-05-21 17:17:22 +0530375 .of_match_table = nop_xceiv_dt_ids,
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530376 },
377};
378
Felipe Balbi4525bee2014-04-16 15:20:44 -0500379static int __init usb_phy_generic_init(void)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530380{
Felipe Balbi4525bee2014-04-16 15:20:44 -0500381 return platform_driver_register(&usb_phy_generic_driver);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530382}
Felipe Balbi4525bee2014-04-16 15:20:44 -0500383subsys_initcall(usb_phy_generic_init);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530384
Felipe Balbi4525bee2014-04-16 15:20:44 -0500385static void __exit usb_phy_generic_exit(void)
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530386{
Felipe Balbi4525bee2014-04-16 15:20:44 -0500387 platform_driver_unregister(&usb_phy_generic_driver);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530388}
Felipe Balbi4525bee2014-04-16 15:20:44 -0500389module_exit(usb_phy_generic_exit);
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530390
Felipe Balbi4525bee2014-04-16 15:20:44 -0500391MODULE_ALIAS("platform:usb_phy_generic");
Ajay Kumar Guptaf6d92a02009-02-06 17:32:35 +0530392MODULE_AUTHOR("Texas Instruments Inc");
393MODULE_DESCRIPTION("NOP USB Transceiver driver");
394MODULE_LICENSE("GPL");