Commit | Line | Data |
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c33fad0c HH |
1 | /* |
2 | * twl6030_usb - TWL6030 USB transceiver, talking to OMAP OTG driver. | |
3 | * | |
4 | * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * Author: Hema HK <hemahk@ti.com> | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/platform_device.h> | |
27 | #include <linux/io.h> | |
28 | #include <linux/usb/otg.h> | |
29 | #include <linux/i2c/twl.h> | |
30 | #include <linux/regulator/consumer.h> | |
31 | #include <linux/err.h> | |
32 | #include <linux/notifier.h> | |
33 | #include <linux/slab.h> | |
603ab524 | 34 | #include <linux/delay.h> |
c33fad0c HH |
35 | |
36 | /* usb register definitions */ | |
37 | #define USB_VENDOR_ID_LSB 0x00 | |
38 | #define USB_VENDOR_ID_MSB 0x01 | |
39 | #define USB_PRODUCT_ID_LSB 0x02 | |
40 | #define USB_PRODUCT_ID_MSB 0x03 | |
41 | #define USB_VBUS_CTRL_SET 0x04 | |
42 | #define USB_VBUS_CTRL_CLR 0x05 | |
43 | #define USB_ID_CTRL_SET 0x06 | |
44 | #define USB_ID_CTRL_CLR 0x07 | |
45 | #define USB_VBUS_INT_SRC 0x08 | |
46 | #define USB_VBUS_INT_LATCH_SET 0x09 | |
47 | #define USB_VBUS_INT_LATCH_CLR 0x0A | |
48 | #define USB_VBUS_INT_EN_LO_SET 0x0B | |
49 | #define USB_VBUS_INT_EN_LO_CLR 0x0C | |
50 | #define USB_VBUS_INT_EN_HI_SET 0x0D | |
51 | #define USB_VBUS_INT_EN_HI_CLR 0x0E | |
52 | #define USB_ID_INT_SRC 0x0F | |
53 | #define USB_ID_INT_LATCH_SET 0x10 | |
54 | #define USB_ID_INT_LATCH_CLR 0x11 | |
55 | ||
56 | #define USB_ID_INT_EN_LO_SET 0x12 | |
57 | #define USB_ID_INT_EN_LO_CLR 0x13 | |
58 | #define USB_ID_INT_EN_HI_SET 0x14 | |
59 | #define USB_ID_INT_EN_HI_CLR 0x15 | |
60 | #define USB_OTG_ADP_CTRL 0x16 | |
61 | #define USB_OTG_ADP_HIGH 0x17 | |
62 | #define USB_OTG_ADP_LOW 0x18 | |
63 | #define USB_OTG_ADP_RISE 0x19 | |
64 | #define USB_OTG_REVISION 0x1A | |
65 | ||
66 | /* to be moved to LDO */ | |
67 | #define TWL6030_MISC2 0xE5 | |
68 | #define TWL6030_CFG_LDO_PD2 0xF5 | |
69 | #define TWL6030_BACKUP_REG 0xFA | |
70 | ||
71 | #define STS_HW_CONDITIONS 0x21 | |
72 | ||
73 | /* In module TWL6030_MODULE_PM_MASTER */ | |
74 | #define STS_HW_CONDITIONS 0x21 | |
75 | #define STS_USB_ID BIT(2) | |
76 | ||
77 | /* In module TWL6030_MODULE_PM_RECEIVER */ | |
78 | #define VUSB_CFG_TRANS 0x71 | |
79 | #define VUSB_CFG_STATE 0x72 | |
80 | #define VUSB_CFG_VOLTAGE 0x73 | |
81 | ||
82 | /* in module TWL6030_MODULE_MAIN_CHARGE */ | |
83 | ||
84 | #define CHARGERUSB_CTRL1 0x8 | |
85 | ||
86 | #define CONTROLLER_STAT1 0x03 | |
87 | #define VBUS_DET BIT(2) | |
88 | ||
89 | struct twl6030_usb { | |
46b8f6b0 | 90 | struct usb_phy phy; |
c33fad0c HH |
91 | struct device *dev; |
92 | ||
93 | /* for vbus reporting with irqs disabled */ | |
94 | spinlock_t lock; | |
95 | ||
96 | struct regulator *usb3v3; | |
97 | ||
5bf54506 MS |
98 | /* used to set vbus, in atomic path */ |
99 | struct work_struct set_vbus_work; | |
100 | ||
c33fad0c HH |
101 | int irq1; |
102 | int irq2; | |
103 | u8 linkstat; | |
104 | u8 asleep; | |
105 | bool irq_enabled; | |
5bf54506 | 106 | bool vbus_enable; |
5ccee4ae | 107 | unsigned long features; |
c33fad0c HH |
108 | }; |
109 | ||
46b8f6b0 | 110 | #define phy_to_twl(x) container_of((x), struct twl6030_usb, phy) |
c33fad0c HH |
111 | |
112 | /*-------------------------------------------------------------------------*/ | |
113 | ||
114 | static inline int twl6030_writeb(struct twl6030_usb *twl, u8 module, | |
115 | u8 data, u8 address) | |
116 | { | |
117 | int ret = 0; | |
118 | ||
119 | ret = twl_i2c_write_u8(module, data, address); | |
120 | if (ret < 0) | |
121 | dev_err(twl->dev, | |
122 | "Write[0x%x] Error %d\n", address, ret); | |
123 | return ret; | |
124 | } | |
125 | ||
126 | static inline u8 twl6030_readb(struct twl6030_usb *twl, u8 module, u8 address) | |
127 | { | |
128 | u8 data, ret = 0; | |
129 | ||
130 | ret = twl_i2c_read_u8(module, &data, address); | |
131 | if (ret >= 0) | |
132 | ret = data; | |
133 | else | |
134 | dev_err(twl->dev, | |
135 | "readb[0x%x,0x%x] Error %d\n", | |
136 | module, address, ret); | |
137 | return ret; | |
138 | } | |
139 | ||
86753811 | 140 | static int twl6030_phy_init(struct usb_phy *x) |
c33fad0c | 141 | { |
c33fad0c HH |
142 | struct twl6030_usb *twl; |
143 | struct device *dev; | |
144 | struct twl4030_usb_data *pdata; | |
145 | ||
46b8f6b0 | 146 | twl = phy_to_twl(x); |
c33fad0c HH |
147 | dev = twl->dev; |
148 | pdata = dev->platform_data; | |
149 | ||
31e9992a | 150 | if (twl->linkstat == USB_EVENT_ID) |
c33fad0c HH |
151 | pdata->phy_power(twl->dev, 1, 1); |
152 | else | |
153 | pdata->phy_power(twl->dev, 0, 1); | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
86753811 | 158 | static void twl6030_phy_shutdown(struct usb_phy *x) |
c33fad0c HH |
159 | { |
160 | struct twl6030_usb *twl; | |
161 | struct device *dev; | |
162 | struct twl4030_usb_data *pdata; | |
163 | ||
46b8f6b0 | 164 | twl = phy_to_twl(x); |
c33fad0c HH |
165 | dev = twl->dev; |
166 | pdata = dev->platform_data; | |
167 | pdata->phy_power(twl->dev, 0, 0); | |
c33fad0c HH |
168 | } |
169 | ||
86753811 | 170 | static int twl6030_phy_suspend(struct usb_phy *x, int suspend) |
070b8ed9 | 171 | { |
46b8f6b0 | 172 | struct twl6030_usb *twl = phy_to_twl(x); |
070b8ed9 HH |
173 | struct device *dev = twl->dev; |
174 | struct twl4030_usb_data *pdata = dev->platform_data; | |
175 | ||
176 | pdata->phy_suspend(dev, suspend); | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
46b8f6b0 | 181 | static int twl6030_start_srp(struct usb_otg *otg) |
603ab524 | 182 | { |
46b8f6b0 | 183 | struct twl6030_usb *twl = phy_to_twl(otg->phy); |
603ab524 HH |
184 | |
185 | twl6030_writeb(twl, TWL_MODULE_USB, 0x24, USB_VBUS_CTRL_SET); | |
186 | twl6030_writeb(twl, TWL_MODULE_USB, 0x84, USB_VBUS_CTRL_SET); | |
187 | ||
188 | mdelay(100); | |
189 | twl6030_writeb(twl, TWL_MODULE_USB, 0xa0, USB_VBUS_CTRL_CLR); | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
c33fad0c HH |
194 | static int twl6030_usb_ldo_init(struct twl6030_usb *twl) |
195 | { | |
5ccee4ae GG |
196 | char *regulator_name; |
197 | ||
198 | if (twl->features & TWL6025_SUBCLASS) | |
199 | regulator_name = "ldousb"; | |
200 | else | |
201 | regulator_name = "vusb"; | |
c33fad0c HH |
202 | |
203 | /* Set to OTG_REV 1.3 and turn on the ID_WAKEUP_COMP */ | |
204 | twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_BACKUP_REG); | |
205 | ||
206 | /* Program CFG_LDO_PD2 register and set VUSB bit */ | |
207 | twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_CFG_LDO_PD2); | |
208 | ||
209 | /* Program MISC2 register and set bit VUSB_IN_VBAT */ | |
210 | twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x10, TWL6030_MISC2); | |
211 | ||
5ccee4ae | 212 | twl->usb3v3 = regulator_get(twl->dev, regulator_name); |
c33fad0c HH |
213 | if (IS_ERR(twl->usb3v3)) |
214 | return -ENODEV; | |
215 | ||
c33fad0c HH |
216 | /* Program the USB_VBUS_CTRL_SET and set VBUS_ACT_COMP bit */ |
217 | twl6030_writeb(twl, TWL_MODULE_USB, 0x4, USB_VBUS_CTRL_SET); | |
218 | ||
219 | /* | |
220 | * Program the USB_ID_CTRL_SET register to enable GND drive | |
221 | * and the ID comparators | |
222 | */ | |
223 | twl6030_writeb(twl, TWL_MODULE_USB, 0x14, USB_ID_CTRL_SET); | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
228 | static ssize_t twl6030_usb_vbus_show(struct device *dev, | |
229 | struct device_attribute *attr, char *buf) | |
230 | { | |
231 | struct twl6030_usb *twl = dev_get_drvdata(dev); | |
232 | unsigned long flags; | |
233 | int ret = -EINVAL; | |
234 | ||
235 | spin_lock_irqsave(&twl->lock, flags); | |
236 | ||
237 | switch (twl->linkstat) { | |
238 | case USB_EVENT_VBUS: | |
239 | ret = snprintf(buf, PAGE_SIZE, "vbus\n"); | |
240 | break; | |
241 | case USB_EVENT_ID: | |
242 | ret = snprintf(buf, PAGE_SIZE, "id\n"); | |
243 | break; | |
244 | case USB_EVENT_NONE: | |
245 | ret = snprintf(buf, PAGE_SIZE, "none\n"); | |
246 | break; | |
247 | default: | |
248 | ret = snprintf(buf, PAGE_SIZE, "UNKNOWN\n"); | |
249 | } | |
250 | spin_unlock_irqrestore(&twl->lock, flags); | |
251 | ||
252 | return ret; | |
253 | } | |
254 | static DEVICE_ATTR(vbus, 0444, twl6030_usb_vbus_show, NULL); | |
255 | ||
256 | static irqreturn_t twl6030_usb_irq(int irq, void *_twl) | |
257 | { | |
258 | struct twl6030_usb *twl = _twl; | |
46b8f6b0 | 259 | struct usb_otg *otg = twl->phy.otg; |
c33fad0c HH |
260 | int status; |
261 | u8 vbus_state, hw_state; | |
262 | ||
263 | hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); | |
264 | ||
265 | vbus_state = twl6030_readb(twl, TWL_MODULE_MAIN_CHARGE, | |
266 | CONTROLLER_STAT1); | |
267 | if (!(hw_state & STS_USB_ID)) { | |
268 | if (vbus_state & VBUS_DET) { | |
6dc2503b HH |
269 | regulator_enable(twl->usb3v3); |
270 | twl->asleep = 1; | |
c33fad0c | 271 | status = USB_EVENT_VBUS; |
46b8f6b0 HK |
272 | otg->default_a = false; |
273 | twl->phy.state = OTG_STATE_B_IDLE; | |
6dc2503b | 274 | twl->linkstat = status; |
46b8f6b0 HK |
275 | twl->phy.last_event = status; |
276 | atomic_notifier_call_chain(&twl->phy.notifier, | |
277 | status, otg->gadget); | |
c33fad0c HH |
278 | } else { |
279 | status = USB_EVENT_NONE; | |
c33fad0c | 280 | twl->linkstat = status; |
46b8f6b0 HK |
281 | twl->phy.last_event = status; |
282 | atomic_notifier_call_chain(&twl->phy.notifier, | |
283 | status, otg->gadget); | |
6dc2503b HH |
284 | if (twl->asleep) { |
285 | regulator_disable(twl->usb3v3); | |
286 | twl->asleep = 0; | |
287 | } | |
c33fad0c HH |
288 | } |
289 | } | |
290 | sysfs_notify(&twl->dev->kobj, NULL, "vbus"); | |
291 | ||
292 | return IRQ_HANDLED; | |
293 | } | |
294 | ||
295 | static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) | |
296 | { | |
297 | struct twl6030_usb *twl = _twl; | |
46b8f6b0 | 298 | struct usb_otg *otg = twl->phy.otg; |
c33fad0c HH |
299 | int status = USB_EVENT_NONE; |
300 | u8 hw_state; | |
301 | ||
302 | hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); | |
303 | ||
304 | if (hw_state & STS_USB_ID) { | |
305 | ||
6dc2503b HH |
306 | regulator_enable(twl->usb3v3); |
307 | twl->asleep = 1; | |
c33fad0c HH |
308 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, 0x1); |
309 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, | |
310 | 0x10); | |
311 | status = USB_EVENT_ID; | |
46b8f6b0 HK |
312 | otg->default_a = true; |
313 | twl->phy.state = OTG_STATE_A_IDLE; | |
31e9992a | 314 | twl->linkstat = status; |
46b8f6b0 HK |
315 | twl->phy.last_event = status; |
316 | atomic_notifier_call_chain(&twl->phy.notifier, status, | |
317 | otg->gadget); | |
c33fad0c HH |
318 | } else { |
319 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, | |
320 | 0x10); | |
321 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, | |
322 | 0x1); | |
323 | } | |
324 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_LATCH_CLR, status); | |
c33fad0c HH |
325 | |
326 | return IRQ_HANDLED; | |
327 | } | |
328 | ||
46b8f6b0 | 329 | static int twl6030_set_peripheral(struct usb_otg *otg, |
c33fad0c HH |
330 | struct usb_gadget *gadget) |
331 | { | |
46b8f6b0 | 332 | if (!otg) |
c33fad0c HH |
333 | return -ENODEV; |
334 | ||
46b8f6b0 | 335 | otg->gadget = gadget; |
c33fad0c | 336 | if (!gadget) |
46b8f6b0 | 337 | otg->phy->state = OTG_STATE_UNDEFINED; |
c33fad0c HH |
338 | |
339 | return 0; | |
340 | } | |
341 | ||
86753811 | 342 | static int twl6030_enable_irq(struct usb_phy *x) |
c33fad0c | 343 | { |
46b8f6b0 | 344 | struct twl6030_usb *twl = phy_to_twl(x); |
c33fad0c HH |
345 | |
346 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, 0x1); | |
347 | twl6030_interrupt_unmask(0x05, REG_INT_MSK_LINE_C); | |
348 | twl6030_interrupt_unmask(0x05, REG_INT_MSK_STS_C); | |
349 | ||
350 | twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK, | |
351 | REG_INT_MSK_LINE_C); | |
352 | twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK, | |
353 | REG_INT_MSK_STS_C); | |
354 | twl6030_usb_irq(twl->irq2, twl); | |
355 | twl6030_usbotg_irq(twl->irq1, twl); | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
5bf54506 | 360 | static void otg_set_vbus_work(struct work_struct *data) |
c33fad0c | 361 | { |
5bf54506 MS |
362 | struct twl6030_usb *twl = container_of(data, struct twl6030_usb, |
363 | set_vbus_work); | |
c33fad0c HH |
364 | |
365 | /* | |
366 | * Start driving VBUS. Set OPA_MODE bit in CHARGERUSB_CTRL1 | |
367 | * register. This enables boost mode. | |
368 | */ | |
5bf54506 MS |
369 | |
370 | if (twl->vbus_enable) | |
c33fad0c | 371 | twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x40, |
5bf54506 MS |
372 | CHARGERUSB_CTRL1); |
373 | else | |
c33fad0c | 374 | twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x00, |
5bf54506 MS |
375 | CHARGERUSB_CTRL1); |
376 | } | |
377 | ||
46b8f6b0 | 378 | static int twl6030_set_vbus(struct usb_otg *otg, bool enabled) |
5bf54506 | 379 | { |
46b8f6b0 | 380 | struct twl6030_usb *twl = phy_to_twl(otg->phy); |
5bf54506 MS |
381 | |
382 | twl->vbus_enable = enabled; | |
383 | schedule_work(&twl->set_vbus_work); | |
384 | ||
c33fad0c HH |
385 | return 0; |
386 | } | |
387 | ||
46b8f6b0 | 388 | static int twl6030_set_host(struct usb_otg *otg, struct usb_bus *host) |
c33fad0c | 389 | { |
46b8f6b0 | 390 | if (!otg) |
c33fad0c HH |
391 | return -ENODEV; |
392 | ||
46b8f6b0 | 393 | otg->host = host; |
c33fad0c | 394 | if (!host) |
46b8f6b0 | 395 | otg->phy->state = OTG_STATE_UNDEFINED; |
c33fad0c HH |
396 | return 0; |
397 | } | |
398 | ||
399 | static int __devinit twl6030_usb_probe(struct platform_device *pdev) | |
400 | { | |
401 | struct twl6030_usb *twl; | |
402 | int status, err; | |
403 | struct twl4030_usb_data *pdata; | |
46b8f6b0 | 404 | struct usb_otg *otg; |
c33fad0c HH |
405 | struct device *dev = &pdev->dev; |
406 | pdata = dev->platform_data; | |
407 | ||
408 | twl = kzalloc(sizeof *twl, GFP_KERNEL); | |
409 | if (!twl) | |
410 | return -ENOMEM; | |
411 | ||
46b8f6b0 HK |
412 | otg = kzalloc(sizeof *otg, GFP_KERNEL); |
413 | if (!otg) { | |
414 | kfree(twl); | |
415 | return -ENOMEM; | |
416 | } | |
417 | ||
c33fad0c HH |
418 | twl->dev = &pdev->dev; |
419 | twl->irq1 = platform_get_irq(pdev, 0); | |
420 | twl->irq2 = platform_get_irq(pdev, 1); | |
5ccee4ae | 421 | twl->features = pdata->features; |
46b8f6b0 HK |
422 | |
423 | twl->phy.dev = twl->dev; | |
424 | twl->phy.label = "twl6030"; | |
425 | twl->phy.otg = otg; | |
426 | twl->phy.init = twl6030_phy_init; | |
427 | twl->phy.shutdown = twl6030_phy_shutdown; | |
428 | twl->phy.set_suspend = twl6030_phy_suspend; | |
429 | ||
430 | otg->phy = &twl->phy; | |
431 | otg->set_host = twl6030_set_host; | |
432 | otg->set_peripheral = twl6030_set_peripheral; | |
433 | otg->set_vbus = twl6030_set_vbus; | |
434 | otg->start_srp = twl6030_start_srp; | |
c33fad0c HH |
435 | |
436 | /* init spinlock for workqueue */ | |
437 | spin_lock_init(&twl->lock); | |
438 | ||
439 | err = twl6030_usb_ldo_init(twl); | |
440 | if (err) { | |
441 | dev_err(&pdev->dev, "ldo init failed\n"); | |
46b8f6b0 | 442 | kfree(otg); |
c33fad0c HH |
443 | kfree(twl); |
444 | return err; | |
445 | } | |
46b8f6b0 | 446 | usb_set_transceiver(&twl->phy); |
c33fad0c HH |
447 | |
448 | platform_set_drvdata(pdev, twl); | |
449 | if (device_create_file(&pdev->dev, &dev_attr_vbus)) | |
450 | dev_warn(&pdev->dev, "could not create sysfs file\n"); | |
451 | ||
46b8f6b0 | 452 | ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier); |
c33fad0c | 453 | |
5bf54506 MS |
454 | INIT_WORK(&twl->set_vbus_work, otg_set_vbus_work); |
455 | ||
c33fad0c HH |
456 | twl->irq_enabled = true; |
457 | status = request_threaded_irq(twl->irq1, NULL, twl6030_usbotg_irq, | |
458 | IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, | |
459 | "twl6030_usb", twl); | |
460 | if (status < 0) { | |
461 | dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", | |
462 | twl->irq1, status); | |
463 | device_remove_file(twl->dev, &dev_attr_vbus); | |
46b8f6b0 | 464 | kfree(otg); |
c33fad0c HH |
465 | kfree(twl); |
466 | return status; | |
467 | } | |
468 | ||
469 | status = request_threaded_irq(twl->irq2, NULL, twl6030_usb_irq, | |
470 | IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, | |
471 | "twl6030_usb", twl); | |
472 | if (status < 0) { | |
473 | dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", | |
474 | twl->irq2, status); | |
475 | free_irq(twl->irq1, twl); | |
476 | device_remove_file(twl->dev, &dev_attr_vbus); | |
46b8f6b0 | 477 | kfree(otg); |
c33fad0c HH |
478 | kfree(twl); |
479 | return status; | |
480 | } | |
481 | ||
6dc2503b | 482 | twl->asleep = 0; |
c33fad0c | 483 | pdata->phy_init(dev); |
46b8f6b0 HK |
484 | twl6030_phy_suspend(&twl->phy, 0); |
485 | twl6030_enable_irq(&twl->phy); | |
c33fad0c HH |
486 | dev_info(&pdev->dev, "Initialized TWL6030 USB module\n"); |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | static int __exit twl6030_usb_remove(struct platform_device *pdev) | |
492 | { | |
493 | struct twl6030_usb *twl = platform_get_drvdata(pdev); | |
494 | ||
495 | struct twl4030_usb_data *pdata; | |
496 | struct device *dev = &pdev->dev; | |
497 | pdata = dev->platform_data; | |
498 | ||
499 | twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, | |
500 | REG_INT_MSK_LINE_C); | |
501 | twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, | |
502 | REG_INT_MSK_STS_C); | |
503 | free_irq(twl->irq1, twl); | |
504 | free_irq(twl->irq2, twl); | |
505 | regulator_put(twl->usb3v3); | |
506 | pdata->phy_exit(twl->dev); | |
507 | device_remove_file(twl->dev, &dev_attr_vbus); | |
5bf54506 | 508 | cancel_work_sync(&twl->set_vbus_work); |
46b8f6b0 | 509 | kfree(twl->phy.otg); |
c33fad0c HH |
510 | kfree(twl); |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | static struct platform_driver twl6030_usb_driver = { | |
516 | .probe = twl6030_usb_probe, | |
517 | .remove = __exit_p(twl6030_usb_remove), | |
518 | .driver = { | |
519 | .name = "twl6030_usb", | |
520 | .owner = THIS_MODULE, | |
521 | }, | |
522 | }; | |
523 | ||
524 | static int __init twl6030_usb_init(void) | |
525 | { | |
526 | return platform_driver_register(&twl6030_usb_driver); | |
527 | } | |
528 | subsys_initcall(twl6030_usb_init); | |
529 | ||
530 | static void __exit twl6030_usb_exit(void) | |
531 | { | |
532 | platform_driver_unregister(&twl6030_usb_driver); | |
533 | } | |
534 | module_exit(twl6030_usb_exit); | |
535 | ||
536 | MODULE_ALIAS("platform:twl6030_usb"); | |
537 | MODULE_AUTHOR("Hema HK <hemahk@ti.com>"); | |
538 | MODULE_DESCRIPTION("TWL6030 USB transceiver driver"); | |
539 | MODULE_LICENSE("GPL"); |