Commit | Line | Data |
---|---|---|
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> | |
c9721438 | 29 | #include <linux/usb/musb-omap.h> |
c33fad0c HH |
30 | #include <linux/i2c/twl.h> |
31 | #include <linux/regulator/consumer.h> | |
32 | #include <linux/err.h> | |
c33fad0c | 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; | |
c9721438 | 103 | enum omap_musb_vbus_id_status linkstat; |
c33fad0c HH |
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 | ||
c9721438 | 150 | if (twl->linkstat == OMAP_MUSB_ID_GROUND) |
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) { | |
c9721438 | 238 | case OMAP_MUSB_VBUS_VALID: |
c33fad0c HH |
239 | ret = snprintf(buf, PAGE_SIZE, "vbus\n"); |
240 | break; | |
c9721438 | 241 | case OMAP_MUSB_ID_GROUND: |
c33fad0c HH |
242 | ret = snprintf(buf, PAGE_SIZE, "id\n"); |
243 | break; | |
c9721438 | 244 | case OMAP_MUSB_VBUS_OFF: |
c33fad0c HH |
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; | |
c9721438 | 259 | enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; |
c33fad0c HH |
260 | u8 vbus_state, hw_state; |
261 | ||
262 | hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); | |
263 | ||
264 | vbus_state = twl6030_readb(twl, TWL_MODULE_MAIN_CHARGE, | |
265 | CONTROLLER_STAT1); | |
266 | if (!(hw_state & STS_USB_ID)) { | |
267 | if (vbus_state & VBUS_DET) { | |
6dc2503b HH |
268 | regulator_enable(twl->usb3v3); |
269 | twl->asleep = 1; | |
c9721438 | 270 | status = OMAP_MUSB_VBUS_VALID; |
6dc2503b | 271 | twl->linkstat = status; |
c9721438 | 272 | omap_musb_mailbox(status); |
c33fad0c | 273 | } else { |
c9721438 KVA |
274 | if (twl->linkstat != OMAP_MUSB_UNKNOWN) { |
275 | status = OMAP_MUSB_VBUS_OFF; | |
276 | twl->linkstat = status; | |
277 | omap_musb_mailbox(status); | |
278 | if (twl->asleep) { | |
279 | regulator_disable(twl->usb3v3); | |
280 | twl->asleep = 0; | |
281 | } | |
6dc2503b | 282 | } |
c33fad0c HH |
283 | } |
284 | } | |
285 | sysfs_notify(&twl->dev->kobj, NULL, "vbus"); | |
286 | ||
287 | return IRQ_HANDLED; | |
288 | } | |
289 | ||
290 | static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) | |
291 | { | |
292 | struct twl6030_usb *twl = _twl; | |
c9721438 | 293 | enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; |
c33fad0c HH |
294 | u8 hw_state; |
295 | ||
296 | hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); | |
297 | ||
298 | if (hw_state & STS_USB_ID) { | |
299 | ||
6dc2503b HH |
300 | regulator_enable(twl->usb3v3); |
301 | twl->asleep = 1; | |
c33fad0c HH |
302 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, 0x1); |
303 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, | |
304 | 0x10); | |
c9721438 | 305 | status = OMAP_MUSB_ID_GROUND; |
31e9992a | 306 | twl->linkstat = status; |
c9721438 | 307 | omap_musb_mailbox(status); |
c33fad0c HH |
308 | } else { |
309 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, | |
310 | 0x10); | |
311 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, | |
312 | 0x1); | |
313 | } | |
314 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_LATCH_CLR, status); | |
c33fad0c HH |
315 | |
316 | return IRQ_HANDLED; | |
317 | } | |
318 | ||
46b8f6b0 | 319 | static int twl6030_set_peripheral(struct usb_otg *otg, |
c33fad0c HH |
320 | struct usb_gadget *gadget) |
321 | { | |
46b8f6b0 | 322 | if (!otg) |
c33fad0c HH |
323 | return -ENODEV; |
324 | ||
46b8f6b0 | 325 | otg->gadget = gadget; |
c33fad0c | 326 | if (!gadget) |
46b8f6b0 | 327 | otg->phy->state = OTG_STATE_UNDEFINED; |
c33fad0c HH |
328 | |
329 | return 0; | |
330 | } | |
331 | ||
86753811 | 332 | static int twl6030_enable_irq(struct usb_phy *x) |
c33fad0c | 333 | { |
46b8f6b0 | 334 | struct twl6030_usb *twl = phy_to_twl(x); |
c33fad0c HH |
335 | |
336 | twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, 0x1); | |
337 | twl6030_interrupt_unmask(0x05, REG_INT_MSK_LINE_C); | |
338 | twl6030_interrupt_unmask(0x05, REG_INT_MSK_STS_C); | |
339 | ||
340 | twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK, | |
341 | REG_INT_MSK_LINE_C); | |
342 | twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK, | |
343 | REG_INT_MSK_STS_C); | |
344 | twl6030_usb_irq(twl->irq2, twl); | |
345 | twl6030_usbotg_irq(twl->irq1, twl); | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
5bf54506 | 350 | static void otg_set_vbus_work(struct work_struct *data) |
c33fad0c | 351 | { |
5bf54506 MS |
352 | struct twl6030_usb *twl = container_of(data, struct twl6030_usb, |
353 | set_vbus_work); | |
c33fad0c HH |
354 | |
355 | /* | |
356 | * Start driving VBUS. Set OPA_MODE bit in CHARGERUSB_CTRL1 | |
357 | * register. This enables boost mode. | |
358 | */ | |
5bf54506 MS |
359 | |
360 | if (twl->vbus_enable) | |
c33fad0c | 361 | twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x40, |
5bf54506 MS |
362 | CHARGERUSB_CTRL1); |
363 | else | |
c33fad0c | 364 | twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x00, |
5bf54506 MS |
365 | CHARGERUSB_CTRL1); |
366 | } | |
367 | ||
46b8f6b0 | 368 | static int twl6030_set_vbus(struct usb_otg *otg, bool enabled) |
5bf54506 | 369 | { |
46b8f6b0 | 370 | struct twl6030_usb *twl = phy_to_twl(otg->phy); |
5bf54506 MS |
371 | |
372 | twl->vbus_enable = enabled; | |
373 | schedule_work(&twl->set_vbus_work); | |
374 | ||
c33fad0c HH |
375 | return 0; |
376 | } | |
377 | ||
46b8f6b0 | 378 | static int twl6030_set_host(struct usb_otg *otg, struct usb_bus *host) |
c33fad0c | 379 | { |
46b8f6b0 | 380 | if (!otg) |
c33fad0c HH |
381 | return -ENODEV; |
382 | ||
46b8f6b0 | 383 | otg->host = host; |
c33fad0c | 384 | if (!host) |
46b8f6b0 | 385 | otg->phy->state = OTG_STATE_UNDEFINED; |
c33fad0c HH |
386 | return 0; |
387 | } | |
388 | ||
389 | static int __devinit twl6030_usb_probe(struct platform_device *pdev) | |
390 | { | |
391 | struct twl6030_usb *twl; | |
392 | int status, err; | |
393 | struct twl4030_usb_data *pdata; | |
46b8f6b0 | 394 | struct usb_otg *otg; |
c33fad0c HH |
395 | struct device *dev = &pdev->dev; |
396 | pdata = dev->platform_data; | |
397 | ||
398 | twl = kzalloc(sizeof *twl, GFP_KERNEL); | |
399 | if (!twl) | |
400 | return -ENOMEM; | |
401 | ||
46b8f6b0 HK |
402 | otg = kzalloc(sizeof *otg, GFP_KERNEL); |
403 | if (!otg) { | |
404 | kfree(twl); | |
405 | return -ENOMEM; | |
406 | } | |
407 | ||
c33fad0c HH |
408 | twl->dev = &pdev->dev; |
409 | twl->irq1 = platform_get_irq(pdev, 0); | |
410 | twl->irq2 = platform_get_irq(pdev, 1); | |
5ccee4ae | 411 | twl->features = pdata->features; |
c9721438 | 412 | twl->linkstat = OMAP_MUSB_UNKNOWN; |
46b8f6b0 HK |
413 | |
414 | twl->phy.dev = twl->dev; | |
415 | twl->phy.label = "twl6030"; | |
416 | twl->phy.otg = otg; | |
417 | twl->phy.init = twl6030_phy_init; | |
418 | twl->phy.shutdown = twl6030_phy_shutdown; | |
419 | twl->phy.set_suspend = twl6030_phy_suspend; | |
420 | ||
421 | otg->phy = &twl->phy; | |
422 | otg->set_host = twl6030_set_host; | |
423 | otg->set_peripheral = twl6030_set_peripheral; | |
424 | otg->set_vbus = twl6030_set_vbus; | |
425 | otg->start_srp = twl6030_start_srp; | |
c33fad0c HH |
426 | |
427 | /* init spinlock for workqueue */ | |
428 | spin_lock_init(&twl->lock); | |
429 | ||
430 | err = twl6030_usb_ldo_init(twl); | |
431 | if (err) { | |
432 | dev_err(&pdev->dev, "ldo init failed\n"); | |
46b8f6b0 | 433 | kfree(otg); |
c33fad0c HH |
434 | kfree(twl); |
435 | return err; | |
436 | } | |
662dca54 | 437 | usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); |
c33fad0c HH |
438 | |
439 | platform_set_drvdata(pdev, twl); | |
440 | if (device_create_file(&pdev->dev, &dev_attr_vbus)) | |
441 | dev_warn(&pdev->dev, "could not create sysfs file\n"); | |
442 | ||
5bf54506 MS |
443 | INIT_WORK(&twl->set_vbus_work, otg_set_vbus_work); |
444 | ||
c33fad0c HH |
445 | twl->irq_enabled = true; |
446 | status = request_threaded_irq(twl->irq1, NULL, twl6030_usbotg_irq, | |
8f9d973a | 447 | IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
c33fad0c HH |
448 | "twl6030_usb", twl); |
449 | if (status < 0) { | |
450 | dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", | |
451 | twl->irq1, status); | |
452 | device_remove_file(twl->dev, &dev_attr_vbus); | |
46b8f6b0 | 453 | kfree(otg); |
c33fad0c HH |
454 | kfree(twl); |
455 | return status; | |
456 | } | |
457 | ||
458 | status = request_threaded_irq(twl->irq2, NULL, twl6030_usb_irq, | |
8f9d973a | 459 | IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
c33fad0c HH |
460 | "twl6030_usb", twl); |
461 | if (status < 0) { | |
462 | dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", | |
463 | twl->irq2, status); | |
464 | free_irq(twl->irq1, twl); | |
465 | device_remove_file(twl->dev, &dev_attr_vbus); | |
46b8f6b0 | 466 | kfree(otg); |
c33fad0c HH |
467 | kfree(twl); |
468 | return status; | |
469 | } | |
470 | ||
6dc2503b | 471 | twl->asleep = 0; |
c33fad0c | 472 | pdata->phy_init(dev); |
46b8f6b0 HK |
473 | twl6030_phy_suspend(&twl->phy, 0); |
474 | twl6030_enable_irq(&twl->phy); | |
c33fad0c HH |
475 | dev_info(&pdev->dev, "Initialized TWL6030 USB module\n"); |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
480 | static int __exit twl6030_usb_remove(struct platform_device *pdev) | |
481 | { | |
482 | struct twl6030_usb *twl = platform_get_drvdata(pdev); | |
483 | ||
484 | struct twl4030_usb_data *pdata; | |
485 | struct device *dev = &pdev->dev; | |
486 | pdata = dev->platform_data; | |
487 | ||
488 | twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, | |
489 | REG_INT_MSK_LINE_C); | |
490 | twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, | |
491 | REG_INT_MSK_STS_C); | |
492 | free_irq(twl->irq1, twl); | |
493 | free_irq(twl->irq2, twl); | |
494 | regulator_put(twl->usb3v3); | |
495 | pdata->phy_exit(twl->dev); | |
496 | device_remove_file(twl->dev, &dev_attr_vbus); | |
5bf54506 | 497 | cancel_work_sync(&twl->set_vbus_work); |
46b8f6b0 | 498 | kfree(twl->phy.otg); |
c33fad0c HH |
499 | kfree(twl); |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | static struct platform_driver twl6030_usb_driver = { | |
505 | .probe = twl6030_usb_probe, | |
506 | .remove = __exit_p(twl6030_usb_remove), | |
507 | .driver = { | |
508 | .name = "twl6030_usb", | |
509 | .owner = THIS_MODULE, | |
510 | }, | |
511 | }; | |
512 | ||
513 | static int __init twl6030_usb_init(void) | |
514 | { | |
515 | return platform_driver_register(&twl6030_usb_driver); | |
516 | } | |
517 | subsys_initcall(twl6030_usb_init); | |
518 | ||
519 | static void __exit twl6030_usb_exit(void) | |
520 | { | |
521 | platform_driver_unregister(&twl6030_usb_driver); | |
522 | } | |
523 | module_exit(twl6030_usb_exit); | |
524 | ||
525 | MODULE_ALIAS("platform:twl6030_usb"); | |
526 | MODULE_AUTHOR("Hema HK <hemahk@ti.com>"); | |
527 | MODULE_DESCRIPTION("TWL6030 USB transceiver driver"); | |
528 | MODULE_LICENSE("GPL"); |