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1 | /** |
2 | * omap-usb-tll.c - The USB TLL driver for OMAP EHCI & OHCI | |
3 | * | |
4 | * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com | |
5 | * Author: Keshava Munegowda <keshava_mgowda@ti.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 of | |
9 | * the License as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/spinlock.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <linux/clk.h> | |
26 | #include <linux/io.h> | |
27 | #include <linux/err.h> | |
16fa3dc7 | 28 | #include <linux/pm_runtime.h> |
e8c4a7ac | 29 | #include <linux/platform_data/usb-omap.h> |
16fa3dc7 KM |
30 | |
31 | #define USBTLL_DRIVER_NAME "usbhs_tll" | |
32 | ||
33 | /* TLL Register Set */ | |
34 | #define OMAP_USBTLL_REVISION (0x00) | |
35 | #define OMAP_USBTLL_SYSCONFIG (0x10) | |
36 | #define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8) | |
37 | #define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3) | |
38 | #define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2) | |
39 | #define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1) | |
40 | #define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0) | |
41 | ||
42 | #define OMAP_USBTLL_SYSSTATUS (0x14) | |
43 | #define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0) | |
44 | ||
45 | #define OMAP_USBTLL_IRQSTATUS (0x18) | |
46 | #define OMAP_USBTLL_IRQENABLE (0x1C) | |
47 | ||
48 | #define OMAP_TLL_SHARED_CONF (0x30) | |
49 | #define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6) | |
50 | #define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5) | |
51 | #define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2) | |
52 | #define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1) | |
53 | #define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0) | |
54 | ||
55 | #define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num) | |
56 | #define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24 | |
57 | #define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11) | |
58 | #define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10) | |
59 | #define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9) | |
60 | #define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8) | |
61 | #define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1) | |
62 | #define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0) | |
63 | ||
64 | #define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 0x0 | |
65 | #define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM 0x1 | |
66 | #define OMAP_TLL_FSLSMODE_3PIN_PHY 0x2 | |
67 | #define OMAP_TLL_FSLSMODE_4PIN_PHY 0x3 | |
68 | #define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 0x4 | |
69 | #define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM 0x5 | |
70 | #define OMAP_TLL_FSLSMODE_3PIN_TLL 0x6 | |
71 | #define OMAP_TLL_FSLSMODE_4PIN_TLL 0x7 | |
72 | #define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 0xA | |
73 | #define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM 0xB | |
74 | ||
75 | #define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num) | |
76 | #define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num) | |
77 | #define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num) | |
78 | #define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num) | |
79 | #define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num) | |
80 | #define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num) | |
81 | #define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num) | |
82 | #define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num) | |
83 | #define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num) | |
84 | ||
85 | #define OMAP_REV2_TLL_CHANNEL_COUNT 2 | |
86 | #define OMAP_TLL_CHANNEL_COUNT 3 | |
87 | #define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 0) | |
88 | #define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 1) | |
89 | #define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 2) | |
90 | ||
91 | /* Values of USBTLL_REVISION - Note: these are not given in the TRM */ | |
92 | #define OMAP_USBTLL_REV1 0x00000015 /* OMAP3 */ | |
93 | #define OMAP_USBTLL_REV2 0x00000018 /* OMAP 3630 */ | |
94 | #define OMAP_USBTLL_REV3 0x00000004 /* OMAP4 */ | |
95 | ||
96 | #define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL) | |
97 | ||
98 | struct usbtll_omap { | |
99 | struct clk *usbtll_p1_fck; | |
100 | struct clk *usbtll_p2_fck; | |
101 | struct usbtll_omap_platform_data platdata; | |
102 | /* secure the register updates */ | |
103 | spinlock_t lock; | |
104 | }; | |
105 | ||
106 | /*-------------------------------------------------------------------------*/ | |
107 | ||
108 | const char usbtll_driver_name[] = USBTLL_DRIVER_NAME; | |
109 | struct platform_device *tll_pdev; | |
110 | ||
111 | /*-------------------------------------------------------------------------*/ | |
112 | ||
113 | static inline void usbtll_write(void __iomem *base, u32 reg, u32 val) | |
114 | { | |
115 | __raw_writel(val, base + reg); | |
116 | } | |
117 | ||
118 | static inline u32 usbtll_read(void __iomem *base, u32 reg) | |
119 | { | |
120 | return __raw_readl(base + reg); | |
121 | } | |
122 | ||
123 | static inline void usbtll_writeb(void __iomem *base, u8 reg, u8 val) | |
124 | { | |
125 | __raw_writeb(val, base + reg); | |
126 | } | |
127 | ||
128 | static inline u8 usbtll_readb(void __iomem *base, u8 reg) | |
129 | { | |
130 | return __raw_readb(base + reg); | |
131 | } | |
132 | ||
133 | /*-------------------------------------------------------------------------*/ | |
134 | ||
135 | static bool is_ohci_port(enum usbhs_omap_port_mode pmode) | |
136 | { | |
137 | switch (pmode) { | |
138 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: | |
139 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: | |
140 | case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: | |
141 | case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: | |
142 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: | |
143 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: | |
144 | case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: | |
145 | case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: | |
146 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: | |
147 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: | |
148 | return true; | |
149 | ||
150 | default: | |
151 | return false; | |
152 | } | |
153 | } | |
154 | ||
155 | /* | |
156 | * convert the port-mode enum to a value we can use in the FSLSMODE | |
157 | * field of USBTLL_CHANNEL_CONF | |
158 | */ | |
159 | static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode) | |
160 | { | |
161 | switch (mode) { | |
162 | case OMAP_USBHS_PORT_MODE_UNUSED: | |
163 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: | |
164 | return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0; | |
165 | ||
166 | case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: | |
167 | return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM; | |
168 | ||
169 | case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: | |
170 | return OMAP_TLL_FSLSMODE_3PIN_PHY; | |
171 | ||
172 | case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: | |
173 | return OMAP_TLL_FSLSMODE_4PIN_PHY; | |
174 | ||
175 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: | |
176 | return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0; | |
177 | ||
178 | case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: | |
179 | return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM; | |
180 | ||
181 | case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: | |
182 | return OMAP_TLL_FSLSMODE_3PIN_TLL; | |
183 | ||
184 | case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: | |
185 | return OMAP_TLL_FSLSMODE_4PIN_TLL; | |
186 | ||
187 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: | |
188 | return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0; | |
189 | ||
190 | case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: | |
191 | return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM; | |
192 | default: | |
193 | pr_warn("Invalid port mode, using default\n"); | |
194 | return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0; | |
195 | } | |
196 | } | |
197 | ||
198 | /** | |
199 | * usbtll_omap_probe - initialize TI-based HCDs | |
200 | * | |
201 | * Allocates basic resources for this USB host controller. | |
202 | */ | |
f791be49 | 203 | static int usbtll_omap_probe(struct platform_device *pdev) |
16fa3dc7 KM |
204 | { |
205 | struct device *dev = &pdev->dev; | |
206 | struct usbtll_omap_platform_data *pdata = dev->platform_data; | |
207 | void __iomem *base; | |
208 | struct resource *res; | |
209 | struct usbtll_omap *tll; | |
210 | unsigned reg; | |
211 | unsigned long flags; | |
212 | int ret = 0; | |
213 | int i, ver, count; | |
214 | ||
215 | dev_dbg(dev, "starting TI HSUSB TLL Controller\n"); | |
216 | ||
217 | tll = kzalloc(sizeof(struct usbtll_omap), GFP_KERNEL); | |
218 | if (!tll) { | |
219 | dev_err(dev, "Memory allocation failed\n"); | |
220 | ret = -ENOMEM; | |
221 | goto end; | |
222 | } | |
223 | ||
224 | spin_lock_init(&tll->lock); | |
225 | ||
226 | for (i = 0; i < OMAP3_HS_USB_PORTS; i++) | |
227 | tll->platdata.port_mode[i] = pdata->port_mode[i]; | |
228 | ||
229 | tll->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk"); | |
230 | if (IS_ERR(tll->usbtll_p1_fck)) { | |
231 | ret = PTR_ERR(tll->usbtll_p1_fck); | |
232 | dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret); | |
233 | goto err_tll; | |
234 | } | |
235 | ||
236 | tll->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk"); | |
237 | if (IS_ERR(tll->usbtll_p2_fck)) { | |
238 | ret = PTR_ERR(tll->usbtll_p2_fck); | |
239 | dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret); | |
240 | goto err_usbtll_p1_fck; | |
241 | } | |
242 | ||
243 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
244 | if (!res) { | |
245 | dev_err(dev, "usb tll get resource failed\n"); | |
246 | ret = -ENODEV; | |
247 | goto err_usbtll_p2_fck; | |
248 | } | |
249 | ||
250 | base = ioremap(res->start, resource_size(res)); | |
251 | if (!base) { | |
252 | dev_err(dev, "TLL ioremap failed\n"); | |
253 | ret = -ENOMEM; | |
254 | goto err_usbtll_p2_fck; | |
255 | } | |
256 | ||
257 | platform_set_drvdata(pdev, tll); | |
258 | pm_runtime_enable(dev); | |
259 | pm_runtime_get_sync(dev); | |
260 | ||
261 | spin_lock_irqsave(&tll->lock, flags); | |
262 | ||
263 | ver = usbtll_read(base, OMAP_USBTLL_REVISION); | |
264 | switch (ver) { | |
265 | case OMAP_USBTLL_REV1: | |
266 | case OMAP_USBTLL_REV2: | |
267 | count = OMAP_TLL_CHANNEL_COUNT; | |
268 | break; | |
269 | case OMAP_USBTLL_REV3: | |
270 | count = OMAP_REV2_TLL_CHANNEL_COUNT; | |
271 | break; | |
272 | default: | |
273 | dev_err(dev, "TLL version failed\n"); | |
274 | ret = -ENODEV; | |
275 | goto err_ioremap; | |
276 | } | |
277 | ||
278 | if (is_ehci_tll_mode(pdata->port_mode[0]) || | |
279 | is_ehci_tll_mode(pdata->port_mode[1]) || | |
280 | is_ehci_tll_mode(pdata->port_mode[2]) || | |
281 | is_ohci_port(pdata->port_mode[0]) || | |
282 | is_ohci_port(pdata->port_mode[1]) || | |
283 | is_ohci_port(pdata->port_mode[2])) { | |
284 | ||
285 | /* Program Common TLL register */ | |
286 | reg = usbtll_read(base, OMAP_TLL_SHARED_CONF); | |
287 | reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON | |
288 | | OMAP_TLL_SHARED_CONF_USB_DIVRATION); | |
289 | reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN; | |
290 | reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN; | |
291 | ||
292 | usbtll_write(base, OMAP_TLL_SHARED_CONF, reg); | |
293 | ||
294 | /* Enable channels now */ | |
295 | for (i = 0; i < count; i++) { | |
296 | reg = usbtll_read(base, OMAP_TLL_CHANNEL_CONF(i)); | |
297 | ||
298 | if (is_ohci_port(pdata->port_mode[i])) { | |
299 | reg |= ohci_omap3_fslsmode(pdata->port_mode[i]) | |
300 | << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT; | |
301 | reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS; | |
302 | } else if (pdata->port_mode[i] == | |
303 | OMAP_EHCI_PORT_MODE_TLL) { | |
304 | /* | |
305 | * Disable AutoIdle, BitStuffing | |
306 | * and use SDR Mode | |
307 | */ | |
308 | reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE | |
309 | | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF | |
310 | | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE); | |
311 | } else { | |
312 | continue; | |
313 | } | |
314 | reg |= OMAP_TLL_CHANNEL_CONF_CHANEN; | |
315 | usbtll_write(base, OMAP_TLL_CHANNEL_CONF(i), reg); | |
316 | ||
317 | usbtll_writeb(base, | |
318 | OMAP_TLL_ULPI_SCRATCH_REGISTER(i), | |
319 | 0xbe); | |
320 | } | |
321 | } | |
322 | ||
323 | err_ioremap: | |
324 | spin_unlock_irqrestore(&tll->lock, flags); | |
325 | iounmap(base); | |
326 | pm_runtime_put_sync(dev); | |
327 | tll_pdev = pdev; | |
328 | if (!ret) | |
329 | goto end; | |
330 | pm_runtime_disable(dev); | |
331 | ||
332 | err_usbtll_p2_fck: | |
333 | clk_put(tll->usbtll_p2_fck); | |
334 | ||
335 | err_usbtll_p1_fck: | |
336 | clk_put(tll->usbtll_p1_fck); | |
337 | ||
338 | err_tll: | |
339 | kfree(tll); | |
340 | ||
341 | end: | |
342 | return ret; | |
343 | } | |
344 | ||
345 | /** | |
346 | * usbtll_omap_remove - shutdown processing for UHH & TLL HCDs | |
347 | * @pdev: USB Host Controller being removed | |
348 | * | |
349 | * Reverses the effect of usbtll_omap_probe(). | |
350 | */ | |
4740f73f | 351 | static int usbtll_omap_remove(struct platform_device *pdev) |
16fa3dc7 KM |
352 | { |
353 | struct usbtll_omap *tll = platform_get_drvdata(pdev); | |
354 | ||
355 | clk_put(tll->usbtll_p2_fck); | |
356 | clk_put(tll->usbtll_p1_fck); | |
357 | pm_runtime_disable(&pdev->dev); | |
358 | kfree(tll); | |
359 | return 0; | |
360 | } | |
361 | ||
362 | static int usbtll_runtime_resume(struct device *dev) | |
363 | { | |
364 | struct usbtll_omap *tll = dev_get_drvdata(dev); | |
365 | struct usbtll_omap_platform_data *pdata = &tll->platdata; | |
366 | unsigned long flags; | |
367 | ||
368 | dev_dbg(dev, "usbtll_runtime_resume\n"); | |
369 | ||
370 | if (!pdata) { | |
371 | dev_dbg(dev, "missing platform_data\n"); | |
372 | return -ENODEV; | |
373 | } | |
374 | ||
375 | spin_lock_irqsave(&tll->lock, flags); | |
376 | ||
377 | if (is_ehci_tll_mode(pdata->port_mode[0])) | |
378 | clk_enable(tll->usbtll_p1_fck); | |
379 | ||
380 | if (is_ehci_tll_mode(pdata->port_mode[1])) | |
381 | clk_enable(tll->usbtll_p2_fck); | |
382 | ||
383 | spin_unlock_irqrestore(&tll->lock, flags); | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static int usbtll_runtime_suspend(struct device *dev) | |
389 | { | |
390 | struct usbtll_omap *tll = dev_get_drvdata(dev); | |
391 | struct usbtll_omap_platform_data *pdata = &tll->platdata; | |
392 | unsigned long flags; | |
393 | ||
394 | dev_dbg(dev, "usbtll_runtime_suspend\n"); | |
395 | ||
396 | if (!pdata) { | |
397 | dev_dbg(dev, "missing platform_data\n"); | |
398 | return -ENODEV; | |
399 | } | |
400 | ||
401 | spin_lock_irqsave(&tll->lock, flags); | |
402 | ||
403 | if (is_ehci_tll_mode(pdata->port_mode[0])) | |
404 | clk_disable(tll->usbtll_p1_fck); | |
405 | ||
406 | if (is_ehci_tll_mode(pdata->port_mode[1])) | |
407 | clk_disable(tll->usbtll_p2_fck); | |
408 | ||
409 | spin_unlock_irqrestore(&tll->lock, flags); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | static const struct dev_pm_ops usbtllomap_dev_pm_ops = { | |
415 | SET_RUNTIME_PM_OPS(usbtll_runtime_suspend, | |
416 | usbtll_runtime_resume, | |
417 | NULL) | |
418 | }; | |
419 | ||
420 | static struct platform_driver usbtll_omap_driver = { | |
421 | .driver = { | |
422 | .name = (char *)usbtll_driver_name, | |
423 | .owner = THIS_MODULE, | |
424 | .pm = &usbtllomap_dev_pm_ops, | |
425 | }, | |
426 | .probe = usbtll_omap_probe, | |
84449216 | 427 | .remove = usbtll_omap_remove, |
16fa3dc7 KM |
428 | }; |
429 | ||
430 | int omap_tll_enable(void) | |
431 | { | |
432 | if (!tll_pdev) { | |
433 | pr_err("missing omap usbhs tll platform_data\n"); | |
434 | return -ENODEV; | |
435 | } | |
436 | return pm_runtime_get_sync(&tll_pdev->dev); | |
437 | } | |
438 | EXPORT_SYMBOL_GPL(omap_tll_enable); | |
439 | ||
440 | int omap_tll_disable(void) | |
441 | { | |
442 | if (!tll_pdev) { | |
443 | pr_err("missing omap usbhs tll platform_data\n"); | |
444 | return -ENODEV; | |
445 | } | |
446 | return pm_runtime_put_sync(&tll_pdev->dev); | |
447 | } | |
448 | EXPORT_SYMBOL_GPL(omap_tll_disable); | |
449 | ||
450 | MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>"); | |
451 | MODULE_ALIAS("platform:" USBHS_DRIVER_NAME); | |
452 | MODULE_LICENSE("GPL v2"); | |
453 | MODULE_DESCRIPTION("usb tll driver for TI OMAP EHCI and OHCI controllers"); | |
454 | ||
455 | static int __init omap_usbtll_drvinit(void) | |
456 | { | |
457 | return platform_driver_register(&usbtll_omap_driver); | |
458 | } | |
459 | ||
460 | /* | |
461 | * init before usbhs core driver; | |
462 | * The usbtll driver should be initialized before | |
463 | * the usbhs core driver probe function is called. | |
464 | */ | |
465 | fs_initcall(omap_usbtll_drvinit); | |
466 | ||
467 | static void __exit omap_usbtll_drvexit(void) | |
468 | { | |
469 | platform_driver_unregister(&usbtll_omap_driver); | |
470 | } | |
471 | module_exit(omap_usbtll_drvexit); |