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673a524b IY |
1 | /* |
2 | * Copyright (C) 2005-2007 by Texas Instruments | |
3 | * Some code has been taken from tusb6010.c | |
4 | * Copyrights for that are attributable to: | |
5 | * Copyright (C) 2006 Nokia Corporation | |
6 | * Tony Lindgren <tony@atomide.com> | |
7 | * | |
8 | * This file is part of the Inventra Controller Driver for Linux. | |
9 | * | |
10 | * The Inventra Controller Driver for Linux is free software; you | |
11 | * can redistribute it and/or modify it under the terms of the GNU | |
12 | * General Public License version 2 as published by the Free Software | |
13 | * Foundation. | |
14 | * | |
15 | * The Inventra Controller Driver for Linux is distributed in | |
16 | * the hope that it will be useful, but WITHOUT ANY WARRANTY; | |
17 | * without even the implied warranty of MERCHANTABILITY or | |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
19 | * License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with The Inventra Controller Driver for Linux ; if not, | |
23 | * write to the Free Software Foundation, Inc., 59 Temple Place, | |
24 | * Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | */ | |
673a524b IY |
27 | #ifndef __UBOOT__ |
28 | #include <linux/module.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/sched.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/list.h> | |
33 | #include <linux/io.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <linux/dma-mapping.h> | |
36 | #include <linux/pm_runtime.h> | |
37 | #include <linux/err.h> | |
38 | #include <linux/usb/musb-omap.h> | |
39 | #else | |
40 | #include <common.h> | |
41 | #include <asm/omap_musb.h> | |
42 | #include <twl4030.h> | |
43 | #include "linux-compat.h" | |
44 | #endif | |
45 | ||
46 | #include "musb_core.h" | |
47 | #include "omap2430.h" | |
48 | ||
49 | #ifndef __UBOOT__ | |
50 | struct omap2430_glue { | |
51 | struct device *dev; | |
52 | struct platform_device *musb; | |
53 | enum omap_musb_vbus_id_status status; | |
54 | struct work_struct omap_musb_mailbox_work; | |
55 | }; | |
56 | #define glue_to_musb(g) platform_get_drvdata(g->musb) | |
57 | ||
58 | struct omap2430_glue *_glue; | |
59 | ||
60 | static struct timer_list musb_idle_timer; | |
61 | ||
62 | static void musb_do_idle(unsigned long _musb) | |
63 | { | |
64 | struct musb *musb = (void *)_musb; | |
65 | unsigned long flags; | |
66 | u8 power; | |
67 | u8 devctl; | |
68 | ||
69 | spin_lock_irqsave(&musb->lock, flags); | |
70 | ||
71 | switch (musb->xceiv->state) { | |
72 | case OTG_STATE_A_WAIT_BCON: | |
73 | ||
74 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
75 | if (devctl & MUSB_DEVCTL_BDEVICE) { | |
76 | musb->xceiv->state = OTG_STATE_B_IDLE; | |
77 | MUSB_DEV_MODE(musb); | |
78 | } else { | |
79 | musb->xceiv->state = OTG_STATE_A_IDLE; | |
80 | MUSB_HST_MODE(musb); | |
81 | } | |
82 | break; | |
83 | case OTG_STATE_A_SUSPEND: | |
84 | /* finish RESUME signaling? */ | |
85 | if (musb->port1_status & MUSB_PORT_STAT_RESUME) { | |
86 | power = musb_readb(musb->mregs, MUSB_POWER); | |
87 | power &= ~MUSB_POWER_RESUME; | |
88 | dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power); | |
89 | musb_writeb(musb->mregs, MUSB_POWER, power); | |
90 | musb->is_active = 1; | |
91 | musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | |
92 | | MUSB_PORT_STAT_RESUME); | |
93 | musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; | |
94 | usb_hcd_poll_rh_status(musb_to_hcd(musb)); | |
95 | /* NOTE: it might really be A_WAIT_BCON ... */ | |
96 | musb->xceiv->state = OTG_STATE_A_HOST; | |
97 | } | |
98 | break; | |
99 | case OTG_STATE_A_HOST: | |
100 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
101 | if (devctl & MUSB_DEVCTL_BDEVICE) | |
102 | musb->xceiv->state = OTG_STATE_B_IDLE; | |
103 | else | |
104 | musb->xceiv->state = OTG_STATE_A_WAIT_BCON; | |
105 | default: | |
106 | break; | |
107 | } | |
108 | spin_unlock_irqrestore(&musb->lock, flags); | |
109 | } | |
110 | ||
111 | ||
112 | static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) | |
113 | { | |
114 | unsigned long default_timeout = jiffies + msecs_to_jiffies(3); | |
115 | static unsigned long last_timer; | |
116 | ||
117 | if (timeout == 0) | |
118 | timeout = default_timeout; | |
119 | ||
120 | /* Never idle if active, or when VBUS timeout is not set as host */ | |
121 | if (musb->is_active || ((musb->a_wait_bcon == 0) | |
122 | && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { | |
123 | dev_dbg(musb->controller, "%s active, deleting timer\n", | |
124 | otg_state_string(musb->xceiv->state)); | |
125 | del_timer(&musb_idle_timer); | |
126 | last_timer = jiffies; | |
127 | return; | |
128 | } | |
129 | ||
130 | if (time_after(last_timer, timeout)) { | |
131 | if (!timer_pending(&musb_idle_timer)) | |
132 | last_timer = timeout; | |
133 | else { | |
134 | dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); | |
135 | return; | |
136 | } | |
137 | } | |
138 | last_timer = timeout; | |
139 | ||
140 | dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", | |
141 | otg_state_string(musb->xceiv->state), | |
142 | (unsigned long)jiffies_to_msecs(timeout - jiffies)); | |
143 | mod_timer(&musb_idle_timer, timeout); | |
144 | } | |
145 | ||
146 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) | |
147 | { | |
148 | struct usb_otg *otg = musb->xceiv->otg; | |
149 | u8 devctl; | |
150 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); | |
151 | int ret = 1; | |
152 | /* HDRC controls CPEN, but beware current surges during device | |
153 | * connect. They can trigger transient overcurrent conditions | |
154 | * that must be ignored. | |
155 | */ | |
156 | ||
157 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
158 | ||
159 | if (is_on) { | |
160 | if (musb->xceiv->state == OTG_STATE_A_IDLE) { | |
161 | /* start the session */ | |
162 | devctl |= MUSB_DEVCTL_SESSION; | |
163 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
164 | /* | |
165 | * Wait for the musb to set as A device to enable the | |
166 | * VBUS | |
167 | */ | |
168 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { | |
169 | ||
170 | cpu_relax(); | |
171 | ||
172 | if (time_after(jiffies, timeout)) { | |
173 | dev_err(musb->controller, | |
174 | "configured as A device timeout"); | |
175 | ret = -EINVAL; | |
176 | break; | |
177 | } | |
178 | } | |
179 | ||
180 | if (ret && otg->set_vbus) | |
181 | otg_set_vbus(otg, 1); | |
182 | } else { | |
183 | musb->is_active = 1; | |
184 | otg->default_a = 1; | |
185 | musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; | |
186 | devctl |= MUSB_DEVCTL_SESSION; | |
187 | MUSB_HST_MODE(musb); | |
188 | } | |
189 | } else { | |
190 | musb->is_active = 0; | |
191 | ||
192 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and | |
193 | * jumping right to B_IDLE... | |
194 | */ | |
195 | ||
196 | otg->default_a = 0; | |
197 | musb->xceiv->state = OTG_STATE_B_IDLE; | |
198 | devctl &= ~MUSB_DEVCTL_SESSION; | |
199 | ||
200 | MUSB_DEV_MODE(musb); | |
201 | } | |
202 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
203 | ||
204 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " | |
205 | /* otg %3x conf %08x prcm %08x */ "\n", | |
206 | otg_state_string(musb->xceiv->state), | |
207 | musb_readb(musb->mregs, MUSB_DEVCTL)); | |
208 | } | |
209 | ||
210 | static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode) | |
211 | { | |
212 | u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
213 | ||
214 | devctl |= MUSB_DEVCTL_SESSION; | |
215 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | #endif | |
220 | ||
221 | static inline void omap2430_low_level_exit(struct musb *musb) | |
222 | { | |
223 | u32 l; | |
224 | ||
225 | /* in any role */ | |
226 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); | |
227 | l |= ENABLEFORCE; /* enable MSTANDBY */ | |
228 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
229 | } | |
230 | ||
231 | static inline void omap2430_low_level_init(struct musb *musb) | |
232 | { | |
233 | u32 l; | |
234 | ||
235 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); | |
236 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ | |
237 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
238 | } | |
239 | ||
240 | #ifndef __UBOOT__ | |
241 | void omap_musb_mailbox(enum omap_musb_vbus_id_status status) | |
242 | { | |
243 | struct omap2430_glue *glue = _glue; | |
244 | struct musb *musb = glue_to_musb(glue); | |
245 | ||
246 | glue->status = status; | |
247 | if (!musb) { | |
248 | dev_err(glue->dev, "musb core is not yet ready\n"); | |
249 | return; | |
250 | } | |
251 | ||
252 | schedule_work(&glue->omap_musb_mailbox_work); | |
253 | } | |
254 | EXPORT_SYMBOL_GPL(omap_musb_mailbox); | |
255 | ||
256 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) | |
257 | { | |
258 | struct musb *musb = glue_to_musb(glue); | |
259 | struct device *dev = musb->controller; | |
260 | struct musb_hdrc_platform_data *pdata = dev->platform_data; | |
261 | struct omap_musb_board_data *data = pdata->board_data; | |
262 | struct usb_otg *otg = musb->xceiv->otg; | |
263 | ||
264 | switch (glue->status) { | |
265 | case OMAP_MUSB_ID_GROUND: | |
266 | dev_dbg(dev, "ID GND\n"); | |
267 | ||
268 | otg->default_a = true; | |
269 | musb->xceiv->state = OTG_STATE_A_IDLE; | |
270 | musb->xceiv->last_event = USB_EVENT_ID; | |
271 | if (!is_otg_enabled(musb) || musb->gadget_driver) { | |
272 | pm_runtime_get_sync(dev); | |
273 | usb_phy_init(musb->xceiv); | |
274 | omap2430_musb_set_vbus(musb, 1); | |
275 | } | |
276 | break; | |
277 | ||
278 | case OMAP_MUSB_VBUS_VALID: | |
279 | dev_dbg(dev, "VBUS Connect\n"); | |
280 | ||
281 | otg->default_a = false; | |
282 | musb->xceiv->state = OTG_STATE_B_IDLE; | |
283 | musb->xceiv->last_event = USB_EVENT_VBUS; | |
284 | if (musb->gadget_driver) | |
285 | pm_runtime_get_sync(dev); | |
286 | usb_phy_init(musb->xceiv); | |
287 | break; | |
288 | ||
289 | case OMAP_MUSB_ID_FLOAT: | |
290 | case OMAP_MUSB_VBUS_OFF: | |
291 | dev_dbg(dev, "VBUS Disconnect\n"); | |
292 | ||
293 | musb->xceiv->last_event = USB_EVENT_NONE; | |
294 | if (is_otg_enabled(musb) || is_peripheral_enabled(musb)) | |
295 | if (musb->gadget_driver) { | |
296 | pm_runtime_mark_last_busy(dev); | |
297 | pm_runtime_put_autosuspend(dev); | |
298 | } | |
299 | ||
300 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
301 | if (musb->xceiv->otg->set_vbus) | |
302 | otg_set_vbus(musb->xceiv->otg, 0); | |
303 | } | |
304 | usb_phy_shutdown(musb->xceiv); | |
305 | break; | |
306 | default: | |
307 | dev_dbg(dev, "ID float\n"); | |
308 | } | |
309 | } | |
310 | ||
311 | ||
312 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) | |
313 | { | |
314 | struct omap2430_glue *glue = container_of(mailbox_work, | |
315 | struct omap2430_glue, omap_musb_mailbox_work); | |
316 | omap_musb_set_mailbox(glue); | |
317 | } | |
318 | #endif | |
319 | ||
320 | static int omap2430_musb_init(struct musb *musb) | |
321 | { | |
322 | u32 l; | |
323 | int status = 0; | |
324 | #ifndef __UBOOT__ | |
325 | struct device *dev = musb->controller; | |
326 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
327 | struct musb_hdrc_platform_data *plat = dev->platform_data; | |
328 | struct omap_musb_board_data *data = plat->board_data; | |
329 | #else | |
330 | struct omap_musb_board_data *data = | |
331 | (struct omap_musb_board_data *)musb->controller; | |
332 | #endif | |
333 | ||
334 | ||
335 | #ifndef __UBOOT__ | |
336 | /* We require some kind of external transceiver, hooked | |
337 | * up through ULPI. TWL4030-family PMICs include one, | |
338 | * which needs a driver, drivers aren't always needed. | |
339 | */ | |
340 | musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); | |
341 | if (IS_ERR_OR_NULL(musb->xceiv)) { | |
342 | pr_err("HS USB OTG: no transceiver configured\n"); | |
343 | return -ENODEV; | |
344 | } | |
345 | ||
346 | status = pm_runtime_get_sync(dev); | |
347 | if (status < 0) { | |
348 | dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status); | |
349 | goto err1; | |
350 | } | |
351 | #endif | |
352 | ||
353 | l = musb_readl(musb->mregs, OTG_INTERFSEL); | |
354 | ||
355 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
356 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ | |
357 | l &= ~ULPI_12PIN; /* Disable ULPI */ | |
358 | l |= UTMI_8BIT; /* Enable UTMI */ | |
359 | } else { | |
360 | l |= ULPI_12PIN; | |
361 | } | |
362 | ||
363 | musb_writel(musb->mregs, OTG_INTERFSEL, l); | |
364 | ||
365 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " | |
366 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", | |
367 | musb_readl(musb->mregs, OTG_REVISION), | |
368 | musb_readl(musb->mregs, OTG_SYSCONFIG), | |
369 | musb_readl(musb->mregs, OTG_SYSSTATUS), | |
370 | musb_readl(musb->mregs, OTG_INTERFSEL), | |
371 | musb_readl(musb->mregs, OTG_SIMENABLE)); | |
372 | ||
373 | #ifndef __UBOOT__ | |
374 | setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); | |
375 | ||
376 | if (glue->status != OMAP_MUSB_UNKNOWN) | |
377 | omap_musb_set_mailbox(glue); | |
378 | ||
379 | pm_runtime_put_noidle(musb->controller); | |
380 | #endif | |
381 | return 0; | |
382 | ||
383 | err1: | |
384 | return status; | |
385 | } | |
386 | ||
387 | static void omap2430_musb_enable(struct musb *musb) | |
388 | { | |
389 | #ifndef __UBOOT__ | |
390 | u8 devctl; | |
391 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); | |
392 | struct device *dev = musb->controller; | |
393 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
394 | struct musb_hdrc_platform_data *pdata = dev->platform_data; | |
395 | struct omap_musb_board_data *data = pdata->board_data; | |
396 | ||
397 | switch (glue->status) { | |
398 | ||
399 | case OMAP_MUSB_ID_GROUND: | |
400 | usb_phy_init(musb->xceiv); | |
401 | if (data->interface_type != MUSB_INTERFACE_UTMI) | |
402 | break; | |
403 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
404 | /* start the session */ | |
405 | devctl |= MUSB_DEVCTL_SESSION; | |
406 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
407 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & | |
408 | MUSB_DEVCTL_BDEVICE) { | |
409 | cpu_relax(); | |
410 | ||
411 | if (time_after(jiffies, timeout)) { | |
412 | dev_err(dev, "configured as A device timeout"); | |
413 | break; | |
414 | } | |
415 | } | |
416 | break; | |
417 | ||
418 | case OMAP_MUSB_VBUS_VALID: | |
419 | usb_phy_init(musb->xceiv); | |
420 | break; | |
421 | ||
422 | default: | |
423 | break; | |
424 | } | |
425 | #else | |
426 | #ifdef CONFIG_TWL4030_USB | |
427 | if (twl4030_usb_ulpi_init()) { | |
428 | serial_printf("ERROR: %s Could not initialize PHY\n", | |
429 | __PRETTY_FUNCTION__); | |
430 | } | |
431 | #endif | |
432 | #endif | |
433 | } | |
434 | ||
435 | static void omap2430_musb_disable(struct musb *musb) | |
436 | { | |
437 | #ifndef __UBOOT__ | |
438 | struct device *dev = musb->controller; | |
439 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
440 | ||
441 | if (glue->status != OMAP_MUSB_UNKNOWN) | |
442 | usb_phy_shutdown(musb->xceiv); | |
443 | #endif | |
444 | } | |
445 | ||
446 | static int omap2430_musb_exit(struct musb *musb) | |
447 | { | |
448 | del_timer_sync(&musb_idle_timer); | |
449 | ||
450 | omap2430_low_level_exit(musb); | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | #ifndef __UBOOT__ | |
456 | static const struct musb_platform_ops omap2430_ops = { | |
457 | #else | |
458 | const struct musb_platform_ops omap2430_ops = { | |
459 | #endif | |
460 | .init = omap2430_musb_init, | |
461 | .exit = omap2430_musb_exit, | |
462 | ||
463 | #ifndef __UBOOT__ | |
464 | .set_mode = omap2430_musb_set_mode, | |
465 | .try_idle = omap2430_musb_try_idle, | |
466 | ||
467 | .set_vbus = omap2430_musb_set_vbus, | |
468 | #endif | |
469 | ||
470 | .enable = omap2430_musb_enable, | |
471 | .disable = omap2430_musb_disable, | |
472 | }; | |
473 | ||
474 | #ifndef __UBOOT__ | |
475 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); | |
476 | ||
477 | static int __devinit omap2430_probe(struct platform_device *pdev) | |
478 | { | |
479 | struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; | |
480 | struct platform_device *musb; | |
481 | struct omap2430_glue *glue; | |
482 | int ret = -ENOMEM; | |
483 | ||
484 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); | |
485 | if (!glue) { | |
486 | dev_err(&pdev->dev, "failed to allocate glue context\n"); | |
487 | goto err0; | |
488 | } | |
489 | ||
490 | musb = platform_device_alloc("musb-hdrc", -1); | |
491 | if (!musb) { | |
492 | dev_err(&pdev->dev, "failed to allocate musb device\n"); | |
493 | goto err0; | |
494 | } | |
495 | ||
496 | musb->dev.parent = &pdev->dev; | |
497 | musb->dev.dma_mask = &omap2430_dmamask; | |
498 | musb->dev.coherent_dma_mask = omap2430_dmamask; | |
499 | ||
500 | glue->dev = &pdev->dev; | |
501 | glue->musb = musb; | |
502 | glue->status = OMAP_MUSB_UNKNOWN; | |
503 | ||
504 | pdata->platform_ops = &omap2430_ops; | |
505 | ||
506 | platform_set_drvdata(pdev, glue); | |
507 | ||
508 | /* | |
509 | * REVISIT if we ever have two instances of the wrapper, we will be | |
510 | * in big trouble | |
511 | */ | |
512 | _glue = glue; | |
513 | ||
514 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); | |
515 | ||
516 | ret = platform_device_add_resources(musb, pdev->resource, | |
517 | pdev->num_resources); | |
518 | if (ret) { | |
519 | dev_err(&pdev->dev, "failed to add resources\n"); | |
520 | goto err1; | |
521 | } | |
522 | ||
523 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); | |
524 | if (ret) { | |
525 | dev_err(&pdev->dev, "failed to add platform_data\n"); | |
526 | goto err1; | |
527 | } | |
528 | ||
529 | pm_runtime_enable(&pdev->dev); | |
530 | ||
531 | ret = platform_device_add(musb); | |
532 | if (ret) { | |
533 | dev_err(&pdev->dev, "failed to register musb device\n"); | |
534 | goto err1; | |
535 | } | |
536 | ||
537 | return 0; | |
538 | ||
539 | err1: | |
540 | platform_device_put(musb); | |
541 | ||
542 | err0: | |
543 | return ret; | |
544 | } | |
545 | ||
546 | static int __devexit omap2430_remove(struct platform_device *pdev) | |
547 | { | |
548 | struct omap2430_glue *glue = platform_get_drvdata(pdev); | |
549 | ||
550 | cancel_work_sync(&glue->omap_musb_mailbox_work); | |
551 | platform_device_del(glue->musb); | |
552 | platform_device_put(glue->musb); | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | #ifdef CONFIG_PM | |
558 | ||
559 | static int omap2430_runtime_suspend(struct device *dev) | |
560 | { | |
561 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
562 | struct musb *musb = glue_to_musb(glue); | |
563 | ||
564 | if (musb) { | |
565 | musb->context.otg_interfsel = musb_readl(musb->mregs, | |
566 | OTG_INTERFSEL); | |
567 | ||
568 | omap2430_low_level_exit(musb); | |
569 | usb_phy_set_suspend(musb->xceiv, 1); | |
570 | } | |
571 | ||
572 | return 0; | |
573 | } | |
574 | ||
575 | static int omap2430_runtime_resume(struct device *dev) | |
576 | { | |
577 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
578 | struct musb *musb = glue_to_musb(glue); | |
579 | ||
580 | if (musb) { | |
581 | omap2430_low_level_init(musb); | |
582 | musb_writel(musb->mregs, OTG_INTERFSEL, | |
583 | musb->context.otg_interfsel); | |
584 | ||
585 | usb_phy_set_suspend(musb->xceiv, 0); | |
586 | } | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | static struct dev_pm_ops omap2430_pm_ops = { | |
592 | .runtime_suspend = omap2430_runtime_suspend, | |
593 | .runtime_resume = omap2430_runtime_resume, | |
594 | }; | |
595 | ||
596 | #define DEV_PM_OPS (&omap2430_pm_ops) | |
597 | #else | |
598 | #define DEV_PM_OPS NULL | |
599 | #endif | |
600 | ||
601 | static struct platform_driver omap2430_driver = { | |
602 | .probe = omap2430_probe, | |
603 | .remove = __devexit_p(omap2430_remove), | |
604 | .driver = { | |
605 | .name = "musb-omap2430", | |
606 | .pm = DEV_PM_OPS, | |
607 | }, | |
608 | }; | |
609 | ||
610 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); | |
611 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
612 | MODULE_LICENSE("GPL v2"); | |
613 | ||
614 | static int __init omap2430_init(void) | |
615 | { | |
616 | return platform_driver_register(&omap2430_driver); | |
617 | } | |
618 | subsys_initcall(omap2430_init); | |
619 | ||
620 | static void __exit omap2430_exit(void) | |
621 | { | |
622 | platform_driver_unregister(&omap2430_driver); | |
623 | } | |
624 | module_exit(omap2430_exit); | |
625 | #endif |