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550a7375 FB |
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 | |
550a7375 FB |
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 | */ | |
27 | #include <linux/module.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/sched.h> | |
550a7375 FB |
30 | #include <linux/init.h> |
31 | #include <linux/list.h> | |
550a7375 | 32 | #include <linux/io.h> |
00a0b1d5 | 33 | #include <linux/of.h> |
dc09886b FB |
34 | #include <linux/platform_device.h> |
35 | #include <linux/dma-mapping.h> | |
207b0e1f HH |
36 | #include <linux/pm_runtime.h> |
37 | #include <linux/err.h> | |
12a19b5f | 38 | #include <linux/delay.h> |
8055555f | 39 | #include <linux/usb/musb.h> |
14da699b | 40 | #include <linux/phy/omap_control_phy.h> |
8934d3e4 | 41 | #include <linux/of_platform.h> |
550a7375 | 42 | |
550a7375 FB |
43 | #include "musb_core.h" |
44 | #include "omap2430.h" | |
45 | ||
a3cee12a FB |
46 | struct omap2430_glue { |
47 | struct device *dev; | |
48 | struct platform_device *musb; | |
8055555f | 49 | enum musb_vbus_id_status status; |
1e5acb8d | 50 | struct work_struct omap_musb_mailbox_work; |
ca784be3 | 51 | struct device *control_otghs; |
21f77bee TL |
52 | bool cable_connected; |
53 | bool enabled; | |
54 | bool powered; | |
a3cee12a | 55 | }; |
c20aebb9 | 56 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
a3cee12a | 57 | |
4b58ed11 | 58 | static struct omap2430_glue *_glue; |
c9721438 | 59 | |
550a7375 FB |
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 | ||
550a7375 FB |
69 | spin_lock_irqsave(&musb->lock, flags); |
70 | ||
e47d9254 | 71 | switch (musb->xceiv->otg->state) { |
550a7375 | 72 | case OTG_STATE_A_WAIT_BCON: |
550a7375 FB |
73 | |
74 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
75 | if (devctl & MUSB_DEVCTL_BDEVICE) { | |
e47d9254 | 76 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
550a7375 FB |
77 | MUSB_DEV_MODE(musb); |
78 | } else { | |
e47d9254 | 79 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; |
550a7375 FB |
80 | MUSB_HST_MODE(musb); |
81 | } | |
82 | break; | |
550a7375 FB |
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; | |
5c8a86e1 | 88 | dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power); |
550a7375 FB |
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; | |
8b125df5 | 94 | usb_hcd_poll_rh_status(musb->hcd); |
550a7375 | 95 | /* NOTE: it might really be A_WAIT_BCON ... */ |
e47d9254 | 96 | musb->xceiv->otg->state = OTG_STATE_A_HOST; |
550a7375 FB |
97 | } |
98 | break; | |
550a7375 FB |
99 | case OTG_STATE_A_HOST: |
100 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
101 | if (devctl & MUSB_DEVCTL_BDEVICE) | |
e47d9254 | 102 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
550a7375 | 103 | else |
e47d9254 | 104 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON; |
550a7375 FB |
105 | default: |
106 | break; | |
107 | } | |
108 | spin_unlock_irqrestore(&musb->lock, flags); | |
109 | } | |
110 | ||
111 | ||
743411b3 | 112 | static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) |
550a7375 FB |
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) | |
e47d9254 | 122 | && (musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON))) { |
5c8a86e1 | 123 | dev_dbg(musb->controller, "%s active, deleting timer\n", |
e47d9254 | 124 | usb_otg_state_string(musb->xceiv->otg->state)); |
550a7375 FB |
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 { | |
5c8a86e1 | 134 | dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); |
550a7375 FB |
135 | return; |
136 | } | |
137 | } | |
138 | last_timer = timeout; | |
139 | ||
5c8a86e1 | 140 | dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", |
e47d9254 | 141 | usb_otg_state_string(musb->xceiv->otg->state), |
550a7375 FB |
142 | (unsigned long)jiffies_to_msecs(timeout - jiffies)); |
143 | mod_timer(&musb_idle_timer, timeout); | |
144 | } | |
145 | ||
743411b3 | 146 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
550a7375 | 147 | { |
d445b6da | 148 | struct usb_otg *otg = musb->xceiv->otg; |
550a7375 | 149 | u8 devctl; |
594632ef | 150 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
550a7375 FB |
151 | /* HDRC controls CPEN, but beware current surges during device |
152 | * connect. They can trigger transient overcurrent conditions | |
153 | * that must be ignored. | |
154 | */ | |
155 | ||
156 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
157 | ||
158 | if (is_on) { | |
e47d9254 | 159 | if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) { |
12a19b5f | 160 | int loops = 100; |
594632ef HH |
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 | */ | |
5a805309 SS |
168 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
169 | MUSB_DEVCTL_BDEVICE) { | |
594632ef | 170 | |
12a19b5f | 171 | mdelay(5); |
594632ef HH |
172 | cpu_relax(); |
173 | ||
12a19b5f N |
174 | if (time_after(jiffies, timeout) |
175 | || loops-- <= 0) { | |
594632ef HH |
176 | dev_err(musb->controller, |
177 | "configured as A device timeout"); | |
594632ef HH |
178 | break; |
179 | } | |
180 | } | |
181 | ||
bb467cf5 | 182 | otg_set_vbus(otg, 1); |
594632ef HH |
183 | } else { |
184 | musb->is_active = 1; | |
d445b6da | 185 | otg->default_a = 1; |
e47d9254 | 186 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; |
594632ef HH |
187 | devctl |= MUSB_DEVCTL_SESSION; |
188 | MUSB_HST_MODE(musb); | |
189 | } | |
550a7375 FB |
190 | } else { |
191 | musb->is_active = 0; | |
192 | ||
193 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and | |
194 | * jumping right to B_IDLE... | |
195 | */ | |
196 | ||
d445b6da | 197 | otg->default_a = 0; |
e47d9254 | 198 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
550a7375 FB |
199 | devctl &= ~MUSB_DEVCTL_SESSION; |
200 | ||
201 | MUSB_DEV_MODE(musb); | |
202 | } | |
203 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
204 | ||
5c8a86e1 | 205 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
550a7375 | 206 | /* otg %3x conf %08x prcm %08x */ "\n", |
e47d9254 | 207 | usb_otg_state_string(musb->xceiv->otg->state), |
550a7375 FB |
208 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
209 | } | |
550a7375 | 210 | |
743411b3 | 211 | static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode) |
550a7375 FB |
212 | { |
213 | u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
214 | ||
215 | devctl |= MUSB_DEVCTL_SESSION; | |
216 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
217 | ||
96a274d1 | 218 | return 0; |
550a7375 FB |
219 | } |
220 | ||
c20aebb9 FB |
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); | |
c20aebb9 FB |
229 | } |
230 | ||
231 | static inline void omap2430_low_level_init(struct musb *musb) | |
232 | { | |
233 | u32 l; | |
234 | ||
c20aebb9 FB |
235 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
236 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ | |
237 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
238 | } | |
239 | ||
21f77bee TL |
240 | /* |
241 | * We can get multiple cable events so we need to keep track | |
242 | * of the power state. Only keep power enabled if USB cable is | |
243 | * connected and a gadget is started. | |
244 | */ | |
245 | static void omap2430_set_power(struct musb *musb, bool enabled, bool cable) | |
246 | { | |
247 | struct device *dev = musb->controller; | |
248 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
249 | bool power_up; | |
250 | int res; | |
251 | ||
252 | if (glue->enabled != enabled) | |
253 | glue->enabled = enabled; | |
254 | ||
255 | if (glue->cable_connected != cable) | |
256 | glue->cable_connected = cable; | |
257 | ||
258 | power_up = glue->enabled && glue->cable_connected; | |
259 | if (power_up == glue->powered) { | |
260 | dev_warn(musb->controller, "power state already %i\n", | |
261 | power_up); | |
262 | return; | |
263 | } | |
264 | ||
265 | glue->powered = power_up; | |
266 | ||
267 | if (power_up) { | |
268 | res = pm_runtime_get_sync(musb->controller); | |
269 | if (res < 0) { | |
270 | dev_err(musb->controller, "could not enable: %i", res); | |
271 | glue->powered = false; | |
272 | } | |
273 | } else { | |
274 | pm_runtime_mark_last_busy(musb->controller); | |
275 | pm_runtime_put_autosuspend(musb->controller); | |
276 | } | |
277 | } | |
278 | ||
8055555f | 279 | static void omap2430_musb_mailbox(enum musb_vbus_id_status status) |
594632ef | 280 | { |
c9721438 | 281 | struct omap2430_glue *glue = _glue; |
712d8efa | 282 | |
f8c4b0e7 AK |
283 | if (!glue) { |
284 | pr_err("%s: musb core is not yet initialized\n", __func__); | |
285 | return; | |
286 | } | |
287 | glue->status = status; | |
288 | ||
289 | if (!glue_to_musb(glue)) { | |
80ab72e1 | 290 | pr_err("%s: musb core is not yet ready\n", __func__); |
c9721438 KVA |
291 | return; |
292 | } | |
712d8efa | 293 | |
c9721438 | 294 | schedule_work(&glue->omap_musb_mailbox_work); |
712d8efa VP |
295 | } |
296 | ||
c9721438 | 297 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) |
712d8efa | 298 | { |
1e5acb8d | 299 | struct musb *musb = glue_to_musb(glue); |
594632ef | 300 | struct device *dev = musb->controller; |
c1a7d67c | 301 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
594632ef | 302 | struct omap_musb_board_data *data = pdata->board_data; |
c83a8542 | 303 | struct usb_otg *otg = musb->xceiv->otg; |
21f77bee TL |
304 | bool cable_connected; |
305 | ||
306 | cable_connected = ((glue->status == MUSB_ID_GROUND) || | |
307 | (glue->status == MUSB_VBUS_VALID)); | |
308 | ||
309 | if (cable_connected) | |
310 | omap2430_set_power(musb, glue->enabled, cable_connected); | |
594632ef | 311 | |
c9721438 | 312 | switch (glue->status) { |
8055555f | 313 | case MUSB_ID_GROUND: |
c9721438 | 314 | dev_dbg(dev, "ID GND\n"); |
594632ef | 315 | |
c83a8542 | 316 | otg->default_a = true; |
e47d9254 | 317 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; |
c9721438 | 318 | musb->xceiv->last_event = USB_EVENT_ID; |
032ec49f | 319 | if (musb->gadget_driver) { |
ca784be3 KVA |
320 | omap_control_usb_set_mode(glue->control_otghs, |
321 | USB_MODE_HOST); | |
70045c57 | 322 | omap2430_musb_set_vbus(musb, 1); |
594632ef HH |
323 | } |
324 | break; | |
325 | ||
8055555f | 326 | case MUSB_VBUS_VALID: |
c9721438 | 327 | dev_dbg(dev, "VBUS Connect\n"); |
594632ef | 328 | |
c83a8542 | 329 | otg->default_a = false; |
e47d9254 | 330 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
c9721438 | 331 | musb->xceiv->last_event = USB_EVENT_VBUS; |
ca784be3 | 332 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
594632ef HH |
333 | break; |
334 | ||
8055555f TL |
335 | case MUSB_ID_FLOAT: |
336 | case MUSB_VBUS_OFF: | |
c9721438 | 337 | dev_dbg(dev, "VBUS Disconnect\n"); |
594632ef | 338 | |
c9721438 | 339 | musb->xceiv->last_event = USB_EVENT_NONE; |
21f77bee | 340 | if (musb->gadget_driver) |
2c1fe89d | 341 | omap2430_musb_set_vbus(musb, 0); |
7acc6197 | 342 | |
bb467cf5 KVA |
343 | if (data->interface_type == MUSB_INTERFACE_UTMI) |
344 | otg_set_vbus(musb->xceiv->otg, 0); | |
345 | ||
ca784be3 KVA |
346 | omap_control_usb_set_mode(glue->control_otghs, |
347 | USB_MODE_DISCONNECT); | |
594632ef HH |
348 | break; |
349 | default: | |
c9721438 | 350 | dev_dbg(dev, "ID float\n"); |
594632ef | 351 | } |
6fa7178c | 352 | |
21f77bee TL |
353 | if (!cable_connected) |
354 | omap2430_set_power(musb, glue->enabled, cable_connected); | |
355 | ||
6fa7178c PR |
356 | atomic_notifier_call_chain(&musb->xceiv->notifier, |
357 | musb->xceiv->last_event, NULL); | |
594632ef HH |
358 | } |
359 | ||
c9721438 KVA |
360 | |
361 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) | |
362 | { | |
363 | struct omap2430_glue *glue = container_of(mailbox_work, | |
364 | struct omap2430_glue, omap_musb_mailbox_work); | |
8b2bc2c9 FB |
365 | struct musb *musb = glue_to_musb(glue); |
366 | struct device *dev = musb->controller; | |
367 | ||
368 | pm_runtime_get_sync(dev); | |
c9721438 | 369 | omap_musb_set_mailbox(glue); |
8b2bc2c9 FB |
370 | pm_runtime_mark_last_busy(dev); |
371 | pm_runtime_put_autosuspend(dev); | |
c9721438 KVA |
372 | } |
373 | ||
baef653a PDS |
374 | static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) |
375 | { | |
376 | unsigned long flags; | |
377 | irqreturn_t retval = IRQ_NONE; | |
378 | struct musb *musb = __hci; | |
379 | ||
380 | spin_lock_irqsave(&musb->lock, flags); | |
381 | ||
382 | musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); | |
383 | musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); | |
384 | musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); | |
385 | ||
386 | if (musb->int_usb || musb->int_tx || musb->int_rx) | |
387 | retval = musb_interrupt(musb); | |
388 | ||
389 | spin_unlock_irqrestore(&musb->lock, flags); | |
390 | ||
391 | return retval; | |
392 | } | |
393 | ||
743411b3 | 394 | static int omap2430_musb_init(struct musb *musb) |
550a7375 | 395 | { |
ad579699 S |
396 | u32 l; |
397 | int status = 0; | |
ea65df57 | 398 | struct device *dev = musb->controller; |
c9721438 | 399 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
c1a7d67c | 400 | struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); |
ea65df57 | 401 | struct omap_musb_board_data *data = plat->board_data; |
550a7375 | 402 | |
84e250ff DB |
403 | /* We require some kind of external transceiver, hooked |
404 | * up through ULPI. TWL4030-family PMICs include one, | |
405 | * which needs a driver, drivers aren't always needed. | |
406 | */ | |
3e3101d5 KVA |
407 | if (dev->parent->of_node) { |
408 | musb->phy = devm_phy_get(dev->parent, "usb2-phy"); | |
409 | ||
410 | /* We can't totally remove musb->xceiv as of now because | |
411 | * musb core uses xceiv.state and xceiv.otg. Once we have | |
412 | * a separate state machine to handle otg, these can be moved | |
413 | * out of xceiv and then we can start using the generic PHY | |
414 | * framework | |
415 | */ | |
b16604f2 KVA |
416 | musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, |
417 | "usb-phy", 0); | |
3e3101d5 | 418 | } else { |
b16604f2 | 419 | musb->xceiv = devm_usb_get_phy_dev(dev, 0); |
3e3101d5 KVA |
420 | musb->phy = devm_phy_get(dev, "usb"); |
421 | } | |
b16604f2 | 422 | |
a90199bb FB |
423 | if (IS_ERR(musb->xceiv)) { |
424 | status = PTR_ERR(musb->xceiv); | |
425 | ||
426 | if (status == -ENXIO) | |
427 | return status; | |
428 | ||
84e250ff | 429 | pr_err("HS USB OTG: no transceiver configured\n"); |
25736e0c | 430 | return -EPROBE_DEFER; |
84e250ff DB |
431 | } |
432 | ||
3e3101d5 KVA |
433 | if (IS_ERR(musb->phy)) { |
434 | pr_err("HS USB OTG: no PHY configured\n"); | |
435 | return PTR_ERR(musb->phy); | |
436 | } | |
baef653a PDS |
437 | musb->isr = omap2430_musb_interrupt; |
438 | ||
8f2279d5 TL |
439 | /* |
440 | * Enable runtime PM for musb parent (this driver). We can't | |
441 | * do it earlier as struct musb is not yet allocated and we | |
442 | * need to touch the musb registers for runtime PM. | |
443 | */ | |
444 | pm_runtime_enable(glue->dev); | |
445 | status = pm_runtime_get_sync(glue->dev); | |
446 | if (status < 0) | |
447 | goto err1; | |
448 | ||
8573e6a6 | 449 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
de2e1b0c MM |
450 | |
451 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
452 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ | |
453 | l &= ~ULPI_12PIN; /* Disable ULPI */ | |
454 | l |= UTMI_8BIT; /* Enable UTMI */ | |
455 | } else { | |
456 | l |= ULPI_12PIN; | |
457 | } | |
458 | ||
8573e6a6 | 459 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
550a7375 FB |
460 | |
461 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " | |
462 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", | |
8573e6a6 FB |
463 | musb_readl(musb->mregs, OTG_REVISION), |
464 | musb_readl(musb->mregs, OTG_SYSCONFIG), | |
465 | musb_readl(musb->mregs, OTG_SYSSTATUS), | |
466 | musb_readl(musb->mregs, OTG_INTERFSEL), | |
467 | musb_readl(musb->mregs, OTG_SIMENABLE)); | |
550a7375 | 468 | |
550a7375 FB |
469 | setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); |
470 | ||
8055555f | 471 | if (glue->status != MUSB_UNKNOWN) |
c9721438 KVA |
472 | omap_musb_set_mailbox(glue); |
473 | ||
3e3101d5 | 474 | phy_init(musb->phy); |
3063a12b | 475 | phy_power_on(musb->phy); |
7099dbc5 | 476 | pm_runtime_put(glue->dev); |
550a7375 | 477 | return 0; |
7acc6197 HH |
478 | |
479 | err1: | |
7acc6197 | 480 | return status; |
550a7375 FB |
481 | } |
482 | ||
002eda13 HH |
483 | static void omap2430_musb_enable(struct musb *musb) |
484 | { | |
485 | u8 devctl; | |
486 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); | |
487 | struct device *dev = musb->controller; | |
c9721438 | 488 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
c1a7d67c | 489 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
002eda13 HH |
490 | struct omap_musb_board_data *data = pdata->board_data; |
491 | ||
21f77bee TL |
492 | omap2430_set_power(musb, true, glue->cable_connected); |
493 | ||
c9721438 | 494 | switch (glue->status) { |
002eda13 | 495 | |
8055555f | 496 | case MUSB_ID_GROUND: |
ca784be3 | 497 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); |
08dec56e FC |
498 | if (data->interface_type != MUSB_INTERFACE_UTMI) |
499 | break; | |
500 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
501 | /* start the session */ | |
502 | devctl |= MUSB_DEVCTL_SESSION; | |
503 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
504 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & | |
505 | MUSB_DEVCTL_BDEVICE) { | |
506 | cpu_relax(); | |
507 | ||
508 | if (time_after(jiffies, timeout)) { | |
509 | dev_err(dev, "configured as A device timeout"); | |
510 | break; | |
002eda13 HH |
511 | } |
512 | } | |
513 | break; | |
514 | ||
8055555f | 515 | case MUSB_VBUS_VALID: |
ca784be3 | 516 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
002eda13 HH |
517 | break; |
518 | ||
519 | default: | |
520 | break; | |
521 | } | |
522 | } | |
523 | ||
524 | static void omap2430_musb_disable(struct musb *musb) | |
525 | { | |
c9721438 KVA |
526 | struct device *dev = musb->controller; |
527 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
528 | ||
8055555f | 529 | if (glue->status != MUSB_UNKNOWN) |
ca784be3 KVA |
530 | omap_control_usb_set_mode(glue->control_otghs, |
531 | USB_MODE_DISCONNECT); | |
21f77bee TL |
532 | |
533 | omap2430_set_power(musb, false, glue->cable_connected); | |
550a7375 FB |
534 | } |
535 | ||
743411b3 | 536 | static int omap2430_musb_exit(struct musb *musb) |
550a7375 | 537 | { |
19b9a83e | 538 | del_timer_sync(&musb_idle_timer); |
550a7375 | 539 | |
c20aebb9 | 540 | omap2430_low_level_exit(musb); |
3063a12b | 541 | phy_power_off(musb->phy); |
3e3101d5 | 542 | phy_exit(musb->phy); |
c20aebb9 | 543 | |
550a7375 FB |
544 | return 0; |
545 | } | |
743411b3 | 546 | |
f7ec9437 | 547 | static const struct musb_platform_ops omap2430_ops = { |
f8e9f34f | 548 | .quirks = MUSB_DMA_INVENTRA, |
7f6283ed TL |
549 | #ifdef CONFIG_USB_INVENTRA_DMA |
550 | .dma_init = musbhs_dma_controller_create, | |
551 | .dma_exit = musbhs_dma_controller_destroy, | |
552 | #endif | |
743411b3 FB |
553 | .init = omap2430_musb_init, |
554 | .exit = omap2430_musb_exit, | |
555 | ||
743411b3 FB |
556 | .set_mode = omap2430_musb_set_mode, |
557 | .try_idle = omap2430_musb_try_idle, | |
558 | ||
559 | .set_vbus = omap2430_musb_set_vbus, | |
002eda13 HH |
560 | |
561 | .enable = omap2430_musb_enable, | |
562 | .disable = omap2430_musb_disable, | |
8055555f TL |
563 | |
564 | .phy_callback = omap2430_musb_mailbox, | |
743411b3 | 565 | }; |
dc09886b FB |
566 | |
567 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); | |
568 | ||
41ac7b3a | 569 | static int omap2430_probe(struct platform_device *pdev) |
dc09886b | 570 | { |
c1f01be4 | 571 | struct resource musb_resources[3]; |
c1a7d67c | 572 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); |
00a0b1d5 | 573 | struct omap_musb_board_data *data; |
dc09886b | 574 | struct platform_device *musb; |
a3cee12a | 575 | struct omap2430_glue *glue; |
00a0b1d5 KVA |
576 | struct device_node *np = pdev->dev.of_node; |
577 | struct musb_hdrc_config *config; | |
606bf4d5 | 578 | int ret = -ENOMEM, val; |
dc09886b | 579 | |
b1183c24 | 580 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
af1bdfc9 | 581 | if (!glue) |
a3cee12a | 582 | goto err0; |
a3cee12a | 583 | |
2f771164 | 584 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
dc09886b FB |
585 | if (!musb) { |
586 | dev_err(&pdev->dev, "failed to allocate musb device\n"); | |
2f771164 | 587 | goto err0; |
dc09886b FB |
588 | } |
589 | ||
590 | musb->dev.parent = &pdev->dev; | |
591 | musb->dev.dma_mask = &omap2430_dmamask; | |
592 | musb->dev.coherent_dma_mask = omap2430_dmamask; | |
593 | ||
a3cee12a FB |
594 | glue->dev = &pdev->dev; |
595 | glue->musb = musb; | |
8055555f | 596 | glue->status = MUSB_UNKNOWN; |
8934d3e4 | 597 | glue->control_otghs = ERR_PTR(-ENODEV); |
a3cee12a | 598 | |
00a0b1d5 | 599 | if (np) { |
8934d3e4 RQ |
600 | struct device_node *control_node; |
601 | struct platform_device *control_pdev; | |
602 | ||
00a0b1d5 | 603 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
af1bdfc9 | 604 | if (!pdata) |
2f771164 | 605 | goto err2; |
00a0b1d5 KVA |
606 | |
607 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
af1bdfc9 | 608 | if (!data) |
2f771164 | 609 | goto err2; |
00a0b1d5 KVA |
610 | |
611 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); | |
af1bdfc9 | 612 | if (!config) |
2f771164 | 613 | goto err2; |
00a0b1d5 KVA |
614 | |
615 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); | |
eee44da0 | 616 | of_property_read_u32(np, "interface-type", |
00a0b1d5 | 617 | (u32 *)&data->interface_type); |
eee44da0 KVA |
618 | of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); |
619 | of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); | |
00a0b1d5 | 620 | of_property_read_u32(np, "power", (u32 *)&pdata->power); |
606bf4d5 TL |
621 | |
622 | ret = of_property_read_u32(np, "multipoint", &val); | |
623 | if (!ret && val) | |
624 | config->multipoint = true; | |
00a0b1d5 KVA |
625 | |
626 | pdata->board_data = data; | |
627 | pdata->config = config; | |
00a0b1d5 | 628 | |
8934d3e4 RQ |
629 | control_node = of_parse_phandle(np, "ctrl-module", 0); |
630 | if (control_node) { | |
631 | control_pdev = of_find_device_by_node(control_node); | |
632 | if (!control_pdev) { | |
633 | dev_err(&pdev->dev, "Failed to get control device\n"); | |
634 | ret = -EINVAL; | |
635 | goto err2; | |
636 | } | |
637 | glue->control_otghs = &control_pdev->dev; | |
ca784be3 | 638 | } |
ca784be3 | 639 | } |
f7ec9437 FB |
640 | pdata->platform_ops = &omap2430_ops; |
641 | ||
a3cee12a | 642 | platform_set_drvdata(pdev, glue); |
dc09886b | 643 | |
c9721438 KVA |
644 | /* |
645 | * REVISIT if we ever have two instances of the wrapper, we will be | |
646 | * in big trouble | |
647 | */ | |
648 | _glue = glue; | |
649 | ||
1e5acb8d KVA |
650 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
651 | ||
3a0ddc71 | 652 | memset(musb_resources, 0x00, sizeof(*musb_resources) * |
09fc7d22 FB |
653 | ARRAY_SIZE(musb_resources)); |
654 | ||
655 | musb_resources[0].name = pdev->resource[0].name; | |
656 | musb_resources[0].start = pdev->resource[0].start; | |
657 | musb_resources[0].end = pdev->resource[0].end; | |
658 | musb_resources[0].flags = pdev->resource[0].flags; | |
659 | ||
660 | musb_resources[1].name = pdev->resource[1].name; | |
661 | musb_resources[1].start = pdev->resource[1].start; | |
662 | musb_resources[1].end = pdev->resource[1].end; | |
663 | musb_resources[1].flags = pdev->resource[1].flags; | |
664 | ||
c1f01be4 KVA |
665 | musb_resources[2].name = pdev->resource[2].name; |
666 | musb_resources[2].start = pdev->resource[2].start; | |
667 | musb_resources[2].end = pdev->resource[2].end; | |
668 | musb_resources[2].flags = pdev->resource[2].flags; | |
669 | ||
09fc7d22 FB |
670 | ret = platform_device_add_resources(musb, musb_resources, |
671 | ARRAY_SIZE(musb_resources)); | |
dc09886b FB |
672 | if (ret) { |
673 | dev_err(&pdev->dev, "failed to add resources\n"); | |
65b3d52d | 674 | goto err2; |
dc09886b FB |
675 | } |
676 | ||
677 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); | |
678 | if (ret) { | |
679 | dev_err(&pdev->dev, "failed to add platform_data\n"); | |
65b3d52d | 680 | goto err2; |
dc09886b FB |
681 | } |
682 | ||
8f2279d5 TL |
683 | /* |
684 | * Note that we cannot enable PM runtime yet for this | |
685 | * driver as we need struct musb initialized first. | |
686 | * See omap2430_musb_init above. | |
687 | */ | |
3006dc8c | 688 | |
dc09886b FB |
689 | ret = platform_device_add(musb); |
690 | if (ret) { | |
691 | dev_err(&pdev->dev, "failed to register musb device\n"); | |
65b3d52d | 692 | goto err2; |
dc09886b FB |
693 | } |
694 | ||
207b0e1f | 695 | return 0; |
03491761 | 696 | |
65b3d52d | 697 | err2: |
b1183c24 | 698 | platform_device_put(musb); |
a3cee12a | 699 | |
dc09886b FB |
700 | err0: |
701 | return ret; | |
702 | } | |
703 | ||
fb4e98ab | 704 | static int omap2430_remove(struct platform_device *pdev) |
dc09886b | 705 | { |
21f77bee TL |
706 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
707 | struct musb *musb = glue_to_musb(glue); | |
dc09886b | 708 | |
03e43528 | 709 | pm_runtime_get_sync(glue->dev); |
1e5acb8d | 710 | cancel_work_sync(&glue->omap_musb_mailbox_work); |
f039df58 | 711 | platform_device_unregister(glue->musb); |
21f77bee | 712 | omap2430_set_power(musb, false, false); |
03e43528 TL |
713 | pm_runtime_put_sync(glue->dev); |
714 | pm_runtime_disable(glue->dev); | |
dc09886b FB |
715 | |
716 | return 0; | |
717 | } | |
718 | ||
c20aebb9 | 719 | #ifdef CONFIG_PM |
c20aebb9 | 720 | |
7acc6197 | 721 | static int omap2430_runtime_suspend(struct device *dev) |
c20aebb9 FB |
722 | { |
723 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
724 | struct musb *musb = glue_to_musb(glue); | |
725 | ||
afb76df1 VZ |
726 | if (musb) { |
727 | musb->context.otg_interfsel = musb_readl(musb->mregs, | |
728 | OTG_INTERFSEL); | |
e25bec16 | 729 | |
afb76df1 | 730 | omap2430_low_level_exit(musb); |
afb76df1 | 731 | } |
c20aebb9 FB |
732 | |
733 | return 0; | |
734 | } | |
735 | ||
7acc6197 | 736 | static int omap2430_runtime_resume(struct device *dev) |
c20aebb9 FB |
737 | { |
738 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
739 | struct musb *musb = glue_to_musb(glue); | |
c20aebb9 | 740 | |
8f2279d5 TL |
741 | if (!musb) |
742 | return -EPROBE_DEFER; | |
743 | ||
744 | omap2430_low_level_init(musb); | |
745 | musb_writel(musb->mregs, OTG_INTERFSEL, | |
746 | musb->context.otg_interfsel); | |
c20aebb9 FB |
747 | |
748 | return 0; | |
749 | } | |
750 | ||
751 | static struct dev_pm_ops omap2430_pm_ops = { | |
7acc6197 HH |
752 | .runtime_suspend = omap2430_runtime_suspend, |
753 | .runtime_resume = omap2430_runtime_resume, | |
c20aebb9 FB |
754 | }; |
755 | ||
756 | #define DEV_PM_OPS (&omap2430_pm_ops) | |
757 | #else | |
758 | #define DEV_PM_OPS NULL | |
759 | #endif | |
760 | ||
00a0b1d5 KVA |
761 | #ifdef CONFIG_OF |
762 | static const struct of_device_id omap2430_id_table[] = { | |
763 | { | |
764 | .compatible = "ti,omap4-musb" | |
765 | }, | |
766 | { | |
767 | .compatible = "ti,omap3-musb" | |
768 | }, | |
769 | {}, | |
770 | }; | |
771 | MODULE_DEVICE_TABLE(of, omap2430_id_table); | |
772 | #endif | |
773 | ||
dc09886b | 774 | static struct platform_driver omap2430_driver = { |
e9e8c85e | 775 | .probe = omap2430_probe, |
7690417d | 776 | .remove = omap2430_remove, |
dc09886b FB |
777 | .driver = { |
778 | .name = "musb-omap2430", | |
c20aebb9 | 779 | .pm = DEV_PM_OPS, |
00a0b1d5 | 780 | .of_match_table = of_match_ptr(omap2430_id_table), |
dc09886b FB |
781 | }, |
782 | }; | |
783 | ||
784 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); | |
785 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
786 | MODULE_LICENSE("GPL v2"); | |
787 | ||
788 | static int __init omap2430_init(void) | |
789 | { | |
e9e8c85e | 790 | return platform_driver_register(&omap2430_driver); |
dc09886b | 791 | } |
c9721438 | 792 | subsys_initcall(omap2430_init); |
dc09886b FB |
793 | |
794 | static void __exit omap2430_exit(void) | |
795 | { | |
796 | platform_driver_unregister(&omap2430_driver); | |
797 | } | |
798 | module_exit(omap2430_exit); |