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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; |
a3cee12a | 52 | }; |
c20aebb9 | 53 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
a3cee12a | 54 | |
4b58ed11 | 55 | static struct omap2430_glue *_glue; |
c9721438 | 56 | |
550a7375 FB |
57 | static struct timer_list musb_idle_timer; |
58 | ||
59 | static void musb_do_idle(unsigned long _musb) | |
60 | { | |
61 | struct musb *musb = (void *)_musb; | |
62 | unsigned long flags; | |
63 | u8 power; | |
64 | u8 devctl; | |
65 | ||
550a7375 FB |
66 | spin_lock_irqsave(&musb->lock, flags); |
67 | ||
e47d9254 | 68 | switch (musb->xceiv->otg->state) { |
550a7375 | 69 | case OTG_STATE_A_WAIT_BCON: |
550a7375 FB |
70 | |
71 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
72 | if (devctl & MUSB_DEVCTL_BDEVICE) { | |
e47d9254 | 73 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
550a7375 FB |
74 | MUSB_DEV_MODE(musb); |
75 | } else { | |
e47d9254 | 76 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; |
550a7375 FB |
77 | MUSB_HST_MODE(musb); |
78 | } | |
79 | break; | |
550a7375 FB |
80 | case OTG_STATE_A_SUSPEND: |
81 | /* finish RESUME signaling? */ | |
82 | if (musb->port1_status & MUSB_PORT_STAT_RESUME) { | |
83 | power = musb_readb(musb->mregs, MUSB_POWER); | |
84 | power &= ~MUSB_POWER_RESUME; | |
5c8a86e1 | 85 | dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power); |
550a7375 FB |
86 | musb_writeb(musb->mregs, MUSB_POWER, power); |
87 | musb->is_active = 1; | |
88 | musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | |
89 | | MUSB_PORT_STAT_RESUME); | |
90 | musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; | |
8b125df5 | 91 | usb_hcd_poll_rh_status(musb->hcd); |
550a7375 | 92 | /* NOTE: it might really be A_WAIT_BCON ... */ |
e47d9254 | 93 | musb->xceiv->otg->state = OTG_STATE_A_HOST; |
550a7375 FB |
94 | } |
95 | break; | |
550a7375 FB |
96 | case OTG_STATE_A_HOST: |
97 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
98 | if (devctl & MUSB_DEVCTL_BDEVICE) | |
e47d9254 | 99 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
550a7375 | 100 | else |
e47d9254 | 101 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON; |
550a7375 FB |
102 | default: |
103 | break; | |
104 | } | |
105 | spin_unlock_irqrestore(&musb->lock, flags); | |
106 | } | |
107 | ||
108 | ||
743411b3 | 109 | static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) |
550a7375 FB |
110 | { |
111 | unsigned long default_timeout = jiffies + msecs_to_jiffies(3); | |
112 | static unsigned long last_timer; | |
113 | ||
114 | if (timeout == 0) | |
115 | timeout = default_timeout; | |
116 | ||
117 | /* Never idle if active, or when VBUS timeout is not set as host */ | |
118 | if (musb->is_active || ((musb->a_wait_bcon == 0) | |
e47d9254 | 119 | && (musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON))) { |
5c8a86e1 | 120 | dev_dbg(musb->controller, "%s active, deleting timer\n", |
e47d9254 | 121 | usb_otg_state_string(musb->xceiv->otg->state)); |
550a7375 FB |
122 | del_timer(&musb_idle_timer); |
123 | last_timer = jiffies; | |
124 | return; | |
125 | } | |
126 | ||
127 | if (time_after(last_timer, timeout)) { | |
128 | if (!timer_pending(&musb_idle_timer)) | |
129 | last_timer = timeout; | |
130 | else { | |
5c8a86e1 | 131 | dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); |
550a7375 FB |
132 | return; |
133 | } | |
134 | } | |
135 | last_timer = timeout; | |
136 | ||
5c8a86e1 | 137 | dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", |
e47d9254 | 138 | usb_otg_state_string(musb->xceiv->otg->state), |
550a7375 FB |
139 | (unsigned long)jiffies_to_msecs(timeout - jiffies)); |
140 | mod_timer(&musb_idle_timer, timeout); | |
141 | } | |
142 | ||
743411b3 | 143 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
550a7375 | 144 | { |
d445b6da | 145 | struct usb_otg *otg = musb->xceiv->otg; |
550a7375 | 146 | u8 devctl; |
594632ef | 147 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
550a7375 FB |
148 | /* HDRC controls CPEN, but beware current surges during device |
149 | * connect. They can trigger transient overcurrent conditions | |
150 | * that must be ignored. | |
151 | */ | |
152 | ||
153 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
154 | ||
155 | if (is_on) { | |
e47d9254 | 156 | if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) { |
12a19b5f | 157 | int loops = 100; |
594632ef HH |
158 | /* start the session */ |
159 | devctl |= MUSB_DEVCTL_SESSION; | |
160 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
161 | /* | |
162 | * Wait for the musb to set as A device to enable the | |
163 | * VBUS | |
164 | */ | |
5a805309 SS |
165 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & |
166 | MUSB_DEVCTL_BDEVICE) { | |
594632ef | 167 | |
12a19b5f | 168 | mdelay(5); |
594632ef HH |
169 | cpu_relax(); |
170 | ||
12a19b5f N |
171 | if (time_after(jiffies, timeout) |
172 | || loops-- <= 0) { | |
594632ef HH |
173 | dev_err(musb->controller, |
174 | "configured as A device timeout"); | |
594632ef HH |
175 | break; |
176 | } | |
177 | } | |
178 | ||
bb467cf5 | 179 | otg_set_vbus(otg, 1); |
594632ef HH |
180 | } else { |
181 | musb->is_active = 1; | |
d445b6da | 182 | otg->default_a = 1; |
e47d9254 | 183 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; |
594632ef HH |
184 | devctl |= MUSB_DEVCTL_SESSION; |
185 | MUSB_HST_MODE(musb); | |
186 | } | |
550a7375 FB |
187 | } else { |
188 | musb->is_active = 0; | |
189 | ||
190 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and | |
191 | * jumping right to B_IDLE... | |
192 | */ | |
193 | ||
d445b6da | 194 | otg->default_a = 0; |
e47d9254 | 195 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
550a7375 FB |
196 | devctl &= ~MUSB_DEVCTL_SESSION; |
197 | ||
198 | MUSB_DEV_MODE(musb); | |
199 | } | |
200 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
201 | ||
5c8a86e1 | 202 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
550a7375 | 203 | /* otg %3x conf %08x prcm %08x */ "\n", |
e47d9254 | 204 | usb_otg_state_string(musb->xceiv->otg->state), |
550a7375 FB |
205 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
206 | } | |
550a7375 | 207 | |
743411b3 | 208 | static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode) |
550a7375 FB |
209 | { |
210 | u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
211 | ||
212 | devctl |= MUSB_DEVCTL_SESSION; | |
213 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
214 | ||
96a274d1 | 215 | return 0; |
550a7375 FB |
216 | } |
217 | ||
c20aebb9 FB |
218 | static inline void omap2430_low_level_exit(struct musb *musb) |
219 | { | |
220 | u32 l; | |
221 | ||
222 | /* in any role */ | |
223 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); | |
224 | l |= ENABLEFORCE; /* enable MSTANDBY */ | |
225 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
c20aebb9 FB |
226 | } |
227 | ||
228 | static inline void omap2430_low_level_init(struct musb *musb) | |
229 | { | |
230 | u32 l; | |
231 | ||
c20aebb9 FB |
232 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
233 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ | |
234 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
235 | } | |
236 | ||
8055555f | 237 | static void omap2430_musb_mailbox(enum musb_vbus_id_status status) |
594632ef | 238 | { |
c9721438 | 239 | struct omap2430_glue *glue = _glue; |
712d8efa | 240 | |
f8c4b0e7 AK |
241 | if (!glue) { |
242 | pr_err("%s: musb core is not yet initialized\n", __func__); | |
243 | return; | |
244 | } | |
245 | glue->status = status; | |
246 | ||
247 | if (!glue_to_musb(glue)) { | |
80ab72e1 | 248 | pr_err("%s: musb core is not yet ready\n", __func__); |
c9721438 KVA |
249 | return; |
250 | } | |
712d8efa | 251 | |
c9721438 | 252 | schedule_work(&glue->omap_musb_mailbox_work); |
712d8efa VP |
253 | } |
254 | ||
c9721438 | 255 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) |
712d8efa | 256 | { |
1e5acb8d | 257 | struct musb *musb = glue_to_musb(glue); |
594632ef | 258 | struct device *dev = musb->controller; |
c1a7d67c | 259 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
594632ef | 260 | struct omap_musb_board_data *data = pdata->board_data; |
c83a8542 | 261 | struct usb_otg *otg = musb->xceiv->otg; |
594632ef | 262 | |
c9721438 | 263 | switch (glue->status) { |
8055555f | 264 | case MUSB_ID_GROUND: |
c9721438 | 265 | dev_dbg(dev, "ID GND\n"); |
594632ef | 266 | |
c83a8542 | 267 | otg->default_a = true; |
e47d9254 | 268 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; |
c9721438 | 269 | musb->xceiv->last_event = USB_EVENT_ID; |
032ec49f | 270 | if (musb->gadget_driver) { |
c9721438 | 271 | pm_runtime_get_sync(dev); |
ca784be3 KVA |
272 | omap_control_usb_set_mode(glue->control_otghs, |
273 | USB_MODE_HOST); | |
70045c57 | 274 | omap2430_musb_set_vbus(musb, 1); |
594632ef HH |
275 | } |
276 | break; | |
277 | ||
8055555f | 278 | case MUSB_VBUS_VALID: |
c9721438 | 279 | dev_dbg(dev, "VBUS Connect\n"); |
594632ef | 280 | |
c83a8542 | 281 | otg->default_a = false; |
e47d9254 | 282 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
c9721438 | 283 | musb->xceiv->last_event = USB_EVENT_VBUS; |
7acc6197 | 284 | if (musb->gadget_driver) |
c9721438 | 285 | pm_runtime_get_sync(dev); |
ca784be3 | 286 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
594632ef HH |
287 | break; |
288 | ||
8055555f TL |
289 | case MUSB_ID_FLOAT: |
290 | case MUSB_VBUS_OFF: | |
c9721438 | 291 | dev_dbg(dev, "VBUS Disconnect\n"); |
594632ef | 292 | |
c9721438 | 293 | musb->xceiv->last_event = USB_EVENT_NONE; |
032ec49f | 294 | if (musb->gadget_driver) { |
2c1fe89d | 295 | omap2430_musb_set_vbus(musb, 0); |
032ec49f FB |
296 | pm_runtime_mark_last_busy(dev); |
297 | pm_runtime_put_autosuspend(dev); | |
298 | } | |
7acc6197 | 299 | |
bb467cf5 KVA |
300 | if (data->interface_type == MUSB_INTERFACE_UTMI) |
301 | otg_set_vbus(musb->xceiv->otg, 0); | |
302 | ||
ca784be3 KVA |
303 | omap_control_usb_set_mode(glue->control_otghs, |
304 | USB_MODE_DISCONNECT); | |
594632ef HH |
305 | break; |
306 | default: | |
c9721438 | 307 | dev_dbg(dev, "ID float\n"); |
594632ef | 308 | } |
6fa7178c PR |
309 | |
310 | atomic_notifier_call_chain(&musb->xceiv->notifier, | |
311 | musb->xceiv->last_event, NULL); | |
594632ef HH |
312 | } |
313 | ||
c9721438 KVA |
314 | |
315 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) | |
316 | { | |
317 | struct omap2430_glue *glue = container_of(mailbox_work, | |
318 | struct omap2430_glue, omap_musb_mailbox_work); | |
8b2bc2c9 FB |
319 | struct musb *musb = glue_to_musb(glue); |
320 | struct device *dev = musb->controller; | |
321 | ||
322 | pm_runtime_get_sync(dev); | |
c9721438 | 323 | omap_musb_set_mailbox(glue); |
8b2bc2c9 FB |
324 | pm_runtime_mark_last_busy(dev); |
325 | pm_runtime_put_autosuspend(dev); | |
c9721438 KVA |
326 | } |
327 | ||
baef653a PDS |
328 | static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) |
329 | { | |
330 | unsigned long flags; | |
331 | irqreturn_t retval = IRQ_NONE; | |
332 | struct musb *musb = __hci; | |
333 | ||
334 | spin_lock_irqsave(&musb->lock, flags); | |
335 | ||
336 | musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); | |
337 | musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); | |
338 | musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); | |
339 | ||
340 | if (musb->int_usb || musb->int_tx || musb->int_rx) | |
341 | retval = musb_interrupt(musb); | |
342 | ||
343 | spin_unlock_irqrestore(&musb->lock, flags); | |
344 | ||
345 | return retval; | |
346 | } | |
347 | ||
743411b3 | 348 | static int omap2430_musb_init(struct musb *musb) |
550a7375 | 349 | { |
ad579699 S |
350 | u32 l; |
351 | int status = 0; | |
ea65df57 | 352 | struct device *dev = musb->controller; |
c9721438 | 353 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
c1a7d67c | 354 | struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); |
ea65df57 | 355 | struct omap_musb_board_data *data = plat->board_data; |
550a7375 | 356 | |
84e250ff DB |
357 | /* We require some kind of external transceiver, hooked |
358 | * up through ULPI. TWL4030-family PMICs include one, | |
359 | * which needs a driver, drivers aren't always needed. | |
360 | */ | |
3e3101d5 KVA |
361 | if (dev->parent->of_node) { |
362 | musb->phy = devm_phy_get(dev->parent, "usb2-phy"); | |
363 | ||
364 | /* We can't totally remove musb->xceiv as of now because | |
365 | * musb core uses xceiv.state and xceiv.otg. Once we have | |
366 | * a separate state machine to handle otg, these can be moved | |
367 | * out of xceiv and then we can start using the generic PHY | |
368 | * framework | |
369 | */ | |
b16604f2 KVA |
370 | musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, |
371 | "usb-phy", 0); | |
3e3101d5 | 372 | } else { |
b16604f2 | 373 | musb->xceiv = devm_usb_get_phy_dev(dev, 0); |
3e3101d5 KVA |
374 | musb->phy = devm_phy_get(dev, "usb"); |
375 | } | |
b16604f2 | 376 | |
a90199bb FB |
377 | if (IS_ERR(musb->xceiv)) { |
378 | status = PTR_ERR(musb->xceiv); | |
379 | ||
380 | if (status == -ENXIO) | |
381 | return status; | |
382 | ||
84e250ff | 383 | pr_err("HS USB OTG: no transceiver configured\n"); |
25736e0c | 384 | return -EPROBE_DEFER; |
84e250ff DB |
385 | } |
386 | ||
3e3101d5 KVA |
387 | if (IS_ERR(musb->phy)) { |
388 | pr_err("HS USB OTG: no PHY configured\n"); | |
389 | return PTR_ERR(musb->phy); | |
390 | } | |
baef653a PDS |
391 | musb->isr = omap2430_musb_interrupt; |
392 | ||
8f2279d5 TL |
393 | /* |
394 | * Enable runtime PM for musb parent (this driver). We can't | |
395 | * do it earlier as struct musb is not yet allocated and we | |
396 | * need to touch the musb registers for runtime PM. | |
397 | */ | |
398 | pm_runtime_enable(glue->dev); | |
399 | status = pm_runtime_get_sync(glue->dev); | |
400 | if (status < 0) | |
401 | goto err1; | |
402 | ||
7acc6197 HH |
403 | status = pm_runtime_get_sync(dev); |
404 | if (status < 0) { | |
ad579699 | 405 | dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status); |
8f2279d5 | 406 | pm_runtime_put_sync(glue->dev); |
7acc6197 HH |
407 | goto err1; |
408 | } | |
550a7375 | 409 | |
8573e6a6 | 410 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
de2e1b0c MM |
411 | |
412 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
413 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ | |
414 | l &= ~ULPI_12PIN; /* Disable ULPI */ | |
415 | l |= UTMI_8BIT; /* Enable UTMI */ | |
416 | } else { | |
417 | l |= ULPI_12PIN; | |
418 | } | |
419 | ||
8573e6a6 | 420 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
550a7375 FB |
421 | |
422 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " | |
423 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", | |
8573e6a6 FB |
424 | musb_readl(musb->mregs, OTG_REVISION), |
425 | musb_readl(musb->mregs, OTG_SYSCONFIG), | |
426 | musb_readl(musb->mregs, OTG_SYSSTATUS), | |
427 | musb_readl(musb->mregs, OTG_INTERFSEL), | |
428 | musb_readl(musb->mregs, OTG_SIMENABLE)); | |
550a7375 | 429 | |
550a7375 FB |
430 | setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); |
431 | ||
8055555f | 432 | if (glue->status != MUSB_UNKNOWN) |
c9721438 KVA |
433 | omap_musb_set_mailbox(glue); |
434 | ||
3e3101d5 | 435 | phy_init(musb->phy); |
3063a12b | 436 | phy_power_on(musb->phy); |
3bf6db9b | 437 | |
c04352a5 | 438 | pm_runtime_put_noidle(musb->controller); |
8f2279d5 | 439 | pm_runtime_put_noidle(glue->dev); |
550a7375 | 440 | return 0; |
7acc6197 HH |
441 | |
442 | err1: | |
7acc6197 | 443 | return status; |
550a7375 FB |
444 | } |
445 | ||
002eda13 HH |
446 | static void omap2430_musb_enable(struct musb *musb) |
447 | { | |
448 | u8 devctl; | |
449 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); | |
450 | struct device *dev = musb->controller; | |
c9721438 | 451 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
c1a7d67c | 452 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); |
002eda13 HH |
453 | struct omap_musb_board_data *data = pdata->board_data; |
454 | ||
c9721438 | 455 | switch (glue->status) { |
002eda13 | 456 | |
8055555f | 457 | case MUSB_ID_GROUND: |
ca784be3 | 458 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); |
08dec56e FC |
459 | if (data->interface_type != MUSB_INTERFACE_UTMI) |
460 | break; | |
461 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
462 | /* start the session */ | |
463 | devctl |= MUSB_DEVCTL_SESSION; | |
464 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
465 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & | |
466 | MUSB_DEVCTL_BDEVICE) { | |
467 | cpu_relax(); | |
468 | ||
469 | if (time_after(jiffies, timeout)) { | |
470 | dev_err(dev, "configured as A device timeout"); | |
471 | break; | |
002eda13 HH |
472 | } |
473 | } | |
474 | break; | |
475 | ||
8055555f | 476 | case MUSB_VBUS_VALID: |
ca784be3 | 477 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
002eda13 HH |
478 | break; |
479 | ||
480 | default: | |
481 | break; | |
482 | } | |
483 | } | |
484 | ||
485 | static void omap2430_musb_disable(struct musb *musb) | |
486 | { | |
c9721438 KVA |
487 | struct device *dev = musb->controller; |
488 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
489 | ||
8055555f | 490 | if (glue->status != MUSB_UNKNOWN) |
ca784be3 KVA |
491 | omap_control_usb_set_mode(glue->control_otghs, |
492 | USB_MODE_DISCONNECT); | |
550a7375 FB |
493 | } |
494 | ||
743411b3 | 495 | static int omap2430_musb_exit(struct musb *musb) |
550a7375 | 496 | { |
19b9a83e | 497 | del_timer_sync(&musb_idle_timer); |
550a7375 | 498 | |
c20aebb9 | 499 | omap2430_low_level_exit(musb); |
3063a12b | 500 | phy_power_off(musb->phy); |
3e3101d5 | 501 | phy_exit(musb->phy); |
c20aebb9 | 502 | |
550a7375 FB |
503 | return 0; |
504 | } | |
743411b3 | 505 | |
f7ec9437 | 506 | static const struct musb_platform_ops omap2430_ops = { |
f8e9f34f | 507 | .quirks = MUSB_DMA_INVENTRA, |
7f6283ed TL |
508 | #ifdef CONFIG_USB_INVENTRA_DMA |
509 | .dma_init = musbhs_dma_controller_create, | |
510 | .dma_exit = musbhs_dma_controller_destroy, | |
511 | #endif | |
743411b3 FB |
512 | .init = omap2430_musb_init, |
513 | .exit = omap2430_musb_exit, | |
514 | ||
743411b3 FB |
515 | .set_mode = omap2430_musb_set_mode, |
516 | .try_idle = omap2430_musb_try_idle, | |
517 | ||
518 | .set_vbus = omap2430_musb_set_vbus, | |
002eda13 HH |
519 | |
520 | .enable = omap2430_musb_enable, | |
521 | .disable = omap2430_musb_disable, | |
8055555f TL |
522 | |
523 | .phy_callback = omap2430_musb_mailbox, | |
743411b3 | 524 | }; |
dc09886b FB |
525 | |
526 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); | |
527 | ||
41ac7b3a | 528 | static int omap2430_probe(struct platform_device *pdev) |
dc09886b | 529 | { |
c1f01be4 | 530 | struct resource musb_resources[3]; |
c1a7d67c | 531 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); |
00a0b1d5 | 532 | struct omap_musb_board_data *data; |
dc09886b | 533 | struct platform_device *musb; |
a3cee12a | 534 | struct omap2430_glue *glue; |
00a0b1d5 KVA |
535 | struct device_node *np = pdev->dev.of_node; |
536 | struct musb_hdrc_config *config; | |
606bf4d5 | 537 | int ret = -ENOMEM, val; |
dc09886b | 538 | |
b1183c24 | 539 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
af1bdfc9 | 540 | if (!glue) |
a3cee12a | 541 | goto err0; |
a3cee12a | 542 | |
2f771164 | 543 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
dc09886b FB |
544 | if (!musb) { |
545 | dev_err(&pdev->dev, "failed to allocate musb device\n"); | |
2f771164 | 546 | goto err0; |
dc09886b FB |
547 | } |
548 | ||
549 | musb->dev.parent = &pdev->dev; | |
550 | musb->dev.dma_mask = &omap2430_dmamask; | |
551 | musb->dev.coherent_dma_mask = omap2430_dmamask; | |
552 | ||
a3cee12a FB |
553 | glue->dev = &pdev->dev; |
554 | glue->musb = musb; | |
8055555f | 555 | glue->status = MUSB_UNKNOWN; |
8934d3e4 | 556 | glue->control_otghs = ERR_PTR(-ENODEV); |
a3cee12a | 557 | |
00a0b1d5 | 558 | if (np) { |
8934d3e4 RQ |
559 | struct device_node *control_node; |
560 | struct platform_device *control_pdev; | |
561 | ||
00a0b1d5 | 562 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
af1bdfc9 | 563 | if (!pdata) |
2f771164 | 564 | goto err2; |
00a0b1d5 KVA |
565 | |
566 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
af1bdfc9 | 567 | if (!data) |
2f771164 | 568 | goto err2; |
00a0b1d5 KVA |
569 | |
570 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); | |
af1bdfc9 | 571 | if (!config) |
2f771164 | 572 | goto err2; |
00a0b1d5 KVA |
573 | |
574 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); | |
eee44da0 | 575 | of_property_read_u32(np, "interface-type", |
00a0b1d5 | 576 | (u32 *)&data->interface_type); |
eee44da0 KVA |
577 | of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); |
578 | of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); | |
00a0b1d5 | 579 | of_property_read_u32(np, "power", (u32 *)&pdata->power); |
606bf4d5 TL |
580 | |
581 | ret = of_property_read_u32(np, "multipoint", &val); | |
582 | if (!ret && val) | |
583 | config->multipoint = true; | |
00a0b1d5 KVA |
584 | |
585 | pdata->board_data = data; | |
586 | pdata->config = config; | |
00a0b1d5 | 587 | |
8934d3e4 RQ |
588 | control_node = of_parse_phandle(np, "ctrl-module", 0); |
589 | if (control_node) { | |
590 | control_pdev = of_find_device_by_node(control_node); | |
591 | if (!control_pdev) { | |
592 | dev_err(&pdev->dev, "Failed to get control device\n"); | |
593 | ret = -EINVAL; | |
594 | goto err2; | |
595 | } | |
596 | glue->control_otghs = &control_pdev->dev; | |
ca784be3 | 597 | } |
ca784be3 | 598 | } |
f7ec9437 FB |
599 | pdata->platform_ops = &omap2430_ops; |
600 | ||
a3cee12a | 601 | platform_set_drvdata(pdev, glue); |
dc09886b | 602 | |
c9721438 KVA |
603 | /* |
604 | * REVISIT if we ever have two instances of the wrapper, we will be | |
605 | * in big trouble | |
606 | */ | |
607 | _glue = glue; | |
608 | ||
1e5acb8d KVA |
609 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
610 | ||
3a0ddc71 | 611 | memset(musb_resources, 0x00, sizeof(*musb_resources) * |
09fc7d22 FB |
612 | ARRAY_SIZE(musb_resources)); |
613 | ||
614 | musb_resources[0].name = pdev->resource[0].name; | |
615 | musb_resources[0].start = pdev->resource[0].start; | |
616 | musb_resources[0].end = pdev->resource[0].end; | |
617 | musb_resources[0].flags = pdev->resource[0].flags; | |
618 | ||
619 | musb_resources[1].name = pdev->resource[1].name; | |
620 | musb_resources[1].start = pdev->resource[1].start; | |
621 | musb_resources[1].end = pdev->resource[1].end; | |
622 | musb_resources[1].flags = pdev->resource[1].flags; | |
623 | ||
c1f01be4 KVA |
624 | musb_resources[2].name = pdev->resource[2].name; |
625 | musb_resources[2].start = pdev->resource[2].start; | |
626 | musb_resources[2].end = pdev->resource[2].end; | |
627 | musb_resources[2].flags = pdev->resource[2].flags; | |
628 | ||
09fc7d22 FB |
629 | ret = platform_device_add_resources(musb, musb_resources, |
630 | ARRAY_SIZE(musb_resources)); | |
dc09886b FB |
631 | if (ret) { |
632 | dev_err(&pdev->dev, "failed to add resources\n"); | |
65b3d52d | 633 | goto err2; |
dc09886b FB |
634 | } |
635 | ||
636 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); | |
637 | if (ret) { | |
638 | dev_err(&pdev->dev, "failed to add platform_data\n"); | |
65b3d52d | 639 | goto err2; |
dc09886b FB |
640 | } |
641 | ||
8f2279d5 TL |
642 | /* |
643 | * Note that we cannot enable PM runtime yet for this | |
644 | * driver as we need struct musb initialized first. | |
645 | * See omap2430_musb_init above. | |
646 | */ | |
3006dc8c | 647 | |
dc09886b FB |
648 | ret = platform_device_add(musb); |
649 | if (ret) { | |
650 | dev_err(&pdev->dev, "failed to register musb device\n"); | |
65b3d52d | 651 | goto err2; |
dc09886b FB |
652 | } |
653 | ||
207b0e1f | 654 | return 0; |
03491761 | 655 | |
65b3d52d | 656 | err2: |
b1183c24 | 657 | platform_device_put(musb); |
a3cee12a | 658 | |
dc09886b FB |
659 | err0: |
660 | return ret; | |
661 | } | |
662 | ||
fb4e98ab | 663 | static int omap2430_remove(struct platform_device *pdev) |
dc09886b | 664 | { |
a3cee12a | 665 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
dc09886b | 666 | |
1e5acb8d | 667 | cancel_work_sync(&glue->omap_musb_mailbox_work); |
f039df58 | 668 | platform_device_unregister(glue->musb); |
dc09886b FB |
669 | |
670 | return 0; | |
671 | } | |
672 | ||
c20aebb9 | 673 | #ifdef CONFIG_PM |
c20aebb9 | 674 | |
7acc6197 | 675 | static int omap2430_runtime_suspend(struct device *dev) |
c20aebb9 FB |
676 | { |
677 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
678 | struct musb *musb = glue_to_musb(glue); | |
679 | ||
afb76df1 VZ |
680 | if (musb) { |
681 | musb->context.otg_interfsel = musb_readl(musb->mregs, | |
682 | OTG_INTERFSEL); | |
e25bec16 | 683 | |
afb76df1 | 684 | omap2430_low_level_exit(musb); |
afb76df1 | 685 | } |
c20aebb9 FB |
686 | |
687 | return 0; | |
688 | } | |
689 | ||
7acc6197 | 690 | static int omap2430_runtime_resume(struct device *dev) |
c20aebb9 FB |
691 | { |
692 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
693 | struct musb *musb = glue_to_musb(glue); | |
c20aebb9 | 694 | |
8f2279d5 TL |
695 | if (!musb) |
696 | return -EPROBE_DEFER; | |
697 | ||
698 | omap2430_low_level_init(musb); | |
699 | musb_writel(musb->mregs, OTG_INTERFSEL, | |
700 | musb->context.otg_interfsel); | |
c20aebb9 FB |
701 | |
702 | return 0; | |
703 | } | |
704 | ||
705 | static struct dev_pm_ops omap2430_pm_ops = { | |
7acc6197 HH |
706 | .runtime_suspend = omap2430_runtime_suspend, |
707 | .runtime_resume = omap2430_runtime_resume, | |
c20aebb9 FB |
708 | }; |
709 | ||
710 | #define DEV_PM_OPS (&omap2430_pm_ops) | |
711 | #else | |
712 | #define DEV_PM_OPS NULL | |
713 | #endif | |
714 | ||
00a0b1d5 KVA |
715 | #ifdef CONFIG_OF |
716 | static const struct of_device_id omap2430_id_table[] = { | |
717 | { | |
718 | .compatible = "ti,omap4-musb" | |
719 | }, | |
720 | { | |
721 | .compatible = "ti,omap3-musb" | |
722 | }, | |
723 | {}, | |
724 | }; | |
725 | MODULE_DEVICE_TABLE(of, omap2430_id_table); | |
726 | #endif | |
727 | ||
dc09886b | 728 | static struct platform_driver omap2430_driver = { |
e9e8c85e | 729 | .probe = omap2430_probe, |
7690417d | 730 | .remove = omap2430_remove, |
dc09886b FB |
731 | .driver = { |
732 | .name = "musb-omap2430", | |
c20aebb9 | 733 | .pm = DEV_PM_OPS, |
00a0b1d5 | 734 | .of_match_table = of_match_ptr(omap2430_id_table), |
dc09886b FB |
735 | }, |
736 | }; | |
737 | ||
738 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); | |
739 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
740 | MODULE_LICENSE("GPL v2"); | |
741 | ||
742 | static int __init omap2430_init(void) | |
743 | { | |
e9e8c85e | 744 | return platform_driver_register(&omap2430_driver); |
dc09886b | 745 | } |
c9721438 | 746 | subsys_initcall(omap2430_init); |
dc09886b FB |
747 | |
748 | static void __exit omap2430_exit(void) | |
749 | { | |
750 | platform_driver_unregister(&omap2430_driver); | |
751 | } | |
752 | module_exit(omap2430_exit); |