Commit | Line | Data |
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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> |
c9721438 | 39 | #include <linux/usb/musb-omap.h> |
550a7375 | 40 | |
550a7375 FB |
41 | #include "musb_core.h" |
42 | #include "omap2430.h" | |
43 | ||
a3cee12a FB |
44 | struct omap2430_glue { |
45 | struct device *dev; | |
46 | struct platform_device *musb; | |
c9721438 | 47 | enum omap_musb_vbus_id_status status; |
1e5acb8d | 48 | struct work_struct omap_musb_mailbox_work; |
5ec40590 | 49 | u32 __iomem *control_otghs; |
a3cee12a | 50 | }; |
c20aebb9 | 51 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
a3cee12a | 52 | |
c9721438 KVA |
53 | struct omap2430_glue *_glue; |
54 | ||
550a7375 FB |
55 | static struct timer_list musb_idle_timer; |
56 | ||
5ec40590 KVA |
57 | /** |
58 | * omap4_usb_phy_mailbox - write to usb otg mailbox | |
59 | * @glue: struct omap2430_glue * | |
60 | * @val: the value to be written to the mailbox | |
61 | * | |
62 | * On detection of a device (ID pin is grounded), this API should be called | |
63 | * to set AVALID, VBUSVALID and ID pin is grounded. | |
64 | * | |
65 | * When OMAP is connected to a host (OMAP in device mode), this API | |
66 | * is called to set AVALID, VBUSVALID and ID pin in high impedance. | |
67 | * | |
68 | * XXX: This function will be removed once we have a seperate driver for | |
69 | * control module | |
70 | */ | |
71 | static void omap4_usb_phy_mailbox(struct omap2430_glue *glue, u32 val) | |
72 | { | |
73 | if (glue->control_otghs) | |
74 | writel(val, glue->control_otghs); | |
75 | } | |
76 | ||
550a7375 FB |
77 | static void musb_do_idle(unsigned long _musb) |
78 | { | |
79 | struct musb *musb = (void *)_musb; | |
80 | unsigned long flags; | |
81 | u8 power; | |
82 | u8 devctl; | |
83 | ||
550a7375 FB |
84 | spin_lock_irqsave(&musb->lock, flags); |
85 | ||
84e250ff | 86 | switch (musb->xceiv->state) { |
550a7375 | 87 | case OTG_STATE_A_WAIT_BCON: |
550a7375 FB |
88 | |
89 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
90 | if (devctl & MUSB_DEVCTL_BDEVICE) { | |
84e250ff | 91 | musb->xceiv->state = OTG_STATE_B_IDLE; |
550a7375 FB |
92 | MUSB_DEV_MODE(musb); |
93 | } else { | |
84e250ff | 94 | musb->xceiv->state = OTG_STATE_A_IDLE; |
550a7375 FB |
95 | MUSB_HST_MODE(musb); |
96 | } | |
97 | break; | |
550a7375 FB |
98 | case OTG_STATE_A_SUSPEND: |
99 | /* finish RESUME signaling? */ | |
100 | if (musb->port1_status & MUSB_PORT_STAT_RESUME) { | |
101 | power = musb_readb(musb->mregs, MUSB_POWER); | |
102 | power &= ~MUSB_POWER_RESUME; | |
5c8a86e1 | 103 | dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power); |
550a7375 FB |
104 | musb_writeb(musb->mregs, MUSB_POWER, power); |
105 | musb->is_active = 1; | |
106 | musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | |
107 | | MUSB_PORT_STAT_RESUME); | |
108 | musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; | |
109 | usb_hcd_poll_rh_status(musb_to_hcd(musb)); | |
110 | /* NOTE: it might really be A_WAIT_BCON ... */ | |
84e250ff | 111 | musb->xceiv->state = OTG_STATE_A_HOST; |
550a7375 FB |
112 | } |
113 | break; | |
550a7375 FB |
114 | case OTG_STATE_A_HOST: |
115 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
116 | if (devctl & MUSB_DEVCTL_BDEVICE) | |
84e250ff | 117 | musb->xceiv->state = OTG_STATE_B_IDLE; |
550a7375 | 118 | else |
84e250ff | 119 | musb->xceiv->state = OTG_STATE_A_WAIT_BCON; |
550a7375 FB |
120 | default: |
121 | break; | |
122 | } | |
123 | spin_unlock_irqrestore(&musb->lock, flags); | |
124 | } | |
125 | ||
126 | ||
743411b3 | 127 | static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) |
550a7375 FB |
128 | { |
129 | unsigned long default_timeout = jiffies + msecs_to_jiffies(3); | |
130 | static unsigned long last_timer; | |
131 | ||
132 | if (timeout == 0) | |
133 | timeout = default_timeout; | |
134 | ||
135 | /* Never idle if active, or when VBUS timeout is not set as host */ | |
136 | if (musb->is_active || ((musb->a_wait_bcon == 0) | |
84e250ff | 137 | && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { |
5c8a86e1 | 138 | dev_dbg(musb->controller, "%s active, deleting timer\n", |
3df00453 | 139 | otg_state_string(musb->xceiv->state)); |
550a7375 FB |
140 | del_timer(&musb_idle_timer); |
141 | last_timer = jiffies; | |
142 | return; | |
143 | } | |
144 | ||
145 | if (time_after(last_timer, timeout)) { | |
146 | if (!timer_pending(&musb_idle_timer)) | |
147 | last_timer = timeout; | |
148 | else { | |
5c8a86e1 | 149 | dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); |
550a7375 FB |
150 | return; |
151 | } | |
152 | } | |
153 | last_timer = timeout; | |
154 | ||
5c8a86e1 | 155 | dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", |
3df00453 | 156 | otg_state_string(musb->xceiv->state), |
550a7375 FB |
157 | (unsigned long)jiffies_to_msecs(timeout - jiffies)); |
158 | mod_timer(&musb_idle_timer, timeout); | |
159 | } | |
160 | ||
743411b3 | 161 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
550a7375 | 162 | { |
d445b6da | 163 | struct usb_otg *otg = musb->xceiv->otg; |
550a7375 | 164 | u8 devctl; |
594632ef | 165 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
550a7375 FB |
166 | /* HDRC controls CPEN, but beware current surges during device |
167 | * connect. They can trigger transient overcurrent conditions | |
168 | * that must be ignored. | |
169 | */ | |
170 | ||
171 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
172 | ||
173 | if (is_on) { | |
594632ef | 174 | if (musb->xceiv->state == OTG_STATE_A_IDLE) { |
12a19b5f | 175 | int loops = 100; |
594632ef HH |
176 | /* start the session */ |
177 | devctl |= MUSB_DEVCTL_SESSION; | |
178 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
179 | /* | |
180 | * Wait for the musb to set as A device to enable the | |
181 | * VBUS | |
182 | */ | |
183 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { | |
184 | ||
12a19b5f | 185 | mdelay(5); |
594632ef HH |
186 | cpu_relax(); |
187 | ||
12a19b5f N |
188 | if (time_after(jiffies, timeout) |
189 | || loops-- <= 0) { | |
594632ef HH |
190 | dev_err(musb->controller, |
191 | "configured as A device timeout"); | |
594632ef HH |
192 | break; |
193 | } | |
194 | } | |
195 | ||
10770c5a | 196 | if (otg->set_vbus) |
6e13c650 | 197 | otg_set_vbus(otg, 1); |
594632ef HH |
198 | } else { |
199 | musb->is_active = 1; | |
d445b6da | 200 | otg->default_a = 1; |
594632ef HH |
201 | musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; |
202 | devctl |= MUSB_DEVCTL_SESSION; | |
203 | MUSB_HST_MODE(musb); | |
204 | } | |
550a7375 FB |
205 | } else { |
206 | musb->is_active = 0; | |
207 | ||
208 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and | |
209 | * jumping right to B_IDLE... | |
210 | */ | |
211 | ||
d445b6da | 212 | otg->default_a = 0; |
84e250ff | 213 | musb->xceiv->state = OTG_STATE_B_IDLE; |
550a7375 FB |
214 | devctl &= ~MUSB_DEVCTL_SESSION; |
215 | ||
216 | MUSB_DEV_MODE(musb); | |
217 | } | |
218 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
219 | ||
5c8a86e1 | 220 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
550a7375 | 221 | /* otg %3x conf %08x prcm %08x */ "\n", |
3df00453 | 222 | otg_state_string(musb->xceiv->state), |
550a7375 FB |
223 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
224 | } | |
550a7375 | 225 | |
743411b3 | 226 | static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode) |
550a7375 FB |
227 | { |
228 | u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
229 | ||
230 | devctl |= MUSB_DEVCTL_SESSION; | |
231 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
232 | ||
96a274d1 | 233 | return 0; |
550a7375 FB |
234 | } |
235 | ||
c20aebb9 FB |
236 | static inline void omap2430_low_level_exit(struct musb *musb) |
237 | { | |
238 | u32 l; | |
239 | ||
240 | /* in any role */ | |
241 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); | |
242 | l |= ENABLEFORCE; /* enable MSTANDBY */ | |
243 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
c20aebb9 FB |
244 | } |
245 | ||
246 | static inline void omap2430_low_level_init(struct musb *musb) | |
247 | { | |
248 | u32 l; | |
249 | ||
c20aebb9 FB |
250 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
251 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ | |
252 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
253 | } | |
254 | ||
c9721438 | 255 | void omap_musb_mailbox(enum omap_musb_vbus_id_status status) |
594632ef | 256 | { |
c9721438 KVA |
257 | struct omap2430_glue *glue = _glue; |
258 | struct musb *musb = glue_to_musb(glue); | |
712d8efa | 259 | |
c9721438 KVA |
260 | glue->status = status; |
261 | if (!musb) { | |
262 | dev_err(glue->dev, "musb core is not yet ready\n"); | |
263 | return; | |
264 | } | |
712d8efa | 265 | |
c9721438 | 266 | schedule_work(&glue->omap_musb_mailbox_work); |
712d8efa | 267 | } |
c9721438 | 268 | EXPORT_SYMBOL_GPL(omap_musb_mailbox); |
712d8efa | 269 | |
c9721438 | 270 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) |
712d8efa | 271 | { |
5ec40590 | 272 | u32 val; |
1e5acb8d | 273 | struct musb *musb = glue_to_musb(glue); |
594632ef HH |
274 | struct device *dev = musb->controller; |
275 | struct musb_hdrc_platform_data *pdata = dev->platform_data; | |
276 | struct omap_musb_board_data *data = pdata->board_data; | |
c83a8542 | 277 | struct usb_otg *otg = musb->xceiv->otg; |
594632ef | 278 | |
c9721438 KVA |
279 | switch (glue->status) { |
280 | case OMAP_MUSB_ID_GROUND: | |
281 | dev_dbg(dev, "ID GND\n"); | |
594632ef | 282 | |
c83a8542 KVA |
283 | otg->default_a = true; |
284 | musb->xceiv->state = OTG_STATE_A_IDLE; | |
c9721438 | 285 | musb->xceiv->last_event = USB_EVENT_ID; |
032ec49f | 286 | if (musb->gadget_driver) { |
c9721438 | 287 | pm_runtime_get_sync(dev); |
5ec40590 KVA |
288 | val = AVALID | VBUSVALID; |
289 | omap4_usb_phy_mailbox(glue, val); | |
70045c57 | 290 | omap2430_musb_set_vbus(musb, 1); |
594632ef HH |
291 | } |
292 | break; | |
293 | ||
c9721438 KVA |
294 | case OMAP_MUSB_VBUS_VALID: |
295 | dev_dbg(dev, "VBUS Connect\n"); | |
594632ef | 296 | |
c83a8542 KVA |
297 | otg->default_a = false; |
298 | musb->xceiv->state = OTG_STATE_B_IDLE; | |
c9721438 | 299 | musb->xceiv->last_event = USB_EVENT_VBUS; |
7acc6197 | 300 | if (musb->gadget_driver) |
c9721438 | 301 | pm_runtime_get_sync(dev); |
5ec40590 KVA |
302 | val = IDDIG | AVALID | VBUSVALID; |
303 | omap4_usb_phy_mailbox(glue, val); | |
594632ef HH |
304 | break; |
305 | ||
c9721438 KVA |
306 | case OMAP_MUSB_ID_FLOAT: |
307 | case OMAP_MUSB_VBUS_OFF: | |
308 | dev_dbg(dev, "VBUS Disconnect\n"); | |
594632ef | 309 | |
c9721438 | 310 | musb->xceiv->last_event = USB_EVENT_NONE; |
032ec49f FB |
311 | if (musb->gadget_driver) { |
312 | pm_runtime_mark_last_busy(dev); | |
313 | pm_runtime_put_autosuspend(dev); | |
314 | } | |
7acc6197 | 315 | |
594632ef | 316 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
6e13c650 HK |
317 | if (musb->xceiv->otg->set_vbus) |
318 | otg_set_vbus(musb->xceiv->otg, 0); | |
594632ef | 319 | } |
5ec40590 KVA |
320 | val = SESSEND | IDDIG; |
321 | omap4_usb_phy_mailbox(glue, val); | |
594632ef HH |
322 | break; |
323 | default: | |
c9721438 | 324 | dev_dbg(dev, "ID float\n"); |
594632ef | 325 | } |
594632ef HH |
326 | } |
327 | ||
c9721438 KVA |
328 | |
329 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) | |
330 | { | |
331 | struct omap2430_glue *glue = container_of(mailbox_work, | |
332 | struct omap2430_glue, omap_musb_mailbox_work); | |
333 | omap_musb_set_mailbox(glue); | |
334 | } | |
335 | ||
743411b3 | 336 | static int omap2430_musb_init(struct musb *musb) |
550a7375 | 337 | { |
ad579699 S |
338 | u32 l; |
339 | int status = 0; | |
ea65df57 | 340 | struct device *dev = musb->controller; |
c9721438 | 341 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
ea65df57 HK |
342 | struct musb_hdrc_platform_data *plat = dev->platform_data; |
343 | struct omap_musb_board_data *data = plat->board_data; | |
550a7375 | 344 | |
84e250ff DB |
345 | /* We require some kind of external transceiver, hooked |
346 | * up through ULPI. TWL4030-family PMICs include one, | |
347 | * which needs a driver, drivers aren't always needed. | |
348 | */ | |
b1183c24 | 349 | musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); |
ded017ee | 350 | if (IS_ERR_OR_NULL(musb->xceiv)) { |
84e250ff DB |
351 | pr_err("HS USB OTG: no transceiver configured\n"); |
352 | return -ENODEV; | |
353 | } | |
354 | ||
7acc6197 HH |
355 | status = pm_runtime_get_sync(dev); |
356 | if (status < 0) { | |
ad579699 | 357 | dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status); |
7acc6197 HH |
358 | goto err1; |
359 | } | |
550a7375 | 360 | |
8573e6a6 | 361 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
de2e1b0c MM |
362 | |
363 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
364 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ | |
365 | l &= ~ULPI_12PIN; /* Disable ULPI */ | |
366 | l |= UTMI_8BIT; /* Enable UTMI */ | |
367 | } else { | |
368 | l |= ULPI_12PIN; | |
369 | } | |
370 | ||
8573e6a6 | 371 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
550a7375 FB |
372 | |
373 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " | |
374 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", | |
8573e6a6 FB |
375 | musb_readl(musb->mregs, OTG_REVISION), |
376 | musb_readl(musb->mregs, OTG_SYSCONFIG), | |
377 | musb_readl(musb->mregs, OTG_SYSSTATUS), | |
378 | musb_readl(musb->mregs, OTG_INTERFSEL), | |
379 | musb_readl(musb->mregs, OTG_SIMENABLE)); | |
550a7375 | 380 | |
550a7375 FB |
381 | setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); |
382 | ||
c9721438 KVA |
383 | if (glue->status != OMAP_MUSB_UNKNOWN) |
384 | omap_musb_set_mailbox(glue); | |
385 | ||
c04352a5 | 386 | pm_runtime_put_noidle(musb->controller); |
550a7375 | 387 | return 0; |
7acc6197 HH |
388 | |
389 | err1: | |
7acc6197 | 390 | return status; |
550a7375 FB |
391 | } |
392 | ||
002eda13 HH |
393 | static void omap2430_musb_enable(struct musb *musb) |
394 | { | |
395 | u8 devctl; | |
5ec40590 | 396 | u32 val; |
002eda13 HH |
397 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
398 | struct device *dev = musb->controller; | |
c9721438 | 399 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
002eda13 HH |
400 | struct musb_hdrc_platform_data *pdata = dev->platform_data; |
401 | struct omap_musb_board_data *data = pdata->board_data; | |
402 | ||
c9721438 | 403 | switch (glue->status) { |
002eda13 | 404 | |
c9721438 | 405 | case OMAP_MUSB_ID_GROUND: |
5ec40590 KVA |
406 | val = AVALID | VBUSVALID; |
407 | omap4_usb_phy_mailbox(glue, val); | |
08dec56e FC |
408 | if (data->interface_type != MUSB_INTERFACE_UTMI) |
409 | break; | |
410 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
411 | /* start the session */ | |
412 | devctl |= MUSB_DEVCTL_SESSION; | |
413 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
414 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & | |
415 | MUSB_DEVCTL_BDEVICE) { | |
416 | cpu_relax(); | |
417 | ||
418 | if (time_after(jiffies, timeout)) { | |
419 | dev_err(dev, "configured as A device timeout"); | |
420 | break; | |
002eda13 HH |
421 | } |
422 | } | |
423 | break; | |
424 | ||
c9721438 | 425 | case OMAP_MUSB_VBUS_VALID: |
5ec40590 KVA |
426 | val = IDDIG | AVALID | VBUSVALID; |
427 | omap4_usb_phy_mailbox(glue, val); | |
002eda13 HH |
428 | break; |
429 | ||
430 | default: | |
431 | break; | |
432 | } | |
433 | } | |
434 | ||
435 | static void omap2430_musb_disable(struct musb *musb) | |
436 | { | |
5ec40590 | 437 | u32 val; |
c9721438 KVA |
438 | struct device *dev = musb->controller; |
439 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
440 | ||
5ec40590 KVA |
441 | if (glue->status != OMAP_MUSB_UNKNOWN) { |
442 | val = SESSEND | IDDIG; | |
443 | omap4_usb_phy_mailbox(glue, val); | |
444 | } | |
550a7375 FB |
445 | } |
446 | ||
743411b3 | 447 | static int omap2430_musb_exit(struct musb *musb) |
550a7375 | 448 | { |
19b9a83e | 449 | del_timer_sync(&musb_idle_timer); |
550a7375 | 450 | |
c20aebb9 | 451 | omap2430_low_level_exit(musb); |
c20aebb9 | 452 | |
550a7375 FB |
453 | return 0; |
454 | } | |
743411b3 | 455 | |
f7ec9437 | 456 | static const struct musb_platform_ops omap2430_ops = { |
743411b3 FB |
457 | .init = omap2430_musb_init, |
458 | .exit = omap2430_musb_exit, | |
459 | ||
743411b3 FB |
460 | .set_mode = omap2430_musb_set_mode, |
461 | .try_idle = omap2430_musb_try_idle, | |
462 | ||
463 | .set_vbus = omap2430_musb_set_vbus, | |
002eda13 HH |
464 | |
465 | .enable = omap2430_musb_enable, | |
466 | .disable = omap2430_musb_disable, | |
743411b3 | 467 | }; |
dc09886b FB |
468 | |
469 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); | |
470 | ||
e9e8c85e | 471 | static int __devinit omap2430_probe(struct platform_device *pdev) |
dc09886b FB |
472 | { |
473 | struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; | |
00a0b1d5 | 474 | struct omap_musb_board_data *data; |
dc09886b | 475 | struct platform_device *musb; |
a3cee12a | 476 | struct omap2430_glue *glue; |
00a0b1d5 KVA |
477 | struct device_node *np = pdev->dev.of_node; |
478 | struct musb_hdrc_config *config; | |
5ec40590 | 479 | struct resource *res; |
dc09886b | 480 | int ret = -ENOMEM; |
65b3d52d | 481 | int musbid; |
dc09886b | 482 | |
b1183c24 | 483 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
a3cee12a FB |
484 | if (!glue) { |
485 | dev_err(&pdev->dev, "failed to allocate glue context\n"); | |
486 | goto err0; | |
487 | } | |
488 | ||
65b3d52d R |
489 | /* get the musb id */ |
490 | musbid = musb_get_id(&pdev->dev, GFP_KERNEL); | |
491 | if (musbid < 0) { | |
492 | dev_err(&pdev->dev, "failed to allocate musb id\n"); | |
493 | ret = -ENOMEM; | |
494 | goto err0; | |
495 | } | |
496 | ||
497 | musb = platform_device_alloc("musb-hdrc", musbid); | |
dc09886b FB |
498 | if (!musb) { |
499 | dev_err(&pdev->dev, "failed to allocate musb device\n"); | |
65b3d52d | 500 | goto err1; |
dc09886b FB |
501 | } |
502 | ||
65b3d52d | 503 | musb->id = musbid; |
dc09886b FB |
504 | musb->dev.parent = &pdev->dev; |
505 | musb->dev.dma_mask = &omap2430_dmamask; | |
506 | musb->dev.coherent_dma_mask = omap2430_dmamask; | |
507 | ||
a3cee12a FB |
508 | glue->dev = &pdev->dev; |
509 | glue->musb = musb; | |
c9721438 | 510 | glue->status = OMAP_MUSB_UNKNOWN; |
a3cee12a | 511 | |
5ec40590 KVA |
512 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
513 | ||
514 | glue->control_otghs = devm_request_and_ioremap(&pdev->dev, res); | |
515 | if (glue->control_otghs == NULL) | |
516 | dev_dbg(&pdev->dev, "Failed to obtain control memory\n"); | |
517 | ||
00a0b1d5 KVA |
518 | if (np) { |
519 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
520 | if (!pdata) { | |
521 | dev_err(&pdev->dev, | |
522 | "failed to allocate musb platfrom data\n"); | |
523 | ret = -ENOMEM; | |
524 | goto err1; | |
525 | } | |
526 | ||
527 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
528 | if (!data) { | |
529 | dev_err(&pdev->dev, | |
530 | "failed to allocate musb board data\n"); | |
531 | ret = -ENOMEM; | |
532 | goto err1; | |
533 | } | |
534 | ||
535 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); | |
536 | if (!data) { | |
537 | dev_err(&pdev->dev, | |
538 | "failed to allocate musb hdrc config\n"); | |
539 | goto err1; | |
540 | } | |
541 | ||
542 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); | |
543 | of_property_read_u32(np, "interface_type", | |
544 | (u32 *)&data->interface_type); | |
545 | of_property_read_u32(np, "num_eps", (u32 *)&config->num_eps); | |
546 | of_property_read_u32(np, "ram_bits", (u32 *)&config->ram_bits); | |
547 | of_property_read_u32(np, "power", (u32 *)&pdata->power); | |
548 | config->multipoint = of_property_read_bool(np, "multipoint"); | |
549 | ||
550 | pdata->board_data = data; | |
551 | pdata->config = config; | |
552 | } | |
553 | ||
f7ec9437 FB |
554 | pdata->platform_ops = &omap2430_ops; |
555 | ||
a3cee12a | 556 | platform_set_drvdata(pdev, glue); |
dc09886b | 557 | |
c9721438 KVA |
558 | /* |
559 | * REVISIT if we ever have two instances of the wrapper, we will be | |
560 | * in big trouble | |
561 | */ | |
562 | _glue = glue; | |
563 | ||
1e5acb8d KVA |
564 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
565 | ||
dc09886b FB |
566 | ret = platform_device_add_resources(musb, pdev->resource, |
567 | pdev->num_resources); | |
568 | if (ret) { | |
569 | dev_err(&pdev->dev, "failed to add resources\n"); | |
65b3d52d | 570 | goto err2; |
dc09886b FB |
571 | } |
572 | ||
573 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); | |
574 | if (ret) { | |
575 | dev_err(&pdev->dev, "failed to add platform_data\n"); | |
65b3d52d | 576 | goto err2; |
dc09886b FB |
577 | } |
578 | ||
3006dc8c KVA |
579 | pm_runtime_enable(&pdev->dev); |
580 | ||
dc09886b FB |
581 | ret = platform_device_add(musb); |
582 | if (ret) { | |
583 | dev_err(&pdev->dev, "failed to register musb device\n"); | |
65b3d52d | 584 | goto err2; |
dc09886b FB |
585 | } |
586 | ||
207b0e1f | 587 | return 0; |
03491761 | 588 | |
65b3d52d | 589 | err2: |
b1183c24 | 590 | platform_device_put(musb); |
a3cee12a | 591 | |
65b3d52d R |
592 | err1: |
593 | musb_put_id(&pdev->dev, musbid); | |
594 | ||
dc09886b FB |
595 | err0: |
596 | return ret; | |
597 | } | |
598 | ||
e9e8c85e | 599 | static int __devexit omap2430_remove(struct platform_device *pdev) |
dc09886b | 600 | { |
a3cee12a | 601 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
dc09886b | 602 | |
1e5acb8d | 603 | cancel_work_sync(&glue->omap_musb_mailbox_work); |
65b3d52d | 604 | musb_put_id(&pdev->dev, glue->musb->id); |
f039df58 | 605 | platform_device_unregister(glue->musb); |
dc09886b FB |
606 | |
607 | return 0; | |
608 | } | |
609 | ||
c20aebb9 | 610 | #ifdef CONFIG_PM |
c20aebb9 | 611 | |
7acc6197 | 612 | static int omap2430_runtime_suspend(struct device *dev) |
c20aebb9 FB |
613 | { |
614 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
615 | struct musb *musb = glue_to_musb(glue); | |
616 | ||
afb76df1 VZ |
617 | if (musb) { |
618 | musb->context.otg_interfsel = musb_readl(musb->mregs, | |
619 | OTG_INTERFSEL); | |
e25bec16 | 620 | |
afb76df1 VZ |
621 | omap2430_low_level_exit(musb); |
622 | usb_phy_set_suspend(musb->xceiv, 1); | |
623 | } | |
c20aebb9 FB |
624 | |
625 | return 0; | |
626 | } | |
627 | ||
7acc6197 | 628 | static int omap2430_runtime_resume(struct device *dev) |
c20aebb9 FB |
629 | { |
630 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
631 | struct musb *musb = glue_to_musb(glue); | |
c20aebb9 | 632 | |
afb76df1 VZ |
633 | if (musb) { |
634 | omap2430_low_level_init(musb); | |
635 | musb_writel(musb->mregs, OTG_INTERFSEL, | |
636 | musb->context.otg_interfsel); | |
e25bec16 | 637 | |
afb76df1 VZ |
638 | usb_phy_set_suspend(musb->xceiv, 0); |
639 | } | |
c20aebb9 FB |
640 | |
641 | return 0; | |
642 | } | |
643 | ||
644 | static struct dev_pm_ops omap2430_pm_ops = { | |
7acc6197 HH |
645 | .runtime_suspend = omap2430_runtime_suspend, |
646 | .runtime_resume = omap2430_runtime_resume, | |
c20aebb9 FB |
647 | }; |
648 | ||
649 | #define DEV_PM_OPS (&omap2430_pm_ops) | |
650 | #else | |
651 | #define DEV_PM_OPS NULL | |
652 | #endif | |
653 | ||
00a0b1d5 KVA |
654 | #ifdef CONFIG_OF |
655 | static const struct of_device_id omap2430_id_table[] = { | |
656 | { | |
657 | .compatible = "ti,omap4-musb" | |
658 | }, | |
659 | { | |
660 | .compatible = "ti,omap3-musb" | |
661 | }, | |
662 | {}, | |
663 | }; | |
664 | MODULE_DEVICE_TABLE(of, omap2430_id_table); | |
665 | #endif | |
666 | ||
dc09886b | 667 | static struct platform_driver omap2430_driver = { |
e9e8c85e FB |
668 | .probe = omap2430_probe, |
669 | .remove = __devexit_p(omap2430_remove), | |
dc09886b FB |
670 | .driver = { |
671 | .name = "musb-omap2430", | |
c20aebb9 | 672 | .pm = DEV_PM_OPS, |
00a0b1d5 | 673 | .of_match_table = of_match_ptr(omap2430_id_table), |
dc09886b FB |
674 | }, |
675 | }; | |
676 | ||
677 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); | |
678 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
679 | MODULE_LICENSE("GPL v2"); | |
680 | ||
681 | static int __init omap2430_init(void) | |
682 | { | |
e9e8c85e | 683 | return platform_driver_register(&omap2430_driver); |
dc09886b | 684 | } |
c9721438 | 685 | subsys_initcall(omap2430_init); |
dc09886b FB |
686 | |
687 | static void __exit omap2430_exit(void) | |
688 | { | |
689 | platform_driver_unregister(&omap2430_driver); | |
690 | } | |
691 | module_exit(omap2430_exit); |