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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> |
ca784be3 | 40 | #include <linux/usb/omap_control_usb.h> |
550a7375 | 41 | |
550a7375 FB |
42 | #include "musb_core.h" |
43 | #include "omap2430.h" | |
44 | ||
a3cee12a FB |
45 | struct omap2430_glue { |
46 | struct device *dev; | |
47 | struct platform_device *musb; | |
c9721438 | 48 | enum omap_musb_vbus_id_status status; |
1e5acb8d | 49 | struct work_struct omap_musb_mailbox_work; |
ca784be3 | 50 | struct device *control_otghs; |
a3cee12a | 51 | }; |
c20aebb9 | 52 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
a3cee12a | 53 | |
4b58ed11 | 54 | static struct omap2430_glue *_glue; |
c9721438 | 55 | |
550a7375 FB |
56 | static struct timer_list musb_idle_timer; |
57 | ||
58 | static void musb_do_idle(unsigned long _musb) | |
59 | { | |
60 | struct musb *musb = (void *)_musb; | |
61 | unsigned long flags; | |
62 | u8 power; | |
63 | u8 devctl; | |
64 | ||
550a7375 FB |
65 | spin_lock_irqsave(&musb->lock, flags); |
66 | ||
84e250ff | 67 | switch (musb->xceiv->state) { |
550a7375 | 68 | case OTG_STATE_A_WAIT_BCON: |
550a7375 FB |
69 | |
70 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
71 | if (devctl & MUSB_DEVCTL_BDEVICE) { | |
84e250ff | 72 | musb->xceiv->state = OTG_STATE_B_IDLE; |
550a7375 FB |
73 | MUSB_DEV_MODE(musb); |
74 | } else { | |
84e250ff | 75 | musb->xceiv->state = OTG_STATE_A_IDLE; |
550a7375 FB |
76 | MUSB_HST_MODE(musb); |
77 | } | |
78 | break; | |
550a7375 FB |
79 | case OTG_STATE_A_SUSPEND: |
80 | /* finish RESUME signaling? */ | |
81 | if (musb->port1_status & MUSB_PORT_STAT_RESUME) { | |
82 | power = musb_readb(musb->mregs, MUSB_POWER); | |
83 | power &= ~MUSB_POWER_RESUME; | |
5c8a86e1 | 84 | dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power); |
550a7375 FB |
85 | musb_writeb(musb->mregs, MUSB_POWER, power); |
86 | musb->is_active = 1; | |
87 | musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | |
88 | | MUSB_PORT_STAT_RESUME); | |
89 | musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; | |
90 | usb_hcd_poll_rh_status(musb_to_hcd(musb)); | |
91 | /* NOTE: it might really be A_WAIT_BCON ... */ | |
84e250ff | 92 | musb->xceiv->state = OTG_STATE_A_HOST; |
550a7375 FB |
93 | } |
94 | break; | |
550a7375 FB |
95 | case OTG_STATE_A_HOST: |
96 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
97 | if (devctl & MUSB_DEVCTL_BDEVICE) | |
84e250ff | 98 | musb->xceiv->state = OTG_STATE_B_IDLE; |
550a7375 | 99 | else |
84e250ff | 100 | musb->xceiv->state = OTG_STATE_A_WAIT_BCON; |
550a7375 FB |
101 | default: |
102 | break; | |
103 | } | |
104 | spin_unlock_irqrestore(&musb->lock, flags); | |
105 | } | |
106 | ||
107 | ||
743411b3 | 108 | static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout) |
550a7375 FB |
109 | { |
110 | unsigned long default_timeout = jiffies + msecs_to_jiffies(3); | |
111 | static unsigned long last_timer; | |
112 | ||
113 | if (timeout == 0) | |
114 | timeout = default_timeout; | |
115 | ||
116 | /* Never idle if active, or when VBUS timeout is not set as host */ | |
117 | if (musb->is_active || ((musb->a_wait_bcon == 0) | |
84e250ff | 118 | && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) { |
5c8a86e1 | 119 | dev_dbg(musb->controller, "%s active, deleting timer\n", |
42c0bf1c | 120 | usb_otg_state_string(musb->xceiv->state)); |
550a7375 FB |
121 | del_timer(&musb_idle_timer); |
122 | last_timer = jiffies; | |
123 | return; | |
124 | } | |
125 | ||
126 | if (time_after(last_timer, timeout)) { | |
127 | if (!timer_pending(&musb_idle_timer)) | |
128 | last_timer = timeout; | |
129 | else { | |
5c8a86e1 | 130 | dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n"); |
550a7375 FB |
131 | return; |
132 | } | |
133 | } | |
134 | last_timer = timeout; | |
135 | ||
5c8a86e1 | 136 | dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n", |
42c0bf1c | 137 | usb_otg_state_string(musb->xceiv->state), |
550a7375 FB |
138 | (unsigned long)jiffies_to_msecs(timeout - jiffies)); |
139 | mod_timer(&musb_idle_timer, timeout); | |
140 | } | |
141 | ||
743411b3 | 142 | static void omap2430_musb_set_vbus(struct musb *musb, int is_on) |
550a7375 | 143 | { |
d445b6da | 144 | struct usb_otg *otg = musb->xceiv->otg; |
550a7375 | 145 | u8 devctl; |
594632ef | 146 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); |
550a7375 FB |
147 | /* HDRC controls CPEN, but beware current surges during device |
148 | * connect. They can trigger transient overcurrent conditions | |
149 | * that must be ignored. | |
150 | */ | |
151 | ||
152 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
153 | ||
154 | if (is_on) { | |
594632ef | 155 | if (musb->xceiv->state == OTG_STATE_A_IDLE) { |
12a19b5f | 156 | int loops = 100; |
594632ef HH |
157 | /* start the session */ |
158 | devctl |= MUSB_DEVCTL_SESSION; | |
159 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
160 | /* | |
161 | * Wait for the musb to set as A device to enable the | |
162 | * VBUS | |
163 | */ | |
164 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { | |
165 | ||
12a19b5f | 166 | mdelay(5); |
594632ef HH |
167 | cpu_relax(); |
168 | ||
12a19b5f N |
169 | if (time_after(jiffies, timeout) |
170 | || loops-- <= 0) { | |
594632ef HH |
171 | dev_err(musb->controller, |
172 | "configured as A device timeout"); | |
594632ef HH |
173 | break; |
174 | } | |
175 | } | |
176 | ||
10770c5a | 177 | if (otg->set_vbus) |
6e13c650 | 178 | otg_set_vbus(otg, 1); |
594632ef HH |
179 | } else { |
180 | musb->is_active = 1; | |
d445b6da | 181 | otg->default_a = 1; |
594632ef HH |
182 | musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; |
183 | devctl |= MUSB_DEVCTL_SESSION; | |
184 | MUSB_HST_MODE(musb); | |
185 | } | |
550a7375 FB |
186 | } else { |
187 | musb->is_active = 0; | |
188 | ||
189 | /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and | |
190 | * jumping right to B_IDLE... | |
191 | */ | |
192 | ||
d445b6da | 193 | otg->default_a = 0; |
84e250ff | 194 | musb->xceiv->state = OTG_STATE_B_IDLE; |
550a7375 FB |
195 | devctl &= ~MUSB_DEVCTL_SESSION; |
196 | ||
197 | MUSB_DEV_MODE(musb); | |
198 | } | |
199 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
200 | ||
5c8a86e1 | 201 | dev_dbg(musb->controller, "VBUS %s, devctl %02x " |
550a7375 | 202 | /* otg %3x conf %08x prcm %08x */ "\n", |
42c0bf1c | 203 | usb_otg_state_string(musb->xceiv->state), |
550a7375 FB |
204 | musb_readb(musb->mregs, MUSB_DEVCTL)); |
205 | } | |
550a7375 | 206 | |
743411b3 | 207 | static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode) |
550a7375 FB |
208 | { |
209 | u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
210 | ||
211 | devctl |= MUSB_DEVCTL_SESSION; | |
212 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
213 | ||
96a274d1 | 214 | return 0; |
550a7375 FB |
215 | } |
216 | ||
c20aebb9 FB |
217 | static inline void omap2430_low_level_exit(struct musb *musb) |
218 | { | |
219 | u32 l; | |
220 | ||
221 | /* in any role */ | |
222 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); | |
223 | l |= ENABLEFORCE; /* enable MSTANDBY */ | |
224 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
c20aebb9 FB |
225 | } |
226 | ||
227 | static inline void omap2430_low_level_init(struct musb *musb) | |
228 | { | |
229 | u32 l; | |
230 | ||
c20aebb9 FB |
231 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
232 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ | |
233 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
234 | } | |
235 | ||
c9721438 | 236 | void omap_musb_mailbox(enum omap_musb_vbus_id_status status) |
594632ef | 237 | { |
c9721438 | 238 | struct omap2430_glue *glue = _glue; |
712d8efa | 239 | |
f8c4b0e7 AK |
240 | if (!glue) { |
241 | pr_err("%s: musb core is not yet initialized\n", __func__); | |
242 | return; | |
243 | } | |
244 | glue->status = status; | |
245 | ||
246 | if (!glue_to_musb(glue)) { | |
80ab72e1 | 247 | pr_err("%s: musb core is not yet ready\n", __func__); |
c9721438 KVA |
248 | return; |
249 | } | |
712d8efa | 250 | |
c9721438 | 251 | schedule_work(&glue->omap_musb_mailbox_work); |
712d8efa | 252 | } |
c9721438 | 253 | EXPORT_SYMBOL_GPL(omap_musb_mailbox); |
712d8efa | 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 HH |
258 | struct device *dev = musb->controller; |
259 | struct musb_hdrc_platform_data *pdata = dev->platform_data; | |
260 | struct omap_musb_board_data *data = pdata->board_data; | |
c83a8542 | 261 | struct usb_otg *otg = musb->xceiv->otg; |
594632ef | 262 | |
c9721438 KVA |
263 | switch (glue->status) { |
264 | case OMAP_MUSB_ID_GROUND: | |
265 | dev_dbg(dev, "ID GND\n"); | |
594632ef | 266 | |
c83a8542 KVA |
267 | otg->default_a = true; |
268 | musb->xceiv->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 | ||
c9721438 KVA |
278 | case OMAP_MUSB_VBUS_VALID: |
279 | dev_dbg(dev, "VBUS Connect\n"); | |
594632ef | 280 | |
c83a8542 KVA |
281 | otg->default_a = false; |
282 | musb->xceiv->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 | ||
c9721438 KVA |
289 | case OMAP_MUSB_ID_FLOAT: |
290 | case OMAP_MUSB_VBUS_OFF: | |
291 | dev_dbg(dev, "VBUS Disconnect\n"); | |
594632ef | 292 | |
c9721438 | 293 | musb->xceiv->last_event = USB_EVENT_NONE; |
032ec49f FB |
294 | if (musb->gadget_driver) { |
295 | pm_runtime_mark_last_busy(dev); | |
296 | pm_runtime_put_autosuspend(dev); | |
297 | } | |
7acc6197 | 298 | |
594632ef | 299 | if (data->interface_type == MUSB_INTERFACE_UTMI) { |
6e13c650 HK |
300 | if (musb->xceiv->otg->set_vbus) |
301 | otg_set_vbus(musb->xceiv->otg, 0); | |
594632ef | 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 | } |
594632ef HH |
309 | } |
310 | ||
c9721438 KVA |
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 | ||
baef653a PDS |
319 | static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) |
320 | { | |
321 | unsigned long flags; | |
322 | irqreturn_t retval = IRQ_NONE; | |
323 | struct musb *musb = __hci; | |
324 | ||
325 | spin_lock_irqsave(&musb->lock, flags); | |
326 | ||
327 | musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); | |
328 | musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); | |
329 | musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); | |
330 | ||
331 | if (musb->int_usb || musb->int_tx || musb->int_rx) | |
332 | retval = musb_interrupt(musb); | |
333 | ||
334 | spin_unlock_irqrestore(&musb->lock, flags); | |
335 | ||
336 | return retval; | |
337 | } | |
338 | ||
743411b3 | 339 | static int omap2430_musb_init(struct musb *musb) |
550a7375 | 340 | { |
ad579699 S |
341 | u32 l; |
342 | int status = 0; | |
ea65df57 | 343 | struct device *dev = musb->controller; |
c9721438 | 344 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
ea65df57 HK |
345 | struct musb_hdrc_platform_data *plat = dev->platform_data; |
346 | struct omap_musb_board_data *data = plat->board_data; | |
550a7375 | 347 | |
84e250ff DB |
348 | /* We require some kind of external transceiver, hooked |
349 | * up through ULPI. TWL4030-family PMICs include one, | |
350 | * which needs a driver, drivers aren't always needed. | |
351 | */ | |
b16604f2 KVA |
352 | if (dev->parent->of_node) |
353 | musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, | |
354 | "usb-phy", 0); | |
355 | else | |
356 | musb->xceiv = devm_usb_get_phy_dev(dev, 0); | |
357 | ||
ded017ee | 358 | if (IS_ERR_OR_NULL(musb->xceiv)) { |
84e250ff | 359 | pr_err("HS USB OTG: no transceiver configured\n"); |
25736e0c | 360 | return -EPROBE_DEFER; |
84e250ff DB |
361 | } |
362 | ||
baef653a PDS |
363 | musb->isr = omap2430_musb_interrupt; |
364 | ||
7acc6197 HH |
365 | status = pm_runtime_get_sync(dev); |
366 | if (status < 0) { | |
ad579699 | 367 | dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status); |
7acc6197 HH |
368 | goto err1; |
369 | } | |
550a7375 | 370 | |
8573e6a6 | 371 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
de2e1b0c MM |
372 | |
373 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
374 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ | |
375 | l &= ~ULPI_12PIN; /* Disable ULPI */ | |
376 | l |= UTMI_8BIT; /* Enable UTMI */ | |
377 | } else { | |
378 | l |= ULPI_12PIN; | |
379 | } | |
380 | ||
8573e6a6 | 381 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
550a7375 FB |
382 | |
383 | pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, " | |
384 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", | |
8573e6a6 FB |
385 | musb_readl(musb->mregs, OTG_REVISION), |
386 | musb_readl(musb->mregs, OTG_SYSCONFIG), | |
387 | musb_readl(musb->mregs, OTG_SYSSTATUS), | |
388 | musb_readl(musb->mregs, OTG_INTERFSEL), | |
389 | musb_readl(musb->mregs, OTG_SIMENABLE)); | |
550a7375 | 390 | |
550a7375 FB |
391 | setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); |
392 | ||
c9721438 KVA |
393 | if (glue->status != OMAP_MUSB_UNKNOWN) |
394 | omap_musb_set_mailbox(glue); | |
395 | ||
c04352a5 | 396 | pm_runtime_put_noidle(musb->controller); |
550a7375 | 397 | return 0; |
7acc6197 HH |
398 | |
399 | err1: | |
7acc6197 | 400 | return status; |
550a7375 FB |
401 | } |
402 | ||
002eda13 HH |
403 | static void omap2430_musb_enable(struct musb *musb) |
404 | { | |
405 | u8 devctl; | |
406 | unsigned long timeout = jiffies + msecs_to_jiffies(1000); | |
407 | struct device *dev = musb->controller; | |
c9721438 | 408 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
002eda13 HH |
409 | struct musb_hdrc_platform_data *pdata = dev->platform_data; |
410 | struct omap_musb_board_data *data = pdata->board_data; | |
411 | ||
c9721438 | 412 | switch (glue->status) { |
002eda13 | 413 | |
c9721438 | 414 | case OMAP_MUSB_ID_GROUND: |
ca784be3 | 415 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); |
08dec56e FC |
416 | if (data->interface_type != MUSB_INTERFACE_UTMI) |
417 | break; | |
418 | devctl = musb_readb(musb->mregs, MUSB_DEVCTL); | |
419 | /* start the session */ | |
420 | devctl |= MUSB_DEVCTL_SESSION; | |
421 | musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); | |
422 | while (musb_readb(musb->mregs, MUSB_DEVCTL) & | |
423 | MUSB_DEVCTL_BDEVICE) { | |
424 | cpu_relax(); | |
425 | ||
426 | if (time_after(jiffies, timeout)) { | |
427 | dev_err(dev, "configured as A device timeout"); | |
428 | break; | |
002eda13 HH |
429 | } |
430 | } | |
431 | break; | |
432 | ||
c9721438 | 433 | case OMAP_MUSB_VBUS_VALID: |
ca784be3 | 434 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
002eda13 HH |
435 | break; |
436 | ||
437 | default: | |
438 | break; | |
439 | } | |
440 | } | |
441 | ||
442 | static void omap2430_musb_disable(struct musb *musb) | |
443 | { | |
c9721438 KVA |
444 | struct device *dev = musb->controller; |
445 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
446 | ||
ca784be3 KVA |
447 | if (glue->status != OMAP_MUSB_UNKNOWN) |
448 | omap_control_usb_set_mode(glue->control_otghs, | |
449 | USB_MODE_DISCONNECT); | |
550a7375 FB |
450 | } |
451 | ||
743411b3 | 452 | static int omap2430_musb_exit(struct musb *musb) |
550a7375 | 453 | { |
19b9a83e | 454 | del_timer_sync(&musb_idle_timer); |
550a7375 | 455 | |
c20aebb9 | 456 | omap2430_low_level_exit(musb); |
c20aebb9 | 457 | |
550a7375 FB |
458 | return 0; |
459 | } | |
743411b3 | 460 | |
f7ec9437 | 461 | static const struct musb_platform_ops omap2430_ops = { |
743411b3 FB |
462 | .init = omap2430_musb_init, |
463 | .exit = omap2430_musb_exit, | |
464 | ||
743411b3 FB |
465 | .set_mode = omap2430_musb_set_mode, |
466 | .try_idle = omap2430_musb_try_idle, | |
467 | ||
468 | .set_vbus = omap2430_musb_set_vbus, | |
002eda13 HH |
469 | |
470 | .enable = omap2430_musb_enable, | |
471 | .disable = omap2430_musb_disable, | |
743411b3 | 472 | }; |
dc09886b FB |
473 | |
474 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); | |
475 | ||
41ac7b3a | 476 | static int omap2430_probe(struct platform_device *pdev) |
dc09886b FB |
477 | { |
478 | struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; | |
00a0b1d5 | 479 | struct omap_musb_board_data *data; |
dc09886b | 480 | struct platform_device *musb; |
a3cee12a | 481 | struct omap2430_glue *glue; |
00a0b1d5 KVA |
482 | struct device_node *np = pdev->dev.of_node; |
483 | struct musb_hdrc_config *config; | |
dc09886b FB |
484 | int ret = -ENOMEM; |
485 | ||
b1183c24 | 486 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
a3cee12a FB |
487 | if (!glue) { |
488 | dev_err(&pdev->dev, "failed to allocate glue context\n"); | |
489 | goto err0; | |
490 | } | |
491 | ||
2f771164 | 492 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
dc09886b FB |
493 | if (!musb) { |
494 | dev_err(&pdev->dev, "failed to allocate musb device\n"); | |
2f771164 | 495 | goto err0; |
dc09886b FB |
496 | } |
497 | ||
498 | musb->dev.parent = &pdev->dev; | |
499 | musb->dev.dma_mask = &omap2430_dmamask; | |
500 | musb->dev.coherent_dma_mask = omap2430_dmamask; | |
501 | ||
a3cee12a FB |
502 | glue->dev = &pdev->dev; |
503 | glue->musb = musb; | |
c9721438 | 504 | glue->status = OMAP_MUSB_UNKNOWN; |
a3cee12a | 505 | |
00a0b1d5 KVA |
506 | if (np) { |
507 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
508 | if (!pdata) { | |
509 | dev_err(&pdev->dev, | |
510 | "failed to allocate musb platfrom data\n"); | |
2f771164 | 511 | goto err2; |
00a0b1d5 KVA |
512 | } |
513 | ||
514 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
515 | if (!data) { | |
516 | dev_err(&pdev->dev, | |
8df4ce75 | 517 | "failed to allocate musb board data\n"); |
2f771164 | 518 | goto err2; |
00a0b1d5 KVA |
519 | } |
520 | ||
521 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); | |
b37457d8 | 522 | if (!config) { |
00a0b1d5 KVA |
523 | dev_err(&pdev->dev, |
524 | "failed to allocate musb hdrc config\n"); | |
2f771164 | 525 | goto err2; |
00a0b1d5 KVA |
526 | } |
527 | ||
528 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); | |
529 | of_property_read_u32(np, "interface_type", | |
530 | (u32 *)&data->interface_type); | |
531 | of_property_read_u32(np, "num_eps", (u32 *)&config->num_eps); | |
532 | of_property_read_u32(np, "ram_bits", (u32 *)&config->ram_bits); | |
533 | of_property_read_u32(np, "power", (u32 *)&pdata->power); | |
534 | config->multipoint = of_property_read_bool(np, "multipoint"); | |
ca784be3 KVA |
535 | pdata->has_mailbox = of_property_read_bool(np, |
536 | "ti,has-mailbox"); | |
00a0b1d5 KVA |
537 | |
538 | pdata->board_data = data; | |
539 | pdata->config = config; | |
540 | } | |
541 | ||
ca784be3 KVA |
542 | if (pdata->has_mailbox) { |
543 | glue->control_otghs = omap_get_control_dev(); | |
544 | if (IS_ERR(glue->control_otghs)) { | |
545 | dev_vdbg(&pdev->dev, "Failed to get control device\n"); | |
546 | return -ENODEV; | |
547 | } | |
548 | } else { | |
549 | glue->control_otghs = ERR_PTR(-ENODEV); | |
550 | } | |
f7ec9437 FB |
551 | pdata->platform_ops = &omap2430_ops; |
552 | ||
a3cee12a | 553 | platform_set_drvdata(pdev, glue); |
dc09886b | 554 | |
c9721438 KVA |
555 | /* |
556 | * REVISIT if we ever have two instances of the wrapper, we will be | |
557 | * in big trouble | |
558 | */ | |
559 | _glue = glue; | |
560 | ||
1e5acb8d KVA |
561 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
562 | ||
dc09886b FB |
563 | ret = platform_device_add_resources(musb, pdev->resource, |
564 | pdev->num_resources); | |
565 | if (ret) { | |
566 | dev_err(&pdev->dev, "failed to add resources\n"); | |
65b3d52d | 567 | goto err2; |
dc09886b FB |
568 | } |
569 | ||
570 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); | |
571 | if (ret) { | |
572 | dev_err(&pdev->dev, "failed to add platform_data\n"); | |
65b3d52d | 573 | goto err2; |
dc09886b FB |
574 | } |
575 | ||
3006dc8c KVA |
576 | pm_runtime_enable(&pdev->dev); |
577 | ||
dc09886b FB |
578 | ret = platform_device_add(musb); |
579 | if (ret) { | |
580 | dev_err(&pdev->dev, "failed to register musb device\n"); | |
65b3d52d | 581 | goto err2; |
dc09886b FB |
582 | } |
583 | ||
207b0e1f | 584 | return 0; |
03491761 | 585 | |
65b3d52d | 586 | err2: |
b1183c24 | 587 | platform_device_put(musb); |
a3cee12a | 588 | |
dc09886b FB |
589 | err0: |
590 | return ret; | |
591 | } | |
592 | ||
fb4e98ab | 593 | static int omap2430_remove(struct platform_device *pdev) |
dc09886b | 594 | { |
a3cee12a | 595 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
dc09886b | 596 | |
1e5acb8d | 597 | cancel_work_sync(&glue->omap_musb_mailbox_work); |
f039df58 | 598 | platform_device_unregister(glue->musb); |
dc09886b FB |
599 | |
600 | return 0; | |
601 | } | |
602 | ||
c20aebb9 | 603 | #ifdef CONFIG_PM |
c20aebb9 | 604 | |
7acc6197 | 605 | static int omap2430_runtime_suspend(struct device *dev) |
c20aebb9 FB |
606 | { |
607 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
608 | struct musb *musb = glue_to_musb(glue); | |
609 | ||
afb76df1 VZ |
610 | if (musb) { |
611 | musb->context.otg_interfsel = musb_readl(musb->mregs, | |
612 | OTG_INTERFSEL); | |
e25bec16 | 613 | |
afb76df1 VZ |
614 | omap2430_low_level_exit(musb); |
615 | usb_phy_set_suspend(musb->xceiv, 1); | |
616 | } | |
c20aebb9 FB |
617 | |
618 | return 0; | |
619 | } | |
620 | ||
7acc6197 | 621 | static int omap2430_runtime_resume(struct device *dev) |
c20aebb9 FB |
622 | { |
623 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
624 | struct musb *musb = glue_to_musb(glue); | |
c20aebb9 | 625 | |
afb76df1 VZ |
626 | if (musb) { |
627 | omap2430_low_level_init(musb); | |
628 | musb_writel(musb->mregs, OTG_INTERFSEL, | |
629 | musb->context.otg_interfsel); | |
e25bec16 | 630 | |
afb76df1 VZ |
631 | usb_phy_set_suspend(musb->xceiv, 0); |
632 | } | |
c20aebb9 FB |
633 | |
634 | return 0; | |
635 | } | |
636 | ||
637 | static struct dev_pm_ops omap2430_pm_ops = { | |
7acc6197 HH |
638 | .runtime_suspend = omap2430_runtime_suspend, |
639 | .runtime_resume = omap2430_runtime_resume, | |
c20aebb9 FB |
640 | }; |
641 | ||
642 | #define DEV_PM_OPS (&omap2430_pm_ops) | |
643 | #else | |
644 | #define DEV_PM_OPS NULL | |
645 | #endif | |
646 | ||
00a0b1d5 KVA |
647 | #ifdef CONFIG_OF |
648 | static const struct of_device_id omap2430_id_table[] = { | |
649 | { | |
650 | .compatible = "ti,omap4-musb" | |
651 | }, | |
652 | { | |
653 | .compatible = "ti,omap3-musb" | |
654 | }, | |
655 | {}, | |
656 | }; | |
657 | MODULE_DEVICE_TABLE(of, omap2430_id_table); | |
658 | #endif | |
659 | ||
dc09886b | 660 | static struct platform_driver omap2430_driver = { |
e9e8c85e | 661 | .probe = omap2430_probe, |
7690417d | 662 | .remove = omap2430_remove, |
dc09886b FB |
663 | .driver = { |
664 | .name = "musb-omap2430", | |
c20aebb9 | 665 | .pm = DEV_PM_OPS, |
00a0b1d5 | 666 | .of_match_table = of_match_ptr(omap2430_id_table), |
dc09886b FB |
667 | }, |
668 | }; | |
669 | ||
670 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); | |
671 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
672 | MODULE_LICENSE("GPL v2"); | |
673 | ||
674 | static int __init omap2430_init(void) | |
675 | { | |
e9e8c85e | 676 | return platform_driver_register(&omap2430_driver); |
dc09886b | 677 | } |
c9721438 | 678 | subsys_initcall(omap2430_init); |
dc09886b FB |
679 | |
680 | static void __exit omap2430_exit(void) | |
681 | { | |
682 | platform_driver_unregister(&omap2430_driver); | |
683 | } | |
684 | module_exit(omap2430_exit); |