Commit | Line | Data |
---|---|---|
5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
550a7375 FB |
2 | /* |
3 | * Copyright (C) 2005-2007 by Texas Instruments | |
4 | * Some code has been taken from tusb6010.c | |
5 | * Copyrights for that are attributable to: | |
6 | * Copyright (C) 2006 Nokia Corporation | |
550a7375 FB |
7 | * Tony Lindgren <tony@atomide.com> |
8 | * | |
9 | * This file is part of the Inventra Controller Driver for Linux. | |
550a7375 FB |
10 | */ |
11 | #include <linux/module.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/sched.h> | |
550a7375 FB |
14 | #include <linux/init.h> |
15 | #include <linux/list.h> | |
550a7375 | 16 | #include <linux/io.h> |
00a0b1d5 | 17 | #include <linux/of.h> |
dc09886b FB |
18 | #include <linux/platform_device.h> |
19 | #include <linux/dma-mapping.h> | |
207b0e1f HH |
20 | #include <linux/pm_runtime.h> |
21 | #include <linux/err.h> | |
12a19b5f | 22 | #include <linux/delay.h> |
8055555f | 23 | #include <linux/usb/musb.h> |
14da699b | 24 | #include <linux/phy/omap_control_phy.h> |
8934d3e4 | 25 | #include <linux/of_platform.h> |
550a7375 | 26 | |
550a7375 FB |
27 | #include "musb_core.h" |
28 | #include "omap2430.h" | |
29 | ||
a3cee12a FB |
30 | struct omap2430_glue { |
31 | struct device *dev; | |
32 | struct platform_device *musb; | |
8055555f | 33 | enum musb_vbus_id_status status; |
1e5acb8d | 34 | struct work_struct omap_musb_mailbox_work; |
ca784be3 | 35 | struct device *control_otghs; |
62d472d8 TL |
36 | unsigned int is_runtime_suspended:1; |
37 | unsigned int needs_resume:1; | |
a3cee12a | 38 | }; |
c20aebb9 | 39 | #define glue_to_musb(g) platform_get_drvdata(g->musb) |
a3cee12a | 40 | |
4b58ed11 | 41 | static struct omap2430_glue *_glue; |
c9721438 | 42 | |
c20aebb9 FB |
43 | static inline void omap2430_low_level_exit(struct musb *musb) |
44 | { | |
45 | u32 l; | |
46 | ||
47 | /* in any role */ | |
48 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); | |
49 | l |= ENABLEFORCE; /* enable MSTANDBY */ | |
50 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
c20aebb9 FB |
51 | } |
52 | ||
53 | static inline void omap2430_low_level_init(struct musb *musb) | |
54 | { | |
55 | u32 l; | |
56 | ||
c20aebb9 FB |
57 | l = musb_readl(musb->mregs, OTG_FORCESTDBY); |
58 | l &= ~ENABLEFORCE; /* disable MSTANDBY */ | |
59 | musb_writel(musb->mregs, OTG_FORCESTDBY, l); | |
60 | } | |
61 | ||
12b7db2b | 62 | static int omap2430_musb_mailbox(enum musb_vbus_id_status status) |
594632ef | 63 | { |
c9721438 | 64 | struct omap2430_glue *glue = _glue; |
712d8efa | 65 | |
f8c4b0e7 AK |
66 | if (!glue) { |
67 | pr_err("%s: musb core is not yet initialized\n", __func__); | |
12b7db2b | 68 | return -EPROBE_DEFER; |
f8c4b0e7 AK |
69 | } |
70 | glue->status = status; | |
71 | ||
72 | if (!glue_to_musb(glue)) { | |
80ab72e1 | 73 | pr_err("%s: musb core is not yet ready\n", __func__); |
12b7db2b | 74 | return -EPROBE_DEFER; |
c9721438 | 75 | } |
712d8efa | 76 | |
c9721438 | 77 | schedule_work(&glue->omap_musb_mailbox_work); |
12b7db2b TL |
78 | |
79 | return 0; | |
712d8efa VP |
80 | } |
81 | ||
98827105 TL |
82 | /* |
83 | * HDRC controls CPEN, but beware current surges during device connect. | |
84 | * They can trigger transient overcurrent conditions that must be ignored. | |
85 | * | |
86 | * Note that we're skipping A_WAIT_VFALL -> A_IDLE and jumping right to B_IDLE | |
87 | * as set by musb_set_peripheral(). | |
88 | */ | |
c9721438 | 89 | static void omap_musb_set_mailbox(struct omap2430_glue *glue) |
712d8efa | 90 | { |
1e5acb8d | 91 | struct musb *musb = glue_to_musb(glue); |
98827105 | 92 | int error; |
594632ef | 93 | |
ae909fe4 | 94 | pm_runtime_get_sync(musb->controller); |
98827105 TL |
95 | |
96 | dev_dbg(musb->controller, "VBUS %s, devctl %02x\n", | |
97 | usb_otg_state_string(musb->xceiv->otg->state), | |
98 | musb_readb(musb->mregs, MUSB_DEVCTL)); | |
99 | ||
c9721438 | 100 | switch (glue->status) { |
8055555f | 101 | case MUSB_ID_GROUND: |
ae909fe4 | 102 | dev_dbg(musb->controller, "ID GND\n"); |
15f1122f | 103 | switch (musb->xceiv->otg->state) { |
98827105 TL |
104 | case OTG_STATE_A_IDLE: |
105 | error = musb_set_host(musb); | |
106 | if (error) | |
107 | break; | |
108 | musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; | |
df561f66 | 109 | fallthrough; |
15f1122f TL |
110 | case OTG_STATE_A_WAIT_VRISE: |
111 | case OTG_STATE_A_WAIT_BCON: | |
112 | case OTG_STATE_A_HOST: | |
15f1122f TL |
113 | /* |
114 | * On multiple ID ground interrupts just keep enabling | |
115 | * VBUS. At least cpcap VBUS shuts down otherwise. | |
116 | */ | |
98827105 | 117 | otg_set_vbus(musb->xceiv->otg, 1); |
15f1122f TL |
118 | break; |
119 | default: | |
120 | musb->xceiv->otg->state = OTG_STATE_A_IDLE; | |
121 | musb->xceiv->last_event = USB_EVENT_ID; | |
122 | if (musb->gadget_driver) { | |
123 | omap_control_usb_set_mode(glue->control_otghs, | |
124 | USB_MODE_HOST); | |
98827105 | 125 | otg_set_vbus(musb->xceiv->otg, 1); |
15f1122f TL |
126 | } |
127 | break; | |
594632ef HH |
128 | } |
129 | break; | |
130 | ||
8055555f | 131 | case MUSB_VBUS_VALID: |
ae909fe4 | 132 | dev_dbg(musb->controller, "VBUS Connect\n"); |
594632ef | 133 | |
e47d9254 | 134 | musb->xceiv->otg->state = OTG_STATE_B_IDLE; |
c9721438 | 135 | musb->xceiv->last_event = USB_EVENT_VBUS; |
ca784be3 | 136 | omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); |
594632ef HH |
137 | break; |
138 | ||
8055555f TL |
139 | case MUSB_ID_FLOAT: |
140 | case MUSB_VBUS_OFF: | |
ae909fe4 | 141 | dev_dbg(musb->controller, "VBUS Disconnect\n"); |
594632ef | 142 | |
c9721438 | 143 | musb->xceiv->last_event = USB_EVENT_NONE; |
98827105 TL |
144 | musb_set_peripheral(musb); |
145 | otg_set_vbus(musb->xceiv->otg, 0); | |
ca784be3 KVA |
146 | omap_control_usb_set_mode(glue->control_otghs, |
147 | USB_MODE_DISCONNECT); | |
594632ef HH |
148 | break; |
149 | default: | |
ae909fe4 | 150 | dev_dbg(musb->controller, "ID float\n"); |
594632ef | 151 | } |
ae909fe4 TL |
152 | pm_runtime_mark_last_busy(musb->controller); |
153 | pm_runtime_put_autosuspend(musb->controller); | |
6fa7178c PR |
154 | atomic_notifier_call_chain(&musb->xceiv->notifier, |
155 | musb->xceiv->last_event, NULL); | |
594632ef HH |
156 | } |
157 | ||
c9721438 KVA |
158 | |
159 | static void omap_musb_mailbox_work(struct work_struct *mailbox_work) | |
160 | { | |
161 | struct omap2430_glue *glue = container_of(mailbox_work, | |
162 | struct omap2430_glue, omap_musb_mailbox_work); | |
8b2bc2c9 | 163 | |
c9721438 KVA |
164 | omap_musb_set_mailbox(glue); |
165 | } | |
166 | ||
baef653a PDS |
167 | static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) |
168 | { | |
169 | unsigned long flags; | |
170 | irqreturn_t retval = IRQ_NONE; | |
171 | struct musb *musb = __hci; | |
172 | ||
173 | spin_lock_irqsave(&musb->lock, flags); | |
174 | ||
175 | musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); | |
176 | musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); | |
177 | musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); | |
178 | ||
179 | if (musb->int_usb || musb->int_tx || musb->int_rx) | |
180 | retval = musb_interrupt(musb); | |
181 | ||
182 | spin_unlock_irqrestore(&musb->lock, flags); | |
183 | ||
184 | return retval; | |
185 | } | |
186 | ||
743411b3 | 187 | static int omap2430_musb_init(struct musb *musb) |
550a7375 | 188 | { |
ad579699 S |
189 | u32 l; |
190 | int status = 0; | |
ea65df57 | 191 | struct device *dev = musb->controller; |
c1a7d67c | 192 | struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); |
ea65df57 | 193 | struct omap_musb_board_data *data = plat->board_data; |
550a7375 | 194 | |
84e250ff DB |
195 | /* We require some kind of external transceiver, hooked |
196 | * up through ULPI. TWL4030-family PMICs include one, | |
197 | * which needs a driver, drivers aren't always needed. | |
198 | */ | |
5ee1787e JH |
199 | musb->phy = devm_phy_get(dev->parent, "usb2-phy"); |
200 | ||
201 | /* We can't totally remove musb->xceiv as of now because | |
202 | * musb core uses xceiv.state and xceiv.otg. Once we have | |
203 | * a separate state machine to handle otg, these can be moved | |
204 | * out of xceiv and then we can start using the generic PHY | |
205 | * framework | |
206 | */ | |
207 | musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, "usb-phy", 0); | |
b16604f2 | 208 | |
a90199bb FB |
209 | if (IS_ERR(musb->xceiv)) { |
210 | status = PTR_ERR(musb->xceiv); | |
211 | ||
212 | if (status == -ENXIO) | |
213 | return status; | |
214 | ||
dc66ba8d | 215 | dev_dbg(dev, "HS USB OTG: no transceiver configured\n"); |
25736e0c | 216 | return -EPROBE_DEFER; |
84e250ff DB |
217 | } |
218 | ||
3e3101d5 | 219 | if (IS_ERR(musb->phy)) { |
71127a79 | 220 | dev_err(dev, "HS USB OTG: no PHY configured\n"); |
3e3101d5 KVA |
221 | return PTR_ERR(musb->phy); |
222 | } | |
baef653a | 223 | musb->isr = omap2430_musb_interrupt; |
a83e17d0 | 224 | phy_init(musb->phy); |
d8e5f0ec | 225 | phy_power_on(musb->phy); |
baef653a | 226 | |
8573e6a6 | 227 | l = musb_readl(musb->mregs, OTG_INTERFSEL); |
de2e1b0c MM |
228 | |
229 | if (data->interface_type == MUSB_INTERFACE_UTMI) { | |
230 | /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ | |
231 | l &= ~ULPI_12PIN; /* Disable ULPI */ | |
232 | l |= UTMI_8BIT; /* Enable UTMI */ | |
233 | } else { | |
234 | l |= ULPI_12PIN; | |
235 | } | |
236 | ||
8573e6a6 | 237 | musb_writel(musb->mregs, OTG_INTERFSEL, l); |
550a7375 | 238 | |
71127a79 | 239 | dev_dbg(dev, "HS USB OTG: revision 0x%x, sysconfig 0x%02x, " |
550a7375 | 240 | "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", |
8573e6a6 FB |
241 | musb_readl(musb->mregs, OTG_REVISION), |
242 | musb_readl(musb->mregs, OTG_SYSCONFIG), | |
243 | musb_readl(musb->mregs, OTG_SYSSTATUS), | |
244 | musb_readl(musb->mregs, OTG_INTERFSEL), | |
245 | musb_readl(musb->mregs, OTG_SIMENABLE)); | |
550a7375 | 246 | |
550a7375 FB |
247 | return 0; |
248 | } | |
249 | ||
002eda13 HH |
250 | static void omap2430_musb_enable(struct musb *musb) |
251 | { | |
002eda13 | 252 | struct device *dev = musb->controller; |
c9721438 | 253 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); |
a83e17d0 | 254 | |
8b359cbc TL |
255 | if (glue->status == MUSB_UNKNOWN) |
256 | glue->status = MUSB_VBUS_OFF; | |
257 | omap_musb_set_mailbox(glue); | |
002eda13 HH |
258 | } |
259 | ||
260 | static void omap2430_musb_disable(struct musb *musb) | |
261 | { | |
c9721438 KVA |
262 | struct device *dev = musb->controller; |
263 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
264 | ||
8055555f | 265 | if (glue->status != MUSB_UNKNOWN) |
ca784be3 KVA |
266 | omap_control_usb_set_mode(glue->control_otghs, |
267 | USB_MODE_DISCONNECT); | |
550a7375 FB |
268 | } |
269 | ||
743411b3 | 270 | static int omap2430_musb_exit(struct musb *musb) |
550a7375 | 271 | { |
a83e17d0 TL |
272 | struct device *dev = musb->controller; |
273 | struct omap2430_glue *glue = dev_get_drvdata(dev->parent); | |
550a7375 | 274 | |
c20aebb9 | 275 | omap2430_low_level_exit(musb); |
d8e5f0ec | 276 | phy_power_off(musb->phy); |
3e3101d5 | 277 | phy_exit(musb->phy); |
a83e17d0 TL |
278 | musb->phy = NULL; |
279 | cancel_work_sync(&glue->omap_musb_mailbox_work); | |
c20aebb9 | 280 | |
550a7375 FB |
281 | return 0; |
282 | } | |
743411b3 | 283 | |
f7ec9437 | 284 | static const struct musb_platform_ops omap2430_ops = { |
f8e9f34f | 285 | .quirks = MUSB_DMA_INVENTRA, |
7f6283ed TL |
286 | #ifdef CONFIG_USB_INVENTRA_DMA |
287 | .dma_init = musbhs_dma_controller_create, | |
288 | .dma_exit = musbhs_dma_controller_destroy, | |
289 | #endif | |
743411b3 FB |
290 | .init = omap2430_musb_init, |
291 | .exit = omap2430_musb_exit, | |
292 | ||
002eda13 HH |
293 | .enable = omap2430_musb_enable, |
294 | .disable = omap2430_musb_disable, | |
8055555f TL |
295 | |
296 | .phy_callback = omap2430_musb_mailbox, | |
743411b3 | 297 | }; |
dc09886b FB |
298 | |
299 | static u64 omap2430_dmamask = DMA_BIT_MASK(32); | |
300 | ||
41ac7b3a | 301 | static int omap2430_probe(struct platform_device *pdev) |
dc09886b | 302 | { |
c1f01be4 | 303 | struct resource musb_resources[3]; |
c1a7d67c | 304 | struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); |
00a0b1d5 | 305 | struct omap_musb_board_data *data; |
dc09886b | 306 | struct platform_device *musb; |
a3cee12a | 307 | struct omap2430_glue *glue; |
00a0b1d5 KVA |
308 | struct device_node *np = pdev->dev.of_node; |
309 | struct musb_hdrc_config *config; | |
5ee1787e JH |
310 | struct device_node *control_node; |
311 | struct platform_device *control_pdev; | |
606bf4d5 | 312 | int ret = -ENOMEM, val; |
dc09886b | 313 | |
5ee1787e JH |
314 | if (!np) |
315 | return -ENODEV; | |
316 | ||
b1183c24 | 317 | glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); |
af1bdfc9 | 318 | if (!glue) |
a3cee12a | 319 | goto err0; |
a3cee12a | 320 | |
2f771164 | 321 | musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); |
dc09886b FB |
322 | if (!musb) { |
323 | dev_err(&pdev->dev, "failed to allocate musb device\n"); | |
2f771164 | 324 | goto err0; |
dc09886b FB |
325 | } |
326 | ||
327 | musb->dev.parent = &pdev->dev; | |
328 | musb->dev.dma_mask = &omap2430_dmamask; | |
329 | musb->dev.coherent_dma_mask = omap2430_dmamask; | |
330 | ||
a3cee12a FB |
331 | glue->dev = &pdev->dev; |
332 | glue->musb = musb; | |
8055555f | 333 | glue->status = MUSB_UNKNOWN; |
8934d3e4 | 334 | glue->control_otghs = ERR_PTR(-ENODEV); |
a3cee12a | 335 | |
5ee1787e JH |
336 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
337 | if (!pdata) | |
338 | goto err2; | |
339 | ||
340 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
341 | if (!data) | |
342 | goto err2; | |
343 | ||
344 | config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); | |
345 | if (!config) | |
346 | goto err2; | |
347 | ||
348 | of_property_read_u32(np, "mode", (u32 *)&pdata->mode); | |
349 | of_property_read_u32(np, "interface-type", | |
350 | (u32 *)&data->interface_type); | |
351 | of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); | |
352 | of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); | |
353 | of_property_read_u32(np, "power", (u32 *)&pdata->power); | |
354 | ||
355 | ret = of_property_read_u32(np, "multipoint", &val); | |
356 | if (!ret && val) | |
357 | config->multipoint = true; | |
358 | ||
359 | pdata->board_data = data; | |
360 | pdata->config = config; | |
361 | ||
362 | control_node = of_parse_phandle(np, "ctrl-module", 0); | |
363 | if (control_node) { | |
364 | control_pdev = of_find_device_by_node(control_node); | |
365 | if (!control_pdev) { | |
366 | dev_err(&pdev->dev, "Failed to get control device\n"); | |
367 | ret = -EINVAL; | |
2f771164 | 368 | goto err2; |
ca784be3 | 369 | } |
5ee1787e | 370 | glue->control_otghs = &control_pdev->dev; |
ca784be3 | 371 | } |
5ee1787e | 372 | |
f7ec9437 FB |
373 | pdata->platform_ops = &omap2430_ops; |
374 | ||
a3cee12a | 375 | platform_set_drvdata(pdev, glue); |
dc09886b | 376 | |
c9721438 KVA |
377 | /* |
378 | * REVISIT if we ever have two instances of the wrapper, we will be | |
379 | * in big trouble | |
380 | */ | |
381 | _glue = glue; | |
382 | ||
1e5acb8d KVA |
383 | INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); |
384 | ||
3a0ddc71 | 385 | memset(musb_resources, 0x00, sizeof(*musb_resources) * |
09fc7d22 FB |
386 | ARRAY_SIZE(musb_resources)); |
387 | ||
388 | musb_resources[0].name = pdev->resource[0].name; | |
389 | musb_resources[0].start = pdev->resource[0].start; | |
390 | musb_resources[0].end = pdev->resource[0].end; | |
391 | musb_resources[0].flags = pdev->resource[0].flags; | |
392 | ||
393 | musb_resources[1].name = pdev->resource[1].name; | |
394 | musb_resources[1].start = pdev->resource[1].start; | |
395 | musb_resources[1].end = pdev->resource[1].end; | |
396 | musb_resources[1].flags = pdev->resource[1].flags; | |
397 | ||
c1f01be4 KVA |
398 | musb_resources[2].name = pdev->resource[2].name; |
399 | musb_resources[2].start = pdev->resource[2].start; | |
400 | musb_resources[2].end = pdev->resource[2].end; | |
401 | musb_resources[2].flags = pdev->resource[2].flags; | |
402 | ||
09fc7d22 FB |
403 | ret = platform_device_add_resources(musb, musb_resources, |
404 | ARRAY_SIZE(musb_resources)); | |
dc09886b FB |
405 | if (ret) { |
406 | dev_err(&pdev->dev, "failed to add resources\n"); | |
65b3d52d | 407 | goto err2; |
dc09886b FB |
408 | } |
409 | ||
410 | ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); | |
411 | if (ret) { | |
412 | dev_err(&pdev->dev, "failed to add platform_data\n"); | |
65b3d52d | 413 | goto err2; |
dc09886b FB |
414 | } |
415 | ||
87326e85 | 416 | pm_runtime_enable(glue->dev); |
3006dc8c | 417 | |
dc09886b FB |
418 | ret = platform_device_add(musb); |
419 | if (ret) { | |
420 | dev_err(&pdev->dev, "failed to register musb device\n"); | |
536d599d | 421 | goto err3; |
dc09886b FB |
422 | } |
423 | ||
207b0e1f | 424 | return 0; |
03491761 | 425 | |
536d599d TL |
426 | err3: |
427 | pm_runtime_disable(glue->dev); | |
428 | ||
65b3d52d | 429 | err2: |
b1183c24 | 430 | platform_device_put(musb); |
a3cee12a | 431 | |
dc09886b FB |
432 | err0: |
433 | return ret; | |
434 | } | |
435 | ||
fb4e98ab | 436 | static int omap2430_remove(struct platform_device *pdev) |
dc09886b | 437 | { |
21f77bee | 438 | struct omap2430_glue *glue = platform_get_drvdata(pdev); |
dc09886b | 439 | |
f039df58 | 440 | platform_device_unregister(glue->musb); |
03e43528 | 441 | pm_runtime_disable(glue->dev); |
dc09886b FB |
442 | |
443 | return 0; | |
444 | } | |
445 | ||
c20aebb9 | 446 | #ifdef CONFIG_PM |
c20aebb9 | 447 | |
7acc6197 | 448 | static int omap2430_runtime_suspend(struct device *dev) |
c20aebb9 FB |
449 | { |
450 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
451 | struct musb *musb = glue_to_musb(glue); | |
452 | ||
a83e17d0 TL |
453 | if (!musb) |
454 | return 0; | |
e25bec16 | 455 | |
a83e17d0 TL |
456 | musb->context.otg_interfsel = musb_readl(musb->mregs, |
457 | OTG_INTERFSEL); | |
458 | ||
459 | omap2430_low_level_exit(musb); | |
c20aebb9 | 460 | |
10ac7e77 TL |
461 | phy_power_off(musb->phy); |
462 | phy_exit(musb->phy); | |
463 | ||
62d472d8 TL |
464 | glue->is_runtime_suspended = 1; |
465 | ||
c20aebb9 FB |
466 | return 0; |
467 | } | |
468 | ||
7acc6197 | 469 | static int omap2430_runtime_resume(struct device *dev) |
c20aebb9 FB |
470 | { |
471 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
472 | struct musb *musb = glue_to_musb(glue); | |
c20aebb9 | 473 | |
8f2279d5 | 474 | if (!musb) |
a83e17d0 | 475 | return 0; |
8f2279d5 | 476 | |
10ac7e77 TL |
477 | phy_init(musb->phy); |
478 | phy_power_on(musb->phy); | |
479 | ||
8f2279d5 TL |
480 | omap2430_low_level_init(musb); |
481 | musb_writel(musb->mregs, OTG_INTERFSEL, | |
482 | musb->context.otg_interfsel); | |
c20aebb9 | 483 | |
ce3ab650 TL |
484 | /* Wait for musb to get oriented. Otherwise we can get babble */ |
485 | usleep_range(200000, 250000); | |
486 | ||
62d472d8 TL |
487 | glue->is_runtime_suspended = 0; |
488 | ||
c20aebb9 FB |
489 | return 0; |
490 | } | |
491 | ||
62d472d8 TL |
492 | static int omap2430_suspend(struct device *dev) |
493 | { | |
494 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
495 | ||
496 | if (glue->is_runtime_suspended) | |
497 | return 0; | |
498 | ||
499 | glue->needs_resume = 1; | |
500 | ||
501 | return omap2430_runtime_suspend(dev); | |
502 | } | |
503 | ||
504 | static int omap2430_resume(struct device *dev) | |
505 | { | |
506 | struct omap2430_glue *glue = dev_get_drvdata(dev); | |
507 | ||
508 | if (!glue->needs_resume) | |
509 | return 0; | |
510 | ||
511 | glue->needs_resume = 0; | |
512 | ||
513 | return omap2430_runtime_resume(dev); | |
514 | } | |
515 | ||
c0927fea | 516 | static const struct dev_pm_ops omap2430_pm_ops = { |
7acc6197 HH |
517 | .runtime_suspend = omap2430_runtime_suspend, |
518 | .runtime_resume = omap2430_runtime_resume, | |
62d472d8 TL |
519 | .suspend = omap2430_suspend, |
520 | .resume = omap2430_resume, | |
c20aebb9 FB |
521 | }; |
522 | ||
523 | #define DEV_PM_OPS (&omap2430_pm_ops) | |
524 | #else | |
525 | #define DEV_PM_OPS NULL | |
526 | #endif | |
527 | ||
00a0b1d5 KVA |
528 | #ifdef CONFIG_OF |
529 | static const struct of_device_id omap2430_id_table[] = { | |
530 | { | |
531 | .compatible = "ti,omap4-musb" | |
532 | }, | |
533 | { | |
534 | .compatible = "ti,omap3-musb" | |
535 | }, | |
536 | {}, | |
537 | }; | |
538 | MODULE_DEVICE_TABLE(of, omap2430_id_table); | |
539 | #endif | |
540 | ||
dc09886b | 541 | static struct platform_driver omap2430_driver = { |
e9e8c85e | 542 | .probe = omap2430_probe, |
7690417d | 543 | .remove = omap2430_remove, |
dc09886b FB |
544 | .driver = { |
545 | .name = "musb-omap2430", | |
c20aebb9 | 546 | .pm = DEV_PM_OPS, |
00a0b1d5 | 547 | .of_match_table = of_match_ptr(omap2430_id_table), |
dc09886b FB |
548 | }, |
549 | }; | |
550 | ||
aec373c1 TL |
551 | module_platform_driver(omap2430_driver); |
552 | ||
dc09886b FB |
553 | MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); |
554 | MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); | |
555 | MODULE_LICENSE("GPL v2"); |