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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2012 Freescale Semiconductor, Inc.
4 */
5
6#include <linux/module.h>
7#include <linux/of_platform.h>
8#include <linux/err.h>
9#include <linux/io.h>
10#include <linux/delay.h>
11
12#include "ci_hdrc_imx.h"
13
14#define MX25_USB_PHY_CTRL_OFFSET 0x08
15#define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
16
17#define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0)
18#define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0)
19#define MX25_EHCI_INTERFACE_MASK (0xf)
20
21#define MX25_OTG_SIC_SHIFT 29
22#define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT)
23#define MX25_OTG_PM_BIT BIT(24)
24#define MX25_OTG_PP_BIT BIT(11)
25#define MX25_OTG_OCPOL_BIT BIT(3)
26
27#define MX25_H1_SIC_SHIFT 21
28#define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT)
29#define MX25_H1_PP_BIT BIT(18)
30#define MX25_H1_PM_BIT BIT(16)
31#define MX25_H1_IPPUE_UP_BIT BIT(7)
32#define MX25_H1_IPPUE_DOWN_BIT BIT(6)
33#define MX25_H1_TLL_BIT BIT(5)
34#define MX25_H1_USBTE_BIT BIT(4)
35#define MX25_H1_OCPOL_BIT BIT(2)
36
37#define MX27_H1_PM_BIT BIT(8)
38#define MX27_H2_PM_BIT BIT(16)
39#define MX27_OTG_PM_BIT BIT(24)
40
41#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08
42#define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c
43#define MX53_USB_CTRL_1_OFFSET 0x10
44#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK (0x11 << 2)
45#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI BIT(2)
46#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK (0x11 << 6)
47#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
48#define MX53_USB_UH2_CTRL_OFFSET 0x14
49#define MX53_USB_UH3_CTRL_OFFSET 0x18
50#define MX53_USB_CLKONOFF_CTRL_OFFSET 0x24
51#define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21)
52#define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22)
53#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
54#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
55#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
56#define MX53_USB_CTRL_1_UH2_ULPI_EN BIT(26)
57#define MX53_USB_CTRL_1_UH3_ULPI_EN BIT(27)
58#define MX53_USB_UHx_CTRL_WAKE_UP_EN BIT(7)
59#define MX53_USB_UHx_CTRL_ULPI_INT_EN BIT(8)
60#define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3
61#define MX53_USB_PLL_DIV_24_MHZ 0x01
62
63#define MX6_BM_NON_BURST_SETTING BIT(1)
64#define MX6_BM_OVER_CUR_DIS BIT(7)
65#define MX6_BM_OVER_CUR_POLARITY BIT(8)
66#define MX6_BM_WAKEUP_ENABLE BIT(10)
67#define MX6_BM_ID_WAKEUP BIT(16)
68#define MX6_BM_VBUS_WAKEUP BIT(17)
69#define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
70#define MX6_BM_WAKEUP_INTR BIT(31)
71#define MX6_USB_OTG1_PHY_CTRL 0x18
72/* For imx6dql, it is host-only controller, for later imx6, it is otg's */
73#define MX6_USB_OTG2_PHY_CTRL 0x1c
74#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
75#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
76#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
77#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
78#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
79
80#define VF610_OVER_CUR_DIS BIT(7)
81
82#define MX7D_USBNC_USB_CTRL2 0x4
83#define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3
84#define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0)
85#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0)
86#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
87#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
88#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
89
90struct usbmisc_ops {
91 /* It's called once when probe a usb device */
92 int (*init)(struct imx_usbmisc_data *data);
93 /* It's called once after adding a usb device */
94 int (*post)(struct imx_usbmisc_data *data);
95 /* It's called when we need to enable/disable usb wakeup */
96 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
97};
98
99struct imx_usbmisc {
100 void __iomem *base;
101 spinlock_t lock;
102 const struct usbmisc_ops *ops;
103};
104
105static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
106
107static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
108{
109 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
110 unsigned long flags;
111 u32 val = 0;
112
113 if (data->index > 1)
114 return -EINVAL;
115
116 spin_lock_irqsave(&usbmisc->lock, flags);
117 switch (data->index) {
118 case 0:
119 val = readl(usbmisc->base);
120 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
121 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
122 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
123 writel(val, usbmisc->base);
124 break;
125 case 1:
126 val = readl(usbmisc->base);
127 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
128 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
129 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
130 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
131
132 writel(val, usbmisc->base);
133
134 break;
135 }
136 spin_unlock_irqrestore(&usbmisc->lock, flags);
137
138 return 0;
139}
140
141static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
142{
143 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
144 void __iomem *reg;
145 unsigned long flags;
146 u32 val;
147
148 if (data->index > 2)
149 return -EINVAL;
150
151 if (data->index)
152 return 0;
153
154 spin_lock_irqsave(&usbmisc->lock, flags);
155 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
156 val = readl(reg);
157
158 if (data->evdo)
159 val |= MX25_BM_EXTERNAL_VBUS_DIVIDER;
160 else
161 val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER;
162
163 writel(val, reg);
164 spin_unlock_irqrestore(&usbmisc->lock, flags);
165 usleep_range(5000, 10000); /* needed to stabilize voltage */
166
167 return 0;
168}
169
170static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
171{
172 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
173 unsigned long flags;
174 u32 val;
175
176 switch (data->index) {
177 case 0:
178 val = MX27_OTG_PM_BIT;
179 break;
180 case 1:
181 val = MX27_H1_PM_BIT;
182 break;
183 case 2:
184 val = MX27_H2_PM_BIT;
185 break;
186 default:
187 return -EINVAL;
188 }
189
190 spin_lock_irqsave(&usbmisc->lock, flags);
191 if (data->disable_oc)
192 val = readl(usbmisc->base) | val;
193 else
194 val = readl(usbmisc->base) & ~val;
195 writel(val, usbmisc->base);
196 spin_unlock_irqrestore(&usbmisc->lock, flags);
197
198 return 0;
199}
200
201static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
202{
203 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
204 void __iomem *reg = NULL;
205 unsigned long flags;
206 u32 val = 0;
207
208 if (data->index > 3)
209 return -EINVAL;
210
211 /* Select a 24 MHz reference clock for the PHY */
212 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
213 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
214 val |= MX53_USB_PLL_DIV_24_MHZ;
215 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
216
217 spin_lock_irqsave(&usbmisc->lock, flags);
218
219 switch (data->index) {
220 case 0:
221 if (data->disable_oc) {
222 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
223 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
224 writel(val, reg);
225 }
226 break;
227 case 1:
228 if (data->disable_oc) {
229 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
230 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
231 writel(val, reg);
232 }
233 break;
234 case 2:
235 if (data->ulpi) {
236 /* set USBH2 into ULPI-mode. */
237 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
238 val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
239 /* select ULPI clock */
240 val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
241 val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
242 writel(val, reg);
243 /* Set interrupt wake up enable */
244 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
245 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
246 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
247 writel(val, reg);
248 if (is_imx53_usbmisc(data)) {
249 /* Disable internal 60Mhz clock */
250 reg = usbmisc->base +
251 MX53_USB_CLKONOFF_CTRL_OFFSET;
252 val = readl(reg) |
253 MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
254 writel(val, reg);
255 }
256
257 }
258 if (data->disable_oc) {
259 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
260 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
261 writel(val, reg);
262 }
263 break;
264 case 3:
265 if (data->ulpi) {
266 /* set USBH3 into ULPI-mode. */
267 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
268 val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
269 /* select ULPI clock */
270 val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
271 val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
272 writel(val, reg);
273 /* Set interrupt wake up enable */
274 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
275 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
276 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
277 writel(val, reg);
278
279 if (is_imx53_usbmisc(data)) {
280 /* Disable internal 60Mhz clock */
281 reg = usbmisc->base +
282 MX53_USB_CLKONOFF_CTRL_OFFSET;
283 val = readl(reg) |
284 MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
285 writel(val, reg);
286 }
287 }
288 if (data->disable_oc) {
289 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
290 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
291 writel(val, reg);
292 }
293 break;
294 }
295
296 spin_unlock_irqrestore(&usbmisc->lock, flags);
297
298 return 0;
299}
300
301static int usbmisc_imx6q_set_wakeup
302 (struct imx_usbmisc_data *data, bool enabled)
303{
304 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
305 unsigned long flags;
306 u32 val;
307 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
308 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
309 int ret = 0;
310
311 if (data->index > 3)
312 return -EINVAL;
313
314 spin_lock_irqsave(&usbmisc->lock, flags);
315 val = readl(usbmisc->base + data->index * 4);
316 if (enabled) {
317 val |= wakeup_setting;
318 } else {
319 if (val & MX6_BM_WAKEUP_INTR)
320 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
321 val &= ~wakeup_setting;
322 }
323 writel(val, usbmisc->base + data->index * 4);
324 spin_unlock_irqrestore(&usbmisc->lock, flags);
325
326 return ret;
327}
328
329static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
330{
331 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
332 unsigned long flags;
333 u32 reg;
334
335 if (data->index > 3)
336 return -EINVAL;
337
338 spin_lock_irqsave(&usbmisc->lock, flags);
339
340 reg = readl(usbmisc->base + data->index * 4);
341 if (data->disable_oc) {
342 reg |= MX6_BM_OVER_CUR_DIS;
343 } else if (data->oc_polarity == 1) {
344 /* High active */
345 reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
346 }
347 writel(reg, usbmisc->base + data->index * 4);
348
349 /* SoC non-burst setting */
350 reg = readl(usbmisc->base + data->index * 4);
351 writel(reg | MX6_BM_NON_BURST_SETTING,
352 usbmisc->base + data->index * 4);
353
354 spin_unlock_irqrestore(&usbmisc->lock, flags);
355
356 usbmisc_imx6q_set_wakeup(data, false);
357
358 return 0;
359}
360
361static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
362{
363 void __iomem *reg = NULL;
364 unsigned long flags;
365 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
366 u32 val;
367
368 usbmisc_imx6q_init(data);
369
370 if (data->index == 0 || data->index == 1) {
371 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
372 spin_lock_irqsave(&usbmisc->lock, flags);
373 /* Set vbus wakeup source as bvalid */
374 val = readl(reg);
375 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
376 /*
377 * Disable dp/dm wakeup in device mode when vbus is
378 * not there.
379 */
380 val = readl(usbmisc->base + data->index * 4);
381 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
382 usbmisc->base + data->index * 4);
383 spin_unlock_irqrestore(&usbmisc->lock, flags);
384 }
385
386 return 0;
387}
388
389static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
390{
391 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
392 u32 reg;
393
394 /*
395 * Vybrid only has one misc register set, but in two different
396 * areas. These is reflected in two instances of this driver.
397 */
398 if (data->index >= 1)
399 return -EINVAL;
400
401 if (data->disable_oc) {
402 reg = readl(usbmisc->base);
403 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
404 }
405
406 return 0;
407}
408
409static int usbmisc_imx7d_set_wakeup
410 (struct imx_usbmisc_data *data, bool enabled)
411{
412 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
413 unsigned long flags;
414 u32 val;
415 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
416 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
417
418 spin_lock_irqsave(&usbmisc->lock, flags);
419 val = readl(usbmisc->base);
420 if (enabled) {
421 writel(val | wakeup_setting, usbmisc->base);
422 } else {
423 if (val & MX6_BM_WAKEUP_INTR)
424 dev_dbg(data->dev, "wakeup int\n");
425 writel(val & ~wakeup_setting, usbmisc->base);
426 }
427 spin_unlock_irqrestore(&usbmisc->lock, flags);
428
429 return 0;
430}
431
432static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
433{
434 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
435 unsigned long flags;
436 u32 reg;
437
438 if (data->index >= 1)
439 return -EINVAL;
440
441 spin_lock_irqsave(&usbmisc->lock, flags);
442 reg = readl(usbmisc->base);
443 if (data->disable_oc) {
444 reg |= MX6_BM_OVER_CUR_DIS;
445 } else if (data->oc_polarity == 1) {
446 /* High active */
447 reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
448 }
449 writel(reg, usbmisc->base);
450
451 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
452 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
453 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
454 usbmisc->base + MX7D_USBNC_USB_CTRL2);
455 spin_unlock_irqrestore(&usbmisc->lock, flags);
456
457 usbmisc_imx7d_set_wakeup(data, false);
458
459 return 0;
460}
461
462static const struct usbmisc_ops imx25_usbmisc_ops = {
463 .init = usbmisc_imx25_init,
464 .post = usbmisc_imx25_post,
465};
466
467static const struct usbmisc_ops imx27_usbmisc_ops = {
468 .init = usbmisc_imx27_init,
469};
470
471static const struct usbmisc_ops imx51_usbmisc_ops = {
472 .init = usbmisc_imx53_init,
473};
474
475static const struct usbmisc_ops imx53_usbmisc_ops = {
476 .init = usbmisc_imx53_init,
477};
478
479static const struct usbmisc_ops imx6q_usbmisc_ops = {
480 .set_wakeup = usbmisc_imx6q_set_wakeup,
481 .init = usbmisc_imx6q_init,
482};
483
484static const struct usbmisc_ops vf610_usbmisc_ops = {
485 .init = usbmisc_vf610_init,
486};
487
488static const struct usbmisc_ops imx6sx_usbmisc_ops = {
489 .set_wakeup = usbmisc_imx6q_set_wakeup,
490 .init = usbmisc_imx6sx_init,
491};
492
493static const struct usbmisc_ops imx7d_usbmisc_ops = {
494 .init = usbmisc_imx7d_init,
495 .set_wakeup = usbmisc_imx7d_set_wakeup,
496};
497
498static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
499{
500 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
501
502 return usbmisc->ops == &imx53_usbmisc_ops;
503}
504
505int imx_usbmisc_init(struct imx_usbmisc_data *data)
506{
507 struct imx_usbmisc *usbmisc;
508
509 if (!data)
510 return 0;
511
512 usbmisc = dev_get_drvdata(data->dev);
513 if (!usbmisc->ops->init)
514 return 0;
515 return usbmisc->ops->init(data);
516}
517EXPORT_SYMBOL_GPL(imx_usbmisc_init);
518
519int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
520{
521 struct imx_usbmisc *usbmisc;
522
523 if (!data)
524 return 0;
525
526 usbmisc = dev_get_drvdata(data->dev);
527 if (!usbmisc->ops->post)
528 return 0;
529 return usbmisc->ops->post(data);
530}
531EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
532
533int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
534{
535 struct imx_usbmisc *usbmisc;
536
537 if (!data)
538 return 0;
539
540 usbmisc = dev_get_drvdata(data->dev);
541 if (!usbmisc->ops->set_wakeup)
542 return 0;
543 return usbmisc->ops->set_wakeup(data, enabled);
544}
545EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
546
547static const struct of_device_id usbmisc_imx_dt_ids[] = {
548 {
549 .compatible = "fsl,imx25-usbmisc",
550 .data = &imx25_usbmisc_ops,
551 },
552 {
553 .compatible = "fsl,imx35-usbmisc",
554 .data = &imx25_usbmisc_ops,
555 },
556 {
557 .compatible = "fsl,imx27-usbmisc",
558 .data = &imx27_usbmisc_ops,
559 },
560 {
561 .compatible = "fsl,imx51-usbmisc",
562 .data = &imx51_usbmisc_ops,
563 },
564 {
565 .compatible = "fsl,imx53-usbmisc",
566 .data = &imx53_usbmisc_ops,
567 },
568 {
569 .compatible = "fsl,imx6q-usbmisc",
570 .data = &imx6q_usbmisc_ops,
571 },
572 {
573 .compatible = "fsl,vf610-usbmisc",
574 .data = &vf610_usbmisc_ops,
575 },
576 {
577 .compatible = "fsl,imx6sx-usbmisc",
578 .data = &imx6sx_usbmisc_ops,
579 },
580 {
581 .compatible = "fsl,imx6ul-usbmisc",
582 .data = &imx6sx_usbmisc_ops,
583 },
584 {
585 .compatible = "fsl,imx7d-usbmisc",
586 .data = &imx7d_usbmisc_ops,
587 },
588 { /* sentinel */ }
589};
590MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
591
592static int usbmisc_imx_probe(struct platform_device *pdev)
593{
594 struct resource *res;
595 struct imx_usbmisc *data;
596 const struct of_device_id *of_id;
597
598 of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
599 if (!of_id)
600 return -ENODEV;
601
602 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
603 if (!data)
604 return -ENOMEM;
605
606 spin_lock_init(&data->lock);
607
608 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
609 data->base = devm_ioremap_resource(&pdev->dev, res);
610 if (IS_ERR(data->base))
611 return PTR_ERR(data->base);
612
613 data->ops = (const struct usbmisc_ops *)of_id->data;
614 platform_set_drvdata(pdev, data);
615
616 return 0;
617}
618
619static int usbmisc_imx_remove(struct platform_device *pdev)
620{
621 return 0;
622}
623
624static struct platform_driver usbmisc_imx_driver = {
625 .probe = usbmisc_imx_probe,
626 .remove = usbmisc_imx_remove,
627 .driver = {
628 .name = "usbmisc_imx",
629 .of_match_table = usbmisc_imx_dt_ids,
630 },
631};
632
633module_platform_driver(usbmisc_imx_driver);
634
635MODULE_ALIAS("platform:usbmisc-imx");
636MODULE_LICENSE("GPL v2");
637MODULE_DESCRIPTION("driver for imx usb non-core registers");
638MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");