?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
tcp: fix lockdep splat in tcp_snd_una_update()
[linux/fpc-iii.git] / drivers / usb / chipidea / usbmisc_imx.c
blobab8b027e8cc870615d399abb631849875db72427
1 /*
2 * Copyright 2012 Freescale Semiconductor, Inc.
3 *
4 * The code contained herein is licensed under the GNU General Public
5 * License. You may obtain a copy of the GNU General Public License
6 * Version 2 or later at the following locations:
7 *
8 * http://www.opensource.org/licenses/gpl-license.html
9 * http://www.gnu.org/copyleft/gpl.html
10 */
11
12 #include <linux/module.h>
13 #include <linux/of_platform.h>
14 #include <linux/err.h>
15 #include <linux/io.h>
16 #include <linux/delay.h>
17
18 #include "ci_hdrc_imx.h"
19
20 #define MX25_USB_PHY_CTRL_OFFSET 0x08
21 #define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
22
23 #define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0)
24 #define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0)
25 #define MX25_EHCI_INTERFACE_MASK (0xf)
26
27 #define MX25_OTG_SIC_SHIFT 29
28 #define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT)
29 #define MX25_OTG_PM_BIT BIT(24)
30 #define MX25_OTG_PP_BIT BIT(11)
31 #define MX25_OTG_OCPOL_BIT BIT(3)
32
33 #define MX25_H1_SIC_SHIFT 21
34 #define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT)
35 #define MX25_H1_PP_BIT BIT(18)
36 #define MX25_H1_PM_BIT BIT(16)
37 #define MX25_H1_IPPUE_UP_BIT BIT(7)
38 #define MX25_H1_IPPUE_DOWN_BIT BIT(6)
39 #define MX25_H1_TLL_BIT BIT(5)
40 #define MX25_H1_USBTE_BIT BIT(4)
41 #define MX25_H1_OCPOL_BIT BIT(2)
42
43 #define MX27_H1_PM_BIT BIT(8)
44 #define MX27_H2_PM_BIT BIT(16)
45 #define MX27_OTG_PM_BIT BIT(24)
46
47 #define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08
48 #define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c
49 #define MX53_USB_UH2_CTRL_OFFSET 0x14
50 #define MX53_USB_UH3_CTRL_OFFSET 0x18
51 #define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
52 #define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
53 #define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
54 #define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3
55 #define MX53_USB_PLL_DIV_24_MHZ 0x01
56
57 #define MX6_BM_NON_BURST_SETTING BIT(1)
58 #define MX6_BM_OVER_CUR_DIS BIT(7)
59 #define MX6_BM_WAKEUP_ENABLE BIT(10)
60 #define MX6_BM_ID_WAKEUP BIT(16)
61 #define MX6_BM_VBUS_WAKEUP BIT(17)
62 #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
63 #define MX6_BM_WAKEUP_INTR BIT(31)
64 #define MX6_USB_OTG1_PHY_CTRL 0x18
65 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */
66 #define MX6_USB_OTG2_PHY_CTRL 0x1c
67 #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
68 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
69 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
70 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
71 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
72
73 #define VF610_OVER_CUR_DIS BIT(7)
74
75 #define MX7D_USBNC_USB_CTRL2 0x4
76 #define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3
77 #define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0)
78 #define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0)
79 #define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
80 #define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
81 #define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
82
83 struct usbmisc_ops {
84 /* It's called once when probe a usb device */
85 int (*init)(struct imx_usbmisc_data *data);
86 /* It's called once after adding a usb device */
87 int (*post)(struct imx_usbmisc_data *data);
88 /* It's called when we need to enable/disable usb wakeup */
89 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
90 };
91
92 struct imx_usbmisc {
93 void __iomem *base;
94 spinlock_t lock;
95 const struct usbmisc_ops *ops;
96 };
97
98 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
99 {
100 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
101 unsigned long flags;
102 u32 val = 0;
103
104 if (data->index > 1)
105 return -EINVAL;
106
107 spin_lock_irqsave(&usbmisc->lock, flags);
108 switch (data->index) {
109 case 0:
110 val = readl(usbmisc->base);
111 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
112 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
113 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
114 writel(val, usbmisc->base);
115 break;
116 case 1:
117 val = readl(usbmisc->base);
118 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
119 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
120 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
121 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
122
123 writel(val, usbmisc->base);
124
125 break;
126 }
127 spin_unlock_irqrestore(&usbmisc->lock, flags);
128
129 return 0;
130 }
131
132 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
133 {
134 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
135 void __iomem *reg;
136 unsigned long flags;
137 u32 val;
138
139 if (data->index > 2)
140 return -EINVAL;
141
142 if (data->evdo) {
143 spin_lock_irqsave(&usbmisc->lock, flags);
144 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
145 val = readl(reg);
146 writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
147 spin_unlock_irqrestore(&usbmisc->lock, flags);
148 usleep_range(5000, 10000); /* needed to stabilize voltage */
149 }
150
151 return 0;
152 }
153
154 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
155 {
156 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
157 unsigned long flags;
158 u32 val;
159
160 switch (data->index) {
161 case 0:
162 val = MX27_OTG_PM_BIT;
163 break;
164 case 1:
165 val = MX27_H1_PM_BIT;
166 break;
167 case 2:
168 val = MX27_H2_PM_BIT;
169 break;
170 default:
171 return -EINVAL;
172 }
173
174 spin_lock_irqsave(&usbmisc->lock, flags);
175 if (data->disable_oc)
176 val = readl(usbmisc->base) | val;
177 else
178 val = readl(usbmisc->base) & ~val;
179 writel(val, usbmisc->base);
180 spin_unlock_irqrestore(&usbmisc->lock, flags);
181
182 return 0;
183 }
184
185 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
186 {
187 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
188 void __iomem *reg = NULL;
189 unsigned long flags;
190 u32 val = 0;
191
192 if (data->index > 3)
193 return -EINVAL;
194
195 /* Select a 24 MHz reference clock for the PHY */
196 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
197 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
198 val |= MX53_USB_PLL_DIV_24_MHZ;
199 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
200
201 if (data->disable_oc) {
202 spin_lock_irqsave(&usbmisc->lock, flags);
203 switch (data->index) {
204 case 0:
205 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
206 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
207 break;
208 case 1:
209 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
210 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
211 break;
212 case 2:
213 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
214 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
215 break;
216 case 3:
217 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
218 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
219 break;
220 }
221 if (reg && val)
222 writel(val, reg);
223 spin_unlock_irqrestore(&usbmisc->lock, flags);
224 }
225
226 return 0;
227 }
228
229 static int usbmisc_imx6q_set_wakeup
230 (struct imx_usbmisc_data *data, bool enabled)
231 {
232 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
233 unsigned long flags;
234 u32 val;
235 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
236 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
237 int ret = 0;
238
239 if (data->index > 3)
240 return -EINVAL;
241
242 spin_lock_irqsave(&usbmisc->lock, flags);
243 val = readl(usbmisc->base + data->index * 4);
244 if (enabled) {
245 val |= wakeup_setting;
246 writel(val, usbmisc->base + data->index * 4);
247 } else {
248 if (val & MX6_BM_WAKEUP_INTR)
249 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
250 val &= ~wakeup_setting;
251 writel(val, usbmisc->base + data->index * 4);
252 }
253 spin_unlock_irqrestore(&usbmisc->lock, flags);
254
255 return ret;
256 }
257
258 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
259 {
260 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
261 unsigned long flags;
262 u32 reg;
263
264 if (data->index > 3)
265 return -EINVAL;
266
267 spin_lock_irqsave(&usbmisc->lock, flags);
268
269 if (data->disable_oc) {
270 reg = readl(usbmisc->base + data->index * 4);
271 writel(reg | MX6_BM_OVER_CUR_DIS,
272 usbmisc->base + data->index * 4);
273 }
274
275 /* SoC non-burst setting */
276 reg = readl(usbmisc->base + data->index * 4);
277 writel(reg | MX6_BM_NON_BURST_SETTING,
278 usbmisc->base + data->index * 4);
279
280 spin_unlock_irqrestore(&usbmisc->lock, flags);
281
282 usbmisc_imx6q_set_wakeup(data, false);
283
284 return 0;
285 }
286
287 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
288 {
289 void __iomem *reg = NULL;
290 unsigned long flags;
291 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
292 u32 val;
293
294 usbmisc_imx6q_init(data);
295
296 if (data->index == 0 || data->index == 1) {
297 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
298 spin_lock_irqsave(&usbmisc->lock, flags);
299 /* Set vbus wakeup source as bvalid */
300 val = readl(reg);
301 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
302 /*
303 * Disable dp/dm wakeup in device mode when vbus is
304 * not there.
305 */
306 val = readl(usbmisc->base + data->index * 4);
307 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
308 usbmisc->base + data->index * 4);
309 spin_unlock_irqrestore(&usbmisc->lock, flags);
310 }
311
312 return 0;
313 }
314
315 static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
316 {
317 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
318 u32 reg;
319
320 /*
321 * Vybrid only has one misc register set, but in two different
322 * areas. These is reflected in two instances of this driver.
323 */
324 if (data->index >= 1)
325 return -EINVAL;
326
327 if (data->disable_oc) {
328 reg = readl(usbmisc->base);
329 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
330 }
331
332 return 0;
333 }
334
335 static int usbmisc_imx7d_set_wakeup
336 (struct imx_usbmisc_data *data, bool enabled)
337 {
338 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
339 unsigned long flags;
340 u32 val;
341 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
342 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
343
344 spin_lock_irqsave(&usbmisc->lock, flags);
345 val = readl(usbmisc->base);
346 if (enabled) {
347 writel(val | wakeup_setting, usbmisc->base);
348 } else {
349 if (val & MX6_BM_WAKEUP_INTR)
350 dev_dbg(data->dev, "wakeup int\n");
351 writel(val & ~wakeup_setting, usbmisc->base);
352 }
353 spin_unlock_irqrestore(&usbmisc->lock, flags);
354
355 return 0;
356 }
357
358 static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
359 {
360 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
361 unsigned long flags;
362 u32 reg;
363
364 if (data->index >= 1)
365 return -EINVAL;
366
367 spin_lock_irqsave(&usbmisc->lock, flags);
368 if (data->disable_oc) {
369 reg = readl(usbmisc->base);
370 writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base);
371 }
372
373 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
374 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
375 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
376 usbmisc->base + MX7D_USBNC_USB_CTRL2);
377 spin_unlock_irqrestore(&usbmisc->lock, flags);
378
379 usbmisc_imx7d_set_wakeup(data, false);
380
381 return 0;
382 }
383
384 static const struct usbmisc_ops imx25_usbmisc_ops = {
385 .init = usbmisc_imx25_init,
386 .post = usbmisc_imx25_post,
387 };
388
389 static const struct usbmisc_ops imx27_usbmisc_ops = {
390 .init = usbmisc_imx27_init,
391 };
392
393 static const struct usbmisc_ops imx53_usbmisc_ops = {
394 .init = usbmisc_imx53_init,
395 };
396
397 static const struct usbmisc_ops imx6q_usbmisc_ops = {
398 .set_wakeup = usbmisc_imx6q_set_wakeup,
399 .init = usbmisc_imx6q_init,
400 };
401
402 static const struct usbmisc_ops vf610_usbmisc_ops = {
403 .init = usbmisc_vf610_init,
404 };
405
406 static const struct usbmisc_ops imx6sx_usbmisc_ops = {
407 .set_wakeup = usbmisc_imx6q_set_wakeup,
408 .init = usbmisc_imx6sx_init,
409 };
410
411 static const struct usbmisc_ops imx7d_usbmisc_ops = {
412 .init = usbmisc_imx7d_init,
413 .set_wakeup = usbmisc_imx7d_set_wakeup,
414 };
415
416 int imx_usbmisc_init(struct imx_usbmisc_data *data)
417 {
418 struct imx_usbmisc *usbmisc;
419
420 if (!data)
421 return 0;
422
423 usbmisc = dev_get_drvdata(data->dev);
424 if (!usbmisc->ops->init)
425 return 0;
426 return usbmisc->ops->init(data);
427 }
428 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
429
430 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
431 {
432 struct imx_usbmisc *usbmisc;
433
434 if (!data)
435 return 0;
436
437 usbmisc = dev_get_drvdata(data->dev);
438 if (!usbmisc->ops->post)
439 return 0;
440 return usbmisc->ops->post(data);
441 }
442 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
443
444 int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
445 {
446 struct imx_usbmisc *usbmisc;
447
448 if (!data)
449 return 0;
450
451 usbmisc = dev_get_drvdata(data->dev);
452 if (!usbmisc->ops->set_wakeup)
453 return 0;
454 return usbmisc->ops->set_wakeup(data, enabled);
455 }
456 EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
457
458 static const struct of_device_id usbmisc_imx_dt_ids[] = {
459 {
460 .compatible = "fsl,imx25-usbmisc",
461 .data = &imx25_usbmisc_ops,
462 },
463 {
464 .compatible = "fsl,imx35-usbmisc",
465 .data = &imx25_usbmisc_ops,
466 },
467 {
468 .compatible = "fsl,imx27-usbmisc",
469 .data = &imx27_usbmisc_ops,
470 },
471 {
472 .compatible = "fsl,imx51-usbmisc",
473 .data = &imx53_usbmisc_ops,
474 },
475 {
476 .compatible = "fsl,imx53-usbmisc",
477 .data = &imx53_usbmisc_ops,
478 },
479 {
480 .compatible = "fsl,imx6q-usbmisc",
481 .data = &imx6q_usbmisc_ops,
482 },
483 {
484 .compatible = "fsl,vf610-usbmisc",
485 .data = &vf610_usbmisc_ops,
486 },
487 {
488 .compatible = "fsl,imx6sx-usbmisc",
489 .data = &imx6sx_usbmisc_ops,
490 },
491 {
492 .compatible = "fsl,imx6ul-usbmisc",
493 .data = &imx6sx_usbmisc_ops,
494 },
495 { /* sentinel */ }
496 };
497 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
498
499 static int usbmisc_imx_probe(struct platform_device *pdev)
500 {
501 struct resource *res;
502 struct imx_usbmisc *data;
503 const struct of_device_id *of_id;
504
505 of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
506 if (!of_id)
507 return -ENODEV;
508
509 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
510 if (!data)
511 return -ENOMEM;
512
513 spin_lock_init(&data->lock);
514
515 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
516 data->base = devm_ioremap_resource(&pdev->dev, res);
517 if (IS_ERR(data->base))
518 return PTR_ERR(data->base);
519
520 data->ops = (const struct usbmisc_ops *)of_id->data;
521 platform_set_drvdata(pdev, data);
522
523 return 0;
524 }
525
526 static int usbmisc_imx_remove(struct platform_device *pdev)
527 {
528 return 0;
529 }
530
531 static struct platform_driver usbmisc_imx_driver = {
532 .probe = usbmisc_imx_probe,
533 .remove = usbmisc_imx_remove,
534 .driver = {
535 .name = "usbmisc_imx",
536 .of_match_table = usbmisc_imx_dt_ids,
537 },
538 };
539
540 module_platform_driver(usbmisc_imx_driver);
541
542 MODULE_ALIAS("platform:usbmisc-imx");
543 MODULE_LICENSE("GPL v2");
544 MODULE_DESCRIPTION("driver for imx usb non-core registers");
545 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
Linux with added FPC-III support