2 * Copyright 2012 Freescale Semiconductor, Inc.
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:
8 * http://www.opensource.org/licenses/gpl-license.html
9 * http://www.gnu.org/copyleft/gpl.html
12 #include <linux/module.h>
13 #include <linux/of_platform.h>
14 #include <linux/err.h>
16 #include <linux/delay.h>
18 #include "ci_hdrc_imx.h"
20 #define MX25_USB_PHY_CTRL_OFFSET 0x08
21 #define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
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)
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)
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)
43 #define MX27_H1_PM_BIT BIT(8)
44 #define MX27_H2_PM_BIT BIT(16)
45 #define MX27_OTG_PM_BIT BIT(24)
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
57 #define MX6_BM_NON_BURST_SETTING BIT(1)
58 #define MX6_BM_OVER_CUR_DIS BIT(7)
59 #define MX6_BM_OVER_CUR_POLARITY BIT(8)
60 #define MX6_BM_WAKEUP_ENABLE BIT(10)
61 #define MX6_BM_ID_WAKEUP BIT(16)
62 #define MX6_BM_VBUS_WAKEUP BIT(17)
63 #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
64 #define MX6_BM_WAKEUP_INTR BIT(31)
65 #define MX6_USB_OTG1_PHY_CTRL 0x18
66 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */
67 #define MX6_USB_OTG2_PHY_CTRL 0x1c
68 #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
69 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
70 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
71 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
72 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
74 #define VF610_OVER_CUR_DIS BIT(7)
76 #define MX7D_USBNC_USB_CTRL2 0x4
77 #define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3
78 #define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0)
79 #define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0)
80 #define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
81 #define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
82 #define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
85 /* It's called once when probe a usb device */
86 int (*init)(struct imx_usbmisc_data *data);
87 /* It's called once after adding a usb device */
88 int (*post)(struct imx_usbmisc_data *data);
89 /* It's called when we need to enable/disable usb wakeup */
90 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
96 const struct usbmisc_ops *ops;
99 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
101 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
108 spin_lock_irqsave(&usbmisc->lock, flags);
109 switch (data->index) {
111 val = readl(usbmisc->base);
112 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
113 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
114 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
115 writel(val, usbmisc->base);
118 val = readl(usbmisc->base);
119 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
120 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
121 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
122 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
124 writel(val, usbmisc->base);
128 spin_unlock_irqrestore(&usbmisc->lock, flags);
133 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
135 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
144 spin_lock_irqsave(&usbmisc->lock, flags);
145 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
147 writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
148 spin_unlock_irqrestore(&usbmisc->lock, flags);
149 usleep_range(5000, 10000); /* needed to stabilize voltage */
155 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
157 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
161 switch (data->index) {
163 val = MX27_OTG_PM_BIT;
166 val = MX27_H1_PM_BIT;
169 val = MX27_H2_PM_BIT;
175 spin_lock_irqsave(&usbmisc->lock, flags);
176 if (data->disable_oc)
177 val = readl(usbmisc->base) | val;
179 val = readl(usbmisc->base) & ~val;
180 writel(val, usbmisc->base);
181 spin_unlock_irqrestore(&usbmisc->lock, flags);
186 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
188 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
189 void __iomem *reg = NULL;
196 /* Select a 24 MHz reference clock for the PHY */
197 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
198 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
199 val |= MX53_USB_PLL_DIV_24_MHZ;
200 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
202 if (data->disable_oc) {
203 spin_lock_irqsave(&usbmisc->lock, flags);
204 switch (data->index) {
206 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
207 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
210 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
211 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
214 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
215 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
218 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
219 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
224 spin_unlock_irqrestore(&usbmisc->lock, flags);
230 static int usbmisc_imx6q_set_wakeup
231 (struct imx_usbmisc_data *data, bool enabled)
233 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
236 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
237 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
243 spin_lock_irqsave(&usbmisc->lock, flags);
244 val = readl(usbmisc->base + data->index * 4);
246 val |= wakeup_setting;
247 writel(val, usbmisc->base + data->index * 4);
249 if (val & MX6_BM_WAKEUP_INTR)
250 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
251 val &= ~wakeup_setting;
252 writel(val, usbmisc->base + data->index * 4);
254 spin_unlock_irqrestore(&usbmisc->lock, flags);
259 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
261 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
268 spin_lock_irqsave(&usbmisc->lock, flags);
270 reg = readl(usbmisc->base + data->index * 4);
271 if (data->disable_oc) {
272 reg |= MX6_BM_OVER_CUR_DIS;
273 } else if (data->oc_polarity == 1) {
275 reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
277 reg &= ~(MX6_BM_OVER_CUR_DIS);
279 writel(reg, usbmisc->base + data->index * 4);
281 /* SoC non-burst setting */
282 reg = readl(usbmisc->base + data->index * 4);
283 writel(reg | MX6_BM_NON_BURST_SETTING,
284 usbmisc->base + data->index * 4);
286 spin_unlock_irqrestore(&usbmisc->lock, flags);
288 usbmisc_imx6q_set_wakeup(data, false);
293 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
295 void __iomem *reg = NULL;
297 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
300 usbmisc_imx6q_init(data);
302 if (data->index == 0 || data->index == 1) {
303 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
304 spin_lock_irqsave(&usbmisc->lock, flags);
305 /* Set vbus wakeup source as bvalid */
307 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
309 * Disable dp/dm wakeup in device mode when vbus is
312 val = readl(usbmisc->base + data->index * 4);
313 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
314 usbmisc->base + data->index * 4);
315 spin_unlock_irqrestore(&usbmisc->lock, flags);
321 static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
323 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
327 * Vybrid only has one misc register set, but in two different
328 * areas. These is reflected in two instances of this driver.
330 if (data->index >= 1)
333 if (data->disable_oc) {
334 reg = readl(usbmisc->base);
335 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
341 static int usbmisc_imx7d_set_wakeup
342 (struct imx_usbmisc_data *data, bool enabled)
344 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
347 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
348 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
350 spin_lock_irqsave(&usbmisc->lock, flags);
351 val = readl(usbmisc->base);
353 writel(val | wakeup_setting, usbmisc->base);
355 if (val & MX6_BM_WAKEUP_INTR)
356 dev_dbg(data->dev, "wakeup int\n");
357 writel(val & ~wakeup_setting, usbmisc->base);
359 spin_unlock_irqrestore(&usbmisc->lock, flags);
364 static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
366 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
370 if (data->index >= 1)
373 spin_lock_irqsave(&usbmisc->lock, flags);
374 reg = readl(usbmisc->base);
375 if (data->disable_oc) {
376 reg |= MX6_BM_OVER_CUR_DIS;
377 } else if (data->oc_polarity == 1) {
379 reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
381 writel(reg, usbmisc->base);
383 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
384 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
385 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
386 usbmisc->base + MX7D_USBNC_USB_CTRL2);
387 spin_unlock_irqrestore(&usbmisc->lock, flags);
389 usbmisc_imx7d_set_wakeup(data, false);
394 static const struct usbmisc_ops imx25_usbmisc_ops = {
395 .init = usbmisc_imx25_init,
396 .post = usbmisc_imx25_post,
399 static const struct usbmisc_ops imx27_usbmisc_ops = {
400 .init = usbmisc_imx27_init,
403 static const struct usbmisc_ops imx53_usbmisc_ops = {
404 .init = usbmisc_imx53_init,
407 static const struct usbmisc_ops imx6q_usbmisc_ops = {
408 .set_wakeup = usbmisc_imx6q_set_wakeup,
409 .init = usbmisc_imx6q_init,
412 static const struct usbmisc_ops vf610_usbmisc_ops = {
413 .init = usbmisc_vf610_init,
416 static const struct usbmisc_ops imx6sx_usbmisc_ops = {
417 .set_wakeup = usbmisc_imx6q_set_wakeup,
418 .init = usbmisc_imx6sx_init,
421 static const struct usbmisc_ops imx7d_usbmisc_ops = {
422 .init = usbmisc_imx7d_init,
423 .set_wakeup = usbmisc_imx7d_set_wakeup,
426 int imx_usbmisc_init(struct imx_usbmisc_data *data)
428 struct imx_usbmisc *usbmisc;
433 usbmisc = dev_get_drvdata(data->dev);
434 if (!usbmisc->ops->init)
436 return usbmisc->ops->init(data);
438 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
440 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
442 struct imx_usbmisc *usbmisc;
447 usbmisc = dev_get_drvdata(data->dev);
448 if (!usbmisc->ops->post)
450 return usbmisc->ops->post(data);
452 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
454 int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
456 struct imx_usbmisc *usbmisc;
461 usbmisc = dev_get_drvdata(data->dev);
462 if (!usbmisc->ops->set_wakeup)
464 return usbmisc->ops->set_wakeup(data, enabled);
466 EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
468 static const struct of_device_id usbmisc_imx_dt_ids[] = {
470 .compatible = "fsl,imx25-usbmisc",
471 .data = &imx25_usbmisc_ops,
474 .compatible = "fsl,imx35-usbmisc",
475 .data = &imx25_usbmisc_ops,
478 .compatible = "fsl,imx27-usbmisc",
479 .data = &imx27_usbmisc_ops,
482 .compatible = "fsl,imx51-usbmisc",
483 .data = &imx53_usbmisc_ops,
486 .compatible = "fsl,imx53-usbmisc",
487 .data = &imx53_usbmisc_ops,
490 .compatible = "fsl,imx6q-usbmisc",
491 .data = &imx6q_usbmisc_ops,
494 .compatible = "fsl,vf610-usbmisc",
495 .data = &vf610_usbmisc_ops,
498 .compatible = "fsl,imx6sx-usbmisc",
499 .data = &imx6sx_usbmisc_ops,
502 .compatible = "fsl,imx6ul-usbmisc",
503 .data = &imx6sx_usbmisc_ops,
506 .compatible = "fsl,imx7d-usbmisc",
507 .data = &imx7d_usbmisc_ops,
511 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
513 static int usbmisc_imx_probe(struct platform_device *pdev)
515 struct resource *res;
516 struct imx_usbmisc *data;
517 const struct of_device_id *of_id;
519 of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
523 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
527 spin_lock_init(&data->lock);
529 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
530 data->base = devm_ioremap_resource(&pdev->dev, res);
531 if (IS_ERR(data->base))
532 return PTR_ERR(data->base);
534 data->ops = (const struct usbmisc_ops *)of_id->data;
535 platform_set_drvdata(pdev, data);
540 static int usbmisc_imx_remove(struct platform_device *pdev)
545 static struct platform_driver usbmisc_imx_driver = {
546 .probe = usbmisc_imx_probe,
547 .remove = usbmisc_imx_remove,
549 .name = "usbmisc_imx",
550 .of_match_table = usbmisc_imx_dt_ids,
554 module_platform_driver(usbmisc_imx_driver);
556 MODULE_ALIAS("platform:usbmisc-imx");
557 MODULE_LICENSE("GPL v2");
558 MODULE_DESCRIPTION("driver for imx usb non-core registers");
559 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");