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_OVER_CUR_DIS BIT(7)
58 #define MX6_BM_WAKEUP_ENABLE BIT(10)
59 #define MX6_BM_ID_WAKEUP BIT(16)
60 #define MX6_BM_VBUS_WAKEUP BIT(17)
61 #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
62 #define MX6_BM_WAKEUP_INTR BIT(31)
63 #define MX6_USB_OTG1_PHY_CTRL 0x18
64 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */
65 #define MX6_USB_OTG2_PHY_CTRL 0x1c
66 #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
67 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
68 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
69 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
70 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
72 #define VF610_OVER_CUR_DIS BIT(7)
75 /* It's called once when probe a usb device */
76 int (*init)(struct imx_usbmisc_data *data);
77 /* It's called once after adding a usb device */
78 int (*post)(struct imx_usbmisc_data *data);
79 /* It's called when we need to enable/disable usb wakeup */
80 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
86 const struct usbmisc_ops *ops;
89 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
91 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
98 spin_lock_irqsave(&usbmisc->lock, flags);
99 switch (data->index) {
101 val = readl(usbmisc->base);
102 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
103 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
104 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
105 writel(val, usbmisc->base);
108 val = readl(usbmisc->base);
109 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
110 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
111 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
112 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
114 writel(val, usbmisc->base);
118 spin_unlock_irqrestore(&usbmisc->lock, flags);
123 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
125 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
134 spin_lock_irqsave(&usbmisc->lock, flags);
135 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
137 writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
138 spin_unlock_irqrestore(&usbmisc->lock, flags);
139 usleep_range(5000, 10000); /* needed to stabilize voltage */
145 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
147 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
151 switch (data->index) {
153 val = MX27_OTG_PM_BIT;
156 val = MX27_H1_PM_BIT;
159 val = MX27_H2_PM_BIT;
165 spin_lock_irqsave(&usbmisc->lock, flags);
166 if (data->disable_oc)
167 val = readl(usbmisc->base) | val;
169 val = readl(usbmisc->base) & ~val;
170 writel(val, usbmisc->base);
171 spin_unlock_irqrestore(&usbmisc->lock, flags);
176 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
178 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
179 void __iomem *reg = NULL;
186 /* Select a 24 MHz reference clock for the PHY */
187 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
188 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
189 val |= MX53_USB_PLL_DIV_24_MHZ;
190 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
192 if (data->disable_oc) {
193 spin_lock_irqsave(&usbmisc->lock, flags);
194 switch (data->index) {
196 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
197 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
200 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
201 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
204 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
205 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
208 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
209 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
214 spin_unlock_irqrestore(&usbmisc->lock, flags);
220 static int usbmisc_imx6q_set_wakeup
221 (struct imx_usbmisc_data *data, bool enabled)
223 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
226 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
227 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
233 spin_lock_irqsave(&usbmisc->lock, flags);
234 val = readl(usbmisc->base + data->index * 4);
236 val |= wakeup_setting;
237 writel(val, usbmisc->base + data->index * 4);
239 if (val & MX6_BM_WAKEUP_INTR)
240 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
241 val &= ~wakeup_setting;
242 writel(val, usbmisc->base + data->index * 4);
244 spin_unlock_irqrestore(&usbmisc->lock, flags);
249 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
251 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
258 if (data->disable_oc) {
259 spin_lock_irqsave(&usbmisc->lock, flags);
260 reg = readl(usbmisc->base + data->index * 4);
261 writel(reg | MX6_BM_OVER_CUR_DIS,
262 usbmisc->base + data->index * 4);
263 spin_unlock_irqrestore(&usbmisc->lock, flags);
266 usbmisc_imx6q_set_wakeup(data, false);
271 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
273 void __iomem *reg = NULL;
275 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
279 usbmisc_imx6q_init(data);
281 if (data->index == 0 || data->index == 1) {
282 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
283 spin_lock_irqsave(&usbmisc->lock, flags);
284 /* Set vbus wakeup source as bvalid */
286 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
288 * Disable dp/dm wakeup in device mode when vbus is
291 val = readl(usbmisc->base + data->index * 4);
292 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
293 usbmisc->base + data->index * 4);
294 spin_unlock_irqrestore(&usbmisc->lock, flags);
300 static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
302 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
306 * Vybrid only has one misc register set, but in two different
307 * areas. These is reflected in two instances of this driver.
309 if (data->index >= 1)
312 if (data->disable_oc) {
313 reg = readl(usbmisc->base);
314 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
320 static const struct usbmisc_ops imx25_usbmisc_ops = {
321 .init = usbmisc_imx25_init,
322 .post = usbmisc_imx25_post,
325 static const struct usbmisc_ops imx27_usbmisc_ops = {
326 .init = usbmisc_imx27_init,
329 static const struct usbmisc_ops imx53_usbmisc_ops = {
330 .init = usbmisc_imx53_init,
333 static const struct usbmisc_ops imx6q_usbmisc_ops = {
334 .set_wakeup = usbmisc_imx6q_set_wakeup,
335 .init = usbmisc_imx6q_init,
338 static const struct usbmisc_ops vf610_usbmisc_ops = {
339 .init = usbmisc_vf610_init,
342 static const struct usbmisc_ops imx6sx_usbmisc_ops = {
343 .set_wakeup = usbmisc_imx6q_set_wakeup,
344 .init = usbmisc_imx6sx_init,
347 int imx_usbmisc_init(struct imx_usbmisc_data *data)
349 struct imx_usbmisc *usbmisc;
354 usbmisc = dev_get_drvdata(data->dev);
355 if (!usbmisc->ops->init)
357 return usbmisc->ops->init(data);
359 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
361 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
363 struct imx_usbmisc *usbmisc;
368 usbmisc = dev_get_drvdata(data->dev);
369 if (!usbmisc->ops->post)
371 return usbmisc->ops->post(data);
373 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
375 int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
377 struct imx_usbmisc *usbmisc;
382 usbmisc = dev_get_drvdata(data->dev);
383 if (!usbmisc->ops->set_wakeup)
385 return usbmisc->ops->set_wakeup(data, enabled);
387 EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
389 static const struct of_device_id usbmisc_imx_dt_ids[] = {
391 .compatible = "fsl,imx25-usbmisc",
392 .data = &imx25_usbmisc_ops,
395 .compatible = "fsl,imx35-usbmisc",
396 .data = &imx25_usbmisc_ops,
399 .compatible = "fsl,imx27-usbmisc",
400 .data = &imx27_usbmisc_ops,
403 .compatible = "fsl,imx51-usbmisc",
404 .data = &imx53_usbmisc_ops,
407 .compatible = "fsl,imx53-usbmisc",
408 .data = &imx53_usbmisc_ops,
411 .compatible = "fsl,imx6q-usbmisc",
412 .data = &imx6q_usbmisc_ops,
415 .compatible = "fsl,vf610-usbmisc",
416 .data = &vf610_usbmisc_ops,
419 .compatible = "fsl,imx6sx-usbmisc",
420 .data = &imx6sx_usbmisc_ops,
424 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
426 static int usbmisc_imx_probe(struct platform_device *pdev)
428 struct resource *res;
429 struct imx_usbmisc *data;
430 struct of_device_id *tmp_dev;
432 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
436 spin_lock_init(&data->lock);
438 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
439 data->base = devm_ioremap_resource(&pdev->dev, res);
440 if (IS_ERR(data->base))
441 return PTR_ERR(data->base);
443 tmp_dev = (struct of_device_id *)
444 of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
445 data->ops = (const struct usbmisc_ops *)tmp_dev->data;
446 platform_set_drvdata(pdev, data);
451 static int usbmisc_imx_remove(struct platform_device *pdev)
456 static struct platform_driver usbmisc_imx_driver = {
457 .probe = usbmisc_imx_probe,
458 .remove = usbmisc_imx_remove,
460 .name = "usbmisc_imx",
461 .of_match_table = usbmisc_imx_dt_ids,
465 module_platform_driver(usbmisc_imx_driver);
467 MODULE_ALIAS("platform:usbmisc-imx");
468 MODULE_LICENSE("GPL v2");
469 MODULE_DESCRIPTION("driver for imx usb non-core registers");
470 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");