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_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)
73 #define VF610_OVER_CUR_DIS BIT(7)
76 /* It's called once when probe a usb device */
77 int (*init)(struct imx_usbmisc_data *data);
78 /* It's called once after adding a usb device */
79 int (*post)(struct imx_usbmisc_data *data);
80 /* It's called when we need to enable/disable usb wakeup */
81 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
87 const struct usbmisc_ops *ops;
90 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
92 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
99 spin_lock_irqsave(&usbmisc->lock, flags);
100 switch (data->index) {
102 val = readl(usbmisc->base);
103 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
104 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
105 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
106 writel(val, usbmisc->base);
109 val = readl(usbmisc->base);
110 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
111 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
112 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
113 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
115 writel(val, usbmisc->base);
119 spin_unlock_irqrestore(&usbmisc->lock, flags);
124 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
126 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
135 spin_lock_irqsave(&usbmisc->lock, flags);
136 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
138 writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
139 spin_unlock_irqrestore(&usbmisc->lock, flags);
140 usleep_range(5000, 10000); /* needed to stabilize voltage */
146 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
148 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
152 switch (data->index) {
154 val = MX27_OTG_PM_BIT;
157 val = MX27_H1_PM_BIT;
160 val = MX27_H2_PM_BIT;
166 spin_lock_irqsave(&usbmisc->lock, flags);
167 if (data->disable_oc)
168 val = readl(usbmisc->base) | val;
170 val = readl(usbmisc->base) & ~val;
171 writel(val, usbmisc->base);
172 spin_unlock_irqrestore(&usbmisc->lock, flags);
177 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
179 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
180 void __iomem *reg = NULL;
187 /* Select a 24 MHz reference clock for the PHY */
188 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
189 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
190 val |= MX53_USB_PLL_DIV_24_MHZ;
191 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
193 if (data->disable_oc) {
194 spin_lock_irqsave(&usbmisc->lock, flags);
195 switch (data->index) {
197 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
198 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
201 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
202 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
205 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
206 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
209 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
210 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
215 spin_unlock_irqrestore(&usbmisc->lock, flags);
221 static int usbmisc_imx6q_set_wakeup
222 (struct imx_usbmisc_data *data, bool enabled)
224 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
227 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
228 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
234 spin_lock_irqsave(&usbmisc->lock, flags);
235 val = readl(usbmisc->base + data->index * 4);
237 val |= wakeup_setting;
238 writel(val, usbmisc->base + data->index * 4);
240 if (val & MX6_BM_WAKEUP_INTR)
241 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
242 val &= ~wakeup_setting;
243 writel(val, usbmisc->base + data->index * 4);
245 spin_unlock_irqrestore(&usbmisc->lock, flags);
250 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
252 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
259 spin_lock_irqsave(&usbmisc->lock, flags);
261 if (data->disable_oc) {
262 reg = readl(usbmisc->base + data->index * 4);
263 writel(reg | MX6_BM_OVER_CUR_DIS,
264 usbmisc->base + data->index * 4);
267 /* SoC non-burst setting */
268 reg = readl(usbmisc->base + data->index * 4);
269 writel(reg | MX6_BM_NON_BURST_SETTING,
270 usbmisc->base + data->index * 4);
272 spin_unlock_irqrestore(&usbmisc->lock, flags);
274 usbmisc_imx6q_set_wakeup(data, false);
279 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
281 void __iomem *reg = NULL;
283 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
286 usbmisc_imx6q_init(data);
288 if (data->index == 0 || data->index == 1) {
289 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
290 spin_lock_irqsave(&usbmisc->lock, flags);
291 /* Set vbus wakeup source as bvalid */
293 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
295 * Disable dp/dm wakeup in device mode when vbus is
298 val = readl(usbmisc->base + data->index * 4);
299 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
300 usbmisc->base + data->index * 4);
301 spin_unlock_irqrestore(&usbmisc->lock, flags);
307 static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
309 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
313 * Vybrid only has one misc register set, but in two different
314 * areas. These is reflected in two instances of this driver.
316 if (data->index >= 1)
319 if (data->disable_oc) {
320 reg = readl(usbmisc->base);
321 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
327 static const struct usbmisc_ops imx25_usbmisc_ops = {
328 .init = usbmisc_imx25_init,
329 .post = usbmisc_imx25_post,
332 static const struct usbmisc_ops imx27_usbmisc_ops = {
333 .init = usbmisc_imx27_init,
336 static const struct usbmisc_ops imx53_usbmisc_ops = {
337 .init = usbmisc_imx53_init,
340 static const struct usbmisc_ops imx6q_usbmisc_ops = {
341 .set_wakeup = usbmisc_imx6q_set_wakeup,
342 .init = usbmisc_imx6q_init,
345 static const struct usbmisc_ops vf610_usbmisc_ops = {
346 .init = usbmisc_vf610_init,
349 static const struct usbmisc_ops imx6sx_usbmisc_ops = {
350 .set_wakeup = usbmisc_imx6q_set_wakeup,
351 .init = usbmisc_imx6sx_init,
354 int imx_usbmisc_init(struct imx_usbmisc_data *data)
356 struct imx_usbmisc *usbmisc;
361 usbmisc = dev_get_drvdata(data->dev);
362 if (!usbmisc->ops->init)
364 return usbmisc->ops->init(data);
366 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
368 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
370 struct imx_usbmisc *usbmisc;
375 usbmisc = dev_get_drvdata(data->dev);
376 if (!usbmisc->ops->post)
378 return usbmisc->ops->post(data);
380 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
382 int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
384 struct imx_usbmisc *usbmisc;
389 usbmisc = dev_get_drvdata(data->dev);
390 if (!usbmisc->ops->set_wakeup)
392 return usbmisc->ops->set_wakeup(data, enabled);
394 EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
396 static const struct of_device_id usbmisc_imx_dt_ids[] = {
398 .compatible = "fsl,imx25-usbmisc",
399 .data = &imx25_usbmisc_ops,
402 .compatible = "fsl,imx35-usbmisc",
403 .data = &imx25_usbmisc_ops,
406 .compatible = "fsl,imx27-usbmisc",
407 .data = &imx27_usbmisc_ops,
410 .compatible = "fsl,imx51-usbmisc",
411 .data = &imx53_usbmisc_ops,
414 .compatible = "fsl,imx53-usbmisc",
415 .data = &imx53_usbmisc_ops,
418 .compatible = "fsl,imx6q-usbmisc",
419 .data = &imx6q_usbmisc_ops,
422 .compatible = "fsl,vf610-usbmisc",
423 .data = &vf610_usbmisc_ops,
426 .compatible = "fsl,imx6sx-usbmisc",
427 .data = &imx6sx_usbmisc_ops,
431 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
433 static int usbmisc_imx_probe(struct platform_device *pdev)
435 struct resource *res;
436 struct imx_usbmisc *data;
437 struct of_device_id *tmp_dev;
439 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
443 spin_lock_init(&data->lock);
445 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
446 data->base = devm_ioremap_resource(&pdev->dev, res);
447 if (IS_ERR(data->base))
448 return PTR_ERR(data->base);
450 tmp_dev = (struct of_device_id *)
451 of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
452 data->ops = (const struct usbmisc_ops *)tmp_dev->data;
453 platform_set_drvdata(pdev, data);
458 static int usbmisc_imx_remove(struct platform_device *pdev)
463 static struct platform_driver usbmisc_imx_driver = {
464 .probe = usbmisc_imx_probe,
465 .remove = usbmisc_imx_remove,
467 .name = "usbmisc_imx",
468 .of_match_table = usbmisc_imx_dt_ids,
472 module_platform_driver(usbmisc_imx_driver);
474 MODULE_ALIAS("platform:usbmisc-imx");
475 MODULE_LICENSE("GPL v2");
476 MODULE_DESCRIPTION("driver for imx usb non-core registers");
477 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");