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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#include <linux/usb/otg.h>
12
13#include "ci_hdrc_imx.h"
14
15#define MX25_USB_PHY_CTRL_OFFSET 0x08
16#define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
17
18#define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0)
19#define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0)
20#define MX25_EHCI_INTERFACE_MASK (0xf)
21
22#define MX25_OTG_SIC_SHIFT 29
23#define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT)
24#define MX25_OTG_PM_BIT BIT(24)
25#define MX25_OTG_PP_BIT BIT(11)
26#define MX25_OTG_OCPOL_BIT BIT(3)
27
28#define MX25_H1_SIC_SHIFT 21
29#define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT)
30#define MX25_H1_PP_BIT BIT(18)
31#define MX25_H1_PM_BIT BIT(16)
32#define MX25_H1_IPPUE_UP_BIT BIT(7)
33#define MX25_H1_IPPUE_DOWN_BIT BIT(6)
34#define MX25_H1_TLL_BIT BIT(5)
35#define MX25_H1_USBTE_BIT BIT(4)
36#define MX25_H1_OCPOL_BIT BIT(2)
37
38#define MX27_H1_PM_BIT BIT(8)
39#define MX27_H2_PM_BIT BIT(16)
40#define MX27_OTG_PM_BIT BIT(24)
41
42#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08
43#define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c
44#define MX53_USB_CTRL_1_OFFSET 0x10
45#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK (0x11 << 2)
46#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI BIT(2)
47#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK (0x11 << 6)
48#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
49#define MX53_USB_UH2_CTRL_OFFSET 0x14
50#define MX53_USB_UH3_CTRL_OFFSET 0x18
51#define MX53_USB_CLKONOFF_CTRL_OFFSET 0x24
52#define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21)
53#define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22)
54#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
55#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
56#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
57#define MX53_USB_CTRL_1_UH2_ULPI_EN BIT(26)
58#define MX53_USB_CTRL_1_UH3_ULPI_EN BIT(27)
59#define MX53_USB_UHx_CTRL_WAKE_UP_EN BIT(7)
60#define MX53_USB_UHx_CTRL_ULPI_INT_EN BIT(8)
61#define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3
62#define MX53_USB_PLL_DIV_24_MHZ 0x01
63
64#define MX6_BM_NON_BURST_SETTING BIT(1)
65#define MX6_BM_OVER_CUR_DIS BIT(7)
66#define MX6_BM_OVER_CUR_POLARITY BIT(8)
67#define MX6_BM_PWR_POLARITY BIT(9)
68#define MX6_BM_WAKEUP_ENABLE BIT(10)
69#define MX6_BM_UTMI_ON_CLOCK BIT(13)
70#define MX6_BM_ID_WAKEUP BIT(16)
71#define MX6_BM_VBUS_WAKEUP BIT(17)
72#define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
73#define MX6_BM_WAKEUP_INTR BIT(31)
74
75#define MX6_USB_HSIC_CTRL_OFFSET 0x10
76/* Send resume signal without 480Mhz PHY clock */
77#define MX6SX_BM_HSIC_AUTO_RESUME BIT(23)
78/* set before portsc.suspendM = 1 */
79#define MX6_BM_HSIC_DEV_CONN BIT(21)
80/* HSIC enable */
81#define MX6_BM_HSIC_EN BIT(12)
82/* Force HSIC module 480M clock on, even when in Host is in suspend mode */
83#define MX6_BM_HSIC_CLK_ON BIT(11)
84
85#define MX6_USB_OTG1_PHY_CTRL 0x18
86/* For imx6dql, it is host-only controller, for later imx6, it is otg's */
87#define MX6_USB_OTG2_PHY_CTRL 0x1c
88#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
89#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
90#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
91#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
92#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
93
94#define VF610_OVER_CUR_DIS BIT(7)
95
96#define MX7D_USBNC_USB_CTRL2 0x4
97#define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3
98#define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0)
99#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0)
100#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
101#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
102#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
103#define MX7D_USBNC_AUTO_RESUME BIT(2)
104/* The default DM/DP value is pull-down */
105#define MX7D_USBNC_USB_CTRL2_OPMODE(v) (v << 6)
106#define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING MX7D_USBNC_USB_CTRL2_OPMODE(1)
107#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK (BIT(7) | BIT(6))
108#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN BIT(8)
109#define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_VAL BIT(12)
110#define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_EN BIT(13)
111#define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_VAL BIT(14)
112#define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_EN BIT(15)
113#define MX7D_USBNC_USB_CTRL2_DP_DM_MASK (BIT(12) | BIT(13) | \
114 BIT(14) | BIT(15))
115
116#define MX7D_USB_OTG_PHY_CFG1 0x30
117#define MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL BIT(0)
118#define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 BIT(1)
119#define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 BIT(2)
120#define MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB BIT(3)
121#define MX7D_USB_OTG_PHY_CFG2_DRVVBUS0 BIT(16)
122
123#define MX7D_USB_OTG_PHY_CFG2 0x34
124
125#define MX7D_USB_OTG_PHY_STATUS 0x3c
126#define MX7D_USB_OTG_PHY_STATUS_LINE_STATE0 BIT(0)
127#define MX7D_USB_OTG_PHY_STATUS_LINE_STATE1 BIT(1)
128#define MX7D_USB_OTG_PHY_STATUS_VBUS_VLD BIT(3)
129#define MX7D_USB_OTG_PHY_STATUS_CHRGDET BIT(29)
130
131#define MX6_USB_OTG_WAKEUP_BITS (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | \
132 MX6_BM_ID_WAKEUP)
133
134struct usbmisc_ops {
135 /* It's called once when probe a usb device */
136 int (*init)(struct imx_usbmisc_data *data);
137 /* It's called once after adding a usb device */
138 int (*post)(struct imx_usbmisc_data *data);
139 /* It's called when we need to enable/disable usb wakeup */
140 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
141 /* It's called before setting portsc.suspendM */
142 int (*hsic_set_connect)(struct imx_usbmisc_data *data);
143 /* It's called during suspend/resume */
144 int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled);
145 /* usb charger detection */
146 int (*charger_detection)(struct imx_usbmisc_data *data);
147};
148
149struct imx_usbmisc {
150 void __iomem *base;
151 spinlock_t lock;
152 const struct usbmisc_ops *ops;
153};
154
155static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
156
157static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
158{
159 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
160 unsigned long flags;
161 u32 val = 0;
162
163 if (data->index > 1)
164 return -EINVAL;
165
166 spin_lock_irqsave(&usbmisc->lock, flags);
167 switch (data->index) {
168 case 0:
169 val = readl(usbmisc->base);
170 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
171 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
172 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
173
174 /*
175 * If the polarity is not configured assume active high for
176 * historical reasons.
177 */
178 if (data->oc_pol_configured && data->oc_pol_active_low)
179 val &= ~MX25_OTG_OCPOL_BIT;
180
181 writel(val, usbmisc->base);
182 break;
183 case 1:
184 val = readl(usbmisc->base);
185 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
186 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
187 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
188 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
189
190 /*
191 * If the polarity is not configured assume active high for
192 * historical reasons.
193 */
194 if (data->oc_pol_configured && data->oc_pol_active_low)
195 val &= ~MX25_H1_OCPOL_BIT;
196
197 writel(val, usbmisc->base);
198
199 break;
200 }
201 spin_unlock_irqrestore(&usbmisc->lock, flags);
202
203 return 0;
204}
205
206static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
207{
208 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
209 void __iomem *reg;
210 unsigned long flags;
211 u32 val;
212
213 if (data->index > 2)
214 return -EINVAL;
215
216 if (data->index)
217 return 0;
218
219 spin_lock_irqsave(&usbmisc->lock, flags);
220 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
221 val = readl(reg);
222
223 if (data->evdo)
224 val |= MX25_BM_EXTERNAL_VBUS_DIVIDER;
225 else
226 val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER;
227
228 writel(val, reg);
229 spin_unlock_irqrestore(&usbmisc->lock, flags);
230 usleep_range(5000, 10000); /* needed to stabilize voltage */
231
232 return 0;
233}
234
235static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
236{
237 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
238 unsigned long flags;
239 u32 val;
240
241 switch (data->index) {
242 case 0:
243 val = MX27_OTG_PM_BIT;
244 break;
245 case 1:
246 val = MX27_H1_PM_BIT;
247 break;
248 case 2:
249 val = MX27_H2_PM_BIT;
250 break;
251 default:
252 return -EINVAL;
253 }
254
255 spin_lock_irqsave(&usbmisc->lock, flags);
256 if (data->disable_oc)
257 val = readl(usbmisc->base) | val;
258 else
259 val = readl(usbmisc->base) & ~val;
260 writel(val, usbmisc->base);
261 spin_unlock_irqrestore(&usbmisc->lock, flags);
262
263 return 0;
264}
265
266static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
267{
268 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
269 void __iomem *reg = NULL;
270 unsigned long flags;
271 u32 val = 0;
272
273 if (data->index > 3)
274 return -EINVAL;
275
276 /* Select a 24 MHz reference clock for the PHY */
277 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
278 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
279 val |= MX53_USB_PLL_DIV_24_MHZ;
280 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
281
282 spin_lock_irqsave(&usbmisc->lock, flags);
283
284 switch (data->index) {
285 case 0:
286 if (data->disable_oc) {
287 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
288 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
289 writel(val, reg);
290 }
291 break;
292 case 1:
293 if (data->disable_oc) {
294 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
295 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
296 writel(val, reg);
297 }
298 break;
299 case 2:
300 if (data->ulpi) {
301 /* set USBH2 into ULPI-mode. */
302 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
303 val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
304 /* select ULPI clock */
305 val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
306 val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
307 writel(val, reg);
308 /* Set interrupt wake up enable */
309 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
310 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
311 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
312 writel(val, reg);
313 if (is_imx53_usbmisc(data)) {
314 /* Disable internal 60Mhz clock */
315 reg = usbmisc->base +
316 MX53_USB_CLKONOFF_CTRL_OFFSET;
317 val = readl(reg) |
318 MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
319 writel(val, reg);
320 }
321
322 }
323 if (data->disable_oc) {
324 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
325 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
326 writel(val, reg);
327 }
328 break;
329 case 3:
330 if (data->ulpi) {
331 /* set USBH3 into ULPI-mode. */
332 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
333 val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
334 /* select ULPI clock */
335 val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
336 val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
337 writel(val, reg);
338 /* Set interrupt wake up enable */
339 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
340 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
341 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
342 writel(val, reg);
343
344 if (is_imx53_usbmisc(data)) {
345 /* Disable internal 60Mhz clock */
346 reg = usbmisc->base +
347 MX53_USB_CLKONOFF_CTRL_OFFSET;
348 val = readl(reg) |
349 MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
350 writel(val, reg);
351 }
352 }
353 if (data->disable_oc) {
354 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
355 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
356 writel(val, reg);
357 }
358 break;
359 }
360
361 spin_unlock_irqrestore(&usbmisc->lock, flags);
362
363 return 0;
364}
365
366static u32 usbmisc_wakeup_setting(struct imx_usbmisc_data *data)
367{
368 u32 wakeup_setting = MX6_USB_OTG_WAKEUP_BITS;
369
370 if (data->ext_id || data->available_role != USB_DR_MODE_OTG)
371 wakeup_setting &= ~MX6_BM_ID_WAKEUP;
372
373 if (data->ext_vbus || data->available_role == USB_DR_MODE_HOST)
374 wakeup_setting &= ~MX6_BM_VBUS_WAKEUP;
375
376 return wakeup_setting;
377}
378
379static int usbmisc_imx6q_set_wakeup
380 (struct imx_usbmisc_data *data, bool enabled)
381{
382 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
383 unsigned long flags;
384 u32 val;
385 int ret = 0;
386
387 if (data->index > 3)
388 return -EINVAL;
389
390 spin_lock_irqsave(&usbmisc->lock, flags);
391 val = readl(usbmisc->base + data->index * 4);
392 if (enabled) {
393 val &= ~MX6_USB_OTG_WAKEUP_BITS;
394 val |= usbmisc_wakeup_setting(data);
395 } else {
396 if (val & MX6_BM_WAKEUP_INTR)
397 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
398 val &= ~MX6_USB_OTG_WAKEUP_BITS;
399 }
400 writel(val, usbmisc->base + data->index * 4);
401 spin_unlock_irqrestore(&usbmisc->lock, flags);
402
403 return ret;
404}
405
406static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
407{
408 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
409 unsigned long flags;
410 u32 reg;
411
412 if (data->index > 3)
413 return -EINVAL;
414
415 spin_lock_irqsave(&usbmisc->lock, flags);
416
417 reg = readl(usbmisc->base + data->index * 4);
418 if (data->disable_oc) {
419 reg |= MX6_BM_OVER_CUR_DIS;
420 } else {
421 reg &= ~MX6_BM_OVER_CUR_DIS;
422
423 /*
424 * If the polarity is not configured keep it as setup by the
425 * bootloader.
426 */
427 if (data->oc_pol_configured && data->oc_pol_active_low)
428 reg |= MX6_BM_OVER_CUR_POLARITY;
429 else if (data->oc_pol_configured)
430 reg &= ~MX6_BM_OVER_CUR_POLARITY;
431 }
432 /* If the polarity is not set keep it as setup by the bootlader */
433 if (data->pwr_pol == 1)
434 reg |= MX6_BM_PWR_POLARITY;
435 writel(reg, usbmisc->base + data->index * 4);
436
437 /* SoC non-burst setting */
438 reg = readl(usbmisc->base + data->index * 4);
439 writel(reg | MX6_BM_NON_BURST_SETTING,
440 usbmisc->base + data->index * 4);
441
442 /* For HSIC controller */
443 if (data->hsic) {
444 reg = readl(usbmisc->base + data->index * 4);
445 writel(reg | MX6_BM_UTMI_ON_CLOCK,
446 usbmisc->base + data->index * 4);
447 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
448 + (data->index - 2) * 4);
449 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
450 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
451 + (data->index - 2) * 4);
452 }
453
454 spin_unlock_irqrestore(&usbmisc->lock, flags);
455
456 usbmisc_imx6q_set_wakeup(data, false);
457
458 return 0;
459}
460
461static int usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data *data)
462{
463 int offset, ret = 0;
464
465 if (data->index == 2 || data->index == 3) {
466 offset = (data->index - 2) * 4;
467 } else if (data->index == 0) {
468 /*
469 * For SoCs like i.MX7D and later, each USB controller has
470 * its own non-core register region. For SoCs before i.MX7D,
471 * the first two USB controllers are non-HSIC controllers.
472 */
473 offset = 0;
474 } else {
475 dev_err(data->dev, "index is error for usbmisc\n");
476 ret = -EINVAL;
477 }
478
479 return ret ? ret : offset;
480}
481
482static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data)
483{
484 unsigned long flags;
485 u32 val;
486 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
487 int offset;
488
489 spin_lock_irqsave(&usbmisc->lock, flags);
490 offset = usbmisc_imx6_hsic_get_reg_offset(data);
491 if (offset < 0) {
492 spin_unlock_irqrestore(&usbmisc->lock, flags);
493 return offset;
494 }
495
496 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
497 if (!(val & MX6_BM_HSIC_DEV_CONN))
498 writel(val | MX6_BM_HSIC_DEV_CONN,
499 usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
500
501 spin_unlock_irqrestore(&usbmisc->lock, flags);
502
503 return 0;
504}
505
506static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
507{
508 unsigned long flags;
509 u32 val;
510 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
511 int offset;
512
513 spin_lock_irqsave(&usbmisc->lock, flags);
514 offset = usbmisc_imx6_hsic_get_reg_offset(data);
515 if (offset < 0) {
516 spin_unlock_irqrestore(&usbmisc->lock, flags);
517 return offset;
518 }
519
520 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
521 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
522 if (on)
523 val |= MX6_BM_HSIC_CLK_ON;
524 else
525 val &= ~MX6_BM_HSIC_CLK_ON;
526
527 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
528 spin_unlock_irqrestore(&usbmisc->lock, flags);
529
530 return 0;
531}
532
533
534static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
535{
536 void __iomem *reg = NULL;
537 unsigned long flags;
538 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
539 u32 val;
540
541 usbmisc_imx6q_init(data);
542
543 if (data->index == 0 || data->index == 1) {
544 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
545 spin_lock_irqsave(&usbmisc->lock, flags);
546 /* Set vbus wakeup source as bvalid */
547 val = readl(reg);
548 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
549 /*
550 * Disable dp/dm wakeup in device mode when vbus is
551 * not there.
552 */
553 val = readl(usbmisc->base + data->index * 4);
554 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
555 usbmisc->base + data->index * 4);
556 spin_unlock_irqrestore(&usbmisc->lock, flags);
557 }
558
559 /* For HSIC controller */
560 if (data->hsic) {
561 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
562 val |= MX6SX_BM_HSIC_AUTO_RESUME;
563 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
564 }
565
566 return 0;
567}
568
569static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
570{
571 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
572 u32 reg;
573
574 /*
575 * Vybrid only has one misc register set, but in two different
576 * areas. These is reflected in two instances of this driver.
577 */
578 if (data->index >= 1)
579 return -EINVAL;
580
581 if (data->disable_oc) {
582 reg = readl(usbmisc->base);
583 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
584 }
585
586 return 0;
587}
588
589static int usbmisc_imx7d_set_wakeup
590 (struct imx_usbmisc_data *data, bool enabled)
591{
592 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
593 unsigned long flags;
594 u32 val;
595
596 spin_lock_irqsave(&usbmisc->lock, flags);
597 val = readl(usbmisc->base);
598 if (enabled) {
599 val &= ~MX6_USB_OTG_WAKEUP_BITS;
600 val |= usbmisc_wakeup_setting(data);
601 writel(val, usbmisc->base);
602 } else {
603 if (val & MX6_BM_WAKEUP_INTR)
604 dev_dbg(data->dev, "wakeup int\n");
605 writel(val & ~MX6_USB_OTG_WAKEUP_BITS, usbmisc->base);
606 }
607 spin_unlock_irqrestore(&usbmisc->lock, flags);
608
609 return 0;
610}
611
612static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
613{
614 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
615 unsigned long flags;
616 u32 reg;
617
618 if (data->index >= 1)
619 return -EINVAL;
620
621 spin_lock_irqsave(&usbmisc->lock, flags);
622 reg = readl(usbmisc->base);
623 if (data->disable_oc) {
624 reg |= MX6_BM_OVER_CUR_DIS;
625 } else {
626 reg &= ~MX6_BM_OVER_CUR_DIS;
627
628 /*
629 * If the polarity is not configured keep it as setup by the
630 * bootloader.
631 */
632 if (data->oc_pol_configured && data->oc_pol_active_low)
633 reg |= MX6_BM_OVER_CUR_POLARITY;
634 else if (data->oc_pol_configured)
635 reg &= ~MX6_BM_OVER_CUR_POLARITY;
636 }
637 /* If the polarity is not set keep it as setup by the bootlader */
638 if (data->pwr_pol == 1)
639 reg |= MX6_BM_PWR_POLARITY;
640 writel(reg, usbmisc->base);
641
642 /* SoC non-burst setting */
643 reg = readl(usbmisc->base);
644 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
645
646 if (!data->hsic) {
647 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
648 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
649 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID
650 | MX7D_USBNC_AUTO_RESUME,
651 usbmisc->base + MX7D_USBNC_USB_CTRL2);
652 }
653
654 spin_unlock_irqrestore(&usbmisc->lock, flags);
655
656 usbmisc_imx7d_set_wakeup(data, false);
657
658 return 0;
659}
660
661static int imx7d_charger_secondary_detection(struct imx_usbmisc_data *data)
662{
663 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
664 struct usb_phy *usb_phy = data->usb_phy;
665 int val;
666 unsigned long flags;
667
668 /* VDM_SRC is connected to D- and IDP_SINK is connected to D+ */
669 spin_lock_irqsave(&usbmisc->lock, flags);
670 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
671 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
672 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
673 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL,
674 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
675 spin_unlock_irqrestore(&usbmisc->lock, flags);
676
677 usleep_range(1000, 2000);
678
679 /*
680 * Per BC 1.2, check voltage of D+:
681 * DCP: if greater than VDAT_REF;
682 * CDP: if less than VDAT_REF.
683 */
684 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
685 if (val & MX7D_USB_OTG_PHY_STATUS_CHRGDET) {
686 dev_dbg(data->dev, "It is a dedicate charging port\n");
687 usb_phy->chg_type = DCP_TYPE;
688 } else {
689 dev_dbg(data->dev, "It is a charging downstream port\n");
690 usb_phy->chg_type = CDP_TYPE;
691 }
692
693 return 0;
694}
695
696static void imx7_disable_charger_detector(struct imx_usbmisc_data *data)
697{
698 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
699 unsigned long flags;
700 u32 val;
701
702 spin_lock_irqsave(&usbmisc->lock, flags);
703 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
704 val &= ~(MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB |
705 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
706 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
707 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL);
708 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
709
710 /* Set OPMODE to be 2'b00 and disable its override */
711 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
712 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
713 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
714
715 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
716 writel(val & ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
717 usbmisc->base + MX7D_USBNC_USB_CTRL2);
718 spin_unlock_irqrestore(&usbmisc->lock, flags);
719}
720
721static int imx7d_charger_data_contact_detect(struct imx_usbmisc_data *data)
722{
723 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
724 unsigned long flags;
725 u32 val;
726 int i, data_pin_contact_count = 0;
727
728 /* Enable Data Contact Detect (DCD) per the USB BC 1.2 */
729 spin_lock_irqsave(&usbmisc->lock, flags);
730 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
731 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
732 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
733 spin_unlock_irqrestore(&usbmisc->lock, flags);
734
735 for (i = 0; i < 100; i = i + 1) {
736 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
737 if (!(val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE0)) {
738 if (data_pin_contact_count++ > 5)
739 /* Data pin makes contact */
740 break;
741 usleep_range(5000, 10000);
742 } else {
743 data_pin_contact_count = 0;
744 usleep_range(5000, 6000);
745 }
746 }
747
748 /* Disable DCD after finished data contact check */
749 spin_lock_irqsave(&usbmisc->lock, flags);
750 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
751 writel(val & ~MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
752 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
753 spin_unlock_irqrestore(&usbmisc->lock, flags);
754
755 if (i == 100) {
756 dev_err(data->dev,
757 "VBUS is coming from a dedicated power supply.\n");
758 return -ENXIO;
759 }
760
761 return 0;
762}
763
764static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data)
765{
766 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
767 struct usb_phy *usb_phy = data->usb_phy;
768 unsigned long flags;
769 u32 val;
770
771 /* VDP_SRC is connected to D+ and IDM_SINK is connected to D- */
772 spin_lock_irqsave(&usbmisc->lock, flags);
773 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
774 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL;
775 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
776 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0,
777 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
778 spin_unlock_irqrestore(&usbmisc->lock, flags);
779
780 usleep_range(1000, 2000);
781
782 /* Check if D- is less than VDAT_REF to determine an SDP per BC 1.2 */
783 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
784 if (!(val & MX7D_USB_OTG_PHY_STATUS_CHRGDET)) {
785 dev_dbg(data->dev, "It is a standard downstream port\n");
786 usb_phy->chg_type = SDP_TYPE;
787 }
788
789 return 0;
790}
791
792/*
793 * Whole charger detection process:
794 * 1. OPMODE override to be non-driving
795 * 2. Data contact check
796 * 3. Primary detection
797 * 4. Secondary detection
798 * 5. Disable charger detection
799 */
800static int imx7d_charger_detection(struct imx_usbmisc_data *data)
801{
802 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
803 struct usb_phy *usb_phy = data->usb_phy;
804 unsigned long flags;
805 u32 val;
806 int ret;
807
808 /* Check if vbus is valid */
809 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
810 if (!(val & MX7D_USB_OTG_PHY_STATUS_VBUS_VLD)) {
811 dev_err(data->dev, "vbus is error\n");
812 return -EINVAL;
813 }
814
815 /*
816 * Keep OPMODE to be non-driving mode during the whole
817 * charger detection process.
818 */
819 spin_lock_irqsave(&usbmisc->lock, flags);
820 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
821 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
822 val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING;
823 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
824
825 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
826 writel(val | MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
827 usbmisc->base + MX7D_USBNC_USB_CTRL2);
828 spin_unlock_irqrestore(&usbmisc->lock, flags);
829
830 ret = imx7d_charger_data_contact_detect(data);
831 if (ret)
832 return ret;
833
834 ret = imx7d_charger_primary_detection(data);
835 if (!ret && usb_phy->chg_type != SDP_TYPE)
836 ret = imx7d_charger_secondary_detection(data);
837
838 imx7_disable_charger_detector(data);
839
840 return ret;
841}
842
843static int usbmisc_imx7ulp_init(struct imx_usbmisc_data *data)
844{
845 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
846 unsigned long flags;
847 u32 reg;
848
849 if (data->index >= 1)
850 return -EINVAL;
851
852 spin_lock_irqsave(&usbmisc->lock, flags);
853 reg = readl(usbmisc->base);
854 if (data->disable_oc) {
855 reg |= MX6_BM_OVER_CUR_DIS;
856 } else {
857 reg &= ~MX6_BM_OVER_CUR_DIS;
858
859 /*
860 * If the polarity is not configured keep it as setup by the
861 * bootloader.
862 */
863 if (data->oc_pol_configured && data->oc_pol_active_low)
864 reg |= MX6_BM_OVER_CUR_POLARITY;
865 else if (data->oc_pol_configured)
866 reg &= ~MX6_BM_OVER_CUR_POLARITY;
867 }
868 /* If the polarity is not set keep it as setup by the bootlader */
869 if (data->pwr_pol == 1)
870 reg |= MX6_BM_PWR_POLARITY;
871
872 writel(reg, usbmisc->base);
873
874 /* SoC non-burst setting */
875 reg = readl(usbmisc->base);
876 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
877
878 if (data->hsic) {
879 reg = readl(usbmisc->base);
880 writel(reg | MX6_BM_UTMI_ON_CLOCK, usbmisc->base);
881
882 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
883 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
884 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
885
886 /*
887 * For non-HSIC controller, the autoresume is enabled
888 * at MXS PHY driver (usbphy_ctrl bit18).
889 */
890 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
891 writel(reg | MX7D_USBNC_AUTO_RESUME,
892 usbmisc->base + MX7D_USBNC_USB_CTRL2);
893 } else {
894 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
895 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
896 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
897 usbmisc->base + MX7D_USBNC_USB_CTRL2);
898 }
899
900 spin_unlock_irqrestore(&usbmisc->lock, flags);
901
902 usbmisc_imx7d_set_wakeup(data, false);
903
904 return 0;
905}
906
907static const struct usbmisc_ops imx25_usbmisc_ops = {
908 .init = usbmisc_imx25_init,
909 .post = usbmisc_imx25_post,
910};
911
912static const struct usbmisc_ops imx27_usbmisc_ops = {
913 .init = usbmisc_imx27_init,
914};
915
916static const struct usbmisc_ops imx51_usbmisc_ops = {
917 .init = usbmisc_imx53_init,
918};
919
920static const struct usbmisc_ops imx53_usbmisc_ops = {
921 .init = usbmisc_imx53_init,
922};
923
924static const struct usbmisc_ops imx6q_usbmisc_ops = {
925 .set_wakeup = usbmisc_imx6q_set_wakeup,
926 .init = usbmisc_imx6q_init,
927 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
928 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
929};
930
931static const struct usbmisc_ops vf610_usbmisc_ops = {
932 .init = usbmisc_vf610_init,
933};
934
935static const struct usbmisc_ops imx6sx_usbmisc_ops = {
936 .set_wakeup = usbmisc_imx6q_set_wakeup,
937 .init = usbmisc_imx6sx_init,
938 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
939 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
940};
941
942static const struct usbmisc_ops imx7d_usbmisc_ops = {
943 .init = usbmisc_imx7d_init,
944 .set_wakeup = usbmisc_imx7d_set_wakeup,
945 .charger_detection = imx7d_charger_detection,
946};
947
948static const struct usbmisc_ops imx7ulp_usbmisc_ops = {
949 .init = usbmisc_imx7ulp_init,
950 .set_wakeup = usbmisc_imx7d_set_wakeup,
951 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
952 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
953};
954
955static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
956{
957 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
958
959 return usbmisc->ops == &imx53_usbmisc_ops;
960}
961
962int imx_usbmisc_init(struct imx_usbmisc_data *data)
963{
964 struct imx_usbmisc *usbmisc;
965
966 if (!data)
967 return 0;
968
969 usbmisc = dev_get_drvdata(data->dev);
970 if (!usbmisc->ops->init)
971 return 0;
972 return usbmisc->ops->init(data);
973}
974EXPORT_SYMBOL_GPL(imx_usbmisc_init);
975
976int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
977{
978 struct imx_usbmisc *usbmisc;
979
980 if (!data)
981 return 0;
982
983 usbmisc = dev_get_drvdata(data->dev);
984 if (!usbmisc->ops->post)
985 return 0;
986 return usbmisc->ops->post(data);
987}
988EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
989
990int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
991{
992 struct imx_usbmisc *usbmisc;
993
994 if (!data)
995 return 0;
996
997 usbmisc = dev_get_drvdata(data->dev);
998 if (!usbmisc->ops->set_wakeup)
999 return 0;
1000 return usbmisc->ops->set_wakeup(data, enabled);
1001}
1002EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
1003
1004int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data)
1005{
1006 struct imx_usbmisc *usbmisc;
1007
1008 if (!data)
1009 return 0;
1010
1011 usbmisc = dev_get_drvdata(data->dev);
1012 if (!usbmisc->ops->hsic_set_connect || !data->hsic)
1013 return 0;
1014 return usbmisc->ops->hsic_set_connect(data);
1015}
1016EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect);
1017
1018int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
1019{
1020 struct imx_usbmisc *usbmisc;
1021
1022 if (!data)
1023 return 0;
1024
1025 usbmisc = dev_get_drvdata(data->dev);
1026 if (!usbmisc->ops->hsic_set_clk || !data->hsic)
1027 return 0;
1028 return usbmisc->ops->hsic_set_clk(data, on);
1029}
1030EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_clk);
1031
1032int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect)
1033{
1034 struct imx_usbmisc *usbmisc;
1035 struct usb_phy *usb_phy;
1036 int ret = 0;
1037
1038 if (!data)
1039 return -EINVAL;
1040
1041 usbmisc = dev_get_drvdata(data->dev);
1042 usb_phy = data->usb_phy;
1043 if (!usbmisc->ops->charger_detection)
1044 return -ENOTSUPP;
1045
1046 if (connect) {
1047 ret = usbmisc->ops->charger_detection(data);
1048 if (ret) {
1049 dev_err(data->dev,
1050 "Error occurs during detection: %d\n",
1051 ret);
1052 usb_phy->chg_state = USB_CHARGER_ABSENT;
1053 } else {
1054 usb_phy->chg_state = USB_CHARGER_PRESENT;
1055 }
1056 } else {
1057 usb_phy->chg_state = USB_CHARGER_ABSENT;
1058 usb_phy->chg_type = UNKNOWN_TYPE;
1059 }
1060 return ret;
1061}
1062EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection);
1063
1064static const struct of_device_id usbmisc_imx_dt_ids[] = {
1065 {
1066 .compatible = "fsl,imx25-usbmisc",
1067 .data = &imx25_usbmisc_ops,
1068 },
1069 {
1070 .compatible = "fsl,imx35-usbmisc",
1071 .data = &imx25_usbmisc_ops,
1072 },
1073 {
1074 .compatible = "fsl,imx27-usbmisc",
1075 .data = &imx27_usbmisc_ops,
1076 },
1077 {
1078 .compatible = "fsl,imx51-usbmisc",
1079 .data = &imx51_usbmisc_ops,
1080 },
1081 {
1082 .compatible = "fsl,imx53-usbmisc",
1083 .data = &imx53_usbmisc_ops,
1084 },
1085 {
1086 .compatible = "fsl,imx6q-usbmisc",
1087 .data = &imx6q_usbmisc_ops,
1088 },
1089 {
1090 .compatible = "fsl,vf610-usbmisc",
1091 .data = &vf610_usbmisc_ops,
1092 },
1093 {
1094 .compatible = "fsl,imx6sx-usbmisc",
1095 .data = &imx6sx_usbmisc_ops,
1096 },
1097 {
1098 .compatible = "fsl,imx6ul-usbmisc",
1099 .data = &imx6sx_usbmisc_ops,
1100 },
1101 {
1102 .compatible = "fsl,imx7d-usbmisc",
1103 .data = &imx7d_usbmisc_ops,
1104 },
1105 {
1106 .compatible = "fsl,imx7ulp-usbmisc",
1107 .data = &imx7ulp_usbmisc_ops,
1108 },
1109 { /* sentinel */ }
1110};
1111MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
1112
1113static int usbmisc_imx_probe(struct platform_device *pdev)
1114{
1115 struct imx_usbmisc *data;
1116 const struct of_device_id *of_id;
1117
1118 of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
1119 if (!of_id)
1120 return -ENODEV;
1121
1122 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
1123 if (!data)
1124 return -ENOMEM;
1125
1126 spin_lock_init(&data->lock);
1127
1128 data->base = devm_platform_ioremap_resource(pdev, 0);
1129 if (IS_ERR(data->base))
1130 return PTR_ERR(data->base);
1131
1132 data->ops = (const struct usbmisc_ops *)of_id->data;
1133 platform_set_drvdata(pdev, data);
1134
1135 return 0;
1136}
1137
1138static int usbmisc_imx_remove(struct platform_device *pdev)
1139{
1140 return 0;
1141}
1142
1143static struct platform_driver usbmisc_imx_driver = {
1144 .probe = usbmisc_imx_probe,
1145 .remove = usbmisc_imx_remove,
1146 .driver = {
1147 .name = "usbmisc_imx",
1148 .of_match_table = usbmisc_imx_dt_ids,
1149 },
1150};
1151
1152module_platform_driver(usbmisc_imx_driver);
1153
1154MODULE_ALIAS("platform:usbmisc-imx");
1155MODULE_LICENSE("GPL");
1156MODULE_DESCRIPTION("driver for imx usb non-core registers");
1157MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
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_PWR_POLARITY BIT(9)
67#define MX6_BM_WAKEUP_ENABLE BIT(10)
68#define MX6_BM_UTMI_ON_CLOCK BIT(13)
69#define MX6_BM_ID_WAKEUP BIT(16)
70#define MX6_BM_VBUS_WAKEUP BIT(17)
71#define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
72#define MX6_BM_WAKEUP_INTR BIT(31)
73
74#define MX6_USB_HSIC_CTRL_OFFSET 0x10
75/* Send resume signal without 480Mhz PHY clock */
76#define MX6SX_BM_HSIC_AUTO_RESUME BIT(23)
77/* set before portsc.suspendM = 1 */
78#define MX6_BM_HSIC_DEV_CONN BIT(21)
79/* HSIC enable */
80#define MX6_BM_HSIC_EN BIT(12)
81/* Force HSIC module 480M clock on, even when in Host is in suspend mode */
82#define MX6_BM_HSIC_CLK_ON BIT(11)
83
84#define MX6_USB_OTG1_PHY_CTRL 0x18
85/* For imx6dql, it is host-only controller, for later imx6, it is otg's */
86#define MX6_USB_OTG2_PHY_CTRL 0x1c
87#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
88#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
89#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
90#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
91#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
92
93#define VF610_OVER_CUR_DIS BIT(7)
94
95#define MX7D_USBNC_USB_CTRL2 0x4
96#define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3
97#define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0)
98#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0)
99#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
100#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
101#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
102
103struct usbmisc_ops {
104 /* It's called once when probe a usb device */
105 int (*init)(struct imx_usbmisc_data *data);
106 /* It's called once after adding a usb device */
107 int (*post)(struct imx_usbmisc_data *data);
108 /* It's called when we need to enable/disable usb wakeup */
109 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
110 /* It's called before setting portsc.suspendM */
111 int (*hsic_set_connect)(struct imx_usbmisc_data *data);
112 /* It's called during suspend/resume */
113 int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled);
114};
115
116struct imx_usbmisc {
117 void __iomem *base;
118 spinlock_t lock;
119 const struct usbmisc_ops *ops;
120};
121
122static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
123
124static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
125{
126 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
127 unsigned long flags;
128 u32 val = 0;
129
130 if (data->index > 1)
131 return -EINVAL;
132
133 spin_lock_irqsave(&usbmisc->lock, flags);
134 switch (data->index) {
135 case 0:
136 val = readl(usbmisc->base);
137 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
138 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
139 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
140
141 /*
142 * If the polarity is not configured assume active high for
143 * historical reasons.
144 */
145 if (data->oc_pol_configured && data->oc_pol_active_low)
146 val &= ~MX25_OTG_OCPOL_BIT;
147
148 writel(val, usbmisc->base);
149 break;
150 case 1:
151 val = readl(usbmisc->base);
152 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
153 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
154 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
155 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
156
157 /*
158 * If the polarity is not configured assume active high for
159 * historical reasons.
160 */
161 if (data->oc_pol_configured && data->oc_pol_active_low)
162 val &= ~MX25_H1_OCPOL_BIT;
163
164 writel(val, usbmisc->base);
165
166 break;
167 }
168 spin_unlock_irqrestore(&usbmisc->lock, flags);
169
170 return 0;
171}
172
173static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
174{
175 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
176 void __iomem *reg;
177 unsigned long flags;
178 u32 val;
179
180 if (data->index > 2)
181 return -EINVAL;
182
183 if (data->index)
184 return 0;
185
186 spin_lock_irqsave(&usbmisc->lock, flags);
187 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
188 val = readl(reg);
189
190 if (data->evdo)
191 val |= MX25_BM_EXTERNAL_VBUS_DIVIDER;
192 else
193 val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER;
194
195 writel(val, reg);
196 spin_unlock_irqrestore(&usbmisc->lock, flags);
197 usleep_range(5000, 10000); /* needed to stabilize voltage */
198
199 return 0;
200}
201
202static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
203{
204 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
205 unsigned long flags;
206 u32 val;
207
208 switch (data->index) {
209 case 0:
210 val = MX27_OTG_PM_BIT;
211 break;
212 case 1:
213 val = MX27_H1_PM_BIT;
214 break;
215 case 2:
216 val = MX27_H2_PM_BIT;
217 break;
218 default:
219 return -EINVAL;
220 }
221
222 spin_lock_irqsave(&usbmisc->lock, flags);
223 if (data->disable_oc)
224 val = readl(usbmisc->base) | val;
225 else
226 val = readl(usbmisc->base) & ~val;
227 writel(val, usbmisc->base);
228 spin_unlock_irqrestore(&usbmisc->lock, flags);
229
230 return 0;
231}
232
233static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
234{
235 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
236 void __iomem *reg = NULL;
237 unsigned long flags;
238 u32 val = 0;
239
240 if (data->index > 3)
241 return -EINVAL;
242
243 /* Select a 24 MHz reference clock for the PHY */
244 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
245 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
246 val |= MX53_USB_PLL_DIV_24_MHZ;
247 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
248
249 spin_lock_irqsave(&usbmisc->lock, flags);
250
251 switch (data->index) {
252 case 0:
253 if (data->disable_oc) {
254 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
255 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
256 writel(val, reg);
257 }
258 break;
259 case 1:
260 if (data->disable_oc) {
261 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
262 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
263 writel(val, reg);
264 }
265 break;
266 case 2:
267 if (data->ulpi) {
268 /* set USBH2 into ULPI-mode. */
269 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
270 val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
271 /* select ULPI clock */
272 val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
273 val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
274 writel(val, reg);
275 /* Set interrupt wake up enable */
276 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
277 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
278 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
279 writel(val, reg);
280 if (is_imx53_usbmisc(data)) {
281 /* Disable internal 60Mhz clock */
282 reg = usbmisc->base +
283 MX53_USB_CLKONOFF_CTRL_OFFSET;
284 val = readl(reg) |
285 MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
286 writel(val, reg);
287 }
288
289 }
290 if (data->disable_oc) {
291 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
292 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
293 writel(val, reg);
294 }
295 break;
296 case 3:
297 if (data->ulpi) {
298 /* set USBH3 into ULPI-mode. */
299 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
300 val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
301 /* select ULPI clock */
302 val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
303 val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
304 writel(val, reg);
305 /* Set interrupt wake up enable */
306 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
307 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
308 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
309 writel(val, reg);
310
311 if (is_imx53_usbmisc(data)) {
312 /* Disable internal 60Mhz clock */
313 reg = usbmisc->base +
314 MX53_USB_CLKONOFF_CTRL_OFFSET;
315 val = readl(reg) |
316 MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
317 writel(val, reg);
318 }
319 }
320 if (data->disable_oc) {
321 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
322 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
323 writel(val, reg);
324 }
325 break;
326 }
327
328 spin_unlock_irqrestore(&usbmisc->lock, flags);
329
330 return 0;
331}
332
333static int usbmisc_imx6q_set_wakeup
334 (struct imx_usbmisc_data *data, bool enabled)
335{
336 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
337 unsigned long flags;
338 u32 val;
339 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
340 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
341 int ret = 0;
342
343 if (data->index > 3)
344 return -EINVAL;
345
346 spin_lock_irqsave(&usbmisc->lock, flags);
347 val = readl(usbmisc->base + data->index * 4);
348 if (enabled) {
349 val |= wakeup_setting;
350 } else {
351 if (val & MX6_BM_WAKEUP_INTR)
352 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
353 val &= ~wakeup_setting;
354 }
355 writel(val, usbmisc->base + data->index * 4);
356 spin_unlock_irqrestore(&usbmisc->lock, flags);
357
358 return ret;
359}
360
361static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
362{
363 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
364 unsigned long flags;
365 u32 reg;
366
367 if (data->index > 3)
368 return -EINVAL;
369
370 spin_lock_irqsave(&usbmisc->lock, flags);
371
372 reg = readl(usbmisc->base + data->index * 4);
373 if (data->disable_oc) {
374 reg |= MX6_BM_OVER_CUR_DIS;
375 } else {
376 reg &= ~MX6_BM_OVER_CUR_DIS;
377
378 /*
379 * If the polarity is not configured keep it as setup by the
380 * bootloader.
381 */
382 if (data->oc_pol_configured && data->oc_pol_active_low)
383 reg |= MX6_BM_OVER_CUR_POLARITY;
384 else if (data->oc_pol_configured)
385 reg &= ~MX6_BM_OVER_CUR_POLARITY;
386 }
387 /* If the polarity is not set keep it as setup by the bootlader */
388 if (data->pwr_pol == 1)
389 reg |= MX6_BM_PWR_POLARITY;
390 writel(reg, usbmisc->base + data->index * 4);
391
392 /* SoC non-burst setting */
393 reg = readl(usbmisc->base + data->index * 4);
394 writel(reg | MX6_BM_NON_BURST_SETTING,
395 usbmisc->base + data->index * 4);
396
397 /* For HSIC controller */
398 if (data->hsic) {
399 reg = readl(usbmisc->base + data->index * 4);
400 writel(reg | MX6_BM_UTMI_ON_CLOCK,
401 usbmisc->base + data->index * 4);
402 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
403 + (data->index - 2) * 4);
404 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
405 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
406 + (data->index - 2) * 4);
407 }
408
409 spin_unlock_irqrestore(&usbmisc->lock, flags);
410
411 usbmisc_imx6q_set_wakeup(data, false);
412
413 return 0;
414}
415
416static int usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data *data)
417{
418 int offset, ret = 0;
419
420 if (data->index == 2 || data->index == 3) {
421 offset = (data->index - 2) * 4;
422 } else if (data->index == 0) {
423 /*
424 * For SoCs like i.MX7D and later, each USB controller has
425 * its own non-core register region. For SoCs before i.MX7D,
426 * the first two USB controllers are non-HSIC controllers.
427 */
428 offset = 0;
429 } else {
430 dev_err(data->dev, "index is error for usbmisc\n");
431 ret = -EINVAL;
432 }
433
434 return ret ? ret : offset;
435}
436
437static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data)
438{
439 unsigned long flags;
440 u32 val;
441 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
442 int offset;
443
444 spin_lock_irqsave(&usbmisc->lock, flags);
445 offset = usbmisc_imx6_hsic_get_reg_offset(data);
446 if (offset < 0) {
447 spin_unlock_irqrestore(&usbmisc->lock, flags);
448 return offset;
449 }
450
451 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
452 if (!(val & MX6_BM_HSIC_DEV_CONN))
453 writel(val | MX6_BM_HSIC_DEV_CONN,
454 usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
455
456 spin_unlock_irqrestore(&usbmisc->lock, flags);
457
458 return 0;
459}
460
461static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
462{
463 unsigned long flags;
464 u32 val;
465 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
466 int offset;
467
468 spin_lock_irqsave(&usbmisc->lock, flags);
469 offset = usbmisc_imx6_hsic_get_reg_offset(data);
470 if (offset < 0) {
471 spin_unlock_irqrestore(&usbmisc->lock, flags);
472 return offset;
473 }
474
475 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
476 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
477 if (on)
478 val |= MX6_BM_HSIC_CLK_ON;
479 else
480 val &= ~MX6_BM_HSIC_CLK_ON;
481
482 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
483 spin_unlock_irqrestore(&usbmisc->lock, flags);
484
485 return 0;
486}
487
488
489static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
490{
491 void __iomem *reg = NULL;
492 unsigned long flags;
493 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
494 u32 val;
495
496 usbmisc_imx6q_init(data);
497
498 if (data->index == 0 || data->index == 1) {
499 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
500 spin_lock_irqsave(&usbmisc->lock, flags);
501 /* Set vbus wakeup source as bvalid */
502 val = readl(reg);
503 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
504 /*
505 * Disable dp/dm wakeup in device mode when vbus is
506 * not there.
507 */
508 val = readl(usbmisc->base + data->index * 4);
509 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
510 usbmisc->base + data->index * 4);
511 spin_unlock_irqrestore(&usbmisc->lock, flags);
512 }
513
514 /* For HSIC controller */
515 if (data->hsic) {
516 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
517 val |= MX6SX_BM_HSIC_AUTO_RESUME;
518 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
519 }
520
521 return 0;
522}
523
524static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
525{
526 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
527 u32 reg;
528
529 /*
530 * Vybrid only has one misc register set, but in two different
531 * areas. These is reflected in two instances of this driver.
532 */
533 if (data->index >= 1)
534 return -EINVAL;
535
536 if (data->disable_oc) {
537 reg = readl(usbmisc->base);
538 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
539 }
540
541 return 0;
542}
543
544static int usbmisc_imx7d_set_wakeup
545 (struct imx_usbmisc_data *data, bool enabled)
546{
547 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
548 unsigned long flags;
549 u32 val;
550 u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
551 MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
552
553 spin_lock_irqsave(&usbmisc->lock, flags);
554 val = readl(usbmisc->base);
555 if (enabled) {
556 writel(val | wakeup_setting, usbmisc->base);
557 } else {
558 if (val & MX6_BM_WAKEUP_INTR)
559 dev_dbg(data->dev, "wakeup int\n");
560 writel(val & ~wakeup_setting, usbmisc->base);
561 }
562 spin_unlock_irqrestore(&usbmisc->lock, flags);
563
564 return 0;
565}
566
567static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
568{
569 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
570 unsigned long flags;
571 u32 reg;
572
573 if (data->index >= 1)
574 return -EINVAL;
575
576 spin_lock_irqsave(&usbmisc->lock, flags);
577 reg = readl(usbmisc->base);
578 if (data->disable_oc) {
579 reg |= MX6_BM_OVER_CUR_DIS;
580 } else {
581 reg &= ~MX6_BM_OVER_CUR_DIS;
582
583 /*
584 * If the polarity is not configured keep it as setup by the
585 * bootloader.
586 */
587 if (data->oc_pol_configured && data->oc_pol_active_low)
588 reg |= MX6_BM_OVER_CUR_POLARITY;
589 else if (data->oc_pol_configured)
590 reg &= ~MX6_BM_OVER_CUR_POLARITY;
591 }
592 /* If the polarity is not set keep it as setup by the bootlader */
593 if (data->pwr_pol == 1)
594 reg |= MX6_BM_PWR_POLARITY;
595 writel(reg, usbmisc->base);
596
597 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
598 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
599 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
600 usbmisc->base + MX7D_USBNC_USB_CTRL2);
601
602 spin_unlock_irqrestore(&usbmisc->lock, flags);
603
604 usbmisc_imx7d_set_wakeup(data, false);
605
606 return 0;
607}
608
609static const struct usbmisc_ops imx25_usbmisc_ops = {
610 .init = usbmisc_imx25_init,
611 .post = usbmisc_imx25_post,
612};
613
614static const struct usbmisc_ops imx27_usbmisc_ops = {
615 .init = usbmisc_imx27_init,
616};
617
618static const struct usbmisc_ops imx51_usbmisc_ops = {
619 .init = usbmisc_imx53_init,
620};
621
622static const struct usbmisc_ops imx53_usbmisc_ops = {
623 .init = usbmisc_imx53_init,
624};
625
626static const struct usbmisc_ops imx6q_usbmisc_ops = {
627 .set_wakeup = usbmisc_imx6q_set_wakeup,
628 .init = usbmisc_imx6q_init,
629 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
630 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
631};
632
633static const struct usbmisc_ops vf610_usbmisc_ops = {
634 .init = usbmisc_vf610_init,
635};
636
637static const struct usbmisc_ops imx6sx_usbmisc_ops = {
638 .set_wakeup = usbmisc_imx6q_set_wakeup,
639 .init = usbmisc_imx6sx_init,
640 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
641 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
642};
643
644static const struct usbmisc_ops imx7d_usbmisc_ops = {
645 .init = usbmisc_imx7d_init,
646 .set_wakeup = usbmisc_imx7d_set_wakeup,
647};
648
649static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
650{
651 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
652
653 return usbmisc->ops == &imx53_usbmisc_ops;
654}
655
656int imx_usbmisc_init(struct imx_usbmisc_data *data)
657{
658 struct imx_usbmisc *usbmisc;
659
660 if (!data)
661 return 0;
662
663 usbmisc = dev_get_drvdata(data->dev);
664 if (!usbmisc->ops->init)
665 return 0;
666 return usbmisc->ops->init(data);
667}
668EXPORT_SYMBOL_GPL(imx_usbmisc_init);
669
670int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
671{
672 struct imx_usbmisc *usbmisc;
673
674 if (!data)
675 return 0;
676
677 usbmisc = dev_get_drvdata(data->dev);
678 if (!usbmisc->ops->post)
679 return 0;
680 return usbmisc->ops->post(data);
681}
682EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
683
684int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
685{
686 struct imx_usbmisc *usbmisc;
687
688 if (!data)
689 return 0;
690
691 usbmisc = dev_get_drvdata(data->dev);
692 if (!usbmisc->ops->set_wakeup)
693 return 0;
694 return usbmisc->ops->set_wakeup(data, enabled);
695}
696EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
697
698int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data)
699{
700 struct imx_usbmisc *usbmisc;
701
702 if (!data)
703 return 0;
704
705 usbmisc = dev_get_drvdata(data->dev);
706 if (!usbmisc->ops->hsic_set_connect || !data->hsic)
707 return 0;
708 return usbmisc->ops->hsic_set_connect(data);
709}
710EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect);
711
712int imx_usbmisc_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
713{
714 struct imx_usbmisc *usbmisc;
715
716 if (!data)
717 return 0;
718
719 usbmisc = dev_get_drvdata(data->dev);
720 if (!usbmisc->ops->hsic_set_clk || !data->hsic)
721 return 0;
722 return usbmisc->ops->hsic_set_clk(data, on);
723}
724EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_clk);
725static const struct of_device_id usbmisc_imx_dt_ids[] = {
726 {
727 .compatible = "fsl,imx25-usbmisc",
728 .data = &imx25_usbmisc_ops,
729 },
730 {
731 .compatible = "fsl,imx35-usbmisc",
732 .data = &imx25_usbmisc_ops,
733 },
734 {
735 .compatible = "fsl,imx27-usbmisc",
736 .data = &imx27_usbmisc_ops,
737 },
738 {
739 .compatible = "fsl,imx51-usbmisc",
740 .data = &imx51_usbmisc_ops,
741 },
742 {
743 .compatible = "fsl,imx53-usbmisc",
744 .data = &imx53_usbmisc_ops,
745 },
746 {
747 .compatible = "fsl,imx6q-usbmisc",
748 .data = &imx6q_usbmisc_ops,
749 },
750 {
751 .compatible = "fsl,vf610-usbmisc",
752 .data = &vf610_usbmisc_ops,
753 },
754 {
755 .compatible = "fsl,imx6sx-usbmisc",
756 .data = &imx6sx_usbmisc_ops,
757 },
758 {
759 .compatible = "fsl,imx6ul-usbmisc",
760 .data = &imx6sx_usbmisc_ops,
761 },
762 {
763 .compatible = "fsl,imx7d-usbmisc",
764 .data = &imx7d_usbmisc_ops,
765 },
766 {
767 .compatible = "fsl,imx7ulp-usbmisc",
768 .data = &imx7d_usbmisc_ops,
769 },
770 { /* sentinel */ }
771};
772MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
773
774static int usbmisc_imx_probe(struct platform_device *pdev)
775{
776 struct imx_usbmisc *data;
777 const struct of_device_id *of_id;
778
779 of_id = of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
780 if (!of_id)
781 return -ENODEV;
782
783 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
784 if (!data)
785 return -ENOMEM;
786
787 spin_lock_init(&data->lock);
788
789 data->base = devm_platform_ioremap_resource(pdev, 0);
790 if (IS_ERR(data->base))
791 return PTR_ERR(data->base);
792
793 data->ops = (const struct usbmisc_ops *)of_id->data;
794 platform_set_drvdata(pdev, data);
795
796 return 0;
797}
798
799static int usbmisc_imx_remove(struct platform_device *pdev)
800{
801 return 0;
802}
803
804static struct platform_driver usbmisc_imx_driver = {
805 .probe = usbmisc_imx_probe,
806 .remove = usbmisc_imx_remove,
807 .driver = {
808 .name = "usbmisc_imx",
809 .of_match_table = usbmisc_imx_dt_ids,
810 },
811};
812
813module_platform_driver(usbmisc_imx_driver);
814
815MODULE_ALIAS("platform:usbmisc-imx");
816MODULE_LICENSE("GPL");
817MODULE_DESCRIPTION("driver for imx usb non-core registers");
818MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");