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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.h>
8#include <linux/err.h>
9#include <linux/io.h>
10#include <linux/delay.h>
11#include <linux/platform_device.h>
12#include <linux/usb/otg.h>
13
14#include "ci_hdrc_imx.h"
15
16#define MX25_USB_PHY_CTRL_OFFSET 0x08
17#define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
18
19#define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0)
20#define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0)
21#define MX25_EHCI_INTERFACE_MASK (0xf)
22
23#define MX25_OTG_SIC_SHIFT 29
24#define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT)
25#define MX25_OTG_PM_BIT BIT(24)
26#define MX25_OTG_PP_BIT BIT(11)
27#define MX25_OTG_OCPOL_BIT BIT(3)
28
29#define MX25_H1_SIC_SHIFT 21
30#define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT)
31#define MX25_H1_PP_BIT BIT(18)
32#define MX25_H1_PM_BIT BIT(16)
33#define MX25_H1_IPPUE_UP_BIT BIT(7)
34#define MX25_H1_IPPUE_DOWN_BIT BIT(6)
35#define MX25_H1_TLL_BIT BIT(5)
36#define MX25_H1_USBTE_BIT BIT(4)
37#define MX25_H1_OCPOL_BIT BIT(2)
38
39#define MX27_H1_PM_BIT BIT(8)
40#define MX27_H2_PM_BIT BIT(16)
41#define MX27_OTG_PM_BIT BIT(24)
42
43#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08
44#define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c
45#define MX53_USB_CTRL_1_OFFSET 0x10
46#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK (0x11 << 2)
47#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI BIT(2)
48#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK (0x11 << 6)
49#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
50#define MX53_USB_UH2_CTRL_OFFSET 0x14
51#define MX53_USB_UH3_CTRL_OFFSET 0x18
52#define MX53_USB_CLKONOFF_CTRL_OFFSET 0x24
53#define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21)
54#define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22)
55#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
56#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
57#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
58#define MX53_USB_CTRL_1_UH2_ULPI_EN BIT(26)
59#define MX53_USB_CTRL_1_UH3_ULPI_EN BIT(27)
60#define MX53_USB_UHx_CTRL_WAKE_UP_EN BIT(7)
61#define MX53_USB_UHx_CTRL_ULPI_INT_EN BIT(8)
62#define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3
63#define MX53_USB_PLL_DIV_24_MHZ 0x01
64
65#define MX6_BM_NON_BURST_SETTING BIT(1)
66#define MX6_BM_OVER_CUR_DIS BIT(7)
67#define MX6_BM_OVER_CUR_POLARITY BIT(8)
68#define MX6_BM_PWR_POLARITY BIT(9)
69#define MX6_BM_WAKEUP_ENABLE BIT(10)
70#define MX6_BM_UTMI_ON_CLOCK BIT(13)
71#define MX6_BM_ID_WAKEUP BIT(16)
72#define MX6_BM_VBUS_WAKEUP BIT(17)
73#define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
74#define MX6_BM_WAKEUP_INTR BIT(31)
75
76#define MX6_USB_HSIC_CTRL_OFFSET 0x10
77/* Send resume signal without 480Mhz PHY clock */
78#define MX6SX_BM_HSIC_AUTO_RESUME BIT(23)
79/* set before portsc.suspendM = 1 */
80#define MX6_BM_HSIC_DEV_CONN BIT(21)
81/* HSIC enable */
82#define MX6_BM_HSIC_EN BIT(12)
83/* Force HSIC module 480M clock on, even when in Host is in suspend mode */
84#define MX6_BM_HSIC_CLK_ON BIT(11)
85
86#define MX6_USB_OTG1_PHY_CTRL 0x18
87/* For imx6dql, it is host-only controller, for later imx6, it is otg's */
88#define MX6_USB_OTG2_PHY_CTRL 0x1c
89#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
90#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
91#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
92#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
93#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
94
95#define VF610_OVER_CUR_DIS BIT(7)
96
97#define MX7D_USBNC_USB_CTRL2 0x4
98#define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3
99#define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0)
100#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0)
101#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1)
102#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2)
103#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3)
104#define MX7D_USBNC_AUTO_RESUME BIT(2)
105/* The default DM/DP value is pull-down */
106#define MX7D_USBNC_USB_CTRL2_OPMODE(v) (v << 6)
107#define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING MX7D_USBNC_USB_CTRL2_OPMODE(1)
108#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK (BIT(7) | BIT(6))
109#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN BIT(8)
110#define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_VAL BIT(12)
111#define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_EN BIT(13)
112#define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_VAL BIT(14)
113#define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_EN BIT(15)
114#define MX7D_USBNC_USB_CTRL2_DP_DM_MASK (BIT(12) | BIT(13) | \
115 BIT(14) | BIT(15))
116
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 MX7D_USB_OTG_PHY_CFG1 0x30
132#define TXPREEMPAMPTUNE0_BIT 28
133#define TXPREEMPAMPTUNE0_MASK (3 << 28)
134#define TXRISETUNE0_BIT 24
135#define TXRISETUNE0_MASK (3 << 24)
136#define TXVREFTUNE0_BIT 20
137#define TXVREFTUNE0_MASK (0xf << 20)
138
139#define MX6_USB_OTG_WAKEUP_BITS (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | \
140 MX6_BM_ID_WAKEUP | MX6SX_BM_DPDM_WAKEUP_EN)
141
142struct usbmisc_ops {
143 /* It's called once when probe a usb device */
144 int (*init)(struct imx_usbmisc_data *data);
145 /* It's called once after adding a usb device */
146 int (*post)(struct imx_usbmisc_data *data);
147 /* It's called when we need to enable/disable usb wakeup */
148 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
149 /* It's called before setting portsc.suspendM */
150 int (*hsic_set_connect)(struct imx_usbmisc_data *data);
151 /* It's called during suspend/resume */
152 int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled);
153 /* usb charger detection */
154 int (*charger_detection)(struct imx_usbmisc_data *data);
155 /* It's called when system resume from usb power lost */
156 int (*power_lost_check)(struct imx_usbmisc_data *data);
157 void (*vbus_comparator_on)(struct imx_usbmisc_data *data, bool on);
158};
159
160struct imx_usbmisc {
161 void __iomem *base;
162 spinlock_t lock;
163 const struct usbmisc_ops *ops;
164};
165
166static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
167
168static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
169{
170 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
171 unsigned long flags;
172 u32 val = 0;
173
174 if (data->index > 1)
175 return -EINVAL;
176
177 spin_lock_irqsave(&usbmisc->lock, flags);
178 switch (data->index) {
179 case 0:
180 val = readl(usbmisc->base);
181 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
182 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
183 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
184
185 /*
186 * If the polarity is not configured assume active high for
187 * historical reasons.
188 */
189 if (data->oc_pol_configured && data->oc_pol_active_low)
190 val &= ~MX25_OTG_OCPOL_BIT;
191
192 writel(val, usbmisc->base);
193 break;
194 case 1:
195 val = readl(usbmisc->base);
196 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
197 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
198 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
199 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
200
201 /*
202 * If the polarity is not configured assume active high for
203 * historical reasons.
204 */
205 if (data->oc_pol_configured && data->oc_pol_active_low)
206 val &= ~MX25_H1_OCPOL_BIT;
207
208 writel(val, usbmisc->base);
209
210 break;
211 }
212 spin_unlock_irqrestore(&usbmisc->lock, flags);
213
214 return 0;
215}
216
217static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
218{
219 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
220 void __iomem *reg;
221 unsigned long flags;
222 u32 val;
223
224 if (data->index > 2)
225 return -EINVAL;
226
227 if (data->index)
228 return 0;
229
230 spin_lock_irqsave(&usbmisc->lock, flags);
231 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
232 val = readl(reg);
233
234 if (data->evdo)
235 val |= MX25_BM_EXTERNAL_VBUS_DIVIDER;
236 else
237 val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER;
238
239 writel(val, reg);
240 spin_unlock_irqrestore(&usbmisc->lock, flags);
241 usleep_range(5000, 10000); /* needed to stabilize voltage */
242
243 return 0;
244}
245
246static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
247{
248 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
249 unsigned long flags;
250 u32 val;
251
252 switch (data->index) {
253 case 0:
254 val = MX27_OTG_PM_BIT;
255 break;
256 case 1:
257 val = MX27_H1_PM_BIT;
258 break;
259 case 2:
260 val = MX27_H2_PM_BIT;
261 break;
262 default:
263 return -EINVAL;
264 }
265
266 spin_lock_irqsave(&usbmisc->lock, flags);
267 if (data->disable_oc)
268 val = readl(usbmisc->base) | val;
269 else
270 val = readl(usbmisc->base) & ~val;
271 writel(val, usbmisc->base);
272 spin_unlock_irqrestore(&usbmisc->lock, flags);
273
274 return 0;
275}
276
277static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
278{
279 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
280 void __iomem *reg = NULL;
281 unsigned long flags;
282 u32 val = 0;
283
284 if (data->index > 3)
285 return -EINVAL;
286
287 /* Select a 24 MHz reference clock for the PHY */
288 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
289 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
290 val |= MX53_USB_PLL_DIV_24_MHZ;
291 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
292
293 spin_lock_irqsave(&usbmisc->lock, flags);
294
295 switch (data->index) {
296 case 0:
297 if (data->disable_oc) {
298 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
299 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
300 writel(val, reg);
301 }
302 break;
303 case 1:
304 if (data->disable_oc) {
305 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
306 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
307 writel(val, reg);
308 }
309 break;
310 case 2:
311 if (data->ulpi) {
312 /* set USBH2 into ULPI-mode. */
313 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
314 val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
315 /* select ULPI clock */
316 val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
317 val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
318 writel(val, reg);
319 /* Set interrupt wake up enable */
320 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
321 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
322 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
323 writel(val, reg);
324 if (is_imx53_usbmisc(data)) {
325 /* Disable internal 60Mhz clock */
326 reg = usbmisc->base +
327 MX53_USB_CLKONOFF_CTRL_OFFSET;
328 val = readl(reg) |
329 MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
330 writel(val, reg);
331 }
332
333 }
334 if (data->disable_oc) {
335 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
336 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
337 writel(val, reg);
338 }
339 break;
340 case 3:
341 if (data->ulpi) {
342 /* set USBH3 into ULPI-mode. */
343 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
344 val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
345 /* select ULPI clock */
346 val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
347 val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
348 writel(val, reg);
349 /* Set interrupt wake up enable */
350 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
351 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
352 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
353 writel(val, reg);
354
355 if (is_imx53_usbmisc(data)) {
356 /* Disable internal 60Mhz clock */
357 reg = usbmisc->base +
358 MX53_USB_CLKONOFF_CTRL_OFFSET;
359 val = readl(reg) |
360 MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
361 writel(val, reg);
362 }
363 }
364 if (data->disable_oc) {
365 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
366 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
367 writel(val, reg);
368 }
369 break;
370 }
371
372 spin_unlock_irqrestore(&usbmisc->lock, flags);
373
374 return 0;
375}
376
377static u32 usbmisc_wakeup_setting(struct imx_usbmisc_data *data)
378{
379 u32 wakeup_setting = MX6_USB_OTG_WAKEUP_BITS;
380
381 if (data->ext_id || data->available_role != USB_DR_MODE_OTG)
382 wakeup_setting &= ~MX6_BM_ID_WAKEUP;
383
384 if (data->ext_vbus || data->available_role == USB_DR_MODE_HOST)
385 wakeup_setting &= ~MX6_BM_VBUS_WAKEUP;
386
387 return wakeup_setting;
388}
389
390static int usbmisc_imx6q_set_wakeup
391 (struct imx_usbmisc_data *data, bool enabled)
392{
393 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
394 unsigned long flags;
395 u32 val;
396 int ret = 0;
397
398 if (data->index > 3)
399 return -EINVAL;
400
401 spin_lock_irqsave(&usbmisc->lock, flags);
402 val = readl(usbmisc->base + data->index * 4);
403 if (enabled) {
404 val &= ~MX6_USB_OTG_WAKEUP_BITS;
405 val |= usbmisc_wakeup_setting(data);
406 } else {
407 if (val & MX6_BM_WAKEUP_INTR)
408 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
409 val &= ~MX6_USB_OTG_WAKEUP_BITS;
410 }
411 writel(val, usbmisc->base + data->index * 4);
412 spin_unlock_irqrestore(&usbmisc->lock, flags);
413
414 return ret;
415}
416
417static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
418{
419 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
420 unsigned long flags;
421 u32 reg;
422
423 if (data->index > 3)
424 return -EINVAL;
425
426 spin_lock_irqsave(&usbmisc->lock, flags);
427
428 reg = readl(usbmisc->base + data->index * 4);
429 if (data->disable_oc) {
430 reg |= MX6_BM_OVER_CUR_DIS;
431 } else {
432 reg &= ~MX6_BM_OVER_CUR_DIS;
433
434 /*
435 * If the polarity is not configured keep it as setup by the
436 * bootloader.
437 */
438 if (data->oc_pol_configured && data->oc_pol_active_low)
439 reg |= MX6_BM_OVER_CUR_POLARITY;
440 else if (data->oc_pol_configured)
441 reg &= ~MX6_BM_OVER_CUR_POLARITY;
442 }
443 /* If the polarity is not set keep it as setup by the bootlader */
444 if (data->pwr_pol == 1)
445 reg |= MX6_BM_PWR_POLARITY;
446 writel(reg, usbmisc->base + data->index * 4);
447
448 /* SoC non-burst setting */
449 reg = readl(usbmisc->base + data->index * 4);
450 writel(reg | MX6_BM_NON_BURST_SETTING,
451 usbmisc->base + data->index * 4);
452
453 /* For HSIC controller */
454 if (data->hsic) {
455 reg = readl(usbmisc->base + data->index * 4);
456 writel(reg | MX6_BM_UTMI_ON_CLOCK,
457 usbmisc->base + data->index * 4);
458 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
459 + (data->index - 2) * 4);
460 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
461 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
462 + (data->index - 2) * 4);
463 }
464
465 spin_unlock_irqrestore(&usbmisc->lock, flags);
466
467 usbmisc_imx6q_set_wakeup(data, false);
468
469 return 0;
470}
471
472static int usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data *data)
473{
474 int offset, ret = 0;
475
476 if (data->index == 2 || data->index == 3) {
477 offset = (data->index - 2) * 4;
478 } else if (data->index == 0) {
479 /*
480 * For SoCs like i.MX7D and later, each USB controller has
481 * its own non-core register region. For SoCs before i.MX7D,
482 * the first two USB controllers are non-HSIC controllers.
483 */
484 offset = 0;
485 } else {
486 dev_err(data->dev, "index is error for usbmisc\n");
487 ret = -EINVAL;
488 }
489
490 return ret ? ret : offset;
491}
492
493static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data)
494{
495 unsigned long flags;
496 u32 val;
497 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
498 int offset;
499
500 spin_lock_irqsave(&usbmisc->lock, flags);
501 offset = usbmisc_imx6_hsic_get_reg_offset(data);
502 if (offset < 0) {
503 spin_unlock_irqrestore(&usbmisc->lock, flags);
504 return offset;
505 }
506
507 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
508 if (!(val & MX6_BM_HSIC_DEV_CONN))
509 writel(val | MX6_BM_HSIC_DEV_CONN,
510 usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
511
512 spin_unlock_irqrestore(&usbmisc->lock, flags);
513
514 return 0;
515}
516
517static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
518{
519 unsigned long flags;
520 u32 val;
521 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
522 int offset;
523
524 spin_lock_irqsave(&usbmisc->lock, flags);
525 offset = usbmisc_imx6_hsic_get_reg_offset(data);
526 if (offset < 0) {
527 spin_unlock_irqrestore(&usbmisc->lock, flags);
528 return offset;
529 }
530
531 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
532 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
533 if (on)
534 val |= MX6_BM_HSIC_CLK_ON;
535 else
536 val &= ~MX6_BM_HSIC_CLK_ON;
537
538 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
539 spin_unlock_irqrestore(&usbmisc->lock, flags);
540
541 return 0;
542}
543
544
545static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
546{
547 void __iomem *reg = NULL;
548 unsigned long flags;
549 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
550 u32 val;
551
552 usbmisc_imx6q_init(data);
553
554 if (data->index == 0 || data->index == 1) {
555 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
556 spin_lock_irqsave(&usbmisc->lock, flags);
557 /* Set vbus wakeup source as bvalid */
558 val = readl(reg);
559 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
560 /*
561 * Disable dp/dm wakeup in device mode when vbus is
562 * not there.
563 */
564 val = readl(usbmisc->base + data->index * 4);
565 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
566 usbmisc->base + data->index * 4);
567 spin_unlock_irqrestore(&usbmisc->lock, flags);
568 }
569
570 /* For HSIC controller */
571 if (data->hsic) {
572 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
573 val |= MX6SX_BM_HSIC_AUTO_RESUME;
574 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
575 }
576
577 return 0;
578}
579
580static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
581{
582 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
583 u32 reg;
584
585 /*
586 * Vybrid only has one misc register set, but in two different
587 * areas. These is reflected in two instances of this driver.
588 */
589 if (data->index >= 1)
590 return -EINVAL;
591
592 if (data->disable_oc) {
593 reg = readl(usbmisc->base);
594 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
595 }
596
597 return 0;
598}
599
600static int usbmisc_imx7d_set_wakeup
601 (struct imx_usbmisc_data *data, bool enabled)
602{
603 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
604 unsigned long flags;
605 u32 val;
606
607 spin_lock_irqsave(&usbmisc->lock, flags);
608 val = readl(usbmisc->base);
609 if (enabled) {
610 val &= ~MX6_USB_OTG_WAKEUP_BITS;
611 val |= usbmisc_wakeup_setting(data);
612 writel(val, usbmisc->base);
613 } else {
614 if (val & MX6_BM_WAKEUP_INTR)
615 dev_dbg(data->dev, "wakeup int\n");
616 writel(val & ~MX6_USB_OTG_WAKEUP_BITS, usbmisc->base);
617 }
618 spin_unlock_irqrestore(&usbmisc->lock, flags);
619
620 return 0;
621}
622
623static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
624{
625 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
626 unsigned long flags;
627 u32 reg;
628
629 if (data->index >= 1)
630 return -EINVAL;
631
632 spin_lock_irqsave(&usbmisc->lock, flags);
633 reg = readl(usbmisc->base);
634 if (data->disable_oc) {
635 reg |= MX6_BM_OVER_CUR_DIS;
636 } else {
637 reg &= ~MX6_BM_OVER_CUR_DIS;
638
639 /*
640 * If the polarity is not configured keep it as setup by the
641 * bootloader.
642 */
643 if (data->oc_pol_configured && data->oc_pol_active_low)
644 reg |= MX6_BM_OVER_CUR_POLARITY;
645 else if (data->oc_pol_configured)
646 reg &= ~MX6_BM_OVER_CUR_POLARITY;
647 }
648 /* If the polarity is not set keep it as setup by the bootlader */
649 if (data->pwr_pol == 1)
650 reg |= MX6_BM_PWR_POLARITY;
651 writel(reg, usbmisc->base);
652
653 /* SoC non-burst setting */
654 reg = readl(usbmisc->base);
655 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
656
657 if (!data->hsic) {
658 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
659 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
660 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID
661 | MX7D_USBNC_AUTO_RESUME,
662 usbmisc->base + MX7D_USBNC_USB_CTRL2);
663 /* PHY tuning for signal quality */
664 reg = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG1);
665 if (data->emp_curr_control >= 0 &&
666 data->emp_curr_control <=
667 (TXPREEMPAMPTUNE0_MASK >> TXPREEMPAMPTUNE0_BIT)) {
668 reg &= ~TXPREEMPAMPTUNE0_MASK;
669 reg |= (data->emp_curr_control << TXPREEMPAMPTUNE0_BIT);
670 }
671
672 if (data->dc_vol_level_adjust >= 0 &&
673 data->dc_vol_level_adjust <=
674 (TXVREFTUNE0_MASK >> TXVREFTUNE0_BIT)) {
675 reg &= ~TXVREFTUNE0_MASK;
676 reg |= (data->dc_vol_level_adjust << TXVREFTUNE0_BIT);
677 }
678
679 if (data->rise_fall_time_adjust >= 0 &&
680 data->rise_fall_time_adjust <=
681 (TXRISETUNE0_MASK >> TXRISETUNE0_BIT)) {
682 reg &= ~TXRISETUNE0_MASK;
683 reg |= (data->rise_fall_time_adjust << TXRISETUNE0_BIT);
684 }
685
686 writel(reg, usbmisc->base + MX7D_USB_OTG_PHY_CFG1);
687 }
688
689 spin_unlock_irqrestore(&usbmisc->lock, flags);
690
691 usbmisc_imx7d_set_wakeup(data, false);
692
693 return 0;
694}
695
696static int imx7d_charger_secondary_detection(struct imx_usbmisc_data *data)
697{
698 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
699 struct usb_phy *usb_phy = data->usb_phy;
700 int val;
701 unsigned long flags;
702
703 /* Clear VDATSRCENB0 to disable VDP_SRC and IDM_SNK required by BC 1.2 spec */
704 spin_lock_irqsave(&usbmisc->lock, flags);
705 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
706 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0;
707 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
708 spin_unlock_irqrestore(&usbmisc->lock, flags);
709
710 /* TVDMSRC_DIS */
711 msleep(20);
712
713 /* VDM_SRC is connected to D- and IDP_SINK is connected to D+ */
714 spin_lock_irqsave(&usbmisc->lock, flags);
715 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
716 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
717 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
718 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL,
719 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
720 spin_unlock_irqrestore(&usbmisc->lock, flags);
721
722 /* TVDMSRC_ON */
723 msleep(40);
724
725 /*
726 * Per BC 1.2, check voltage of D+:
727 * DCP: if greater than VDAT_REF;
728 * CDP: if less than VDAT_REF.
729 */
730 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
731 if (val & MX7D_USB_OTG_PHY_STATUS_CHRGDET) {
732 dev_dbg(data->dev, "It is a dedicate charging port\n");
733 usb_phy->chg_type = DCP_TYPE;
734 } else {
735 dev_dbg(data->dev, "It is a charging downstream port\n");
736 usb_phy->chg_type = CDP_TYPE;
737 }
738
739 return 0;
740}
741
742static void imx7_disable_charger_detector(struct imx_usbmisc_data *data)
743{
744 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
745 unsigned long flags;
746 u32 val;
747
748 spin_lock_irqsave(&usbmisc->lock, flags);
749 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
750 val &= ~(MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB |
751 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
752 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
753 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL);
754 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
755
756 /* Set OPMODE to be 2'b00 and disable its override */
757 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
758 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
759 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
760
761 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
762 writel(val & ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
763 usbmisc->base + MX7D_USBNC_USB_CTRL2);
764 spin_unlock_irqrestore(&usbmisc->lock, flags);
765}
766
767static int imx7d_charger_data_contact_detect(struct imx_usbmisc_data *data)
768{
769 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
770 unsigned long flags;
771 u32 val;
772 int i, data_pin_contact_count = 0;
773
774 /* Enable Data Contact Detect (DCD) per the USB BC 1.2 */
775 spin_lock_irqsave(&usbmisc->lock, flags);
776 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
777 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
778 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
779 spin_unlock_irqrestore(&usbmisc->lock, flags);
780
781 for (i = 0; i < 100; i = i + 1) {
782 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
783 if (!(val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE0)) {
784 if (data_pin_contact_count++ > 5)
785 /* Data pin makes contact */
786 break;
787 usleep_range(5000, 10000);
788 } else {
789 data_pin_contact_count = 0;
790 usleep_range(5000, 6000);
791 }
792 }
793
794 /* Disable DCD after finished data contact check */
795 spin_lock_irqsave(&usbmisc->lock, flags);
796 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
797 writel(val & ~MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
798 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
799 spin_unlock_irqrestore(&usbmisc->lock, flags);
800
801 if (i == 100) {
802 dev_err(data->dev,
803 "VBUS is coming from a dedicated power supply.\n");
804 return -ENXIO;
805 }
806
807 return 0;
808}
809
810static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data)
811{
812 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
813 struct usb_phy *usb_phy = data->usb_phy;
814 unsigned long flags;
815 u32 val;
816
817 /* VDP_SRC is connected to D+ and IDM_SINK is connected to D- */
818 spin_lock_irqsave(&usbmisc->lock, flags);
819 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
820 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL;
821 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
822 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0,
823 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
824 spin_unlock_irqrestore(&usbmisc->lock, flags);
825
826 /* TVDPSRC_ON */
827 msleep(40);
828
829 /* Check if D- is less than VDAT_REF to determine an SDP per BC 1.2 */
830 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
831 if (!(val & MX7D_USB_OTG_PHY_STATUS_CHRGDET)) {
832 dev_dbg(data->dev, "It is a standard downstream port\n");
833 usb_phy->chg_type = SDP_TYPE;
834 }
835
836 return 0;
837}
838
839/*
840 * Whole charger detection process:
841 * 1. OPMODE override to be non-driving
842 * 2. Data contact check
843 * 3. Primary detection
844 * 4. Secondary detection
845 * 5. Disable charger detection
846 */
847static int imx7d_charger_detection(struct imx_usbmisc_data *data)
848{
849 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
850 struct usb_phy *usb_phy = data->usb_phy;
851 unsigned long flags;
852 u32 val;
853 int ret;
854
855 /* Check if vbus is valid */
856 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
857 if (!(val & MX7D_USB_OTG_PHY_STATUS_VBUS_VLD)) {
858 dev_err(data->dev, "vbus is error\n");
859 return -EINVAL;
860 }
861
862 /*
863 * Keep OPMODE to be non-driving mode during the whole
864 * charger detection process.
865 */
866 spin_lock_irqsave(&usbmisc->lock, flags);
867 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
868 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
869 val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING;
870 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
871
872 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
873 writel(val | MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
874 usbmisc->base + MX7D_USBNC_USB_CTRL2);
875 spin_unlock_irqrestore(&usbmisc->lock, flags);
876
877 ret = imx7d_charger_data_contact_detect(data);
878 if (ret)
879 return ret;
880
881 ret = imx7d_charger_primary_detection(data);
882 if (!ret && usb_phy->chg_type != SDP_TYPE)
883 ret = imx7d_charger_secondary_detection(data);
884
885 imx7_disable_charger_detector(data);
886
887 return ret;
888}
889
890static void usbmisc_imx7d_vbus_comparator_on(struct imx_usbmisc_data *data,
891 bool on)
892{
893 unsigned long flags;
894 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
895 u32 val;
896
897 if (data->hsic)
898 return;
899
900 spin_lock_irqsave(&usbmisc->lock, flags);
901 /*
902 * Disable VBUS valid comparator when in suspend mode,
903 * when OTG is disabled and DRVVBUS0 is asserted case
904 * the Bandgap circuitry and VBUS Valid comparator are
905 * still powered, even in Suspend or Sleep mode.
906 */
907 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
908 if (on)
909 val |= MX7D_USB_OTG_PHY_CFG2_DRVVBUS0;
910 else
911 val &= ~MX7D_USB_OTG_PHY_CFG2_DRVVBUS0;
912
913 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
914 spin_unlock_irqrestore(&usbmisc->lock, flags);
915}
916
917static int usbmisc_imx7ulp_init(struct imx_usbmisc_data *data)
918{
919 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
920 unsigned long flags;
921 u32 reg;
922
923 if (data->index >= 1)
924 return -EINVAL;
925
926 spin_lock_irqsave(&usbmisc->lock, flags);
927 reg = readl(usbmisc->base);
928 if (data->disable_oc) {
929 reg |= MX6_BM_OVER_CUR_DIS;
930 } else {
931 reg &= ~MX6_BM_OVER_CUR_DIS;
932
933 /*
934 * If the polarity is not configured keep it as setup by the
935 * bootloader.
936 */
937 if (data->oc_pol_configured && data->oc_pol_active_low)
938 reg |= MX6_BM_OVER_CUR_POLARITY;
939 else if (data->oc_pol_configured)
940 reg &= ~MX6_BM_OVER_CUR_POLARITY;
941 }
942 /* If the polarity is not set keep it as setup by the bootlader */
943 if (data->pwr_pol == 1)
944 reg |= MX6_BM_PWR_POLARITY;
945
946 writel(reg, usbmisc->base);
947
948 /* SoC non-burst setting */
949 reg = readl(usbmisc->base);
950 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
951
952 if (data->hsic) {
953 reg = readl(usbmisc->base);
954 writel(reg | MX6_BM_UTMI_ON_CLOCK, usbmisc->base);
955
956 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
957 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
958 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
959
960 /*
961 * For non-HSIC controller, the autoresume is enabled
962 * at MXS PHY driver (usbphy_ctrl bit18).
963 */
964 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
965 writel(reg | MX7D_USBNC_AUTO_RESUME,
966 usbmisc->base + MX7D_USBNC_USB_CTRL2);
967 } else {
968 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
969 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
970 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
971 usbmisc->base + MX7D_USBNC_USB_CTRL2);
972 }
973
974 spin_unlock_irqrestore(&usbmisc->lock, flags);
975
976 usbmisc_imx7d_set_wakeup(data, false);
977
978 return 0;
979}
980
981static int usbmisc_imx7d_power_lost_check(struct imx_usbmisc_data *data)
982{
983 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
984 unsigned long flags;
985 u32 val;
986
987 spin_lock_irqsave(&usbmisc->lock, flags);
988 val = readl(usbmisc->base);
989 spin_unlock_irqrestore(&usbmisc->lock, flags);
990 /*
991 * Here use a power on reset value to judge
992 * if the controller experienced a power lost
993 */
994 if (val == 0x30001000)
995 return 1;
996 else
997 return 0;
998}
999
1000static int usbmisc_imx6sx_power_lost_check(struct imx_usbmisc_data *data)
1001{
1002 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
1003 unsigned long flags;
1004 u32 val;
1005
1006 spin_lock_irqsave(&usbmisc->lock, flags);
1007 val = readl(usbmisc->base + data->index * 4);
1008 spin_unlock_irqrestore(&usbmisc->lock, flags);
1009 /*
1010 * Here use a power on reset value to judge
1011 * if the controller experienced a power lost
1012 */
1013 if (val == 0x30001000)
1014 return 1;
1015 else
1016 return 0;
1017}
1018
1019static const struct usbmisc_ops imx25_usbmisc_ops = {
1020 .init = usbmisc_imx25_init,
1021 .post = usbmisc_imx25_post,
1022};
1023
1024static const struct usbmisc_ops imx27_usbmisc_ops = {
1025 .init = usbmisc_imx27_init,
1026};
1027
1028static const struct usbmisc_ops imx51_usbmisc_ops = {
1029 .init = usbmisc_imx53_init,
1030};
1031
1032static const struct usbmisc_ops imx53_usbmisc_ops = {
1033 .init = usbmisc_imx53_init,
1034};
1035
1036static const struct usbmisc_ops imx6q_usbmisc_ops = {
1037 .set_wakeup = usbmisc_imx6q_set_wakeup,
1038 .init = usbmisc_imx6q_init,
1039 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
1040 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
1041};
1042
1043static const struct usbmisc_ops vf610_usbmisc_ops = {
1044 .init = usbmisc_vf610_init,
1045};
1046
1047static const struct usbmisc_ops imx6sx_usbmisc_ops = {
1048 .set_wakeup = usbmisc_imx6q_set_wakeup,
1049 .init = usbmisc_imx6sx_init,
1050 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
1051 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
1052 .power_lost_check = usbmisc_imx6sx_power_lost_check,
1053};
1054
1055static const struct usbmisc_ops imx7d_usbmisc_ops = {
1056 .init = usbmisc_imx7d_init,
1057 .set_wakeup = usbmisc_imx7d_set_wakeup,
1058 .charger_detection = imx7d_charger_detection,
1059 .power_lost_check = usbmisc_imx7d_power_lost_check,
1060 .vbus_comparator_on = usbmisc_imx7d_vbus_comparator_on,
1061};
1062
1063static const struct usbmisc_ops imx7ulp_usbmisc_ops = {
1064 .init = usbmisc_imx7ulp_init,
1065 .set_wakeup = usbmisc_imx7d_set_wakeup,
1066 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
1067 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
1068 .power_lost_check = usbmisc_imx7d_power_lost_check,
1069};
1070
1071static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
1072{
1073 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
1074
1075 return usbmisc->ops == &imx53_usbmisc_ops;
1076}
1077
1078int imx_usbmisc_init(struct imx_usbmisc_data *data)
1079{
1080 struct imx_usbmisc *usbmisc;
1081
1082 if (!data)
1083 return 0;
1084
1085 usbmisc = dev_get_drvdata(data->dev);
1086 if (!usbmisc->ops->init)
1087 return 0;
1088 return usbmisc->ops->init(data);
1089}
1090EXPORT_SYMBOL_GPL(imx_usbmisc_init);
1091
1092int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
1093{
1094 struct imx_usbmisc *usbmisc;
1095 int ret = 0;
1096
1097 if (!data)
1098 return 0;
1099
1100 usbmisc = dev_get_drvdata(data->dev);
1101 if (usbmisc->ops->post)
1102 ret = usbmisc->ops->post(data);
1103 if (ret) {
1104 dev_err(data->dev, "post init failed, ret=%d\n", ret);
1105 return ret;
1106 }
1107
1108 if (usbmisc->ops->set_wakeup)
1109 ret = usbmisc->ops->set_wakeup(data, false);
1110 if (ret) {
1111 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1112 return ret;
1113 }
1114
1115 return 0;
1116}
1117EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
1118
1119int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data)
1120{
1121 struct imx_usbmisc *usbmisc;
1122
1123 if (!data)
1124 return 0;
1125
1126 usbmisc = dev_get_drvdata(data->dev);
1127 if (!usbmisc->ops->hsic_set_connect || !data->hsic)
1128 return 0;
1129 return usbmisc->ops->hsic_set_connect(data);
1130}
1131EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect);
1132
1133int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect)
1134{
1135 struct imx_usbmisc *usbmisc;
1136 struct usb_phy *usb_phy;
1137 int ret = 0;
1138
1139 if (!data)
1140 return -EINVAL;
1141
1142 usbmisc = dev_get_drvdata(data->dev);
1143 usb_phy = data->usb_phy;
1144 if (!usbmisc->ops->charger_detection)
1145 return -ENOTSUPP;
1146
1147 if (connect) {
1148 ret = usbmisc->ops->charger_detection(data);
1149 if (ret) {
1150 dev_err(data->dev,
1151 "Error occurs during detection: %d\n",
1152 ret);
1153 usb_phy->chg_state = USB_CHARGER_ABSENT;
1154 } else {
1155 usb_phy->chg_state = USB_CHARGER_PRESENT;
1156 }
1157 } else {
1158 usb_phy->chg_state = USB_CHARGER_ABSENT;
1159 usb_phy->chg_type = UNKNOWN_TYPE;
1160 }
1161 return ret;
1162}
1163EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection);
1164
1165int imx_usbmisc_suspend(struct imx_usbmisc_data *data, bool wakeup)
1166{
1167 struct imx_usbmisc *usbmisc;
1168 int ret = 0;
1169
1170 if (!data)
1171 return 0;
1172
1173 usbmisc = dev_get_drvdata(data->dev);
1174
1175 if (usbmisc->ops->vbus_comparator_on)
1176 usbmisc->ops->vbus_comparator_on(data, false);
1177
1178 if (wakeup && usbmisc->ops->set_wakeup)
1179 ret = usbmisc->ops->set_wakeup(data, true);
1180 if (ret) {
1181 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1182 return ret;
1183 }
1184
1185 if (usbmisc->ops->hsic_set_clk && data->hsic)
1186 ret = usbmisc->ops->hsic_set_clk(data, false);
1187 if (ret) {
1188 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1189 return ret;
1190 }
1191
1192 return ret;
1193}
1194EXPORT_SYMBOL_GPL(imx_usbmisc_suspend);
1195
1196int imx_usbmisc_resume(struct imx_usbmisc_data *data, bool wakeup)
1197{
1198 struct imx_usbmisc *usbmisc;
1199 int ret = 0;
1200
1201 if (!data)
1202 return 0;
1203
1204 usbmisc = dev_get_drvdata(data->dev);
1205
1206 if (usbmisc->ops->power_lost_check)
1207 ret = usbmisc->ops->power_lost_check(data);
1208 if (ret > 0) {
1209 /* re-init if resume from power lost */
1210 ret = imx_usbmisc_init(data);
1211 if (ret) {
1212 dev_err(data->dev, "re-init failed, ret=%d\n", ret);
1213 return ret;
1214 }
1215 }
1216
1217 if (wakeup && usbmisc->ops->set_wakeup)
1218 ret = usbmisc->ops->set_wakeup(data, false);
1219 if (ret) {
1220 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1221 return ret;
1222 }
1223
1224 if (usbmisc->ops->hsic_set_clk && data->hsic)
1225 ret = usbmisc->ops->hsic_set_clk(data, true);
1226 if (ret) {
1227 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1228 goto hsic_set_clk_fail;
1229 }
1230
1231 if (usbmisc->ops->vbus_comparator_on)
1232 usbmisc->ops->vbus_comparator_on(data, true);
1233
1234 return 0;
1235
1236hsic_set_clk_fail:
1237 if (wakeup && usbmisc->ops->set_wakeup)
1238 usbmisc->ops->set_wakeup(data, true);
1239 return ret;
1240}
1241EXPORT_SYMBOL_GPL(imx_usbmisc_resume);
1242
1243static const struct of_device_id usbmisc_imx_dt_ids[] = {
1244 {
1245 .compatible = "fsl,imx25-usbmisc",
1246 .data = &imx25_usbmisc_ops,
1247 },
1248 {
1249 .compatible = "fsl,imx35-usbmisc",
1250 .data = &imx25_usbmisc_ops,
1251 },
1252 {
1253 .compatible = "fsl,imx27-usbmisc",
1254 .data = &imx27_usbmisc_ops,
1255 },
1256 {
1257 .compatible = "fsl,imx51-usbmisc",
1258 .data = &imx51_usbmisc_ops,
1259 },
1260 {
1261 .compatible = "fsl,imx53-usbmisc",
1262 .data = &imx53_usbmisc_ops,
1263 },
1264 {
1265 .compatible = "fsl,imx6q-usbmisc",
1266 .data = &imx6q_usbmisc_ops,
1267 },
1268 {
1269 .compatible = "fsl,vf610-usbmisc",
1270 .data = &vf610_usbmisc_ops,
1271 },
1272 {
1273 .compatible = "fsl,imx6sx-usbmisc",
1274 .data = &imx6sx_usbmisc_ops,
1275 },
1276 {
1277 .compatible = "fsl,imx6ul-usbmisc",
1278 .data = &imx6sx_usbmisc_ops,
1279 },
1280 {
1281 .compatible = "fsl,imx7d-usbmisc",
1282 .data = &imx7d_usbmisc_ops,
1283 },
1284 {
1285 .compatible = "fsl,imx7ulp-usbmisc",
1286 .data = &imx7ulp_usbmisc_ops,
1287 },
1288 { /* sentinel */ }
1289};
1290MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
1291
1292static int usbmisc_imx_probe(struct platform_device *pdev)
1293{
1294 struct imx_usbmisc *data;
1295
1296 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
1297 if (!data)
1298 return -ENOMEM;
1299
1300 spin_lock_init(&data->lock);
1301
1302 data->base = devm_platform_ioremap_resource(pdev, 0);
1303 if (IS_ERR(data->base))
1304 return PTR_ERR(data->base);
1305
1306 data->ops = of_device_get_match_data(&pdev->dev);
1307 platform_set_drvdata(pdev, data);
1308
1309 return 0;
1310}
1311
1312static struct platform_driver usbmisc_imx_driver = {
1313 .probe = usbmisc_imx_probe,
1314 .driver = {
1315 .name = "usbmisc_imx",
1316 .of_match_table = usbmisc_imx_dt_ids,
1317 },
1318};
1319
1320module_platform_driver(usbmisc_imx_driver);
1321
1322MODULE_ALIAS("platform:usbmisc-imx");
1323MODULE_LICENSE("GPL");
1324MODULE_DESCRIPTION("driver for imx usb non-core registers");
1325MODULE_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#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 MX7D_USB_OTG_PHY_CFG1 0x30
132#define TXPREEMPAMPTUNE0_BIT 28
133#define TXPREEMPAMPTUNE0_MASK (3 << 28)
134#define TXVREFTUNE0_BIT 20
135#define TXVREFTUNE0_MASK (0xf << 20)
136
137#define MX6_USB_OTG_WAKEUP_BITS (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | \
138 MX6_BM_ID_WAKEUP)
139
140struct usbmisc_ops {
141 /* It's called once when probe a usb device */
142 int (*init)(struct imx_usbmisc_data *data);
143 /* It's called once after adding a usb device */
144 int (*post)(struct imx_usbmisc_data *data);
145 /* It's called when we need to enable/disable usb wakeup */
146 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
147 /* It's called before setting portsc.suspendM */
148 int (*hsic_set_connect)(struct imx_usbmisc_data *data);
149 /* It's called during suspend/resume */
150 int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled);
151 /* usb charger detection */
152 int (*charger_detection)(struct imx_usbmisc_data *data);
153 /* It's called when system resume from usb power lost */
154 int (*power_lost_check)(struct imx_usbmisc_data *data);
155};
156
157struct imx_usbmisc {
158 void __iomem *base;
159 spinlock_t lock;
160 const struct usbmisc_ops *ops;
161};
162
163static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
164
165static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
166{
167 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
168 unsigned long flags;
169 u32 val = 0;
170
171 if (data->index > 1)
172 return -EINVAL;
173
174 spin_lock_irqsave(&usbmisc->lock, flags);
175 switch (data->index) {
176 case 0:
177 val = readl(usbmisc->base);
178 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
179 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
180 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
181
182 /*
183 * If the polarity is not configured assume active high for
184 * historical reasons.
185 */
186 if (data->oc_pol_configured && data->oc_pol_active_low)
187 val &= ~MX25_OTG_OCPOL_BIT;
188
189 writel(val, usbmisc->base);
190 break;
191 case 1:
192 val = readl(usbmisc->base);
193 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT);
194 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
195 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
196 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
197
198 /*
199 * If the polarity is not configured assume active high for
200 * historical reasons.
201 */
202 if (data->oc_pol_configured && data->oc_pol_active_low)
203 val &= ~MX25_H1_OCPOL_BIT;
204
205 writel(val, usbmisc->base);
206
207 break;
208 }
209 spin_unlock_irqrestore(&usbmisc->lock, flags);
210
211 return 0;
212}
213
214static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
215{
216 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
217 void __iomem *reg;
218 unsigned long flags;
219 u32 val;
220
221 if (data->index > 2)
222 return -EINVAL;
223
224 if (data->index)
225 return 0;
226
227 spin_lock_irqsave(&usbmisc->lock, flags);
228 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
229 val = readl(reg);
230
231 if (data->evdo)
232 val |= MX25_BM_EXTERNAL_VBUS_DIVIDER;
233 else
234 val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER;
235
236 writel(val, reg);
237 spin_unlock_irqrestore(&usbmisc->lock, flags);
238 usleep_range(5000, 10000); /* needed to stabilize voltage */
239
240 return 0;
241}
242
243static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
244{
245 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
246 unsigned long flags;
247 u32 val;
248
249 switch (data->index) {
250 case 0:
251 val = MX27_OTG_PM_BIT;
252 break;
253 case 1:
254 val = MX27_H1_PM_BIT;
255 break;
256 case 2:
257 val = MX27_H2_PM_BIT;
258 break;
259 default:
260 return -EINVAL;
261 }
262
263 spin_lock_irqsave(&usbmisc->lock, flags);
264 if (data->disable_oc)
265 val = readl(usbmisc->base) | val;
266 else
267 val = readl(usbmisc->base) & ~val;
268 writel(val, usbmisc->base);
269 spin_unlock_irqrestore(&usbmisc->lock, flags);
270
271 return 0;
272}
273
274static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
275{
276 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
277 void __iomem *reg = NULL;
278 unsigned long flags;
279 u32 val = 0;
280
281 if (data->index > 3)
282 return -EINVAL;
283
284 /* Select a 24 MHz reference clock for the PHY */
285 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
286 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
287 val |= MX53_USB_PLL_DIV_24_MHZ;
288 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
289
290 spin_lock_irqsave(&usbmisc->lock, flags);
291
292 switch (data->index) {
293 case 0:
294 if (data->disable_oc) {
295 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
296 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
297 writel(val, reg);
298 }
299 break;
300 case 1:
301 if (data->disable_oc) {
302 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
303 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
304 writel(val, reg);
305 }
306 break;
307 case 2:
308 if (data->ulpi) {
309 /* set USBH2 into ULPI-mode. */
310 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
311 val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
312 /* select ULPI clock */
313 val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
314 val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
315 writel(val, reg);
316 /* Set interrupt wake up enable */
317 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
318 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
319 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
320 writel(val, reg);
321 if (is_imx53_usbmisc(data)) {
322 /* Disable internal 60Mhz clock */
323 reg = usbmisc->base +
324 MX53_USB_CLKONOFF_CTRL_OFFSET;
325 val = readl(reg) |
326 MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF;
327 writel(val, reg);
328 }
329
330 }
331 if (data->disable_oc) {
332 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
333 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
334 writel(val, reg);
335 }
336 break;
337 case 3:
338 if (data->ulpi) {
339 /* set USBH3 into ULPI-mode. */
340 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
341 val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
342 /* select ULPI clock */
343 val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
344 val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
345 writel(val, reg);
346 /* Set interrupt wake up enable */
347 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
348 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN
349 | MX53_USB_UHx_CTRL_ULPI_INT_EN;
350 writel(val, reg);
351
352 if (is_imx53_usbmisc(data)) {
353 /* Disable internal 60Mhz clock */
354 reg = usbmisc->base +
355 MX53_USB_CLKONOFF_CTRL_OFFSET;
356 val = readl(reg) |
357 MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF;
358 writel(val, reg);
359 }
360 }
361 if (data->disable_oc) {
362 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
363 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
364 writel(val, reg);
365 }
366 break;
367 }
368
369 spin_unlock_irqrestore(&usbmisc->lock, flags);
370
371 return 0;
372}
373
374static u32 usbmisc_wakeup_setting(struct imx_usbmisc_data *data)
375{
376 u32 wakeup_setting = MX6_USB_OTG_WAKEUP_BITS;
377
378 if (data->ext_id || data->available_role != USB_DR_MODE_OTG)
379 wakeup_setting &= ~MX6_BM_ID_WAKEUP;
380
381 if (data->ext_vbus || data->available_role == USB_DR_MODE_HOST)
382 wakeup_setting &= ~MX6_BM_VBUS_WAKEUP;
383
384 return wakeup_setting;
385}
386
387static int usbmisc_imx6q_set_wakeup
388 (struct imx_usbmisc_data *data, bool enabled)
389{
390 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
391 unsigned long flags;
392 u32 val;
393 int ret = 0;
394
395 if (data->index > 3)
396 return -EINVAL;
397
398 spin_lock_irqsave(&usbmisc->lock, flags);
399 val = readl(usbmisc->base + data->index * 4);
400 if (enabled) {
401 val &= ~MX6_USB_OTG_WAKEUP_BITS;
402 val |= usbmisc_wakeup_setting(data);
403 } else {
404 if (val & MX6_BM_WAKEUP_INTR)
405 pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
406 val &= ~MX6_USB_OTG_WAKEUP_BITS;
407 }
408 writel(val, usbmisc->base + data->index * 4);
409 spin_unlock_irqrestore(&usbmisc->lock, flags);
410
411 return ret;
412}
413
414static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
415{
416 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
417 unsigned long flags;
418 u32 reg;
419
420 if (data->index > 3)
421 return -EINVAL;
422
423 spin_lock_irqsave(&usbmisc->lock, flags);
424
425 reg = readl(usbmisc->base + data->index * 4);
426 if (data->disable_oc) {
427 reg |= MX6_BM_OVER_CUR_DIS;
428 } else {
429 reg &= ~MX6_BM_OVER_CUR_DIS;
430
431 /*
432 * If the polarity is not configured keep it as setup by the
433 * bootloader.
434 */
435 if (data->oc_pol_configured && data->oc_pol_active_low)
436 reg |= MX6_BM_OVER_CUR_POLARITY;
437 else if (data->oc_pol_configured)
438 reg &= ~MX6_BM_OVER_CUR_POLARITY;
439 }
440 /* If the polarity is not set keep it as setup by the bootlader */
441 if (data->pwr_pol == 1)
442 reg |= MX6_BM_PWR_POLARITY;
443 writel(reg, usbmisc->base + data->index * 4);
444
445 /* SoC non-burst setting */
446 reg = readl(usbmisc->base + data->index * 4);
447 writel(reg | MX6_BM_NON_BURST_SETTING,
448 usbmisc->base + data->index * 4);
449
450 /* For HSIC controller */
451 if (data->hsic) {
452 reg = readl(usbmisc->base + data->index * 4);
453 writel(reg | MX6_BM_UTMI_ON_CLOCK,
454 usbmisc->base + data->index * 4);
455 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
456 + (data->index - 2) * 4);
457 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
458 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET
459 + (data->index - 2) * 4);
460 }
461
462 spin_unlock_irqrestore(&usbmisc->lock, flags);
463
464 usbmisc_imx6q_set_wakeup(data, false);
465
466 return 0;
467}
468
469static int usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data *data)
470{
471 int offset, ret = 0;
472
473 if (data->index == 2 || data->index == 3) {
474 offset = (data->index - 2) * 4;
475 } else if (data->index == 0) {
476 /*
477 * For SoCs like i.MX7D and later, each USB controller has
478 * its own non-core register region. For SoCs before i.MX7D,
479 * the first two USB controllers are non-HSIC controllers.
480 */
481 offset = 0;
482 } else {
483 dev_err(data->dev, "index is error for usbmisc\n");
484 ret = -EINVAL;
485 }
486
487 return ret ? ret : offset;
488}
489
490static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data)
491{
492 unsigned long flags;
493 u32 val;
494 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
495 int offset;
496
497 spin_lock_irqsave(&usbmisc->lock, flags);
498 offset = usbmisc_imx6_hsic_get_reg_offset(data);
499 if (offset < 0) {
500 spin_unlock_irqrestore(&usbmisc->lock, flags);
501 return offset;
502 }
503
504 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
505 if (!(val & MX6_BM_HSIC_DEV_CONN))
506 writel(val | MX6_BM_HSIC_DEV_CONN,
507 usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
508
509 spin_unlock_irqrestore(&usbmisc->lock, flags);
510
511 return 0;
512}
513
514static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on)
515{
516 unsigned long flags;
517 u32 val;
518 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
519 int offset;
520
521 spin_lock_irqsave(&usbmisc->lock, flags);
522 offset = usbmisc_imx6_hsic_get_reg_offset(data);
523 if (offset < 0) {
524 spin_unlock_irqrestore(&usbmisc->lock, flags);
525 return offset;
526 }
527
528 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
529 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
530 if (on)
531 val |= MX6_BM_HSIC_CLK_ON;
532 else
533 val &= ~MX6_BM_HSIC_CLK_ON;
534
535 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset);
536 spin_unlock_irqrestore(&usbmisc->lock, flags);
537
538 return 0;
539}
540
541
542static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
543{
544 void __iomem *reg = NULL;
545 unsigned long flags;
546 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
547 u32 val;
548
549 usbmisc_imx6q_init(data);
550
551 if (data->index == 0 || data->index == 1) {
552 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
553 spin_lock_irqsave(&usbmisc->lock, flags);
554 /* Set vbus wakeup source as bvalid */
555 val = readl(reg);
556 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
557 /*
558 * Disable dp/dm wakeup in device mode when vbus is
559 * not there.
560 */
561 val = readl(usbmisc->base + data->index * 4);
562 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
563 usbmisc->base + data->index * 4);
564 spin_unlock_irqrestore(&usbmisc->lock, flags);
565 }
566
567 /* For HSIC controller */
568 if (data->hsic) {
569 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
570 val |= MX6SX_BM_HSIC_AUTO_RESUME;
571 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
572 }
573
574 return 0;
575}
576
577static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
578{
579 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
580 u32 reg;
581
582 /*
583 * Vybrid only has one misc register set, but in two different
584 * areas. These is reflected in two instances of this driver.
585 */
586 if (data->index >= 1)
587 return -EINVAL;
588
589 if (data->disable_oc) {
590 reg = readl(usbmisc->base);
591 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
592 }
593
594 return 0;
595}
596
597static int usbmisc_imx7d_set_wakeup
598 (struct imx_usbmisc_data *data, bool enabled)
599{
600 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
601 unsigned long flags;
602 u32 val;
603
604 spin_lock_irqsave(&usbmisc->lock, flags);
605 val = readl(usbmisc->base);
606 if (enabled) {
607 val &= ~MX6_USB_OTG_WAKEUP_BITS;
608 val |= usbmisc_wakeup_setting(data);
609 writel(val, usbmisc->base);
610 } else {
611 if (val & MX6_BM_WAKEUP_INTR)
612 dev_dbg(data->dev, "wakeup int\n");
613 writel(val & ~MX6_USB_OTG_WAKEUP_BITS, usbmisc->base);
614 }
615 spin_unlock_irqrestore(&usbmisc->lock, flags);
616
617 return 0;
618}
619
620static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
621{
622 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
623 unsigned long flags;
624 u32 reg;
625
626 if (data->index >= 1)
627 return -EINVAL;
628
629 spin_lock_irqsave(&usbmisc->lock, flags);
630 reg = readl(usbmisc->base);
631 if (data->disable_oc) {
632 reg |= MX6_BM_OVER_CUR_DIS;
633 } else {
634 reg &= ~MX6_BM_OVER_CUR_DIS;
635
636 /*
637 * If the polarity is not configured keep it as setup by the
638 * bootloader.
639 */
640 if (data->oc_pol_configured && data->oc_pol_active_low)
641 reg |= MX6_BM_OVER_CUR_POLARITY;
642 else if (data->oc_pol_configured)
643 reg &= ~MX6_BM_OVER_CUR_POLARITY;
644 }
645 /* If the polarity is not set keep it as setup by the bootlader */
646 if (data->pwr_pol == 1)
647 reg |= MX6_BM_PWR_POLARITY;
648 writel(reg, usbmisc->base);
649
650 /* SoC non-burst setting */
651 reg = readl(usbmisc->base);
652 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
653
654 if (!data->hsic) {
655 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
656 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
657 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID
658 | MX7D_USBNC_AUTO_RESUME,
659 usbmisc->base + MX7D_USBNC_USB_CTRL2);
660 /* PHY tuning for signal quality */
661 reg = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG1);
662 if (data->emp_curr_control && data->emp_curr_control <=
663 (TXPREEMPAMPTUNE0_MASK >> TXPREEMPAMPTUNE0_BIT)) {
664 reg &= ~TXPREEMPAMPTUNE0_MASK;
665 reg |= (data->emp_curr_control << TXPREEMPAMPTUNE0_BIT);
666 }
667
668 if (data->dc_vol_level_adjust && data->dc_vol_level_adjust <=
669 (TXVREFTUNE0_MASK >> TXVREFTUNE0_BIT)) {
670 reg &= ~TXVREFTUNE0_MASK;
671 reg |= (data->dc_vol_level_adjust << TXVREFTUNE0_BIT);
672 }
673
674 writel(reg, usbmisc->base + MX7D_USB_OTG_PHY_CFG1);
675 }
676
677 spin_unlock_irqrestore(&usbmisc->lock, flags);
678
679 usbmisc_imx7d_set_wakeup(data, false);
680
681 return 0;
682}
683
684static int imx7d_charger_secondary_detection(struct imx_usbmisc_data *data)
685{
686 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
687 struct usb_phy *usb_phy = data->usb_phy;
688 int val;
689 unsigned long flags;
690
691 /* Clear VDATSRCENB0 to disable VDP_SRC and IDM_SNK required by BC 1.2 spec */
692 spin_lock_irqsave(&usbmisc->lock, flags);
693 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
694 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0;
695 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
696 spin_unlock_irqrestore(&usbmisc->lock, flags);
697
698 /* TVDMSRC_DIS */
699 msleep(20);
700
701 /* VDM_SRC is connected to D- and IDP_SINK is connected to D+ */
702 spin_lock_irqsave(&usbmisc->lock, flags);
703 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
704 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
705 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
706 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL,
707 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
708 spin_unlock_irqrestore(&usbmisc->lock, flags);
709
710 /* TVDMSRC_ON */
711 msleep(40);
712
713 /*
714 * Per BC 1.2, check voltage of D+:
715 * DCP: if greater than VDAT_REF;
716 * CDP: if less than VDAT_REF.
717 */
718 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
719 if (val & MX7D_USB_OTG_PHY_STATUS_CHRGDET) {
720 dev_dbg(data->dev, "It is a dedicate charging port\n");
721 usb_phy->chg_type = DCP_TYPE;
722 } else {
723 dev_dbg(data->dev, "It is a charging downstream port\n");
724 usb_phy->chg_type = CDP_TYPE;
725 }
726
727 return 0;
728}
729
730static void imx7_disable_charger_detector(struct imx_usbmisc_data *data)
731{
732 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
733 unsigned long flags;
734 u32 val;
735
736 spin_lock_irqsave(&usbmisc->lock, flags);
737 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
738 val &= ~(MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB |
739 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
740 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 |
741 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL);
742 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
743
744 /* Set OPMODE to be 2'b00 and disable its override */
745 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
746 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
747 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
748
749 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
750 writel(val & ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
751 usbmisc->base + MX7D_USBNC_USB_CTRL2);
752 spin_unlock_irqrestore(&usbmisc->lock, flags);
753}
754
755static int imx7d_charger_data_contact_detect(struct imx_usbmisc_data *data)
756{
757 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
758 unsigned long flags;
759 u32 val;
760 int i, data_pin_contact_count = 0;
761
762 /* Enable Data Contact Detect (DCD) per the USB BC 1.2 */
763 spin_lock_irqsave(&usbmisc->lock, flags);
764 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
765 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
766 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
767 spin_unlock_irqrestore(&usbmisc->lock, flags);
768
769 for (i = 0; i < 100; i = i + 1) {
770 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
771 if (!(val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE0)) {
772 if (data_pin_contact_count++ > 5)
773 /* Data pin makes contact */
774 break;
775 usleep_range(5000, 10000);
776 } else {
777 data_pin_contact_count = 0;
778 usleep_range(5000, 6000);
779 }
780 }
781
782 /* Disable DCD after finished data contact check */
783 spin_lock_irqsave(&usbmisc->lock, flags);
784 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
785 writel(val & ~MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB,
786 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
787 spin_unlock_irqrestore(&usbmisc->lock, flags);
788
789 if (i == 100) {
790 dev_err(data->dev,
791 "VBUS is coming from a dedicated power supply.\n");
792 return -ENXIO;
793 }
794
795 return 0;
796}
797
798static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data)
799{
800 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
801 struct usb_phy *usb_phy = data->usb_phy;
802 unsigned long flags;
803 u32 val;
804
805 /* VDP_SRC is connected to D+ and IDM_SINK is connected to D- */
806 spin_lock_irqsave(&usbmisc->lock, flags);
807 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
808 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL;
809 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 |
810 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0,
811 usbmisc->base + MX7D_USB_OTG_PHY_CFG2);
812 spin_unlock_irqrestore(&usbmisc->lock, flags);
813
814 /* TVDPSRC_ON */
815 msleep(40);
816
817 /* Check if D- is less than VDAT_REF to determine an SDP per BC 1.2 */
818 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
819 if (!(val & MX7D_USB_OTG_PHY_STATUS_CHRGDET)) {
820 dev_dbg(data->dev, "It is a standard downstream port\n");
821 usb_phy->chg_type = SDP_TYPE;
822 }
823
824 return 0;
825}
826
827/*
828 * Whole charger detection process:
829 * 1. OPMODE override to be non-driving
830 * 2. Data contact check
831 * 3. Primary detection
832 * 4. Secondary detection
833 * 5. Disable charger detection
834 */
835static int imx7d_charger_detection(struct imx_usbmisc_data *data)
836{
837 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
838 struct usb_phy *usb_phy = data->usb_phy;
839 unsigned long flags;
840 u32 val;
841 int ret;
842
843 /* Check if vbus is valid */
844 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS);
845 if (!(val & MX7D_USB_OTG_PHY_STATUS_VBUS_VLD)) {
846 dev_err(data->dev, "vbus is error\n");
847 return -EINVAL;
848 }
849
850 /*
851 * Keep OPMODE to be non-driving mode during the whole
852 * charger detection process.
853 */
854 spin_lock_irqsave(&usbmisc->lock, flags);
855 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
856 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
857 val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING;
858 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
859
860 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
861 writel(val | MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN,
862 usbmisc->base + MX7D_USBNC_USB_CTRL2);
863 spin_unlock_irqrestore(&usbmisc->lock, flags);
864
865 ret = imx7d_charger_data_contact_detect(data);
866 if (ret)
867 return ret;
868
869 ret = imx7d_charger_primary_detection(data);
870 if (!ret && usb_phy->chg_type != SDP_TYPE)
871 ret = imx7d_charger_secondary_detection(data);
872
873 imx7_disable_charger_detector(data);
874
875 return ret;
876}
877
878static int usbmisc_imx7ulp_init(struct imx_usbmisc_data *data)
879{
880 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
881 unsigned long flags;
882 u32 reg;
883
884 if (data->index >= 1)
885 return -EINVAL;
886
887 spin_lock_irqsave(&usbmisc->lock, flags);
888 reg = readl(usbmisc->base);
889 if (data->disable_oc) {
890 reg |= MX6_BM_OVER_CUR_DIS;
891 } else {
892 reg &= ~MX6_BM_OVER_CUR_DIS;
893
894 /*
895 * If the polarity is not configured keep it as setup by the
896 * bootloader.
897 */
898 if (data->oc_pol_configured && data->oc_pol_active_low)
899 reg |= MX6_BM_OVER_CUR_POLARITY;
900 else if (data->oc_pol_configured)
901 reg &= ~MX6_BM_OVER_CUR_POLARITY;
902 }
903 /* If the polarity is not set keep it as setup by the bootlader */
904 if (data->pwr_pol == 1)
905 reg |= MX6_BM_PWR_POLARITY;
906
907 writel(reg, usbmisc->base);
908
909 /* SoC non-burst setting */
910 reg = readl(usbmisc->base);
911 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base);
912
913 if (data->hsic) {
914 reg = readl(usbmisc->base);
915 writel(reg | MX6_BM_UTMI_ON_CLOCK, usbmisc->base);
916
917 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
918 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON;
919 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET);
920
921 /*
922 * For non-HSIC controller, the autoresume is enabled
923 * at MXS PHY driver (usbphy_ctrl bit18).
924 */
925 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
926 writel(reg | MX7D_USBNC_AUTO_RESUME,
927 usbmisc->base + MX7D_USBNC_USB_CTRL2);
928 } else {
929 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
930 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
931 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
932 usbmisc->base + MX7D_USBNC_USB_CTRL2);
933 }
934
935 spin_unlock_irqrestore(&usbmisc->lock, flags);
936
937 usbmisc_imx7d_set_wakeup(data, false);
938
939 return 0;
940}
941
942static int usbmisc_imx7d_power_lost_check(struct imx_usbmisc_data *data)
943{
944 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
945 unsigned long flags;
946 u32 val;
947
948 spin_lock_irqsave(&usbmisc->lock, flags);
949 val = readl(usbmisc->base);
950 spin_unlock_irqrestore(&usbmisc->lock, flags);
951 /*
952 * Here use a power on reset value to judge
953 * if the controller experienced a power lost
954 */
955 if (val == 0x30001000)
956 return 1;
957 else
958 return 0;
959}
960
961static int usbmisc_imx6sx_power_lost_check(struct imx_usbmisc_data *data)
962{
963 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
964 unsigned long flags;
965 u32 val;
966
967 spin_lock_irqsave(&usbmisc->lock, flags);
968 val = readl(usbmisc->base + data->index * 4);
969 spin_unlock_irqrestore(&usbmisc->lock, flags);
970 /*
971 * Here use a power on reset value to judge
972 * if the controller experienced a power lost
973 */
974 if (val == 0x30001000)
975 return 1;
976 else
977 return 0;
978}
979
980static const struct usbmisc_ops imx25_usbmisc_ops = {
981 .init = usbmisc_imx25_init,
982 .post = usbmisc_imx25_post,
983};
984
985static const struct usbmisc_ops imx27_usbmisc_ops = {
986 .init = usbmisc_imx27_init,
987};
988
989static const struct usbmisc_ops imx51_usbmisc_ops = {
990 .init = usbmisc_imx53_init,
991};
992
993static const struct usbmisc_ops imx53_usbmisc_ops = {
994 .init = usbmisc_imx53_init,
995};
996
997static const struct usbmisc_ops imx6q_usbmisc_ops = {
998 .set_wakeup = usbmisc_imx6q_set_wakeup,
999 .init = usbmisc_imx6q_init,
1000 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
1001 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
1002};
1003
1004static const struct usbmisc_ops vf610_usbmisc_ops = {
1005 .init = usbmisc_vf610_init,
1006};
1007
1008static const struct usbmisc_ops imx6sx_usbmisc_ops = {
1009 .set_wakeup = usbmisc_imx6q_set_wakeup,
1010 .init = usbmisc_imx6sx_init,
1011 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
1012 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
1013 .power_lost_check = usbmisc_imx6sx_power_lost_check,
1014};
1015
1016static const struct usbmisc_ops imx7d_usbmisc_ops = {
1017 .init = usbmisc_imx7d_init,
1018 .set_wakeup = usbmisc_imx7d_set_wakeup,
1019 .charger_detection = imx7d_charger_detection,
1020 .power_lost_check = usbmisc_imx7d_power_lost_check,
1021};
1022
1023static const struct usbmisc_ops imx7ulp_usbmisc_ops = {
1024 .init = usbmisc_imx7ulp_init,
1025 .set_wakeup = usbmisc_imx7d_set_wakeup,
1026 .hsic_set_connect = usbmisc_imx6_hsic_set_connect,
1027 .hsic_set_clk = usbmisc_imx6_hsic_set_clk,
1028 .power_lost_check = usbmisc_imx7d_power_lost_check,
1029};
1030
1031static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data)
1032{
1033 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
1034
1035 return usbmisc->ops == &imx53_usbmisc_ops;
1036}
1037
1038int imx_usbmisc_init(struct imx_usbmisc_data *data)
1039{
1040 struct imx_usbmisc *usbmisc;
1041
1042 if (!data)
1043 return 0;
1044
1045 usbmisc = dev_get_drvdata(data->dev);
1046 if (!usbmisc->ops->init)
1047 return 0;
1048 return usbmisc->ops->init(data);
1049}
1050EXPORT_SYMBOL_GPL(imx_usbmisc_init);
1051
1052int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
1053{
1054 struct imx_usbmisc *usbmisc;
1055 int ret = 0;
1056
1057 if (!data)
1058 return 0;
1059
1060 usbmisc = dev_get_drvdata(data->dev);
1061 if (usbmisc->ops->post)
1062 ret = usbmisc->ops->post(data);
1063 if (ret) {
1064 dev_err(data->dev, "post init failed, ret=%d\n", ret);
1065 return ret;
1066 }
1067
1068 if (usbmisc->ops->set_wakeup)
1069 ret = usbmisc->ops->set_wakeup(data, false);
1070 if (ret) {
1071 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1072 return ret;
1073 }
1074
1075 return 0;
1076}
1077EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
1078
1079int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data)
1080{
1081 struct imx_usbmisc *usbmisc;
1082
1083 if (!data)
1084 return 0;
1085
1086 usbmisc = dev_get_drvdata(data->dev);
1087 if (!usbmisc->ops->hsic_set_connect || !data->hsic)
1088 return 0;
1089 return usbmisc->ops->hsic_set_connect(data);
1090}
1091EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect);
1092
1093int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect)
1094{
1095 struct imx_usbmisc *usbmisc;
1096 struct usb_phy *usb_phy;
1097 int ret = 0;
1098
1099 if (!data)
1100 return -EINVAL;
1101
1102 usbmisc = dev_get_drvdata(data->dev);
1103 usb_phy = data->usb_phy;
1104 if (!usbmisc->ops->charger_detection)
1105 return -ENOTSUPP;
1106
1107 if (connect) {
1108 ret = usbmisc->ops->charger_detection(data);
1109 if (ret) {
1110 dev_err(data->dev,
1111 "Error occurs during detection: %d\n",
1112 ret);
1113 usb_phy->chg_state = USB_CHARGER_ABSENT;
1114 } else {
1115 usb_phy->chg_state = USB_CHARGER_PRESENT;
1116 }
1117 } else {
1118 usb_phy->chg_state = USB_CHARGER_ABSENT;
1119 usb_phy->chg_type = UNKNOWN_TYPE;
1120 }
1121 return ret;
1122}
1123EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection);
1124
1125int imx_usbmisc_suspend(struct imx_usbmisc_data *data, bool wakeup)
1126{
1127 struct imx_usbmisc *usbmisc;
1128 int ret = 0;
1129
1130 if (!data)
1131 return 0;
1132
1133 usbmisc = dev_get_drvdata(data->dev);
1134
1135 if (wakeup && usbmisc->ops->set_wakeup)
1136 ret = usbmisc->ops->set_wakeup(data, true);
1137 if (ret) {
1138 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1139 return ret;
1140 }
1141
1142 if (usbmisc->ops->hsic_set_clk && data->hsic)
1143 ret = usbmisc->ops->hsic_set_clk(data, false);
1144 if (ret) {
1145 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1146 return ret;
1147 }
1148
1149 return ret;
1150}
1151EXPORT_SYMBOL_GPL(imx_usbmisc_suspend);
1152
1153int imx_usbmisc_resume(struct imx_usbmisc_data *data, bool wakeup)
1154{
1155 struct imx_usbmisc *usbmisc;
1156 int ret = 0;
1157
1158 if (!data)
1159 return 0;
1160
1161 usbmisc = dev_get_drvdata(data->dev);
1162
1163 if (usbmisc->ops->power_lost_check)
1164 ret = usbmisc->ops->power_lost_check(data);
1165 if (ret > 0) {
1166 /* re-init if resume from power lost */
1167 ret = imx_usbmisc_init(data);
1168 if (ret) {
1169 dev_err(data->dev, "re-init failed, ret=%d\n", ret);
1170 return ret;
1171 }
1172 }
1173
1174 if (wakeup && usbmisc->ops->set_wakeup)
1175 ret = usbmisc->ops->set_wakeup(data, false);
1176 if (ret) {
1177 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1178 return ret;
1179 }
1180
1181 if (usbmisc->ops->hsic_set_clk && data->hsic)
1182 ret = usbmisc->ops->hsic_set_clk(data, true);
1183 if (ret) {
1184 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret);
1185 goto hsic_set_clk_fail;
1186 }
1187
1188 return 0;
1189
1190hsic_set_clk_fail:
1191 if (wakeup && usbmisc->ops->set_wakeup)
1192 usbmisc->ops->set_wakeup(data, true);
1193 return ret;
1194}
1195EXPORT_SYMBOL_GPL(imx_usbmisc_resume);
1196
1197static const struct of_device_id usbmisc_imx_dt_ids[] = {
1198 {
1199 .compatible = "fsl,imx25-usbmisc",
1200 .data = &imx25_usbmisc_ops,
1201 },
1202 {
1203 .compatible = "fsl,imx35-usbmisc",
1204 .data = &imx25_usbmisc_ops,
1205 },
1206 {
1207 .compatible = "fsl,imx27-usbmisc",
1208 .data = &imx27_usbmisc_ops,
1209 },
1210 {
1211 .compatible = "fsl,imx51-usbmisc",
1212 .data = &imx51_usbmisc_ops,
1213 },
1214 {
1215 .compatible = "fsl,imx53-usbmisc",
1216 .data = &imx53_usbmisc_ops,
1217 },
1218 {
1219 .compatible = "fsl,imx6q-usbmisc",
1220 .data = &imx6q_usbmisc_ops,
1221 },
1222 {
1223 .compatible = "fsl,vf610-usbmisc",
1224 .data = &vf610_usbmisc_ops,
1225 },
1226 {
1227 .compatible = "fsl,imx6sx-usbmisc",
1228 .data = &imx6sx_usbmisc_ops,
1229 },
1230 {
1231 .compatible = "fsl,imx6ul-usbmisc",
1232 .data = &imx6sx_usbmisc_ops,
1233 },
1234 {
1235 .compatible = "fsl,imx7d-usbmisc",
1236 .data = &imx7d_usbmisc_ops,
1237 },
1238 {
1239 .compatible = "fsl,imx7ulp-usbmisc",
1240 .data = &imx7ulp_usbmisc_ops,
1241 },
1242 { /* sentinel */ }
1243};
1244MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
1245
1246static int usbmisc_imx_probe(struct platform_device *pdev)
1247{
1248 struct imx_usbmisc *data;
1249
1250 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
1251 if (!data)
1252 return -ENOMEM;
1253
1254 spin_lock_init(&data->lock);
1255
1256 data->base = devm_platform_ioremap_resource(pdev, 0);
1257 if (IS_ERR(data->base))
1258 return PTR_ERR(data->base);
1259
1260 data->ops = of_device_get_match_data(&pdev->dev);
1261 platform_set_drvdata(pdev, data);
1262
1263 return 0;
1264}
1265
1266static int usbmisc_imx_remove(struct platform_device *pdev)
1267{
1268 return 0;
1269}
1270
1271static struct platform_driver usbmisc_imx_driver = {
1272 .probe = usbmisc_imx_probe,
1273 .remove = usbmisc_imx_remove,
1274 .driver = {
1275 .name = "usbmisc_imx",
1276 .of_match_table = usbmisc_imx_dt_ids,
1277 },
1278};
1279
1280module_platform_driver(usbmisc_imx_driver);
1281
1282MODULE_ALIAS("platform:usbmisc-imx");
1283MODULE_LICENSE("GPL");
1284MODULE_DESCRIPTION("driver for imx usb non-core registers");
1285MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");