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
142 struct 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
160 struct imx_usbmisc {
161 void __iomem *base;
162 spinlock_t lock;
163 const struct usbmisc_ops *ops;
164 };
165
166 static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data);
167
usbmisc_imx25_init(struct imx_usbmisc_data * data)168 static 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
usbmisc_imx25_post(struct imx_usbmisc_data * data)217 static 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
usbmisc_imx27_init(struct imx_usbmisc_data * data)246 static 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
usbmisc_imx53_init(struct imx_usbmisc_data * data)277 static 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
usbmisc_wakeup_setting(struct imx_usbmisc_data * data)377 static 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
usbmisc_imx6q_set_wakeup(struct imx_usbmisc_data * data,bool enabled)390 static 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
usbmisc_imx6q_init(struct imx_usbmisc_data * data)417 static 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
usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data * data)472 static 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
usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data * data)493 static 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
usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data * data,bool on)517 static 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
usbmisc_imx6sx_init(struct imx_usbmisc_data * data)545 static 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
usbmisc_vf610_init(struct imx_usbmisc_data * data)580 static 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
usbmisc_imx7d_set_wakeup(struct imx_usbmisc_data * data,bool enabled)600 static 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
usbmisc_imx7d_init(struct imx_usbmisc_data * data)623 static 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
imx7d_charger_secondary_detection(struct imx_usbmisc_data * data)696 static 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
imx7_disable_charger_detector(struct imx_usbmisc_data * data)742 static 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
imx7d_charger_data_contact_detect(struct imx_usbmisc_data * data)767 static 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
imx7d_charger_primary_detection(struct imx_usbmisc_data * data)810 static 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 */
imx7d_charger_detection(struct imx_usbmisc_data * data)847 static 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
usbmisc_imx7d_vbus_comparator_on(struct imx_usbmisc_data * data,bool on)890 static 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
usbmisc_imx7ulp_init(struct imx_usbmisc_data * data)917 static 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
usbmisc_imx7d_power_lost_check(struct imx_usbmisc_data * data)981 static 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
usbmisc_imx6sx_power_lost_check(struct imx_usbmisc_data * data)1000 static 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
1019 static const struct usbmisc_ops imx25_usbmisc_ops = {
1020 .init = usbmisc_imx25_init,
1021 .post = usbmisc_imx25_post,
1022 };
1023
1024 static const struct usbmisc_ops imx27_usbmisc_ops = {
1025 .init = usbmisc_imx27_init,
1026 };
1027
1028 static const struct usbmisc_ops imx51_usbmisc_ops = {
1029 .init = usbmisc_imx53_init,
1030 };
1031
1032 static const struct usbmisc_ops imx53_usbmisc_ops = {
1033 .init = usbmisc_imx53_init,
1034 };
1035
1036 static 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
1043 static const struct usbmisc_ops vf610_usbmisc_ops = {
1044 .init = usbmisc_vf610_init,
1045 };
1046
1047 static 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
1055 static 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
1063 static 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
is_imx53_usbmisc(struct imx_usbmisc_data * data)1071 static 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
imx_usbmisc_init(struct imx_usbmisc_data * data)1078 int 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 }
1090 EXPORT_SYMBOL_GPL(imx_usbmisc_init);
1091
imx_usbmisc_init_post(struct imx_usbmisc_data * data)1092 int 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 }
1117 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
1118
imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data * data)1119 int 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 }
1131 EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect);
1132
imx_usbmisc_charger_detection(struct imx_usbmisc_data * data,bool connect)1133 int 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 }
1163 EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection);
1164
imx_usbmisc_suspend(struct imx_usbmisc_data * data,bool wakeup)1165 int 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 }
1194 EXPORT_SYMBOL_GPL(imx_usbmisc_suspend);
1195
imx_usbmisc_resume(struct imx_usbmisc_data * data,bool wakeup)1196 int 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
1236 hsic_set_clk_fail:
1237 if (wakeup && usbmisc->ops->set_wakeup)
1238 usbmisc->ops->set_wakeup(data, true);
1239 return ret;
1240 }
1241 EXPORT_SYMBOL_GPL(imx_usbmisc_resume);
1242
1243 static 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 };
1290 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
1291
usbmisc_imx_probe(struct platform_device * pdev)1292 static 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
1312 static 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
1320 module_platform_driver(usbmisc_imx_driver);
1321
1322 MODULE_ALIAS("platform:usbmisc-imx");
1323 MODULE_LICENSE("GPL");
1324 MODULE_DESCRIPTION("driver for imx usb non-core registers");
1325 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
1326