2 * Copyright 2012-2014 Freescale Semiconductor, Inc.
3 * Copyright (C) 2012 Marek Vasut <marex@denx.de>
4 * on behalf of DENX Software Engineering GmbH
6 * The code contained herein is licensed under the GNU General Public
7 * License. You may obtain a copy of the GNU General Public License
8 * Version 2 or later at the following locations:
10 * http://www.opensource.org/licenses/gpl-license.html
11 * http://www.gnu.org/copyleft/gpl.html
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/platform_device.h>
17 #include <linux/clk.h>
18 #include <linux/usb/otg.h>
19 #include <linux/stmp_device.h>
20 #include <linux/delay.h>
21 #include <linux/err.h>
23 #include <linux/of_device.h>
24 #include <linux/regmap.h>
25 #include <linux/mfd/syscon.h>
27 #define DRIVER_NAME "mxs_phy"
29 #define HW_USBPHY_PWD 0x00
30 #define HW_USBPHY_TX 0x10
31 #define HW_USBPHY_CTRL 0x30
32 #define HW_USBPHY_CTRL_SET 0x34
33 #define HW_USBPHY_CTRL_CLR 0x38
35 #define HW_USBPHY_DEBUG_SET 0x54
36 #define HW_USBPHY_DEBUG_CLR 0x58
38 #define HW_USBPHY_IP 0x90
39 #define HW_USBPHY_IP_SET 0x94
40 #define HW_USBPHY_IP_CLR 0x98
42 #define GM_USBPHY_TX_TXCAL45DP(x) (((x) & 0xf) << 16)
43 #define GM_USBPHY_TX_TXCAL45DN(x) (((x) & 0xf) << 8)
44 #define GM_USBPHY_TX_D_CAL(x) (((x) & 0xf) << 0)
46 #define BM_USBPHY_CTRL_SFTRST BIT(31)
47 #define BM_USBPHY_CTRL_CLKGATE BIT(30)
48 #define BM_USBPHY_CTRL_OTG_ID_VALUE BIT(27)
49 #define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26)
50 #define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE BIT(25)
51 #define BM_USBPHY_CTRL_ENVBUSCHG_WKUP BIT(23)
52 #define BM_USBPHY_CTRL_ENIDCHG_WKUP BIT(22)
53 #define BM_USBPHY_CTRL_ENDPDMCHG_WKUP BIT(21)
54 #define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD BIT(20)
55 #define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE BIT(19)
56 #define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL BIT(18)
57 #define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15)
58 #define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
59 #define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
61 #define BM_USBPHY_IP_FIX (BIT(17) | BIT(18))
63 #define BM_USBPHY_DEBUG_CLKGATE BIT(30)
65 /* Anatop Registers */
66 #define ANADIG_ANA_MISC0 0x150
67 #define ANADIG_ANA_MISC0_SET 0x154
68 #define ANADIG_ANA_MISC0_CLR 0x158
70 #define ANADIG_USB1_VBUS_DET_STAT 0x1c0
71 #define ANADIG_USB2_VBUS_DET_STAT 0x220
73 #define ANADIG_USB1_LOOPBACK_SET 0x1e4
74 #define ANADIG_USB1_LOOPBACK_CLR 0x1e8
75 #define ANADIG_USB2_LOOPBACK_SET 0x244
76 #define ANADIG_USB2_LOOPBACK_CLR 0x248
78 #define ANADIG_USB1_MISC 0x1f0
79 #define ANADIG_USB2_MISC 0x250
81 #define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG BIT(12)
82 #define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL BIT(11)
84 #define BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID BIT(3)
85 #define BM_ANADIG_USB2_VBUS_DET_STAT_VBUS_VALID BIT(3)
87 #define BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1 BIT(2)
88 #define BM_ANADIG_USB1_LOOPBACK_TSTI_TX_EN BIT(5)
89 #define BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1 BIT(2)
90 #define BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN BIT(5)
92 #define BM_ANADIG_USB1_MISC_RX_VPIN_FS BIT(29)
93 #define BM_ANADIG_USB1_MISC_RX_VMIN_FS BIT(28)
94 #define BM_ANADIG_USB2_MISC_RX_VPIN_FS BIT(29)
95 #define BM_ANADIG_USB2_MISC_RX_VMIN_FS BIT(28)
97 #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
99 /* Do disconnection between PHY and controller without vbus */
100 #define MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS BIT(0)
103 * The PHY will be in messy if there is a wakeup after putting
104 * bus to suspend (set portsc.suspendM) but before setting PHY to low
105 * power mode (set portsc.phcd).
107 #define MXS_PHY_ABNORMAL_IN_SUSPEND BIT(1)
110 * The SOF sends too fast after resuming, it will cause disconnection
111 * between host and high speed device.
113 #define MXS_PHY_SENDING_SOF_TOO_FAST BIT(2)
116 * IC has bug fixes logic, they include
117 * MXS_PHY_ABNORMAL_IN_SUSPEND and MXS_PHY_SENDING_SOF_TOO_FAST
118 * which are described at above flags, the RTL will handle it
119 * according to different versions.
121 #define MXS_PHY_NEED_IP_FIX BIT(3)
123 /* Minimum and maximum values for device tree entries */
124 #define MXS_PHY_TX_CAL45_MIN 30
125 #define MXS_PHY_TX_CAL45_MAX 55
126 #define MXS_PHY_TX_D_CAL_MIN 79
127 #define MXS_PHY_TX_D_CAL_MAX 119
129 struct mxs_phy_data {
133 static const struct mxs_phy_data imx23_phy_data = {
134 .flags = MXS_PHY_ABNORMAL_IN_SUSPEND | MXS_PHY_SENDING_SOF_TOO_FAST,
137 static const struct mxs_phy_data imx6q_phy_data = {
138 .flags = MXS_PHY_SENDING_SOF_TOO_FAST |
139 MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
143 static const struct mxs_phy_data imx6sl_phy_data = {
144 .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
148 static const struct mxs_phy_data vf610_phy_data = {
149 .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
153 static const struct mxs_phy_data imx6sx_phy_data = {
154 .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS,
157 static const struct mxs_phy_data imx6ul_phy_data = {
158 .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS,
161 static const struct of_device_id mxs_phy_dt_ids[] = {
162 { .compatible = "fsl,imx6sx-usbphy", .data = &imx6sx_phy_data, },
163 { .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
164 { .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
165 { .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
166 { .compatible = "fsl,vf610-usbphy", .data = &vf610_phy_data, },
167 { .compatible = "fsl,imx6ul-usbphy", .data = &imx6ul_phy_data, },
170 MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
175 const struct mxs_phy_data *data;
176 struct regmap *regmap_anatop;
182 static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
184 return mxs_phy->data == &imx6q_phy_data;
187 static inline bool is_imx6sl_phy(struct mxs_phy *mxs_phy)
189 return mxs_phy->data == &imx6sl_phy_data;
193 * PHY needs some 32K cycles to switch from 32K clock to
194 * bus (such as AHB/AXI, etc) clock.
196 static void mxs_phy_clock_switch_delay(void)
198 usleep_range(300, 400);
201 static void mxs_phy_tx_init(struct mxs_phy *mxs_phy)
203 void __iomem *base = mxs_phy->phy.io_priv;
206 /* Update TX register if there is anything to write */
207 if (mxs_phy->tx_reg_mask) {
208 phytx = readl(base + HW_USBPHY_TX);
209 phytx &= ~mxs_phy->tx_reg_mask;
210 phytx |= mxs_phy->tx_reg_set;
211 writel(phytx, base + HW_USBPHY_TX);
215 static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
218 void __iomem *base = mxs_phy->phy.io_priv;
220 ret = stmp_reset_block(base + HW_USBPHY_CTRL);
224 /* Power up the PHY */
225 writel(0, base + HW_USBPHY_PWD);
228 * USB PHY Ctrl Setting
229 * - Auto clock/power on
230 * - Enable full/low speed support
232 writel(BM_USBPHY_CTRL_ENAUTOSET_USBCLKS |
233 BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE |
234 BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD |
235 BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE |
236 BM_USBPHY_CTRL_ENAUTO_PWRON_PLL |
237 BM_USBPHY_CTRL_ENUTMILEVEL2 |
238 BM_USBPHY_CTRL_ENUTMILEVEL3,
239 base + HW_USBPHY_CTRL_SET);
241 if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX)
242 writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET);
244 mxs_phy_tx_init(mxs_phy);
249 /* Return true if the vbus is there */
250 static bool mxs_phy_get_vbus_status(struct mxs_phy *mxs_phy)
252 unsigned int vbus_value = 0;
254 if (!mxs_phy->regmap_anatop)
257 if (mxs_phy->port_id == 0)
258 regmap_read(mxs_phy->regmap_anatop,
259 ANADIG_USB1_VBUS_DET_STAT,
261 else if (mxs_phy->port_id == 1)
262 regmap_read(mxs_phy->regmap_anatop,
263 ANADIG_USB2_VBUS_DET_STAT,
266 if (vbus_value & BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID)
272 static void __mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool disconnect)
274 void __iomem *base = mxs_phy->phy.io_priv;
278 writel_relaxed(BM_USBPHY_DEBUG_CLKGATE,
279 base + HW_USBPHY_DEBUG_CLR);
281 if (mxs_phy->port_id == 0) {
282 reg = disconnect ? ANADIG_USB1_LOOPBACK_SET
283 : ANADIG_USB1_LOOPBACK_CLR;
284 regmap_write(mxs_phy->regmap_anatop, reg,
285 BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1 |
286 BM_ANADIG_USB1_LOOPBACK_TSTI_TX_EN);
287 } else if (mxs_phy->port_id == 1) {
288 reg = disconnect ? ANADIG_USB2_LOOPBACK_SET
289 : ANADIG_USB2_LOOPBACK_CLR;
290 regmap_write(mxs_phy->regmap_anatop, reg,
291 BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1 |
292 BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN);
296 writel_relaxed(BM_USBPHY_DEBUG_CLKGATE,
297 base + HW_USBPHY_DEBUG_SET);
299 /* Delay some time, and let Linestate be SE0 for controller */
301 usleep_range(500, 1000);
304 static bool mxs_phy_is_otg_host(struct mxs_phy *mxs_phy)
306 return IS_ENABLED(CONFIG_USB_OTG) &&
307 mxs_phy->phy.last_event == USB_EVENT_ID;
310 static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on)
312 bool vbus_is_on = false;
314 /* If the SoCs don't need to disconnect line without vbus, quit */
315 if (!(mxs_phy->data->flags & MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS))
318 /* If the SoCs don't have anatop, quit */
319 if (!mxs_phy->regmap_anatop)
322 vbus_is_on = mxs_phy_get_vbus_status(mxs_phy);
324 if (on && !vbus_is_on && !mxs_phy_is_otg_host(mxs_phy))
325 __mxs_phy_disconnect_line(mxs_phy, true);
327 __mxs_phy_disconnect_line(mxs_phy, false);
331 static int mxs_phy_init(struct usb_phy *phy)
334 struct mxs_phy *mxs_phy = to_mxs_phy(phy);
336 mxs_phy_clock_switch_delay();
337 ret = clk_prepare_enable(mxs_phy->clk);
341 return mxs_phy_hw_init(mxs_phy);
344 static void mxs_phy_shutdown(struct usb_phy *phy)
346 struct mxs_phy *mxs_phy = to_mxs_phy(phy);
347 u32 value = BM_USBPHY_CTRL_ENVBUSCHG_WKUP |
348 BM_USBPHY_CTRL_ENDPDMCHG_WKUP |
349 BM_USBPHY_CTRL_ENIDCHG_WKUP |
350 BM_USBPHY_CTRL_ENAUTOSET_USBCLKS |
351 BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE |
352 BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD |
353 BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE |
354 BM_USBPHY_CTRL_ENAUTO_PWRON_PLL;
356 writel(value, phy->io_priv + HW_USBPHY_CTRL_CLR);
357 writel(0xffffffff, phy->io_priv + HW_USBPHY_PWD);
359 writel(BM_USBPHY_CTRL_CLKGATE,
360 phy->io_priv + HW_USBPHY_CTRL_SET);
362 clk_disable_unprepare(mxs_phy->clk);
365 static bool mxs_phy_is_low_speed_connection(struct mxs_phy *mxs_phy)
367 unsigned int line_state;
368 /* bit definition is the same for all controllers */
369 unsigned int dp_bit = BM_ANADIG_USB1_MISC_RX_VPIN_FS,
370 dm_bit = BM_ANADIG_USB1_MISC_RX_VMIN_FS;
371 unsigned int reg = ANADIG_USB1_MISC;
373 /* If the SoCs don't have anatop, quit */
374 if (!mxs_phy->regmap_anatop)
377 if (mxs_phy->port_id == 0)
378 reg = ANADIG_USB1_MISC;
379 else if (mxs_phy->port_id == 1)
380 reg = ANADIG_USB2_MISC;
382 regmap_read(mxs_phy->regmap_anatop, reg, &line_state);
384 if ((line_state & (dp_bit | dm_bit)) == dm_bit)
390 static int mxs_phy_suspend(struct usb_phy *x, int suspend)
393 struct mxs_phy *mxs_phy = to_mxs_phy(x);
394 bool low_speed_connection, vbus_is_on;
396 low_speed_connection = mxs_phy_is_low_speed_connection(mxs_phy);
397 vbus_is_on = mxs_phy_get_vbus_status(mxs_phy);
401 * FIXME: Do not power down RXPWD1PT1 bit for low speed
402 * connect. The low speed connection will have problem at
403 * very rare cases during usb suspend and resume process.
405 if (low_speed_connection & vbus_is_on) {
407 * If value to be set as pwd value is not 0xffffffff,
408 * several 32Khz cycles are needed.
410 mxs_phy_clock_switch_delay();
411 writel(0xffbfffff, x->io_priv + HW_USBPHY_PWD);
413 writel(0xffffffff, x->io_priv + HW_USBPHY_PWD);
415 writel(BM_USBPHY_CTRL_CLKGATE,
416 x->io_priv + HW_USBPHY_CTRL_SET);
417 clk_disable_unprepare(mxs_phy->clk);
419 mxs_phy_clock_switch_delay();
420 ret = clk_prepare_enable(mxs_phy->clk);
423 writel(BM_USBPHY_CTRL_CLKGATE,
424 x->io_priv + HW_USBPHY_CTRL_CLR);
425 writel(0, x->io_priv + HW_USBPHY_PWD);
431 static int mxs_phy_set_wakeup(struct usb_phy *x, bool enabled)
433 struct mxs_phy *mxs_phy = to_mxs_phy(x);
434 u32 value = BM_USBPHY_CTRL_ENVBUSCHG_WKUP |
435 BM_USBPHY_CTRL_ENDPDMCHG_WKUP |
436 BM_USBPHY_CTRL_ENIDCHG_WKUP;
438 mxs_phy_disconnect_line(mxs_phy, true);
439 writel_relaxed(value, x->io_priv + HW_USBPHY_CTRL_SET);
441 writel_relaxed(value, x->io_priv + HW_USBPHY_CTRL_CLR);
442 mxs_phy_disconnect_line(mxs_phy, false);
448 static int mxs_phy_on_connect(struct usb_phy *phy,
449 enum usb_device_speed speed)
451 dev_dbg(phy->dev, "%s device has connected\n",
452 (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
454 if (speed == USB_SPEED_HIGH)
455 writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
456 phy->io_priv + HW_USBPHY_CTRL_SET);
461 static int mxs_phy_on_disconnect(struct usb_phy *phy,
462 enum usb_device_speed speed)
464 dev_dbg(phy->dev, "%s device has disconnected\n",
465 (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
467 /* Sometimes, the speed is not high speed when the error occurs */
468 if (readl(phy->io_priv + HW_USBPHY_CTRL) &
469 BM_USBPHY_CTRL_ENHOSTDISCONDETECT)
470 writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
471 phy->io_priv + HW_USBPHY_CTRL_CLR);
476 static int mxs_phy_probe(struct platform_device *pdev)
478 struct resource *res;
481 struct mxs_phy *mxs_phy;
483 const struct of_device_id *of_id;
484 struct device_node *np = pdev->dev.of_node;
487 of_id = of_match_device(mxs_phy_dt_ids, &pdev->dev);
491 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
492 base = devm_ioremap_resource(&pdev->dev, res);
494 return PTR_ERR(base);
496 clk = devm_clk_get(&pdev->dev, NULL);
499 "can't get the clock, err=%ld", PTR_ERR(clk));
503 mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
507 /* Some SoCs don't have anatop registers */
508 if (of_get_property(np, "fsl,anatop", NULL)) {
509 mxs_phy->regmap_anatop = syscon_regmap_lookup_by_phandle
511 if (IS_ERR(mxs_phy->regmap_anatop)) {
513 "failed to find regmap for anatop\n");
514 return PTR_ERR(mxs_phy->regmap_anatop);
518 /* Precompute which bits of the TX register are to be updated, if any */
519 if (!of_property_read_u32(np, "fsl,tx-cal-45-dn-ohms", &val) &&
520 val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) {
521 /* Scale to a 4-bit value */
522 val = (MXS_PHY_TX_CAL45_MAX - val) * 0xF
523 / (MXS_PHY_TX_CAL45_MAX - MXS_PHY_TX_CAL45_MIN);
524 mxs_phy->tx_reg_mask |= GM_USBPHY_TX_TXCAL45DN(~0);
525 mxs_phy->tx_reg_set |= GM_USBPHY_TX_TXCAL45DN(val);
528 if (!of_property_read_u32(np, "fsl,tx-cal-45-dp-ohms", &val) &&
529 val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) {
530 /* Scale to a 4-bit value. */
531 val = (MXS_PHY_TX_CAL45_MAX - val) * 0xF
532 / (MXS_PHY_TX_CAL45_MAX - MXS_PHY_TX_CAL45_MIN);
533 mxs_phy->tx_reg_mask |= GM_USBPHY_TX_TXCAL45DP(~0);
534 mxs_phy->tx_reg_set |= GM_USBPHY_TX_TXCAL45DP(val);
537 if (!of_property_read_u32(np, "fsl,tx-d-cal", &val) &&
538 val >= MXS_PHY_TX_D_CAL_MIN && val <= MXS_PHY_TX_D_CAL_MAX) {
539 /* Scale to a 4-bit value. Round up the values and heavily
540 * weight the rounding by adding 2/3 of the denominator.
542 val = ((MXS_PHY_TX_D_CAL_MAX - val) * 0xF
543 + (MXS_PHY_TX_D_CAL_MAX - MXS_PHY_TX_D_CAL_MIN) * 2/3)
544 / (MXS_PHY_TX_D_CAL_MAX - MXS_PHY_TX_D_CAL_MIN);
545 mxs_phy->tx_reg_mask |= GM_USBPHY_TX_D_CAL(~0);
546 mxs_phy->tx_reg_set |= GM_USBPHY_TX_D_CAL(val);
549 ret = of_alias_get_id(np, "usbphy");
551 dev_dbg(&pdev->dev, "failed to get alias id, errno %d\n", ret);
552 mxs_phy->port_id = ret;
554 mxs_phy->phy.io_priv = base;
555 mxs_phy->phy.dev = &pdev->dev;
556 mxs_phy->phy.label = DRIVER_NAME;
557 mxs_phy->phy.init = mxs_phy_init;
558 mxs_phy->phy.shutdown = mxs_phy_shutdown;
559 mxs_phy->phy.set_suspend = mxs_phy_suspend;
560 mxs_phy->phy.notify_connect = mxs_phy_on_connect;
561 mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect;
562 mxs_phy->phy.type = USB_PHY_TYPE_USB2;
563 mxs_phy->phy.set_wakeup = mxs_phy_set_wakeup;
566 mxs_phy->data = of_id->data;
568 platform_set_drvdata(pdev, mxs_phy);
570 device_set_wakeup_capable(&pdev->dev, true);
572 return usb_add_phy_dev(&mxs_phy->phy);
575 static int mxs_phy_remove(struct platform_device *pdev)
577 struct mxs_phy *mxs_phy = platform_get_drvdata(pdev);
579 usb_remove_phy(&mxs_phy->phy);
584 #ifdef CONFIG_PM_SLEEP
585 static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
587 unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR;
589 /* If the SoCs don't have anatop, quit */
590 if (!mxs_phy->regmap_anatop)
593 if (is_imx6q_phy(mxs_phy))
594 regmap_write(mxs_phy->regmap_anatop, reg,
595 BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG);
596 else if (is_imx6sl_phy(mxs_phy))
597 regmap_write(mxs_phy->regmap_anatop,
598 reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL);
601 static int mxs_phy_system_suspend(struct device *dev)
603 struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
605 if (device_may_wakeup(dev))
606 mxs_phy_enable_ldo_in_suspend(mxs_phy, true);
611 static int mxs_phy_system_resume(struct device *dev)
613 struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
615 if (device_may_wakeup(dev))
616 mxs_phy_enable_ldo_in_suspend(mxs_phy, false);
620 #endif /* CONFIG_PM_SLEEP */
622 static SIMPLE_DEV_PM_OPS(mxs_phy_pm, mxs_phy_system_suspend,
623 mxs_phy_system_resume);
625 static struct platform_driver mxs_phy_driver = {
626 .probe = mxs_phy_probe,
627 .remove = mxs_phy_remove,
630 .of_match_table = mxs_phy_dt_ids,
635 static int __init mxs_phy_module_init(void)
637 return platform_driver_register(&mxs_phy_driver);
639 postcore_initcall(mxs_phy_module_init);
641 static void __exit mxs_phy_module_exit(void)
643 platform_driver_unregister(&mxs_phy_driver);
645 module_exit(mxs_phy_module_exit);
647 MODULE_ALIAS("platform:mxs-usb-phy");
648 MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
649 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
650 MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
651 MODULE_LICENSE("GPL");