blob: 2af4369a2d733ffa2058dc8e017ba8c3ac1ee5ff [file] [log] [blame]
Graeme Gregoryb1f254e2013-05-28 10:50:11 +09001/*
2 * Palmas USB transceiver driver
3 *
4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * Author: Graeme Gregory <gg@slimlogic.co.uk>
11 * Author: Kishon Vijay Abraham I <kishon@ti.com>
12 *
13 * Based on twl6030_usb.c
14 *
15 * Author: Hema HK <hemahk@ti.com>
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 */
22
23#include <linux/module.h>
24#include <linux/interrupt.h>
25#include <linux/platform_device.h>
Kishon Vijay Abraham If63d32d2014-03-28 12:21:02 +053026#include <linux/slab.h>
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090027#include <linux/err.h>
28#include <linux/mfd/palmas.h>
29#include <linux/of.h>
30#include <linux/of_platform.h>
Roger Quadros92b7cb52015-08-03 17:40:51 +030031#include <linux/of_gpio.h>
Chanwoo Choiac22a1d2015-08-13 09:19:43 +090032#include <linux/gpio/consumer.h>
Roger Quadros92b7cb52015-08-03 17:40:51 +030033#include <linux/workqueue.h>
34
35#define USB_GPIO_DEBOUNCE_MS 20 /* ms */
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090036
Chanwoo Choi73b6ecd2015-06-12 11:10:06 +090037static const unsigned int palmas_extcon_cable[] = {
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +090038 EXTCON_USB,
39 EXTCON_USB_HOST,
40 EXTCON_NONE,
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090041};
42
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090043static void palmas_usb_wakeup(struct palmas *palmas, int enable)
44{
45 if (enable)
46 palmas_write(palmas, PALMAS_USB_OTG_BASE, PALMAS_USB_WAKEUP,
47 PALMAS_USB_WAKEUP_ID_WK_UP_COMP);
48 else
49 palmas_write(palmas, PALMAS_USB_OTG_BASE, PALMAS_USB_WAKEUP, 0);
50}
51
52static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
53{
54 struct palmas_usb *palmas_usb = _palmas_usb;
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +090055 struct extcon_dev *edev = palmas_usb->edev;
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090056 unsigned int vbus_line_state;
57
58 palmas_read(palmas_usb->palmas, PALMAS_INTERRUPT_BASE,
59 PALMAS_INT3_LINE_STATE, &vbus_line_state);
60
61 if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
62 if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
63 palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
Chanwoo Choi8670b452016-08-16 15:55:34 +090064 extcon_set_state_sync(edev, EXTCON_USB, true);
Roger Quadros567ab5a2017-01-24 16:54:07 +020065 dev_dbg(palmas_usb->dev, "USB cable is attached\n");
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090066 } else {
67 dev_dbg(palmas_usb->dev,
68 "Spurious connect event detected\n");
69 }
70 } else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
71 if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
72 palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
Chanwoo Choi8670b452016-08-16 15:55:34 +090073 extcon_set_state_sync(edev, EXTCON_USB, false);
Roger Quadros567ab5a2017-01-24 16:54:07 +020074 dev_dbg(palmas_usb->dev, "USB cable is detached\n");
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090075 } else {
76 dev_dbg(palmas_usb->dev,
77 "Spurious disconnect event detected\n");
78 }
79 }
80
81 return IRQ_HANDLED;
82}
83
84static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
85{
George Cherianb7d2d5b2013-10-11 00:18:39 +053086 unsigned int set, id_src;
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090087 struct palmas_usb *palmas_usb = _palmas_usb;
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +090088 struct extcon_dev *edev = palmas_usb->edev;
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090089
90 palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
91 PALMAS_USB_ID_INT_LATCH_SET, &set);
George Cherianb7d2d5b2013-10-11 00:18:39 +053092 palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
93 PALMAS_USB_ID_INT_SRC, &id_src);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090094
George Cherianb7d2d5b2013-10-11 00:18:39 +053095 if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
96 (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090097 palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
Graeme Gregoryb1f254e2013-05-28 10:50:11 +090098 PALMAS_USB_ID_INT_LATCH_CLR,
99 PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
100 palmas_usb->linkstat = PALMAS_USB_STATE_ID;
Chanwoo Choi8670b452016-08-16 15:55:34 +0900101 extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
Roger Quadros567ab5a2017-01-24 16:54:07 +0200102 dev_dbg(palmas_usb->dev, "USB-HOST cable is attached\n");
George Cherianb7d2d5b2013-10-11 00:18:39 +0530103 } else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
104 (id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900105 palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900106 PALMAS_USB_ID_INT_LATCH_CLR,
107 PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
108 palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
Chanwoo Choi8670b452016-08-16 15:55:34 +0900109 extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
Roger Quadros567ab5a2017-01-24 16:54:07 +0200110 dev_dbg(palmas_usb->dev, "USB-HOST cable is detached\n");
Laxman Dewangan002945f2013-07-09 18:34:22 +0530111 } else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
112 (!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
113 palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
Chanwoo Choi8670b452016-08-16 15:55:34 +0900114 extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
Roger Quadros567ab5a2017-01-24 16:54:07 +0200115 dev_dbg(palmas_usb->dev, "USB-HOST cable is detached\n");
George Cherianb7d2d5b2013-10-11 00:18:39 +0530116 } else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
117 (id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
118 palmas_usb->linkstat = PALMAS_USB_STATE_ID;
Chanwoo Choi8670b452016-08-16 15:55:34 +0900119 extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
Roger Quadros567ab5a2017-01-24 16:54:07 +0200120 dev_dbg(palmas_usb->dev, " USB-HOST cable is attached\n");
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900121 }
122
123 return IRQ_HANDLED;
124}
125
Roger Quadros92b7cb52015-08-03 17:40:51 +0300126static void palmas_gpio_id_detect(struct work_struct *work)
127{
128 int id;
129 struct palmas_usb *palmas_usb = container_of(to_delayed_work(work),
130 struct palmas_usb,
131 wq_detectid);
132 struct extcon_dev *edev = palmas_usb->edev;
133
134 if (!palmas_usb->id_gpiod)
135 return;
136
137 id = gpiod_get_value_cansleep(palmas_usb->id_gpiod);
138
139 if (id) {
Chanwoo Choi8670b452016-08-16 15:55:34 +0900140 extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
Roger Quadros567ab5a2017-01-24 16:54:07 +0200141 dev_dbg(palmas_usb->dev, "USB-HOST cable is detached\n");
Roger Quadros92b7cb52015-08-03 17:40:51 +0300142 } else {
Chanwoo Choi8670b452016-08-16 15:55:34 +0900143 extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
Roger Quadros567ab5a2017-01-24 16:54:07 +0200144 dev_dbg(palmas_usb->dev, "USB-HOST cable is attached\n");
Roger Quadros92b7cb52015-08-03 17:40:51 +0300145 }
146}
147
148static irqreturn_t palmas_gpio_id_irq_handler(int irq, void *_palmas_usb)
149{
150 struct palmas_usb *palmas_usb = _palmas_usb;
151
152 queue_delayed_work(system_power_efficient_wq, &palmas_usb->wq_detectid,
153 palmas_usb->sw_debounce_jiffies);
154
155 return IRQ_HANDLED;
156}
157
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900158static void palmas_enable_irq(struct palmas_usb *palmas_usb)
159{
160 palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
161 PALMAS_USB_VBUS_CTRL_SET,
162 PALMAS_USB_VBUS_CTRL_SET_VBUS_ACT_COMP);
163
Roger Quadros92b7cb52015-08-03 17:40:51 +0300164 if (palmas_usb->enable_id_detection) {
165 palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
166 PALMAS_USB_ID_CTRL_SET,
167 PALMAS_USB_ID_CTRL_SET_ID_ACT_COMP);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900168
Roger Quadros92b7cb52015-08-03 17:40:51 +0300169 palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
170 PALMAS_USB_ID_INT_EN_HI_SET,
171 PALMAS_USB_ID_INT_EN_HI_SET_ID_GND |
172 PALMAS_USB_ID_INT_EN_HI_SET_ID_FLOAT);
173 }
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900174
Laxman Dewangan7281e052013-07-10 14:59:06 +0530175 if (palmas_usb->enable_vbus_detection)
176 palmas_vbus_irq_handler(palmas_usb->vbus_irq, palmas_usb);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900177
178 /* cold plug for host mode needs this delay */
Laxman Dewangan7281e052013-07-10 14:59:06 +0530179 if (palmas_usb->enable_id_detection) {
180 msleep(30);
181 palmas_id_irq_handler(palmas_usb->id_irq, palmas_usb);
182 }
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900183}
184
185static int palmas_usb_probe(struct platform_device *pdev)
186{
187 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
Jingoo Han7c0f65582013-09-11 13:22:18 +0900188 struct palmas_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900189 struct device_node *node = pdev->dev.of_node;
190 struct palmas_usb *palmas_usb;
191 int status;
192
Roger Quadros9fe172b2016-12-08 10:45:31 +0200193 if (!palmas) {
194 dev_err(&pdev->dev, "failed to get valid parent\n");
195 return -EINVAL;
196 }
197
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900198 palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
199 if (!palmas_usb)
200 return -ENOMEM;
201
Laxman Dewangan7281e052013-07-10 14:59:06 +0530202 if (node && !pdata) {
203 palmas_usb->wakeup = of_property_read_bool(node, "ti,wakeup");
204 palmas_usb->enable_id_detection = of_property_read_bool(node,
205 "ti,enable-id-detection");
206 palmas_usb->enable_vbus_detection = of_property_read_bool(node,
207 "ti,enable-vbus-detection");
208 } else {
209 palmas_usb->wakeup = true;
210 palmas_usb->enable_id_detection = true;
211 palmas_usb->enable_vbus_detection = true;
212
213 if (pdata)
214 palmas_usb->wakeup = pdata->wakeup;
215 }
216
Chanwoo Choiac22a1d2015-08-13 09:19:43 +0900217 palmas_usb->id_gpiod = devm_gpiod_get_optional(&pdev->dev, "id",
218 GPIOD_IN);
Roger Quadros92b7cb52015-08-03 17:40:51 +0300219 if (IS_ERR(palmas_usb->id_gpiod)) {
220 dev_err(&pdev->dev, "failed to get id gpio\n");
221 return PTR_ERR(palmas_usb->id_gpiod);
222 }
223
Felipe Balbib7aad8e2015-12-30 09:55:45 +0900224 palmas_usb->vbus_gpiod = devm_gpiod_get_optional(&pdev->dev, "vbus",
225 GPIOD_IN);
226 if (IS_ERR(palmas_usb->vbus_gpiod)) {
227 dev_err(&pdev->dev, "failed to get vbus gpio\n");
228 return PTR_ERR(palmas_usb->vbus_gpiod);
229 }
230
Roger Quadros92b7cb52015-08-03 17:40:51 +0300231 if (palmas_usb->enable_id_detection && palmas_usb->id_gpiod) {
232 palmas_usb->enable_id_detection = false;
233 palmas_usb->enable_gpio_id_detection = true;
234 }
235
Felipe Balbib7aad8e2015-12-30 09:55:45 +0900236 if (palmas_usb->enable_vbus_detection && palmas_usb->vbus_gpiod) {
237 palmas_usb->enable_vbus_detection = false;
238 palmas_usb->enable_gpio_vbus_detection = true;
239 }
240
Roger Quadros92b7cb52015-08-03 17:40:51 +0300241 if (palmas_usb->enable_gpio_id_detection) {
242 u32 debounce;
243
244 if (of_property_read_u32(node, "debounce-delay-ms", &debounce))
245 debounce = USB_GPIO_DEBOUNCE_MS;
246
247 status = gpiod_set_debounce(palmas_usb->id_gpiod,
248 debounce * 1000);
249 if (status < 0)
250 palmas_usb->sw_debounce_jiffies = msecs_to_jiffies(debounce);
251 }
252
253 INIT_DELAYED_WORK(&palmas_usb->wq_detectid, palmas_gpio_id_detect);
254
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900255 palmas->usb = palmas_usb;
256 palmas_usb->palmas = palmas;
257
258 palmas_usb->dev = &pdev->dev;
259
Laxman Dewangan7281e052013-07-10 14:59:06 +0530260 palmas_usb_wakeup(palmas, palmas_usb->wakeup);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900261
262 platform_set_drvdata(pdev, palmas_usb);
263
Chanwoo Choi3f79a3f2014-04-21 20:44:53 +0900264 palmas_usb->edev = devm_extcon_dev_allocate(&pdev->dev,
265 palmas_extcon_cable);
266 if (IS_ERR(palmas_usb->edev)) {
267 dev_err(&pdev->dev, "failed to allocate extcon device\n");
268 return -ENOMEM;
269 }
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900270
Chanwoo Choi3f79a3f2014-04-21 20:44:53 +0900271 status = devm_extcon_dev_register(&pdev->dev, palmas_usb->edev);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900272 if (status) {
273 dev_err(&pdev->dev, "failed to register extcon device\n");
274 return status;
275 }
276
Laxman Dewangan7281e052013-07-10 14:59:06 +0530277 if (palmas_usb->enable_id_detection) {
Roger Quadros92b7cb52015-08-03 17:40:51 +0300278 palmas_usb->id_otg_irq = regmap_irq_get_virq(palmas->irq_data,
279 PALMAS_ID_OTG_IRQ);
280 palmas_usb->id_irq = regmap_irq_get_virq(palmas->irq_data,
281 PALMAS_ID_IRQ);
Laxman Dewangan7281e052013-07-10 14:59:06 +0530282 status = devm_request_threaded_irq(palmas_usb->dev,
283 palmas_usb->id_irq,
284 NULL, palmas_id_irq_handler,
285 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
Grygorii Strashkoae64e422016-02-26 17:42:51 +0200286 IRQF_ONESHOT,
Laxman Dewangan7281e052013-07-10 14:59:06 +0530287 "palmas_usb_id", palmas_usb);
288 if (status < 0) {
289 dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900290 palmas_usb->id_irq, status);
Sangjung Woob4dad552014-04-21 19:10:14 +0900291 return status;
Laxman Dewangan7281e052013-07-10 14:59:06 +0530292 }
Roger Quadros92b7cb52015-08-03 17:40:51 +0300293 } else if (palmas_usb->enable_gpio_id_detection) {
294 palmas_usb->gpio_id_irq = gpiod_to_irq(palmas_usb->id_gpiod);
295 if (palmas_usb->gpio_id_irq < 0) {
296 dev_err(&pdev->dev, "failed to get id irq\n");
297 return palmas_usb->gpio_id_irq;
298 }
299 status = devm_request_threaded_irq(&pdev->dev,
300 palmas_usb->gpio_id_irq,
301 NULL,
302 palmas_gpio_id_irq_handler,
303 IRQF_TRIGGER_RISING |
304 IRQF_TRIGGER_FALLING |
305 IRQF_ONESHOT,
306 "palmas_usb_id",
307 palmas_usb);
308 if (status < 0) {
309 dev_err(&pdev->dev,
310 "failed to request handler for id irq\n");
311 return status;
312 }
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900313 }
314
Laxman Dewangan7281e052013-07-10 14:59:06 +0530315 if (palmas_usb->enable_vbus_detection) {
Roger Quadros92b7cb52015-08-03 17:40:51 +0300316 palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
317 PALMAS_VBUS_OTG_IRQ);
318 palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
319 PALMAS_VBUS_IRQ);
Laxman Dewangan7281e052013-07-10 14:59:06 +0530320 status = devm_request_threaded_irq(palmas_usb->dev,
321 palmas_usb->vbus_irq, NULL,
322 palmas_vbus_irq_handler,
323 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
Grygorii Strashkoae64e422016-02-26 17:42:51 +0200324 IRQF_ONESHOT,
Laxman Dewangan7281e052013-07-10 14:59:06 +0530325 "palmas_usb_vbus", palmas_usb);
326 if (status < 0) {
327 dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900328 palmas_usb->vbus_irq, status);
Sangjung Woob4dad552014-04-21 19:10:14 +0900329 return status;
Laxman Dewangan7281e052013-07-10 14:59:06 +0530330 }
Felipe Balbib7aad8e2015-12-30 09:55:45 +0900331 } else if (palmas_usb->enable_gpio_vbus_detection) {
332 /* remux GPIO_1 as VBUSDET */
333 status = palmas_update_bits(palmas,
334 PALMAS_PU_PD_OD_BASE,
335 PALMAS_PRIMARY_SECONDARY_PAD1,
336 PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK,
337 (1 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT));
338 if (status < 0) {
339 dev_err(&pdev->dev, "can't remux GPIO1\n");
340 return status;
341 }
342
343 palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
344 PALMAS_VBUS_OTG_IRQ);
345 palmas_usb->gpio_vbus_irq = gpiod_to_irq(palmas_usb->vbus_gpiod);
346 if (palmas_usb->gpio_vbus_irq < 0) {
347 dev_err(&pdev->dev, "failed to get vbus irq\n");
348 return palmas_usb->gpio_vbus_irq;
349 }
350 status = devm_request_threaded_irq(&pdev->dev,
351 palmas_usb->gpio_vbus_irq,
352 NULL,
353 palmas_vbus_irq_handler,
354 IRQF_TRIGGER_FALLING |
355 IRQF_TRIGGER_RISING |
Nishanth Menonf75587b2016-04-01 08:52:47 -0500356 IRQF_ONESHOT,
Felipe Balbib7aad8e2015-12-30 09:55:45 +0900357 "palmas_usb_vbus",
358 palmas_usb);
359 if (status < 0) {
360 dev_err(&pdev->dev,
361 "failed to request handler for vbus irq\n");
362 return status;
363 }
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900364 }
365
366 palmas_enable_irq(palmas_usb);
Roger Quadros92b7cb52015-08-03 17:40:51 +0300367 /* perform initial detection */
Roger Quadros62e6d1e2016-06-15 11:12:05 +0300368 if (palmas_usb->enable_gpio_vbus_detection)
369 palmas_vbus_irq_handler(palmas_usb->gpio_vbus_irq, palmas_usb);
Roger Quadros92b7cb52015-08-03 17:40:51 +0300370 palmas_gpio_id_detect(&palmas_usb->wq_detectid.work);
Laxman Dewangan024783e2013-07-09 18:34:23 +0530371 device_set_wakeup_capable(&pdev->dev, true);
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900372 return 0;
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900373}
374
Roger Quadros92b7cb52015-08-03 17:40:51 +0300375static int palmas_usb_remove(struct platform_device *pdev)
376{
377 struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);
378
379 cancel_delayed_work_sync(&palmas_usb->wq_detectid);
380
381 return 0;
382}
383
Laxman Dewangan024783e2013-07-09 18:34:23 +0530384#ifdef CONFIG_PM_SLEEP
385static int palmas_usb_suspend(struct device *dev)
386{
387 struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
388
389 if (device_may_wakeup(dev)) {
Laxman Dewangan7281e052013-07-10 14:59:06 +0530390 if (palmas_usb->enable_vbus_detection)
391 enable_irq_wake(palmas_usb->vbus_irq);
Felipe Balbib7aad8e2015-12-30 09:55:45 +0900392 if (palmas_usb->enable_gpio_vbus_detection)
393 enable_irq_wake(palmas_usb->gpio_vbus_irq);
Laxman Dewangan7281e052013-07-10 14:59:06 +0530394 if (palmas_usb->enable_id_detection)
395 enable_irq_wake(palmas_usb->id_irq);
Roger Quadros92b7cb52015-08-03 17:40:51 +0300396 if (palmas_usb->enable_gpio_id_detection)
397 enable_irq_wake(palmas_usb->gpio_id_irq);
Laxman Dewangan024783e2013-07-09 18:34:23 +0530398 }
399 return 0;
400}
401
402static int palmas_usb_resume(struct device *dev)
403{
404 struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
405
406 if (device_may_wakeup(dev)) {
Laxman Dewangan7281e052013-07-10 14:59:06 +0530407 if (palmas_usb->enable_vbus_detection)
408 disable_irq_wake(palmas_usb->vbus_irq);
Felipe Balbib7aad8e2015-12-30 09:55:45 +0900409 if (palmas_usb->enable_gpio_vbus_detection)
410 disable_irq_wake(palmas_usb->gpio_vbus_irq);
Laxman Dewangan7281e052013-07-10 14:59:06 +0530411 if (palmas_usb->enable_id_detection)
412 disable_irq_wake(palmas_usb->id_irq);
Roger Quadros92b7cb52015-08-03 17:40:51 +0300413 if (palmas_usb->enable_gpio_id_detection)
414 disable_irq_wake(palmas_usb->gpio_id_irq);
Laxman Dewangan024783e2013-07-09 18:34:23 +0530415 }
Roger Quadros01944322017-02-15 14:31:29 +0200416
417 /* check if GPIO states changed while suspend/resume */
418 if (palmas_usb->enable_gpio_vbus_detection)
419 palmas_vbus_irq_handler(palmas_usb->gpio_vbus_irq, palmas_usb);
420 palmas_gpio_id_detect(&palmas_usb->wq_detectid.work);
421
Laxman Dewangan024783e2013-07-09 18:34:23 +0530422 return 0;
423};
424#endif
425
Jingoo Han8d4288f2014-02-27 20:36:15 +0900426static SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_usb_suspend, palmas_usb_resume);
Laxman Dewangan024783e2013-07-09 18:34:23 +0530427
Krzysztof Kozlowski3bc2ac72014-05-23 11:03:05 +0200428static const struct of_device_id of_palmas_match_tbl[] = {
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900429 { .compatible = "ti,palmas-usb", },
Kishon Vijay Abraham I5fbc77d2013-10-10 18:07:27 +0530430 { .compatible = "ti,palmas-usb-vid", },
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900431 { .compatible = "ti,twl6035-usb", },
Kishon Vijay Abraham I5fbc77d2013-10-10 18:07:27 +0530432 { .compatible = "ti,twl6035-usb-vid", },
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900433 { /* end */ }
434};
435
436static struct platform_driver palmas_usb_driver = {
437 .probe = palmas_usb_probe,
Roger Quadros92b7cb52015-08-03 17:40:51 +0300438 .remove = palmas_usb_remove,
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900439 .driver = {
440 .name = "palmas-usb",
441 .of_match_table = of_palmas_match_tbl,
Laxman Dewangan024783e2013-07-09 18:34:23 +0530442 .pm = &palmas_pm_ops,
Graeme Gregoryb1f254e2013-05-28 10:50:11 +0900443 },
444};
445
446module_platform_driver(palmas_usb_driver);
447
448MODULE_ALIAS("platform:palmas-usb");
449MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
450MODULE_DESCRIPTION("Palmas USB transceiver driver");
451MODULE_LICENSE("GPL");
452MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);