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11bab5a2 EBS |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // ChromeOS Embedded Controller extcon | |
3 | // | |
4 | // Copyright (C) 2017 Google, Inc. | |
5 | // Author: Benson Leung <bleung@chromium.org> | |
c6983166 | 6 | |
176aa360 | 7 | #include <linux/extcon-provider.h> |
c6983166 | 8 | #include <linux/kernel.h> |
c6983166 BL |
9 | #include <linux/module.h> |
10 | #include <linux/notifier.h> | |
11 | #include <linux/of.h> | |
840d9f13 EBS |
12 | #include <linux/platform_data/cros_ec_commands.h> |
13 | #include <linux/platform_data/cros_ec_proto.h> | |
c6983166 BL |
14 | #include <linux/platform_device.h> |
15 | #include <linux/slab.h> | |
16 | #include <linux/sched.h> | |
17 | ||
18 | struct cros_ec_extcon_info { | |
19 | struct device *dev; | |
20 | struct extcon_dev *edev; | |
21 | ||
22 | int port_id; | |
23 | ||
24 | struct cros_ec_device *ec; | |
25 | ||
26 | struct notifier_block notifier; | |
27 | ||
c7eb47f9 BL |
28 | unsigned int dr; /* data role */ |
29 | bool pr; /* power role (true if VBUS enabled) */ | |
c6983166 BL |
30 | bool dp; /* DisplayPort enabled */ |
31 | bool mux; /* SuperSpeed (usb3) enabled */ | |
32 | unsigned int power_type; | |
33 | }; | |
34 | ||
35 | static const unsigned int usb_type_c_cable[] = { | |
c7eb47f9 BL |
36 | EXTCON_USB, |
37 | EXTCON_USB_HOST, | |
c6983166 BL |
38 | EXTCON_DISP_DP, |
39 | EXTCON_NONE, | |
40 | }; | |
41 | ||
c7eb47f9 BL |
42 | enum usb_data_roles { |
43 | DR_NONE, | |
44 | DR_HOST, | |
45 | DR_DEVICE, | |
46 | }; | |
47 | ||
c6983166 BL |
48 | /** |
49 | * cros_ec_pd_command() - Send a command to the EC. | |
50 | * @info: pointer to struct cros_ec_extcon_info | |
51 | * @command: EC command | |
52 | * @version: EC command version | |
53 | * @outdata: EC command output data | |
54 | * @outsize: Size of outdata | |
55 | * @indata: EC command input data | |
56 | * @insize: Size of indata | |
57 | * | |
58 | * Return: 0 on success, <0 on failure. | |
59 | */ | |
60 | static int cros_ec_pd_command(struct cros_ec_extcon_info *info, | |
61 | unsigned int command, | |
62 | unsigned int version, | |
63 | void *outdata, | |
64 | unsigned int outsize, | |
65 | void *indata, | |
66 | unsigned int insize) | |
67 | { | |
68 | struct cros_ec_command *msg; | |
69 | int ret; | |
70 | ||
71 | msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL); | |
1cf76c4e CJ |
72 | if (!msg) |
73 | return -ENOMEM; | |
c6983166 BL |
74 | |
75 | msg->version = version; | |
76 | msg->command = command; | |
77 | msg->outsize = outsize; | |
78 | msg->insize = insize; | |
79 | ||
80 | if (outsize) | |
81 | memcpy(msg->data, outdata, outsize); | |
82 | ||
83 | ret = cros_ec_cmd_xfer_status(info->ec, msg); | |
84 | if (ret >= 0 && insize) | |
85 | memcpy(indata, msg->data, insize); | |
86 | ||
87 | kfree(msg); | |
88 | return ret; | |
89 | } | |
90 | ||
91 | /** | |
92 | * cros_ec_usb_get_power_type() - Get power type info about PD device attached | |
93 | * to given port. | |
94 | * @info: pointer to struct cros_ec_extcon_info | |
95 | * | |
96 | * Return: power type on success, <0 on failure. | |
97 | */ | |
98 | static int cros_ec_usb_get_power_type(struct cros_ec_extcon_info *info) | |
99 | { | |
100 | struct ec_params_usb_pd_power_info req; | |
101 | struct ec_response_usb_pd_power_info resp; | |
102 | int ret; | |
103 | ||
104 | req.port = info->port_id; | |
105 | ret = cros_ec_pd_command(info, EC_CMD_USB_PD_POWER_INFO, 0, | |
106 | &req, sizeof(req), &resp, sizeof(resp)); | |
107 | if (ret < 0) | |
108 | return ret; | |
109 | ||
110 | return resp.type; | |
111 | } | |
112 | ||
113 | /** | |
114 | * cros_ec_usb_get_pd_mux_state() - Get PD mux state for given port. | |
115 | * @info: pointer to struct cros_ec_extcon_info | |
116 | * | |
117 | * Return: PD mux state on success, <0 on failure. | |
118 | */ | |
119 | static int cros_ec_usb_get_pd_mux_state(struct cros_ec_extcon_info *info) | |
120 | { | |
121 | struct ec_params_usb_pd_mux_info req; | |
122 | struct ec_response_usb_pd_mux_info resp; | |
123 | int ret; | |
124 | ||
125 | req.port = info->port_id; | |
126 | ret = cros_ec_pd_command(info, EC_CMD_USB_PD_MUX_INFO, 0, | |
127 | &req, sizeof(req), | |
128 | &resp, sizeof(resp)); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ||
132 | return resp.flags; | |
133 | } | |
134 | ||
135 | /** | |
136 | * cros_ec_usb_get_role() - Get role info about possible PD device attached to a | |
137 | * given port. | |
138 | * @info: pointer to struct cros_ec_extcon_info | |
139 | * @polarity: pointer to cable polarity (return value) | |
140 | * | |
141 | * Return: role info on success, -ENOTCONN if no cable is connected, <0 on | |
142 | * failure. | |
143 | */ | |
144 | static int cros_ec_usb_get_role(struct cros_ec_extcon_info *info, | |
145 | bool *polarity) | |
146 | { | |
147 | struct ec_params_usb_pd_control pd_control; | |
148 | struct ec_response_usb_pd_control_v1 resp; | |
149 | int ret; | |
150 | ||
151 | pd_control.port = info->port_id; | |
152 | pd_control.role = USB_PD_CTRL_ROLE_NO_CHANGE; | |
153 | pd_control.mux = USB_PD_CTRL_MUX_NO_CHANGE; | |
c7eb47f9 | 154 | pd_control.swap = USB_PD_CTRL_SWAP_NONE; |
c6983166 BL |
155 | ret = cros_ec_pd_command(info, EC_CMD_USB_PD_CONTROL, 1, |
156 | &pd_control, sizeof(pd_control), | |
157 | &resp, sizeof(resp)); | |
158 | if (ret < 0) | |
159 | return ret; | |
160 | ||
161 | if (!(resp.enabled & PD_CTRL_RESP_ENABLED_CONNECTED)) | |
162 | return -ENOTCONN; | |
163 | ||
164 | *polarity = resp.polarity; | |
165 | ||
166 | return resp.role; | |
167 | } | |
168 | ||
169 | /** | |
170 | * cros_ec_pd_get_num_ports() - Get number of EC charge ports. | |
171 | * @info: pointer to struct cros_ec_extcon_info | |
172 | * | |
173 | * Return: number of ports on success, <0 on failure. | |
174 | */ | |
175 | static int cros_ec_pd_get_num_ports(struct cros_ec_extcon_info *info) | |
176 | { | |
177 | struct ec_response_usb_pd_ports resp; | |
178 | int ret; | |
179 | ||
180 | ret = cros_ec_pd_command(info, EC_CMD_USB_PD_PORTS, | |
181 | 0, NULL, 0, &resp, sizeof(resp)); | |
182 | if (ret < 0) | |
183 | return ret; | |
184 | ||
185 | return resp.num_ports; | |
186 | } | |
187 | ||
c7eb47f9 BL |
188 | static const char *cros_ec_usb_role_string(unsigned int role) |
189 | { | |
190 | return role == DR_NONE ? "DISCONNECTED" : | |
191 | (role == DR_HOST ? "DFP" : "UFP"); | |
192 | } | |
193 | ||
194 | static const char *cros_ec_usb_power_type_string(unsigned int type) | |
195 | { | |
196 | switch (type) { | |
197 | case USB_CHG_TYPE_NONE: | |
198 | return "USB_CHG_TYPE_NONE"; | |
199 | case USB_CHG_TYPE_PD: | |
200 | return "USB_CHG_TYPE_PD"; | |
201 | case USB_CHG_TYPE_PROPRIETARY: | |
202 | return "USB_CHG_TYPE_PROPRIETARY"; | |
203 | case USB_CHG_TYPE_C: | |
204 | return "USB_CHG_TYPE_C"; | |
205 | case USB_CHG_TYPE_BC12_DCP: | |
206 | return "USB_CHG_TYPE_BC12_DCP"; | |
207 | case USB_CHG_TYPE_BC12_CDP: | |
208 | return "USB_CHG_TYPE_BC12_CDP"; | |
209 | case USB_CHG_TYPE_BC12_SDP: | |
210 | return "USB_CHG_TYPE_BC12_SDP"; | |
211 | case USB_CHG_TYPE_OTHER: | |
212 | return "USB_CHG_TYPE_OTHER"; | |
213 | case USB_CHG_TYPE_VBUS: | |
214 | return "USB_CHG_TYPE_VBUS"; | |
215 | case USB_CHG_TYPE_UNKNOWN: | |
216 | return "USB_CHG_TYPE_UNKNOWN"; | |
217 | default: | |
218 | return "USB_CHG_TYPE_UNKNOWN"; | |
219 | } | |
220 | } | |
221 | ||
222 | static bool cros_ec_usb_power_type_is_wall_wart(unsigned int type, | |
223 | unsigned int role) | |
224 | { | |
225 | switch (type) { | |
226 | /* FIXME : Guppy, Donnettes, and other chargers will be miscategorized | |
227 | * because they identify with USB_CHG_TYPE_C, but we can't return true | |
228 | * here from that code because that breaks Suzy-Q and other kinds of | |
229 | * USB Type-C cables and peripherals. | |
230 | */ | |
231 | case USB_CHG_TYPE_PROPRIETARY: | |
232 | case USB_CHG_TYPE_BC12_DCP: | |
233 | return true; | |
234 | case USB_CHG_TYPE_PD: | |
235 | case USB_CHG_TYPE_C: | |
236 | case USB_CHG_TYPE_BC12_CDP: | |
237 | case USB_CHG_TYPE_BC12_SDP: | |
238 | case USB_CHG_TYPE_OTHER: | |
239 | case USB_CHG_TYPE_VBUS: | |
240 | case USB_CHG_TYPE_UNKNOWN: | |
241 | case USB_CHG_TYPE_NONE: | |
242 | default: | |
243 | return false; | |
244 | } | |
245 | } | |
246 | ||
c6983166 BL |
247 | static int extcon_cros_ec_detect_cable(struct cros_ec_extcon_info *info, |
248 | bool force) | |
249 | { | |
250 | struct device *dev = info->dev; | |
251 | int role, power_type; | |
c7eb47f9 BL |
252 | unsigned int dr = DR_NONE; |
253 | bool pr = false; | |
c6983166 BL |
254 | bool polarity = false; |
255 | bool dp = false; | |
256 | bool mux = false; | |
257 | bool hpd = false; | |
258 | ||
259 | power_type = cros_ec_usb_get_power_type(info); | |
260 | if (power_type < 0) { | |
261 | dev_err(dev, "failed getting power type err = %d\n", | |
262 | power_type); | |
263 | return power_type; | |
264 | } | |
265 | ||
266 | role = cros_ec_usb_get_role(info, &polarity); | |
267 | if (role < 0) { | |
268 | if (role != -ENOTCONN) { | |
269 | dev_err(dev, "failed getting role err = %d\n", role); | |
270 | return role; | |
271 | } | |
c7eb47f9 | 272 | dev_dbg(dev, "disconnected\n"); |
c6983166 BL |
273 | } else { |
274 | int pd_mux_state; | |
275 | ||
c7eb47f9 BL |
276 | dr = (role & PD_CTRL_RESP_ROLE_DATA) ? DR_HOST : DR_DEVICE; |
277 | pr = (role & PD_CTRL_RESP_ROLE_POWER); | |
c6983166 BL |
278 | pd_mux_state = cros_ec_usb_get_pd_mux_state(info); |
279 | if (pd_mux_state < 0) | |
280 | pd_mux_state = USB_PD_MUX_USB_ENABLED; | |
281 | ||
282 | dp = pd_mux_state & USB_PD_MUX_DP_ENABLED; | |
283 | mux = pd_mux_state & USB_PD_MUX_USB_ENABLED; | |
284 | hpd = pd_mux_state & USB_PD_MUX_HPD_IRQ; | |
c6983166 | 285 | |
c7eb47f9 BL |
286 | dev_dbg(dev, |
287 | "connected role 0x%x pwr type %d dr %d pr %d pol %d mux %d dp %d hpd %d\n", | |
288 | role, power_type, dr, pr, polarity, mux, dp, hpd); | |
289 | } | |
c6983166 | 290 | |
c7eb47f9 BL |
291 | /* |
292 | * When there is no USB host (e.g. USB PD charger), | |
293 | * we are not really a UFP for the AP. | |
294 | */ | |
295 | if (dr == DR_DEVICE && | |
296 | cros_ec_usb_power_type_is_wall_wart(power_type, role)) | |
297 | dr = DR_NONE; | |
298 | ||
299 | if (force || info->dr != dr || info->pr != pr || info->dp != dp || | |
300 | info->mux != mux || info->power_type != power_type) { | |
301 | bool host_connected = false, device_connected = false; | |
302 | ||
303 | dev_dbg(dev, "Type/Role switch! type = %s role = %s\n", | |
304 | cros_ec_usb_power_type_string(power_type), | |
305 | cros_ec_usb_role_string(dr)); | |
306 | info->dr = dr; | |
307 | info->pr = pr; | |
c6983166 BL |
308 | info->dp = dp; |
309 | info->mux = mux; | |
310 | info->power_type = power_type; | |
311 | ||
c7eb47f9 BL |
312 | if (dr == DR_DEVICE) |
313 | device_connected = true; | |
314 | else if (dr == DR_HOST) | |
315 | host_connected = true; | |
c6983166 | 316 | |
c7eb47f9 BL |
317 | extcon_set_state(info->edev, EXTCON_USB, device_connected); |
318 | extcon_set_state(info->edev, EXTCON_USB_HOST, host_connected); | |
319 | extcon_set_state(info->edev, EXTCON_DISP_DP, dp); | |
320 | extcon_set_property(info->edev, EXTCON_USB, | |
321 | EXTCON_PROP_USB_VBUS, | |
322 | (union extcon_property_value)(int)pr); | |
323 | extcon_set_property(info->edev, EXTCON_USB_HOST, | |
324 | EXTCON_PROP_USB_VBUS, | |
325 | (union extcon_property_value)(int)pr); | |
326 | extcon_set_property(info->edev, EXTCON_USB, | |
327 | EXTCON_PROP_USB_TYPEC_POLARITY, | |
328 | (union extcon_property_value)(int)polarity); | |
329 | extcon_set_property(info->edev, EXTCON_USB_HOST, | |
330 | EXTCON_PROP_USB_TYPEC_POLARITY, | |
331 | (union extcon_property_value)(int)polarity); | |
c6983166 BL |
332 | extcon_set_property(info->edev, EXTCON_DISP_DP, |
333 | EXTCON_PROP_USB_TYPEC_POLARITY, | |
334 | (union extcon_property_value)(int)polarity); | |
c7eb47f9 BL |
335 | extcon_set_property(info->edev, EXTCON_USB, |
336 | EXTCON_PROP_USB_SS, | |
337 | (union extcon_property_value)(int)mux); | |
338 | extcon_set_property(info->edev, EXTCON_USB_HOST, | |
339 | EXTCON_PROP_USB_SS, | |
340 | (union extcon_property_value)(int)mux); | |
c6983166 BL |
341 | extcon_set_property(info->edev, EXTCON_DISP_DP, |
342 | EXTCON_PROP_USB_SS, | |
343 | (union extcon_property_value)(int)mux); | |
344 | extcon_set_property(info->edev, EXTCON_DISP_DP, | |
345 | EXTCON_PROP_DISP_HPD, | |
346 | (union extcon_property_value)(int)hpd); | |
347 | ||
c7eb47f9 BL |
348 | extcon_sync(info->edev, EXTCON_USB); |
349 | extcon_sync(info->edev, EXTCON_USB_HOST); | |
c6983166 BL |
350 | extcon_sync(info->edev, EXTCON_DISP_DP); |
351 | ||
352 | } else if (hpd) { | |
353 | extcon_set_property(info->edev, EXTCON_DISP_DP, | |
354 | EXTCON_PROP_DISP_HPD, | |
355 | (union extcon_property_value)(int)hpd); | |
356 | extcon_sync(info->edev, EXTCON_DISP_DP); | |
357 | } | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | static int extcon_cros_ec_event(struct notifier_block *nb, | |
363 | unsigned long queued_during_suspend, | |
364 | void *_notify) | |
365 | { | |
366 | struct cros_ec_extcon_info *info; | |
367 | struct cros_ec_device *ec; | |
368 | u32 host_event; | |
369 | ||
370 | info = container_of(nb, struct cros_ec_extcon_info, notifier); | |
371 | ec = info->ec; | |
372 | ||
373 | host_event = cros_ec_get_host_event(ec); | |
374 | if (host_event & (EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU) | | |
375 | EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_MUX))) { | |
376 | extcon_cros_ec_detect_cable(info, false); | |
377 | return NOTIFY_OK; | |
378 | } | |
379 | ||
380 | return NOTIFY_DONE; | |
381 | } | |
382 | ||
383 | static int extcon_cros_ec_probe(struct platform_device *pdev) | |
384 | { | |
385 | struct cros_ec_extcon_info *info; | |
386 | struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent); | |
387 | struct device *dev = &pdev->dev; | |
388 | struct device_node *np = dev->of_node; | |
389 | int numports, ret; | |
390 | ||
391 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); | |
392 | if (!info) | |
393 | return -ENOMEM; | |
394 | ||
395 | info->dev = dev; | |
396 | info->ec = ec; | |
397 | ||
398 | if (np) { | |
399 | u32 port; | |
400 | ||
401 | ret = of_property_read_u32(np, "google,usb-port-id", &port); | |
402 | if (ret < 0) { | |
403 | dev_err(dev, "Missing google,usb-port-id property\n"); | |
404 | return ret; | |
405 | } | |
406 | info->port_id = port; | |
407 | } else { | |
408 | info->port_id = pdev->id; | |
409 | } | |
410 | ||
411 | numports = cros_ec_pd_get_num_ports(info); | |
412 | if (numports < 0) { | |
413 | dev_err(dev, "failed getting number of ports! ret = %d\n", | |
414 | numports); | |
415 | return numports; | |
416 | } | |
417 | ||
418 | if (info->port_id >= numports) { | |
419 | dev_err(dev, "This system only supports %d ports\n", numports); | |
420 | return -ENODEV; | |
421 | } | |
422 | ||
423 | info->edev = devm_extcon_dev_allocate(dev, usb_type_c_cable); | |
424 | if (IS_ERR(info->edev)) { | |
425 | dev_err(dev, "failed to allocate extcon device\n"); | |
426 | return -ENOMEM; | |
427 | } | |
428 | ||
429 | ret = devm_extcon_dev_register(dev, info->edev); | |
430 | if (ret < 0) { | |
431 | dev_err(dev, "failed to register extcon device\n"); | |
432 | return ret; | |
433 | } | |
434 | ||
c7eb47f9 BL |
435 | extcon_set_property_capability(info->edev, EXTCON_USB, |
436 | EXTCON_PROP_USB_VBUS); | |
437 | extcon_set_property_capability(info->edev, EXTCON_USB_HOST, | |
438 | EXTCON_PROP_USB_VBUS); | |
439 | extcon_set_property_capability(info->edev, EXTCON_USB, | |
440 | EXTCON_PROP_USB_TYPEC_POLARITY); | |
441 | extcon_set_property_capability(info->edev, EXTCON_USB_HOST, | |
442 | EXTCON_PROP_USB_TYPEC_POLARITY); | |
c6983166 BL |
443 | extcon_set_property_capability(info->edev, EXTCON_DISP_DP, |
444 | EXTCON_PROP_USB_TYPEC_POLARITY); | |
c7eb47f9 BL |
445 | extcon_set_property_capability(info->edev, EXTCON_USB, |
446 | EXTCON_PROP_USB_SS); | |
447 | extcon_set_property_capability(info->edev, EXTCON_USB_HOST, | |
448 | EXTCON_PROP_USB_SS); | |
c6983166 BL |
449 | extcon_set_property_capability(info->edev, EXTCON_DISP_DP, |
450 | EXTCON_PROP_USB_SS); | |
451 | extcon_set_property_capability(info->edev, EXTCON_DISP_DP, | |
452 | EXTCON_PROP_DISP_HPD); | |
453 | ||
c7eb47f9 BL |
454 | info->dr = DR_NONE; |
455 | info->pr = false; | |
456 | ||
c6983166 BL |
457 | platform_set_drvdata(pdev, info); |
458 | ||
459 | /* Get PD events from the EC */ | |
460 | info->notifier.notifier_call = extcon_cros_ec_event; | |
461 | ret = blocking_notifier_chain_register(&info->ec->event_notifier, | |
462 | &info->notifier); | |
463 | if (ret < 0) { | |
464 | dev_err(dev, "failed to register notifier\n"); | |
465 | return ret; | |
466 | } | |
467 | ||
468 | /* Perform initial detection */ | |
469 | ret = extcon_cros_ec_detect_cable(info, true); | |
470 | if (ret < 0) { | |
471 | dev_err(dev, "failed to detect initial cable state\n"); | |
472 | goto unregister_notifier; | |
473 | } | |
474 | ||
475 | return 0; | |
476 | ||
477 | unregister_notifier: | |
478 | blocking_notifier_chain_unregister(&info->ec->event_notifier, | |
479 | &info->notifier); | |
480 | return ret; | |
481 | } | |
482 | ||
483 | static int extcon_cros_ec_remove(struct platform_device *pdev) | |
484 | { | |
485 | struct cros_ec_extcon_info *info = platform_get_drvdata(pdev); | |
486 | ||
487 | blocking_notifier_chain_unregister(&info->ec->event_notifier, | |
488 | &info->notifier); | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
493 | #ifdef CONFIG_PM_SLEEP | |
494 | static int extcon_cros_ec_suspend(struct device *dev) | |
495 | { | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static int extcon_cros_ec_resume(struct device *dev) | |
500 | { | |
501 | int ret; | |
502 | struct cros_ec_extcon_info *info = dev_get_drvdata(dev); | |
503 | ||
504 | ret = extcon_cros_ec_detect_cable(info, true); | |
505 | if (ret < 0) | |
506 | dev_err(dev, "failed to detect cable state on resume\n"); | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | static const struct dev_pm_ops extcon_cros_ec_dev_pm_ops = { | |
512 | SET_SYSTEM_SLEEP_PM_OPS(extcon_cros_ec_suspend, extcon_cros_ec_resume) | |
513 | }; | |
514 | ||
515 | #define DEV_PM_OPS (&extcon_cros_ec_dev_pm_ops) | |
516 | #else | |
517 | #define DEV_PM_OPS NULL | |
518 | #endif /* CONFIG_PM_SLEEP */ | |
519 | ||
520 | #ifdef CONFIG_OF | |
521 | static const struct of_device_id extcon_cros_ec_of_match[] = { | |
522 | { .compatible = "google,extcon-usbc-cros-ec" }, | |
523 | { /* sentinel */ } | |
524 | }; | |
525 | MODULE_DEVICE_TABLE(of, extcon_cros_ec_of_match); | |
526 | #endif /* CONFIG_OF */ | |
527 | ||
528 | static struct platform_driver extcon_cros_ec_driver = { | |
529 | .driver = { | |
530 | .name = "extcon-usbc-cros-ec", | |
531 | .of_match_table = of_match_ptr(extcon_cros_ec_of_match), | |
532 | .pm = DEV_PM_OPS, | |
533 | }, | |
534 | .remove = extcon_cros_ec_remove, | |
535 | .probe = extcon_cros_ec_probe, | |
536 | }; | |
537 | ||
538 | module_platform_driver(extcon_cros_ec_driver); | |
539 | ||
540 | MODULE_DESCRIPTION("ChromeOS Embedded Controller extcon driver"); | |
541 | MODULE_AUTHOR("Benson Leung <bleung@chromium.org>"); | |
686b3058 | 542 | MODULE_LICENSE("GPL v2"); |