1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/extcon-provider.h>
28 	unsigned int dr; /* data role */
29 	bool pr; /* power role (true if VBUS enabled) */
49  * cros_ec_pd_command() - Send a command to the EC.
53  * @outdata: EC command output data
55  * @indata: EC command input data
73 		return -ENOMEM;  in cros_ec_pd_command()
75 	msg->version = version;  in cros_ec_pd_command()
76 	msg->command = command;  in cros_ec_pd_command()
77 	msg->outsize = outsize;  in cros_ec_pd_command()
78 	msg->insize = insize;  in cros_ec_pd_command()
81 		memcpy(msg->data, outdata, outsize);  in cros_ec_pd_command()
83 	ret = cros_ec_cmd_xfer_status(info->ec, msg);  in cros_ec_pd_command()
85 		memcpy(indata, msg->data, insize);  in cros_ec_pd_command()
92  * cros_ec_usb_get_power_type() - Get power type info about PD device attached
104 	req.port = info->port_id;  in cros_ec_usb_get_power_type()
114  * cros_ec_usb_get_pd_mux_state() - Get PD mux state for given port.
125 	req.port = info->port_id;  in cros_ec_usb_get_pd_mux_state()
136  * cros_ec_usb_get_role() - Get role info about possible PD device attached to a
141  * Return: role info on success, -ENOTCONN if no cable is connected, <0 on
151 	pd_control.port = info->port_id;  in cros_ec_usb_get_role()
152 	pd_control.role = USB_PD_CTRL_ROLE_NO_CHANGE;  in cros_ec_usb_get_role()
162 		return -ENOTCONN;  in cros_ec_usb_get_role()
166 	return resp.role;  in cros_ec_usb_get_role()
170  * cros_ec_pd_get_num_ports() - Get number of EC charge ports.
188 static const char *cros_ec_usb_role_string(unsigned int role)  in cros_ec_usb_role_string()  argument
190 	return role == DR_NONE ? "DISCONNECTED" :  in cros_ec_usb_role_string()
191 		(role == DR_HOST ? "DFP" : "UFP");  in cros_ec_usb_role_string()
223 						unsigned int role)  in cros_ec_usb_power_type_is_wall_wart()  argument
228 	 * here from that code because that breaks Suzy-Q and other kinds of  in cros_ec_usb_power_type_is_wall_wart()
229 	 * USB Type-C cables and peripherals.  in cros_ec_usb_power_type_is_wall_wart()
250 	struct device *dev = info->dev;  in extcon_cros_ec_detect_cable()
251 	int role, power_type;  in extcon_cros_ec_detect_cable()  local
266 	role = cros_ec_usb_get_role(info, &polarity);  in extcon_cros_ec_detect_cable()
267 	if (role < 0) {  in extcon_cros_ec_detect_cable()
268 		if (role != -ENOTCONN) {  in extcon_cros_ec_detect_cable()
269 			dev_err(dev, "failed getting role err = %d\n", role);  in extcon_cros_ec_detect_cable()
270 			return role;  in extcon_cros_ec_detect_cable()
276 		dr = (role & PD_CTRL_RESP_ROLE_DATA) ? DR_HOST : DR_DEVICE;  in extcon_cros_ec_detect_cable()
277 		pr = (role & PD_CTRL_RESP_ROLE_POWER);  in extcon_cros_ec_detect_cable()
287 			"connected role 0x%x pwr type %d dr %d pr %d pol %d mux %d dp %d hpd %d\n",  in extcon_cros_ec_detect_cable()
288 			role, power_type, dr, pr, polarity, mux, dp, hpd);  in extcon_cros_ec_detect_cable()
296 	    cros_ec_usb_power_type_is_wall_wart(power_type, role))  in extcon_cros_ec_detect_cable()
299 	if (force || info->dr != dr || info->pr != pr || info->dp != dp ||  in extcon_cros_ec_detect_cable()
300 	    info->mux != mux || info->power_type != power_type) {  in extcon_cros_ec_detect_cable()
303 		dev_dbg(dev, "Type/Role switch! type = %s role = %s\n",  in extcon_cros_ec_detect_cable()
306 		info->dr = dr;  in extcon_cros_ec_detect_cable()
307 		info->pr = pr;  in extcon_cros_ec_detect_cable()
308 		info->dp = dp;  in extcon_cros_ec_detect_cable()
309 		info->mux = mux;  in extcon_cros_ec_detect_cable()
310 		info->power_type = power_type;  in extcon_cros_ec_detect_cable()
317 		extcon_set_state(info->edev, EXTCON_USB, device_connected);  in extcon_cros_ec_detect_cable()
318 		extcon_set_state(info->edev, EXTCON_USB_HOST, host_connected);  in extcon_cros_ec_detect_cable()
319 		extcon_set_state(info->edev, EXTCON_DISP_DP, dp);  in extcon_cros_ec_detect_cable()
320 		extcon_set_property(info->edev, EXTCON_USB,  in extcon_cros_ec_detect_cable()
323 		extcon_set_property(info->edev, EXTCON_USB_HOST,  in extcon_cros_ec_detect_cable()
326 		extcon_set_property(info->edev, EXTCON_USB,  in extcon_cros_ec_detect_cable()
329 		extcon_set_property(info->edev, EXTCON_USB_HOST,  in extcon_cros_ec_detect_cable()
332 		extcon_set_property(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_detect_cable()
335 		extcon_set_property(info->edev, EXTCON_USB,  in extcon_cros_ec_detect_cable()
338 		extcon_set_property(info->edev, EXTCON_USB_HOST,  in extcon_cros_ec_detect_cable()
341 		extcon_set_property(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_detect_cable()
344 		extcon_set_property(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_detect_cable()
348 		extcon_sync(info->edev, EXTCON_USB);  in extcon_cros_ec_detect_cable()
349 		extcon_sync(info->edev, EXTCON_USB_HOST);  in extcon_cros_ec_detect_cable()
350 		extcon_sync(info->edev, EXTCON_DISP_DP);  in extcon_cros_ec_detect_cable()
353 		extcon_set_property(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_detect_cable()
356 		extcon_sync(info->edev, EXTCON_DISP_DP);  in extcon_cros_ec_detect_cable()
371 	ec = info->ec;  in extcon_cros_ec_event()
386 	struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);  in extcon_cros_ec_probe()
387 	struct device *dev = &pdev->dev;  in extcon_cros_ec_probe()
388 	struct device_node *np = dev->of_node;  in extcon_cros_ec_probe()
393 		return -ENOMEM;  in extcon_cros_ec_probe()
395 	info->dev = dev;  in extcon_cros_ec_probe()
396 	info->ec = ec;  in extcon_cros_ec_probe()
401 		ret = of_property_read_u32(np, "google,usb-port-id", &port);  in extcon_cros_ec_probe()
403 			dev_err(dev, "Missing google,usb-port-id property\n");  in extcon_cros_ec_probe()
406 		info->port_id = port;  in extcon_cros_ec_probe()
408 		info->port_id = pdev->id;  in extcon_cros_ec_probe()
418 	if (info->port_id >= numports) {  in extcon_cros_ec_probe()
420 		return -ENODEV;  in extcon_cros_ec_probe()
423 	info->edev = devm_extcon_dev_allocate(dev, usb_type_c_cable);  in extcon_cros_ec_probe()
424 	if (IS_ERR(info->edev)) {  in extcon_cros_ec_probe()
426 		return -ENOMEM;  in extcon_cros_ec_probe()
429 	ret = devm_extcon_dev_register(dev, info->edev);  in extcon_cros_ec_probe()
435 	extcon_set_property_capability(info->edev, EXTCON_USB,  in extcon_cros_ec_probe()
437 	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,  in extcon_cros_ec_probe()
439 	extcon_set_property_capability(info->edev, EXTCON_USB,  in extcon_cros_ec_probe()
441 	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,  in extcon_cros_ec_probe()
443 	extcon_set_property_capability(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_probe()
445 	extcon_set_property_capability(info->edev, EXTCON_USB,  in extcon_cros_ec_probe()
447 	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,  in extcon_cros_ec_probe()
449 	extcon_set_property_capability(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_probe()
451 	extcon_set_property_capability(info->edev, EXTCON_DISP_DP,  in extcon_cros_ec_probe()
454 	info->dr = DR_NONE;  in extcon_cros_ec_probe()
455 	info->pr = false;  in extcon_cros_ec_probe()
460 	info->notifier.notifier_call = extcon_cros_ec_event;  in extcon_cros_ec_probe()
461 	ret = blocking_notifier_chain_register(&info->ec->event_notifier,  in extcon_cros_ec_probe()
462 					       &info->notifier);  in extcon_cros_ec_probe()
478 	blocking_notifier_chain_unregister(&info->ec->event_notifier,  in extcon_cros_ec_probe()
479 					   &info->notifier);  in extcon_cros_ec_probe()
487 	blocking_notifier_chain_unregister(&info->ec->event_notifier,  in extcon_cros_ec_remove()
488 					   &info->notifier);  in extcon_cros_ec_remove()
522 	{ .compatible = "google,extcon-usbc-cros-ec" },
530 		.name  = "extcon-usbc-cros-ec",