1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
15 #include <drm/bridge/aux-bridge.h>
118 	guard(mutex)(&altmode->lock);  in pmic_glink_altmode_request()
120 	req.hdr.owner = cpu_to_le32(altmode->owner_id);  in pmic_glink_altmode_request()
126 	ret = pmic_glink_send(altmode->client, &req, sizeof(req));  in pmic_glink_altmode_request()
128 		dev_err(altmode->dev, "failed to send altmode request: %#x (%d)\n", cmd, ret);  in pmic_glink_altmode_request()
132 	left = wait_for_completion_timeout(&altmode->pan_ack, 5 * HZ);  in pmic_glink_altmode_request()
134 		dev_err(altmode->dev, "timeout waiting for altmode request ack for: %#x\n", cmd);  in pmic_glink_altmode_request()
135 		return -ETIMEDOUT;  in pmic_glink_altmode_request()
156 	port->state.alt = &port->dp_alt;  in pmic_glink_altmode_enable_dp()
157 	port->state.data = &dp_data;  in pmic_glink_altmode_enable_dp()
158 	port->state.mode = TYPEC_MODAL_STATE(mode);  in pmic_glink_altmode_enable_dp()
160 	ret = typec_mux_set(port->typec_mux, &port->state);  in pmic_glink_altmode_enable_dp()
162 		dev_err(altmode->dev, "failed to switch mux to DP: %d\n", ret);  in pmic_glink_altmode_enable_dp()
164 	port->retimer_state.alt = &port->dp_alt;  in pmic_glink_altmode_enable_dp()
165 	port->retimer_state.data = &dp_data;  in pmic_glink_altmode_enable_dp()
166 	port->retimer_state.mode = TYPEC_MODAL_STATE(mode);  in pmic_glink_altmode_enable_dp()
168 	ret = typec_retimer_set(port->typec_retimer, &port->retimer_state);  in pmic_glink_altmode_enable_dp()
170 		dev_err(altmode->dev, "failed to setup retimer to DP: %d\n", ret);  in pmic_glink_altmode_enable_dp()
178 	port->state.alt = NULL;  in pmic_glink_altmode_enable_usb()
179 	port->state.data = NULL;  in pmic_glink_altmode_enable_usb()
180 	port->state.mode = TYPEC_STATE_USB;  in pmic_glink_altmode_enable_usb()
182 	ret = typec_mux_set(port->typec_mux, &port->state);  in pmic_glink_altmode_enable_usb()
184 		dev_err(altmode->dev, "failed to switch mux to USB: %d\n", ret);  in pmic_glink_altmode_enable_usb()
186 	port->retimer_state.alt = NULL;  in pmic_glink_altmode_enable_usb()
187 	port->retimer_state.data = NULL;  in pmic_glink_altmode_enable_usb()
188 	port->retimer_state.mode = TYPEC_STATE_USB;  in pmic_glink_altmode_enable_usb()
190 	ret = typec_retimer_set(port->typec_retimer, &port->retimer_state);  in pmic_glink_altmode_enable_usb()
192 		dev_err(altmode->dev, "failed to setup retimer to USB: %d\n", ret);  in pmic_glink_altmode_enable_usb()
200 	port->state.alt = NULL;  in pmic_glink_altmode_safe()
201 	port->state.data = NULL;  in pmic_glink_altmode_safe()
202 	port->state.mode = TYPEC_STATE_SAFE;  in pmic_glink_altmode_safe()
204 	ret = typec_mux_set(port->typec_mux, &port->state);  in pmic_glink_altmode_safe()
206 		dev_err(altmode->dev, "failed to switch mux to safe mode: %d\n", ret);  in pmic_glink_altmode_safe()
208 	port->retimer_state.alt = NULL;  in pmic_glink_altmode_safe()
209 	port->retimer_state.data = NULL;  in pmic_glink_altmode_safe()
210 	port->retimer_state.mode = TYPEC_STATE_SAFE;  in pmic_glink_altmode_safe()
212 	ret = typec_retimer_set(port->typec_retimer, &port->retimer_state);  in pmic_glink_altmode_safe()
214 		dev_err(altmode->dev, "failed to setup retimer to USB: %d\n", ret);  in pmic_glink_altmode_safe()
220 	struct pmic_glink_altmode *altmode = alt_port->altmode;  in pmic_glink_altmode_worker()
223 	typec_switch_set(alt_port->typec_switch, alt_port->orientation);  in pmic_glink_altmode_worker()
225 	if (alt_port->svid == USB_TYPEC_DP_SID) {  in pmic_glink_altmode_worker()
226 		if (alt_port->mode == 0xff) {  in pmic_glink_altmode_worker()
230 						     alt_port->mode,  in pmic_glink_altmode_worker()
231 						     alt_port->hpd_state,  in pmic_glink_altmode_worker()
232 						     alt_port->hpd_irq);  in pmic_glink_altmode_worker()
235 		if (alt_port->hpd_state)  in pmic_glink_altmode_worker()
240 		drm_aux_hpd_bridge_notify(&alt_port->bridge->dev, conn_status);  in pmic_glink_altmode_worker()
245 	pmic_glink_altmode_request(altmode, ALTMODE_PAN_ACK, alt_port->index);  in pmic_glink_altmode_worker()
280 		dev_warn(altmode->dev, "invalid length of USBC_NOTIFY indication: %zd\n", len);  in pmic_glink_altmode_sc8180xp_notify()
285 	notification = le32_to_cpu(msg->notification);  in pmic_glink_altmode_sc8180xp_notify()
295 	if (port >= ARRAY_SIZE(altmode->ports) || !altmode->ports[port].altmode) {  in pmic_glink_altmode_sc8180xp_notify()
296 		dev_dbg(altmode->dev, "notification on undefined port %d\n", port);  in pmic_glink_altmode_sc8180xp_notify()
300 	alt_port = &altmode->ports[port];  in pmic_glink_altmode_sc8180xp_notify()
301 	alt_port->orientation = pmic_glink_altmode_orientation(orientation);  in pmic_glink_altmode_sc8180xp_notify()
302 	alt_port->svid = svid;  in pmic_glink_altmode_sc8180xp_notify()
303 	alt_port->mode = mode;  in pmic_glink_altmode_sc8180xp_notify()
304 	alt_port->hpd_state = hpd_state;  in pmic_glink_altmode_sc8180xp_notify()
305 	alt_port->hpd_irq = hpd_irq;  in pmic_glink_altmode_sc8180xp_notify()
306 	schedule_work(&alt_port->work);  in pmic_glink_altmode_sc8180xp_notify()
325 		dev_warn(altmode->dev, "invalid length USBC_NOTIFY_IND: %zd\n",  in pmic_glink_altmode_sc8280xp_notify()
332 	port = notify->payload[0];  in pmic_glink_altmode_sc8280xp_notify()
333 	orientation = notify->payload[1];  in pmic_glink_altmode_sc8280xp_notify()
334 	mode = FIELD_GET(SC8280XP_DPAM_MASK, notify->payload[8]) - DPAM_HPD_A;  in pmic_glink_altmode_sc8280xp_notify()
335 	hpd_state = FIELD_GET(SC8280XP_HPD_STATE_MASK, notify->payload[8]);  in pmic_glink_altmode_sc8280xp_notify()
336 	hpd_irq = FIELD_GET(SC8280XP_HPD_IRQ_MASK, notify->payload[8]);  in pmic_glink_altmode_sc8280xp_notify()
338 	if (port >= ARRAY_SIZE(altmode->ports) || !altmode->ports[port].altmode) {  in pmic_glink_altmode_sc8280xp_notify()
339 		dev_dbg(altmode->dev, "notification on undefined port %d\n", port);  in pmic_glink_altmode_sc8280xp_notify()
343 	alt_port = &altmode->ports[port];  in pmic_glink_altmode_sc8280xp_notify()
344 	alt_port->orientation = pmic_glink_altmode_orientation(orientation);  in pmic_glink_altmode_sc8280xp_notify()
345 	alt_port->svid = svid;  in pmic_glink_altmode_sc8280xp_notify()
346 	alt_port->mode = mode;  in pmic_glink_altmode_sc8280xp_notify()
347 	alt_port->hpd_state = hpd_state;  in pmic_glink_altmode_sc8280xp_notify()
348 	alt_port->hpd_irq = hpd_irq;  in pmic_glink_altmode_sc8280xp_notify()
349 	schedule_work(&alt_port->work);  in pmic_glink_altmode_sc8280xp_notify()
359 	opcode = le32_to_cpu(hdr->opcode) & 0xff;  in pmic_glink_altmode_callback()
360 	svid = le32_to_cpu(hdr->opcode) >> 16;  in pmic_glink_altmode_callback()
364 		complete(&altmode->pan_ack);  in pmic_glink_altmode_callback()
397 		dev_err(altmode->dev, "failed to request altmode notifications: %d\n", ret);  in pmic_glink_altmode_enable_worker()
405 		schedule_work(&altmode->enable_work);  in pmic_glink_altmode_pdr_notify()
409 	{ .compatible = "qcom,sc8180x-pmic-glink", .data = (void *)PMIC_GLINK_OWNER_USBC },
420 	struct device *dev = &adev->dev;  in pmic_glink_altmode_probe()
426 		return -ENOMEM;  in pmic_glink_altmode_probe()
428 	altmode->dev = dev;  in pmic_glink_altmode_probe()
430 	match = of_match_device(pmic_glink_altmode_of_quirks, dev->parent);  in pmic_glink_altmode_probe()
432 		altmode->owner_id = (unsigned long)match->data;  in pmic_glink_altmode_probe()
434 		altmode->owner_id = PMIC_GLINK_OWNER_USBC_PAN;  in pmic_glink_altmode_probe()
436 	INIT_WORK(&altmode->enable_work, pmic_glink_altmode_enable_worker);  in pmic_glink_altmode_probe()
437 	init_completion(&altmode->pan_ack);  in pmic_glink_altmode_probe()
438 	mutex_init(&altmode->lock);  in pmic_glink_altmode_probe()
448 		if (port >= ARRAY_SIZE(altmode->ports)) {  in pmic_glink_altmode_probe()
453 		if (altmode->ports[port].altmode) {  in pmic_glink_altmode_probe()
456 			return -EINVAL;  in pmic_glink_altmode_probe()
459 		alt_port = &altmode->ports[port];  in pmic_glink_altmode_probe()
460 		alt_port->altmode = altmode;  in pmic_glink_altmode_probe()
461 		alt_port->index = port;  in pmic_glink_altmode_probe()
462 		INIT_WORK(&alt_port->work, pmic_glink_altmode_worker);  in pmic_glink_altmode_probe()
464 		alt_port->bridge = devm_drm_dp_hpd_bridge_alloc(dev, to_of_node(fwnode));  in pmic_glink_altmode_probe()
465 		if (IS_ERR(alt_port->bridge)) {  in pmic_glink_altmode_probe()
467 			return PTR_ERR(alt_port->bridge);  in pmic_glink_altmode_probe()
470 		alt_port->dp_alt.svid = USB_TYPEC_DP_SID;  in pmic_glink_altmode_probe()
471 		alt_port->dp_alt.mode = USB_TYPEC_DP_MODE;  in pmic_glink_altmode_probe()
472 		alt_port->dp_alt.active = 1;  in pmic_glink_altmode_probe()
474 		alt_port->typec_mux = fwnode_typec_mux_get(fwnode);  in pmic_glink_altmode_probe()
475 		if (IS_ERR(alt_port->typec_mux)) {  in pmic_glink_altmode_probe()
477 			return dev_err_probe(dev, PTR_ERR(alt_port->typec_mux),  in pmic_glink_altmode_probe()
478 					     "failed to acquire mode-switch for port: %d\n",  in pmic_glink_altmode_probe()
483 					       alt_port->typec_mux);  in pmic_glink_altmode_probe()
489 		alt_port->typec_retimer = fwnode_typec_retimer_get(fwnode);  in pmic_glink_altmode_probe()
490 		if (IS_ERR(alt_port->typec_retimer)) {  in pmic_glink_altmode_probe()
492 			return dev_err_probe(dev, PTR_ERR(alt_port->typec_retimer),  in pmic_glink_altmode_probe()
493 					     "failed to acquire retimer-switch for port: %d\n",  in pmic_glink_altmode_probe()
498 					       alt_port->typec_retimer);  in pmic_glink_altmode_probe()
504 		alt_port->typec_switch = fwnode_typec_switch_get(fwnode);  in pmic_glink_altmode_probe()
505 		if (IS_ERR(alt_port->typec_switch)) {  in pmic_glink_altmode_probe()
507 			return dev_err_probe(dev, PTR_ERR(alt_port->typec_switch),  in pmic_glink_altmode_probe()
508 					     "failed to acquire orientation-switch for port: %d\n",  in pmic_glink_altmode_probe()
513 					       alt_port->typec_switch);  in pmic_glink_altmode_probe()
520 	for (port = 0; port < ARRAY_SIZE(altmode->ports); port++) {  in pmic_glink_altmode_probe()
521 		alt_port = &altmode->ports[port];  in pmic_glink_altmode_probe()
522 		if (!alt_port->bridge)  in pmic_glink_altmode_probe()
525 		ret = devm_drm_dp_hpd_bridge_add(dev, alt_port->bridge);  in pmic_glink_altmode_probe()
530 	altmode->client = devm_pmic_glink_client_alloc(dev,  in pmic_glink_altmode_probe()
531 						       altmode->owner_id,  in pmic_glink_altmode_probe()
535 	if (IS_ERR(altmode->client))  in pmic_glink_altmode_probe()
536 		return PTR_ERR(altmode->client);  in pmic_glink_altmode_probe()
538 	pmic_glink_client_register(altmode->client);  in pmic_glink_altmode_probe()
557 MODULE_DESCRIPTION("Qualcomm PMIC GLINK Altmode driver");