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()
222 	typec_switch_set(alt_port->typec_switch, alt_port->orientation);  in pmic_glink_altmode_worker()
224 	if (alt_port->svid == USB_TYPEC_DP_SID && alt_port->mode == 0xff)  in pmic_glink_altmode_worker()
226 	else if (alt_port->svid == USB_TYPEC_DP_SID)  in pmic_glink_altmode_worker()
227 		pmic_glink_altmode_enable_dp(altmode, alt_port, alt_port->mode,  in pmic_glink_altmode_worker()
228 					     alt_port->hpd_state, alt_port->hpd_irq);  in pmic_glink_altmode_worker()
232 	drm_aux_hpd_bridge_notify(&alt_port->bridge->dev,  in pmic_glink_altmode_worker()
233 				  alt_port->hpd_state ?  in pmic_glink_altmode_worker()
237 	pmic_glink_altmode_request(altmode, ALTMODE_PAN_ACK, alt_port->index);  in pmic_glink_altmode_worker()
272 		dev_warn(altmode->dev, "invalid length of USBC_NOTIFY indication: %zd\n", len);  in pmic_glink_altmode_sc8180xp_notify()
277 	notification = le32_to_cpu(msg->notification);  in pmic_glink_altmode_sc8180xp_notify()
287 	if (port >= ARRAY_SIZE(altmode->ports) || !altmode->ports[port].altmode) {  in pmic_glink_altmode_sc8180xp_notify()
288 		dev_dbg(altmode->dev, "notification on undefined port %d\n", port);  in pmic_glink_altmode_sc8180xp_notify()
292 	alt_port = &altmode->ports[port];  in pmic_glink_altmode_sc8180xp_notify()
293 	alt_port->orientation = pmic_glink_altmode_orientation(orientation);  in pmic_glink_altmode_sc8180xp_notify()
294 	alt_port->svid = svid;  in pmic_glink_altmode_sc8180xp_notify()
295 	alt_port->mode = mode;  in pmic_glink_altmode_sc8180xp_notify()
296 	alt_port->hpd_state = hpd_state;  in pmic_glink_altmode_sc8180xp_notify()
297 	alt_port->hpd_irq = hpd_irq;  in pmic_glink_altmode_sc8180xp_notify()
298 	schedule_work(&alt_port->work);  in pmic_glink_altmode_sc8180xp_notify()
317 		dev_warn(altmode->dev, "invalid length USBC_NOTIFY_IND: %zd\n",  in pmic_glink_altmode_sc8280xp_notify()
324 	port = notify->payload[0];  in pmic_glink_altmode_sc8280xp_notify()
325 	orientation = notify->payload[1];  in pmic_glink_altmode_sc8280xp_notify()
326 	mode = FIELD_GET(SC8280XP_DPAM_MASK, notify->payload[8]) - DPAM_HPD_A;  in pmic_glink_altmode_sc8280xp_notify()
327 	hpd_state = FIELD_GET(SC8280XP_HPD_STATE_MASK, notify->payload[8]);  in pmic_glink_altmode_sc8280xp_notify()
328 	hpd_irq = FIELD_GET(SC8280XP_HPD_IRQ_MASK, notify->payload[8]);  in pmic_glink_altmode_sc8280xp_notify()
330 	if (port >= ARRAY_SIZE(altmode->ports) || !altmode->ports[port].altmode) {  in pmic_glink_altmode_sc8280xp_notify()
331 		dev_dbg(altmode->dev, "notification on undefined port %d\n", port);  in pmic_glink_altmode_sc8280xp_notify()
335 	alt_port = &altmode->ports[port];  in pmic_glink_altmode_sc8280xp_notify()
336 	alt_port->orientation = pmic_glink_altmode_orientation(orientation);  in pmic_glink_altmode_sc8280xp_notify()
337 	alt_port->svid = svid;  in pmic_glink_altmode_sc8280xp_notify()
338 	alt_port->mode = mode;  in pmic_glink_altmode_sc8280xp_notify()
339 	alt_port->hpd_state = hpd_state;  in pmic_glink_altmode_sc8280xp_notify()
340 	alt_port->hpd_irq = hpd_irq;  in pmic_glink_altmode_sc8280xp_notify()
341 	schedule_work(&alt_port->work);  in pmic_glink_altmode_sc8280xp_notify()
351 	opcode = le32_to_cpu(hdr->opcode) & 0xff;  in pmic_glink_altmode_callback()
352 	svid = le32_to_cpu(hdr->opcode) >> 16;  in pmic_glink_altmode_callback()
354 	switch (opcode) {  in pmic_glink_altmode_callback()
356 		complete(&altmode->pan_ack);  in pmic_glink_altmode_callback()
389 		dev_err(altmode->dev, "failed to request altmode notifications: %d\n", ret);  in pmic_glink_altmode_enable_worker()
397 		schedule_work(&altmode->enable_work);  in pmic_glink_altmode_pdr_notify()
401 	{ .compatible = "qcom,sc8180x-pmic-glink", .data = (void *)PMIC_GLINK_OWNER_USBC },
412 	struct device *dev = &adev->dev;  in pmic_glink_altmode_probe()
418 		return -ENOMEM;  in pmic_glink_altmode_probe()
420 	altmode->dev = dev;  in pmic_glink_altmode_probe()
422 	match = of_match_device(pmic_glink_altmode_of_quirks, dev->parent);  in pmic_glink_altmode_probe()
424 		altmode->owner_id = (unsigned long)match->data;  in pmic_glink_altmode_probe()
426 		altmode->owner_id = PMIC_GLINK_OWNER_USBC_PAN;  in pmic_glink_altmode_probe()
428 	INIT_WORK(&altmode->enable_work, pmic_glink_altmode_enable_worker);  in pmic_glink_altmode_probe()
429 	init_completion(&altmode->pan_ack);  in pmic_glink_altmode_probe()
430 	mutex_init(&altmode->lock);  in pmic_glink_altmode_probe()
440 		if (port >= ARRAY_SIZE(altmode->ports)) {  in pmic_glink_altmode_probe()
445 		if (altmode->ports[port].altmode) {  in pmic_glink_altmode_probe()
448 			return -EINVAL;  in pmic_glink_altmode_probe()
451 		alt_port = &altmode->ports[port];  in pmic_glink_altmode_probe()
452 		alt_port->altmode = altmode;  in pmic_glink_altmode_probe()
453 		alt_port->index = port;  in pmic_glink_altmode_probe()
454 		INIT_WORK(&alt_port->work, pmic_glink_altmode_worker);  in pmic_glink_altmode_probe()
456 		alt_port->bridge = devm_drm_dp_hpd_bridge_alloc(dev, to_of_node(fwnode));  in pmic_glink_altmode_probe()
457 		if (IS_ERR(alt_port->bridge)) {  in pmic_glink_altmode_probe()
459 			return PTR_ERR(alt_port->bridge);  in pmic_glink_altmode_probe()
462 		alt_port->dp_alt.svid = USB_TYPEC_DP_SID;  in pmic_glink_altmode_probe()
463 		alt_port->dp_alt.mode = USB_TYPEC_DP_MODE;  in pmic_glink_altmode_probe()
464 		alt_port->dp_alt.active = 1;  in pmic_glink_altmode_probe()
466 		alt_port->typec_mux = fwnode_typec_mux_get(fwnode);  in pmic_glink_altmode_probe()
467 		if (IS_ERR(alt_port->typec_mux)) {  in pmic_glink_altmode_probe()
469 			return dev_err_probe(dev, PTR_ERR(alt_port->typec_mux),  in pmic_glink_altmode_probe()
470 					     "failed to acquire mode-switch for port: %d\n",  in pmic_glink_altmode_probe()
475 					       alt_port->typec_mux);  in pmic_glink_altmode_probe()
481 		alt_port->typec_retimer = fwnode_typec_retimer_get(fwnode);  in pmic_glink_altmode_probe()
482 		if (IS_ERR(alt_port->typec_retimer)) {  in pmic_glink_altmode_probe()
484 			return dev_err_probe(dev, PTR_ERR(alt_port->typec_retimer),  in pmic_glink_altmode_probe()
485 					     "failed to acquire retimer-switch for port: %d\n",  in pmic_glink_altmode_probe()
490 					       alt_port->typec_retimer);  in pmic_glink_altmode_probe()
496 		alt_port->typec_switch = fwnode_typec_switch_get(fwnode);  in pmic_glink_altmode_probe()
497 		if (IS_ERR(alt_port->typec_switch)) {  in pmic_glink_altmode_probe()
499 			return dev_err_probe(dev, PTR_ERR(alt_port->typec_switch),  in pmic_glink_altmode_probe()
500 					     "failed to acquire orientation-switch for port: %d\n",  in pmic_glink_altmode_probe()
505 					       alt_port->typec_switch);  in pmic_glink_altmode_probe()
512 	for (port = 0; port < ARRAY_SIZE(altmode->ports); port++) {  in pmic_glink_altmode_probe()
513 		alt_port = &altmode->ports[port];  in pmic_glink_altmode_probe()
514 		if (!alt_port->bridge)  in pmic_glink_altmode_probe()
517 		ret = devm_drm_dp_hpd_bridge_add(dev, alt_port->bridge);  in pmic_glink_altmode_probe()
522 	altmode->client = devm_pmic_glink_client_alloc(dev,  in pmic_glink_altmode_probe()
523 						       altmode->owner_id,  in pmic_glink_altmode_probe()
527 	if (IS_ERR(altmode->client))  in pmic_glink_altmode_probe()
528 		return PTR_ERR(altmode->client);  in pmic_glink_altmode_probe()
530 	pmic_glink_client_register(altmode->client);  in pmic_glink_altmode_probe()