16 #include "tcpci.h"
29 struct tcpci {  struct
44 	struct tcpci *tcpci;  argument
48 static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc)  in tcpc_to_tcpci()
50 	return container_of(tcpc, struct tcpci, tcpc);  in tcpc_to_tcpci()
53 static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, u16 *val)  in tcpci_read16()  argument
58 	ret = dm_i2c_read(tcpci->dev, reg, buffer, 2);  in tcpci_read16()
70 static int tcpci_block_read(struct tcpci *tcpci, unsigned int reg,  in tcpci_block_read()  argument
75 	ret = dm_i2c_read(tcpci->dev, reg, data, length);  in tcpci_block_read()
83 static int tcpci_write16(struct tcpci *tcpci, unsigned int reg, u16 val)  in tcpci_write16()  argument
90 	ret = dm_i2c_write(tcpci->dev, reg, buffer, 2);  in tcpci_write16()
98 static int tcpci_block_write(struct tcpci *tcpci, unsigned int reg,  in tcpci_block_write()  argument
103 	ret = dm_i2c_write(tcpci->dev, reg, data, length);  in tcpci_block_write()
113 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_set_cc()  local
151 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_ROLE_CTRL, reg);  in tcpci_set_cc()
163 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_start_toggling()  local
170 	if (tcpci->data->start_drp_toggling) {  in tcpci_start_toggling()
171 		ret = tcpci->data->start_drp_toggling(tcpci, tcpci->data, cc);  in tcpci_start_toggling()
198 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_ROLE_CTRL, reg);  in tcpci_start_toggling()
201 	return dm_i2c_reg_write(tcpci->dev, TCPC_COMMAND,  in tcpci_start_toggling()
225 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_get_cc()  local
228 	role_control = dm_i2c_reg_read(tcpci->dev, TCPC_ROLE_CTRL);  in tcpci_get_cc()
232 	reg = dm_i2c_reg_read(tcpci->dev, TCPC_CC_STATUS);  in tcpci_get_cc()
251 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_set_polarity()  local
257 	reg = dm_i2c_reg_read(tcpci->dev, TCPC_ROLE_CTRL);  in tcpci_set_polarity()
299 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_ROLE_CTRL, reg);  in tcpci_set_polarity()
303 	return dm_i2c_reg_write(tcpci->dev, TCPC_TCPC_CTRL,  in tcpci_set_polarity()
310 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_set_vconn()  local
315 	if (tcpci->data->set_vconn) {  in tcpci_set_vconn()
316 		ret = tcpci->data->set_vconn(tcpci, tcpci->data, enable);  in tcpci_set_vconn()
321 	reg = dm_i2c_reg_read(tcpci->dev, TCPC_POWER_CTRL);  in tcpci_set_vconn()
326 	return dm_i2c_reg_write(tcpci->dev, TCPC_POWER_CTRL, reg);  in tcpci_set_vconn()
332 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_set_roles()  local
341 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_MSG_HDR_INFO, reg);  in tcpci_set_roles()
350 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_set_pd_rx()  local
356 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_RX_DETECT, reg);  in tcpci_set_pd_rx()
365 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_get_vbus()  local
368 	reg = dm_i2c_reg_read(tcpci->dev, TCPC_POWER_STATUS);  in tcpci_get_vbus()
377 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_set_vbus()  local
383 		ret = dm_i2c_reg_write(tcpci->dev, TCPC_COMMAND,  in tcpci_set_vbus()
390 		ret = dm_i2c_reg_write(tcpci->dev, TCPC_COMMAND,  in tcpci_set_vbus()
397 		ret = dm_i2c_reg_write(tcpci->dev, TCPC_COMMAND,  in tcpci_set_vbus()
404 		ret = dm_i2c_reg_write(tcpci->dev, TCPC_COMMAND,  in tcpci_set_vbus()
418 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_pd_transmit()  local
424 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_TX_BYTE_CNT, cnt + 2);  in tcpci_pd_transmit()
428 	ret = tcpci_write16(tcpci, TCPC_TX_HDR, header);  in tcpci_pd_transmit()
433 		ret = tcpci_block_write(tcpci, TCPC_TX_DATA,  in tcpci_pd_transmit()
441 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_TRANSMIT, reg);  in tcpci_pd_transmit()
450 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_init()  local
456 		reg = dm_i2c_reg_read(tcpci->dev, TCPC_POWER_STATUS);  in tcpci_init()
468 	if (tcpci->data->init) {  in tcpci_init()
469 		ret = tcpci->data->init(tcpci, tcpci->data);  in tcpci_init()
475 	ret = tcpci_write16(tcpci, TCPC_ALERT, 0xffff);  in tcpci_init()
479 	if (tcpci->controls_vbus)  in tcpci_init()
483 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_POWER_STATUS_MASK, reg);  in tcpci_init()
488 	ret = dm_i2c_reg_write(tcpci->dev, TCPC_COMMAND,  in tcpci_init()
496 	if (tcpci->controls_vbus)  in tcpci_init()
498 	return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg);  in tcpci_init()
504 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_poll_event()  local
506 	if (tcpci->gpio_cc_int_present)  in tcpci_poll_event()
507 		if (!dm_gpio_get_value(&tcpci->gpio_cc_int))  in tcpci_poll_event()
510 	tcpci_read16(tcpci, TCPC_ALERT, &status);  in tcpci_poll_event()
517 		tcpci_write16(tcpci, TCPC_ALERT,  in tcpci_poll_event()
521 		tcpm_cc_change(tcpci->port);  in tcpci_poll_event()
526 		reg = dm_i2c_reg_read(tcpci->dev, TCPC_POWER_STATUS_MASK);  in tcpci_poll_event()
535 			tcpm_tcpc_reset(tcpci->port);  in tcpci_poll_event()
537 			tcpm_vbus_change(tcpci->port);  in tcpci_poll_event()
545 		cnt = dm_i2c_reg_read(tcpci->dev, TCPC_RX_BYTE_CNT);  in tcpci_poll_event()
550 		 * of the TCPCI spec [Rev 2.0 Ver 1.0 October 2017] and is  in tcpci_poll_event()
559 		tcpci_read16(tcpci, TCPC_RX_HDR, &header);  in tcpci_poll_event()
566 			tcpci_block_read(tcpci, TCPC_RX_DATA,  in tcpci_poll_event()
570 		tcpci_write16(tcpci, TCPC_ALERT, TCPC_ALERT_RX_STATUS);  in tcpci_poll_event()
572 		tcpm_pd_receive(tcpci->port, &msg);  in tcpci_poll_event()
576 		tcpm_pd_hard_reset(tcpci->port);  in tcpci_poll_event()
579 		tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_SUCCESS);  in tcpci_poll_event()
581 		tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_DISCARDED);  in tcpci_poll_event()
583 		tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED);  in tcpci_poll_event()
590 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);  in tcpci_enter_low_power_mode()  local
594 	ret = tcpci_write16(tcpci, TCPC_ALERT_MASK, 0);  in tcpci_enter_low_power_mode()
598 	reg = dm_i2c_reg_read(tcpci->dev, TCPC_BMCIO_CTRL);  in tcpci_enter_low_power_mode()
610 	return dm_i2c_reg_write(tcpci->dev, TCPC_BMCIO_CTRL, reg);  in tcpci_enter_low_power_mode()
613 static int tcpci_parse_config(struct tcpci *tcpci)  in tcpci_parse_config()  argument
615 	tcpci->controls_vbus = true; /* XXX */  in tcpci_parse_config()
617 	tcpci->tcpc.connector_node = dev_read_subnode(tcpci->dev, "connector");  in tcpci_parse_config()
618 	if (!ofnode_valid(tcpci->tcpc.connector_node)) {  in tcpci_parse_config()
626 struct tcpci *tcpci_register_port(struct udevice *dev, struct tcpci_data *data)  in tcpci_register_port()
628 	struct tcpci *tcpci;  in tcpci_register_port()  local
631 	tcpci = devm_kzalloc(dev, sizeof(*tcpci), GFP_KERNEL);  in tcpci_register_port()
632 	if (!tcpci)  in tcpci_register_port()
635 	err = gpio_request_by_name(dev, "int-n-gpios", 0, &tcpci->gpio_cc_int, GPIOD_IS_IN);  in tcpci_register_port()
638 		tcpci->gpio_cc_int_present = false;  in tcpci_register_port()
640 		tcpci->gpio_cc_int_present = true;  in tcpci_register_port()
643 	tcpci->dev = dev;  in tcpci_register_port()
644 	tcpci->data = data;  in tcpci_register_port()
646 	tcpci->tcpc.init = tcpci_init;  in tcpci_register_port()
647 	tcpci->tcpc.get_vbus = tcpci_get_vbus;  in tcpci_register_port()
648 	tcpci->tcpc.set_vbus = tcpci_set_vbus;  in tcpci_register_port()
649 	tcpci->tcpc.set_cc = tcpci_set_cc;  in tcpci_register_port()
650 	tcpci->tcpc.get_cc = tcpci_get_cc;  in tcpci_register_port()
651 	tcpci->tcpc.set_polarity = tcpci_set_polarity;  in tcpci_register_port()
652 	tcpci->tcpc.set_vconn = tcpci_set_vconn;  in tcpci_register_port()
653 	tcpci->tcpc.start_toggling = tcpci_start_toggling;  in tcpci_register_port()
655 	tcpci->tcpc.set_pd_rx = tcpci_set_pd_rx;  in tcpci_register_port()
656 	tcpci->tcpc.set_roles = tcpci_set_roles;  in tcpci_register_port()
657 	tcpci->tcpc.pd_transmit = tcpci_pd_transmit;  in tcpci_register_port()
658 	tcpci->tcpc.poll_event = tcpci_poll_event;  in tcpci_register_port()
659 	tcpci->tcpc.enter_low_power_mode = tcpci_enter_low_power_mode;  in tcpci_register_port()
661 	err = tcpci_parse_config(tcpci);  in tcpci_register_port()
665 	tcpci->port = tcpm_port_init(tcpci->dev, &tcpci->tcpc);  in tcpci_register_port()
666 	if (IS_ERR(tcpci->port)) {  in tcpci_register_port()
668 		return ERR_CAST(tcpci->port);  in tcpci_register_port()
671 	tcpm_poll_event(tcpci->port);  in tcpci_register_port()
673 	return tcpci;  in tcpci_register_port()
677 void tcpci_unregister_port(struct tcpci *tcpci)  in tcpci_unregister_port()  argument
679 	tcpm_uninit_port(tcpci->port);  in tcpci_unregister_port()
683 int tcpci_get_voltage_fun(struct tcpci *tcpci)  in tcpci_get_voltage_fun()  argument
685 	return tcpm_get_voltage(tcpci->port);  in tcpci_get_voltage_fun()
689 int tcpci_get_current_fun(struct tcpci *tcpci)  in tcpci_get_current_fun()  argument
691 	return tcpm_get_current(tcpci->port);  in tcpci_get_current_fun()
695 int tcpci_get_online_fun(struct tcpci *tcpci)  in tcpci_get_online_fun()  argument
697 	return tcpm_get_online(tcpci->port);  in tcpci_get_online_fun()
710 	err = tcpci_write16(chip->tcpci, TCPC_ALERT_MASK, val);  in tcpci_probe()
714 	chip->tcpci = tcpci_register_port(chip->udev, &chip->data);  in tcpci_probe()
715 	if (IS_ERR(chip->tcpci))  in tcpci_probe()
716 		return PTR_ERR(chip->tcpci);  in tcpci_probe()
727 	err = tcpci_write16(chip->tcpci, TCPC_ALERT_MASK, 0);  in tcpci_remove()
731 	tcpci_unregister_port(chip->tcpci);  in tcpci_remove()
740 	return tcpm_get_voltage(chip->tcpci->port);  in tcpci_get_voltage()
747 	return tcpm_get_current(chip->tcpci->port);  in tcpci_get_current()
754 	return tcpm_get_online(chip->tcpci->port);  in tcpci_get_online()
768 U_BOOT_DRIVER(tcpci) = {
769 	.name = "tcpci",