diff options
Diffstat (limited to 'drivers/usb/pd/richtek/pd_policy_engine_drs.c')
| -rw-r--r-- | drivers/usb/pd/richtek/pd_policy_engine_drs.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/usb/pd/richtek/pd_policy_engine_drs.c b/drivers/usb/pd/richtek/pd_policy_engine_drs.c new file mode 100644 index 000000000000..be01eb3cf306 --- /dev/null +++ b/drivers/usb/pd/richtek/pd_policy_engine_drs.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2016 Richtek Technology Corp. + * + * Power Delivery Policy Engine for DRS + * + * Author: TH <tsunghan_tsai@richtek.com> + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/hisi/usb/pd/richtek/pd_core.h> +#include <linux/hisi/usb/pd/richtek/pd_dpm_core.h> +#include <linux/hisi/usb/pd/richtek/tcpci.h> +#include <linux/hisi/usb/pd/richtek/pd_policy_engine.h> + +/* + * [PD2.0] Figure 8-49: Type-C DFP to UFP Data Role Swap State Diagram + */ + +void pe_drs_dfp_ufp_evaluate_dr_swap_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_dpm_drs_evaluate_swap(pd_port, PD_ROLE_UFP); + pd_free_pd_event(pd_port, pd_event); +} + +void pe_drs_dfp_ufp_accept_dr_swap_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_ACCEPT); +} + +void pe_drs_dfp_ufp_change_to_ufp_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_dpm_drs_change_role(pd_port, PD_ROLE_UFP); + pd_free_pd_event(pd_port, pd_event); +} + +void pe_drs_dfp_ufp_send_dr_swap_entry(pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_DR_SWAP); +} + +void pe_drs_dfp_ufp_reject_dr_swap_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + if (pd_event->msg_sec == PD_DPM_NAK_REJECT) + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_REJECT); + else + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_WAIT); +} + +/* + * [PD2.0] Figure 8-50: Type-C UFP to DFP Data Role Swap State Diagram + */ + +void pe_drs_ufp_dfp_evaluate_dr_swap_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_dpm_drs_evaluate_swap(pd_port, PD_ROLE_DFP); + pd_free_pd_event(pd_port, pd_event); +} + +void pe_drs_ufp_dfp_accept_dr_swap_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_ACCEPT); +} + +void pe_drs_ufp_dfp_change_to_dfp_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_dpm_drs_change_role(pd_port, PD_ROLE_DFP); + pd_free_pd_event(pd_port, pd_event); +} + +void pe_drs_ufp_dfp_send_dr_swap_entry(pd_port_t *pd_port, pd_event_t *pd_event) +{ + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_DR_SWAP); +} + +void pe_drs_ufp_dfp_reject_dr_swap_entry( + pd_port_t *pd_port, pd_event_t *pd_event) +{ + if (pd_event->msg_sec == PD_DPM_NAK_REJECT) + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_REJECT); + else + pd_send_ctrl_msg(pd_port, TCPC_TX_SOP, PD_CTRL_WAIT); +} |