diff options
Diffstat (limited to 'board/cheza/usb_pd_policy.c')
-rw-r--r-- | board/cheza/usb_pd_policy.c | 473 |
1 files changed, 0 insertions, 473 deletions
diff --git a/board/cheza/usb_pd_policy.c b/board/cheza/usb_pd_policy.c deleted file mode 100644 index 061c6bb5df..0000000000 --- a/board/cheza/usb_pd_policy.c +++ /dev/null @@ -1,473 +0,0 @@ -/* Copyright 2018 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "charge_manager.h" -#include "console.h" -#include "gpio.h" -#include "pi3usb9281.h" -#include "system.h" -#include "usb_mux.h" -#include "usbc_ppc.h" -#include "util.h" - -#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args) - -#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\ - PDO_FIXED_COMM_CAP) - -/* TODO(waihong): Fill in correct source and sink capabilities */ -const uint32_t pd_src_pdo[] = { - PDO_FIXED(5000, 1500, PDO_FIXED_FLAGS), -}; -const int pd_src_pdo_cnt = ARRAY_SIZE(pd_src_pdo); -const uint32_t pd_src_pdo_max[] = { - PDO_FIXED(5000, 3000, PDO_FIXED_FLAGS), -}; -const int pd_src_pdo_max_cnt = ARRAY_SIZE(pd_src_pdo_max); - -const uint32_t pd_snk_pdo[] = { - PDO_FIXED(5000, 500, PDO_FIXED_FLAGS), - PDO_BATT(4750, 21000, 15000), - PDO_VAR(4750, 21000, 3000), -}; -const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo); - -int pd_board_checks(void) -{ - return EC_SUCCESS; -} - -int pd_check_data_swap(int port, int data_role) -{ - /* Always allow data swap */ - return 1; -} - -void pd_check_dr_role(int port, int dr_role, int flags) -{ - /* If UFP, try to switch to DFP */ - if ((flags & PD_FLAGS_PARTNER_DR_DATA) && - dr_role == PD_ROLE_UFP && - system_get_image_copy() != SYSTEM_IMAGE_RO) - pd_request_data_swap(port); -} - -int pd_check_power_swap(int port) -{ - /* - * Allow power swap as long as we are acting as a dual role device, - * otherwise assume our role is fixed (not in S0 or console command - * to fix our role). - */ - return pd_get_dual_role(port) == PD_DRP_TOGGLE_ON ? 1 : 0; -} - -void pd_check_pr_role(int port, int pr_role, int flags) -{ - /* - * If partner is dual-role power and dualrole toggling is on, consider - * if a power swap is necessary. - */ - if ((flags & PD_FLAGS_PARTNER_DR_POWER) && - pd_get_dual_role(port) == PD_DRP_TOGGLE_ON) { - /* - * If we are a sink and partner is not externally powered, then - * swap to become a source. If we are source and partner is - * externally powered, swap to become a sink. - */ - int partner_extpower = flags & PD_FLAGS_PARTNER_EXTPOWER; - - if ((!partner_extpower && pr_role == PD_ROLE_SINK) || - (partner_extpower && pr_role == PD_ROLE_SOURCE)) - pd_request_power_swap(port); - } -} - -int pd_check_vconn_swap(int port) -{ - /* TODO(waihong): Check any case we do not allow. */ - return 1; -} - -void pd_execute_data_swap(int port, int data_role) -{ - int enable = (data_role == PD_ROLE_UFP); - int type; - - /* - * Exclude the PD charger, in which the "USB Communications Capable" - * bit is unset in the Fixed Supply PDO. - */ - if (pd_capable(port)) - enable = enable && pd_get_partner_usb_comm_capable(port); - - /* - * The hub behind the BC1.2 chip may advertise a BC1.2 type. So - * disconnect the switch when getting the charger type to ensure - * the detected type is from external. - */ - usb_charger_set_switches(port, USB_SWITCH_DISCONNECT); - type = pi3usb9281_get_device_type(port); - usb_charger_set_switches(port, USB_SWITCH_RESTORE); - - /* Exclude the BC1.2 charger, which is not detected as CDP or SDP. */ - enable = enable && (type & (PI3USB9281_TYPE_CDP | PI3USB9281_TYPE_SDP)); - - /* Only mux one port to AP. If already muxed, return. */ - if (enable && (!gpio_get_level(GPIO_USB_C0_HS_MUX_SEL) || - gpio_get_level(GPIO_USB_C1_HS_MUX_SEL))) - return; - - /* Port-0 and port-1 have different polarities. */ - if (port == 0) - gpio_set_level(GPIO_USB_C0_HS_MUX_SEL, enable ? 0 : 1); - else if (port == 1) - gpio_set_level(GPIO_USB_C1_HS_MUX_SEL, enable ? 1 : 0); -} - -int pd_is_valid_input_voltage(int mv) -{ - return 1; -} - -static uint8_t vbus_en[CONFIG_USB_PD_PORT_MAX_COUNT]; -static uint8_t vbus_rp[CONFIG_USB_PD_PORT_MAX_COUNT] = {TYPEC_RP_1A5, - TYPEC_RP_1A5}; - -static void board_vbus_update_source_current(int port) -{ - if (port == 0) { - /* - * Port 0 is controlled by a USB-C PPC SN5S330. - */ - ppc_set_vbus_source_current_limit(port, vbus_rp[port]); - ppc_vbus_source_enable(port, vbus_en[port]); - } else if (port == 1) { - /* - * Port 1 is controlled by a USB-C current-limited power - * switch, NX5P3290. Change the GPIO driving the load switch. - * - * 1.5 vs 3.0 A limit is controlled by a dedicated gpio. - * If the GPIO is asserted, it shorts a n-MOSFET to put a - * 16.5k resistance (2x 33k in parallel) on the NX5P3290 load - * switch ILIM pin, setting a minimum OCP current of 3100 mA. - * If the GPIO is deasserted, the n-MOSFET is open that makes - * a single 33k resistor on ILIM, setting a minimum OCP - * current of 1505 mA. - */ - gpio_set_level(GPIO_EN_USB_C1_3A, - vbus_rp[port] == TYPEC_RP_3A0 ? 1 : 0); - gpio_set_level(GPIO_EN_USB_C1_5V_OUT, vbus_en[port]); - } -} - -void pd_power_supply_reset(int port) -{ - int prev_en; - - prev_en = vbus_en[port]; - - /* Disable VBUS */ - vbus_en[port] = 0; - board_vbus_update_source_current(port); - - /* Enable discharge if we were previously sourcing 5V */ - if (prev_en) - pd_set_vbus_discharge(port, 1); - -#ifdef CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT - /* Give back the current quota we are no longer using */ - charge_manager_source_port(port, 0); -#endif /* defined(CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT) */ - - /* notify host of power info change */ - pd_send_host_event(PD_EVENT_POWER_CHANGE); -} - -int pd_set_power_supply_ready(int port) -{ - /* Disable charging */ - board_vbus_sink_enable(port, 0); - - pd_set_vbus_discharge(port, 0); - - /* Provide VBUS */ - vbus_en[port] = 1; - board_vbus_update_source_current(port); - - /* Ensure we advertise the proper available current quota */ - charge_manager_source_port(port, 1); - - /* notify host of power info change */ - pd_send_host_event(PD_EVENT_POWER_CHANGE); - - return EC_SUCCESS; /* we are ready */ -} - -void pd_transition_voltage(int idx) -{ - /* No-operation: we are always 5V */ -} - -int board_vbus_source_enabled(int port) -{ - return vbus_en[port]; -} - -void typec_set_source_current_limit(int port, enum tcpc_rp_value rp) -{ - vbus_rp[port] = rp; - board_vbus_update_source_current(port); -} - -int pd_snk_is_vbus_provided(int port) -{ - return !gpio_get_level(port ? GPIO_USB_C1_VBUS_DET_L : - GPIO_USB_C0_VBUS_DET_L); -} - -/* ----------------- Vendor Defined Messages ------------------ */ -const struct svdm_response svdm_rsp = { - .identity = NULL, - .svids = NULL, - .modes = NULL, -}; - -int pd_custom_vdm(int port, int cnt, uint32_t *payload, - uint32_t **rpayload) -{ - int cmd = PD_VDO_CMD(payload[0]); - uint16_t dev_id = 0; - int is_rw, is_latest; - - /* make sure we have some payload */ - if (cnt == 0) - return 0; - - switch (cmd) { - case VDO_CMD_VERSION: - /* guarantee last byte of payload is null character */ - *(payload + cnt - 1) = 0; - CPRINTF("version: %s\n", (char *)(payload+1)); - break; - case VDO_CMD_READ_INFO: - case VDO_CMD_SEND_INFO: - /* copy hash */ - if (cnt == 7) { - dev_id = VDO_INFO_HW_DEV_ID(payload[6]); - is_rw = VDO_INFO_IS_RW(payload[6]); - - is_latest = pd_dev_store_rw_hash(port, - dev_id, - payload + 1, - is_rw ? - SYSTEM_IMAGE_RW : - SYSTEM_IMAGE_RO); - /* - * Send update host event unless our RW hash is - * already known to be the latest update RW. - */ - if (!is_rw || !is_latest) - pd_send_host_event(PD_EVENT_UPDATE_DEVICE); - - CPRINTF("DevId:%d.%d SW:%d RW:%d\n", - HW_DEV_ID_MAJ(dev_id), - HW_DEV_ID_MIN(dev_id), - VDO_INFO_SW_DBG_VER(payload[6]), - is_rw); - } else if (cnt == 6) { - /* really old devices don't have last byte */ - pd_dev_store_rw_hash(port, dev_id, payload + 1, - SYSTEM_IMAGE_UNKNOWN); - } - break; - case VDO_CMD_CURRENT: - CPRINTF("Current: %dmA\n", payload[1]); - break; - case VDO_CMD_FLIP: - usb_mux_flip(port); - break; -#ifdef CONFIG_USB_PD_LOGGING - case VDO_CMD_GET_LOG: - pd_log_recv_vdm(port, cnt, payload); - break; -#endif /* CONFIG_USB_PD_LOGGING */ - } - - return 0; -} - -#ifdef CONFIG_USB_PD_ALT_MODE_DFP -static int dp_flags[CONFIG_USB_PD_PORT_MAX_COUNT]; -static uint32_t dp_status[CONFIG_USB_PD_PORT_MAX_COUNT]; - -static void svdm_safe_dp_mode(int port) -{ - /* make DP interface safe until configure */ - dp_flags[port] = 0; - dp_status[port] = 0; - usb_mux_set(port, TYPEC_MUX_NONE, - USB_SWITCH_CONNECT, pd_get_polarity(port)); -} - -static int svdm_enter_dp_mode(int port, uint32_t mode_caps) -{ - /* Only enter mode if device is DFP_D capable */ - if (mode_caps & MODE_DP_SNK) { - svdm_safe_dp_mode(port); - return 0; - } - - return -1; -} - -static int svdm_dp_status(int port, uint32_t *payload) -{ - int opos = pd_alt_mode(port, USB_SID_DISPLAYPORT); - - payload[0] = VDO(USB_SID_DISPLAYPORT, 1, - CMD_DP_STATUS | VDO_OPOS(opos)); - payload[1] = VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */ - 0, /* HPD level ... not applicable */ - 0, /* exit DP? ... no */ - 0, /* usb mode? ... no */ - 0, /* multi-function ... no */ - (!!(dp_flags[port] & DP_FLAGS_DP_ON)), - 0, /* power low? ... no */ - (!!(dp_flags[port] & DP_FLAGS_DP_ON))); - return 2; -}; - -static int svdm_dp_config(int port, uint32_t *payload) -{ - int opos = pd_alt_mode(port, USB_SID_DISPLAYPORT); - int pin_mode = pd_dfp_dp_get_pin_mode(port, dp_status[port]); - - if (!pin_mode) - return 0; - - payload[0] = VDO(USB_SID_DISPLAYPORT, 1, - CMD_DP_CONFIG | VDO_OPOS(opos)); - payload[1] = VDO_DP_CFG(pin_mode, /* pin mode */ - 1, /* DPv1.3 signaling */ - 2); /* UFP connected */ - return 2; -}; - -static void svdm_dp_post_config(int port) -{ - dp_flags[port] |= DP_FLAGS_DP_ON; -} - -/** - * Is the port fine to be muxed its DisplayPort lines? - * - * Only one port can be muxed to DisplayPort at a time. - * - * @param port Port number of TCPC. - * @return 1 is fine; 0 is bad as other port is already muxed; - */ -static int is_dp_muxable(int port) -{ - int i; - - for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) - if (i != port) { - if (usb_mux_get(i) & USB_PD_MUX_DP_ENABLED) - return 0; - } - - return 1; -} - -static int svdm_dp_attention(int port, uint32_t *payload) -{ - int lvl = PD_VDO_DPSTS_HPD_LVL(payload[1]); - int irq = PD_VDO_DPSTS_HPD_IRQ(payload[1]); - int mf_pref = PD_VDO_DPSTS_MF_PREF(payload[1]); - const struct usb_mux *mux = &usb_muxes[port]; - - dp_status[port] = payload[1]; - - mux->hpd_update(port, lvl, irq); - - if (lvl && is_dp_muxable(port)) { - /* - * The GPIO USBC_MUX_CONF1 enables the mux of the DP redriver - * for the port 1. - */ - gpio_set_level(GPIO_USBC_MUX_CONF1, port == 1); - - usb_mux_set(port, mf_pref ? TYPEC_MUX_DOCK : TYPEC_MUX_DP, - USB_SWITCH_CONNECT, pd_get_polarity(port)); - } else { - usb_mux_set(port, mf_pref ? TYPEC_MUX_USB : TYPEC_MUX_NONE, - USB_SWITCH_CONNECT, pd_get_polarity(port)); - } - - /* ack */ - return 1; -} - -static void svdm_exit_dp_mode(int port) -{ - const struct usb_mux *mux = &usb_muxes[port]; - - svdm_safe_dp_mode(port); - mux->hpd_update(port, 0, 0); -} - -static int svdm_enter_gfu_mode(int port, uint32_t mode_caps) -{ - /* Always enter GFU mode */ - return 0; -} - -static void svdm_exit_gfu_mode(int port) -{ -} - -static int svdm_gfu_status(int port, uint32_t *payload) -{ - /* - * This is called after enter mode is successful, send unstructured - * VDM to read info. - */ - pd_send_vdm(port, USB_VID_GOOGLE, VDO_CMD_READ_INFO, NULL, 0); - return 0; -} - -static int svdm_gfu_config(int port, uint32_t *payload) -{ - return 0; -} - -static int svdm_gfu_attention(int port, uint32_t *payload) -{ - return 0; -} - -const struct svdm_amode_fx supported_modes[] = { - { - .svid = USB_SID_DISPLAYPORT, - .enter = &svdm_enter_dp_mode, - .status = &svdm_dp_status, - .config = &svdm_dp_config, - .post_config = &svdm_dp_post_config, - .attention = &svdm_dp_attention, - .exit = &svdm_exit_dp_mode, - }, - { - .svid = USB_VID_GOOGLE, - .enter = &svdm_enter_gfu_mode, - .status = &svdm_gfu_status, - .config = &svdm_gfu_config, - .attention = &svdm_gfu_attention, - .exit = &svdm_exit_gfu_mode, - } -}; -const int supported_modes_cnt = ARRAY_SIZE(supported_modes); -#endif /* CONFIG_USB_PD_ALT_MODE_DFP */ |