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-rw-r--r--[l---------]board/flapjack/usb_pd_policy.c409
1 files changed, 408 insertions, 1 deletions
diff --git a/board/flapjack/usb_pd_policy.c b/board/flapjack/usb_pd_policy.c
index bcb9116de7..42b0ce7e03 120000..100644
--- a/board/flapjack/usb_pd_policy.c
+++ b/board/flapjack/usb_pd_policy.c
@@ -1 +1,408 @@
-../kukui/usb_pd_policy.c \ No newline at end of file
+/* 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 "atomic.h"
+#include "charger.h"
+#include "charge_manager.h"
+#include "common.h"
+#include "console.h"
+#include "driver/charger/rt946x.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "host_command.h"
+#include "registers.h"
+#include "system.h"
+#include "task.h"
+#include "timer.h"
+#include "util.h"
+#include "usb_mux.h"
+#include "usb_pd.h"
+#include "usb_pd_tcpm.h"
+
+#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
+#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
+
+#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
+ PDO_FIXED_COMM_CAP)
+
+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_snk_pdo[] = {
+ PDO_FIXED(5000, 500, PDO_FIXED_FLAGS),
+ PDO_BATT(4750,
+ (int)(PD_MAX_VOLTAGE_MV * 1.05),
+ PD_OPERATING_POWER_MW),
+ PDO_VAR(4750,
+ (int)(PD_MAX_VOLTAGE_MV * 1.05),
+ PD_MAX_CURRENT_MA),
+};
+const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo);
+
+int pd_is_valid_input_voltage(int mv)
+{
+ return 1;
+}
+
+void pd_transition_voltage(int idx)
+{
+ /* No-operation: we are always 5V */
+}
+
+static uint8_t vbus_en;
+
+int board_vbus_source_enabled(int port)
+{
+ return vbus_en;
+}
+
+int pd_set_power_supply_ready(int port)
+{
+
+ pd_set_vbus_discharge(port, 0);
+ /* Provide VBUS */
+ vbus_en = 1;
+ charger_enable_otg_power(1);
+
+ /* notify host of power info change */
+ pd_send_host_event(PD_EVENT_POWER_CHANGE);
+
+ return EC_SUCCESS; /* we are ready */
+}
+
+void pd_power_supply_reset(int port)
+{
+ int prev_en;
+
+ prev_en = vbus_en;
+ /* Disable VBUS */
+ vbus_en = 0;
+ charger_enable_otg_power(0);
+ /* Enable discharge if we were previously sourcing 5V */
+ if (prev_en)
+ pd_set_vbus_discharge(port, 1);
+
+ /* notify host of power info change */
+ pd_send_host_event(PD_EVENT_POWER_CHANGE);
+}
+
+void typec_set_source_current_limit(int port, int rp)
+{
+ /* No-operation */
+}
+
+int pd_board_checks(void)
+{
+ return EC_SUCCESS;
+}
+
+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;
+}
+
+int pd_check_data_swap(int port, int data_role)
+{
+ /* Allow data swap if we are a UFP, otherwise don't allow */
+ return (data_role == PD_ROLE_UFP) ? 1 : 0;
+}
+
+int pd_check_vconn_swap(int port)
+{
+ /*
+ * VCONN is provided directly by the battery (PPVAR_SYS)
+ * but use the same rules as power swap.
+ */
+ return pd_get_dual_role(port) == PD_DRP_TOGGLE_ON ? 1 : 0;
+}
+
+void pd_execute_data_swap(int port, int data_role)
+{
+ /* Do nothing */
+}
+
+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);
+ }
+}
+
+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)
+ pd_request_data_swap(port);
+}
+/* ----------------- 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;
+
+ /* 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]);
+
+ 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_COUNT];
+/* DP Status VDM as returned by UFP */
+static uint32_t dp_status[CONFIG_USB_PD_PORT_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;
+};
+
+/*
+ * timestamp of the next possible toggle to ensure the 2-ms spacing
+ * between IRQ_HPD.
+ */
+static uint64_t hpd_deadline[CONFIG_USB_PD_PORT_COUNT];
+
+static void svdm_dp_post_config(int port)
+{
+ const struct usb_mux * const mux = &usb_muxes[port];
+
+ dp_flags[port] |= DP_FLAGS_DP_ON;
+ if (!(dp_flags[port] & DP_FLAGS_HPD_HI_PENDING))
+ return;
+
+ gpio_set_level(GPIO_USB_C0_HPD_OD, 1);
+ gpio_set_level(GPIO_USB_C0_DP_OE_L, 0);
+ gpio_set_level(GPIO_USB_C0_DP_POLARITY, pd_get_polarity(port));
+
+ /* set the minimum time delay (2ms) for the next HPD IRQ */
+ hpd_deadline[port] = get_time().val + HPD_USTREAM_DEBOUNCE_LVL;
+ mux->hpd_update(port, 1, 0);
+}
+
+static int svdm_dp_attention(int port, uint32_t *payload)
+{
+ int cur_lvl = gpio_get_level(GPIO_USB_C0_HPD_OD);
+ int lvl = PD_VDO_DPSTS_HPD_LVL(payload[1]);
+ int irq = PD_VDO_DPSTS_HPD_IRQ(payload[1]);
+ const struct usb_mux * const mux = &usb_muxes[port];
+
+ dp_status[port] = payload[1];
+
+ /* Its initial DP status message prior to config */
+ if (!(dp_flags[port] & DP_FLAGS_DP_ON)) {
+ if (lvl)
+ dp_flags[port] |= DP_FLAGS_HPD_HI_PENDING;
+ return 1;
+ }
+
+ if (irq & cur_lvl) {
+ uint64_t now = get_time().val;
+ /* wait for the minimum spacing between IRQ_HPD if needed */
+ if (now < hpd_deadline[port])
+ usleep(hpd_deadline[port] - now);
+
+ /* generate IRQ_HPD pulse */
+ gpio_set_level(GPIO_USB_C0_HPD_OD, 0);
+ usleep(HPD_DSTREAM_DEBOUNCE_IRQ);
+ gpio_set_level(GPIO_USB_C0_HPD_OD, 1);
+
+ gpio_set_level(GPIO_USB_C0_DP_OE_L, 0);
+ gpio_set_level(GPIO_USB_C0_DP_POLARITY, pd_get_polarity(port));
+
+ /* set the minimum time delay (2ms) for the next HPD IRQ */
+ hpd_deadline[port] = get_time().val + HPD_USTREAM_DEBOUNCE_LVL;
+ } else if (irq & !cur_lvl) {
+ CPRINTF("ERR:HPD:IRQ&LOW\n");
+ return 0; /* nak */
+ } else {
+ gpio_set_level(GPIO_USB_C0_HPD_OD, lvl);
+ gpio_set_level(GPIO_USB_C0_DP_OE_L, !lvl);
+ gpio_set_level(GPIO_USB_C0_DP_POLARITY, pd_get_polarity(port));
+ /* set the minimum time delay (2ms) for the next HPD IRQ */
+ hpd_deadline[port] = get_time().val + HPD_USTREAM_DEBOUNCE_LVL;
+ }
+
+ mux->hpd_update(port, lvl, irq);
+ /* ack */
+ return 1;
+}
+
+static void svdm_exit_dp_mode(int port)
+{
+ const struct usb_mux * const mux = &usb_muxes[port];
+
+ svdm_safe_dp_mode(port);
+ gpio_set_level(GPIO_USB_C0_HPD_OD, 0);
+ gpio_set_level(GPIO_USB_C0_DP_OE_L, 1);
+ 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 */
+