flapjack: Fork usb_pd_policy from kukuistabilize-11686.B

Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>

BUG=none
BRANCH=none
TEST=buildall

Change-Id: Ic0a2c43b49e96868ac3a2cd5ccc892a8f1cfdbcb
Reviewed-on: https://chromium-review.googlesource.com/1446631
Commit-Ready: Kaka Ni <nigang@huaqin.corp-partner.google.com>
Tested-by: Kaka Ni <nigang@huaqin.corp-partner.google.com>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Kaka Ni <nigang@huaqin.corp-partner.google.com>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>

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 */
+