DragonEgg: Add support for Type C port 0, charging, and battery

BRANCH=none
BUG=b:111281797
TEST=make buildall

Change-Id: I2f4342f2c9ddfb4a6b2debbf94c1b0589227b58c
Signed-off-by: Scott Collyer <scollyer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1135928
Commit-Ready: Jett Rink <jettrink@chromium.org>
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>

6 files changed, 102 insertions, 0 deletions

diff --git a/board/dragonegg/battery.c b/board/dragonegg/battery.c
new file mode 100644
index 0000000000..ae583a0d40
--- /dev/null
+++ b/board/dragonegg/battery.c
@@ -0,0 +1,65 @@
+/* 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.
+ *
+ * Battery pack vendor provided charging profile
+ */
+
+#include "battery_fuel_gauge.h"
+#include "common.h"
+#include "util.h"
+
+/*
+ * Battery info for all DragonEgg battery types. Note that the fields
+ * start_charging_min/max and charging_min/max are not used for the charger.
+ * The effective temperature limits are given by discharging_min/max_c.
+ *
+ * Fuel Gauge (FG) parameters which are used for determining if the battery
+ * is connected, the appropriate ship mode (battery cutoff) command, and the
+ * charge/discharge FETs status.
+ *
+ * Ship mode (battery cutoff) requires 2 writes to the appropriate smart battery
+ * register. For some batteries, the charge/discharge FET bits are set when
+ * charging/discharging is active, in other types, these bits set mean that
+ * charging/discharging is disabled. Therefore, in addition to the mask for
+ * these bits, a disconnect value must be specified. Note that for TI fuel
+ * gauge, the charge/discharge FET status is found in Operation Status (0x54),
+ * but a read of Manufacturer Access (0x00) will return the lower 16 bits of
+ * Operation status which contains the FET status bits.
+ *
+ * The assumption for battery types supported is that the charge/discharge FET
+ * status can be read with a sb_read() command and therefore, only the register
+ * address, mask, and disconnect value need to be provided.
+ */
+const struct board_batt_params board_battery_info[] = {
+	/* Panasonic AP1505L Battery Information */
+	[BATTERY_0RD] = {
+		.fuel_gauge = {
+			.manuf_name = "SMP-COS5940",
+			.ship_mode = {
+				.reg_addr = 0x0,
+				.reg_data = { 0x10, 0x10 },
+			},
+			.fet = {
+				.reg_addr = 0x0,
+				.reg_mask = 0x2000,
+				.disconnect_val = 0x2000,
+			}
+		},
+		.batt_info = {
+			.voltage_max		= 8800,
+			.voltage_normal		= 7700, /* mV */
+			.voltage_min		= 6000, /* mV */
+			.precharge_current	= 256,	/* mA */
+			.start_charging_min_c	= 0,
+			.start_charging_max_c	= 60,
+			.charging_min_c		= 0,
+			.charging_max_c		= 60,
+			.discharging_min_c	= 0,
+			.discharging_max_c	= 60,
+		},
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
+
+const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_0RD;
diff --git a/board/dragonegg/board.c b/board/dragonegg/board.c
index 32d8c5da61..aa95e30478 100644
--- a/board/dragonegg/board.c
+++ b/board/dragonegg/board.c
@@ -6,8 +6,11 @@
 /* DragonEgg board-specific configuration */
 
 #include "common.h"
+#include "console.h"
+#include "driver/ppc/sn5s330.h"
 #include "extpower.h"
 #include "gpio.h"
+#include "hooks.h"
 #include "intc.h"
 #include "lid_switch.h"
 #include "power.h"
@@ -18,6 +21,12 @@
 #include "uart.h"
 #include "util.h"
 
+static void ppc_interrupt(enum gpio_signal signal)
+{
+	if (signal == GPIO_USB_C0_TCPPC_INT_L)
+		sn5s330_interrupt(0);
+}
+
 #include "gpio_list.h" /* Must come after other header files. */
 
 /******************************************************************************/
@@ -26,3 +35,12 @@
 const struct spi_device_t spi_devices[] = {
 };
 const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);
+
+void board_overcurrent_event(int port)
+{
+	if (port == 0) {
+		/* TODO(b/111281797): When does this get set high again? */
+		gpio_set_level(GPIO_USB_OC_ODL, 0);
+		cprints(CC_USBPD, "p%d: overcurrent!", port);
+	}
+}
diff --git a/board/dragonegg/board.h b/board/dragonegg/board.h
index e5cc9b8ee0..9db2239b46 100644
--- a/board/dragonegg/board.h
+++ b/board/dragonegg/board.h
@@ -50,6 +50,15 @@ enum pwm_channel {
 	PWM_CH_COUNT
 };
 
+/* List of possible batteries */
+enum battery_type {
+	BATTERY_0RD,
+	BATTERY_TYPE_COUNT,
+};
+
+int board_get_battery_soc(void);
+void board_pd_vconn_ctrl(int port, int cc_pin, int enabled);
+
 #endif /* !__ASSEMBLER__ */
 
 #endif /* __CROS_EC_BOARD_H */
diff --git a/board/dragonegg/build.mk b/board/dragonegg/build.mk
index 19b1ee2086..09726d3c63 100644
--- a/board/dragonegg/build.mk
+++ b/board/dragonegg/build.mk
@@ -12,3 +12,4 @@ CHIP_VARIANT:=it8320dx
 BASEBOARD:=dragonegg
 
 board-y=board.o
+board-$(CONFIG_BATTERY_SMART)+=battery.o
diff --git a/board/dragonegg/ec.tasklist b/board/dragonegg/ec.tasklist
index 2ab483bd73..b6092a60a2 100644
--- a/board/dragonegg/ec.tasklist
+++ b/board/dragonegg/ec.tasklist
@@ -22,9 +22,12 @@
 
 #define CONFIG_TASK_LIST \
 	TASK_ALWAYS(HOOKS, hook_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(CHARGER, charger_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_NOTEST(CHIPSET, chipset_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_NOTEST(KEYPROTO, keyboard_protocol_task, NULL, TASK_STACK_SIZE) \
+	TASK_NOTEST(PDCMD, pd_command_task, NULL, TASK_STACK_SIZE) \
 	TASK_ALWAYS(HOSTCMD, host_command_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(CONSOLE, console_task, NULL, VENTI_TASK_STACK_SIZE) \
 	TASK_ALWAYS(POWERBTN, power_button_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(PD_C0, pd_task, NULL, LARGER_TASK_STACK_SIZE)
 
diff --git a/board/dragonegg/gpio.inc b/board/dragonegg/gpio.inc
index 28da3bd87e..2af749e406 100644
--- a/board/dragonegg/gpio.inc
+++ b/board/dragonegg/gpio.inc
@@ -28,6 +28,9 @@ GPIO_INT(SLP_SUS_L,       PIN(G, 2), GPIO_INT_BOTH, power_signal_interrupt)
 GPIO_INT(PG_EC_RSMRST_ODL,PIN(E, 1), GPIO_INT_BOTH, power_signal_interrupt)
 GPIO_INT(PG_EC_DSW_PWROK, PIN(D, 6), GPIO_INT_BOTH, power_signal_interrupt)
 
+/* USB-C interrupts */
+GPIO_INT(USB_C0_TCPPC_INT_L, PIN(B, 2), GPIO_INT_FALLING, ppc_interrupt)
+
 /* Misc. interrupts */
 /* TODO (b:110880394) Uncomment this when support for buttons is added */
 /* GPIO_INT(VOL_DOWN_ODL,    PIN(I, 6), GPIO_INT_BOTH | GPIO_PULL_UP, button_interrupt) */
@@ -58,6 +61,9 @@ GPIO(EC_PCH_RSMRST_L,     PIN(H, 0), GPIO_OUT_HIGH)
 GPIO(EC_PROCHOT_ODL,      PIN(D, 0), GPIO_ODR_HIGH)
 GPIO(PP5000_PG_OD,        PIN(F, 0), GPIO_INPUT)
 
+/* USB and USBC Signals */
+GPIO(USB_OC_ODL,          PIN(J, 6), GPIO_ODR_HIGH)
+
 /* I2C pins - Alternate function below configures I2C module on these pins */
 GPIO(I2C0_SCL,            PIN(B, 3), GPIO_INPUT)     /* EC_PROG_SCL */
 GPIO(I2C0_SDA,            PIN(B, 4), GPIO_INPUT)     /* EC_PROG_SDA */