chgstv2: Unify power-on and shutdown battery thresholds

Currently, power-on battery SoC and shutdown battery SoC are
independently configured by each board. This patch will unify the
setting as follows:

  CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON = 2 (don't boot if soc < 2%)
  CONFIG_BATT_HOST_SHUTDOWN_PERCENTAGE = 2    (shutdown if soc <= 2%)
  BATTERY_LEVEL_SHUTDOWN = 3                  (shutdown if soc < 3%)
  CONFIG_BATTERY_EXPORT_DISPLAY_SOC = Y       (removed)
  CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON_WITH_AC = 1

This allows us to show the low battery alert whenever we can because
EC doesn't inhibit power-on even if it knows the host would
immediately shut down.

With CONFIG_BATTERY_EXPORT_DISPLAY_SOC, boards will start using the
CONFIG_BATT_HOST_SHUTDOWN_PERCENTAGE = 2% as the low battery
threshold (and the SoC will be agreed between the EC and Powerd).

Boards with CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON = 1 will keep the
same threshold. This is for avoiding degrading the UX by increasing
the power-on threshold (even though a question that 1% may not be
enough for soft sync to finish consistently remains to be answered).

Boards with CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON > 2 will have a
lower threshold but we think 2% is enough to finish the software sync.
A lower threshold also improves the UX by showing the low battery
alert in the situation where otherwise the system would leave the user
uninformed by not responding to a power button press.

BUG=b:191837893
BRANCH=None
TEST=buildall

Change-Id: If6ff733bc181f929561a3fffb8a84e760668ce37
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2981468
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3872712

1 files changed, 126 insertions, 0 deletions

diff --git a/board/homestar/board.h b/board/homestar/board.h
new file mode 100644
index 0000000000..1c3a114a71
--- /dev/null
+++ b/board/homestar/board.h
@@ -0,0 +1,126 @@
+/* Copyright 2021 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.
+ */
+
+/* Homestar board configuration */
+
+#ifndef __CROS_EC_BOARD_H
+#define __CROS_EC_BOARD_H
+
+#include "baseboard.h"
+
+/* On-body detection */
+#define CONFIG_BODY_DETECTION
+#define CONFIG_BODY_DETECTION_SENSOR           LID_ACCEL
+#define CONFIG_BODY_DETECTION_VAR_NOISE_FACTOR 150 /* % */
+#define CONFIG_GESTURE_DETECTION
+#define CONFIG_GESTURE_DETECTION_MASK BIT(CONFIG_BODY_DETECTION_SENSOR)
+#define CONFIG_GESTURE_HOST_DETECTION
+
+/* TODO(waihong): Remove the following bringup features */
+#define CONFIG_BRINGUP
+#define CONFIG_SYSTEM_UNLOCKED /* Allow dangerous commands. */
+#define CONFIG_USB_PD_DEBUG_LEVEL 3
+#define CONFIG_CMD_GPIO_EXTENDED
+#define CONFIG_CMD_POWERINDEBUG
+#define CONFIG_I2C_DEBUG
+#define CONFIG_DEVICE_EVENT
+
+#define CONFIG_BUTTON_TRIGGERED_RECOVERY
+
+/* Internal SPI flash on NPCX7 */
+#define CONFIG_FLASH_SIZE_BYTES (512 * 1024)  /* 512KB internal spi flash */
+
+/* Switchcap */
+#define CONFIG_LN9310
+
+/* Battery */
+#define CONFIG_BATTERY_DEVICE_CHEMISTRY  "LION"
+#define CONFIG_BATTERY_REVIVE_DISCONNECT
+#define CONFIG_BATTERY_FUEL_GAUGE
+#define CONFIG_BATTERY_VENDOR_PARAM
+
+/* Enable PD3.0 */
+#define CONFIG_USB_PD_REV30
+
+/* BC 1.2 Charger */
+#define CONFIG_BC12_DETECT_PI3USB9201
+
+/* USB */
+#define CONFIG_USB_PD_TCPM_MULTI_PS8XXX
+#define CONFIG_USB_PD_TCPM_PS8755
+#define CONFIG_USB_PD_TCPM_PS8805
+#define CONFIG_USBC_PPC_SN5S330
+#define CONFIG_USB_PD_PORT_MAX_COUNT 2
+
+/* BMI160 Lid accel/gyro */
+#define CONFIG_ACCELGYRO_BMI160
+#define CONFIG_ACCEL_INTERRUPTS
+#define CONFIG_ACCELGYRO_BMI160_INT_EVENT \
+	TASK_EVENT_MOTION_SENSOR_INTERRUPT(LID_ACCEL)
+#define OPT3001_I2C_ADDR_FLAGS OPT3001_I2C_ADDR1_FLAGS
+
+#define CONFIG_TABLET_MODE
+#define CONFIG_TABLET_MODE_SWITCH
+#define CONFIG_GMR_TABLET_MODE
+#define CONFIG_FRONT_PROXIMITY_SWITCH
+
+#define CONFIG_DETACHABLE_BASE
+#define CONFIG_BASE_ATTACHED_SWITCH
+
+/* GPIO alias */
+#define GPIO_AC_PRESENT GPIO_CHG_ACOK_OD
+#define GPIO_WP_L GPIO_EC_FLASH_WP_ODL
+#define GPIO_PMIC_RESIN_L GPIO_PM845_RESIN_L
+/* TODO(Dolan): check which pin was used for tablet mode detect */
+#define GMR_TABLET_MODE_GPIO_L GPIO_LID_OPEN_EC
+#define GPIO_SWITCHCAP_PG_INT_L GPIO_LN9310_INT
+
+#define CONFIG_MKBP_INPUT_DEVICES
+
+#ifndef __ASSEMBLER__
+
+#include "gpio_signal.h"
+#include "registers.h"
+
+enum adc_channel {
+	ADC_VBUS,
+	ADC_AMON_BMON,
+	ADC_PSYS,
+	ADC_BASE_DET,
+	ADC_CH_COUNT
+};
+
+/* Motion sensors */
+enum sensor_id {
+	LID_ACCEL = 0,
+	LID_GYRO,
+	SENSOR_COUNT,
+};
+
+enum pwm_channel {
+	PWM_CH_DISPLIGHT = 0,
+	PWM_CH_COUNT
+};
+
+/* List of possible batteries */
+enum battery_type {
+	BATTERY_GH02047XL_1C,
+	BATTERY_GH02047XL,
+	BATTERY_DS02032XL,
+	BATTERY_DS02032XL_1C,
+	BATTERY_L21D4PG0,
+	BATTERY_L21M4PG0,
+	BATTERY_TYPE_COUNT,
+};
+
+/* Reset all TCPCs. */
+void board_reset_pd_mcu(void);
+void board_set_tcpc_power_mode(int port, int mode);
+/* Base detection */
+void base_detect_interrupt(enum gpio_signal signal);
+
+#endif /* !defined(__ASSEMBLER__) */
+
+#endif /* __CROS_EC_BOARD_H */