1 files changed, 312 insertions, 0 deletions
diff --git a/board/burnet/board.c b/board/burnet/board.c
new file mode 100644
index 0000000000..7a8b2989ae
--- /dev/null
+++ b/board/burnet/board.c
@@ -0,0 +1,312 @@
+/* Copyright 2020 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 "adc.h"
+#include "adc_chip.h"
+#include "backlight.h"
+#include "button.h"
+#include "charge_manager.h"
+#include "charge_ramp.h"
+#include "charge_state.h"
+#include "charger.h"
+#include "chipset.h"
+#include "common.h"
+#include "console.h"
+#include "driver/accelgyro_bmi_common.h"
+#include "driver/battery/max17055.h"
+#include "driver/bc12/pi3usb9201.h"
+#include "driver/charger/isl923x.h"
+#include "driver/sync.h"
+#include "driver/tcpm/fusb302.h"
+#include "driver/usb_mux/it5205.h"
+#include "ec_commands.h"
+#include "extpower.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "host_command.h"
+#include "i2c.h"
+#include "i2c_bitbang.h"
+#include "it8801.h"
+#include "keyboard_scan.h"
+#include "lid_switch.h"
+#include "power.h"
+#include "power_button.h"
+#include "registers.h"
+#include "spi.h"
+#include "system.h"
+#include "tablet_mode.h"
+#include "task.h"
+#include "tcpm.h"
+#include "timer.h"
+#include "usb_charge.h"
+#include "usb_mux.h"
+#include "usb_pd_tcpm.h"
+#include "util.h"
+
+#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
+#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
+
+static void tcpc_alert_event(enum gpio_signal signal)
+{
+	schedule_deferred_pd_interrupt(0 /* port */);
+}
+
+#include "gpio_list.h"
+
+/******************************************************************************/
+/* ADC channels. Must be in the exactly same order as in enum adc_channel. */
+const struct adc_t adc_channels[] = {
+	[ADC_BOARD_ID] =  {"BOARD_ID",  3300, 4096, 0, STM32_AIN(10)},
+	[ADC_EC_SKU_ID] = {"EC_SKU_ID", 3300, 4096, 0, STM32_AIN(8)},
+	[ADC_BATT_ID] =   {"BATT_ID",   3300, 4096, 0, STM32_AIN(7)},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/******************************************************************************/
+/* I2C ports */
+const struct i2c_port_t i2c_ports[] = {
+	{"typec", 0, 400, GPIO_I2C1_SCL, GPIO_I2C1_SDA},
+	{"other", 1, 100, GPIO_I2C2_SCL, GPIO_I2C2_SDA},
+};
+const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
+
+const struct i2c_port_t i2c_bitbang_ports[] = {
+	{"battery", 2, 100, GPIO_I2C3_SCL, GPIO_I2C3_SDA, .drv = &bitbang_drv},
+};
+const unsigned int i2c_bitbang_ports_used = ARRAY_SIZE(i2c_bitbang_ports);
+
+#define BC12_I2C_ADDR PI3USB9201_I2C_ADDR_3
+
+/* power signal list.  Must match order of enum power_signal. */
+const struct power_signal_info power_signal_list[] = {
+	{GPIO_AP_IN_SLEEP_L,   POWER_SIGNAL_ACTIVE_LOW,  "AP_IN_S3_L"},
+	{GPIO_PMIC_EC_RESETB,  POWER_SIGNAL_ACTIVE_HIGH, "PMIC_PWR_GOOD"},
+};
+BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT);
+
+/* Keyboard scan setting */
+struct keyboard_scan_config keyscan_config = {
+	/*
+	 * TODO(b/133200075): Tune this once we have the final performance
+	 * out of the driver and the i2c bus.
+	 */
+	.output_settle_us = 35,
+	.debounce_down_us = 5 * MSEC,
+	.debounce_up_us = 40 * MSEC,
+	.scan_period_us = 10 * MSEC,
+	.min_post_scan_delay_us = 10 * MSEC,
+	.poll_timeout_us = 100 * MSEC,
+	.actual_key_mask = {
+		0x14, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xff,
+		0xa4, 0xff, 0xfe, 0x55, 0xfa, 0xca  /* full set */
+	},
+};
+
+struct ioexpander_config_t ioex_config[CONFIG_IO_EXPANDER_PORT_COUNT] = {
+	[0] = {
+		.i2c_host_port = I2C_PORT_IO_EXPANDER_IT8801,
+		.i2c_slave_addr = IT8801_I2C_ADDR,
+		.drv = &it8801_ioexpander_drv,
+	},
+};
+
+/******************************************************************************/
+/* SPI devices */
+/* TODO: to be added once sensors land via CL:1714436 */
+const struct spi_device_t spi_devices[] = {
+};
+const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);
+
+const struct pi3usb9201_config_t pi3usb9201_bc12_chips[] = {
+	{
+		.i2c_port = I2C_PORT_BC12,
+		.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
+	},
+};
+
+/******************************************************************************/
+const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
+	{
+		.bus_type = EC_BUS_TYPE_I2C,
+		.i2c_info = {
+			.port = I2C_PORT_TCPC0,
+			.addr_flags = FUSB302_I2C_SLAVE_ADDR_FLAGS,
+		},
+		.drv = &fusb302_tcpm_drv,
+	},
+};
+
+static void board_hpd_status(const struct usb_mux *me,
+			     int hpd_lvl, int hpd_irq)
+{
+	/*
+	 * svdm_dp_attention() did most of the work, we only need to notify
+	 * host here.
+	 */
+	host_set_single_event(EC_HOST_EVENT_USB_MUX);
+}
+
+const struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = {
+	{
+		.usb_port = 0,
+		.i2c_port = I2C_PORT_USB_MUX,
+		.i2c_addr_flags = IT5205_I2C_ADDR1_FLAGS,
+		.driver = &it5205_usb_mux_driver,
+		.hpd_update = &board_hpd_status,
+	},
+};
+
+uint16_t tcpc_get_alert_status(void)
+{
+	uint16_t status = 0;
+
+	if (!gpio_get_level(GPIO_USB_C0_PD_INT_ODL))
+		status |= PD_STATUS_TCPC_ALERT_0;
+
+	return status;
+}
+
+static int force_discharge;
+
+int board_set_active_charge_port(int charge_port)
+{
+	CPRINTS("New chg p%d", charge_port);
+
+	/* ignore all request when discharge mode is on */
+	if (force_discharge && charge_port != CHARGE_PORT_NONE)
+		return EC_SUCCESS;
+
+	switch (charge_port) {
+	case CHARGE_PORT_USB_C:
+		/* Don't charge from a source port */
+		if (board_vbus_source_enabled(charge_port))
+			return -1;
+		break;
+	case CHARGE_PORT_NONE:
+		/*
+		 * To ensure the fuel gauge (max17055) is always powered
+		 * even when battery is disconnected, keep VBAT rail on but
+		 * set the charging current to minimum.
+		 */
+		charger_set_current(CHARGER_SOLO, 0);
+		break;
+	default:
+		panic("Invalid charge port\n");
+		break;
+	}
+
+	return EC_SUCCESS;
+}
+
+void board_set_charge_limit(int port, int supplier, int charge_ma,
+			    int max_ma, int charge_mv)
+{
+	charge_ma = (charge_ma * 95) / 100;
+	charge_set_input_current_limit(MAX(charge_ma,
+			       CONFIG_CHARGER_INPUT_CURRENT), charge_mv);
+}
+
+int board_discharge_on_ac(int enable)
+{
+	int ret, port;
+
+	if (enable) {
+		port = CHARGE_PORT_NONE;
+	} else {
+		/* restore the charge port state */
+		port = charge_manager_get_override();
+		if (port == OVERRIDE_OFF)
+			port = charge_manager_get_active_charge_port();
+	}
+
+	ret = charger_discharge_on_ac(enable);
+	if (ret)
+		return ret;
+	force_discharge = enable;
+
+	return board_set_active_charge_port(port);
+}
+
+int pd_snk_is_vbus_provided(int port)
+{
+	/* TODO(b:138352732): read IT8801 GPIO EN_USBC_CHARGE_L */
+	return EC_ERROR_UNIMPLEMENTED;
+}
+
+void bc12_interrupt(enum gpio_signal signal)
+{
+	task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12, 0);
+}
+
+static void board_init(void)
+{
+	/* If the reset cause is external, pulse PMIC force reset. */
+	if (system_get_reset_flags() == EC_RESET_FLAG_RESET_PIN) {
+		gpio_set_level(GPIO_PMIC_FORCE_RESET_ODL, 0);
+		msleep(100);
+		gpio_set_level(GPIO_PMIC_FORCE_RESET_ODL, 1);
+	}
+
+	/* Enable TCPC alert interrupts */
+	gpio_enable_interrupt(GPIO_USB_C0_PD_INT_ODL);
+
+#ifdef SECTION_IS_RW
+	/* Enable interrupts from BMI160 sensor. */
+	gpio_enable_interrupt(GPIO_ACCEL_INT_ODL);
+#endif /* SECTION_IS_RW */
+
+	/* Enable interrupt from PMIC. */
+	gpio_enable_interrupt(GPIO_PMIC_EC_RESETB);
+
+	/* Enable BC12 interrupt */
+	gpio_enable_interrupt(GPIO_BC12_EC_INT_ODL);
+}
+DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
+
+/* Motion sensors */
+/* Mutexes */
+#ifdef SECTION_IS_RW
+/* TODO: to be added once sensors land via CL:1714436 */
+struct motion_sensor_t motion_sensors[] = {
+};
+const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
+
+#endif /* SECTION_IS_RW */
+
+/* Called on AP S5 -> S3 transition */
+static void board_chipset_startup(void)
+{
+	gpio_set_level(GPIO_EN_USBA_5V, 1);
+}
+DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
+
+/* Called on AP S3 -> S5 transition */
+static void board_chipset_shutdown(void)
+{
+	gpio_set_level(GPIO_EN_USBA_5V, 0);
+}
+DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);
+
+int battery_get_vendor_param(uint32_t param, uint32_t *value)
+{
+	int rv;
+	uint8_t data[16] = {};
+
+	/* only allow reading 0x70~0x7F, 16 byte data */
+	if (param < 0x70 || param >= 0x80)
+		return EC_ERROR_ACCESS_DENIED;
+
+	rv = sb_read_string(0x70, data, sizeof(data));
+	if (rv)
+		return rv;
+
+	*value = data[param - 0x70];
+	return EC_SUCCESS;
+}
+
+int battery_set_vendor_param(uint32_t param, uint32_t value)
+{
+	return EC_ERROR_UNIMPLEMENTED;
+}