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Diffstat (limited to 'board/wheatley/board.c')
| -rw-r--r-- | board/wheatley/board.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/board/wheatley/board.c b/board/wheatley/board.c new file mode 100644 index 0000000000..49a11049a3 --- /dev/null +++ b/board/wheatley/board.c @@ -0,0 +1,412 @@ +/* Copyright 2015 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. + */ + +/* Wheatley board-specific configuration */ + +#include "adc_chip.h" +#include "als.h" +#include "bd99992gw.h" +#include "button.h" +#include "charge_manager.h" +#include "charge_state.h" +#include "charger.h" +#include "chipset.h" +#include "console.h" +#include "driver/als_opt3001.h" +#include "extpower.h" +#include "gpio.h" +#include "hooks.h" +#include "host_command.h" +#include "i2c.h" +#include "keyboard_scan.h" +#include "lid_switch.h" +#include "motion_sense.h" +#include "pi3usb9281.h" +#include "power.h" +#include "power_button.h" +#include "switch.h" +#include "system.h" +#include "task.h" +#include "temp_sensor.h" +#include "timer.h" +#include "uart.h" +#include "usb_charge.h" +#include "usb_mux.h" +#include "usb_pd.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) + +#define GPIO_KB_INPUT (GPIO_INPUT | GPIO_PULL_UP) +#define GPIO_KB_OUTPUT (GPIO_ODR_HIGH) + +#define I2C_ADDR_BD99992 0x60 + +/* Exchange status with PD MCU. */ +static void pd_mcu_interrupt(enum gpio_signal signal) +{ +#ifdef HAS_TASK_PDCMD + /* Exchange status with PD MCU to determine interrupt cause */ + host_command_pd_send_status(0); +#endif +} + +void vbus0_evt(enum gpio_signal signal) +{ + /* VBUS present GPIO is inverted */ + usb_charger_vbus_change(0, !gpio_get_level(signal)); + task_wake(TASK_ID_PD_C0); +} + +void vbus1_evt(enum gpio_signal signal) +{ + /* VBUS present GPIO is inverted */ + usb_charger_vbus_change(1, !gpio_get_level(signal)); + task_wake(TASK_ID_PD_C1); +} + +void usb0_evt(enum gpio_signal signal) +{ + task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12, 0); +} + +void usb1_evt(enum gpio_signal signal) +{ + task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12, 0); +} + +/* + * enable_input_devices() is called by the tablet_mode ISR, but changes the + * state of GPIOs, so its definition must reside after including gpio_list. + */ +static void enable_input_devices(void); + +void tablet_mode_interrupt(enum gpio_signal signal) +{ + hook_call_deferred(enable_input_devices, 0); +} + +#include "gpio_list.h" + +/* power signal list. Must match order of enum power_signal. */ +const struct power_signal_info power_signal_list[] = { + {GPIO_RSMRST_L_PGOOD, 1, "RSMRST_N_PWRGD"}, + {GPIO_PCH_SLP_S0_L, 1, "SLP_S0_DEASSERTED"}, + {GPIO_PCH_SLP_S3_L, 1, "SLP_S3_DEASSERTED"}, + {GPIO_PCH_SLP_S4_L, 1, "SLP_S4_DEASSERTED"}, + {GPIO_PCH_SLP_SUS_L, 1, "SLP_SUS_DEASSERTED"}, + {GPIO_PMIC_DPWROK, 1, "PMIC_DPWROK"}, +}; +BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT); + +/* ADC channels */ +const struct adc_t adc_channels[] = { + /* Vbus sensing. Converted to mV, full ADC is equivalent to 33V. */ + [ADC_VBUS] = {"VBUS", NPCX_ADC_CH1, ADC_MAX_VOLT, ADC_READ_MAX+1, 0}, + /* Adapter current output or battery discharging current */ + [ADC_AMON_BMON] = {"AMON_BMON", NPCX_ADC_CH4, 1, 1, 0}, + /* System current consumption */ + [ADC_PSYS] = {"PSYS", NPCX_ADC_CH3, 1, 1, 0}, +}; +BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT); + +const struct i2c_port_t i2c_ports[] = { + {"pmic", NPCX_I2C_PORT0_0, 400, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA}, + {"muxes", NPCX_I2C_PORT0_1, 400, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA}, + {"pd_mcu", NPCX_I2C_PORT1, 1000, GPIO_I2C1_SCL, GPIO_I2C1_SDA}, + {"sensors", NPCX_I2C_PORT2, 400, GPIO_I2C2_SCL, GPIO_I2C2_SDA}, + {"batt", NPCX_I2C_PORT3, 100, GPIO_I2C3_SCL, GPIO_I2C3_SDA}, +}; +const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports); + +const enum gpio_signal hibernate_wake_pins[] = { + GPIO_AC_PRESENT, + GPIO_LID_OPEN, + GPIO_POWER_BUTTON_L, +}; + +const int hibernate_wake_pins_used = ARRAY_SIZE(hibernate_wake_pins); + +struct pi3usb9281_config pi3usb9281_chips[] = { + { + .i2c_port = I2C_PORT_USB_CHARGER_1, + .mux_lock = NULL, + }, + { + .i2c_port = I2C_PORT_USB_CHARGER_2, + .mux_lock = NULL, + }, +}; +BUILD_ASSERT(ARRAY_SIZE(pi3usb9281_chips) == + CONFIG_USB_SWITCH_PI3USB9281_CHIP_COUNT); + +struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = { + { + .port_addr = 0xa8, + .driver = &pi3usb30532_usb_mux_driver, + }, + { + .port_addr = 0x20, + .driver = &ps8740_usb_mux_driver, + } +}; + +/** + * Reset PD MCU + */ +void board_reset_pd_mcu(void) +{ + gpio_set_level(GPIO_PD_RST_L, 0); + usleep(100); + gpio_set_level(GPIO_PD_RST_L, 1); +} + +const struct temp_sensor_t temp_sensors[] = { + {"Battery", TEMP_SENSOR_TYPE_BATTERY, charge_temp_sensor_get_val, 0, 4}, + + /* These BD99992GW temp sensors are only readable in S0 */ + {"Ambient", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val, + BD99992GW_ADC_CHANNEL_SYSTHERM0, 4}, + {"Charger", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val, + BD99992GW_ADC_CHANNEL_SYSTHERM1, 4}, + {"DRAM", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val, + BD99992GW_ADC_CHANNEL_SYSTHERM2, 4}, + {"Wifi", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val, + BD99992GW_ADC_CHANNEL_SYSTHERM3, 4}, +}; +BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT); + +/* + * Thermal limits for each temp sensor. All temps are in degrees K. Must be in + * same order as enum temp_sensor_id. To always ignore any temp, use 0. + */ +struct ec_thermal_config thermal_params[] = { + /* {Twarn, Thigh, Thalt}, fan_off, fan_max */ + {{0, 0, 0}, 0, 0}, /* Battery */ + {{0, 0, 0}, 0, 0}, /* Ambient */ + {{0, 0, 0}, 0, 0}, /* Charger */ + {{0, 0, 0}, 0, 0}, /* DRAM */ + {{0, 0, 0}, 0, 0}, /* Wifi */ +}; +BUILD_ASSERT(ARRAY_SIZE(thermal_params) == TEMP_SENSOR_COUNT); + +/* ALS instances. Must be in same order as enum als_id. */ +struct als_t als[] = { + {"TI", opt3001_read_lux, 5}, +}; +BUILD_ASSERT(ARRAY_SIZE(als) == ALS_COUNT); + +const struct button_config buttons[CONFIG_BUTTON_COUNT] = { + { 0 }, + { 0 }, +}; + +static void board_pmic_init(void) +{ + /* No need to re-init PMIC since settings are sticky across sysjump */ + if (system_jumped_to_this_image()) + return; + + /* + * Set V085ACNT / V0.85A Control Register: + * Lower power mode = 0.7V. + * Nominal output = 1.0V. + */ + i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992, 0x38, 0x7a); +} +DECLARE_HOOK(HOOK_INIT, board_pmic_init, HOOK_PRIO_DEFAULT); + +/* Initialize board. */ +static void board_init(void) +{ + /* Enable PD MCU interrupt */ + gpio_enable_interrupt(GPIO_PD_MCU_INT); + /* Enable VBUS interrupt */ + gpio_enable_interrupt(GPIO_USB_C0_VBUS_WAKE_L); + gpio_enable_interrupt(GPIO_USB_C1_VBUS_WAKE_L); + + /* Enable pericom BC1.2 interrupts */ + gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_L); + gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_L); + + /* Enable tablet mode interrupt for input device enable */ + gpio_enable_interrupt(GPIO_TABLET_MODE_L); + + /* Provide AC status to the PCH */ + gpio_set_level(GPIO_PCH_ACOK, extpower_is_present()); +} +DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT); + +/** + * Buffer the AC present GPIO to the PCH. + */ +static void board_extpower(void) +{ + gpio_set_level(GPIO_PCH_ACOK, extpower_is_present()); +} +DECLARE_HOOK(HOOK_AC_CHANGE, board_extpower, HOOK_PRIO_DEFAULT); + +/** + * Set active charge port -- only one port can be active at a time. + * + * @param charge_port Charge port to enable. + * + * Returns EC_SUCCESS if charge port is accepted and made active, + * EC_ERROR_* otherwise. + */ +int board_set_active_charge_port(int charge_port) +{ + /* charge port is a realy physical port */ + int is_real_port = (charge_port >= 0 && + charge_port < CONFIG_USB_PD_PORT_COUNT); + /* check if we are source vbus on that port */ + int source = gpio_get_level(charge_port == 0 ? GPIO_USB_C0_5V_EN : + GPIO_USB_C1_5V_EN); + + if (is_real_port && source) { + CPRINTS("Skip enable p%d", charge_port); + return EC_ERROR_INVAL; + } + + CPRINTS("New chg p%d", charge_port); + + if (charge_port == CHARGE_PORT_NONE) { + /* Disable both ports */ + gpio_set_level(GPIO_USB_C0_CHARGE_EN_L, 1); + gpio_set_level(GPIO_USB_C1_CHARGE_EN_L, 1); + } else { + /* Make sure non-charging port is disabled */ + gpio_set_level(charge_port ? GPIO_USB_C0_CHARGE_EN_L : + GPIO_USB_C1_CHARGE_EN_L, 1); + /* Enable charging port */ + gpio_set_level(charge_port ? GPIO_USB_C1_CHARGE_EN_L : + GPIO_USB_C0_CHARGE_EN_L, 0); + } + + return EC_SUCCESS; +} + +/** + * Set the charge limit based upon desired maximum. + * + * @param charge_ma Desired charge limit (mA). + */ +void board_set_charge_limit(int charge_ma) +{ + charge_set_input_current_limit(MAX(charge_ma, + CONFIG_CHARGER_INPUT_CURRENT)); +} + +/* Enable or disable input devices, based upon chipset state and tablet mode */ +static void enable_input_devices(void) +{ + int kb_enable = 1; + int tp_enable = 1; + + /* Disable both TP and KB in tablet mode */ + if (!gpio_get_level(GPIO_TABLET_MODE_L)) + kb_enable = tp_enable = 0; + /* Disable TP if chipset is off */ + else if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) + tp_enable = 0; + + keyboard_scan_enable(kb_enable, KB_SCAN_DISABLE_LID_ANGLE); + gpio_set_level(GPIO_ENABLE_TOUCHPAD, tp_enable); +} +DECLARE_DEFERRED(enable_input_devices); + +/* Called on AP S5 -> S3 transition */ +static void board_chipset_startup(void) +{ + hook_call_deferred(enable_input_devices, 0); +} +DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT); + +/* Called on AP S3 -> S5 transition */ +static void board_chipset_shutdown(void) +{ + hook_call_deferred(enable_input_devices, 0); +} +DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT); + +/* Called on AP S3 -> S0 transition */ +static void board_chipset_resume(void) +{ + gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 1); + gpio_set_level(GPIO_PP1800_DX_SENSOR_EN, 1); + + /* + * Now that we have enabled the rail to the sensors, let's give enough + * time for the sensors to boot up. Without this delay, the very first + * i2c transactions always fail because the sensors aren't ready yet. + * In testing, a 2ms delay seemed to be reliable, but we'll delay for + * 3ms just to be safe. + * + * Additionally, this hook needs to be run before the motion sense hook + * tries to initialize the sensors. + */ + msleep(3); +} +DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, + MOTION_SENSE_HOOK_PRIO-1); + +/* Called on AP S0 -> S3 transition */ +static void board_chipset_suspend(void) +{ + gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 0); + gpio_set_level(GPIO_PP1800_DX_SENSOR_EN, 0); +} +DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT); + +/* Turn off LEDs in hibernate */ +uint32_t board_get_gpio_hibernate_state(uint32_t port, uint32_t pin) +{ + int i; + const uint32_t led_gpios[][2] = { + GPIO_TO_PORT_MASK_PAIR(GPIO_CHARGE_LED_1), + GPIO_TO_PORT_MASK_PAIR(GPIO_CHARGE_LED_2), + }; + + /* LED GPIOs should be driven low to turn off LEDs */ + for (i = 0; i < ARRAY_SIZE(led_gpios); ++i) + if (led_gpios[i][0] == port && led_gpios[i][1] == pin) + return GPIO_OUTPUT | GPIO_LOW; + + /* Other GPIOs should be put in a low-power state */ + return GPIO_INPUT | GPIO_PULL_UP; +} + +/* Any wheatley boards post version 2 should have ROP_LDO_EN stuffed. */ +#define BOARD_MIN_ID_LOD_EN 2 +/* Make the pmic re-sequence the power rails under these conditions. */ +#define PMIC_RESET_FLAGS \ + (RESET_FLAG_WATCHDOG | RESET_FLAG_SOFT | RESET_FLAG_HARD) +static void board_handle_reboot(void) +{ + int flags; + const struct gpio_info *g = &gpio_list[GPIO_BATLOW_L_PMIC_LDO_EN]; + + if (system_jumped_to_this_image()) + return; + + if (system_get_board_version() < BOARD_MIN_ID_LOD_EN) + return; + + /* Interrogate current reset flags from previous reboot. */ + flags = system_get_reset_flags(); + + if (!(flags & PMIC_RESET_FLAGS)) + return; + + ccprintf("Restarting system with PMIC.\n"); + /* Flush console */ + cflush(); + + /* Bring down all rails but RTC rail (including EC power). */ + gpio_set_flags_by_mask(g->port, g->mask, GPIO_OUT_HIGH); +} +DECLARE_HOOK(HOOK_INIT, board_handle_reboot, HOOK_PRIO_FIRST); |