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OpenCellular/board/chell/board.c
Kyoung Kim 6e2d298249 Skylake: prevent EC from continuing execution after turning 3.3V_DSW off. 
Without this patch, EC continues to execute including board_pmic_init()
and its i2c transaction can be disturbed in the middle without proper
i2c stop and following new i2c transaction might fails.

BUG=none
BRANCH=master
TEST=none

Change-Id: Iaa39d3531faa5af24c1c4b445de014c9e263a021
Signed-off-by: Kyoung Kim <kyoung.il.kim@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/321342
Commit-Ready: Kyoung Il Kim <kyoung.il.kim@intel.com>
Tested-by: Kyoung Il Kim <kyoung.il.kim@intel.com>
Reviewed-by: Kevin K Wong <kevin.k.wong@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
2016-01-13 15:03:43 -08:00

413 lines
12 KiB
C
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/* 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.
*/
/* Chell board-specific configuration */
#include "adc_chip.h"
#include "bd99992gw.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "charger.h"
#include "chipset.h"
#include "console.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 "pi3usb9281.h"
#include "ps8740.h"
#include "power.h"
#include "power_button.h"
#include "pwm.h"
#include "pwm_chip.h"
#include "spi.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 GPIO_KB_OUTPUT_COL2 (GPIO_OUT_LOW)
#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);
}
#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 30V. */
[ADC_VBUS] = {"VBUS", 30000, 1024, 0, 1},
/* Adapter current output or battery discharging current */
[ADC_AMON_BMON] = {"AMON_BMON", 25000, 3072, 0, 3},
/* System current consumption */
[ADC_PSYS] = {"PSYS", 1, 1, 0, 4},
};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
const struct pwm_t pwm_channels[] = {
{2, PWM_CONFIG_ALT_CLOCK}, /* Use alternate 100kHz clock source */
};
BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
const struct i2c_port_t i2c_ports[] = {
{"pmic", MEC1322_I2C0_0, 400, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA},
{"muxes", MEC1322_I2C0_1, 400, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA},
{"pd_mcu", MEC1322_I2C1, 500, GPIO_I2C1_SCL, GPIO_I2C1_SDA},
{"batt", MEC1322_I2C3, 100, GPIO_I2C3_SCL, GPIO_I2C3_SDA},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_COUNT] = {
{I2C_PORT_TCPC, CONFIG_TCPC_I2C_BASE_ADDR},
{I2C_PORT_TCPC, CONFIG_TCPC_I2C_BASE_ADDR + 2},
};
/* SPI devices */
const struct spi_device_t spi_devices[] = {
{ CONFIG_SPI_FLASH_PORT, 0, GPIO_PVT_CS0},
};
const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);
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);
static int ps8740_tune_mux(const struct usb_mux *mux)
{
/* Apply same USB EQ settings to both Type-C mux */
ps8740_tune_usb_eq(mux->port_addr,
PS8740_USB_EQ_TX_6_5_DB,
PS8740_USB_EQ_RX_14_3_DB);
return EC_SUCCESS;
}
struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = {
{
.port_addr = 0x34,
.driver = &ps8740_usb_mux_driver,
.board_init = &ps8740_tune_mux,
},
{
.port_addr = 0x20,
.driver = &ps8740_usb_mux_driver,
.board_init = &ps8740_tune_mux,
}
};
/**
* 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);
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);
/* Provide AC status to the PCH */
gpio_set_level(GPIO_PCH_ACOK, extpower_is_present());
/* Proto board workarounds */
if (system_get_board_version() == 0) {
/* Disable interrupt for SLP_S0 */
gpio_set_flags(GPIO_PCH_SLP_S0_L,
GPIO_INPUT | GPIO_PULL_DOWN);
/* Add internal pullup on PLATFORM_EC_PROCHOT */
gpio_set_flags(GPIO_PLATFORM_EC_PROCHOT,
GPIO_INPUT | GPIO_PULL_UP);
}
}
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));
}
/* Called on AP S5 -> S3 transition */
static void board_chipset_startup(void)
{
gpio_set_level(GPIO_USB1_ENABLE, 1);
gpio_set_level(GPIO_ENABLE_TOUCHPAD, 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_USB1_ENABLE, 0);
gpio_set_level(GPIO_ENABLE_TOUCHPAD, 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_DMIC_EN, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
/* 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_DMIC_EN, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
uint32_t board_get_gpio_hibernate_state(uint32_t port, uint32_t pin)
{
int i;
const uint32_t out_low_gpios[][2] = {
/* Turn off LEDs in hibernate */
GPIO_TO_PORT_MASK_PAIR(GPIO_CHARGE_LED_1),
GPIO_TO_PORT_MASK_PAIR(GPIO_CHARGE_LED_2),
/*
* Set PD wake low so that it toggles high to generate a wake
* event once we leave hibernate.
*/
GPIO_TO_PORT_MASK_PAIR(GPIO_USB_PD_WAKE),
/* The GPIO to reset PMIC is active high */
GPIO_TO_PORT_MASK_PAIR(GPIO_PMIC_LDO_EN),
/* The GPIO to control RTCRST is active high. */
GPIO_TO_PORT_MASK_PAIR(GPIO_PCH_RTCRST),
/* Keep keyboard backlight off, GPIO34 pin is in PWM mode */
GPIO_TO_PORT_MASK_PAIR(GPIO_KEYBOARD_BACKLIGHT),
/* RSMRST to PCH should be low when rails are off */
GPIO_TO_PORT_MASK_PAIR(GPIO_PCH_RSMRST_L),
};
/* Some GPIOs should be driven low in hibernate */
for (i = 0; i < ARRAY_SIZE(out_low_gpios); ++i)
if (out_low_gpios[i][0] == port && out_low_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;
}
/* 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;
if (system_jumped_to_this_image())
return;
/* Interrogate current reset flags from previous reboot. */
flags = system_get_reset_flags();
if (!(flags & PMIC_RESET_FLAGS))
return;
/* Preserve AP off request. */
if (flags & RESET_FLAG_AP_OFF)
chip_save_reset_flags(RESET_FLAG_AP_OFF);
ccprintf("Restarting system with PMIC.\n");
/* Flush console */
cflush();
/* Bring down all rails but RTC rail (including EC power). */
gpio_set_level(GPIO_PMIC_LDO_EN, 1);
while (1)
; /* wait here */
}
DECLARE_HOOK(HOOK_INIT, board_handle_reboot, HOOK_PRIO_FIRST);
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