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/* Copyright (c) 2012 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.
*/
/* Spring board-specific configuration */
#include "adc.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "dma.h"
#include "gpio.h"
#include "hooks.h"
#include "i2c.h"
#include "pmu_tpschrome.h"
#include "registers.h"
#include "stm32_adc.h"
#include "timer.h"
#include "util.h"
#define GPIO_KB_INPUT (GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH)
#define GPIO_KB_OUTPUT (GPIO_OUTPUT | GPIO_OPEN_DRAIN)
#define INT_BOTH_FLOATING (GPIO_INPUT | GPIO_INT_BOTH)
#define INT_BOTH_PULL_UP (GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH)
#define HARD_RESET_TIMEOUT_MS 5
/* GPIO interrupt handlers prototypes */
#ifndef CONFIG_TASK_GAIAPOWER
#define gaia_power_event NULL
#define gaia_suspend_event NULL
#define gaia_lid_event NULL
#else
void gaia_power_event(enum gpio_signal signal);
void gaia_suspend_event(enum gpio_signal signal);
void gaia_lid_event(enum gpio_signal signal);
#endif
#ifndef CONFIG_TASK_KEYSCAN
#define matrix_interrupt NULL
#endif
/* GPIO signal list. Must match order from enum gpio_signal. */
const struct gpio_info gpio_list[GPIO_COUNT] = {
/* Inputs with interrupt handlers are first for efficiency */
{"KB_PWR_ON_L", GPIO_B, (1<<5), GPIO_INT_BOTH, gaia_power_event},
{"PP1800_LDO2", GPIO_A, (1<<1), GPIO_INT_BOTH, gaia_power_event},
{"XPSHOLD", GPIO_A, (1<<3), GPIO_INT_BOTH, gaia_power_event},
{"CHARGER_INT", GPIO_C, (1<<4), GPIO_INT_FALLING, pmu_irq_handler},
{"LID_OPEN", GPIO_C, (1<<13), GPIO_INT_RISING, gaia_lid_event},
{"SUSPEND_L", GPIO_A, (1<<7), INT_BOTH_FLOATING, gaia_suspend_event},
{"WP_L", GPIO_A, (1<<13), GPIO_INPUT, NULL},
{"KB_IN00", GPIO_C, (1<<8), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN01", GPIO_C, (1<<9), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN02", GPIO_C, (1<<10), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN03", GPIO_C, (1<<11), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN04", GPIO_C, (1<<12), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN05", GPIO_C, (1<<14), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN06", GPIO_C, (1<<15), GPIO_KB_INPUT, matrix_interrupt},
{"KB_IN07", GPIO_D, (1<<2), GPIO_KB_INPUT, matrix_interrupt},
{"USB_CHG_INT", GPIO_A, (1<<6), GPIO_INT_FALLING, NULL},
/* Other inputs */
{"BCHGR_VACG", GPIO_A, (1<<0), GPIO_INT_BOTH, NULL},
/*
* I2C pins should be configured as inputs until I2C module is
* initialized. This will avoid driving the lines unintentionally.
*/
{"I2C1_SCL", GPIO_B, (1<<6), GPIO_INPUT, NULL},
{"I2C1_SDA", GPIO_B, (1<<7), GPIO_INPUT, NULL},
{"I2C2_SCL", GPIO_B, (1<<10), GPIO_INPUT, NULL},
{"I2C2_SDA", GPIO_B, (1<<11), GPIO_INPUT, NULL},
/* Outputs */
{"EN_PP1350", GPIO_A, (1<<14), GPIO_OUT_LOW, NULL},
{"EN_PP5000", GPIO_A, (1<<11), GPIO_OUT_LOW, NULL},
{"EN_PP3300", GPIO_A, (1<<8), GPIO_OUT_LOW, NULL},
{"PMIC_PWRON_L",GPIO_A, (1<<12), GPIO_OUT_HIGH, NULL},
{"PMIC_RESET", GPIO_A, (1<<15), GPIO_OUT_LOW, NULL},
{"ENTERING_RW", GPIO_D, (1<<0), GPIO_OUT_LOW, NULL},
{"CHARGER_EN", GPIO_B, (1<<2), GPIO_OUT_LOW, NULL},
{"EC_INT", GPIO_B, (1<<9), GPIO_HI_Z, NULL},
{"CODEC_INT", GPIO_D, (1<<1), GPIO_HI_Z, NULL},
{"KB_OUT00", GPIO_B, (1<<0), GPIO_KB_OUTPUT, NULL},
{"KB_OUT01", GPIO_B, (1<<8), GPIO_KB_OUTPUT, NULL},
{"KB_OUT02", GPIO_B, (1<<12), GPIO_KB_OUTPUT, NULL},
{"KB_OUT03", GPIO_B, (1<<13), GPIO_KB_OUTPUT, NULL},
{"KB_OUT04", GPIO_B, (1<<14), GPIO_KB_OUTPUT, NULL},
{"KB_OUT05", GPIO_B, (1<<15), GPIO_KB_OUTPUT, NULL},
{"KB_OUT06", GPIO_C, (1<<0), GPIO_KB_OUTPUT, NULL},
{"KB_OUT07", GPIO_C, (1<<1), GPIO_KB_OUTPUT, NULL},
{"KB_OUT08", GPIO_C, (1<<2), GPIO_KB_OUTPUT, NULL},
{"KB_OUT09", GPIO_B, (1<<1), GPIO_KB_OUTPUT, NULL},
{"KB_OUT10", GPIO_C, (1<<5), GPIO_KB_OUTPUT, NULL},
{"KB_OUT11", GPIO_C, (1<<6), GPIO_KB_OUTPUT, NULL},
{"KB_OUT12", GPIO_C, (1<<7), GPIO_KB_OUTPUT, NULL},
{"ILIM_1500", GPIO_B, (1<<3), GPIO_OUT_HIGH, NULL},
{"ILIM_500", GPIO_B, (1<<4), GPIO_OUT_LOW, NULL},
};
/* ADC channels */
const struct adc_t adc_channels[ADC_CH_COUNT] = {
/* Micro USB ID pin. Raw ADC value. */
[ADC_CH_USB_ID] = {"USB_ID", 1, 1, 0, STM32_AIN(5)},
/* Micro USB D+ sense pin. Raw ADC value. */
[ADC_CH_USB_DP_SNS] = {"USB_DP_SNS", 1, 1, 0, STM32_AIN(2)},
/* Micro USB D- sense pin. Raw ADC value. */
[ADC_CH_USB_DN_SNS] = {"USB_DN_SNS", 1, 1, 0, STM32_AIN(4)},
};
void configure_board(void)
{
uint32_t val;
dma_init();
/* Enable all GPIOs clocks
* TODO: more fine-grained enabling for power saving
*/
STM32_RCC_APB2ENR |= 0x1fd;
/* remap OSC_IN/OSC_OUT to PD0/PD1 */
STM32_GPIO_AFIO_MAPR |= 1 << 15;
/*
* use PA13, PA14, PA15, PB3, PB4 as a GPIO,
* so disable JTAG and SWD
*/
STM32_GPIO_AFIO_MAPR = (STM32_GPIO_AFIO_MAPR & ~(0x7 << 24))
| (4 << 24);
/*
* Set alternate function for USART1. For alt. function input
* the port is configured in either floating or pull-up/down
* input mode (ref. section 7.1.4 in datasheet RM0041):
* PA9: Tx, alt. function output
* PA10: Rx, input with pull-down
*
* note: see crosbug.com/p/12223 for more info
*/
val = STM32_GPIO_CRH_OFF(GPIO_A) & ~0x00000ff0;
val |= 0x00000890;
STM32_GPIO_CRH_OFF(GPIO_A) = val;
/* EC_INT is output, open-drain */
val = STM32_GPIO_CRH_OFF(GPIO_B) & ~0xf0;
val |= 0x50;
STM32_GPIO_CRH_OFF(GPIO_B) = val;
/* put GPIO in Hi-Z state */
gpio_set_level(GPIO_EC_INT, 1);
}
/* GPIO configuration to be done after I2C module init */
void board_i2c_post_init(int port)
{
uint32_t val;
/* enable alt. function (open-drain) */
if (port == STM32_I2C1_PORT) {
/* I2C1 is on PB6-7 */
val = STM32_GPIO_CRL_OFF(GPIO_B) & ~0xff000000;
val |= 0xdd000000;
STM32_GPIO_CRL_OFF(GPIO_B) = val;
} else if (port == STM32_I2C2_PORT) {
/* I2C2 is on PB10-11 */
val = STM32_GPIO_CRH_OFF(GPIO_B) & ~0x0000ff00;
val |= 0x0000dd00;
STM32_GPIO_CRH_OFF(GPIO_B) = val;
}
}
void board_interrupt_host(int active)
{
/* interrupt host by using active low EC_INT signal */
gpio_set_level(GPIO_EC_INT, !active);
}
void board_keyboard_suppress_noise(void)
{
/* notify audio codec of keypress for noise suppression */
gpio_set_level(GPIO_CODEC_INT, 0);
gpio_set_level(GPIO_CODEC_INT, 1);
}
static void board_startup_hook(void)
{
gpio_set_flags(GPIO_SUSPEND_L, INT_BOTH_PULL_UP);
#ifdef CONFIG_PMU_FORCE_FET
/* Enable lcd panel power */
pmu_enable_fet(FET_LCD_PANEL, 1, NULL);
/* Enable backlight power */
pmu_enable_fet(FET_BACKLIGHT, 1, NULL);
#endif /* CONFIG_PMU_FORCE_FET */
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_startup_hook, HOOK_PRIO_DEFAULT);
static void board_shutdown_hook(void)
{
#ifdef CONFIG_PMU_FORCE_FET
/* Power off backlight power */
pmu_enable_fet(FET_BACKLIGHT, 0, NULL);
/* Power off lcd panel */
pmu_enable_fet(FET_LCD_PANEL, 0, NULL);
#endif /* CONFIG_PMU_FORCE_FET */
/* Disable pull-up on SUSPEND_L during shutdown to prevent leakage */
gpio_set_flags(GPIO_SUSPEND_L, INT_BOTH_FLOATING);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_shutdown_hook, HOOK_PRIO_DEFAULT);
/*
* Force the pmic to reset completely. This forces an entire system reset,
* and therefore should never return
*/
void board_hard_reset(void)
{
/* Force a hard reset of tps Chrome */
gpio_set_level(GPIO_PMIC_RESET, 1);
/* Delay while the power is cut */
udelay(HARD_RESET_TIMEOUT_MS * 1000);
/* Shouldn't get here unless the board doesn't have this capability */
panic_puts("Hard reset failed! (this board may not be capable)\n");
}
#ifdef CONFIG_PMU_BOARD_INIT
/**
* Initialize PMU register settings
*
* PMU init settings depend on board configuration. This function should be
* called inside PMU init function.
*/
int board_pmu_init(void)
{
int failure = 0;
/* Set fast charging timeout to 6 hours*/
if (!failure)
failure = pmu_set_fastcharge(TIMEOUT_6HRS);
/* Enable external gpio CHARGER_EN control */
if (!failure)
failure = pmu_enable_ext_control(1);
/* Disable force charging */
if (!failure)
failure = pmu_enable_charger(0);
/* Set NOITERM bit */
if (!failure)
failure = pmu_low_current_charging(1);
/*
* High temperature charging
* termination voltage: 2.1V
* termination current: 100%
*/
if (!failure)
failure = pmu_set_term_voltage(RANGE_T34, TERM_V2100);
if (!failure)
failure = pmu_set_term_current(RANGE_T34, TERM_I1000);
/*
* Standard temperature charging
* termination voltage: 2.1V
* termination current: 100%
*/
if (!failure)
failure = pmu_set_term_voltage(RANGE_T23, TERM_V2100);
if (!failure)
failure = pmu_set_term_current(RANGE_T23, TERM_I1000);
return failure ? EC_ERROR_UNKNOWN : EC_SUCCESS;
}
#endif /* CONFIG_BOARD_PMU_INIT */
int board_get_ac(void)
{
/* use TPSChrome VACG signal to detect AC state */
return gpio_get_level(GPIO_BCHGR_VACG);
}
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