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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.
*/
/* Honeybuns board configuration */
#include "adc.h"
#include "adc_chip.h"
#include "common.h"
#include "console.h"
#include "ec_version.h"
#include "gpio.h"
#include "hooks.h"
#include "i2c.h"
#include "registers.h"
#include "task.h"
#include "timer.h"
#include "usb.h"
#include "usb_pd.h"
#include "util.h"
void vbus_event(enum gpio_signal signal)
{
ccprintf("VBUS!\n");
}
#include "gpio_list.h"
static void honeybuns_test_led_update(void)
{
static int toggle_count;
toggle_count++;
gpio_set_level(GPIO_TP6, toggle_count&1);
}
DECLARE_HOOK(HOOK_TICK, honeybuns_test_led_update, HOOK_PRIO_DEFAULT);
/* Initialize board. */
void board_config_pre_init(void)
{
/* enable SYSCFG clock */
STM32_RCC_APB2ENR |= 1 << 0;
/*
* the DMA mapping is :
* Chan 2 : TIM1_CH1 (C0 RX)
* Chan 3 : SPI1_TX (C0 TX)
* Chan 4 : USART1_TX
* Chan 5 : USART1_RX
* Chan 6 :
* Chan 7 :
*/
/* Remap USART DMA to match the USART driver */
STM32_SYSCFG_CFGR1 |= (1 << 9) | (1 << 10);
}
/* ADC channels */
const struct adc_t adc_channels[] = {
/* USB PD CC lines sensing. Converted to mV (3300mV/4096). */
[ADC_CH_CC1_PD] = {"CC1_PD", 3300, 4096, 0, STM32_AIN(1)},
/* VBUS sense via 100k/8.8k voltage divder 3.3V -> 40.8V */
[ADC_CH_VIN_DIV_P] = {"VIN_DIV_P", 40800, 4096, 0, STM32_AIN(5)},
[ADC_CH_VIN_DIV_N] = {"VIN_DIV_N", 40800, 4096, 0, STM32_AIN(6)},
};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
/* I2C ports */
const struct i2c_port_t i2c_ports[] = {
{"master", I2C_PORT_MASTER, 100,
GPIO_MASTER_I2C_SCL, GPIO_MASTER_I2C_SDA},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
const void * const usb_strings[] = {
[USB_STR_DESC] = usb_string_desc,
[USB_STR_VENDOR] = USB_STRING_DESC("Google Inc."),
[USB_STR_PRODUCT] = USB_STRING_DESC("Honeybuns"),
[USB_STR_VERSION] = USB_STRING_DESC(CROS_EC_VERSION32),
[USB_STR_BB_URL] = USB_STRING_DESC(USB_GOOGLE_TYPEC_URL),
};
BUILD_ASSERT(ARRAY_SIZE(usb_strings) == USB_STR_COUNT);
void board_set_usb_mux(int port, enum typec_mux mux, int polarity)
{
if (mux == TYPEC_MUX_NONE) {
/* put the mux in the high impedance state */
gpio_set_level(GPIO_SS_MUX_OE_L, 1);
return;
}
if ((mux == TYPEC_MUX_DOCK) || (mux == TYPEC_MUX_USB)) {
/* Low selects USB Dock */
gpio_set_level(GPIO_SS_MUX_SEL, 0);
} else if (mux == TYPEC_MUX_DP) {
/* high selects display port */
gpio_set_level(GPIO_SS_MUX_SEL, 1);
}
/* clear OE line to make mux active */
gpio_set_level(GPIO_SS_MUX_OE_L, 0);
}
int board_get_usb_mux(int port, const char **dp_str, const char **usb_str)
{
int oe_disabled = gpio_get_level(GPIO_SS_MUX_OE_L);
int dp_4lanes = gpio_get_level(GPIO_SS_MUX_SEL);
if (oe_disabled) {
*usb_str = NULL;
*dp_str = NULL;
return 0;
}
if (dp_4lanes) {
*dp_str = "DP_4LANE";
*usb_str = NULL;
} else {
*dp_str = "DP_2LANE";
*usb_str = "DOCK";
}
return 1;
}
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