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/* Copyright (c) 2014 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.
*/
/* Plankton board configuration */
#include "adc.h"
#include "adc_chip.h"
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "i2c.h"
#include "ioexpander_pca9534.h"
#include "registers.h"
#include "system.h"
#include "task.h"
#include "timer.h"
#include "usb_pd.h"
#include "usb_pd_config.h"
#include "util.h"
/* Debounce time for voltage buttons */
#define BUTTON_DEBOUNCE_US (100 * MSEC)
static enum gpio_signal button_pressed;
enum usbc_action {
USBC_ACT_5V_TO_DUT,
USBC_ACT_12V_TO_DUT,
USBC_ACT_20V_TO_DUT,
USBC_ACT_DEVICE,
USBC_ACT_USBDP_TOGGLE,
USBC_ACT_USB_EN,
USBC_ACT_DP_EN,
USBC_ACT_CABLE_FLIP,
USBC_ACT_CABLE_POLARITY0,
USBC_ACT_CABLE_POLARITY1,
/* Number of USBC actions */
USBC_ACT_COUNT
};
enum board_src_cap src_cap_mapping[USBC_ACT_COUNT] =
{
[USBC_ACT_5V_TO_DUT] = SRC_CAP_5V,
[USBC_ACT_12V_TO_DUT] = SRC_CAP_12V,
[USBC_ACT_20V_TO_DUT] = SRC_CAP_20V,
};
static void set_usbc_action(enum usbc_action act)
{
int need_soft_reset;
switch (act) {
case USBC_ACT_5V_TO_DUT:
case USBC_ACT_12V_TO_DUT:
case USBC_ACT_20V_TO_DUT:
need_soft_reset = gpio_get_level(GPIO_VBUS_CHARGER_EN);
board_set_source_cap(src_cap_mapping[act]);
pd_set_dual_role(PD_DRP_FORCE_SOURCE);
if (need_soft_reset)
pd_soft_reset();
break;
case USBC_ACT_DEVICE:
pd_set_dual_role(PD_DRP_FORCE_SINK);
break;
case USBC_ACT_USBDP_TOGGLE:
gpio_set_level(GPIO_USBC_SS_USB_MODE,
!gpio_get_level(GPIO_USBC_SS_USB_MODE));
break;
case USBC_ACT_USB_EN:
gpio_set_level(GPIO_USBC_SS_USB_MODE, 1);
break;
case USBC_ACT_DP_EN:
gpio_set_level(GPIO_USBC_SS_USB_MODE, 0);
break;
case USBC_ACT_CABLE_FLIP:
pd_send_vdm(0, USB_VID_GOOGLE, VDO_CMD_FLIP, NULL, 0);
gpio_set_level(GPIO_USBC_POLARITY,
!gpio_get_level(GPIO_USBC_POLARITY));
break;
case USBC_ACT_CABLE_POLARITY0:
gpio_set_level(GPIO_USBC_POLARITY, 0);
break;
case USBC_ACT_CABLE_POLARITY1:
gpio_set_level(GPIO_USBC_POLARITY, 1);
break;
default:
break;
}
}
/* Handle debounced button press */
static void button_deferred(void)
{
/* bounce ? */
if (gpio_get_level(button_pressed) != 0)
return;
switch (button_pressed) {
case GPIO_DBG_5V_TO_DUT_L:
set_usbc_action(USBC_ACT_5V_TO_DUT);
break;
case GPIO_DBG_12V_TO_DUT_L:
set_usbc_action(USBC_ACT_12V_TO_DUT);
break;
case GPIO_DBG_20V_TO_DUT_L:
set_usbc_action(USBC_ACT_20V_TO_DUT);
break;
case GPIO_DBG_CHG_TO_DEV_L:
set_usbc_action(USBC_ACT_DEVICE);
break;
case GPIO_DBG_USB_TOGGLE_L:
set_usbc_action(USBC_ACT_USBDP_TOGGLE);
break;
case GPIO_DBG_CABLE_FLIP_L:
set_usbc_action(USBC_ACT_CABLE_FLIP);
break;
default:
break;
}
ccprintf("Button %d = %d\n",
button_pressed, gpio_get_level(button_pressed));
}
DECLARE_DEFERRED(button_deferred);
void button_event(enum gpio_signal signal)
{
button_pressed = signal;
/* reset debounce time */
hook_call_deferred(button_deferred, BUTTON_DEBOUNCE_US);
}
void vbus_event(enum gpio_signal signal)
{
ccprintf("VBUS! =%d\n", gpio_get_level(signal));
task_wake(TASK_ID_PD);
}
#include "gpio_list.h"
/* 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(0)},
[ADC_CH_CC2_PD] = {"CC2_PD", 3300, 4096, 0, STM32_AIN(4)},
};
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);
static void board_init(void)
{
/* Enable interrupts on VBUS transitions. */
gpio_enable_interrupt(GPIO_VBUS_WAKE);
/* Enable button interrupts. */
gpio_enable_interrupt(GPIO_DBG_5V_TO_DUT_L);
gpio_enable_interrupt(GPIO_DBG_12V_TO_DUT_L);
gpio_enable_interrupt(GPIO_DBG_20V_TO_DUT_L);
gpio_enable_interrupt(GPIO_DBG_CHG_TO_DEV_L);
gpio_enable_interrupt(GPIO_DBG_USB_TOGGLE_L);
gpio_enable_interrupt(GPIO_DBG_CABLE_FLIP_L);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
static int cmd_usbc_action(int argc, char *argv[])
{
enum usbc_action act;
if (argc != 2)
return EC_ERROR_PARAM_COUNT;
if (!strcasecmp(argv[1], "5v"))
act = USBC_ACT_5V_TO_DUT;
else if (!strcasecmp(argv[1], "12v"))
act = USBC_ACT_12V_TO_DUT;
else if (!strcasecmp(argv[1], "20v"))
act = USBC_ACT_20V_TO_DUT;
else if (!strcasecmp(argv[1], "dev"))
act = USBC_ACT_DEVICE;
else if (!strcasecmp(argv[1], "usb"))
act = USBC_ACT_USB_EN;
else if (!strcasecmp(argv[1], "dp"))
act = USBC_ACT_DP_EN;
else if (!strcasecmp(argv[1], "flip"))
act = USBC_ACT_CABLE_FLIP;
else if (!strcasecmp(argv[1], "pol0"))
act = USBC_ACT_CABLE_POLARITY0;
else if (!strcasecmp(argv[1], "pol1"))
act = USBC_ACT_CABLE_POLARITY1;
else
return EC_ERROR_PARAM1;
set_usbc_action(act);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(usbc_action, cmd_usbc_action,
"<5v|12v|20v|dev|usb|dp|flip|pol0|pol1>",
"Set Plankton type-C port state",
NULL);
static int board_usb_hub_reset(void)
{
int ret;
ret = pca9534_config_pin(I2C_PORT_MASTER, 0x40, 7, PCA9534_OUTPUT);
if (ret)
return ret;
ret = pca9534_set_level(I2C_PORT_MASTER, 0x40, 7, 0);
if (ret)
return ret;
usleep(100 * MSEC);
return pca9534_set_level(I2C_PORT_MASTER, 0x40, 7, 1);
}
static int cmd_usb_hub_reset(int argc, char *argv[])
{
return board_usb_hub_reset();
}
DECLARE_CONSOLE_COMMAND(hub_reset, cmd_usb_hub_reset,
NULL, "Reset USB hub", NULL);
static void board_usb_hub_reset_no_return(void)
{
board_usb_hub_reset();
}
DECLARE_DEFERRED(board_usb_hub_reset_no_return);
static void board_init_usb_hub(void)
{
if (system_get_reset_flags() & RESET_FLAG_POWER_ON)
hook_call_deferred(board_usb_hub_reset_no_return, 500 * MSEC);
}
DECLARE_HOOK(HOOK_INIT, board_init_usb_hub, HOOK_PRIO_DEFAULT);
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