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/* Copyright 2018 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.
*/
/* Common code for VARIANT_OCTOPUS_USBC_STANDALONE_TCPCS configuration */
#include "charge_state.h"
#include "common.h"
#include "console.h"
#include "driver/ppc/nx20p348x.h"
#include "driver/tcpm/anx7447.h"
#include "driver/tcpm/ps8xxx.h"
#include "driver/tcpm/tcpci.h"
#include "driver/tcpm/tcpm.h"
#include "gpio.h"
#include "hooks.h"
#include "system.h"
#include "tcpm/tcpci.h"
#include "usb_mux.h"
#include "usbc_ppc.h"
#include "util.h"
#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
/******************************************************************************/
/* USB-C TPCP Configuration */
const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
[USB_PD_PORT_TCPC_0] = {
#if defined(VARIANT_OCTOPUS_TCPC_0_PS8751)
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC0,
.addr_flags = PS8751_I2C_ADDR1_FLAGS,
},
.drv = &ps8xxx_tcpm_drv,
#else
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC0,
.addr_flags = AN7447_TCPC0_I2C_ADDR_FLAGS,
},
.drv = &anx7447_tcpm_drv,
#endif
},
[USB_PD_PORT_TCPC_1] = {
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC1,
.addr_flags = PS8751_I2C_ADDR1_FLAGS,
},
.drv = &ps8xxx_tcpm_drv,
},
};
/******************************************************************************/
/* USB-C MUX Configuration */
#if defined(VARIANT_OCTOPUS_TCPC_0_PS8751)
static int ps8751_tune_mux(const struct usb_mux *me)
{
/* Tune USB mux registers for casta's port 0 Rx measurement */
mux_write(me, PS8XXX_REG_MUX_USB_C2SS_EQ, 0x40);
return EC_SUCCESS;
}
#endif
const struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = {
[USB_PD_PORT_TCPC_0] = {
.usb_port = USB_PD_PORT_TCPC_0,
#if defined(VARIANT_OCTOPUS_TCPC_0_PS8751)
.driver = &tcpci_tcpm_usb_mux_driver,
.hpd_update = &ps8xxx_tcpc_update_hpd_status,
.board_init = &ps8751_tune_mux,
#else
.driver = &anx7447_usb_mux_driver,
.hpd_update = &anx7447_tcpc_update_hpd_status,
#endif
},
[USB_PD_PORT_TCPC_1] = {
.usb_port = USB_PD_PORT_TCPC_1,
.driver = &tcpci_tcpm_usb_mux_driver,
.hpd_update = &ps8xxx_tcpc_update_hpd_status,
}
};
/******************************************************************************/
/* USB-C PPC Configuration */
struct ppc_config_t ppc_chips[CONFIG_USB_PD_PORT_MAX_COUNT] = {
[USB_PD_PORT_TCPC_0] = {
.i2c_port = I2C_PORT_TCPC0,
.i2c_addr_flags = NX20P3483_ADDR2_FLAGS,
.drv = &nx20p348x_drv,
},
[USB_PD_PORT_TCPC_1] = {
.i2c_port = I2C_PORT_TCPC1,
.i2c_addr_flags = NX20P3483_ADDR2_FLAGS,
.drv = &nx20p348x_drv,
},
};
unsigned int ppc_cnt = ARRAY_SIZE(ppc_chips);
/******************************************************************************/
/* Power Delivery and charing functions */
void tcpc_alert_event(enum gpio_signal signal)
{
int port = -1;
switch (signal) {
case GPIO_USB_C0_MUX_INT_ODL:
port = 0;
break;
case GPIO_USB_C1_MUX_INT_ODL:
port = 1;
break;
default:
return;
}
schedule_deferred_pd_interrupt(port);
}
void variant_tcpc_init(void)
{
/* Enable PPC interrupts. */
gpio_enable_interrupt(GPIO_USB_PD_C0_INT_ODL);
gpio_enable_interrupt(GPIO_USB_PD_C1_INT_ODL);
/* Enable TCPC interrupts. */
gpio_enable_interrupt(GPIO_USB_C0_MUX_INT_ODL);
gpio_enable_interrupt(GPIO_USB_C1_MUX_INT_ODL);
}
/* Called after the baseboard_tcpc_init (via +3) */
DECLARE_HOOK(HOOK_INIT, variant_tcpc_init, HOOK_PRIO_INIT_I2C + 3);
uint16_t tcpc_get_alert_status(void)
{
uint16_t status = 0;
if (!gpio_get_level(GPIO_USB_C0_MUX_INT_ODL)) {
#if defined(VARIANT_OCTOPUS_TCPC_0_PS8751)
if (gpio_get_level(GPIO_USB_C0_PD_RST_ODL))
#else
if (!gpio_is_implemented(GPIO_USB_C0_PD_RST) ||
!gpio_get_level(GPIO_USB_C0_PD_RST))
#endif
status |= PD_STATUS_TCPC_ALERT_0;
}
if (!gpio_get_level(GPIO_USB_C1_MUX_INT_ODL)) {
if (gpio_get_level(GPIO_USB_C1_PD_RST_ODL))
status |= PD_STATUS_TCPC_ALERT_1;
}
return status;
}
/**
* Reset all system PD/TCPC MCUs -- currently only called from
* handle_pending_reboot() in common/power.c just before hard
* resetting the system. This logic is likely not needed as the
* PP3300_A rail should be dropped on EC reset.
*/
void board_reset_pd_mcu(void)
{
#if defined(VARIANT_OCTOPUS_TCPC_0_PS8751)
/*
* C0: Assert reset to TCPC0 (PS8751) for required delay if we have a
* battery
*/
if (battery_is_present() == BP_YES) {
/*
* TODO(crbug:846412): After refactor, ensure that battery has
* enough charge to last the reboot as well
*/
gpio_set_level(GPIO_USB_C0_PD_RST_ODL, 0);
msleep(PS8XXX_RESET_DELAY_MS);
gpio_set_level(GPIO_USB_C0_PD_RST_ODL, 1);
}
#else
/*
* C0: Assert reset to TCPC0 (ANX7447) for required delay (1ms) only if
* we have a battery
*
* Note: The TEST_R pin is not hooked up to a GPIO on all boards, so
* verify the name exists before setting it. After the name is
* introduced for later board firmware, this pin will still be wired
* to USB2_OTG_ID on the proto boards, which should be set to open
* drain so it can't be driven high.
*/
if (gpio_is_implemented(GPIO_USB_C0_PD_RST) &&
battery_is_present() == BP_YES) {
gpio_set_level(GPIO_USB_C0_PD_RST, 1);
msleep(ANX74XX_RESET_HOLD_MS);
gpio_set_level(GPIO_USB_C0_PD_RST, 0);
msleep(ANX74XX_RESET_FINISH_MS);
}
#endif
/*
* C1: Assert reset to TCPC1 (PS8751) for required delay (1ms) only if
* we have a battery, otherwise we may brown out the system.
*/
if (battery_is_present() == BP_YES) {
/*
* TODO(crbug:846412): After refactor, ensure that battery has
* enough charge to last the reboot as well
*/
gpio_set_level(GPIO_USB_C1_PD_RST_ODL, 0);
msleep(PS8XXX_RESET_DELAY_MS);
gpio_set_level(GPIO_USB_C1_PD_RST_ODL, 1);
} else {
CPRINTS("Skipping C1 TCPC reset because no battery");
}
}
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