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/* Copyright 2021 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.
*/
#include "common.h"
#include "it83xx_pd.h"
#include "ite_pd_intc.h"
#include "task.h"
#include "tcpm/tcpm.h"
#include "usb_pd.h"
void chip_pd_irq(enum usbpd_port port)
{
task_clear_pending_irq(usbpd_ctrl_regs[port].irq);
/* check status */
if (IS_ENABLED(IT83XX_INTC_FAST_SWAP_SUPPORT) &&
IS_ENABLED(CONFIG_USB_PD_FRS_TCPC) &&
IS_ENABLED(CONFIG_USB_PD_REV30)) {
/*
* FRS detection must handle first, because we need to short
* the interrupt -> board_frs_handler latency-critical time.
*/
if (USBPD_IS_FAST_SWAP_DETECT(port)) {
/* clear detect FRS signal (cc to GND) status */
USBPD_CLEAR_FRS_DETECT_STATUS(port);
if (board_frs_handler)
board_frs_handler(port);
/* inform TCPMv2 to change state */
pd_got_frs_signal(port);
}
}
if (USBPD_IS_HARD_RESET_DETECT(port)) {
/* clear interrupt */
IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_HARD_RESET_DETECT;
USBPD_SW_RESET(port);
task_set_event(PD_PORT_TO_TASK_ID(port),
PD_EVENT_RX_HARD_RESET);
}
if (USBPD_IS_RX_DONE(port)) {
tcpm_enqueue_message(port);
/* clear RX done interrupt */
IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_MSG_RX_DONE;
}
if (USBPD_IS_TX_DONE(port)) {
#ifdef CONFIG_USB_PD_TCPM_DRIVER_IT8XXX2
it8xxx2_clear_tx_error_status(port);
/* check TX status, clear by TX_DONE status too */
if (USBPD_IS_TX_ERR(port))
it8xxx2_get_tx_error_status(port);
#endif
/* clear TX done interrupt */
IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_MSG_TX_DONE;
task_set_event(PD_PORT_TO_TASK_ID(port),
TASK_EVENT_PHY_TX_DONE);
}
if (IS_ENABLED(IT83XX_INTC_PLUG_IN_OUT_SUPPORT)) {
if (USBPD_IS_PLUG_IN_OUT_DETECT(port)) {
if (USBPD_IS_PLUG_IN(port))
/*
* When tcpc detect type-c plug in:
* 1)If we are sink, disable detect interrupt,
* messages on cc line won't trigger interrupt.
* 2)If we are source, then set plug out
* detection.
*/
switch_plug_out_type(port);
else
/*
* When tcpc detect type-c plug out:
* switch to detect plug in.
*/
IT83XX_USBPD_TCDCR(port) &=
~USBPD_REG_PLUG_OUT_SELECT;
/* clear type-c device plug in/out detect interrupt */
IT83XX_USBPD_TCDCR(port) |=
USBPD_REG_PLUG_IN_OUT_DETECT_STAT;
task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_CC);
}
}
}
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