coreboot-libre-fam15h-rdimm/3rdparty/chromeec/chip/it83xx/intc.c

/* 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.
 */

#include "common.h"
#include "intc.h"
#include "it83xx_pd.h"
#include "kmsc_chip.h"
#include "registers.h"
#include "task.h"
#include "tcpm.h"
#include "usb_pd.h"

#ifdef CONFIG_USB_PD_TCPM_ITE83XX
static void chip_pd_irq(enum usbpd_port port)
{
	task_clear_pending_irq(usbpd_ctrl_regs[port].irq);

	/* check status */
	if (USBPD_IS_HARD_RESET_DETECT(port)) {
		/* clear interrupt */
		IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_HARD_RESET_DETECT;
		task_set_event(PD_PORT_TO_TASK_ID(port),
			PD_EVENT_TCPC_RESET, 0);
	} else {
		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)) {
			/* 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, 0);
		}
#ifdef IT83XX_INTC_PLUG_IN_SUPPORT
		if (USBPD_IS_PLUG_IN_OUT_DETECT(port)) {
			/*
			 * When tcpc detect type-c plug in, then disable
			 * this interrupt. Because any cc volt changes
			 * (include pd negotiation) would trigger plug in
			 * interrupt, frequently plug in interrupt and wakeup
			 * pd task may cause task starvation or device dead
			 * (ex.transmit lots SRC_Cap).
			 *
			 * When polling disconnect will enable detect type-c
			 * plug in again.
			 *
			 * Clear detect type-c plug in interrupt status.
			 */
			IT83XX_USBPD_TCDCR(port) |=
				(USBPD_REG_PLUG_IN_OUT_DETECT_DISABLE |
				 USBPD_REG_PLUG_IN_OUT_DETECT_STAT);
			task_set_event(PD_PORT_TO_TASK_ID(port),
				PD_EVENT_CC, 0);
		}
#endif //IT83XX_INTC_PLUG_IN_SUPPORT
	}
}
#endif

void intc_cpu_int_group_5(void)
{
	/* Determine interrupt number. */
	int intc_group_5 = intc_get_ec_int();

	switch (intc_group_5) {
#if defined(CONFIG_HOSTCMD_X86) && defined(HAS_TASK_KEYPROTO)
	case IT83XX_IRQ_KBC_OUT:
		lpc_kbc_obe_interrupt();
		break;

	case IT83XX_IRQ_KBC_IN:
		lpc_kbc_ibf_interrupt();
		break;
#endif
	default:
		break;
	}
}
DECLARE_IRQ(CPU_INT_GROUP_5, intc_cpu_int_group_5, 2);

void intc_cpu_int_group_4(void)
{
	/* Determine interrupt number. */
	int intc_group_4 = intc_get_ec_int();

	switch (intc_group_4) {
#ifdef CONFIG_HOSTCMD_X86
	case IT83XX_IRQ_PMC_IN:
		pm1_ibf_interrupt();
		break;

	case IT83XX_IRQ_PMC2_IN:
		pm2_ibf_interrupt();
		break;

	case IT83XX_IRQ_PMC3_IN:
		pm3_ibf_interrupt();
		break;

	case IT83XX_IRQ_PMC4_IN:
		pm4_ibf_interrupt();
		break;

	case IT83XX_IRQ_PMC5_IN:
		pm5_ibf_interrupt();
		break;
#endif
	default:
		break;
	}
}
DECLARE_IRQ(CPU_INT_GROUP_4, intc_cpu_int_group_4, 2);

void intc_cpu_int_group_12(void)
{
	/* Determine interrupt number. */
	int intc_group_12 = intc_get_ec_int();

	switch (intc_group_12) {
#ifdef CONFIG_PECI
	case IT83XX_IRQ_PECI:
		peci_interrupt();
		break;
#endif
#ifdef CONFIG_HOSTCMD_ESPI
	case IT83XX_IRQ_ESPI:
		espi_interrupt();
		break;

	case IT83XX_IRQ_ESPI_VW:
		espi_vw_interrupt();
		break;
#endif
#ifdef CONFIG_USB_PD_TCPM_ITE83XX
	case IT83XX_IRQ_USBPD0:
		chip_pd_irq(USBPD_PORT_A);
		break;

	case IT83XX_IRQ_USBPD1:
		chip_pd_irq(USBPD_PORT_B);
		break;
#endif /* CONFIG_USB_PD_TCPM_ITE83XX */
	default:
		break;
	}
}
DECLARE_IRQ(CPU_INT_GROUP_12, intc_cpu_int_group_12, 2);

void intc_cpu_int_group_7(void)
{
	/* Determine interrupt number. */
	int intc_group_7 = intc_get_ec_int();

	switch (intc_group_7) {
#ifdef CONFIG_ADC
	case IT83XX_IRQ_ADC:
		adc_interrupt();
		break;
#endif
	default:
		break;
	}
}
DECLARE_IRQ(CPU_INT_GROUP_7, intc_cpu_int_group_7, 2);

void intc_cpu_int_group_6(void)
{
	/* Determine interrupt number. */
	int intc_group_6 = intc_get_ec_int();

	switch (intc_group_6) {
#if defined(CONFIG_I2C_MASTER) || defined(CONFIG_I2C_SLAVE)
	case IT83XX_IRQ_SMB_A:
#ifdef CONFIG_I2C_SLAVE
		if (IT83XX_SMB_SFFCTL & IT83XX_SMB_SAFE)
			i2c_slv_interrupt(IT83XX_I2C_CH_A);
		else
#endif
			i2c_interrupt(IT83XX_I2C_CH_A);
		break;

	case IT83XX_IRQ_SMB_B:
		i2c_interrupt(IT83XX_I2C_CH_B);
		break;

	case IT83XX_IRQ_SMB_C:
		i2c_interrupt(IT83XX_I2C_CH_C);
		break;

	case IT83XX_IRQ_SMB_D:
#ifdef CONFIG_I2C_SLAVE
		if (!(IT83XX_I2C_CTR(3) & IT83XX_I2C_MODE))
			i2c_slv_interrupt(IT83XX_I2C_CH_D);
		else
#endif
			i2c_interrupt(IT83XX_I2C_CH_D);
		break;

	case IT83XX_IRQ_SMB_E:
#ifdef CONFIG_I2C_SLAVE
		if (!(IT83XX_I2C_CTR(0) & IT83XX_I2C_MODE))
			i2c_slv_interrupt(IT83XX_I2C_CH_E);
		else
#endif
			i2c_interrupt(IT83XX_I2C_CH_E);
		break;

	case IT83XX_IRQ_SMB_F:
#ifdef CONFIG_I2C_SLAVE
		if (!(IT83XX_I2C_CTR(1) & IT83XX_I2C_MODE))
			i2c_slv_interrupt(IT83XX_I2C_CH_F);
		else
#endif
			i2c_interrupt(IT83XX_I2C_CH_F);
		break;
#endif
	default:
		break;
	}
}
DECLARE_IRQ(CPU_INT_GROUP_6, intc_cpu_int_group_6, 2);