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/* Copyright 2020 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 "hooks.h"
#include "i2c.h"
#include "ioexpanders.h"
#include "tca6416a.h"
#include "tca6424a.h"
/******************************************************************************
* Initialize IOExpanders.
*/
static int dut_chg_en_state;
/* Enable all ioexpander outputs. */
int init_ioexpanders(void)
{
int ret;
/*
* Init TCA6416A, PORT 0
* NAME | DIR | Initial setting
* -------------------------------------------------
* BIT-0 (SBU_UART_SEL) | O | 0
* BIT-1 (ATMEL_RESET_L) | O | 0
* BIT-2 (SBU_FLIP_SEL) | O | 1
* BIT-3 (USB3_A0_MUX_SEL) | O | 0
* BIT-4 (USB3_A0_MUX_EN_L) | O | 0
* BIT-5 (USB3_A0_PWR_EN) | O | 0
* BIT-6 (UART_18_SEL) | O | 0
* BIT-7 (USERVO_POWER_EN) | O | 0
*/
ret = tca6416a_write_byte(1, TCA6416A_OUT_PORT_0, 0x04);
if (ret != EC_SUCCESS)
return ret;
ret = tca6416a_write_byte(1, TCA6416A_DIR_PORT_0, 0x00);
if (ret != EC_SUCCESS)
return ret;
/*
* Init TCA6416A, PORT 1
* NAME | DIR | Initial setting
* -------------------------------------------------------
* BIT-0 (USERVO_FASTBOOT_MUX_SEL) | O | 0
* BIT-1 (USB3_A1_PWR_EN) | O | 0
* BIT-2 (USB3_A1_MUX_SEL) | O | 0
* BIT-3 (BOARD_ID) | I | x
* BIT-4 (BOARD ID) | I | x
* BIT-5 (BOARD_ID) | I | x
* BIT-6 (CMUX_EN) | O | 1
* BIT-7 (DONGLE_DET) | I | x
*/
ret = tca6416a_write_byte(1, TCA6416A_OUT_PORT_1, 0x40);
if (ret != EC_SUCCESS)
return ret;
ret = tca6416a_write_byte(1, TCA6416A_DIR_PORT_1, 0xb8);
if (ret != EC_SUCCESS)
return ret;
/*
* Init TCA6424A, PORT 0
* NAME | DIR | Initial setting
* -------------------------------------------------
* BIT-0 (EN_PP5000_ALT_3P3) | O | 0
* BIT-1 (EN_PP3300_ETH) | O | 1
* BIT-2 (EN_PP3300_DP) | O | 0
* BIT-3 (FAULT_CLEAR_CC) | O | 0
* BIT-4 (EN_VOUT_BUF_CC1) | O | 0
* BIT-5 (EN_VOUT_BUF_CC2) | O | 0
* BIT-6 (DUT_CHG_EN) | O | 0
* BIT-7 (HOST_OR_CHG_CTL | O | 0
*/
ret = tca6424a_write_byte(1, TCA6424A_OUT_PORT_0, 0x02);
if (ret != EC_SUCCESS)
return ret;
ret = tca6424a_write_byte(1, TCA6424A_DIR_PORT_0, 0x00);
if (ret != EC_SUCCESS)
return ret;
/*
* Init TCA6424A, PORT 1
* NAME | DIR | Initial setting
* ------------------------------------------------------
* BIT-0 (USERVO_FAULT_L) | I | x
* BIT-1 (USB3_A0_FAULT_L) | I | x
* BIT-2 (USB3_A1_FAULT_L) | I | x
* BIT-3 (USB_DUTCHG_FLT_ODL) | I | x
* BIT-4 (PP3300_DP_FAULT_L) | I | x
* BIT-5 (DAC_BUF1_LATCH_FAULT_L) | I | x
* BIT-6 (DAC_BUF2_LATCH_FAULT_L) | I | x
* BIT-7 (PP5000_SRC_SEL) | I | x
*/
ret = tca6424a_write_byte(1, TCA6424A_DIR_PORT_1, 0xff);
if (ret != EC_SUCCESS)
return ret;
/*
* Init TCA6424A, PORT 2
* NAME | DIR | Initial setting
* ------------------------------------------------
* BIT-0 (VBUS_DISCHRG_EN) | O | 0
* BIT-1 (USBH_PWRDN_L) | O | 1
* BIT-2 (UNUSED) | I | x
* BIT-3 (UNUSED) | I | x
* BIT-4 (UNUSED) | I | x
* BIT-5 (UNUSED) | I | x
* BIT-6 (UNUSED) | I | x
* BIT-7 (DBG_LED_K_ODL) | O | 0
*/
ret = tca6424a_write_byte(1, TCA6424A_OUT_PORT_2, 0x02);
if (ret != EC_SUCCESS)
return ret;
ret = tca6424a_write_byte(1, TCA6424A_DIR_PORT_2, 0x7c);
if (ret != EC_SUCCESS)
return ret;
/* Clear any faults */
read_faults();
return EC_SUCCESS;
}
static void ioexpanders_irq(void)
{
int fault;
fault = read_faults();
if (!(fault & USERVO_FAULT_L))
ccprintf("FAULT: Microservo USB A port load switch\n");
if (!(fault & USB3_A0_FAULT_L))
ccprintf("FAULT: USB3 A0 port load switch\n");
if (!(fault & USB3_A1_FAULT_L))
ccprintf("FAULT: USB3 A1 port load switch\n");
if (!(fault & USB_DUTCHG_FLT_ODL))
ccprintf("FAULT: Overcurrent on Charger or DUB CC/SBU lines\n");
if (!(fault & PP3300_DP_FAULT_L))
ccprintf("FAULT: Overcurrent on DisplayPort\n");
if (!(fault & DAC_BUF1_LATCH_FAULT_L)) {
ccprintf("FAULT: CC1 drive circuitry has exceeded thermal ");
ccprintf("limits or exceeded current limits. Power ");
ccprintf("off DAC0 to clear the fault\n");
}
if (!(fault & DAC_BUF1_LATCH_FAULT_L)) {
ccprintf("FAULT: CC2 drive circuitry has exceeded thermal ");
ccprintf("limits or exceeded current limits. Power ");
ccprintf("off DAC1 to clear the fault\n");
}
}
DECLARE_DEFERRED(ioexpanders_irq);
int irq_ioexpanders(void)
{
hook_call_deferred(&ioexpanders_irq_data, 0);
return 0;
}
inline int sbu_uart_sel(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 0, en);
}
inline int atmel_reset_l(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 1, en);
}
inline int sbu_flip_sel(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 2, en);
}
inline int usb3_a0_mux_sel(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 3, en);
}
inline int usb3_a0_mux_en_l(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 4, en);
}
inline int usb3_a0_pwr_en(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 5, en);
}
inline int uart_18_sel(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 6, en);
}
inline int uservo_power_en(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_0, 7, en);
}
inline int uservo_fastboot_mux_sel(enum uservo_fastboot_mux_sel_t sel)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_1, 0, sel);
}
inline int usb3_a1_pwr_en(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_1, 1, en);
}
inline int usb3_a1_mux_sel(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_1, 2, en);
}
inline int board_id_det(void)
{
int id;
id = tca6416a_read_byte(1, TCA6416A_IN_PORT_1);
if (id < 0)
return id;
/* Board ID consists of bits 5, 4, and 3 */
return (id >> 3) & 0x7;
}
inline int cmux_en(int en)
{
return tca6416a_write_bit(1, TCA6416A_OUT_PORT_1, 6, en);
}
inline int dongle_det(void)
{
return tca6416a_read_bit(1, TCA6416A_IN_PORT_1, 7);
}
inline int en_pp5000_alt_3p3(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 0, en);
}
inline int en_pp3300_eth(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 1, en);
}
inline int en_pp3300_dp(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 2, en);
}
inline int fault_clear_cc(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 3, en);
}
inline int en_vout_buf_cc1(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 4, en);
}
inline int en_vout_buf_cc2(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 5, en);
}
int dut_chg_en(int en)
{
dut_chg_en_state = en;
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 6, en);
}
int get_dut_chg_en(void)
{
return dut_chg_en_state;
}
inline int host_or_chg_ctl(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_0, 7, en);
}
inline int read_faults(void)
{
return tca6424a_read_byte(1, TCA6424A_IN_PORT_1);
}
inline int vbus_dischrg_en(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_2, 0, en);
}
inline int usbh_pwrdn_l(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_2, 1, en);
}
inline int tca_gpio_dbg_led_k_odl(int en)
{
return tca6424a_write_bit(1, TCA6424A_OUT_PORT_2, 7, !en);
}
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