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// Copyright 2023 Massdrop, Inc.
// SPDX-License-Identifier: GPL-2.0-or-later
#include "keyboard.h"
#include "analog.h"
#include "gpio.h"
#include "wait.h"
#define S_UP B12
#define E_UP_N B13
#define S_DN1 B14
#define E_DN1_N B15
#define E_VBUS_1 A8
#define E_VBUS_2 A15
#define SRC_1 B8
#define SRC_2 B9
#define HUB_RESET_N D2
#define IRST B1
#define SDB_N B2
#define C1_A5_SENSE A4
#define C1_B5_SENSE A7
#define C2_A5_SENSE C4
#define C2_B5_SENSE B0
static inline void digital_write(pin_t pin, uint8_t level) {
setPinOutput(pin);
writePin(pin, level);
}
uint16_t v_con_1 = 0;
uint16_t v_con_2 = 0;
uint16_t v_con_3 = 0;
uint16_t v_con_4 = 0;
void keyboard_USB_enable(void) {
// initial state
digital_write(S_UP, 0);
digital_write(E_UP_N, 1);
digital_write(S_DN1, 1);
digital_write(E_DN1_N, 1);
digital_write(E_VBUS_1, 0);
digital_write(E_VBUS_2, 0);
digital_write(SRC_1, 1);
digital_write(SRC_2, 1);
setPinInput(C1_A5_SENSE);
setPinInput(C1_B5_SENSE);
setPinInput(C2_A5_SENSE);
setPinInput(C2_B5_SENSE);
// reset hub
digital_write(HUB_RESET_N, 0);
wait_ms(100);
digital_write(HUB_RESET_N, 1);
wait_ms(500); // Allow power dissipation time on CC lines
v_con_1 = analogReadPin(C1_A5_SENSE);
v_con_2 = analogReadPin(C1_B5_SENSE);
v_con_3 = analogReadPin(C2_A5_SENSE);
v_con_4 = analogReadPin(C2_B5_SENSE);
// TODO: dynamic port port configure logic?
digital_write(E_UP_N, 0); // HOST enable
digital_write(E_DN1_N, 0); // EXTRA enable
digital_write(E_VBUS_1, 1); // USBC-1 enable full power I/O
digital_write(E_VBUS_2, 1); // USBC-2 enable full power I/O
if ((v_con_1 + v_con_2) > (v_con_3 + v_con_4)) {
digital_write(S_UP, 0); // HOST to USBC-1
digital_write(S_DN1, 1); // EXTRA to USBC-2
digital_write(SRC_1, 1); // HOST on USBC-1
digital_write(SRC_2, 0); // EXTRA available on USBC-2
} else {
digital_write(S_UP, 1); // EXTRA to USBC-1
digital_write(S_DN1, 0); // HOST to USBC-2
digital_write(SRC_1, 0); // EXTRA available on USBC-1
digital_write(SRC_2, 1); // HOST on USBC-2
}
}
void keyboard_ISSI_enable(void) {
#ifdef RGB_MATRIX_ENABLE
digital_write(IRST, 0);
digital_write(SDB_N, 1);
#endif
}
void keyboard_pre_init_kb(void) {
keyboard_USB_enable();
keyboard_ISSI_enable();
keyboard_pre_init_user();
}
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