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