/*
 * Copyright (c) 2020 Pete Johanson
 *
 * SPDX-License-Identifier: MIT
 */

#include <dt-bindings/zmk/matrix-transform.h>
#include <behaviors/keymap.dtsi>
#include <behaviors/hid.dtsi>

/ {
	chosen {
		zmk,kscan = &kscan0;
		zmk,matrix_transform = &default_transform;
	};

	kscan0: kscan_comp {
		compatible = "zmk,kscan-composite";

		label = "KSCAN_COMP";
		rows = <4>;
		columns = <16>;

		left {
			kscan = <&kscan_left>;
		};

		right {
			kscan = <&kscan_right>;
			 // TODO: Actually put this in the kscan driver, so it can report
			 // HID events directly to host if plugged in directly.
			column-offset = <8>;
		};
	};

	default_transform: keymap_transform_0 {
		compatible = "zmk,matrix-transform";
// | MX6  | MX5  | MX4  | MX3  | MX2  | MX1  |                               | MX1  | MX2  | MX3  | MX4  | MX5  | MX6  |
// | MX12 | MX11 | MX10 | MX9  | MX8  | MX7  |                               | MX7  | MX8  | MX9  | MX10 | MX11 | MX12 |
// | MX20 | MX19 | MX18 | MX17 | MX16 | MX15 | MX14 | MX13 |   | MX13 | MX14 | MX15 | MX16 | MX17 | MX18 | MX19 | MX20 |
//                    | MX25 | MX24 | MX23 | MX22 | MX21 |       | MX21 | MX22 | MX23 | MX24 | MX25 |
		map = <
RC(0,0) RC(0,1) RC(0,2) RC(0,3) RC(0,4) RC(0,5)                                 RC(0,10) RC(0,11) RC(0,12) RC(0,13) RC(0,14) RC(0,15)
RC(1,0) RC(1,1) RC(1,2) RC(1,3) RC(1,4) RC(1,5)                                 RC(1,10) RC(1,11) RC(1,12) RC(1,13) RC(1,14) RC(1,15)
RC(2,0) RC(2,1) RC(2,2) RC(2,3) RC(2,4) RC(2,5) RC(2,6) RC(2,7) RC(2,8) RC(2,9) RC(2,10) RC(2,11) RC(2,12) RC(2,13) RC(2,14) RC(2,15)
                        RC(3,3) RC(3,4) RC(3,5) RC(3,6) RC(3,7) RC(3,8) RC(3,9) RC(3,10) RC(3,11) RC(3,12)
		>;
	};

// | MX5  | MX4  | MX3  | MX2  | MX1  |                               | MX1  | MX2  | MX3  | MX4  | MX5  |
// | MX11 | MX10 | MX9  | MX8  | MX7  |                               | MX7  | MX8  | MX9  | MX10 | MX11 |
// | MX19 | MX18 | MX17 | MX16 | MX15 | MX14 | MX13 |   | MX13 | MX14 | MX15 | MX16 | MX17 | MX18 | MX19 |
//             | MX25 | MX24 | MX23 | MX22 | MX21 |       | MX21 | MX22 | MX23 | MX24 | MX25 |
	five_column_transform: keymap_transform_1 {
		compatible = "zmk,matrix-transform";
		map = <
RC(0,0) RC(0,1) RC(0,2) RC(0,3) RC(0,4)                                 RC(0,9) RC(0,10) RC(0,11) RC(0,12) RC(0,13)
RC(1,0) RC(1,1) RC(1,2) RC(1,3) RC(1,4)                                 RC(1,9) RC(1,10) RC(1,11) RC(1,12) RC(1,13)
RC(2,0) RC(2,1) RC(2,2) RC(2,3) RC(2,4) RC(2,5) RC(2,6) RC(2,7) RC(2,8) RC(2,9) RC(2,10) RC(2,11) RC(2,12) RC(2,13)
                RC(3,2) RC(3,3) RC(3,4) RC(3,5) RC(3,6) RC(3,7) RC(3,8) RC(3,9) RC(3,10) RC(3,11)
		>;
	};

	kscan_left: kscan_left {
		compatible = "zmk,kscan-gpio-matrix";
		label = "KSCAN_LEFT";

		diode-direction = "row2col";
		row-gpios = <&pro_micro_pins 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
		            <&pro_micro_pins 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 4 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;

		col-gpios = <&pro_micro_pins 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
		            <&pro_micro_pins 16 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 18 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 19 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 20 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 21 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
	};

	kscan_right: kscan_right {
		compatible = "zmk,kscan-gpio-matrix";
		label = "KSCAN_RIGHT";

		diode-direction = "row2col";
		row-gpios = <&pro_micro_pins 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
		            <&pro_micro_pins 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 4 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;

		col-gpios = <&pro_micro_pins 21 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
		            <&pro_micro_pins 20 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 19 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 18 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 16 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
					<&pro_micro_pins 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
	};

	// TODO: Encoder node(s)
	// TODO: OLED node
	// TODO: RGB node(s)
};