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qmk_firmware/keyboards/system76/system76_ec.c

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/*
* Copyright (C) 2021 System76
* Copyright (C) 2021 Jimmy Cassis <KernelOops@outlook.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "dynamic_keymap.h"
#include "raw_hid.h"
#include "rgb_matrix.h"
#include "version.h"
enum Command {
CMD_PROBE = 1, // Probe for System76 EC protocol
CMD_BOARD = 2, // Read board string
CMD_VERSION = 3, // Read version string
CMD_RESET = 6, // Reset to bootloader
CMD_KEYMAP_GET = 9, // Get keyboard map index
CMD_KEYMAP_SET = 10, // Set keyboard map index
CMD_LED_GET_VALUE = 11, // Get LED value by index
CMD_LED_SET_VALUE = 12, // Set LED value by index
CMD_LED_GET_COLOR = 13, // Get LED color by index
CMD_LED_SET_COLOR = 14, // Set LED color by index
CMD_LED_GET_MODE = 15, // Get LED matrix mode and speed
CMD_LED_SET_MODE = 16, // Set LED matrix mode and speed
CMD_MATRIX_GET = 17, // Get currently pressed keys
CMD_LED_SAVE = 18, // Save LED settings to ROM
CMD_SET_NO_INPUT = 19, // Enable/disable no input mode
};
bool input_disabled = false;
#define CMD_LED_INDEX_ALL 0xFF
static bool keymap_get(uint8_t layer, uint8_t output, uint8_t input, uint16_t *value) {
if (layer < dynamic_keymap_get_layer_count()) {
if (output < MATRIX_ROWS) {
if (input < MATRIX_COLS) {
*value = dynamic_keymap_get_keycode(layer, output, input);
return true;
}
}
}
return false;
}
static bool keymap_set(uint8_t layer, uint8_t output, uint8_t input, uint16_t value) {
if (layer < dynamic_keymap_get_layer_count()) {
if (output < MATRIX_ROWS) {
if (input < MATRIX_COLS) {
dynamic_keymap_set_keycode(layer, output, input, value);
return true;
}
}
}
return false;
}
static bool bootloader_reset = false;
static bool bootloader_unlocked = false;
void system76_ec_unlock(void) {
#ifdef RGB_MATRIX_CUSTOM_KB
rgb_matrix_mode_noeeprom(RGB_MATRIX_CUSTOM_unlocked);
#endif
#ifdef SYSTEM76_EC
bootloader_unlocked = true;
#endif
}
bool system76_ec_is_unlocked(void) { return bootloader_unlocked; }
#ifdef RGB_MATRIX_CUSTOM_KB
enum Mode {
MODE_SOLID_COLOR = 0,
MODE_PER_KEY,
#ifndef DISABLE_RGB_MATRIX_ANIMATIONS
MODE_CYCLE_ALL,
MODE_CYCLE_LEFT_RIGHT,
MODE_CYCLE_UP_DOWN,
MODE_CYCLE_OUT_IN,
MODE_CYCLE_OUT_IN_DUAL,
MODE_RAINBOW_MOVING_CHEVRON,
MODE_CYCLE_PINWHEEL,
MODE_CYCLE_SPIRAL,
MODE_RAINDROPS,
MODE_SPLASH,
MODE_MULTISPLASH,
#endif // DISABLE_RGB_MATRIX_ANIMATIONS
MODE_ACTIVE_KEYS,
MODE_DISABLED,
MODE_LAST,
};
// clang-format off
static enum rgb_matrix_effects mode_map[] = {
RGB_MATRIX_SOLID_COLOR,
RGB_MATRIX_CUSTOM_raw_rgb,
#ifndef DISABLE_RGB_MATRIX_ANIMATIONS
RGB_MATRIX_CYCLE_ALL,
RGB_MATRIX_CYCLE_LEFT_RIGHT,
RGB_MATRIX_CYCLE_UP_DOWN,
RGB_MATRIX_CYCLE_OUT_IN,
RGB_MATRIX_CYCLE_OUT_IN_DUAL,
RGB_MATRIX_RAINBOW_MOVING_CHEVRON,
RGB_MATRIX_CYCLE_PINWHEEL,
RGB_MATRIX_CYCLE_SPIRAL,
RGB_MATRIX_RAINDROPS,
RGB_MATRIX_SPLASH,
RGB_MATRIX_MULTISPLASH,
#endif // DISABLE_RGB_MATRIX_ANIMATIONS
RGB_MATRIX_CUSTOM_active_keys,
RGB_MATRIX_NONE,
};
// clang-format on
_Static_assert(sizeof(mode_map) == MODE_LAST, "mode_map_length");
RGB raw_rgb_data[RGB_MATRIX_LED_COUNT];
// clang-format off
rgb_config_t layer_rgb[DYNAMIC_KEYMAP_LAYER_COUNT] = {
// Layer 0
{
.enable = 1,
.mode = RGB_MATRIX_DEFAULT_MODE,
.hsv = {
.h = RGB_MATRIX_DEFAULT_HUE,
.s = RGB_MATRIX_DEFAULT_SAT,
.v = RGB_MATRIX_DEFAULT_VAL,
},
.speed = RGB_MATRIX_DEFAULT_SPD,
.flags = LED_FLAG_KEYLIGHT,
},
// Layer 1
{
.enable = 1,
.mode = RGB_MATRIX_CUSTOM_active_keys,
.hsv = {
.h = RGB_MATRIX_DEFAULT_HUE,
.s = RGB_MATRIX_DEFAULT_SAT,
.v = RGB_MATRIX_DEFAULT_VAL,
},
.speed = RGB_MATRIX_DEFAULT_SPD,
.flags = LED_FLAG_KEYLIGHT,
},
// Layer 2
{
.enable = 1,
.mode = RGB_MATRIX_CUSTOM_active_keys,
.hsv = {
.h = RGB_MATRIX_DEFAULT_HUE,
.s = RGB_MATRIX_DEFAULT_SAT,
.v = RGB_MATRIX_DEFAULT_VAL,
},
.speed = RGB_MATRIX_DEFAULT_SPD,
.flags = LED_FLAG_KEYLIGHT,
},
// Layer 3
{
.enable = 1,
.mode = RGB_MATRIX_CUSTOM_active_keys,
.hsv = {
.h = RGB_MATRIX_DEFAULT_HUE,
.s = RGB_MATRIX_DEFAULT_SAT,
.v = RGB_MATRIX_DEFAULT_VAL,
},
.speed = RGB_MATRIX_DEFAULT_SPD,
.flags = LED_FLAG_KEYLIGHT,
},
};
// clang-format on
// Read or write EEPROM data with checks for being inside System76 EC region.
static bool system76_ec_eeprom_op(void *buf, uint16_t size, uint16_t offset, bool write) {
uint16_t addr = SYSTEM76_EC_EEPROM_ADDR + offset;
uint16_t end = addr + size;
// Check for overflow and zero size
if ((end > addr) && (addr >= SYSTEM76_EC_EEPROM_ADDR) && (end <= (SYSTEM76_EC_EEPROM_ADDR + SYSTEM76_EC_EEPROM_SIZE))) {
if (write) {
eeprom_update_block((const void *)buf, (void *)addr, size);
} else {
eeprom_read_block((void *)buf, (const void *)addr, size);
}
return true;
} else {
return false;
}
}
// Read or write EEPROM RGB parameters.
void system76_ec_rgb_eeprom(bool write) {
uint16_t layer_rgb_size = sizeof(layer_rgb);
system76_ec_eeprom_op((void *)layer_rgb, layer_rgb_size, 0, write);
system76_ec_eeprom_op((void *)raw_rgb_data, sizeof(raw_rgb_data), layer_rgb_size, write);
}
// Update RGB parameters on layer change.
void system76_ec_rgb_layer(layer_state_t layer_state) {
if (!bootloader_unlocked) {
uint8_t layer = get_highest_layer(layer_state);
if (layer < DYNAMIC_KEYMAP_LAYER_COUNT) {
rgb_matrix_config = layer_rgb[layer];
}
}
}
#endif // RGB_MATRIX_CUSTOM_KB
void raw_hid_receive(uint8_t *data, uint8_t length) {
// Error response by default, set to success by commands
data[1] = 1;
switch (data[0]) {
case CMD_PROBE:
// Signature
data[2] = 0x76;
data[3] = 0xEC;
// Version
data[4] = 0x01;
data[1] = 0;
break;
case CMD_BOARD:
strncpy((char *)&data[2], QMK_KEYBOARD, length - 2);
data[1] = 0;
break;
case CMD_VERSION:
strncpy((char *)&data[2], QMK_VERSION, length - 2);
data[1] = 0;
break;
case CMD_RESET:
if (bootloader_unlocked) {
data[1] = 0;
bootloader_reset = true;
}
break;
case CMD_KEYMAP_GET: {
uint16_t value = 0;
if (keymap_get(data[2], data[3], data[4], &value)) {
data[5] = (uint8_t)value;
data[6] = (uint8_t)(value >> 8);
data[1] = 0;
}
} break;
case CMD_KEYMAP_SET: {
uint16_t value = ((uint16_t)data[5]) | (((uint16_t)data[6]) << 8);
if (keymap_set(data[2], data[3], data[4], value)) {
data[1] = 0;
}
} break;
#ifdef RGB_MATRIX_CUSTOM_KB
case CMD_LED_GET_VALUE:
if (!bootloader_unlocked) {
uint8_t index = data[2];
for (uint8_t layer = 0; layer < DYNAMIC_KEYMAP_LAYER_COUNT; layer++) {
if (index == (0xF0 | layer)) {
data[3] = layer_rgb[layer].hsv.v;
data[4] = RGB_MATRIX_MAXIMUM_BRIGHTNESS;
data[1] = 0;
break;
}
}
}
break;
case CMD_LED_SET_VALUE:
if (!bootloader_unlocked) {
uint8_t index = data[2];
uint8_t value = data[3];
if (value >= RGB_MATRIX_MAXIMUM_BRIGHTNESS) {
value = RGB_MATRIX_MAXIMUM_BRIGHTNESS;
}
for (uint8_t layer = 0; layer < DYNAMIC_KEYMAP_LAYER_COUNT; layer++) {
if (index == (0xF0 | layer)) {
layer_rgb[layer].hsv.v = value;
data[1] = 0;
system76_ec_rgb_layer(layer_state);
break;
}
}
}
break;
case CMD_LED_GET_COLOR:
if (!bootloader_unlocked) {
uint8_t index = data[2];
if (index < RGB_MATRIX_LED_COUNT) {
data[3] = raw_rgb_data[index].r;
data[4] = raw_rgb_data[index].g;
data[5] = raw_rgb_data[index].b;
data[1] = 0;
} else {
for (uint8_t layer = 0; layer < DYNAMIC_KEYMAP_LAYER_COUNT; layer++) {
if (index == (0xF0 | layer)) {
data[3] = layer_rgb[layer].hsv.h;
data[4] = layer_rgb[layer].hsv.s;
data[5] = 0;
data[1] = 0;
break;
}
}
}
}
break;
case CMD_LED_SET_COLOR:
if (!bootloader_unlocked) {
uint8_t index = data[2];
RGB rgb = {
.r = data[3],
.g = data[4],
.b = data[5],
};
if (index < RGB_MATRIX_LED_COUNT) {
raw_rgb_data[index] = rgb;
data[1] = 0;
} else {
for (uint8_t layer = 0; layer < DYNAMIC_KEYMAP_LAYER_COUNT; layer++) {
if (index == (0xF0 | layer)) {
layer_rgb[layer].hsv.h = rgb.r;
layer_rgb[layer].hsv.s = rgb.g;
// Ignore rgb.b
data[1] = 0;
system76_ec_rgb_layer(layer_state);
break;
}
}
}
}
break;
case CMD_LED_GET_MODE:
if (!bootloader_unlocked) {
uint8_t layer = data[2];
if (layer < DYNAMIC_KEYMAP_LAYER_COUNT) {
enum rgb_matrix_effects mode = layer_rgb[layer].mode;
for (uint8_t i = 0; i < MODE_LAST; i++) {
if (mode_map[i] == mode) {
data[3] = i;
data[4] = layer_rgb[layer].speed;
data[1] = 0;
break;
}
}
}
}
break;
case CMD_LED_SET_MODE:
if (!bootloader_unlocked) {
uint8_t layer = data[2];
uint8_t mode = data[3];
uint8_t speed = data[4];
if (layer < DYNAMIC_KEYMAP_LAYER_COUNT && mode < MODE_LAST) {
layer_rgb[layer].mode = mode_map[mode];
layer_rgb[layer].speed = speed;
data[1] = 0;
system76_ec_rgb_layer(layer_state);
}
}
break;
case CMD_LED_SAVE:
if (!bootloader_unlocked) {
system76_ec_rgb_eeprom(true);
data[1] = 0;
}
break;
#endif // RGB_MATRIX_CUSTOM_KB
case CMD_MATRIX_GET: {
// TODO: Improve performance?
data[2] = matrix_rows();
data[3] = matrix_cols();
uint8_t byte = 4;
uint8_t bit = 0;
for (uint8_t row = 0; row < matrix_rows(); row++) {
for (uint8_t col = 0; col < matrix_cols(); col++) {
if (byte < length) {
if (matrix_is_on(row, col)) {
data[byte] |= (1 << bit);
} else {
data[byte] &= ~(1 << bit);
}
}
bit++;
if (bit >= 8) {
byte++;
bit = 0;
}
}
}
data[1] = 0;
} break;
case CMD_SET_NO_INPUT: {
clear_keyboard();
input_disabled = data[2] != 0;
data[1] = 0;
} break;
}
raw_hid_send(data, length);
if (bootloader_reset) {
// Give host time to read response
wait_ms(100);
// Jump to the bootloader
bootloader_jump();
}
}
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