Add Djinn. (#17382)

* Add Djinn.

* Review comments.

* Further cleanup.

keyboards/tzarc/djinn/config.h

@@ -0,0 +1,74 @@
+// Copyright 2018-2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+#include "config_common.h"
+
+// Encoders -- right-side is reversed
+#define ENCODERS_PAD_A \
+    { C14 }
+#define ENCODERS_PAD_B \
+    { C15 }
+#define ENCODERS_PAD_A_RIGHT \
+    { C15 }
+#define ENCODERS_PAD_B_RIGHT \
+    { C14 }
+
+#ifndef ENCODER_RESOLUTION
+#    define ENCODER_RESOLUTION 2
+#endif // ENCODER_RESOLUTION
+
+// Bootloader
+#define STM32_BOOTLOADER_DUAL_BANK TRUE
+#define STM32_BOOTLOADER_DUAL_BANK_GPIO B7
+
+// Peripheral power control pins
+#define LCD_POWER_ENABLE_PIN A6
+
+// Split configuration
+#define SPLIT_TRANSACTION_IDS_KB RPC_ID_SYNC_STATE_KB
+#define SPLIT_TRANSPORT_MIRROR
+#define SPLIT_LAYER_STATE_ENABLE
+#define SPLIT_LED_STATE_ENABLE
+#define SPLIT_MODS_ENABLE
+#define SPLIT_WPM_ENABLE
+
+// SPI Configuration
+#define SPI_DRIVER SPID3
+#define SPI_SCK_PIN C10
+#define SPI_SCK_PAL_MODE 6
+#define SPI_MOSI_PIN C12
+#define SPI_MOSI_PAL_MODE 6
+#define SPI_MISO_PIN C11
+#define SPI_MISO_PAL_MODE 6
+
+// LCD Configuration
+#define LCD_RST_PIN B3
+#define LCD_CS_PIN D2
+#define LCD_DC_PIN A15
+#ifndef LCD_ACTIVITY_TIMEOUT
+#    define LCD_ACTIVITY_TIMEOUT 30000
+#endif // LCD_ACTIVITY_TIMEOUT
+
+// Backlight driver (to control LCD backlight)
+#define BACKLIGHT_LEVELS 4
+#define BACKLIGHT_PWM_DRIVER PWMD17
+#define BACKLIGHT_PWM_CHANNEL 1
+#define BACKLIGHT_PAL_MODE 1
+
+// RGB configuration
+#define RGB_DI_PIN B2
+#define WS2812_EXTERNAL_PULLUP
+#define WS2812_PWM_DRIVER PWMD20
+#define WS2812_PWM_CHANNEL 1
+#define WS2812_PWM_PAL_MODE 3
+#define WS2812_DMA_STREAM STM32_DMA1_STREAM1
+#define WS2812_DMA_CHANNEL 1
+#define WS2812_DMAMUX_ID STM32_DMAMUX1_TIM20_UP
+
+// Audio configuration
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
+#ifndef STARTUP_SONG
+#    define STARTUP_SONG SONG(STARTUP_SOUND)
+#endif // STARTUP_SONG