Merge b1419b4611 into 507c948ed8

2025-07-17 13:12:08 +00:00 · 2025-07-17 11:33:37 +10:00 · 2025-07-17 11:33:37 +10:00 · 7d264d1a65
commit 7d264d1a65
parent 507c948ed8 b1419b4611
10 changed files with 1217 additions and 3 deletions
--- a/builddefs/common_features.mk
+++ b/builddefs/common_features.mk
@ -338,7 +338,7 @@ LED_MATRIX_DRIVER := snled27351
 endif

 LED_MATRIX_ENABLE ?= no
-VALID_LED_MATRIX_TYPES := is31fl3218 is31fl3236 is31fl3729 is31fl3731 is31fl3733 is31fl3736 is31fl3737 is31fl3741 is31fl3742a is31fl3743a is31fl3745 is31fl3746a snled27351 custom
+VALID_LED_MATRIX_TYPES := is31fl3218 is31fl3236 is31fl3729 is31fl3731 is31fl3733 is31fl3736 is31fl3737 is31fl3741 is31fl3742a is31fl3743a is31fl3745 is31fl3746a snled27351 snled27351_spi custom

 ifeq ($(strip $(LED_MATRIX_ENABLE)), yes)
    ifeq ($(filter $(LED_MATRIX_DRIVER),$(VALID_LED_MATRIX_TYPES)),)
@ -435,6 +435,12 @@ ifeq ($(strip $(LED_MATRIX_ENABLE)), yes)
        SRC += snled27351-mono.c
    endif

+    ifeq ($(strip $(LED_MATRIX_DRIVER)), snled27351_spi)
+        SPI_DRIVER_REQUIRED = yes
+        COMMON_VPATH += $(DRIVER_PATH)/led
+        SRC += snled27351-mono-spi.c
+    endif
+
    ifeq ($(strip $(LED_MATRIX_CUSTOM_KB)), yes)
        OPT_DEFS += -DLED_MATRIX_CUSTOM_KB
    endif
@ -454,7 +460,7 @@ endif

 RGB_MATRIX_ENABLE ?= no

-VALID_RGB_MATRIX_TYPES := aw20216s is31fl3218 is31fl3236 is31fl3729 is31fl3731 is31fl3733 is31fl3736 is31fl3737 is31fl3741 is31fl3742a is31fl3743a is31fl3745 is31fl3746a snled27351 ws2812 custom
+VALID_RGB_MATRIX_TYPES := aw20216s is31fl3218 is31fl3236 is31fl3729 is31fl3731 is31fl3733 is31fl3736 is31fl3737 is31fl3741 is31fl3742a is31fl3743a is31fl3745 is31fl3746a snled27351 snled27351_spi ws2812 custom
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
    ifeq ($(filter $(RGB_MATRIX_DRIVER),$(VALID_RGB_MATRIX_TYPES)),)
        $(call CATASTROPHIC_ERROR,Invalid RGB_MATRIX_DRIVER,RGB_MATRIX_DRIVER="$(RGB_MATRIX_DRIVER)" is not a valid matrix type)
@ -561,6 +567,12 @@ ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
        SRC += snled27351.c
    endif

+    ifeq ($(strip $(RGB_MATRIX_DRIVER)), snled27351_spi)
+        SPI_DRIVER_REQUIRED = yes
+        COMMON_VPATH += $(DRIVER_PATH)/led
+        SRC += snled27351-spi.c
+    endif
+
    ifeq ($(strip $(RGB_MATRIX_DRIVER)), ws2812)
        WS2812_DRIVER_REQUIRED := yes
    endif
--- a/data/schemas/keyboard.jsonschema
+++ b/data/schemas/keyboard.jsonschema
@ -540,7 +540,8 @@
                        "is31fl3743a",
                        "is31fl3745",
                        "is31fl3746a",
-                        "snled27351"
+                        "snled27351",
+                        "snled27351_spi"
                    ]
                },
                "center_point": {
@ -625,6 +626,7 @@
                        "is31fl3745",
                        "is31fl3746a",
                        "snled27351",
+                        "snled27351_spi",
                        "ws2812"
                    ]
                },
--- a/drivers/led/snled27351-mono-spi.c
+++ b/drivers/led/snled27351-mono-spi.c
@ -0,0 +1,235 @@
+/* Copyright 2021 @ Keychron (https://www.keychron.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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "snled27351-simple-spi.h"
+#include "spi_master.h"
+
+#define SNLED27351_PWM_REGISTER_COUNT 192
+#define SNLED27351_LED_CONTROL_REGISTER_COUNT 24
+
+
+#ifndef SNLED27351_PHASE_CHANNEL
+#    define SNLED27351_PHASE_CHANNEL MSKPHASE_12CHANNEL
+#endif
+
+#ifndef SNLED27351_CURRENT_TUNE
+#    define SNLED27351_CURRENT_TUNE \
+        { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
+#endif
+
+#define SNLED27351_WRITE (0 << 7)
+#define SNLED27351_READ (1 << 7)
+#define SNLED27351_PATTERN (2 << 4)
+
+#ifdef DRIVER_CS_PINS
+pin_t cs_pins[] = DRIVER_CS_PINS;
+#else
+error "no DRIVER_CS_PINS defined"
+#endif
+
+// These buffers match the snled27351 PWM registers.
+// The control buffers match the PG0 LED On/Off registers.
+// Storing them like this is optimal for I2C transfers to the registers.
+// We could optimize this and take out the unused registers from these
+// buffers and the transfers in snled27351_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+uint8_t g_pwm_buffer[SNLED27351_DRIVER_COUNT][SNLED27351_PWM_REGISTER_COUNT];
+bool    g_pwm_buffer_update_required[SNLED27351_DRIVER_COUNT] = {false};
+
+uint8_t g_led_control_registers[SNLED27351_DRIVER_COUNT][SNLED27351_LED_CONTROL_REGISTER_COUNT]             = {0};
+bool    g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT] = {false};
+
+
+
+bool snled27351_write(uint8_t index, uint8_t page, uint8_t reg, uint8_t *data, uint8_t len) {
+    static uint8_t spi_transfer_buffer[2] = {0};
+
+    if (index > ARRAY_SIZE(((pin_t[])DRIVER_CS_PINS)) - 1) return false;
+
+    if (!spi_start(cs_pins[index], false, 0, SNLED23751_SPI_DIVISOR)) {
+        spi_stop();
+        return false;
+    }
+
+    spi_transfer_buffer[0] = SNLED27351_WRITE | SNLED27351_PATTERN | (page & 0x0F);
+    spi_transfer_buffer[1] = reg;
+
+    if (spi_transmit(spi_transfer_buffer, 2) != SPI_STATUS_SUCCESS) {
+        spi_stop();
+        return false;
+    }
+
+    if (spi_transmit(data, len) != SPI_STATUS_SUCCESS) {
+        spi_stop();
+        return false;
+    }
+
+    spi_stop();
+    return true;
+}
+
+bool snled27351_write_register(uint8_t index, uint8_t page, uint8_t reg, uint8_t data) {
+    return snled27351_write(index, page, reg, &data, 1);
+}
+
+bool snled27351_write_pwm_buffer(uint8_t index, uint8_t *pwm_buffer) {
+    if (g_pwm_buffer_update_required[index]) {
+        snled27351_write(index, LED_PWM_PAGE, 0, g_pwm_buffer[index], SNLED27351_PWM_REGISTER_COUNT);
+    }
+    g_pwm_buffer_update_required[index] = false;
+    return true;
+}
+
+void snled27351_init_drivers(void) {
+#if defined(LED_DRIVER_SHUTDOWN_PIN)
+    setPinOutput(LED_DRIVER_SHUTDOWN_PIN);
+    writePinHigh(LED_DRIVER_SHUTDOWN_PIN);
+#endif
+
+    spi_init();
+
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_init(i);
+
+    for (int index = 0; index < SNLED27351_LED_COUNT; index++) {
+        snled27351_set_led_control_register(index, true);
+    }
+
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_update_led_control_registers(i);
+}
+
+void snled27351_init(uint8_t index) {
+    setPinOutput(cs_pins[index]);
+    writePinHigh(cs_pins[index]);
+    // Setting LED driver to shutdown mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_SHUT_DOWN_MODE);
+    // Setting internal channel pulldown/pullup
+    snled27351_write_register(index, FUNCTION_PAGE, PDU_REG, MSKSET_CA_CB_CHANNEL);
+    // Select number of scan phase
+    snled27351_write_register(index, FUNCTION_PAGE, SCAN_PHASE_REG, SNLED27351_PHASE_CHANNEL);
+    // Setting PWM Delay Phase
+    snled27351_write_register(index, FUNCTION_PAGE, SLEW_RATE_CONTROL_MODE1_REG, MSKPWM_DELAY_PHASE_ENABLE);
+    // Setting Driving/Sinking Channel Slew Rate
+    snled27351_write_register(index, FUNCTION_PAGE, SLEW_RATE_CONTROL_MODE2_REG, MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_ENABLE);
+    // Setting Iref
+    snled27351_write_register(index, FUNCTION_PAGE, SOFTWARE_SLEEP_REG, MSKSLEEP_DISABLE);
+
+    // Set LED CONTROL PAGE (Page 0)
+    uint8_t on_off_reg[LED_CONTROL_ON_OFF_LENGTH] = {0};
+    snled27351_write(index, LED_CONTROL_PAGE, 0, on_off_reg, LED_CONTROL_ON_OFF_LENGTH);
+
+    // Set PWM PAGE (Page 1)
+    uint8_t pwm_reg[LED_PWM_LENGTH];
+    memset(pwm_reg, 0, LED_PWM_LENGTH);
+    snled27351_write(index, LED_PWM_PAGE, 0, pwm_reg, LED_PWM_LENGTH);
+
+    // Set CURRENT PAGE (Page 4)
+    uint8_t current_tune_reg[LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE;
+    snled27351_write(index, CURRENT_TUNE_PAGE, 0, current_tune_reg, LED_CURRENT_TUNE_LENGTH);
+
+    //    // Enable LEDs ON/OFF
+    //    memset(on_off_reg, 0xFF, LED_CONTROL_ON_OFF_LENGTH);
+    //    snled27351_write(index, LED_CONTROL_PAGE, 0, on_off_reg, LED_CONTROL_ON_OFF_LENGTH);
+
+    // Setting LED driver to normal mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_NORMAL_MODE);
+}
+
+void snled27351_set_value(int index, uint8_t value) {
+    snled27351_led_t led;
+    if (index >= 0 && index < SNLED27351_LED_COUNT) {
+        memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
+
+        g_pwm_buffer[led.driver][led.v]          = value;
+        g_pwm_buffer_update_required[led.driver] = true;
+    }
+}
+
+void snled27351_set_value_all(uint8_t value) {
+    for (int i = 0; i < SNLED27351_LED_COUNT; i++) {
+        snled27351_set_value(i, value);
+    }
+}
+
+void snled27351_set_led_control_register(uint8_t index, bool value) {
+    snled27351_led_t led;
+    memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
+
+    uint8_t control_register = led.v / 8;
+    uint8_t bit_value        = led.v % 8;
+
+    if (value) {
+        g_led_control_registers[led.driver][control_register] |= (1 << bit_value);
+    } else {
+        g_led_control_registers[led.driver][control_register] &= ~(1 << bit_value);
+    }
+
+    g_led_control_registers_update_required[led.driver] = true;
+}
+
+void snled27351_update_pwm_buffers(uint8_t index) {
+    if (g_pwm_buffer_update_required[index]) {
+        if (!snled27351_write_pwm_buffer(index, g_pwm_buffer[index])) {
+            g_led_control_registers_update_required[index] = true;
+        }
+    }
+    g_pwm_buffer_update_required[index] = false;
+}
+
+void snled27351_update_led_control_registers(uint8_t index) {
+    if (g_led_control_registers_update_required[index]) {
+        snled27351_write(index, LED_CONTROL_PAGE, 0, g_led_control_registers[index], 24);
+    }
+    g_led_control_registers_update_required[index] = false;
+}
+
+void snled27351_flush(void) {
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_update_pwm_buffers(i);
+}
+
+void snled27351_shutdown(void) {
+#    if defined(LED_DRIVER_SHUTDOWN_PIN)
+    writePinLow(LED_DRIVER_SHUTDOWN_PIN);
+#    else
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_sw_shutdown(i);
+#    endif
+}
+
+void snled27351_exit_shutdown(void) {
+#    if defined(LED_DRIVER_SHUTDOWN_PIN)
+    writePinHigh(LED_DRIVER_SHUTDOWN_PIN);
+#    else
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_sw_return_normal(i);
+#    endif
+}
+
+void snled27351_sw_return_normal(uint8_t index) {
+    // Select to function page
+    // Setting LED driver to normal mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_NORMAL_MODE);
+}
+
+void snled27351_sw_shutdown(uint8_t index) {
+    // Select to function page
+    // Setting LED driver to shutdown mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_SHUT_DOWN_MODE);
+    // Write SW Sleep Register
+    snled27351_write_register(index, FUNCTION_PAGE, SOFTWARE_SLEEP_REG, MSKSLEEP_ENABLE);
+}
--- a/drivers/led/snled27351-mono-spi.h
+++ b/drivers/led/snled27351-mono-spi.h
@ -0,0 +1,346 @@
+/* Copyright 2021 @ Keychron (https://www.keychron.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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "progmem.h"
+#include "util.h"
+
+#if defined(LED_MATRIX_SNLED27351_SPI)
+#    define SNLED27351_LED_COUNT LED_MATRIX_LED_COUNT
+#endif
+
+#define SNLED27351_DRIVER_COUNT (sizeof(cs_pins) / sizeof(pin_t))
+typedef struct snled27351_led_t {
+    uint8_t driver : 2;
+    uint8_t v;
+} PACKED snled27351_led_t;
+
+extern const snled27351_led_t PROGMEM g_snled27351_leds[SNLED27351_LED_COUNT];
+
+void snled27351_init_drivers(void);
+void snled27351_init(uint8_t index);
+bool snled27351_write_register(uint8_t index, uint8_t page, uint8_t reg, uint8_t data);
+bool snled27351_write_pwm_buffer(uint8_t index, uint8_t *pwm_buffer);
+
+void snled27351_set_value(int index, uint8_t value);
+void snled27351_set_value_all(uint8_t value);
+
+void snled27351_set_led_control_register(uint8_t index, bool value);
+
+// This should not be called from an interrupt
+// (eg. from a timer interrupt).
+// Call this while idle (in between matrix scans).
+// If the buffer is dirty, it will update the driver with the buffer.
+void snled27351_update_pwm_buffers(uint8_t index);
+void snled27351_update_led_control_registers(uint8_t index);
+void snled27351_flush(void);
+void snled27351_shutdown(void);
+void snled27351_exit_shutdown(void);
+void snled27351_sw_return_normal(uint8_t index);
+void snled27351_sw_shutdown(uint8_t index);
+
+// Registers Page Define
+#define CONFIGURE_CMD_PAGE 0xFD
+#define LED_CONTROL_PAGE 0x00
+#define LED_PWM_PAGE 0x01
+#define FUNCTION_PAGE 0x03
+#define CURRENT_TUNE_PAGE 0x04
+
+// Function Register: address 0x00
+#define CONFIGURATION_REG 0x00
+#define MSKSW_SHUT_DOWN_MODE (0x0 << 0)
+#define MSKSW_NORMAL_MODE (0x1 << 0)
+
+#define DRIVER_ID_REG 0x11
+#define SNLED27351_ID 0x8A
+
+#define PDU_REG 0x13
+#define MSKSET_CA_CB_CHANNEL 0xAA
+#define MSKCLR_CA_CB_CHANNEL 0x00
+
+#define SCAN_PHASE_REG 0x14
+#define MSKPHASE_12CHANNEL 0x00
+#define MSKPHASE_11CHANNEL 0x01
+#define MSKPHASE_10CHANNEL 0x02
+#define MSKPHASE_9CHANNEL 0x03
+#define MSKPHASE_8CHANNEL 0x04
+#define MSKPHASE_7CHANNEL 0x05
+#define MSKPHASE_6CHANNEL 0x06
+#define MSKPHASE_5CHANNEL 0x07
+#define MSKPHASE_4CHANNEL 0x08
+#define MSKPHASE_3CHANNEL 0x09
+#define MSKPHASE_2CHANNEL 0x0A
+#define MSKPHASE_1CHANNEL 0x0B
+
+#define SLEW_RATE_CONTROL_MODE1_REG 0x15
+#define MSKPWM_DELAY_PHASE_ENABLE 0x04
+#define MSKPWM_DELAY_PHASE_DISABLE 0x00
+
+#define SLEW_RATE_CONTROL_MODE2_REG 0x16
+#define MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_ENABLE 0xC0
+#define MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_DISABLE 0x00
+
+#define OPEN_SHORT_ENABLE_REG 0x17
+#define MSKOPEN_DETECTION_ENABLE (0x01 << 7)
+#define MSKOPEN_DETECTION_DISABLE (0x00)
+
+#define MSKSHORT_DETECTION_ENABLE (0x01 << 6)
+#define MSKSHORT_DETECTION_DISABLE (0x00)
+
+#define OPEN_SHORT_DUTY_REG 0x18
+#define OPEN_SHORT_FLAG_REG 0x19
+
+#define MSKOPEN_DETECTION_INTERRUPT_ENABLE (0x01 << 7)
+#define MSKOPEN_DETECTION_INTERRUPT_DISABLE (0x00)
+
+#define MSKSHORT_DETECTION_INTERRUPT_ENABLE (0x01 << 6)
+#define MSKSHORT_DETECTION_INTERRUPT_DISABLE (0x00)
+
+#define SOFTWARE_SLEEP_REG 0x1A
+#define MSKSLEEP_ENABLE 0x02
+#define MSKSLEEP_DISABLE 0x00
+
+// LED Control Registers
+#define LED_CONTROL_ON_OFF_FIRST_ADDR 0x0
+#define LED_CONTROL_ON_OFF_LAST_ADDR 0x17
+#define LED_CONTROL_ON_OFF_LENGTH ((LED_CONTROL_ON_OFF_LAST_ADDR - LED_CONTROL_ON_OFF_FIRST_ADDR) + 1)
+
+#define LED_CONTROL_OPEN_FIRST_ADDR 0x18
+#define LED_CONTROL_OPEN_LAST_ADDR 0x2F
+#define LED_CONTROL_OPEN_LENGTH ((LED_CONTROL_OPEN_LAST_ADDR - LED_CONTROL_OPEN_FIRST_ADDR) + 1)
+
+#define LED_CONTROL_SHORT_FIRST_ADDR 0x30
+#define LED_CONTROL_SHORT_LAST_ADDR 0x47
+#define LED_CONTROL_SHORT_LENGTH ((LED_CONTROL_SHORT_LAST_ADDR - LED_CONTROL_SHORT_FIRST_ADDR) + 1)
+
+#define LED_CONTROL_PAGE_LENGTH 0x48
+
+// LED Control Registers
+#define LED_PWM_FIRST_ADDR 0x00
+#define LED_PWM_LAST_ADDR 0xBF
+#define LED_PWM_LENGTH 0xC0
+
+// Current Tune Registers
+#define LED_CURRENT_TUNE_FIRST_ADDR 0x00
+#define LED_CURRENT_TUNE_LAST_ADDR 0x0B
+#define LED_CURRENT_TUNE_LENGTH 0x0C
+
+#define CB1_CA1 0x00
+#define CB1_CA2 0x01
+#define CB1_CA3 0x02
+#define CB1_CA4 0x03
+#define CB1_CA5 0x04
+#define CB1_CA6 0x05
+#define CB1_CA7 0x06
+#define CB1_CA8 0x07
+#define CB1_CA9 0x08
+#define CB1_CA10 0x09
+#define CB1_CA11 0x0A
+#define CB1_CA12 0x0B
+#define CB1_CA13 0x0C
+#define CB1_CA14 0x0D
+#define CB1_CA15 0x0E
+#define CB1_CA16 0x0F
+
+#define CB2_CA1 0x10
+#define CB2_CA2 0x11
+#define CB2_CA3 0x12
+#define CB2_CA4 0x13
+#define CB2_CA5 0x14
+#define CB2_CA6 0x15
+#define CB2_CA7 0x16
+#define CB2_CA8 0x17
+#define CB2_CA9 0x18
+#define CB2_CA10 0x19
+#define CB2_CA11 0x1A
+#define CB2_CA12 0x1B
+#define CB2_CA13 0x1C
+#define CB2_CA14 0x1D
+#define CB2_CA15 0x1E
+#define CB2_CA16 0x1F
+
+#define CB3_CA1 0x20
+#define CB3_CA2 0x21
+#define CB3_CA3 0x22
+#define CB3_CA4 0x23
+#define CB3_CA5 0x24
+#define CB3_CA6 0x25
+#define CB3_CA7 0x26
+#define CB3_CA8 0x27
+#define CB3_CA9 0x28
+#define CB3_CA10 0x29
+#define CB3_CA11 0x2A
+#define CB3_CA12 0x2B
+#define CB3_CA13 0x2C
+#define CB3_CA14 0x2D
+#define CB3_CA15 0x2E
+#define CB3_CA16 0x2F
+
+#define CB4_CA1 0x30
+#define CB4_CA2 0x31
+#define CB4_CA3 0x32
+#define CB4_CA4 0x33
+#define CB4_CA5 0x34
+#define CB4_CA6 0x35
+#define CB4_CA7 0x36
+#define CB4_CA8 0x37
+#define CB4_CA9 0x38
+#define CB4_CA10 0x39
+#define CB4_CA11 0x3A
+#define CB4_CA12 0x3B
+#define CB4_CA13 0x3C
+#define CB4_CA14 0x3D
+#define CB4_CA15 0x3E
+#define CB4_CA16 0x3F
+
+#define CB5_CA1 0x40
+#define CB5_CA2 0x41
+#define CB5_CA3 0x42
+#define CB5_CA4 0x43
+#define CB5_CA5 0x44
+#define CB5_CA6 0x45
+#define CB5_CA7 0x46
+#define CB5_CA8 0x47
+#define CB5_CA9 0x48
+#define CB5_CA10 0x49
+#define CB5_CA11 0x4A
+#define CB5_CA12 0x4B
+#define CB5_CA13 0x4C
+#define CB5_CA14 0x4D
+#define CB5_CA15 0x4E
+#define CB5_CA16 0x4F
+
+#define CB6_CA1 0x50
+#define CB6_CA2 0x51
+#define CB6_CA3 0x52
+#define CB6_CA4 0x53
+#define CB6_CA5 0x54
+#define CB6_CA6 0x55
+#define CB6_CA7 0x56
+#define CB6_CA8 0x57
+#define CB6_CA9 0x58
+#define CB6_CA10 0x59
+#define CB6_CA11 0x5A
+#define CB6_CA12 0x5B
+#define CB6_CA13 0x5C
+#define CB6_CA14 0x5D
+#define CB6_CA15 0x5E
+#define CB6_CA16 0x5F
+
+#define CB7_CA1 0x60
+#define CB7_CA2 0x61
+#define CB7_CA3 0x62
+#define CB7_CA4 0x63
+#define CB7_CA5 0x64
+#define CB7_CA6 0x65
+#define CB7_CA7 0x66
+#define CB7_CA8 0x67
+#define CB7_CA9 0x68
+#define CB7_CA10 0x69
+#define CB7_CA11 0x6A
+#define CB7_CA12 0x6B
+#define CB7_CA13 0x6C
+#define CB7_CA14 0x6D
+#define CB7_CA15 0x6E
+#define CB7_CA16 0x6F
+
+#define CB8_CA1 0x70
+#define CB8_CA2 0x71
+#define CB8_CA3 0x72
+#define CB8_CA4 0x73
+#define CB8_CA5 0x74
+#define CB8_CA6 0x75
+#define CB8_CA7 0x76
+#define CB8_CA8 0x77
+#define CB8_CA9 0x78
+#define CB8_CA10 0x79
+#define CB8_CA11 0x7A
+#define CB8_CA12 0x7B
+#define CB8_CA13 0x7C
+#define CB8_CA14 0x7D
+#define CB8_CA15 0x7E
+#define CB8_CA16 0x7F
+
+#define CB9_CA1 0x80
+#define CB9_CA2 0x81
+#define CB9_CA3 0x82
+#define CB9_CA4 0x83
+#define CB9_CA5 0x84
+#define CB9_CA6 0x85
+#define CB9_CA7 0x86
+#define CB9_CA8 0x87
+#define CB9_CA9 0x88
+#define CB9_CA10 0x89
+#define CB9_CA11 0x8A
+#define CB9_CA12 0x8B
+#define CB9_CA13 0x8C
+#define CB9_CA14 0x8D
+#define CB9_CA15 0x8E
+#define CB9_CA16 0x8F
+
+#define CB10_CA1 0x90
+#define CB10_CA2 0x91
+#define CB10_CA3 0x92
+#define CB10_CA4 0x93
+#define CB10_CA5 0x94
+#define CB10_CA6 0x95
+#define CB10_CA7 0x96
+#define CB10_CA8 0x97
+#define CB10_CA9 0x98
+#define CB10_CA10 0x99
+#define CB10_CA11 0x9A
+#define CB10_CA12 0x9B
+#define CB10_CA13 0x9C
+#define CB10_CA14 0x9D
+#define CB10_CA15 0x9E
+#define CB10_CA16 0x9F
+
+#define CB11_CA1 0xA0
+#define CB11_CA2 0xA1
+#define CB11_CA3 0xA2
+#define CB11_CA4 0xA3
+#define CB11_CA5 0xA4
+#define CB11_CA6 0xA5
+#define CB11_CA7 0xA6
+#define CB11_CA8 0xA7
+#define CB11_CA9 0xA8
+#define CB11_CA10 0xA9
+#define CB11_CA11 0xAA
+#define CB11_CA12 0xAB
+#define CB11_CA13 0xAC
+#define CB11_CA14 0xAD
+#define CB11_CA15 0xAE
+#define CB11_CA16 0xAF
+
+#define CB12_CA1 0xB0
+#define CB12_CA2 0xB1
+#define CB12_CA3 0xB2
+#define CB12_CA4 0xB3
+#define CB12_CA5 0xB4
+#define CB12_CA6 0xB5
+#define CB12_CA7 0xB6
+#define CB12_CA8 0xB7
+#define CB12_CA9 0xB8
+#define CB12_CA10 0xB9
+#define CB12_CA11 0xBA
+#define CB12_CA12 0xBB
+#define CB12_CA13 0xBC
+#define CB12_CA14 0xBD
+#define CB12_CA15 0xBE
+#define CB12_CA16 0xBF
--- a/drivers/led/snled27351-spi.c
+++ b/drivers/led/snled27351-spi.c
@ -0,0 +1,251 @@
+/* Copyright 2021 @ Keychron (https://www.keychron.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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "snled27351-spi.h"
+#include "spi_master.h"
+
+#define SNLED27351_PWM_REGISTER_COUNT 192
+#define SNLED27351_LED_CONTROL_REGISTER_COUNT 24
+
+
+#ifndef SNLED27351_PHASE_CHANNEL
+#    define SNLED27351_PHASE_CHANNEL MSKPHASE_12CHANNEL
+#endif
+
+#ifndef SNLED27351_CURRENT_TUNE
+#    define SNLED27351_CURRENT_TUNE \
+        { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
+#endif
+
+#define SNLED27351_WRITE (0 << 7)
+#define SNLED27351_READ (1 << 7)
+#define SNLED27351_PATTERN (2 << 4)
+
+#ifdef DRIVER_CS_PINS
+pin_t cs_pins[] = DRIVER_CS_PINS;
+#else
+error "no DRIVER_CS_PINS defined"
+#endif
+
+// These buffers match the snled27351 PWM registers.
+// The control buffers match the PG0 LED On/Off registers.
+// Storing them like this is optimal for I2C transfers to the registers.
+// We could optimize this and take out the unused registers from these
+// buffers and the transfers in snled27351_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+uint8_t g_pwm_buffer[SNLED27351_DRIVER_COUNT][SNLED27351_PWM_REGISTER_COUNT];
+bool    g_pwm_buffer_update_required[SNLED27351_DRIVER_COUNT] = {false};
+
+uint8_t g_led_control_registers[SNLED27351_DRIVER_COUNT][SNLED27351_LED_CONTROL_REGISTER_COUNT]             = {0};
+bool    g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT] = {false};
+
+
+
+bool snled27351_write(uint8_t index, uint8_t page, uint8_t reg, uint8_t *data, uint8_t len) {
+    static uint8_t spi_transfer_buffer[2] = {0};
+
+    if (index > ARRAY_SIZE(((pin_t[])DRIVER_CS_PINS)) - 1) return false;
+
+    if (!spi_start(cs_pins[index], false, 0, SNLED23751_SPI_DIVISOR)) {
+        spi_stop();
+        return false;
+    }
+
+    spi_transfer_buffer[0] = SNLED27351_WRITE | SNLED27351_PATTERN | (page & 0x0F);
+    spi_transfer_buffer[1] = reg;
+
+    if (spi_transmit(spi_transfer_buffer, 2) != SPI_STATUS_SUCCESS) {
+        spi_stop();
+        return false;
+    }
+
+    if (spi_transmit(data, len) != SPI_STATUS_SUCCESS) {
+        spi_stop();
+        return false;
+    }
+
+    spi_stop();
+    return true;
+}
+
+bool snled27351_write_register(uint8_t index, uint8_t page, uint8_t reg, uint8_t data) {
+    return snled27351_write(index, page, reg, &data, 1);
+}
+
+bool snled27351_write_pwm_buffer(uint8_t index, uint8_t *pwm_buffer) {
+    if (g_pwm_buffer_update_required[index]) {
+        snled27351_write(index, LED_PWM_PAGE, 0, g_pwm_buffer[index], SNLED27351_PWM_REGISTER_COUNT);
+    }
+    g_pwm_buffer_update_required[index] = false;
+    return true;
+}
+
+void snled27351_init_drivers(void) {
+#if defined(LED_DRIVER_SHUTDOWN_PIN)
+    setPinOutput(LED_DRIVER_SHUTDOWN_PIN);
+    writePinHigh(LED_DRIVER_SHUTDOWN_PIN);
+#endif
+
+    spi_init();
+
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_init(i);
+
+    for (int index = 0; index < SNLED27351_LED_COUNT; index++) {
+        snled27351_set_led_control_register(index, true, true, true);
+    }
+
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_update_led_control_registers(i);
+}
+
+void snled27351_init(uint8_t index) {
+    setPinOutput(cs_pins[index]);
+    writePinHigh(cs_pins[index]);
+    // Setting LED driver to shutdown mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_SHUT_DOWN_MODE);
+    // Setting internal channel pulldown/pullup
+    snled27351_write_register(index, FUNCTION_PAGE, PDU_REG, MSKSET_CA_CB_CHANNEL);
+    // Select number of scan phase
+    snled27351_write_register(index, FUNCTION_PAGE, SCAN_PHASE_REG, SNLED27351_PHASE_CHANNEL);
+    // Setting PWM Delay Phase
+    snled27351_write_register(index, FUNCTION_PAGE, SLEW_RATE_CONTROL_MODE1_REG, MSKPWM_DELAY_PHASE_ENABLE);
+    // Setting Driving/Sinking Channel Slew Rate
+    snled27351_write_register(index, FUNCTION_PAGE, SLEW_RATE_CONTROL_MODE2_REG, MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_ENABLE);
+    // Setting Iref
+    snled27351_write_register(index, FUNCTION_PAGE, SOFTWARE_SLEEP_REG, MSKSLEEP_DISABLE);
+
+    // Set LED CONTROL PAGE (Page 0)
+    uint8_t on_off_reg[LED_CONTROL_ON_OFF_LENGTH] = {0};
+    snled27351_write(index, LED_CONTROL_PAGE, 0, on_off_reg, LED_CONTROL_ON_OFF_LENGTH);
+
+    // Set PWM PAGE (Page 1)
+    uint8_t pwm_reg[LED_PWM_LENGTH];
+    memset(pwm_reg, 0, LED_PWM_LENGTH);
+    snled27351_write(index, LED_PWM_PAGE, 0, pwm_reg, LED_PWM_LENGTH);
+
+    // Set CURRENT PAGE (Page 4)
+    uint8_t current_tune_reg[LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE;
+    snled27351_write(index, CURRENT_TUNE_PAGE, 0, current_tune_reg, LED_CURRENT_TUNE_LENGTH);
+
+    //    // Enable LEDs ON/OFF
+    //    memset(on_off_reg, 0xFF, LED_CONTROL_ON_OFF_LENGTH);
+    //    snled27351_write(index, LED_CONTROL_PAGE, 0, on_off_reg, LED_CONTROL_ON_OFF_LENGTH);
+
+    // Setting LED driver to normal mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_NORMAL_MODE);
+}
+
+void snled27351_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
+    snled27351_led_t led;
+    if (index >= 0 && index < SNLED27351_LED_COUNT) {
+        memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
+
+        g_pwm_buffer[led.driver][led.r]          = red;
+        g_pwm_buffer[led.driver][led.g]          = green;
+        g_pwm_buffer[led.driver][led.b]          = blue;
+        g_pwm_buffer_update_required[led.driver] = true;
+    }
+}
+
+void snled27351_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
+    for (int i = 0; i < SNLED27351_LED_COUNT; i++) {
+        snled27351_set_color(i, red, green, blue);
+    }
+}
+
+void snled27351_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
+    snled27351_led_t led;
+    memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
+
+    uint8_t control_register_r = led.r / 8;
+    uint8_t control_register_g = led.g / 8;
+    uint8_t control_register_b = led.b / 8;
+    uint8_t bit_r              = led.r % 8;
+    uint8_t bit_g              = led.g % 8;
+    uint8_t bit_b              = led.b % 8;
+
+    if (red) {
+        g_led_control_registers[led.driver][control_register_r] |= (1 << bit_r);
+    } else {
+        g_led_control_registers[led.driver][control_register_r] &= ~(1 << bit_r);
+    }
+    if (green) {
+        g_led_control_registers[led.driver][control_register_g] |= (1 << bit_g);
+    } else {
+        g_led_control_registers[led.driver][control_register_g] &= ~(1 << bit_g);
+    }
+    if (blue) {
+        g_led_control_registers[led.driver][control_register_b] |= (1 << bit_b);
+    } else {
+        g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
+    }
+
+    g_led_control_registers_update_required[led.driver] = true;
+}
+
+void snled27351_update_pwm_buffers(uint8_t index) {
+    if (g_pwm_buffer_update_required[index]) {
+        if (!snled27351_write_pwm_buffer(index, g_pwm_buffer[index])) {
+            g_led_control_registers_update_required[index] = true;
+        }
+    }
+    g_pwm_buffer_update_required[index] = false;
+}
+
+void snled27351_update_led_control_registers(uint8_t index) {
+    if (g_led_control_registers_update_required[index]) {
+        snled27351_write(index, LED_CONTROL_PAGE, 0, g_led_control_registers[index], 24);
+    }
+    g_led_control_registers_update_required[index] = false;
+}
+
+void snled27351_flush(void) {
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_update_pwm_buffers(i);
+}
+
+void snled27351_shutdown(void) {
+#    if defined(LED_DRIVER_SHUTDOWN_PIN)
+    writePinLow(LED_DRIVER_SHUTDOWN_PIN);
+#    else
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_sw_shutdown(i);
+#    endif
+}
+
+void snled27351_exit_shutdown(void) {
+#    if defined(LED_DRIVER_SHUTDOWN_PIN)
+    writePinHigh(LED_DRIVER_SHUTDOWN_PIN);
+#    else
+    for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
+        snled27351_sw_return_normal(i);
+#    endif
+}
+
+void snled27351_sw_return_normal(uint8_t index) {
+    // Select to function page
+    // Setting LED driver to normal mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_NORMAL_MODE);
+}
+
+void snled27351_sw_shutdown(uint8_t index) {
+    // Select to function page
+    // Setting LED driver to shutdown mode
+    snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_SHUT_DOWN_MODE);
+    // Write SW Sleep Register
+    snled27351_write_register(index, FUNCTION_PAGE, SOFTWARE_SLEEP_REG, MSKSLEEP_ENABLE);
+}
--- a/drivers/led/snled27351-spi.h
+++ b/drivers/led/snled27351-spi.h
@ -0,0 +1,348 @@
+/* Copyright 2021 @ Keychron (https://www.keychron.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 2 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "progmem.h"
+#include "util.h"
+
+#if defined(RGB_MATRIX_SNLED27351_SPI)
+#    define SNLED27351_LED_COUNT RGB_MATRIX_LED_COUNT
+#endif
+
+#    define SNLED27351_DRIVER_COUNT (sizeof(cs_pins)/sizeof(pin_t))
+typedef struct snled27351_led_t {
+    uint8_t driver : 2;
+    uint8_t r;
+    uint8_t g;
+    uint8_t b;
+} PACKED snled27351_led_t;
+
+extern const snled27351_led_t PROGMEM g_snled27351_leds[SNLED27351_LED_COUNT];
+
+void snled27351_init_drivers(void);
+void snled27351_init(uint8_t index);
+bool snled27351_write_register(uint8_t index, uint8_t page, uint8_t reg, uint8_t data);
+bool snled27351_write_pwm_buffer(uint8_t index, uint8_t *pwm_buffer);
+
+void snled27351_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
+void snled27351_set_color_all(uint8_t red, uint8_t green, uint8_t blue);
+
+void snled27351_set_led_control_register(uint8_t index, bool red, bool green, bool blue);
+
+// This should not be called from an interrupt
+// (eg. from a timer interrupt).
+// Call this while idle (in between matrix scans).
+// If the buffer is dirty, it will update the driver with the buffer.
+void snled27351_update_pwm_buffers(uint8_t index);
+void snled27351_update_led_control_registers(uint8_t index);
+void snled27351_flush(void);
+void snled27351_shutdown(void);
+void snled27351_exit_shutdown(void);
+void snled27351_sw_return_normal(uint8_t index);
+void snled27351_sw_shutdown(uint8_t index);
+
+// Registers Page Define
+#define CONFIGURE_CMD_PAGE 0xFD
+#define LED_CONTROL_PAGE 0x00
+#define LED_PWM_PAGE 0x01
+#define FUNCTION_PAGE 0x03
+#define CURRENT_TUNE_PAGE 0x04
+
+// Function Register: address 0x00
+#define CONFIGURATION_REG 0x00
+#define MSKSW_SHUT_DOWN_MODE (0x0 << 0)
+#define MSKSW_NORMAL_MODE (0x1 << 0)
+
+#define DRIVER_ID_REG 0x11
+#define SNLED27351_ID 0x8A
+
+#define PDU_REG 0x13
+#define MSKSET_CA_CB_CHANNEL 0xAA
+#define MSKCLR_CA_CB_CHANNEL 0x00
+
+#define SCAN_PHASE_REG 0x14
+#define MSKPHASE_12CHANNEL 0x00
+#define MSKPHASE_11CHANNEL 0x01
+#define MSKPHASE_10CHANNEL 0x02
+#define MSKPHASE_9CHANNEL 0x03
+#define MSKPHASE_8CHANNEL 0x04
+#define MSKPHASE_7CHANNEL 0x05
+#define MSKPHASE_6CHANNEL 0x06
+#define MSKPHASE_5CHANNEL 0x07
+#define MSKPHASE_4CHANNEL 0x08
+#define MSKPHASE_3CHANNEL 0x09
+#define MSKPHASE_2CHANNEL 0x0A
+#define MSKPHASE_1CHANNEL 0x0B
+
+#define SLEW_RATE_CONTROL_MODE1_REG 0x15
+#define MSKPWM_DELAY_PHASE_ENABLE 0x04
+#define MSKPWM_DELAY_PHASE_DISABLE 0x00
+
+#define SLEW_RATE_CONTROL_MODE2_REG 0x16
+#define MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_ENABLE 0xC0
+#define MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_DISABLE 0x00
+
+#define OPEN_SHORT_ENABLE_REG 0x17
+#define MSKOPEN_DETECTION_ENABLE (0x01 << 7)
+#define MSKOPEN_DETECTION_DISABLE (0x00)
+
+#define MSKSHORT_DETECTION_ENABLE (0x01 << 6)
+#define MSKSHORT_DETECTION_DISABLE (0x00)
+
+#define OPEN_SHORT_DUTY_REG 0x18
+#define OPEN_SHORT_FLAG_REG 0x19
+
+#define MSKOPEN_DETECTION_INTERRUPT_ENABLE (0x01 << 7)
+#define MSKOPEN_DETECTION_INTERRUPT_DISABLE (0x00)
+
+#define MSKSHORT_DETECTION_INTERRUPT_ENABLE (0x01 << 6)
+#define MSKSHORT_DETECTION_INTERRUPT_DISABLE (0x00)
+
+#define SOFTWARE_SLEEP_REG 0x1A
+#define MSKSLEEP_ENABLE 0x02
+#define MSKSLEEP_DISABLE 0x00
+
+// LED Control Registers
+#define LED_CONTROL_ON_OFF_FIRST_ADDR 0x0
+#define LED_CONTROL_ON_OFF_LAST_ADDR 0x17
+#define LED_CONTROL_ON_OFF_LENGTH ((LED_CONTROL_ON_OFF_LAST_ADDR - LED_CONTROL_ON_OFF_FIRST_ADDR) + 1)
+
+#define LED_CONTROL_OPEN_FIRST_ADDR 0x18
+#define LED_CONTROL_OPEN_LAST_ADDR 0x2F
+#define LED_CONTROL_OPEN_LENGTH ((LED_CONTROL_OPEN_LAST_ADDR - LED_CONTROL_OPEN_FIRST_ADDR) + 1)
+
+#define LED_CONTROL_SHORT_FIRST_ADDR 0x30
+#define LED_CONTROL_SHORT_LAST_ADDR 0x47
+#define LED_CONTROL_SHORT_LENGTH ((LED_CONTROL_SHORT_LAST_ADDR - LED_CONTROL_SHORT_FIRST_ADDR) + 1)
+
+#define LED_CONTROL_PAGE_LENGTH 0x48
+
+// LED Control Registers
+#define LED_PWM_FIRST_ADDR 0x00
+#define LED_PWM_LAST_ADDR 0xBF
+#define LED_PWM_LENGTH 0xC0
+
+// Current Tune Registers
+#define LED_CURRENT_TUNE_FIRST_ADDR 0x00
+#define LED_CURRENT_TUNE_LAST_ADDR 0x0B
+#define LED_CURRENT_TUNE_LENGTH 0x0C
+
+#define CB1_CA1 0x00
+#define CB1_CA2 0x01
+#define CB1_CA3 0x02
+#define CB1_CA4 0x03
+#define CB1_CA5 0x04
+#define CB1_CA6 0x05
+#define CB1_CA7 0x06
+#define CB1_CA8 0x07
+#define CB1_CA9 0x08
+#define CB1_CA10 0x09
+#define CB1_CA11 0x0A
+#define CB1_CA12 0x0B
+#define CB1_CA13 0x0C
+#define CB1_CA14 0x0D
+#define CB1_CA15 0x0E
+#define CB1_CA16 0x0F
+
+#define CB2_CA1 0x10
+#define CB2_CA2 0x11
+#define CB2_CA3 0x12
+#define CB2_CA4 0x13
+#define CB2_CA5 0x14
+#define CB2_CA6 0x15
+#define CB2_CA7 0x16
+#define CB2_CA8 0x17
+#define CB2_CA9 0x18
+#define CB2_CA10 0x19
+#define CB2_CA11 0x1A
+#define CB2_CA12 0x1B
+#define CB2_CA13 0x1C
+#define CB2_CA14 0x1D
+#define CB2_CA15 0x1E
+#define CB2_CA16 0x1F
+
+#define CB3_CA1 0x20
+#define CB3_CA2 0x21
+#define CB3_CA3 0x22
+#define CB3_CA4 0x23
+#define CB3_CA5 0x24
+#define CB3_CA6 0x25
+#define CB3_CA7 0x26
+#define CB3_CA8 0x27
+#define CB3_CA9 0x28
+#define CB3_CA10 0x29
+#define CB3_CA11 0x2A
+#define CB3_CA12 0x2B
+#define CB3_CA13 0x2C
+#define CB3_CA14 0x2D
+#define CB3_CA15 0x2E
+#define CB3_CA16 0x2F
+
+#define CB4_CA1 0x30
+#define CB4_CA2 0x31
+#define CB4_CA3 0x32
+#define CB4_CA4 0x33
+#define CB4_CA5 0x34
+#define CB4_CA6 0x35
+#define CB4_CA7 0x36
+#define CB4_CA8 0x37
+#define CB4_CA9 0x38
+#define CB4_CA10 0x39
+#define CB4_CA11 0x3A
+#define CB4_CA12 0x3B
+#define CB4_CA13 0x3C
+#define CB4_CA14 0x3D
+#define CB4_CA15 0x3E
+#define CB4_CA16 0x3F
+
+#define CB5_CA1 0x40
+#define CB5_CA2 0x41
+#define CB5_CA3 0x42
+#define CB5_CA4 0x43
+#define CB5_CA5 0x44
+#define CB5_CA6 0x45
+#define CB5_CA7 0x46
+#define CB5_CA8 0x47
+#define CB5_CA9 0x48
+#define CB5_CA10 0x49
+#define CB5_CA11 0x4A
+#define CB5_CA12 0x4B
+#define CB5_CA13 0x4C
+#define CB5_CA14 0x4D
+#define CB5_CA15 0x4E
+#define CB5_CA16 0x4F
+
+#define CB6_CA1 0x50
+#define CB6_CA2 0x51
+#define CB6_CA3 0x52
+#define CB6_CA4 0x53
+#define CB6_CA5 0x54
+#define CB6_CA6 0x55
+#define CB6_CA7 0x56
+#define CB6_CA8 0x57
+#define CB6_CA9 0x58
+#define CB6_CA10 0x59
+#define CB6_CA11 0x5A
+#define CB6_CA12 0x5B
+#define CB6_CA13 0x5C
+#define CB6_CA14 0x5D
+#define CB6_CA15 0x5E
+#define CB6_CA16 0x5F
+
+#define CB7_CA1 0x60
+#define CB7_CA2 0x61
+#define CB7_CA3 0x62
+#define CB7_CA4 0x63
+#define CB7_CA5 0x64
+#define CB7_CA6 0x65
+#define CB7_CA7 0x66
+#define CB7_CA8 0x67
+#define CB7_CA9 0x68
+#define CB7_CA10 0x69
+#define CB7_CA11 0x6A
+#define CB7_CA12 0x6B
+#define CB7_CA13 0x6C
+#define CB7_CA14 0x6D
+#define CB7_CA15 0x6E
+#define CB7_CA16 0x6F
+
+#define CB8_CA1 0x70
+#define CB8_CA2 0x71
+#define CB8_CA3 0x72
+#define CB8_CA4 0x73
+#define CB8_CA5 0x74
+#define CB8_CA6 0x75
+#define CB8_CA7 0x76
+#define CB8_CA8 0x77
+#define CB8_CA9 0x78
+#define CB8_CA10 0x79
+#define CB8_CA11 0x7A
+#define CB8_CA12 0x7B
+#define CB8_CA13 0x7C
+#define CB8_CA14 0x7D
+#define CB8_CA15 0x7E
+#define CB8_CA16 0x7F
+
+#define CB9_CA1 0x80
+#define CB9_CA2 0x81
+#define CB9_CA3 0x82
+#define CB9_CA4 0x83
+#define CB9_CA5 0x84
+#define CB9_CA6 0x85
+#define CB9_CA7 0x86
+#define CB9_CA8 0x87
+#define CB9_CA9 0x88
+#define CB9_CA10 0x89
+#define CB9_CA11 0x8A
+#define CB9_CA12 0x8B
+#define CB9_CA13 0x8C
+#define CB9_CA14 0x8D
+#define CB9_CA15 0x8E
+#define CB9_CA16 0x8F
+
+#define CB10_CA1 0x90
+#define CB10_CA2 0x91
+#define CB10_CA3 0x92
+#define CB10_CA4 0x93
+#define CB10_CA5 0x94
+#define CB10_CA6 0x95
+#define CB10_CA7 0x96
+#define CB10_CA8 0x97
+#define CB10_CA9 0x98
+#define CB10_CA10 0x99
+#define CB10_CA11 0x9A
+#define CB10_CA12 0x9B
+#define CB10_CA13 0x9C
+#define CB10_CA14 0x9D
+#define CB10_CA15 0x9E
+#define CB10_CA16 0x9F
+
+#define CB11_CA1 0xA0
+#define CB11_CA2 0xA1
+#define CB11_CA3 0xA2
+#define CB11_CA4 0xA3
+#define CB11_CA5 0xA4
+#define CB11_CA6 0xA5
+#define CB11_CA7 0xA6
+#define CB11_CA8 0xA7
+#define CB11_CA9 0xA8
+#define CB11_CA10 0xA9
+#define CB11_CA11 0xAA
+#define CB11_CA12 0xAB
+#define CB11_CA13 0xAC
+#define CB11_CA14 0xAD
+#define CB11_CA15 0xAE
+#define CB11_CA16 0xAF
+
+#define CB12_CA1 0xB0
+#define CB12_CA2 0xB1
+#define CB12_CA3 0xB2
+#define CB12_CA4 0xB3
+#define CB12_CA5 0xB4
+#define CB12_CA6 0xB5
+#define CB12_CA7 0xB6
+#define CB12_CA8 0xB7
+#define CB12_CA9 0xB8
+#define CB12_CA10 0xB9
+#define CB12_CA11 0xBA
+#define CB12_CA12 0xBB
+#define CB12_CA13 0xBC
+#define CB12_CA14 0xBD
+#define CB12_CA15 0xBE
+#define CB12_CA16 0xBF
--- a/quantum/led_matrix/led_matrix_drivers.c
+++ b/quantum/led_matrix/led_matrix_drivers.c
@ -129,4 +129,12 @@ const led_matrix_driver_t led_matrix_driver = {
    .set_value_all = snled27351_set_value_all,
 };

+#elif defined(LED_MATRIX_SNLED27351_SPI)
+const led_matrix_driver_t led_matrix_driver = {
+    .init          = snled27351_init_drivers,
+    .flush         = snled27351_flush,
+    .set_value     = snled27351_set_value,
+    .set_value_all = snled27351_set_value_all,
+};
+
 #endif
--- a/quantum/led_matrix/led_matrix_drivers.h
+++ b/quantum/led_matrix/led_matrix_drivers.h
@ -31,6 +31,8 @@
 #    include "is31fl3746a-mono.h"
 #elif defined(LED_MATRIX_SNLED27351)
 #    include "snled27351-mono.h"
+#elif defined(LED_MATRIX_SNLED27351_SPI)
+#    include "snled27351-mono-spi.h"
 #endif

 typedef struct {
--- a/quantum/rgb_matrix/rgb_matrix_drivers.c
+++ b/quantum/rgb_matrix/rgb_matrix_drivers.c
@ -132,6 +132,14 @@ const rgb_matrix_driver_t rgb_matrix_driver = {
    .set_color_all = snled27351_set_color_all,
 };

+#elif defined(RGB_MATRIX_SNLED27351_SPI)
+const rgb_matrix_driver_t rgb_matrix_driver = {
+    .init          = snled27351_init_drivers,
+    .flush         = snled27351_flush,
+    .set_color     = snled27351_set_color,
+    .set_color_all = snled27351_set_color_all,
+};
+
 #elif defined(RGB_MATRIX_AW20216S)
 const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = aw20216s_init_drivers,
--- a/quantum/rgb_matrix/rgb_matrix_drivers.h
+++ b/quantum/rgb_matrix/rgb_matrix_drivers.h
@ -33,6 +33,8 @@
 #    include "is31fl3746a.h"
 #elif defined(RGB_MATRIX_SNLED27351)
 #    include "snled27351.h"
+#elif defined(RGB_MATRIX_SNLED27351_SPI)
+#    include "snled27351-spi.h"
 #elif defined(RGB_MATRIX_WS2812)
 #    include "ws2812.h"
 #endif