Add `_flush()` functions to LED drivers (#22308)

28 files changed, 204 insertions, 0 deletions

diff --git a/drivers/led/aw20216s.c b/drivers/led/aw20216s.c
index 078a694d30..988cb6e9f6 100644
--- a/drivers/led/aw20216s.c
+++ b/drivers/led/aw20216s.c
@@ -166,3 +166,10 @@ void aw20216s_update_pwm_buffers(pin_t cs_pin, uint8_t index) {
     }
     g_pwm_buffer_update_required[index] = false;
 }
+
+void aw20216s_flush(void) {
+    aw20216s_update_pwm_buffers(AW20216S_CS_PIN_1, 0);
+#if defined(AW20216S_CS_PIN_2)
+    aw20216s_update_pwm_buffers(AW20216S_CS_PIN_2, 1);
+#endif
+}
diff --git a/drivers/led/aw20216s.h b/drivers/led/aw20216s.h
index f8c0efcc6f..8abc2ee4af 100644
--- a/drivers/led/aw20216s.h
+++ b/drivers/led/aw20216s.h
@@ -68,6 +68,8 @@ void aw20216s_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
 void aw20216s_set_color_all(uint8_t red, uint8_t green, uint8_t blue);
 void aw20216s_update_pwm_buffers(pin_t cs_pin, uint8_t index);
 
+void aw20216s_flush(void);
+
 #define CS1_SW1 0x00
 #define CS2_SW1 0x01
 #define CS3_SW1 0x02
diff --git a/drivers/led/issi/is31fl3731-simple.c b/drivers/led/issi/is31fl3731-simple.c
index f9ad703ced..adf2ccfca0 100644
--- a/drivers/led/issi/is31fl3731-simple.c
+++ b/drivers/led/issi/is31fl3731-simple.c
@@ -211,3 +211,16 @@ void is31fl3731_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3731_flush(void) {
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3731_I2C_ADDRESS_2)
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3731_I2C_ADDRESS_3)
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3731_I2C_ADDRESS_4)
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3731-simple.h b/drivers/led/issi/is31fl3731-simple.h
index 3233fdc0d7..69d38e74da 100644
--- a/drivers/led/issi/is31fl3731-simple.h
+++ b/drivers/led/issi/is31fl3731-simple.h
@@ -80,6 +80,8 @@ void is31fl3731_set_led_control_register(uint8_t index, bool value);
 void is31fl3731_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3731_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3731_flush(void);
+
 #define C1_1 0x24
 #define C1_2 0x25
 #define C1_3 0x26
diff --git a/drivers/led/issi/is31fl3731.c b/drivers/led/issi/is31fl3731.c
index a30e8fcbc2..767c0da0d9 100644
--- a/drivers/led/issi/is31fl3731.c
+++ b/drivers/led/issi/is31fl3731.c
@@ -223,3 +223,16 @@ void is31fl3731_update_led_control_registers(uint8_t addr, uint8_t index) {
     }
     g_led_control_registers_update_required[index] = false;
 }
+
+void is31fl3731_flush(void) {
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3731_I2C_ADDRESS_2)
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3731_I2C_ADDRESS_3)
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3731_I2C_ADDRESS_4)
+    is31fl3731_update_pwm_buffers(IS31FL3731_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3731.h b/drivers/led/issi/is31fl3731.h
index fff91bfdbf..cab6d40c5a 100644
--- a/drivers/led/issi/is31fl3731.h
+++ b/drivers/led/issi/is31fl3731.h
@@ -81,6 +81,8 @@ void is31fl3731_set_led_control_register(uint8_t index, bool red, bool green, bo
 void is31fl3731_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3731_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3731_flush(void);
+
 #define C1_1 0x24
 #define C1_2 0x25
 #define C1_3 0x26
diff --git a/drivers/led/issi/is31fl3733-simple.c b/drivers/led/issi/is31fl3733-simple.c
index e94b4c7d78..dbbf86a8f5 100644
--- a/drivers/led/issi/is31fl3733-simple.c
+++ b/drivers/led/issi/is31fl3733-simple.c
@@ -233,3 +233,16 @@ void is31fl3733_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3733_flush(void) {
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3733_I2C_ADDRESS_2)
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3733_I2C_ADDRESS_3)
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3733_I2C_ADDRESS_4)
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3733-simple.h b/drivers/led/issi/is31fl3733-simple.h
index 8041a7f0f3..b8a4530260 100644
--- a/drivers/led/issi/is31fl3733-simple.h
+++ b/drivers/led/issi/is31fl3733-simple.h
@@ -99,6 +99,8 @@ void is31fl3733_set_led_control_register(uint8_t index, bool value);
 void is31fl3733_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3733_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3733_flush(void);
+
 #define IS31FL3733_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3733_PUR_05KR 0x02 // 0.5k Ohm resistor in t_NOL
 #define IS31FL3733_PUR_3KR 0x03  // 3.0k Ohm resistor on all the time
diff --git a/drivers/led/issi/is31fl3733.c b/drivers/led/issi/is31fl3733.c
index efc5929587..35ec96a55a 100644
--- a/drivers/led/issi/is31fl3733.c
+++ b/drivers/led/issi/is31fl3733.c
@@ -248,3 +248,16 @@ void is31fl3733_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3733_flush(void) {
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3733_I2C_ADDRESS_2)
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3733_I2C_ADDRESS_3)
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3733_I2C_ADDRESS_4)
+    is31fl3733_update_pwm_buffers(IS31FL3733_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3733.h b/drivers/led/issi/is31fl3733.h
index e56d04f66f..2a02576979 100644
--- a/drivers/led/issi/is31fl3733.h
+++ b/drivers/led/issi/is31fl3733.h
@@ -124,6 +124,8 @@ void is31fl3733_set_led_control_register(uint8_t index, bool red, bool green, bo
 void is31fl3733_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3733_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3733_flush(void);
+
 #define IS31FL3733_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3733_PUR_05KR 0x02 // 0.5k Ohm resistor in t_NOL
 #define IS31FL3733_PUR_3KR 0x03  // 3.0k Ohm resistor on all the time
diff --git a/drivers/led/issi/is31fl3736-simple.c b/drivers/led/issi/is31fl3736-simple.c
index f3f202efb2..d8262c3416 100644
--- a/drivers/led/issi/is31fl3736-simple.c
+++ b/drivers/led/issi/is31fl3736-simple.c
@@ -220,3 +220,16 @@ void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3736_flush(void) {
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3736_I2C_ADDRESS_2)
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3736_I2C_ADDRESS_3)
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3736_I2C_ADDRESS_4)
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3736-simple.h b/drivers/led/issi/is31fl3736-simple.h
index d5525e460d..4f9dee47b0 100644
--- a/drivers/led/issi/is31fl3736-simple.h
+++ b/drivers/led/issi/is31fl3736-simple.h
@@ -94,6 +94,8 @@ void is31fl3736_set_led_control_register(uint8_t index, bool value);
 void is31fl3736_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3736_flush(void);
+
 #define IS31FL3736_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3736_PUR_05KR 0x01 // 0.5k Ohm resistor
 #define IS31FL3736_PUR_1KR 0x02  // 1.0k Ohm resistor
diff --git a/drivers/led/issi/is31fl3736.c b/drivers/led/issi/is31fl3736.c
index 03f50873df..4edf1b04c8 100644
--- a/drivers/led/issi/is31fl3736.c
+++ b/drivers/led/issi/is31fl3736.c
@@ -237,3 +237,16 @@ void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3736_flush(void) {
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3736_I2C_ADDRESS_2)
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3736_I2C_ADDRESS_3)
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3736_I2C_ADDRESS_4)
+    is31fl3736_update_pwm_buffers(IS31FL3736_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3736.h b/drivers/led/issi/is31fl3736.h
index 91312384ae..cd3505b0b6 100644
--- a/drivers/led/issi/is31fl3736.h
+++ b/drivers/led/issi/is31fl3736.h
@@ -108,6 +108,8 @@ void is31fl3736_set_led_control_register(uint8_t index, bool red, bool green, bo
 void is31fl3736_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3736_flush(void);
+
 #define IS31FL3736_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3736_PUR_05KR 0x01 // 0.5k Ohm resistor
 #define IS31FL3736_PUR_1KR 0x02  // 1.0k Ohm resistor
diff --git a/drivers/led/issi/is31fl3737-simple.c b/drivers/led/issi/is31fl3737-simple.c
index 3db7b7ed33..7a4263d9af 100644
--- a/drivers/led/issi/is31fl3737-simple.c
+++ b/drivers/led/issi/is31fl3737-simple.c
@@ -217,3 +217,16 @@ void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3737_flush(void) {
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3737_I2C_ADDRESS_2)
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3737_I2C_ADDRESS_3)
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3737_I2C_ADDRESS_4)
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3737-simple.h b/drivers/led/issi/is31fl3737-simple.h
index 0f4e0d014b..106127e737 100644
--- a/drivers/led/issi/is31fl3737-simple.h
+++ b/drivers/led/issi/is31fl3737-simple.h
@@ -84,6 +84,8 @@ void is31fl3737_set_led_control_register(uint8_t index, bool value);
 void is31fl3737_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3737_flush(void);
+
 #define IS31FL3737_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3737_PUR_05KR 0x01 // 0.5k Ohm resistor in t_NOL
 #define IS31FL3737_PUR_1KR 0x02  // 1.0k Ohm resistor in t_NOL
diff --git a/drivers/led/issi/is31fl3737.c b/drivers/led/issi/is31fl3737.c
index c2af75bbb8..d769bb9707 100644
--- a/drivers/led/issi/is31fl3737.c
+++ b/drivers/led/issi/is31fl3737.c
@@ -233,3 +233,16 @@ void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index) {
         g_led_control_registers_update_required[index] = false;
     }
 }
+
+void is31fl3737_flush(void) {
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3737_I2C_ADDRESS_2)
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3737_I2C_ADDRESS_3)
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3737_I2C_ADDRESS_4)
+    is31fl3737_update_pwm_buffers(IS31FL3737_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3737.h b/drivers/led/issi/is31fl3737.h
index a2a81640f6..bb4afbcccb 100644
--- a/drivers/led/issi/is31fl3737.h
+++ b/drivers/led/issi/is31fl3737.h
@@ -101,6 +101,8 @@ void is31fl3737_set_led_control_register(uint8_t index, bool red, bool green, bo
 void is31fl3737_update_pwm_buffers(uint8_t addr, uint8_t index);
 void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void is31fl3737_flush(void);
+
 #define IS31FL3737_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3737_PUR_05KR 0x01 // 0.5k Ohm resistor in t_NOL
 #define IS31FL3737_PUR_1KR 0x02  // 1.0k Ohm resistor in t_NOL
diff --git a/drivers/led/issi/is31fl3741-simple.c b/drivers/led/issi/is31fl3741-simple.c
index 93c02fbc26..c7335866ec 100644
--- a/drivers/led/issi/is31fl3741-simple.c
+++ b/drivers/led/issi/is31fl3741-simple.c
@@ -251,3 +251,16 @@ void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t valu
 
     g_scaling_registers_update_required[pled->driver] = true;
 }
+
+void is31fl3741_flush(void) {
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3741_I2C_ADDRESS_2)
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3741_I2C_ADDRESS_3)
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3741_I2C_ADDRESS_4)
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3741-simple.h b/drivers/led/issi/is31fl3741-simple.h
index 46c058c644..29e6dc261d 100644
--- a/drivers/led/issi/is31fl3741-simple.h
+++ b/drivers/led/issi/is31fl3741-simple.h
@@ -87,6 +87,8 @@ void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t valu
 
 void is31fl3741_set_pwm_buffer(const is31fl3741_led *pled, uint8_t value);
 
+void is31fl3741_flush(void);
+
 #define IS31FL3741_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3741_PUR_05KR 0x01 // 0.5k Ohm resistor
 #define IS31FL3741_PUR_1KR 0x02  // 1.0k Ohm resistor
diff --git a/drivers/led/issi/is31fl3741.c b/drivers/led/issi/is31fl3741.c
index 47c15a11ca..5e4ed711ca 100644
--- a/drivers/led/issi/is31fl3741.c
+++ b/drivers/led/issi/is31fl3741.c
@@ -269,3 +269,16 @@ void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t red,
 
     g_scaling_registers_update_required[pled->driver] = true;
 }
+
+void is31fl3741_flush(void) {
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_1, 0);
+#if defined(IS31FL3741_I2C_ADDRESS_2)
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_2, 1);
+#    if defined(IS31FL3741_I2C_ADDRESS_3)
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_3, 2);
+#        if defined(IS31FL3741_I2C_ADDRESS_4)
+    is31fl3741_update_pwm_buffers(IS31FL3741_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
diff --git a/drivers/led/issi/is31fl3741.h b/drivers/led/issi/is31fl3741.h
index 30fab248bc..aedbe89b93 100644
--- a/drivers/led/issi/is31fl3741.h
+++ b/drivers/led/issi/is31fl3741.h
@@ -104,6 +104,8 @@ void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t red,
 
 void is31fl3741_set_pwm_buffer(const is31fl3741_led_t *pled, uint8_t red, uint8_t green, uint8_t blue);
 
+void is31fl3741_flush(void);
+
 #define IS31FL3741_PUR_0R 0x00   // No PUR resistor
 #define IS31FL3741_PUR_05KR 0x01 // 0.5k Ohm resistor
 #define IS31FL3741_PUR_1KR 0x02  // 1.0k Ohm resistor
diff --git a/drivers/led/issi/is31flcommon.c b/drivers/led/issi/is31flcommon.c
index 4b78947ada..850f23c831 100644
--- a/drivers/led/issi/is31flcommon.c
+++ b/drivers/led/issi/is31flcommon.c
@@ -174,6 +174,19 @@ void IS31FL_common_update_scaling_register(uint8_t addr, uint8_t index) {
     }
 }
 
+void IS31FL_common_flush(void) {
+    IS31FL_common_update_pwm_register(DRIVER_ADDR_1, 0);
+#if defined(DRIVER_ADDR_2)
+    IS31FL_common_update_pwm_register(DRIVER_ADDR_2, 1);
+#    if defined(DRIVER_ADDR_3)
+    IS31FL_common_update_pwm_register(DRIVER_ADDR_3, 2);
+#        if defined(DRIVER_ADDR_4)
+    IS31FL_common_update_pwm_register(DRIVER_ADDR_4, 3);
+#        endif
+#    endif
+#endif
+}
+
 #ifdef RGB_MATRIX_ENABLE
 // Colour is set by adjusting PWM register
 void IS31FL_RGB_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
diff --git a/drivers/led/issi/is31flcommon.h b/drivers/led/issi/is31flcommon.h
index 93533e14de..c380f2a8d6 100644
--- a/drivers/led/issi/is31flcommon.h
+++ b/drivers/led/issi/is31flcommon.h
@@ -67,6 +67,8 @@ void IS31FL_common_init(uint8_t addr, uint8_t ssr);
 void IS31FL_common_update_pwm_register(uint8_t addr, uint8_t index);
 void IS31FL_common_update_scaling_register(uint8_t addr, uint8_t index);
 
+void IS31FL_common_flush(void);
+
 #ifdef RGB_MATRIX_ENABLE
 // RGB Matrix Specific scripts
 void IS31FL_RGB_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
diff --git a/drivers/led/snled27351-simple.c b/drivers/led/snled27351-simple.c
index 499769555c..882fe4e8b4 100644
--- a/drivers/led/snled27351-simple.c
+++ b/drivers/led/snled27351-simple.c
@@ -203,6 +203,19 @@ void snled27351_update_led_control_registers(uint8_t addr, uint8_t index) {
     g_led_control_registers_update_required[index] = false;
 }
 
+void snled27351_flush(void) {
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_1, 0);
+#if defined(SNLED27351_I2C_ADDRESS_2)
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_2, 1);
+#    if defined(SNLED27351_I2C_ADDRESS_3)
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_3, 2);
+#        if defined(SNLED27351_I2C_ADDRESS_4)
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
+
 void snled27351_sw_return_normal(uint8_t addr) {
     // Select to function page
     snled27351_write_register(addr, SNLED27351_REG_CONFIGURE_CMD_PAGE, SNLED27351_FUNCTION_PAGE);
diff --git a/drivers/led/snled27351-simple.h b/drivers/led/snled27351-simple.h
index ff71b44b91..999b70f891 100644
--- a/drivers/led/snled27351-simple.h
+++ b/drivers/led/snled27351-simple.h
@@ -82,6 +82,8 @@ void snled27351_set_led_control_register(uint8_t index, bool value);
 void snled27351_update_pwm_buffers(uint8_t addr, uint8_t index);
 void snled27351_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void snled27351_flush(void);
+
 void snled27351_sw_return_normal(uint8_t addr);
 void snled27351_sw_shutdown(uint8_t addr);
 
diff --git a/drivers/led/snled27351.c b/drivers/led/snled27351.c
index 1ca691b30f..198b190dac 100644
--- a/drivers/led/snled27351.c
+++ b/drivers/led/snled27351.c
@@ -218,6 +218,19 @@ void snled27351_update_led_control_registers(uint8_t addr, uint8_t index) {
     g_led_control_registers_update_required[index] = false;
 }
 
+void snled27351_flush(void) {
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_1, 0);
+#if defined(SNLED27351_I2C_ADDRESS_2)
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_2, 1);
+#    if defined(SNLED27351_I2C_ADDRESS_3)
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_3, 2);
+#        if defined(SNLED27351_I2C_ADDRESS_4)
+    snled27351_update_pwm_buffers(SNLED27351_I2C_ADDRESS_4, 3);
+#        endif
+#    endif
+#endif
+}
+
 void snled27351_sw_return_normal(uint8_t addr) {
     // Select to function page
     snled27351_write_register(addr, SNLED27351_REG_CONFIGURE_CMD_PAGE, SNLED27351_FUNCTION_PAGE);
diff --git a/drivers/led/snled27351.h b/drivers/led/snled27351.h
index 67047c8921..59d56855f3 100644
--- a/drivers/led/snled27351.h
+++ b/drivers/led/snled27351.h
@@ -96,6 +96,8 @@ void snled27351_set_led_control_register(uint8_t index, bool red, bool green, bo
 void snled27351_update_pwm_buffers(uint8_t addr, uint8_t index);
 void snled27351_update_led_control_registers(uint8_t addr, uint8_t index);
 
+void snled27351_flush(void);
+
 void snled27351_sw_return_normal(uint8_t addr);
 void snled27351_sw_shutdown(uint8_t addr);