is31fl3736: extract single-color API (#22133)

4 files changed, 446 insertions, 55 deletions

diff --git a/drivers/led/issi/is31fl3736-simple.c b/drivers/led/issi/is31fl3736-simple.c
new file mode 100644
index 0000000000..cd4038ac2c
--- /dev/null
+++ b/drivers/led/issi/is31fl3736-simple.c
@@ -0,0 +1,222 @@
+/* Copyright 2018 Jason Williams (Wilba)
+ * Copyright 2021 Doni Crosby
+ *
+ * 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 "is31fl3736-simple.h"
+#include <string.h>
+#include "i2c_master.h"
+#include "wait.h"
+
+#define IS31FL3736_COMMANDREGISTER 0xFD
+#define IS31FL3736_COMMANDREGISTER_WRITELOCK 0xFE
+#define IS31FL3736_INTERRUPTMASKREGISTER 0xF0
+#define IS31FL3736_INTERRUPTSTATUSREGISTER 0xF1
+
+#define IS31FL3736_PAGE_LEDCONTROL 0x00 // PG0
+#define IS31FL3736_PAGE_PWM 0x01        // PG1
+#define IS31FL3736_PAGE_AUTOBREATH 0x02 // PG2
+#define IS31FL3736_PAGE_FUNCTION 0x03   // PG3
+
+#define IS31FL3736_REG_CONFIGURATION 0x00 // PG3
+#define IS31FL3736_REG_GLOBALCURRENT 0x01 // PG3
+#define IS31FL3736_REG_RESET 0x11         // PG3
+#define IS31FL3736_REG_SWPULLUP 0x0F      // PG3
+#define IS31FL3736_REG_CSPULLUP 0x10      // PG3
+
+#ifndef IS31FL3736_I2C_TIMEOUT
+#    define IS31FL3736_I2C_TIMEOUT 100
+#endif
+
+#ifndef IS31FL3736_I2C_PERSISTENCE
+#    define IS31FL3736_I2C_PERSISTENCE 0
+#endif
+
+#ifndef IS31FL3736_PWM_FREQUENCY
+#    define IS31FL3736_PWM_FREQUENCY IS31FL3736_PWM_FREQUENCY_8K4_HZ // PFS - IS31FL3736B only
+#endif
+
+#ifndef IS31FL3736_SWPULLUP
+#    define IS31FL3736_SWPULLUP IS31FL3736_PUR_0R
+#endif
+
+#ifndef IS31FL3736_CSPULLUP
+#    define IS31FL3736_CSPULLUP IS31FL3736_PUR_0R
+#endif
+
+#ifndef IS31FL3736_GLOBALCURRENT
+#    define IS31FL3736_GLOBALCURRENT 0xFF
+#endif
+
+// Transfer buffer for TWITransmitData()
+uint8_t g_twi_transfer_buffer[20];
+
+// These buffers match the IS31FL3736 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 is31fl3736_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+uint8_t g_pwm_buffer[IS31FL3736_DRIVER_COUNT][192];
+bool    g_pwm_buffer_update_required[IS31FL3736_DRIVER_COUNT] = {false};
+
+uint8_t g_led_control_registers[IS31FL3736_DRIVER_COUNT][24]             = {0};
+bool    g_led_control_registers_update_required[IS31FL3736_DRIVER_COUNT] = {false};
+
+void is31fl3736_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
+    g_twi_transfer_buffer[0] = reg;
+    g_twi_transfer_buffer[1] = data;
+
+#if IS31FL3736_I2C_PERSISTENCE > 0
+    for (uint8_t i = 0; i < IS31FL3736_I2C_PERSISTENCE; i++) {
+        if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3736_I2C_TIMEOUT) == 0) break;
+    }
+#else
+    i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3736_I2C_TIMEOUT);
+#endif
+}
+
+void is31fl3736_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
+    // assumes PG1 is already selected
+
+    // transmit PWM registers in 12 transfers of 16 bytes
+    // g_twi_transfer_buffer[] is 20 bytes
+
+    // iterate over the pwm_buffer contents at 16 byte intervals
+    for (int i = 0; i < 192; i += 16) {
+        g_twi_transfer_buffer[0] = i;
+        // copy the data from i to i+15
+        // device will auto-increment register for data after the first byte
+        // thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer
+        memcpy(g_twi_transfer_buffer + 1, pwm_buffer + i, 16);
+
+#if IS31FL3736_I2C_PERSISTENCE > 0
+        for (uint8_t i = 0; i < IS31FL3736_I2C_PERSISTENCE; i++) {
+            if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3736_I2C_TIMEOUT) == 0) break;
+        }
+#else
+        i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3736_I2C_TIMEOUT);
+#endif
+    }
+}
+
+void is31fl3736_init(uint8_t addr) {
+    // In order to avoid the LEDs being driven with garbage data
+    // in the LED driver's PWM registers, shutdown is enabled last.
+    // Set up the mode and other settings, clear the PWM registers,
+    // then disable software shutdown.
+
+    // Unlock the command register.
+    is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+    // Select PG0
+    is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_LEDCONTROL);
+    // Turn off all LEDs.
+    for (int i = 0x00; i <= 0x17; i++) {
+        is31fl3736_write_register(addr, i, 0x00);
+    }
+
+    // Unlock the command register.
+    is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+    // Select PG1
+    is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_PWM);
+    // Set PWM on all LEDs to 0
+    // No need to setup Breath registers to PWM as that is the default.
+    for (int i = 0x00; i <= 0xBF; i++) {
+        is31fl3736_write_register(addr, i, 0x00);
+    }
+
+    // Unlock the command register.
+    is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+    // Select PG3
+    is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_FUNCTION);
+    // Set de-ghost pull-up resistors (SWx)
+    is31fl3736_write_register(addr, IS31FL3736_REG_SWPULLUP, IS31FL3736_SWPULLUP);
+    // Set de-ghost pull-down resistors (CSx)
+    is31fl3736_write_register(addr, IS31FL3736_REG_CSPULLUP, IS31FL3736_CSPULLUP);
+    // Set global current to maximum.
+    is31fl3736_write_register(addr, IS31FL3736_REG_GLOBALCURRENT, IS31FL3736_GLOBALCURRENT);
+    // Disable software shutdown.
+    is31fl3736_write_register(addr, IS31FL3736_REG_CONFIGURATION, ((IS31FL3736_PWM_FREQUENCY & 0b111) << 3) | 0x01);
+
+    // Wait 10ms to ensure the device has woken up.
+    wait_ms(10);
+}
+
+void is31fl3736_set_value(int index, uint8_t value) {
+    is31_led led;
+    if (index >= 0 && index < LED_MATRIX_LED_COUNT) {
+        memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
+
+        if (g_pwm_buffer[led.driver][led.v] == value) {
+            return;
+        }
+        g_pwm_buffer[led.driver][led.v]          = value;
+        g_pwm_buffer_update_required[led.driver] = true;
+    }
+}
+
+void is31fl3736_set_value_all(uint8_t value) {
+    for (int i = 0; i < LED_MATRIX_LED_COUNT; i++) {
+        is31fl3736_set_value(i, value);
+    }
+}
+
+void is31fl3736_set_led_control_register(uint8_t index, bool value) {
+    is31_led led;
+    memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
+
+    // The PWM register for a matrix position (0x00 to 0xBF) is interleaved, so:
+    // A1=0x00 A2=0x02 A3=0x04 A4=0x06 A5=0x08 A6=0x0A A7=0x0C A8=0x0E
+    // B1=0x10 B2=0x12 B3=0x14
+    // But also, the LED control registers (0x00 to 0x17) are also interleaved, so:
+    // A1-A4=0x00 A5-A8=0x01
+
+    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 is31fl3736_update_pwm_buffers(uint8_t addr, uint8_t index) {
+    if (g_pwm_buffer_update_required[index]) {
+        // Firstly we need to unlock the command register and select PG1
+        is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
+        is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_PWM);
+
+        is31fl3736_write_pwm_buffer(addr, g_pwm_buffer[index]);
+        g_pwm_buffer_update_required[index] = false;
+    }
+}
+
+void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index) {
+    if (g_led_control_registers_update_required[index]) {
+        // Firstly we need to unlock the command register and select PG0
+        is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
+        is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_LEDCONTROL);
+        for (int i = 0; i < 24; i++) {
+            is31fl3736_write_register(addr, i, g_led_control_registers[index][i]);
+        }
+        g_led_control_registers_update_required[index] = false;
+    }
+}
diff --git a/drivers/led/issi/is31fl3736-simple.h b/drivers/led/issi/is31fl3736-simple.h
new file mode 100644
index 0000000000..9f8056af5b
--- /dev/null
+++ b/drivers/led/issi/is31fl3736-simple.h
@@ -0,0 +1,215 @@
+/* Copyright 2018 Jason Williams (Wilba)
+ * Copyright 2021 Doni Crosby
+ *
+ * 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"
+
+// ======== DEPRECATED DEFINES - DO NOT USE ========
+#ifdef DRIVER_COUNT
+#    define IS31FL3736_DRIVER_COUNT DRIVER_COUNT
+#endif
+#ifdef ISSI_TIMEOUT
+#    define IS31FL3736_I2C_TIMEOUT ISSI_TIMEOUT
+#endif
+#ifdef ISSI_PERSISTENCE
+#    define IS31FL3736_I2C_PERSISTENCE ISSI_PERSISTENCE
+#endif
+#ifdef ISSI_SWPULLUP
+#    define IS31FL3736_SWPULLUP ISSI_SWPULLUP
+#endif
+#ifdef ISSI_CSPULLUP
+#    define IS31FL3736_CSPULLUP ISSI_CSPULLUP
+#endif
+#ifdef ISSI_GLOBALCURRENT
+#    define IS31FL3736_GLOBALCURRENT ISSI_GLOBALCURRENT
+#endif
+
+#define PUR_0R IS31FL3736_PUR_0R
+#define PUR_05KR IS31FL3736_PUR_05KR
+#define PUR_1KR IS31FL3736_PUR_1KR
+#define PUR_2KR IS31FL3736_PUR_2KR
+#define PUR_4KR IS31FL3736_PUR_4KR
+#define PUR_8KR IS31FL3736_PUR_8KR
+#define PUR_16KR IS31FL3736_PUR_16KR
+#define PUR_32KR IS31FL3736_PUR_32KR
+// ========
+
+#define IS31FL3736_I2C_ADDRESS_GND_GND 0x50
+#define IS31FL3736_I2C_ADDRESS_GND_SCL 0x51
+#define IS31FL3736_I2C_ADDRESS_GND_SDA 0x52
+#define IS31FL3736_I2C_ADDRESS_GND_VCC 0x53
+#define IS31FL3736_I2C_ADDRESS_SCL_GND 0x54
+#define IS31FL3736_I2C_ADDRESS_SCL_SCL 0x55
+#define IS31FL3736_I2C_ADDRESS_SCL_SDA 0x56
+#define IS31FL3736_I2C_ADDRESS_SCL_VCC 0x57
+#define IS31FL3736_I2C_ADDRESS_SDA_GND 0x58
+#define IS31FL3736_I2C_ADDRESS_SDA_SCL 0x59
+#define IS31FL3736_I2C_ADDRESS_SDA_SDA 0x5A
+#define IS31FL3736_I2C_ADDRESS_SDA_VCC 0x5B
+#define IS31FL3736_I2C_ADDRESS_VCC_GND 0x5C
+#define IS31FL3736_I2C_ADDRESS_VCC_SCL 0x5D
+#define IS31FL3736_I2C_ADDRESS_VCC_SDA 0x5E
+#define IS31FL3736_I2C_ADDRESS_VCC_VCC 0x5F
+
+typedef struct is31_led {
+    uint8_t driver : 2;
+    uint8_t v;
+} __attribute__((packed)) is31_led;
+
+extern const is31_led PROGMEM g_is31_leds[LED_MATRIX_LED_COUNT];
+
+void is31fl3736_init(uint8_t addr);
+void is31fl3736_write_register(uint8_t addr, uint8_t reg, uint8_t data);
+void is31fl3736_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer);
+
+void is31fl3736_set_value(int index, uint8_t value);
+void is31fl3736_set_value_all(uint8_t value);
+
+void is31fl3736_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 is31fl3736_update_pwm_buffers(uint8_t addr, uint8_t index);
+void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index);
+
+#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
+#define IS31FL3736_PUR_2KR 0x03  // 2.0k Ohm resistor
+#define IS31FL3736_PUR_4KR 0x04  // 4.0k Ohm resistor
+#define IS31FL3736_PUR_8KR 0x05  // 8.0k Ohm resistor
+#define IS31FL3736_PUR_16KR 0x06 // 16k Ohm resistor
+#define IS31FL3736_PUR_32KR 0x07 // 32k Ohm resistor
+
+#define IS31FL3736_PWM_FREQUENCY_8K4_HZ 0b000
+#define IS31FL3736_PWM_FREQUENCY_4K2_HZ 0b001
+#define IS31FL3736_PWM_FREQUENCY_26K7_HZ 0b010
+#define IS31FL3736_PWM_FREQUENCY_2K1_HZ 0b011
+#define IS31FL3736_PWM_FREQUENCY_1K05_HZ 0b100
+
+#define A_1 0x00
+#define A_2 0x02
+#define A_3 0x04
+#define A_4 0x06
+#define A_5 0x08
+#define A_6 0x0A
+#define A_7 0x0C
+#define A_8 0x0E
+
+#define B_1 0x10
+#define B_2 0x12
+#define B_3 0x14
+#define B_4 0x16
+#define B_5 0x18
+#define B_6 0x1A
+#define B_7 0x1C
+#define B_8 0x1E
+
+#define C_1 0x20
+#define C_2 0x22
+#define C_3 0x24
+#define C_4 0x26
+#define C_5 0x28
+#define C_6 0x2A
+#define C_7 0x2C
+#define C_8 0x2E
+
+#define D_1 0x30
+#define D_2 0x32
+#define D_3 0x34
+#define D_4 0x36
+#define D_5 0x38
+#define D_6 0x3A
+#define D_7 0x3C
+#define D_8 0x3E
+
+#define E_1 0x40
+#define E_2 0x42
+#define E_3 0x44
+#define E_4 0x46
+#define E_5 0x48
+#define E_6 0x4A
+#define E_7 0x4C
+#define E_8 0x4E
+
+#define F_1 0x50
+#define F_2 0x52
+#define F_3 0x54
+#define F_4 0x56
+#define F_5 0x58
+#define F_6 0x5A
+#define F_7 0x5C
+#define F_8 0x5E
+
+#define G_1 0x60
+#define G_2 0x62
+#define G_3 0x64
+#define G_4 0x66
+#define G_5 0x68
+#define G_6 0x6A
+#define G_7 0x6C
+#define G_8 0x6E
+
+#define H_1 0x70
+#define H_2 0x72
+#define H_3 0x74
+#define H_4 0x76
+#define H_5 0x78
+#define H_6 0x7A
+#define H_7 0x7C
+#define H_8 0x7E
+
+#define I_1 0x80
+#define I_2 0x82
+#define I_3 0x84
+#define I_4 0x86
+#define I_5 0x88
+#define I_6 0x8A
+#define I_7 0x8C
+#define I_8 0x8E
+
+#define J_1 0x90
+#define J_2 0x92
+#define J_3 0x94
+#define J_4 0x96
+#define J_5 0x98
+#define J_6 0x9A
+#define J_7 0x9C
+#define J_8 0x9E
+
+#define K_1 0xA0
+#define K_2 0xA2
+#define K_3 0xA4
+#define K_4 0xA6
+#define K_5 0xA8
+#define K_6 0xAA
+#define K_7 0xAC
+#define K_8 0xAE
+
+#define L_1 0xB0
+#define L_2 0xB2
+#define L_3 0xB4
+#define L_4 0xB6
+#define L_5 0xB8
+#define L_6 0xBA
+#define L_7 0xBC
+#define L_8 0xBE
diff --git a/drivers/led/issi/is31fl3736.c b/drivers/led/issi/is31fl3736.c
index 7f50411f1f..23ff0637a6 100644
--- a/drivers/led/issi/is31fl3736.c
+++ b/drivers/led/issi/is31fl3736.c
@@ -72,8 +72,8 @@ uint8_t g_twi_transfer_buffer[20];
 uint8_t g_pwm_buffer[IS31FL3736_DRIVER_COUNT][192];
 bool    g_pwm_buffer_update_required[IS31FL3736_DRIVER_COUNT] = {false};
 
-uint8_t g_led_control_registers[IS31FL3736_DRIVER_COUNT][24] = {{0}, {0}};
-bool    g_led_control_registers_update_required              = false;
+uint8_t g_led_control_registers[IS31FL3736_DRIVER_COUNT][24]             = {0};
+bool    g_led_control_registers_update_required[IS31FL3736_DRIVER_COUNT] = {false};
 
 void is31fl3736_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
     g_twi_transfer_buffer[0] = reg;
@@ -182,18 +182,11 @@ void is31fl3736_set_led_control_register(uint8_t index, bool red, bool green, bo
     is31_led led;
     memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
 
-    // IS31FL3733
-    // The PWM register for a matrix position (0x00 to 0xBF) can be
-    // divided by 8 to get the LED control register (0x00 to 0x17),
-    // then mod 8 to get the bit position within that register.
-
-    // IS31FL3736
     // The PWM register for a matrix position (0x00 to 0xBF) is interleaved, so:
     // A1=0x00 A2=0x02 A3=0x04 A4=0x06 A5=0x08 A6=0x0A A7=0x0C A8=0x0E
     // B1=0x10 B2=0x12 B3=0x14
     // But also, the LED control registers (0x00 to 0x17) are also interleaved, so:
     // A1-A4=0x00 A5-A8=0x01
-    // So, the same math applies.
 
     uint8_t control_register_r = led.r / 8;
     uint8_t control_register_g = led.g / 8;
@@ -219,41 +212,7 @@ void is31fl3736_set_led_control_register(uint8_t index, bool red, bool green, bo
         g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
     }
 
-    g_led_control_registers_update_required = true;
-}
-
-void is31fl3736_mono_set_brightness(int index, uint8_t value) {
-    if (index >= 0 && index < 96) {
-        // Index in range 0..95 -> A1..A8, B1..B8, etc.
-        // Map index 0..95 to registers 0x00..0xBE (interleaved)
-        uint8_t pwm_register            = index * 2;
-        g_pwm_buffer[0][pwm_register]   = value;
-        g_pwm_buffer_update_required[0] = true;
-    }
-}
-
-void is31fl3736_mono_set_brightness_all(uint8_t value) {
-    for (int i = 0; i < 96; i++) {
-        is31fl3736_mono_set_brightness(i, value);
-    }
-}
-
-void is31fl3736_mono_set_led_control_register(uint8_t index, bool enabled) {
-    // Index in range 0..95 -> A1..A8, B1..B8, etc.
-
-    // Map index 0..95 to registers 0x00..0xBE (interleaved)
-    uint8_t pwm_register = index * 2;
-    // Map register 0x00..0xBE (interleaved) into control register and bit
-    uint8_t control_register = pwm_register / 8;
-    uint8_t bit              = pwm_register % 8;
-
-    if (enabled) {
-        g_led_control_registers[0][control_register] |= (1 << bit);
-    } else {
-        g_led_control_registers[0][control_register] &= ~(1 << bit);
-    }
-
-    g_led_control_registers_update_required = true;
+    g_led_control_registers_update_required[led.driver] = true;
 }
 
 void is31fl3736_update_pwm_buffers(uint8_t addr, uint8_t index) {
@@ -267,15 +226,14 @@ void is31fl3736_update_pwm_buffers(uint8_t addr, uint8_t index) {
     }
 }
 
-void is31fl3736_update_led_control_registers(uint8_t addr1, uint8_t addr2) {
-    if (g_led_control_registers_update_required) {
+void is31fl3736_update_led_control_registers(uint8_t addr, uint8_t index) {
+    if (g_led_control_registers_update_required[index]) {
         // Firstly we need to unlock the command register and select PG0
-        is31fl3736_write_register(addr1, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
-        is31fl3736_write_register(addr1, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_LEDCONTROL);
+        is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER_WRITELOCK, 0xC5);
+        is31fl3736_write_register(addr, IS31FL3736_COMMANDREGISTER, IS31FL3736_PAGE_LEDCONTROL);
         for (int i = 0; i < 24; i++) {
-            is31fl3736_write_register(addr1, i, g_led_control_registers[0][i]);
-            // is31fl3736_write_register(addr2, i, g_led_control_registers[1][i]);
+            is31fl3736_write_register(addr, i, g_led_control_registers[index][i]);
         }
-        g_led_control_registers_update_required = false;
+        g_led_control_registers_update_required[index] = false;
     }
 }
diff --git a/drivers/led/issi/is31fl3736.h b/drivers/led/issi/is31fl3736.h
index baf200f8ad..f263b131fd 100644
--- a/drivers/led/issi/is31fl3736.h
+++ b/drivers/led/issi/is31fl3736.h
@@ -86,10 +86,6 @@ void is31fl3736_set_color_all(uint8_t red, uint8_t green, uint8_t blue);
 
 void is31fl3736_set_led_control_register(uint8_t index, bool red, bool green, bool blue);
 
-void is31fl3736_mono_set_brightness(int index, uint8_t value);
-void is31fl3736_mono_set_brightness_all(uint8_t value);
-void is31fl3736_mono_set_led_control_register(uint8_t index, bool enabled);
-
 // This should not be called from an interrupt
 // (eg. from a timer interrupt).
 // Call this while idle (in between matrix scans).