diff --git a/drivers/gpio/mcp23018.c b/drivers/gpio/mcp23018.c
index 3eca4f9d34c..0791db08dda 100644
--- a/drivers/gpio/mcp23018.c
+++ b/drivers/gpio/mcp23018.c
@@ -74,20 +74,20 @@ bool mcp23018_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB) {
     return true;
 }
 
-bool mcp23018_readPins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* out) {
+bool mcp23018_read_pins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* out) {
     uint8_t addr = SLAVE_TO_ADDR(slave_addr);
     uint8_t cmd  = port ? CMD_GPIOB : CMD_GPIOA;
 
     i2c_status_t ret = i2c_read_register(addr, cmd, out, sizeof(uint8_t), TIMEOUT);
     if (ret != I2C_STATUS_SUCCESS) {
-        dprintf("mcp23018_readPins::FAILED::%u\n", ret);
+        dprintf("mcp23018_read_pins::FAILED::%u\n", ret);
         return false;
     }
 
     return true;
 }
 
-bool mcp23018_readPins_all(uint8_t slave_addr, uint16_t* out) {
+bool mcp23018_read_pins_all(uint8_t slave_addr, uint16_t* out) {
     uint8_t addr = SLAVE_TO_ADDR(slave_addr);
 
     typedef union {
@@ -99,7 +99,7 @@ bool mcp23018_readPins_all(uint8_t slave_addr, uint16_t* out) {
 
     i2c_status_t ret = i2c_read_register(addr, CMD_GPIOA, &data.u8[0], sizeof(data), TIMEOUT);
     if (ret != I2C_STATUS_SUCCESS) {
-        dprintf("mcp23018_readPins::FAILED::%u\n", ret);
+        dprintf("mcp23018_read_pins_all::FAILED::%u\n", ret);
         return false;
     }
 
diff --git a/drivers/gpio/mcp23018.h b/drivers/gpio/mcp23018.h
index e7c2730dd15..98c818fb8d5 100644
--- a/drivers/gpio/mcp23018.h
+++ b/drivers/gpio/mcp23018.h
@@ -55,11 +55,16 @@ bool mcp23018_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB);
 /**
  * Read state of a given port
  */
-bool mcp23018_readPins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* ret);
+bool mcp23018_read_pins(uint8_t slave_addr, mcp23018_port_t port, uint8_t* ret);
 
 /**
  * Read state of both ports sequentially
  *
  *  - slightly faster than multiple readPins
  */
-bool mcp23018_readPins_all(uint8_t slave_addr, uint16_t* ret);
+bool mcp23018_read_pins_all(uint8_t slave_addr, uint16_t* ret);
+
+// DEPRECATED - DO NOT USE
+
+#define mcp23018_readPins mcp23018_read_pins
+#define mcp23018_readPins_all mcp23018_read_pins_all
diff --git a/drivers/gpio/pca9505.c b/drivers/gpio/pca9505.c
index 5617a14a8b1..d1adc61a237 100644
--- a/drivers/gpio/pca9505.c
+++ b/drivers/gpio/pca9505.c
@@ -133,7 +133,7 @@ bool pca9505_set_output(uint8_t slave_addr, pca9505_port_t port, uint8_t conf) {
     return true;
 }
 
-bool pca9505_readPins(uint8_t slave_addr, pca9505_port_t port, uint8_t* out) {
+bool pca9505_read_pins(uint8_t slave_addr, pca9505_port_t port, uint8_t* out) {
     uint8_t addr = SLAVE_TO_ADDR(slave_addr);
     uint8_t cmd  = 0;
     switch (port) {
@@ -156,7 +156,7 @@ bool pca9505_readPins(uint8_t slave_addr, pca9505_port_t port, uint8_t* out) {
 
     i2c_status_t ret = i2c_read_register(addr, cmd, out, sizeof(uint8_t), TIMEOUT);
     if (ret != I2C_STATUS_SUCCESS) {
-        print("pca9505_readPins::FAILED\n");
+        print("pca9505_read_pins::FAILED\n");
         return false;
     }
 
diff --git a/drivers/gpio/pca9505.h b/drivers/gpio/pca9505.h
index 732ddb88ead..0cec8610d94 100644
--- a/drivers/gpio/pca9505.h
+++ b/drivers/gpio/pca9505.h
@@ -64,4 +64,8 @@ bool pca9505_set_output(uint8_t slave_addr, pca9505_port_t port, uint8_t conf);
 /**
  * Read state of a given port
  */
-bool pca9505_readPins(uint8_t slave_addr, pca9505_port_t port, uint8_t* ret);
+bool pca9505_read_pins(uint8_t slave_addr, pca9505_port_t port, uint8_t* ret);
+
+// DEPRECATED - DO NOT USE
+
+#define pca9505_readPins pca9505_read_pins
diff --git a/drivers/gpio/pca9555.c b/drivers/gpio/pca9555.c
index 0fc30099ac3..28b74e1a700 100644
--- a/drivers/gpio/pca9555.c
+++ b/drivers/gpio/pca9555.c
@@ -70,20 +70,20 @@ bool pca9555_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB) {
     return true;
 }
 
-bool pca9555_readPins(uint8_t slave_addr, pca9555_port_t port, uint8_t* out) {
+bool pca9555_read_pins(uint8_t slave_addr, pca9555_port_t port, uint8_t* out) {
     uint8_t addr = SLAVE_TO_ADDR(slave_addr);
     uint8_t cmd  = port ? CMD_INPUT_1 : CMD_INPUT_0;
 
     i2c_status_t ret = i2c_read_register(addr, cmd, out, sizeof(uint8_t), TIMEOUT);
     if (ret != I2C_STATUS_SUCCESS) {
-        print("pca9555_readPins::FAILED\n");
+        print("pca9555_read_pins::FAILED\n");
         return false;
     }
 
     return true;
 }
 
-bool pca9555_readPins_all(uint8_t slave_addr, uint16_t* out) {
+bool pca9555_read_pins_all(uint8_t slave_addr, uint16_t* out) {
     uint8_t addr = SLAVE_TO_ADDR(slave_addr);
 
     typedef union {
@@ -95,7 +95,7 @@ bool pca9555_readPins_all(uint8_t slave_addr, uint16_t* out) {
 
     i2c_status_t ret = i2c_read_register(addr, CMD_INPUT_0, &data.u8[0], sizeof(data), TIMEOUT);
     if (ret != I2C_STATUS_SUCCESS) {
-        print("pca9555_readPins_all::FAILED\n");
+        print("pca9555_read_pins_all::FAILED\n");
         return false;
     }
 
diff --git a/drivers/gpio/pca9555.h b/drivers/gpio/pca9555.h
index 6362ab68aeb..f089022e84f 100644
--- a/drivers/gpio/pca9555.h
+++ b/drivers/gpio/pca9555.h
@@ -78,11 +78,16 @@ bool pca9555_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB);
 /**
  * Read state of a given port
  */
-bool pca9555_readPins(uint8_t slave_addr, pca9555_port_t port, uint8_t* ret);
+bool pca9555_read_pins(uint8_t slave_addr, pca9555_port_t port, uint8_t* ret);
 
 /**
  * Read state of both ports sequentially
  *
  *  - slightly faster than multiple readPins
  */
-bool pca9555_readPins_all(uint8_t slave_addr, uint16_t* ret);
+bool pca9555_read_pins_all(uint8_t slave_addr, uint16_t* ret);
+
+// DEPRECATED - DO NOT USE
+
+#define pca9555_readPins pca9555_read_pins
+#define pca9555_readPins_all pca9555_read_pins_all
diff --git a/keyboards/geistmaschine/macropod/matrix.c b/keyboards/geistmaschine/macropod/matrix.c
index 60b1dafe637..ebc10e2e5ad 100644
--- a/keyboards/geistmaschine/macropod/matrix.c
+++ b/keyboards/geistmaschine/macropod/matrix.c
@@ -55,7 +55,7 @@ bool matrix_scan_custom(matrix_row_t current_matrix[]) {
             pca9555_setup();
         }
         // Read the entire port into this byte, 1 = not pressed, 0 = pressed
-        bool ret = pca9555_readPins(IC1, PCA9555_PORT0, &pin_states);
+        bool ret = pca9555_read_pins(IC1, PCA9555_PORT0, &pin_states);
 
         // Update state
         if (ret) {
diff --git a/keyboards/ktec/ergodone/matrix.c b/keyboards/ktec/ergodone/matrix.c
index cb845db1bc7..a9a517f2f12 100644
--- a/keyboards/ktec/ergodone/matrix.c
+++ b/keyboards/ktec/ergodone/matrix.c
@@ -49,7 +49,7 @@ static matrix_row_t expander_read_row(void) {
     }
 
     uint8_t ret = 0xFF;
-    mcp23018_errors += !mcp23018_readPins(I2C_ADDR, mcp23018_PORTA, &ret);
+    mcp23018_errors += !mcp23018_read_pins(I2C_ADDR, mcp23018_PORTA, &ret);
 
     ret = bitrev(~ret);
     ret = ((ret & 0b11111000) >> 1) | (ret & 0b00000011);
diff --git a/keyboards/mechwild/sugarglider/matrix.c b/keyboards/mechwild/sugarglider/matrix.c
index c76a8345d3b..2fa384ed227 100644
--- a/keyboards/mechwild/sugarglider/matrix.c
+++ b/keyboards/mechwild/sugarglider/matrix.c
@@ -38,7 +38,7 @@ static matrix_row_t read_cols(void) {
     }
 
     uint8_t ret = 0xFF;                                                         // sets all to 1
-    mcp23018_errors += !mcp23018_readPins(I2C_ADDR, mcp23018_PORTB, &ret);      // will update with values 0 = pulled down by connection, 1 = pulled up by pullup resistors
+    mcp23018_errors += !mcp23018_read_pins(I2C_ADDR, mcp23018_PORTB, &ret);      // will update with values 0 = pulled down by connection, 1 = pulled up by pullup resistors
 
     return (~ret) & 0b00111111; // Clears out the two row bits in the B buffer.
 }
diff --git a/keyboards/moon/matrix.c b/keyboards/moon/matrix.c
index bb46e1b576f..8c9b6214dba 100644
--- a/keyboards/moon/matrix.c
+++ b/keyboards/moon/matrix.c
@@ -145,8 +145,8 @@ static void select_row(uint8_t row) {
 static uint16_t read_cols(void) {
   uint8_t state_1 = 0;
   uint8_t state_2 = 0;
-  pca9555_readPins(IC2, PCA9555_PORT0, &state_1);
-  pca9555_readPins(IC2, PCA9555_PORT1, &state_2);
+  pca9555_read_pins(IC2, PCA9555_PORT0, &state_1);
+  pca9555_read_pins(IC2, PCA9555_PORT1, &state_2);
 
   uint16_t state = (((uint16_t)state_1 & PORT0_COLS_MASK) << 3) | (((uint16_t)state_2 & PORT1_COLS_MASK));
 
diff --git a/keyboards/switchplate/southpaw_65/matrix.c b/keyboards/switchplate/southpaw_65/matrix.c
index e24dcef8535..a7008e9c7d0 100644
--- a/keyboards/switchplate/southpaw_65/matrix.c
+++ b/keyboards/switchplate/southpaw_65/matrix.c
@@ -54,9 +54,9 @@ static uint32_t read_cols(void) {
     uint8_t state_1 = 0;
     uint8_t state_2 = 0;
     uint8_t state_3 = 0;
-    pca9555_readPins(IC1, PCA9555_PORT1, &state_1);
-    pca9555_readPins(IC2, PCA9555_PORT0, &state_2);
-    pca9555_readPins(IC2, PCA9555_PORT1, &state_3);
+    pca9555_read_pins(IC1, PCA9555_PORT1, &state_1);
+    pca9555_read_pins(IC2, PCA9555_PORT0, &state_2);
+    pca9555_read_pins(IC2, PCA9555_PORT1, &state_3);
 
     uint32_t state = ((((uint32_t)state_3 & 0b01111111) << 12) | ((uint32_t)state_2 << 4) | (((uint32_t)state_1 & 0b11110000) >> 4));
     return ~state;
diff --git a/keyboards/viktus/sp111/matrix.c b/keyboards/viktus/sp111/matrix.c
index 33b232dca77..a39365cef60 100644
--- a/keyboards/viktus/sp111/matrix.c
+++ b/keyboards/viktus/sp111/matrix.c
@@ -117,7 +117,7 @@ static void select_row_MCP23018(uint8_t row) {
 
 static uint16_t read_cols_MCP23018(void) {
     uint16_t tmp = 0xFFFF;
-    mcp23018_errors += !mcp23018_readPins_all(I2C_ADDR, &tmp);
+    mcp23018_errors += !mcp23018_read_pins_all(I2C_ADDR, &tmp);
 
     uint16_t state = ((tmp & 0b11111111) << 2) | ((tmp & 0b0110000000000000) >> 13);
     return (~state) & 0b1111111111;
diff --git a/keyboards/xiudi/xd84/matrix.c b/keyboards/xiudi/xd84/matrix.c
index 04128561eef..d92ac83b4a7 100644
--- a/keyboards/xiudi/xd84/matrix.c
+++ b/keyboards/xiudi/xd84/matrix.c
@@ -51,10 +51,10 @@ static void select_row(uint8_t row) {
 }
 
 static uint16_t read_cols(void) {
-    // uint16_t state_1 = pca9555_readPins(IC2, PCA9555_PORT0);
-    // uint16_t state_2 = pca9555_readPins(IC2, PCA9555_PORT1);
+    // uint16_t state_1 = pca9555_read_pins(IC2, PCA9555_PORT0);
+    // uint16_t state_2 = pca9555_read_pins(IC2, PCA9555_PORT1);
     uint16_t state = 0;
-    pca9555_readPins_all(IC2, &state);
+    pca9555_read_pins_all(IC2, &state);
 
     // For the XD84 all cols are on the same IC and mapped sequentially
     // while this technically gives 16 column reads,
diff --git a/keyboards/xiudi/xd96/matrix.c b/keyboards/xiudi/xd96/matrix.c
index beef7fae126..641202ca2c9 100644
--- a/keyboards/xiudi/xd96/matrix.c
+++ b/keyboards/xiudi/xd96/matrix.c
@@ -53,9 +53,9 @@ static uint32_t read_cols(void) {
   uint8_t state_1 = 0;
   uint8_t state_2 = 0;
   uint8_t state_3 = 0;
-  pca9555_readPins(IC2, PCA9555_PORT0, &state_1);
-  pca9555_readPins(IC2, PCA9555_PORT1, &state_2);
-  pca9555_readPins(IC1, PCA9555_PORT1, &state_3);
+  pca9555_read_pins(IC2, PCA9555_PORT0, &state_1);
+  pca9555_read_pins(IC2, PCA9555_PORT1, &state_2);
+  pca9555_read_pins(IC1, PCA9555_PORT1, &state_3);
 
   // For the XD96 the pins are mapped to port expanders as follows:
   //   all 8 pins port 0 IC2, first 6 pins port 1 IC2, first 4 pins port 1 IC1