diff --git a/dev/adc.c b/dev/adc.c
index 9f07bc3..8d64566 100644
--- a/dev/adc.c
+++ b/dev/adc.c
@@ -66,7 +66,7 @@ static int mr_adc_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_CONFIG:
+        case MR_CTRL_SET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -99,7 +99,7 @@ static int mr_adc_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_GET_CONFIG:
+        case MR_CTRL_GET_CONFIG:
         {
             if (args != MR_NULL)
             {
diff --git a/dev/dac.c b/dev/dac.c
index 632e913..7b8e2b5 100644
--- a/dev/dac.c
+++ b/dev/dac.c
@@ -66,7 +66,7 @@ static int mr_dac_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_CONFIG:
+        case MR_CTRL_SET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -93,7 +93,7 @@ static int mr_dac_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_GET_CONFIG:
+        case MR_CTRL_GET_CONFIG:
         {
             if (args != MR_NULL)
             {
diff --git a/dev/gpio.c b/dev/gpio.c
index e9c24c4..f776cdb 100644
--- a/dev/gpio.c
+++ b/dev/gpio.c
@@ -59,7 +59,7 @@ static int mr_gpio_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_CONFIG:
+        case MR_CTRL_SET_CONFIG:
         {
             if (args != MR_NULL)
             {
diff --git a/dev/spi.c b/dev/spi.c
index b767ce5..23e2dfc 100644
--- a/dev/spi.c
+++ b/dev/spi.c
@@ -223,7 +223,7 @@ static int mr_spi_bus_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_CONFIG:
+        case MR_CTRL_SET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -251,7 +251,7 @@ static int mr_spi_bus_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_GET_CONFIG:
+        case MR_CTRL_GET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -263,7 +263,7 @@ static int mr_spi_bus_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_SPI_TRANSFER:
+        case MR_CTRL_SPI_TRANSFER:
         {
             if (args != MR_NULL)
             {
@@ -371,7 +371,7 @@ static void spi_dev_cs_configure(struct mr_spi_dev *spi_dev, int state)
     {
         struct mr_gpio_config config = {0};
 
-        mr_dev_ioctl(desc, MR_IOCTL_SET_OFFSET, mr_make_local(int, spi_dev->cs_pin));
+        mr_dev_ioctl(desc, MR_CTRL_SET_OFFSET, mr_make_local(int, spi_dev->cs_pin));
 
         if (state == MR_ENABLE)
         {
@@ -388,12 +388,12 @@ static void spi_dev_cs_configure(struct mr_spi_dev *spi_dev, int state)
                     config.mode = MR_GPIO_MODE_INPUT_DOWN;
                 }
             }
-            mr_dev_ioctl(desc, MR_IOCTL_SET_CONFIG, &config);
+            mr_dev_ioctl(desc, MR_CTRL_SET_CONFIG, &config);
             mr_dev_write(desc, mr_make_local(uint8_t, spi_dev->cs_active), sizeof(uint8_t));
         } else
         {
             config.mode = MR_GPIO_MODE_NONE;
-            mr_dev_ioctl(desc, MR_IOCTL_SET_CONFIG, &config);
+            mr_dev_ioctl(desc, MR_CTRL_SET_CONFIG, &config);
         }
     }
 }
@@ -551,7 +551,7 @@ static int mr_spi_dev_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_CONFIG:
+        case MR_CTRL_SET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -585,7 +585,7 @@ static int mr_spi_dev_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_SET_RD_BUFSZ:
+        case MR_CTRL_SET_RD_BUFSZ:
         {
             if (args != MR_NULL)
             {
@@ -602,7 +602,7 @@ static int mr_spi_dev_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_GET_CONFIG:
+        case MR_CTRL_GET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -613,7 +613,7 @@ static int mr_spi_dev_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_GET_RD_BUFSZ:
+        case MR_CTRL_GET_RD_BUFSZ:
         {
             if (args != MR_NULL)
             {
@@ -623,7 +623,7 @@ static int mr_spi_dev_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_SPI_TRANSFER:
+        case MR_CTRL_SPI_TRANSFER:
         {
             if (args != MR_NULL)
             {
diff --git a/dev/spi.h b/dev/spi.h
index c57b63c..3642722 100644
--- a/dev/spi.h
+++ b/dev/spi.h
@@ -81,7 +81,7 @@ struct mr_spi_config
 /**
  * @brief SPI control command.
  */
-#define MR_IOCTL_SPI_TRANSFER           ((0x1|0x80) << 16)          /**< Transfer */
+#define MR_CTRL_SPI_TRANSFER            ((0x1|0x80) << 16)          /**< Transfer */
 
 /**
  * @brief SPI transfer structure.
diff --git a/dev/uart.c b/dev/uart.c
index 0bc4ba1..e460550 100644
--- a/dev/uart.c
+++ b/dev/uart.c
@@ -88,7 +88,7 @@ static int mr_uart_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_CONFIG:
+        case MR_CTRL_SET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -103,7 +103,7 @@ static int mr_uart_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_SET_RD_BUFSZ:
+        case MR_CTRL_SET_RD_BUFSZ:
         {
             if (args != MR_NULL)
             {
@@ -119,7 +119,7 @@ static int mr_uart_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_SET_WR_BUFSZ:
+        case MR_CTRL_SET_WR_BUFSZ:
         {
             if (args != MR_NULL)
             {
@@ -136,7 +136,7 @@ static int mr_uart_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_GET_CONFIG:
+        case MR_CTRL_GET_CONFIG:
         {
             if (args != MR_NULL)
             {
@@ -147,7 +147,7 @@ static int mr_uart_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_GET_RD_BUFSZ:
+        case MR_CTRL_GET_RD_BUFSZ:
         {
             if (args != MR_NULL)
             {
@@ -156,7 +156,7 @@ static int mr_uart_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_GET_WR_BUFSZ:
+        case MR_CTRL_GET_WR_BUFSZ:
         {
             if (args != MR_NULL)
             {
diff --git a/inc/mr_def.h b/inc/mr_def.h
index e8b1da3..fd8a73d 100644
--- a/inc/mr_def.h
+++ b/inc/mr_def.h
@@ -192,28 +192,28 @@ struct mr_dev;
 /**
  * @brief Descriptor control command.
  */
-#define MR_IOCTL_SET_OFFSET             ((0x1|0x8) << 28)           /**< Set offset */
-#define MR_IOCTL_GET_OFFSET             ((0x2|0x0) << 28)           /**< Get offset */
+#define MR_CTRL_SET_OFFSET              ((0x1|0x8) << 28)           /**< Set offset */
+#define MR_CTRL_GET_OFFSET              ((0x2|0x0) << 28)           /**< Get offset */
 
 /**
  * @brief Device control general command.
  */
-#define MR_IOCTL_SET_RD_CB              ((0x1|0x8) << 24)           /**< Set read callback */
-#define MR_IOCTL_SET_WR_CB              ((0x2|0x8) << 24)           /**< Set write callback */
-#define MR_IOCTL_SET_SLEEP              ((0x3|0x8) << 24)           /**< Set sleep */
-#define MR_IOCTL_SET_WAKEUP             ((0x4|0x8) << 24)           /**< Set wakeup */
-#define MR_IOCTL_GET_RD_CB              ((0x1|0x0) << 24)           /**< Get read callback */
-#define MR_IOCTL_GET_WR_CB              ((0x2|0x0) << 24)           /**< Get write callback */
+#define MR_CTRL_SET_RD_CB               ((0x1|0x8) << 24)           /**< Set read callback */
+#define MR_CTRL_SET_WR_CB               ((0x2|0x8) << 24)           /**< Set write callback */
+#define MR_CTRL_SET_SLEEP               ((0x3|0x8) << 24)           /**< Set sleep */
+#define MR_CTRL_SET_WAKEUP              ((0x4|0x8) << 24)           /**< Set wakeup */
+#define MR_CTRL_GET_RD_CB               ((0x1|0x0) << 24)           /**< Get read callback */
+#define MR_CTRL_GET_WR_CB               ((0x2|0x0) << 24)           /**< Get write callback */
 
 /**
  * @brief Device control command.
  */
-#define MR_IOCTL_SET_CONFIG             ((0x1|0x8) << 20)           /**< Set configuration */
-#define MR_IOCTL_SET_RD_BUFSZ           ((0x2|0x8) << 20)           /**< Set read buffer size */
-#define MR_IOCTL_SET_WR_BUFSZ           ((0x3|0x8) << 20)           /**< Set write buffer size */
-#define MR_IOCTL_GET_CONFIG             ((0x1|0x0) << 20)           /**< Get configuration */
-#define MR_IOCTL_GET_RD_BUFSZ           ((0x2|0x0) << 20)           /**< Get read buffer size */
-#define MR_IOCTL_GET_WR_BUFSZ           ((0x3|0x0) << 20)           /**< Get write buffer size */
+#define MR_CTRL_SET_CONFIG              ((0x1|0x8) << 20)           /**< Set configuration */
+#define MR_CTRL_SET_RD_BUFSZ            ((0x2|0x8) << 20)           /**< Set read buffer size */
+#define MR_CTRL_SET_WR_BUFSZ            ((0x3|0x8) << 20)           /**< Set write buffer size */
+#define MR_CTRL_GET_CONFIG              ((0x1|0x0) << 20)           /**< Get configuration */
+#define MR_CTRL_GET_RD_BUFSZ            ((0x2|0x0) << 20)           /**< Get read buffer size */
+#define MR_CTRL_GET_WR_BUFSZ            ((0x3|0x0) << 20)           /**< Get write buffer size */
 
 /**
  * @brief ISR event.
diff --git a/src/dev.c b/src/dev.c
index 141cfb9..a728146 100644
--- a/src/dev.c
+++ b/src/dev.c
@@ -293,20 +293,20 @@ static int dev_ioctl(struct mr_dev *dev, int desc, int off, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_RD_CB:
+        case MR_CTRL_SET_RD_CB:
         {
             dev->rd_cb.desc = desc;
             dev->rd_cb.cb = (int (*)(int desc, void *args))args;
             return MR_EOK;
         }
-        case MR_IOCTL_SET_WR_CB:
+        case MR_CTRL_SET_WR_CB:
         {
             dev->wr_cb.desc = desc;
             dev->wr_cb.cb = (int (*)(int desc, void *args))args;
             return MR_EOK;
         }
 
-        case MR_IOCTL_GET_RD_CB:
+        case MR_CTRL_GET_RD_CB:
         {
             if (args != MR_NULL)
             {
@@ -315,7 +315,7 @@ static int dev_ioctl(struct mr_dev *dev, int desc, int off, int cmd, void *args)
             }
             return MR_EINVAL;
         }
-        case MR_IOCTL_GET_WR_CB:
+        case MR_CTRL_GET_WR_CB:
         {
             if (args != MR_NULL)
             {
@@ -639,7 +639,7 @@ int mr_dev_ioctl(int desc, int cmd, void *args)
 
     switch (cmd)
     {
-        case MR_IOCTL_SET_OFFSET:
+        case MR_CTRL_SET_OFFSET:
         {
             if (args != MR_NULL)
             {
@@ -649,7 +649,7 @@ int mr_dev_ioctl(int desc, int cmd, void *args)
             return MR_EINVAL;
         }
 
-        case MR_IOCTL_GET_OFFSET:
+        case MR_CTRL_GET_OFFSET:
         {
             if (args != MR_NULL)
             {