diff --git a/firmware/ice40-riscv/icE1usb/e1.c b/firmware/ice40-riscv/icE1usb/e1.c
index f6a41c9..ed3e13f 100644
--- a/firmware/ice40-riscv/icE1usb/e1.c
+++ b/firmware/ice40-riscv/icE1usb/e1.c
@@ -300,15 +300,6 @@
 }
 
 void
-e1_tx_config(int port, uint16_t cr)
-{
-	volatile struct e1_core *e1_regs = _get_regs(port);
-	struct e1_state *e1 = _get_state(port);
-	e1->tx.cr = (e1->tx.cr & ~TXCR_PERMITTED) | (cr & TXCR_PERMITTED);
-	e1_regs->tx.csr = e1->tx.cr;
-}
-
-void
 e1_rx_config(int port, uint16_t cr)
 {
 	volatile struct e1_core *e1_regs = _get_regs(port);
@@ -317,6 +308,15 @@
 	e1_regs->rx.csr = e1->rx.cr;
 }
 
+void
+e1_tx_config(int port, uint16_t cr)
+{
+	volatile struct e1_core *e1_regs = _get_regs(port);
+	struct e1_state *e1 = _get_state(port);
+	e1->tx.cr = (e1->tx.cr & ~TXCR_PERMITTED) | (cr & TXCR_PERMITTED);
+	e1_regs->tx.csr = e1->tx.cr;
+}
+
 unsigned int
 e1_rx_need_data(int port, unsigned int usb_addr, unsigned int max_frames, unsigned int *pos)
 {
@@ -409,19 +409,19 @@
 }
 
 unsigned int
-e1_tx_level(int port)
-{
-	struct e1_state *e1 = _get_state(port);
-	return e1f_valid_frames(&e1->tx.fifo);
-}
-
-unsigned int
 e1_rx_level(int port)
 {
 	struct e1_state *e1 = _get_state(port);
 	return e1f_valid_frames(&e1->rx.fifo);
 }
 
+unsigned int
+e1_tx_level(int port)
+{
+	struct e1_state *e1 = _get_state(port);
+	return e1f_valid_frames(&e1->tx.fifo);
+}
+
 const struct e1_error_count *
 e1_get_error_count(int port)
 {