# HG changeset patch
# User Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
# Date 1689381358 14400
#      Fri Jul 14 20:35:58 2023 -0400
# Node ID d5b2c4c9ce69b960582cc1ec9600a35b2c34d179
# Parent  8a2071a21cc65db45f1f2181825b3d76b67dd7ac
arch: move SPI setup code into a generic helper

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

diff --git a/arch/atmega48p_spi.h b/arch/atmega48p_spi.h
--- a/arch/atmega48p_spi.h
+++ b/arch/atmega48p_spi.h
@@ -47,15 +47,16 @@
 	SPI_BITORDER_LSB = REG_SPCR_DORD_LSB,
 };
 
-static inline void spi_init_master(enum spi_mode mode,
-				   enum spi_clock clock,
-				   enum spi_bitorder bitorder,
-				   bool interrupt)
+static inline void __spi_init(enum spi_mode mode,
+			      enum spi_clock clock,
+			      enum spi_bitorder bitorder,
+			      bool interrupt,
+			      bool master)
 {
 	uint8_t spcr;
 	uint8_t spsr;
 
-	spcr = REG_SPCR_SPE | REG_SPCR_MSTR;
+	spcr = REG_SPCR_SPE;
 	spsr = 0;
 
 	switch (mode) {
@@ -100,12 +101,23 @@
 	if (interrupt)
 		spcr |= REG_SPCR_SPIE;
 
+	if (master)
+		spcr |= REG_SPCR_MSTR;
+
 	spcr |= bitorder;
 
 	mmregs->spcr = spcr;
 	mmregs->spsr = spsr;
 }
 
+static inline void spi_init_master(enum spi_mode mode,
+				   enum spi_clock clock,
+				   enum spi_bitorder bitorder,
+				   bool interrupt)
+{
+	__spi_init(mode, clock, bitorder, interrupt, true);
+}
+
 /* transmit a single byte, CS is left up to the caller */
 static inline void spi_tx_byte(uint8_t byte)
 {