Generalise three-wire interface to generic SPI interface.

Update rtl8139 driver to instantiate an SPI interface with a three-wire
device attached.

1 files changed, 0 insertions, 102 deletions

diff --git a/src/include/gpxe/nvs/threewire.h b/src/include/gpxe/nvs/threewire.h
deleted file mode 100644
index a0bb2fd39..000000000
--- a/src/include/gpxe/nvs/threewire.h
+++ /dev/null
@@ -1,102 +0,0 @@
-#ifndef _GPXE_NVS_THREEWIRE_H
-#define _GPXE_NVS_THREEWIRE_H
-
-/** @file
- *
- * Three-wire serial interface
- *
- */
-
-struct threewire;
-
-/** Three-wire interface methods */
-struct threewire_operations {
-	/**
-	 * Set status of Chip Select line
-	 *
-	 * @v three	Three-wire interface
-	 * @v cs	New status for chip select line
-	 */
-	void ( * setcs ) ( struct threewire *three, int cs );
-	/**
-	 * Set status of Serial Clock line
-	 *
-	 * @v three	Three-wire interface
-	 * @v sk	New status for serial clock line
-	 */
-	void ( * setsk ) ( struct threewire *three, int sk );
-	/**
-	 * Set status of Data Input line
-	 *
-	 * @v three	Three-wire interface
-	 * @v di	New status for data input line
-	 */
-	void ( * setdi ) ( struct threewire *three, int di );
-	/**
-	 * Get status of Data Output line
-	 *
-	 * @v three	Three-wire interface
-	 * @ret do	Status of data output line
-	 */
-	int ( * getdo ) ( struct threewire *three );
-};
-
-/**
- * A three-wire serial interface
- *
- * This interface consists of a clock line (SK), data input (DI) and
- * data output (DO).  There is also a chip select line (CS) which is
- * integral to the operation of the device, but Atmel still calls it a
- * three-wire interface.
- *
- */
-struct threewire {
-	/** Interface methods */
-	struct threewire_operations *ops;
-	/** Address size (in bits) */
-	unsigned int adrsize;
-	/** Data size (in bits) */
-	unsigned int datasize;
-	/** Delay between SK transitions (in us) */
-	unsigned int udelay;
-};
-
-/**
- * Calculate read command for a specified address
- *
- * @v three	Three-wire interface
- * @v address	Address
- * @ret cmd	Command
- */
-static inline __attribute__ (( always_inline )) unsigned long
-threewire_cmd_read ( struct threewire *three, unsigned long address ) {
-	return ( ( 0x6 << three->adrsize ) | address );
-}
-
-/**
- * Calculate command length
- *
- * @v three	Three-wire interface
- * @ret len	Command length, in bits
- */
-static inline __attribute__ (( always_inline )) int
-threewire_cmd_len ( struct threewire *three ) {
-	return ( three->adrsize + 3 );
-}
-
-/* Constants for some standard parts */
-#define AT93C46_ORG8_ADRSIZE	7
-#define AT93C46_ORG8_DATASIZE	8
-#define AT93C46_ORG16_ADRSIZE	6
-#define AT93C46_ORG16_DATASIZE	16
-#define AT93C46_UDELAY		1
-#define AT93C56_ORG8_ADRSIZE	9
-#define AT93C56_ORG8_DATASIZE	8
-#define AT93C56_ORG16_ADRSIZE	8
-#define AT93C56_ORG16_DATASIZE	16
-#define AT93C56_UDELAY		1
-
-extern unsigned long threewire_read ( struct threewire *three,
-				      unsigned long address );
-
-#endif /* _GPXE_NVS_THREEWIRE_H */