1 files changed, 0 insertions, 140 deletions
diff --git a/gpxe/src/drivers/nvs/spi.c b/gpxe/src/drivers/nvs/spi.c
deleted file mode 100644
index 793080a0..00000000
--- a/gpxe/src/drivers/nvs/spi.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stddef.h>
-#include <errno.h>
-#include <unistd.h>
-#include <gpxe/spi.h>
-
-/** @file
- *
- * SPI devices
- *
- */
-
-/**
- * Munge SPI device address into command
- *
- * @v command		SPI command
- * @v address		Address
- * @v munge_address	Device requires address munging
- * @ret command		Actual SPI command to use
- *
- * Some devices with 9-bit addresses (e.g. AT25040A EEPROM) use bit 3
- * of the command byte as address bit A8, rather than having a
- * two-byte address.  This function takes care of generating the
- * appropriate command.
- */
-static inline unsigned int spi_command ( unsigned int command,
-					 unsigned int address,
-					 int munge_address ) {
-	return ( command | ( ( ( address >> 8 ) & munge_address ) << 3 ) );
-}
-
-/**
- * Wait for SPI device to complete operation
- *
- * @v device		SPI device
- * @ret rc		Return status code
- */
-static int spi_wait ( struct spi_device *device ) {
-	struct spi_bus *bus = device->bus;
-	uint8_t status;
-	int i;
-	int rc;
-
-	for ( i = 0 ; i < 50 ; i++ ) {
-		udelay ( 20 );
-		if ( ( rc = bus->rw ( bus, device, SPI_RDSR, -1, NULL,
-				      &status, sizeof ( status ) ) ) != 0 )
-			return rc;
-		if ( ! ( status & SPI_STATUS_NRDY ) )
-			return 0;
-	}
-	DBG ( "SPI %p timed out\n", device );
-	return -ETIMEDOUT;
-}
-
-/**
- * Read data from SPI device
- *
- * @v nvs		NVS device
- * @v address		Address from which to read
- * @v data		Data buffer
- * @v len		Length of data buffer
- * @ret rc		Return status code
- */
-int spi_read ( struct nvs_device *nvs, unsigned int address,
-	       void *data, size_t len ) {
-	struct spi_device *device = nvs_to_spi ( nvs );
-	struct spi_bus *bus = device->bus;
-	unsigned int command = spi_command ( SPI_READ, address,
-					     device->munge_address );
-	int rc;
-
-	DBG ( "SPI %p reading %zd bytes from %#04x\n", device, len, address );
-	if ( ( rc = bus->rw ( bus, device, command, address,
-			      NULL, data, len ) ) != 0 ) {
-		DBG ( "SPI %p failed to read data from device\n", device );
-		return rc;
-	}
-
-	return 0;
-}
-
-/**
- * Write data to SPI device
- *
- * @v nvs		NVS device
- * @v address		Address from which to read
- * @v data		Data buffer
- * @v len		Length of data buffer
- * @ret rc		Return status code
- */
-int spi_write ( struct nvs_device *nvs, unsigned int address,
-		const void *data, size_t len ) {
-	struct spi_device *device = nvs_to_spi ( nvs );
-	struct spi_bus *bus = device->bus;
-	unsigned int command = spi_command ( SPI_WRITE, address,
-					     device->munge_address );
-	int rc;
-
-	DBG ( "SPI %p writing %zd bytes to %#04x\n", device, len, address );
-
-	if ( ( rc = bus->rw ( bus, device, SPI_WREN, -1,
-			      NULL, NULL, 0 ) ) != 0 ) {
-		DBG ( "SPI %p failed to write-enable device\n", device );
-		return rc;
-	}
-
-	if ( ( rc = bus->rw ( bus, device, command, address,
-			      data, NULL, len ) ) != 0 ) {
-		DBG ( "SPI %p failed to write data to device\n", device );
-		return rc;
-	}
-	
-	if ( ( rc = spi_wait ( device ) ) != 0 ) {
-		DBG ( "SPI %p failed to complete write operation\n", device );
-		return rc;
-	}
-
-	return 0;
-}
-