1 files changed, 0 insertions, 131 deletions
diff --git a/gpxe/src/drivers/nvs/threewire.c b/gpxe/src/drivers/nvs/threewire.c
deleted file mode 100644
index 8e521389..00000000
--- a/gpxe/src/drivers/nvs/threewire.c
+++ /dev/null
@@ -1,131 +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 <string.h>
-#include <assert.h>
-#include <unistd.h>
-#include <gpxe/threewire.h>
-
-/** @file
- *
- * Three-wire serial devices
- *
- */
-
-/**
- * Read data from three-wire 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 threewire_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;
-	int rc;
-
-	assert ( bus->mode == SPI_MODE_THREEWIRE );
-
-	DBGC ( device, "3wire %p reading %zd bytes at %04x\n",
-	       device, len, address );
-
-	if ( ( rc = bus->rw ( bus, device, THREEWIRE_READ, address,
-			      NULL, data, len ) ) != 0 ) {
-		DBGC ( device, "3wire %p could not read: %s\n",
-		       device, strerror ( rc ) );
-		return rc;
-	}
-
-	return 0;
-}
-
-/**
- * Write data to three-wire 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 threewire_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;
-	int rc;
-
-	assert ( bus->mode == SPI_MODE_THREEWIRE );
-
-	DBGC ( device, "3wire %p writing %zd bytes at %04x\n",
-	       device, len, address );
-
-	/* Enable device for writing */
-	if ( ( rc = bus->rw ( bus, device, THREEWIRE_EWEN,
-			      THREEWIRE_EWEN_ADDRESS, NULL, NULL, 0 ) ) != 0 ){
-		DBGC ( device, "3wire %p could not enable writing: %s\n",
-		       device, strerror ( rc ) );
-		return rc;
-	}
-
-	/* Write data */
-	if ( ( rc = bus->rw ( bus, device, THREEWIRE_WRITE, address,
-			      data, NULL, len ) ) != 0 ) {
-		DBGC ( device, "3wire %p could not write: %s\n",
-		       device, strerror ( rc ) );
-		return rc;
-	}
-
-	/* Our model of an SPI bus doesn't provide a mechanism for
-	 * "assert CS, wait for MISO to become high, so just wait for
-	 * long enough to ensure that the write has completed.
-	 */
-	mdelay ( THREEWIRE_WRITE_MDELAY );
-
-	return 0;
-}
-
-/**
- * Autodetect device address length
- *
- * @v device		SPI device
- * @ret rc		Return status code
- */
-int threewire_detect_address_len ( struct spi_device *device ) {
-	struct nvs_device *nvs = &device->nvs;
-	int rc;
-
-	DBGC ( device, "3wire %p autodetecting address length\n", device );
-
-	device->address_len = SPI_AUTODETECT_ADDRESS_LEN;
-	if ( ( rc = threewire_read ( nvs, 0, NULL,
-				     ( 1 << nvs->word_len_log2 ) ) ) != 0 ) {
-		DBGC ( device, "3wire %p could not autodetect address "
-		       "length: %s\n", device, strerror ( rc ) );
-		return rc;
-	}
-
-	DBGC ( device, "3wire %p autodetected address length %d\n",
-	       device, device->address_len );
-	return 0;
-}