X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmtd%2Fspi%2Feeprom_m95xxx.c;h=a019939b8b926f8d0181160ffb6741bd27c167e4;hb=c4ba0d82d329791c3f0456d88e93032b11e48535;hp=59f80e39ff22e3d97415c7f915a7022e8fcb689e;hpb=3ac374c0f0b7d856f1a43317a286f2079106bd6a;p=u-boot

diff --git a/drivers/mtd/spi/eeprom_m95xxx.c b/drivers/mtd/spi/eeprom_m95xxx.c
index 59f80e39ff..a019939b8b 100644
--- a/drivers/mtd/spi/eeprom_m95xxx.c
+++ b/drivers/mtd/spi/eeprom_m95xxx.c
@@ -2,23 +2,7 @@
  * Copyright (C) 2009
  * Albin Tonnerre, Free Electrons <albin.tonnerre@free-electrons.com>
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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 (at your option) 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
@@ -37,30 +21,37 @@
 #define CONFIG_DEFAULT_SPI_MODE SPI_MODE_0
 #endif
 
-ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len)
+#ifndef CONFIG_SYS_SPI_WRITE_TOUT
+#define CONFIG_SYS_SPI_WRITE_TOUT (5 * CONFIG_SYS_HZ)
+#endif
+
+ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len)
 {
 	struct spi_slave *slave;
 	u8 cmd = SPI_EEPROM_READ;
 
 	slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, 1, 1000000,
 			CONFIG_DEFAULT_SPI_MODE);
+	if (!slave)
+		return 0;
+
 	spi_claim_bus(slave);
 
 	/* command */
-	if(spi_xfer(slave, 8, &cmd, NULL, SPI_XFER_BEGIN))
+	if (spi_xfer(slave, 8, &cmd, NULL, SPI_XFER_BEGIN))
 		return -1;
 
 	/*
-	 * if alen == 3, addr[0] is the block number, we never use it here. All we
-	 * need are the lower 16 bits
+	 * if alen == 3, addr[0] is the block number, we never use it here.
+	 * All we need are the lower 16 bits.
 	 */
 	if (alen == 3)
 		addr++;
 
 	/* address, and data */
-	if(spi_xfer(slave, 16, addr, NULL, 0))
+	if (spi_xfer(slave, 16, addr, NULL, 0))
 		return -1;
-	if(spi_xfer(slave, 8 * len, NULL, buffer, SPI_XFER_END))
+	if (spi_xfer(slave, 8 * len, NULL, buffer, SPI_XFER_END))
 		return -1;
 
 	spi_release_bus(slave);
@@ -68,18 +59,21 @@ ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len)
 	return len;
 }
 
-ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len)
+ssize_t spi_write(uchar *addr, int alen, uchar *buffer, int len)
 {
 	struct spi_slave *slave;
-	int i;
 	char buf[3];
+	ulong start;
 
 	slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, 1, 1000000,
 			CONFIG_DEFAULT_SPI_MODE);
+	if (!slave)
+		return 0;
+
 	spi_claim_bus(slave);
 
 	buf[0] = SPI_EEPROM_WREN;
-	if(spi_xfer(slave, 8, buf, NULL, SPI_XFER_BEGIN | SPI_XFER_END))
+	if (spi_xfer(slave, 8, buf, NULL, SPI_XFER_BEGIN | SPI_XFER_END))
 		return -1;
 
 	buf[0] = SPI_EEPROM_WRITE;
@@ -92,12 +86,12 @@ ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len)
 
 	memcpy(buf + 1, addr, alen);
 	/* command + addr, then data */
-	if(spi_xfer(slave, 24, buf, NULL, SPI_XFER_BEGIN))
+	if (spi_xfer(slave, 24, buf, NULL, SPI_XFER_BEGIN))
 		return -1;
-	if(spi_xfer(slave, len * 8, buffer, NULL, SPI_XFER_END))
+	if (spi_xfer(slave, len * 8, buffer, NULL, SPI_XFER_END))
 		return -1;
 
-	reset_timer_masked();
+	start = get_timer(0);
 	do {
 		buf[0] = SPI_EEPROM_RDSR;
 		buf[1] = 0;
@@ -106,10 +100,10 @@ ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len)
 		if (!(buf[1] & 1))
 			break;
 
-	} while (get_timer_masked() < CONFIG_SYS_SPI_WRITE_TOUT);
+	} while (get_timer(start) < CONFIG_SYS_SPI_WRITE_TOUT);
 
 	if (buf[1] & 1)
-		printf ("*** spi_write: Time out while writing!\n");
+		printf("*** spi_write: Timeout while writing!\n");
 
 	spi_release_bus(slave);
 	spi_free_slave(slave);