aboutsummaryrefslogtreecommitdiff
path: root/include/linux/eeprom_93cx6.h
diff options
context:
space:
mode:
authorIvo van Doorn <ivdoorn@gmail.com>2007-05-11 15:59:40 -0400
committerJeff Garzik <jeff@garzik.org>2007-07-08 22:16:36 -0400
commit9467d64b0e88763914c01f71ddf591b166c4f526 (patch)
tree594dca21215cff58b17189ed50071faa154b2f64 /include/linux/eeprom_93cx6.h
parent7dcca30a32aadb0520417521b0c44f42d09fe05c (diff)
downloadlinux-linaro-stable-9467d64b0e88763914c01f71ddf591b166c4f526.tar.gz
[PATCH] Add 93cx6 eeprom library
This patch adds a library for reading from 93cx6 eeproms. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/linux/eeprom_93cx6.h')
-rw-r--r--include/linux/eeprom_93cx6.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/include/linux/eeprom_93cx6.h b/include/linux/eeprom_93cx6.h
new file mode 100644
index 000000000000..d774b7778c91
--- /dev/null
+++ b/include/linux/eeprom_93cx6.h
@@ -0,0 +1,72 @@
+/*
+ Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
+ <http://rt2x00.serialmonkey.com>
+
+ 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.
+ */
+
+/*
+ Module: eeprom_93cx6
+ Abstract: EEPROM reader datastructures for 93cx6 chipsets.
+ Supported chipsets: 93c46 & 93c66.
+ */
+
+/*
+ * EEPROM operation defines.
+ */
+#define PCI_EEPROM_WIDTH_93C46 6
+#define PCI_EEPROM_WIDTH_93C66 8
+#define PCI_EEPROM_WIDTH_OPCODE 3
+#define PCI_EEPROM_WRITE_OPCODE 0x05
+#define PCI_EEPROM_READ_OPCODE 0x06
+#define PCI_EEPROM_EWDS_OPCODE 0x10
+#define PCI_EEPROM_EWEN_OPCODE 0x13
+
+/**
+ * struct eeprom_93cx6 - control structure for setting the commands
+ * for reading the eeprom data.
+ * @data: private pointer for the driver.
+ * @register_read(struct eeprom_93cx6 *eeprom): handler to
+ * read the eeprom register, this function should set all reg_* fields.
+ * @register_write(struct eeprom_93cx6 *eeprom): handler to
+ * write to the eeprom register by using all reg_* fields.
+ * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
+ * @reg_data_in: register field to indicate data input
+ * @reg_data_out: register field to indicate data output
+ * @reg_data_clock: register field to set the data clock
+ * @reg_chip_select: register field to set the chip select
+ *
+ * This structure is used for the communication between the driver
+ * and the eeprom_93cx6 handlers for reading the eeprom.
+ */
+struct eeprom_93cx6 {
+ void *data;
+
+ void (*register_read)(struct eeprom_93cx6 *eeprom);
+ void (*register_write)(struct eeprom_93cx6 *eeprom);
+
+ int width;
+
+ char reg_data_in;
+ char reg_data_out;
+ char reg_data_clock;
+ char reg_chip_select;
+};
+
+extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
+ const u8 word, u16 *data);
+extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
+ const u8 word, __le16 *data, const u16 words);