eeprom_93cx6: Add data direction control.
Some devices need to know if the data is to be output or read, so add a
data direction into the eeprom structure to tell the driver whether the
data line should be driven.
The user in this case is the Micrel KS8851 which has a direction
control for the EEPROM data line and thus needs to know whether
to drive it (writing) or to tristate it for receiving.
Change-Id: Ic8bd7e13ce9bde423001ca23f3de02e76e1dbdaf
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/misc/eeprom/eeprom_93cx6.c b/drivers/misc/eeprom/eeprom_93cx6.c
index 7b33de9..a6037af 100644
--- a/drivers/misc/eeprom/eeprom_93cx6.c
+++ b/drivers/misc/eeprom/eeprom_93cx6.c
@@ -63,6 +63,7 @@
eeprom->reg_data_out = 0;
eeprom->reg_data_clock = 0;
eeprom->reg_chip_select = 1;
+ eeprom->drive_data = 1;
eeprom->register_write(eeprom);
/*
@@ -101,6 +102,7 @@
*/
eeprom->reg_data_in = 0;
eeprom->reg_data_out = 0;
+ eeprom->drive_data = 1;
/*
* Start writing all bits.
@@ -140,6 +142,7 @@
*/
eeprom->reg_data_in = 0;
eeprom->reg_data_out = 0;
+ eeprom->drive_data = 0;
/*
* Start reading all bits.