===================================================================
@@ -70,6 +70,7 @@ static void eeprom_93cx6_startup(struct
eeprom->reg_data_out = 0;
eeprom->reg_data_clock = 0;
eeprom->reg_chip_select = 1;
+ eeprom->drive_data = 1;
eeprom->register_write(eeprom);
/*
@@ -108,6 +109,7 @@ static void eeprom_93cx6_write_bits(stru
*/
eeprom->reg_data_in = 0;
eeprom->reg_data_out = 0;
+ eeprom->drive_data = 1;
/*
* Start writing all bits.
@@ -147,6 +149,7 @@ static void eeprom_93cx6_read_bits(struc
*/
eeprom->reg_data_in = 0;
eeprom->reg_data_out = 0;
+ eeprom->drive_data = 0;
/*
* Start reading all bits.
===================================================================
@@ -45,6 +45,7 @@
* @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
+ * @drive_data: Set if we're driving the data line.
* @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
@@ -61,6 +62,7 @@ struct eeprom_93cx6 {
int width;
+ char drive_data;
char reg_data_in;
char reg_data_out;
char reg_data_clock;
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. 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> -- drivers/misc/eeprom/eeprom_93cx6.c | 3 +++ include/linux/eeprom_93cx6.h | 2 ++ 2 files changed, 5 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html