* Patches by David Müller, 31 Jan 2003:

  - minimal setup for CardBus bridges
  - add EEPROM read/write support in the CS8900 driver
  - add support for the builtin I2C controller in the Samsung s3c24x0 chips
  - add support for  MPL's VCMA9 (Samsung s3c2410 based) board

* Patch by Steven Scholz, 04 Feb 2003:
  add support for RTC DS1307

* Patch by Reinhard Meyer, 5 Feb 2003:
  fix PLPRCR/SCCR init sequence on 8xx to allow for
  changes of EBDF by software

* Patch by Vladimir Gurevich, 07 Feb 2003:
  "API-compatibility patch" for 4xx I2C driver

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/cs8900.c b/drivers/cs8900.c
index 7165d60..224ab95 100644
--- a/drivers/cs8900.c
+++ b/drivers/cs8900.c
@@ -272,6 +272,44 @@ retry:
 	return 0;
 }
 
+static void cs8900_e2prom_ready(void)
+{
+	while(get_reg(PP_SelfST) & SI_BUSY);
+}
+
+/***********************************************************/
+/* read a 16-bit word out of the EEPROM                    */
+/***********************************************************/
+
+int cs8900_e2prom_read(unsigned char addr, unsigned short *value)
+{
+	cs8900_e2prom_ready();
+	put_reg(PP_EECMD, EEPROM_READ_CMD | addr);
+	cs8900_e2prom_ready();
+	*value = get_reg(PP_EEData);
+
+	return 0;
+}
+
+
+/***********************************************************/
+/* write a 16-bit word into the EEPROM                     */
+/***********************************************************/
+
+void cs8900_e2prom_write(unsigned char addr, unsigned short value)
+{
+	cs8900_e2prom_ready();
+	put_reg(PP_EECMD, EEPROM_WRITE_EN);
+	cs8900_e2prom_ready();
+	put_reg(PP_EEData, value);
+	put_reg(PP_EECMD, EEPROM_WRITE_CMD | addr);
+	cs8900_e2prom_ready();
+	put_reg(PP_EECMD, EEPROM_WRITE_DIS);
+	cs8900_e2prom_ready();
+
+	return 0;
+}
+
 #endif	/* COMMANDS & CFG_NET */
 
 #endif	/* CONFIG_DRIVER_CS8900 */