ks8851: Low level functions for read/write to companion eeprom

Low-level functions provide 16bits words read and write capability
to ks8851 companion eeprom.

Signed-off-by: Sebastien Jan <s-jan@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/net/ks8851.h b/drivers/net/ks8851.h
index f52c312cc356..537fb06e5932 100644
--- a/drivers/net/ks8851.h
+++ b/drivers/net/ks8851.h
@@ -25,12 +25,24 @@
 #define OBCR_ODS_16mA                           (1 << 6)
 
 #define KS_EEPCR                                0x22
+#define EEPCR_EESRWA                            (1 << 5)
 #define EEPCR_EESA                              (1 << 4)
-#define EEPCR_EESB                              (1 << 3)
+#define EEPCR_EESB_OFFSET                       3
+#define EEPCR_EESB                              (1 << EEPCR_EESB_OFFSET)
 #define EEPCR_EEDO                              (1 << 2)
 #define EEPCR_EESCK                             (1 << 1)
 #define EEPCR_EECS                              (1 << 0)
 
+#define EEPROM_OP_LEN                           3       /* bits:*/
+#define EEPROM_OP_READ                          0x06
+#define EEPROM_OP_EWEN                          0x04
+#define EEPROM_OP_WRITE                         0x05
+#define EEPROM_OP_EWDS                          0x14
+
+#define EEPROM_DATA_LEN                         16      /* 16 bits EEPROM */
+#define EEPROM_WRITE_TIME                       4       /* wrt ack time in ms */
+#define EEPROM_SK_PERIOD                        400     /* in us */
+
 #define KS_MBIR                                 0x24
 #define MBIR_TXMBF                              (1 << 12)
 #define MBIR_TXMBFA                             (1 << 11)