ks8851: Add caching of CCR register
CCR register contains information on companion eeprom availability.
Signed-off-by: Sebastien Jan <s-jan@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ks8851.c b/drivers/net/ks8851.c
index b8ed1ee..623171f 100644
--- a/drivers/net/ks8851.c
+++ b/drivers/net/ks8851.c
@@ -78,7 +78,9 @@
* @msg_enable: The message flags controlling driver output (see ethtool).
* @fid: Incrementing frame id tag.
* @rc_ier: Cached copy of KS_IER.
+ * @rc_ccr: Cached copy of KS_CCR.
* @rc_rxqcr: Cached copy of KS_RXQCR.
+ * @eeprom_size: Companion eeprom size in Bytes, 0 if no eeprom
*
* The @lock ensures that the chip is protected when certain operations are
* in progress. When the read or write packet transfer is in progress, most
@@ -109,6 +111,8 @@
u16 rc_ier;
u16 rc_rxqcr;
+ u16 rc_ccr;
+ u16 eeprom_size;
struct mii_if_info mii;
struct ks8851_rxctrl rxctrl;
@@ -1269,6 +1273,14 @@
goto err_id;
}
+ /* cache the contents of the CCR register for EEPROM, etc. */
+ ks->rc_ccr = ks8851_rdreg16(ks, KS_CCR);
+
+ if (ks->rc_ccr & CCR_EEPROM)
+ ks->eeprom_size = 128;
+ else
+ ks->eeprom_size = 0;
+
ks8851_read_selftest(ks);
ks8851_init_mac(ks);