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ks8851: Add caching of CCR register

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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>
This commit is contained in:
Sebastien Jan 2010-05-05 08:45:52 +00:00 committed by David S. Miller
parent d951f72503
commit 7d9974666e
1 changed files with 12 additions and 0 deletions
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12
drivers/net/ks8851.c
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@ -78,7 +78,9 @@ union ks8851_tx_hdr {
* @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 @@ struct ks8851_net {
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 @@ static int __devinit ks8851_probe(struct spi_device *spi)
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);