NET: add ENC28J60 driver using SPI framework

V3: further refinements:
- use priv member instead of container method
- allow setting of MAC address by write_hwaddr method
- avoid shutting down link between commands

Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

1 files changed, 251 insertions, 0 deletions

diff --git a/drivers/net/enc28j60.h b/drivers/net/enc28j60.h
new file mode 100644
index 0000000..888c599
--- /dev/null
+++ b/drivers/net/enc28j60.h
@@ -0,0 +1,251 @@
+/*
+ * (X) extracted from enc28j60.c
+ * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _enc28j60_h
+#define _enc28j60_h
+
+/*
+ * SPI Commands
+ *
+ * Bits 7-5: Command
+ * Bits 4-0: Register
+ */
+#define CMD_RCR(x)	(0x00+((x)&0x1f))	/* Read Control Register */
+#define CMD_RBM		0x3a			/* Read Buffer Memory */
+#define CMD_WCR(x)	(0x40+((x)&0x1f))	/* Write Control Register */
+#define CMD_WBM		0x7a			/* Write Buffer Memory */
+#define CMD_BFS(x)	(0x80+((x)&0x1f))	/* Bit Field Set */
+#define CMD_BFC(x)	(0xa0+((x)&0x1f))	/* Bit Field Clear */
+#define CMD_SRC		0xff			/* System Reset Command */
+
+/* NEW: encode (bank number+1) in upper byte */
+
+/* Common Control Registers accessible in all Banks */
+#define CTL_REG_EIE		0x01B
+#define CTL_REG_EIR		0x01C
+#define CTL_REG_ESTAT		0x01D
+#define CTL_REG_ECON2		0x01E
+#define CTL_REG_ECON1		0x01F
+
+/* Control Registers accessible in Bank 0 */
+#define CTL_REG_ERDPTL		0x100
+#define CTL_REG_ERDPTH		0x101
+#define CTL_REG_EWRPTL		0x102
+#define CTL_REG_EWRPTH		0x103
+#define CTL_REG_ETXSTL		0x104
+#define CTL_REG_ETXSTH		0x105
+#define CTL_REG_ETXNDL		0x106
+#define CTL_REG_ETXNDH		0x107
+#define CTL_REG_ERXSTL		0x108
+#define CTL_REG_ERXSTH		0x109
+#define CTL_REG_ERXNDL		0x10A
+#define CTL_REG_ERXNDH		0x10B
+#define CTL_REG_ERXRDPTL	0x10C
+#define CTL_REG_ERXRDPTH	0x10D
+#define CTL_REG_ERXWRPTL	0x10E
+#define CTL_REG_ERXWRPTH	0x10F
+#define CTL_REG_EDMASTL		0x110
+#define CTL_REG_EDMASTH		0x111
+#define CTL_REG_EDMANDL		0x112
+#define CTL_REG_EDMANDH		0x113
+#define CTL_REG_EDMADSTL	0x114
+#define CTL_REG_EDMADSTH	0x115
+#define CTL_REG_EDMACSL		0x116
+#define CTL_REG_EDMACSH		0x117
+
+/* Control Registers accessible in Bank 1 */
+#define CTL_REG_EHT0		0x200
+#define CTL_REG_EHT1		0x201
+#define CTL_REG_EHT2		0x202
+#define CTL_REG_EHT3		0x203
+#define CTL_REG_EHT4		0x204
+#define CTL_REG_EHT5		0x205
+#define CTL_REG_EHT6		0x206
+#define CTL_REG_EHT7		0x207
+#define CTL_REG_EPMM0		0x208
+#define CTL_REG_EPMM1		0x209
+#define CTL_REG_EPMM2		0x20A
+#define CTL_REG_EPMM3		0x20B
+#define CTL_REG_EPMM4		0x20C
+#define CTL_REG_EPMM5		0x20D
+#define CTL_REG_EPMM6		0x20E
+#define CTL_REG_EPMM7		0x20F
+#define CTL_REG_EPMCSL		0x210
+#define CTL_REG_EPMCSH		0x211
+#define CTL_REG_EPMOL		0x214
+#define CTL_REG_EPMOH		0x215
+#define CTL_REG_EWOLIE		0x216
+#define CTL_REG_EWOLIR		0x217
+#define CTL_REG_ERXFCON		0x218
+#define CTL_REG_EPKTCNT		0x219
+
+/* Control Registers accessible in Bank 2 */
+#define CTL_REG_MACON1		0x300
+#define CTL_REG_MACON2		0x301
+#define CTL_REG_MACON3		0x302
+#define CTL_REG_MACON4		0x303
+#define CTL_REG_MABBIPG		0x304
+#define CTL_REG_MAIPGL		0x306
+#define CTL_REG_MAIPGH		0x307
+#define CTL_REG_MACLCON1	0x308
+#define CTL_REG_MACLCON2	0x309
+#define CTL_REG_MAMXFLL		0x30A
+#define CTL_REG_MAMXFLH		0x30B
+#define CTL_REG_MAPHSUP		0x30D
+#define CTL_REG_MICON		0x311
+#define CTL_REG_MICMD		0x312
+#define CTL_REG_MIREGADR	0x314
+#define CTL_REG_MIWRL		0x316
+#define CTL_REG_MIWRH		0x317
+#define CTL_REG_MIRDL		0x318
+#define CTL_REG_MIRDH		0x319
+
+/* Control Registers accessible in Bank 3 */
+#define CTL_REG_MAADR1		0x400
+#define CTL_REG_MAADR0		0x401
+#define CTL_REG_MAADR3		0x402
+#define CTL_REG_MAADR2		0x403
+#define CTL_REG_MAADR5		0x404
+#define CTL_REG_MAADR4		0x405
+#define CTL_REG_EBSTSD		0x406
+#define CTL_REG_EBSTCON		0x407
+#define CTL_REG_EBSTCSL		0x408
+#define CTL_REG_EBSTCSH		0x409
+#define CTL_REG_MISTAT		0x40A
+#define CTL_REG_EREVID		0x412
+#define CTL_REG_ECOCON		0x415
+#define CTL_REG_EFLOCON		0x417
+#define CTL_REG_EPAUSL		0x418
+#define CTL_REG_EPAUSH		0x419
+
+/* PHY Register */
+#define PHY_REG_PHCON1		0x00
+#define PHY_REG_PHSTAT1		0x01
+#define PHY_REG_PHID1		0x02
+#define PHY_REG_PHID2		0x03
+#define PHY_REG_PHCON2		0x10
+#define PHY_REG_PHSTAT2		0x11
+#define PHY_REG_PHLCON		0x14
+
+/* Receive Filter Register (ERXFCON) bits */
+#define ENC_RFR_UCEN		0x80
+#define ENC_RFR_ANDOR		0x40
+#define ENC_RFR_CRCEN		0x20
+#define ENC_RFR_PMEN		0x10
+#define ENC_RFR_MPEN		0x08
+#define ENC_RFR_HTEN		0x04
+#define ENC_RFR_MCEN		0x02
+#define ENC_RFR_BCEN		0x01
+
+/* ECON1 Register Bits */
+#define ENC_ECON1_TXRST		0x80
+#define ENC_ECON1_RXRST		0x40
+#define ENC_ECON1_DMAST		0x20
+#define ENC_ECON1_CSUMEN	0x10
+#define ENC_ECON1_TXRTS		0x08
+#define ENC_ECON1_RXEN		0x04
+#define ENC_ECON1_BSEL1		0x02
+#define ENC_ECON1_BSEL0		0x01
+
+/* ECON2 Register Bits */
+#define ENC_ECON2_AUTOINC	0x80
+#define ENC_ECON2_PKTDEC	0x40
+#define ENC_ECON2_PWRSV		0x20
+#define ENC_ECON2_VRPS		0x08
+
+/* EIR Register Bits */
+#define ENC_EIR_PKTIF		0x40
+#define ENC_EIR_DMAIF		0x20
+#define ENC_EIR_LINKIF		0x10
+#define ENC_EIR_TXIF		0x08
+#define ENC_EIR_WOLIF		0x04
+#define ENC_EIR_TXERIF		0x02
+#define ENC_EIR_RXERIF		0x01
+
+/* ESTAT Register Bits */
+#define ENC_ESTAT_INT		0x80
+#define ENC_ESTAT_LATECOL	0x10
+#define ENC_ESTAT_RXBUSY	0x04
+#define ENC_ESTAT_TXABRT	0x02
+#define ENC_ESTAT_CLKRDY	0x01
+
+/* EIE Register Bits */
+#define ENC_EIE_INTIE		0x80
+#define ENC_EIE_PKTIE		0x40
+#define ENC_EIE_DMAIE		0x20
+#define ENC_EIE_LINKIE		0x10
+#define ENC_EIE_TXIE		0x08
+#define ENC_EIE_WOLIE		0x04
+#define ENC_EIE_TXERIE		0x02
+#define ENC_EIE_RXERIE		0x01
+
+/* MACON1 Register Bits */
+#define ENC_MACON1_LOOPBK	0x10
+#define ENC_MACON1_TXPAUS	0x08
+#define ENC_MACON1_RXPAUS	0x04
+#define ENC_MACON1_PASSALL	0x02
+#define ENC_MACON1_MARXEN	0x01
+
+/* MACON2 Register Bits */
+#define ENC_MACON2_MARST	0x80
+#define ENC_MACON2_RNDRST	0x40
+#define ENC_MACON2_MARXRST	0x08
+#define ENC_MACON2_RFUNRST	0x04
+#define ENC_MACON2_MATXRST	0x02
+#define ENC_MACON2_TFUNRST	0x01
+
+/* MACON3 Register Bits */
+#define ENC_MACON3_PADCFG2	0x80
+#define ENC_MACON3_PADCFG1	0x40
+#define ENC_MACON3_PADCFG0	0x20
+#define ENC_MACON3_TXCRCEN	0x10
+#define ENC_MACON3_PHDRLEN	0x08
+#define ENC_MACON3_HFRMEN	0x04
+#define ENC_MACON3_FRMLNEN	0x02
+#define ENC_MACON3_FULDPX	0x01
+
+/* MACON4 Register Bits */
+#define ENC_MACON4_DEFER	0x40
+
+/* MICMD Register Bits */
+#define ENC_MICMD_MIISCAN	0x02
+#define ENC_MICMD_MIIRD		0x01
+
+/* MISTAT Register Bits */
+#define ENC_MISTAT_NVALID	0x04
+#define ENC_MISTAT_SCAN		0x02
+#define ENC_MISTAT_BUSY		0x01
+
+/* PHID1 and PHID2 values */
+#define ENC_PHID1_VALUE		0x0083
+#define ENC_PHID2_VALUE		0x1400
+#define ENC_PHID2_MASK		0xFC00
+
+/* PHCON1 values */
+#define	ENC_PHCON1_PDPXMD	0x0100
+
+/* PHSTAT1 values */
+#define	ENC_PHSTAT1_LLSTAT	0x0004
+
+/* PHSTAT2 values */
+#define	ENC_PHSTAT2_LSTAT	0x0400
+#define	ENC_PHSTAT2_DPXSTAT	0x0200
+
+#endif