* @vdd_reg: Optional regulator supplying the chip
* @vdd_io: Optional digital power supply for IO
* @gpio: Optional reset_n gpio
+ * @lock: Bus access lock callback
+ * @unlock: Bus access unlock callback
+ * @rdreg16: 16bit register read callback
+ * @wrreg16: 16bit register write callback
+ * @rdfifo: FIFO read callback
+ * @wrfifo: FIFO write callback
+ * @start_xmit: start_xmit() implementation callback
+ * @rx_skb: rx_skb() implementation callback
+ * @flush_tx_work: flush_tx_work() implementation callback
*
* The @statelock is used to protect information in the structure which may
* need to be accessed via several sources, such as the network driver layer
struct regulator *vdd_reg;
struct regulator *vdd_io;
int gpio;
+
+ void (*lock)(struct ks8851_net *ks,
+ unsigned long *flags);
+ void (*unlock)(struct ks8851_net *ks,
+ unsigned long *flags);
+ unsigned int (*rdreg16)(struct ks8851_net *ks,
+ unsigned int reg);
+ void (*wrreg16)(struct ks8851_net *ks,
+ unsigned int reg, unsigned int val);
+ void (*rdfifo)(struct ks8851_net *ks, u8 *buff,
+ unsigned int len);
+ void (*wrfifo)(struct ks8851_net *ks,
+ struct sk_buff *txp, bool irq);
+ netdev_tx_t (*start_xmit)(struct sk_buff *skb,
+ struct net_device *dev);
+ void (*rx_skb)(struct ks8851_net *ks,
+ struct sk_buff *skb);
+ void (*flush_tx_work)(struct ks8851_net *ks);
};
/**
#define MK_OP(_byteen, _reg) (BYTE_EN(_byteen) | (_reg) << (8+2) | (_reg) >> 6)
/**
- * ks8851_lock - register access lock
+ * ks8851_lock_spi - register access lock for SPI
* @ks: The chip state
* @flags: Spinlock flags
*
* Claim chip register access lock
*/
-static void ks8851_lock(struct ks8851_net *ks, unsigned long *flags)
+static void ks8851_lock_spi(struct ks8851_net *ks, unsigned long *flags)
{
struct ks8851_net_spi *kss = to_ks8851_spi(ks);
}
/**
- * ks8851_unlock - register access unlock
+ * ks8851_unlock_spi - register access unlock for SPI
* @ks: The chip state
* @flags: Spinlock flags
*
* Release chip register access lock
*/
-static void ks8851_unlock(struct ks8851_net *ks, unsigned long *flags)
+static void ks8851_unlock_spi(struct ks8851_net *ks, unsigned long *flags)
{
struct ks8851_net_spi *kss = to_ks8851_spi(ks);
mutex_unlock(&kss->lock);
}
+/**
+ * ks8851_lock - register access lock
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Claim chip register access lock
+ */
+static void ks8851_lock(struct ks8851_net *ks, unsigned long *flags)
+{
+ ks->lock(ks, flags);
+}
+
+/**
+ * ks8851_unlock - register access unlock
+ * @ks: The chip state
+ * @flags: Spinlock flags
+ *
+ * Release chip register access lock
+ */
+static void ks8851_unlock(struct ks8851_net *ks, unsigned long *flags)
+{
+ ks->unlock(ks, flags);
+}
+
/* SPI register read/write calls.
*
* All these calls issue SPI transactions to access the chip's registers. They
*/
/**
- * ks8851_wrreg16 - write 16bit register value to chip
+ * ks8851_wrreg16_spi - write 16bit register value to chip via SPI
* @ks: The chip state
* @reg: The register address
* @val: The value to write
*
* Issue a write to put the value @val into the register specified in @reg.
*/
-static void ks8851_wrreg16(struct ks8851_net *ks, unsigned reg, unsigned val)
+static void ks8851_wrreg16_spi(struct ks8851_net *ks, unsigned int reg,
+ unsigned int val)
{
struct ks8851_net_spi *kss = to_ks8851_spi(ks);
struct spi_transfer *xfer = &kss->spi_xfer1;
netdev_err(ks->netdev, "spi_sync() failed\n");
}
+/**
+ * ks8851_wrreg16 - write 16bit register value to chip
+ * @ks: The chip state
+ * @reg: The register address
+ * @val: The value to write
+ *
+ * Issue a write to put the value @val into the register specified in @reg.
+ */
+static void ks8851_wrreg16(struct ks8851_net *ks, unsigned int reg,
+ unsigned int val)
+{
+ ks->wrreg16(ks, reg, val);
+}
+
/**
* ks8851_rdreg - issue read register command and return the data
* @ks: The device state
}
/**
- * ks8851_rdreg16 - read 16 bit register from device
+ * ks8851_rdreg16_spi - read 16 bit register from device via SPI
* @ks: The chip information
* @reg: The register address
*
* Read a 16bit register from the chip, returning the result
*/
-static unsigned ks8851_rdreg16(struct ks8851_net *ks, unsigned reg)
+static unsigned int ks8851_rdreg16_spi(struct ks8851_net *ks,
+ unsigned int reg)
{
__le16 rx = 0;
return le16_to_cpu(rx);
}
+/**
+ * ks8851_rdreg16 - read 16 bit register from device
+ * @ks: The chip information
+ * @reg: The register address
+ *
+ * Read a 16bit register from the chip, returning the result
+ */
+static unsigned int ks8851_rdreg16(struct ks8851_net *ks,
+ unsigned int reg)
+{
+ return ks->rdreg16(ks, reg);
+}
+
/**
* ks8851_soft_reset - issue one of the soft reset to the device
* @ks: The device state.
}
/**
- * ks8851_rdfifo - read data from the receive fifo
+ * ks8851_rdfifo_spi - read data from the receive fifo via SPI
* @ks: The device state.
* @buff: The buffer address
* @len: The length of the data to read
* Issue an RXQ FIFO read command and read the @len amount of data from
* the FIFO into the buffer specified by @buff.
*/
-static void ks8851_rdfifo(struct ks8851_net *ks, u8 *buff, unsigned len)
+static void ks8851_rdfifo_spi(struct ks8851_net *ks, u8 *buff,
+ unsigned int len)
{
struct ks8851_net_spi *kss = to_ks8851_spi(ks);
struct spi_transfer *xfer = kss->spi_xfer2;
}
/**
- * ks8851_rx_skb - receive skbuff
+ * ks8851_rx_skb_spi - receive skbuff for SPI
+ * @ks: The device state
* @skb: The skbuff
*/
-static void ks8851_rx_skb(struct sk_buff *skb)
+static void ks8851_rx_skb_spi(struct ks8851_net *ks, struct sk_buff *skb)
{
netif_rx_ni(skb);
}
+/**
+ * ks8851_rx_skb - receive skbuff
+ * @ks: The device state
+ * @skb: The skbuff
+ */
+static void ks8851_rx_skb(struct ks8851_net *ks, struct sk_buff *skb)
+{
+ ks->rx_skb(ks, skb);
+}
+
/**
* ks8851_rx_pkts - receive packets from the host
* @ks: The device information.
rxpkt = skb_put(skb, rxlen) - 8;
- ks8851_rdfifo(ks, rxpkt, rxalign + 8);
+ ks->rdfifo(ks, rxpkt, rxalign + 8);
if (netif_msg_pktdata(ks))
ks8851_dbg_dumpkkt(ks, rxpkt);
skb->protocol = eth_type_trans(skb, ks->netdev);
- ks8851_rx_skb(skb);
+ ks8851_rx_skb(ks, skb);
ks->netdev->stats.rx_packets++;
ks->netdev->stats.rx_bytes += rxlen;
}
/**
- * ks8851_wrpkt - write packet to TX FIFO
+ * ks8851_wrpkt_spi - write packet to TX FIFO via SPI
* @ks: The device state.
* @txp: The sk_buff to transmit.
* @irq: IRQ on completion of the packet.
* needs, such as IRQ on completion. Send the header and the packet data to
* the device.
*/
-static void ks8851_wrpkt(struct ks8851_net *ks, struct sk_buff *txp, bool irq)
+static void ks8851_wrpkt_spi(struct ks8851_net *ks, struct sk_buff *txp,
+ bool irq)
{
struct ks8851_net_spi *kss = to_ks8851_spi(ks);
struct spi_transfer *xfer = kss->spi_xfer2;
if (txb != NULL) {
ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
- ks8851_wrpkt(ks, txb, last);
+ ks->wrfifo(ks, txb, last);
ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
ks8851_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
}
/**
- * ks8851_flush_tx_work - flush outstanding TX work
+ * ks8851_flush_tx_work_spi - flush outstanding TX work for SPI
* @ks: The device state
*/
-static void ks8851_flush_tx_work(struct ks8851_net *ks)
+static void ks8851_flush_tx_work_spi(struct ks8851_net *ks)
{
struct ks8851_net_spi *kss = to_ks8851_spi(ks);
flush_work(&kss->tx_work);
}
+/**
+ * ks8851_flush_tx_work - flush outstanding TX work
+ * @ks: The device state
+ */
+static void ks8851_flush_tx_work(struct ks8851_net *ks)
+{
+ if (ks->flush_tx_work)
+ ks->flush_tx_work(ks);
+}
+
/**
* ks8851_net_open - open network device
* @dev: The network device being opened.
}
/**
- * ks8851_start_xmit - transmit packet
+ * ks8851_start_xmit_spi - transmit packet using SPI
* @skb: The buffer to transmit
* @dev: The device used to transmit the packet.
*
* and secondly so we can round up more than one packet to transmit which
* means we can try and avoid generating too many transmit done interrupts.
*/
-static netdev_tx_t ks8851_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
+static netdev_tx_t ks8851_start_xmit_spi(struct sk_buff *skb,
+ struct net_device *dev)
{
struct ks8851_net *ks = netdev_priv(dev);
unsigned needed = calc_txlen(skb->len);
return ret;
}
+/**
+ * ks8851_start_xmit - transmit packet
+ * @skb: The buffer to transmit
+ * @dev: The device used to transmit the packet.
+ *
+ * Called by the network layer to transmit the @skb. Queue the packet for
+ * the device and schedule the necessary work to transmit the packet when
+ * it is free.
+ *
+ * We do this to firstly avoid sleeping with the network device locked,
+ * and secondly so we can round up more than one packet to transmit which
+ * means we can try and avoid generating too many transmit done interrupts.
+ */
+static netdev_tx_t ks8851_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ks8851_net *ks = netdev_priv(dev);
+
+ return ks->start_xmit(skb, dev);
+}
+
/**
* ks8851_rxctrl_work - work handler to change rx mode
* @work: The work structure this belongs to.
ks = netdev_priv(netdev);
+ ks->lock = ks8851_lock_spi;
+ ks->unlock = ks8851_unlock_spi;
+ ks->rdreg16 = ks8851_rdreg16_spi;
+ ks->wrreg16 = ks8851_wrreg16_spi;
+ ks->rdfifo = ks8851_rdfifo_spi;
+ ks->wrfifo = ks8851_wrpkt_spi;
+ ks->start_xmit = ks8851_start_xmit_spi;
+ ks->rx_skb = ks8851_rx_skb_spi;
+ ks->flush_tx_work = ks8851_flush_tx_work_spi;
+
#define STD_IRQ (IRQ_LCI | /* Link Change */ \
IRQ_TXI | /* TX done */ \
IRQ_RXI | /* RX done */ \
projects / kernel.git / commitdiff