diff options
| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2008-04-24 01:27:32 +0200 |
|---|---|---|
| committer | Dale Farnsworth <dale@farnsworth.org> | 2008-04-28 21:17:07 -0700 |
| commit | c416a41f99be190e1f558cb06f70ddd560ce8b4b (patch) | |
| tree | 6cd9c1dc012066bc33f734264de72e9794b26808 | |
| parent | f2ce825d2a89b30af14fa577298fecaab7bc9504 (diff) | |
| download | lwn-c416a41f99be190e1f558cb06f70ddd560ce8b4b.tar.gz lwn-c416a41f99be190e1f558cb06f70ddd560ce8b4b.zip | |
mv643xx_eth: configurable t_clk
Make t_clk configurable via platform device data (with the current
hardcoded value, 133 MHz, being the default), as it varies across
different chip families.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
| -rw-r--r-- | drivers/net/mv643xx_eth.c | 17 | ||||
| -rw-r--r-- | include/linux/mv643xx_eth.h | 1 |
2 files changed, 10 insertions, 8 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index aabf1c60946d..8bd41e4e88a9 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -519,6 +519,8 @@ struct mv643xx_shared_private { spinlock_t phy_lock; u32 win_protect; + + unsigned int t_clk; }; struct mv643xx_private { @@ -1129,7 +1131,6 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id) * * INPUT: * struct mv643xx_private *mp Ethernet port - * unsigned int t_clk t_clk of the MV-643xx chip in HZ units * unsigned int delay Delay in usec * * OUTPUT: @@ -1140,10 +1141,10 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id) * */ static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp, - unsigned int t_clk, unsigned int delay) + unsigned int delay) { unsigned int port_num = mp->port_num; - unsigned int coal = ((t_clk / 1000000) * delay) / 64; + unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; /* Set RX Coalescing mechanism */ wrl(mp, SDMA_CONFIG_REG(port_num), @@ -1168,7 +1169,6 @@ static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp, * * INPUT: * struct mv643xx_private *mp Ethernet port - * unsigned int t_clk t_clk of the MV-643xx chip in HZ units * unsigned int delay Delay in uSeconds * * OUTPUT: @@ -1179,9 +1179,9 @@ static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp, * */ static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp, - unsigned int t_clk, unsigned int delay) + unsigned int delay) { - unsigned int coal = ((t_clk / 1000000) * delay) / 64; + unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; /* Set TX Coalescing mechanism */ wrl(mp, TX_FIFO_URGENT_THRESHOLD_REG(mp->port_num), coal << 4); @@ -1423,11 +1423,11 @@ static int mv643xx_eth_open(struct net_device *dev) #ifdef MV643XX_COAL mp->rx_int_coal = - eth_port_set_rx_coal(mp, 133000000, MV643XX_RX_COAL); + eth_port_set_rx_coal(mp, MV643XX_RX_COAL); #endif mp->tx_int_coal = - eth_port_set_tx_coal(mp, 133000000, MV643XX_TX_COAL); + eth_port_set_tx_coal(mp, MV643XX_TX_COAL); /* Unmask phy and link status changes interrupts */ wrl(mp, INTERRUPT_EXTEND_MASK_REG(port_num), ETH_INT_UNMASK_ALL_EXT); @@ -2063,6 +2063,7 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev) goto out_free; spin_lock_init(&msp->phy_lock); + msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; platform_set_drvdata(pdev, msp); diff --git a/include/linux/mv643xx_eth.h b/include/linux/mv643xx_eth.h index 4801b02b444e..9f3a6032ff2e 100644 --- a/include/linux/mv643xx_eth.h +++ b/include/linux/mv643xx_eth.h @@ -17,6 +17,7 @@ struct mv643xx_eth_shared_platform_data { struct mbus_dram_target_info *dram; + unsigned int t_clk; }; struct mv643xx_eth_platform_data { |