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ks8842: Add platform data for setting mac address

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This patch adds platform data to the ks8842 driver.

Via the platform data a MAC address, to be used by the controller,
can be passed.

To ensure this MAC address is used, the MAC address is written
after each hardware reset.

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Röjfors 2010-04-21 16:33:29 -07:00 committed by David S. Miller
parent 6846ad2826
commit a1aa8822d5
2 changed files with 76 additions and 11 deletions
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53
drivers/net/ks8842.c
View File

@ -1,5 +1,5 @@
/*
* ks8842_main.c timberdale KS8842 ethernet driver
* ks8842.c timberdale KS8842 ethernet driver
* Copyright (c) 2009 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
@ -28,6 +28,7 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/ks8842.h>
#define DRV_NAME "ks8842"
@ -304,6 +305,20 @@ static void ks8842_read_mac_addr(struct ks8842_adapter *adapter, u8 *dest)
ks8842_write16(adapter, 39, mac, REG_MACAR3);
}
static void ks8842_write_mac_addr(struct ks8842_adapter *adapter, u8 *mac)
{
unsigned long flags;
unsigned i;
spin_lock_irqsave(&adapter->lock, flags);
for (i = 0; i < ETH_ALEN; i++) {
ks8842_write8(adapter, 2, mac[ETH_ALEN - i - 1], REG_MARL + i);
ks8842_write8(adapter, 39, mac[ETH_ALEN - i - 1],
REG_MACAR1 + i);
}
spin_unlock_irqrestore(&adapter->lock, flags);
}
static inline u16 ks8842_tx_fifo_space(struct ks8842_adapter *adapter)
{
return ks8842_read16(adapter, 16, REG_TXMIR) & 0x1fff;
@ -522,6 +537,8 @@ static int ks8842_open(struct net_device *netdev)
/* reset the HW */
ks8842_reset_hw(adapter);
ks8842_write_mac_addr(adapter, netdev->dev_addr);
ks8842_update_link_status(netdev, adapter);
err = request_irq(adapter->irq, ks8842_irq, IRQF_SHARED, DRV_NAME,
@ -568,10 +585,8 @@ static netdev_tx_t ks8842_xmit_frame(struct sk_buff *skb,
static int ks8842_set_mac(struct net_device *netdev, void *p)
{
struct ks8842_adapter *adapter = netdev_priv(netdev);
unsigned long flags;
struct sockaddr *addr = p;
char *mac = (u8 *)addr->sa_data;
int i;
dev_dbg(&adapter->pdev->dev, "%s: entry\n", __func__);
@ -580,13 +595,7 @@ static int ks8842_set_mac(struct net_device *netdev, void *p)
memcpy(netdev->dev_addr, mac, netdev->addr_len);
spin_lock_irqsave(&adapter->lock, flags);
for (i = 0; i < ETH_ALEN; i++) {
ks8842_write8(adapter, 2, mac[ETH_ALEN - i - 1], REG_MARL + i);
ks8842_write8(adapter, 39, mac[ETH_ALEN - i - 1],
REG_MACAR1 + i);
}
spin_unlock_irqrestore(&adapter->lock, flags);
ks8842_write_mac_addr(adapter, mac);
return 0;
}
@ -605,6 +614,8 @@ static void ks8842_tx_timeout(struct net_device *netdev)
ks8842_reset_hw(adapter);
ks8842_write_mac_addr(adapter, netdev->dev_addr);
ks8842_update_link_status(netdev, adapter);
}
@ -627,7 +638,9 @@ static int __devinit ks8842_probe(struct platform_device *pdev)
struct resource *iomem;
struct net_device *netdev;
struct ks8842_adapter *adapter;
struct ks8842_platform_data *pdata = pdev->dev.platform_data;
u16 id;
unsigned i;
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!request_mem_region(iomem->start, resource_size(iomem), DRV_NAME))
@ -658,7 +671,25 @@ static int __devinit ks8842_probe(struct platform_device *pdev)
netdev->netdev_ops = &ks8842_netdev_ops;
netdev->ethtool_ops = &ks8842_ethtool_ops;
ks8842_read_mac_addr(adapter, netdev->dev_addr);
/* Check if a mac address was given */
i = netdev->addr_len;
if (pdata) {
for (i = 0; i < netdev->addr_len; i++)
if (pdata->macaddr[i] != 0)
break;
if (i < netdev->addr_len)
/* an address was passed, use it */
memcpy(netdev->dev_addr, pdata->macaddr,
netdev->addr_len);
}
if (i == netdev->addr_len) {
ks8842_read_mac_addr(adapter, netdev->dev_addr);
if (!is_valid_ether_addr(netdev->dev_addr))
random_ether_addr(netdev->dev_addr);
}
id = ks8842_read16(adapter, 32, REG_SW_ID_AND_ENABLE);

34
include/linux/ks8842.h Normal file
View File

@ -0,0 +1,34 @@
/*
* ks8842.h KS8842 platform data struct definition
* Copyright (c) 2010 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _LINUX_KS8842_H
#define _LINUX_KS8842_H
#include <linux/if_ether.h>
/**
* struct ks8842_platform_data - Platform data of the KS8842 network driver
* @macaddr: The MAC address of the device, set to all 0:s to use the on in
* the chip.
*
*/
struct ks8842_platform_data {
u8 macaddr[ETH_ALEN];
};
#endif