iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arcnet: com20020-pci: add attribute to readback backplane status

Browse Source 
We add the sysfs interface the read back the backplane
status of the interface.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Grzeschik 2017-06-28 18:32:19 +02:00 committed by David S. Miller
parent 05fcd31cc4
commit ede07a1fc7
1 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/net/arcnet/com20020-pci.c
View File

@ -93,6 +93,27 @@ static void led_recon_set(struct led_classdev *led_cdev,
outb(!!value, priv->misc + ci->leds[card->index].red);
}
static ssize_t backplane_mode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct net_device *net_dev = to_net_dev(dev);
struct arcnet_local *lp = netdev_priv(net_dev);
return sprintf(buf, "%s\n", lp->backplane ? "true" : "false");
}
static DEVICE_ATTR_RO(backplane_mode);
static struct attribute *com20020_state_attrs[] = {
&dev_attr_backplane_mode.attr,
NULL,
};
static struct attribute_group com20020_state_group = {
.name = NULL,
.attrs = com20020_state_attrs,
};
static void com20020pci_remove(struct pci_dev *pdev);
static int com20020pci_probe(struct pci_dev *pdev,
@ -168,6 +189,7 @@ static int com20020pci_probe(struct pci_dev *pdev,
dev->base_addr = ioaddr;
dev->dev_addr[0] = node;
dev->sysfs_groups[0] = &com20020_state_group;
dev->irq = pdev->irq;
lp->card_name = "PCI COM20020";
lp->card_flags = ci->flags;