diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2017-06-28 19:32:19 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-29 22:26:13 +0300 |
| commit | ede07a1fc7d70adfb290cfdace391295897023cb (patch) | |
| tree | 83d1c56e9c4d4d8d0ddb0dc21028b2755e311e83 /drivers/net/arcnet/com20020-pci.c | |
| parent | 05fcd31cc472c5da6416d3bc2ab25599bbb9331f (diff) | |
| download | linux-ede07a1fc7d70adfb290cfdace391295897023cb.tar.xz | |
arcnet: com20020-pci: add attribute to readback backplane status
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>
Diffstat (limited to 'drivers/net/arcnet/com20020-pci.c')
| -rw-r--r-- | drivers/net/arcnet/com20020-pci.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c index 239de38fbd6a..dec300cac55f 100644 --- a/drivers/net/arcnet/com20020-pci.c +++ b/drivers/net/arcnet/com20020-pci.c @@ -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; |