diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2014-09-18 00:12:50 +0200 |
|---|---|---|
| committer | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2015-10-26 09:10:56 +0100 |
| commit | 5ef216c1f84825c6942fdd6c24d12a08ac2df135 (patch) | |
| tree | 401f8c91fa1613f17c74f121135da9c651630813 /drivers/net/arcnet | |
| parent | ae8ede6a0cdcf3b21596f44dff30bbd02265bb41 (diff) | |
| download | linux-5ef216c1f84825c6942fdd6c24d12a08ac2df135.tar.bz2 | |
arcnet: com20020-pci: add rotary index support
The EAE PLX-PCI card has a special rotary encoder
to configure the address of every card individually.
We take this information for the initial setup of
the cards dev_id.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Diffstat (limited to 'drivers/net/arcnet')
| -rw-r--r-- | drivers/net/arcnet/com20020-pci.c | 33 | ||||
| -rw-r--r-- | drivers/net/arcnet/com20020.h | 4 |
2 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c index e3b7c14e619f..637a6110cec6 100644 --- a/drivers/net/arcnet/com20020-pci.c +++ b/drivers/net/arcnet/com20020-pci.c @@ -68,6 +68,7 @@ static int com20020pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct com20020_pci_card_info *ci; + struct com20020_pci_channel_map *mm; struct net_device *dev; struct arcnet_local *lp; struct com20020_priv *priv; @@ -84,9 +85,22 @@ static int com20020pci_probe(struct pci_dev *pdev, ci = (struct com20020_pci_card_info *)id->driver_data; priv->ci = ci; + mm = &ci->misc_map; INIT_LIST_HEAD(&priv->list_dev); + if (mm->size) { + ioaddr = pci_resource_start(pdev, mm->bar) + mm->offset; + r = devm_request_region(&pdev->dev, ioaddr, mm->size, + "com20020-pci"); + if (!r) { + pr_err("IO region %xh-%xh already allocated.\n", + ioaddr, ioaddr + mm->size - 1); + return -EBUSY; + } + priv->misc = ioaddr; + } + for (i = 0; i < ci->devcount; i++) { struct com20020_pci_channel_map *cm = &ci->chan_map_tbl[i]; struct com20020_dev *card; @@ -132,6 +146,13 @@ static int com20020pci_probe(struct pci_dev *pdev, lp->timeout = timeout; lp->hw.owner = THIS_MODULE; + /* Get the dev_id from the PLX rotary coder */ + if (!strncmp(ci->name, "EAE PLX-PCI MA1", 15)) + dev->dev_id = 0xc; + dev->dev_id ^= inb(priv->misc + ci->rotary) >> 4; + + snprintf(dev->name, sizeof(dev->name), "arc%d-%d", dev->dev_id, i); + if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) { pr_err("IO address %Xh is empty!\n", ioaddr); ret = -EIO; @@ -235,6 +256,12 @@ static struct com20020_pci_card_info card_info_eae_arc1 = { .size = 0x08, }, }, + .misc_map = { + .bar = 2, + .offset = 0x10, + .size = 0x04, + }, + .rotary = 0x0, .flags = ARC_CAN_10MBIT, }; @@ -252,6 +279,12 @@ static struct com20020_pci_card_info card_info_eae_ma1 = { .size = 0x08, } }, + .misc_map = { + .bar = 2, + .offset = 0x10, + .size = 0x04, + }, + .rotary = 0x0, .flags = ARC_CAN_10MBIT, }; diff --git a/drivers/net/arcnet/com20020.h b/drivers/net/arcnet/com20020.h index 22a460f39fb9..f2ed2eff3ae3 100644 --- a/drivers/net/arcnet/com20020.h +++ b/drivers/net/arcnet/com20020.h @@ -47,6 +47,9 @@ struct com20020_pci_card_info { int devcount; struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS]; + struct com20020_pci_channel_map misc_map; + + int rotary; unsigned int flags; }; @@ -54,6 +57,7 @@ struct com20020_pci_card_info { struct com20020_priv { struct com20020_pci_card_info *ci; struct list_head list_dev; + resource_size_t misc; }; struct com20020_dev { |