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net: dm9000: Allow instantiation using device tree

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This patch adds Device Tree support to dm9000 driver.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Reviewed-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tomasz Figa 2013-05-20 09:16:58 +00:00 committed by David S. Miller
parent aafc787e41
commit 0b8bf1baab
3 changed files with 69 additions and 0 deletions
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26
Documentation/devicetree/bindings/net/davicom-dm9000.txt Normal file
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@ -0,0 +1,26 @@
Davicom DM9000 Fast Ethernet controller
Required properties:
- compatible = "davicom,dm9000";
- reg : physical addresses and sizes of registers, must contain 2 entries:
first entry : address register,
second entry : data register.
- interrupt-parent : interrupt controller to which the device is connected
- interrupts : interrupt specifier specific to interrupt controller
Optional properties:
- local-mac-address : A bytestring of 6 bytes specifying Ethernet MAC address
to use (from firmware or bootloader)
- davicom,no-eeprom : Configuration EEPROM is not available
- davicom,ext-phy : Use external PHY
Example:
ethernet@18000000 {
compatible = "davicom,dm9000";
reg = <0x18000000 0x2 0x18000004 0x2>;
interrupt-parent = <&gpn>;
interrupts = <7 4>;
local-mac-address = [00 00 de ad be ef];
davicom,no-eeprom;
};

1
Documentation/devicetree/bindings/vendor-prefixes.txt
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@ -18,6 +18,7 @@ chrp Common Hardware Reference Platform
cirrus Cirrus Logic, Inc.
cortina Cortina Systems, Inc.
dallas Maxim Integrated Products (formerly Dallas Semiconductor)
davicom DAVICOM Semiconductor, Inc.
denx Denx Software Engineering
emmicro EM Microelectronic
epson Seiko Epson Corp.

42
drivers/net/ethernet/davicom/dm9000.c
View File

@ -29,6 +29,8 @@
#include <linux/spinlock.h>
#include <linux/crc32.h>
#include <linux/mii.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/ethtool.h>
#include <linux/dm9000.h>
#include <linux/delay.h>
@ -1351,6 +1353,31 @@ static const struct net_device_ops dm9000_netdev_ops = {
#endif
};
static struct dm9000_plat_data *dm9000_parse_dt(struct device *dev)
{
struct dm9000_plat_data *pdata;
struct device_node *np = dev->of_node;
const void *mac_addr;
if (!IS_ENABLED(CONFIG_OF) || !np)
return NULL;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM);
if (of_find_property(np, "davicom,ext-phy", NULL))
pdata->flags |= DM9000_PLATF_EXT_PHY;
if (of_find_property(np, "davicom,no-eeprom", NULL))
pdata->flags |= DM9000_PLATF_NO_EEPROM;
mac_addr = of_get_mac_address(np);
if (mac_addr)
memcpy(pdata->dev_addr, mac_addr, sizeof(pdata->dev_addr));
return pdata;
}
/*
* Search DM9000 board, allocate space and register it
*/
@ -1366,6 +1393,12 @@ dm9000_probe(struct platform_device *pdev)
int i;
u32 id_val;
if (!pdata) {
pdata = dm9000_parse_dt(&pdev->dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
}
/* Init network device */
ndev = alloc_etherdev(sizeof(struct board_info));
if (!ndev)
@ -1676,11 +1709,20 @@ dm9000_drv_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id dm9000_of_matches[] = {
{ .compatible = "davicom,dm9000", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dm9000_of_matches);
#endif
static struct platform_driver dm9000_driver = {
.driver = {
.name = "dm9000",
.owner = THIS_MODULE,
.pm = &dm9000_drv_pm_ops,
.of_match_table = of_match_ptr(dm9000_of_matches),
},
.probe = dm9000_probe,
.remove = dm9000_drv_remove,