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SubjectRe: [PATCH 2/3] net/fec: add device tree support

Hi Shawn,

On 06/19/2011 01:19 AM, Shawn Guo wrote:
> It adds device tree data parsing support for fec driver.
>
> Signed-off-by: Jason Liu<jason.hui@linaro.org>
> Signed-off-by: Shawn Guo<shawn.guo@linaro.org>
> Cc: David S. Miller<davem@davemloft.net>
> ---
> Documentation/devicetree/bindings/net/fsl-fec.txt | 14 ++++++++++
> drivers/net/fec.c | 28 +++++++++++++++++++++
> 2 files changed, 42 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/net/fsl-fec.txt
>
> diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt
> new file mode 100644
> index 0000000..705111d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/fsl-fec.txt
> @@ -0,0 +1,14 @@
> +* Freescale Fast Ethernet Controller (FEC)
> +
> +Required properties:
> +- compatible : should be "fsl,<soc>-fec", "fsl,fec"
> +- reg : address and length of the register set for the device
> +- interrupts : should contain fec interrupt
> +
> +Example:
> +
> +fec@83fec000 {
> + compatible = "fsl,imx51-fec", "fsl,fec";
> + reg =<0x83fec000 0x4000>;
> + interrupts =<87>;
> +};
> diff --git a/drivers/net/fec.c b/drivers/net/fec.c
> index 885d8ba..ef3d175 100644
> --- a/drivers/net/fec.c
> +++ b/drivers/net/fec.c
> @@ -44,6 +44,8 @@
> #include<linux/platform_device.h>
> #include<linux/phy.h>
> #include<linux/fec.h>
> +#include<linux/of.h>
> +#include<linux/of_device.h>
>
> #include<asm/cacheflush.h>
>
> @@ -78,6 +80,26 @@ static struct platform_device_id fec_devtype[] = {
> { }
> };
>
> +#ifdef CONFIG_OF
> +static const struct of_device_id fec_dt_ids[] = {
> + { .compatible = "fsl,fec", .data =&fec_devtype[0], },
> + {},
> +};
> +
> +static const struct of_device_id *
> +fec_get_of_device_id(struct platform_device *pdev)
> +{
> + return of_match_device(fec_dt_ids,&pdev->dev);
> +}
> +#else
> +#define fec_dt_ids NULL
> +static inline struct of_device_id *
> +fec_get_of_device_id(struct platform_device *pdev)
> +{
> + return NULL;
> +}
> +#endif
> +
> static unsigned char macaddr[ETH_ALEN];
> module_param_array(macaddr, byte, NULL, 0);
> MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
> @@ -1363,6 +1385,11 @@ fec_probe(struct platform_device *pdev)
> struct net_device *ndev;
> int i, irq, ret = 0;
> struct resource *r;
> + const struct of_device_id *of_id;
> +
> + of_id = fec_get_of_device_id(pdev);

fec_get_of_device_id() is defined inside of "#ifdef CONFIG_OF". This
use of it will break compilation when this is not defined.

Regards
Greg



> + if (of_id)
> + pdev->id_entry = (struct platform_device_id *) of_id->data;
>
> r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> if (!r)
> @@ -1531,6 +1558,7 @@ static struct platform_driver fec_driver = {
> #ifdef CONFIG_PM
> .pm =&fec_pm_ops,
> #endif
> + .of_match_table = fec_dt_ids,
> },
> .id_table = fec_devtype,
> .probe = fec_probe,


--
------------------------------------------------------------------------
Greg Ungerer -- Principal Engineer EMAIL: gerg@snapgear.com
SnapGear Group, McAfee PHONE: +61 7 3435 2888
8 Gardner Close, FAX: +61 7 3891 3630
Milton, QLD, 4064, Australia WEB: http://www.SnapGear.com

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