[PATCH 09/10] ARM: mx28: read fec mac address from ocotp

[Uwe Kleine-König]

Hello Shawn,

On Tue, Dec 28, 2010 at 10:55:54PM +0800, Shawn Guo wrote:
> Read fec mac address from ocotp and save it into fec_platform_data
> mac field for fec driver to use.
> 
> Signed-off-by: Shawn Guo <shawn.guo at freescale.com>
> ---
>  arch/arm/mach-mxs/devices/platform-fec.c        |    2 +-
>  arch/arm/mach-mxs/include/mach/devices-common.h |    2 +-
>  arch/arm/mach-mxs/mach-mx28evk.c                |   31 +++++++++++++++++++++++
>  3 files changed, 33 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/mach-mxs/devices/platform-fec.c b/arch/arm/mach-mxs/devices/platform-fec.c
> index c08168c..dc978ee 100644
> --- a/arch/arm/mach-mxs/devices/platform-fec.c
> +++ b/arch/arm/mach-mxs/devices/platform-fec.c
> @@ -31,7 +31,7 @@ const struct mxs_fec_data mx28_fec_data[] __initconst = {
>  
>  struct platform_device *__init mxs_add_fec(
>  		const struct mxs_fec_data *data,
> -		const struct fec_platform_data *pdata)
> +		struct fec_platform_data *pdata)
>  {
>  	struct resource res[] = {
>  		{
> diff --git a/arch/arm/mach-mxs/include/mach/devices-common.h b/arch/arm/mach-mxs/include/mach/devices-common.h
> index fca0551..d206e0a 100644
> --- a/arch/arm/mach-mxs/include/mach/devices-common.h
> +++ b/arch/arm/mach-mxs/include/mach/devices-common.h
> @@ -38,4 +38,4 @@ struct mxs_fec_data {
>  };
>  struct platform_device *__init mxs_add_fec(
>  		const struct mxs_fec_data *data,
> -		const struct fec_platform_data *pdata);
> +		struct fec_platform_data *pdata);
Why that?

> diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
> index def6519..d133733 100644
> --- a/arch/arm/mach-mxs/mach-mx28evk.c
> +++ b/arch/arm/mach-mxs/mach-mx28evk.c
> @@ -129,6 +129,36 @@ static struct fec_platform_data mx28_fec_pdata[] = {
>  	},
>  };
>  
> +static int __init mx28evk_fec_get_mac(void)
> +{
> +	int i, ret;
> +	u32 val;
> +
> +	/*
> +	 * OCOTP only stores the last 4 octets for each mac address,
> +	 * so hard-coding the first two octets as Freescale OUI (00:04:9f)
> +	 * is needed.
> +	 */
> +	for (i = 0; i < 2; i++) {
> +		ret = mxs_read_ocotp(0x20 + i * 0x10, 1, &val);
> +		if (ret)
> +			goto error;
> +
> +		mx28_fec_pdata[i].mac[0] = 0x00;
> +		mx28_fec_pdata[i].mac[1] = 0x04;
> +		mx28_fec_pdata[i].mac[2] = (val >> 24) & 0xff;
> +		mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
> +		mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
> +		mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
> +	}
> +
> +	return 0;
> +
> +error:
> +	pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
> +	return -ETIMEDOUT;
return ret please.

> +}
I think this should be defined in a more generic place.

> +
>  static void __init mx28evk_init(void)
>  {
>  	mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
> @@ -136,6 +166,7 @@ static void __init mx28evk_init(void)
>  	mx28_add_duart();
>  
>  	mx28evk_fec_reset();
> +	mx28evk_fec_get_mac();
You ignore the return value here.  Intended?

>  	mx28_add_fec(0, &mx28_fec_pdata[0]);
>  #ifdef CONFIG_FEC2
>  	mx28_add_fec(1, &mx28_fec_pdata[1]);
> -- 
> 1.7.1
> 
> 
> 

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |