netdev - Re: [RFC PATCH net-next] sh_eth: add support for r8a7790 SoC

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Message-ID: <518CD330.5030009@cogentembedded.com>
Date:	Fri, 10 May 2013 15:00:00 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Simon Horman <horms+renesas@...ge.net.au>
CC:	netdev@...r.kernel.org, linux-sh@...r.kernel.org,
	Magnus Damm <magnus.damm@...il.com>
Subject: Re: [RFC PATCH net-next] sh_eth: add support for r8a7790 SoC

Hello.

On 10-05-2013 12:01, Simon Horman wrote:

> Cc: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
> Signed-off-by: Simon Horman <horms+renesas@...ge.net.au>
[...]

> diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
> index 33dc6f2..1ec26bd 100644
> --- a/drivers/net/ethernet/renesas/sh_eth.c
> +++ b/drivers/net/ethernet/renesas/sh_eth.c
[...]
> @@ -342,7 +343,8 @@ static void sh_eth_select_mii(struct net_device *ndev)
>   #endif
>
>   /* There is CPU dependent code */
> -#if defined(CONFIG_ARCH_R8A7778) || defined(CONFIG_ARCH_R8A7779)
> +#if defined(CONFIG_ARCH_R8A7778) || defined(CONFIG_ARCH_R8A7779) || \
> +	defined(CONFIG_ARCH_R8A7790)
>   #define SH_ETH_RESET_DEFAULT	1
>   static void sh_eth_set_duplex(struct net_device *ndev)
>   {
> @@ -370,7 +372,7 @@ static void sh_eth_set_rate(struct net_device *ndev)
>   	}
>   }
>
> -/* R8A7778/9 */
> +/* R8A7778, R8A7779, R8A7790 */
>   static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
>   	.set_duplex	= sh_eth_set_duplex,
>   	.set_rate	= sh_eth_set_rate,
> @@ -1275,6 +1277,10 @@ static int sh_eth_dev_init(struct net_device *ndev, bool start)
>   	if (ret)
>   		goto out;
>
> +#if defined(CONFIG_ARCH_R8A7790)
> +	sh_eth_write(ndev, 0x1, RMIIMODE);
> +#endif
> +

    Ugh, this #ifdef will be hard to get rid of. Perhaps you should add 
a field to 'struct sh_eth_cpu_data' indicating the presence of this 
register instead.

WBR, Sergei

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