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From: Andrew Lunn <andrew@lunn.ch>
To: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: netdev@vger.kernel.org, grygorii.strashko@ti.com,
	ivan.khoronzhuk@linaro.org, nsekhar@ti.com, jiri@resnulli.us,
	ivecera@redhat.com, francois.ozog@linaro.org, yogeshs@ti.com,
	spatton@ti.com
Subject: Re: [PATCH 4/4] cpsw: add switchdev support
Date: Thu, 24 May 2018 15:12:29 +0200	[thread overview]
Message-ID: <20180524131229.GC24557@lunn.ch> (raw)
In-Reply-To: <1527144984-31236-5-git-send-email-ilias.apalodimas@linaro.org>

> @@ -2626,7 +2750,11 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
>  	data->mac_control = prop;
>  
>  	if (of_property_read_bool(node, "dual_emac"))
> -		data->dual_emac = 1;
> +		data->switch_mode = CPSW_DUAL_EMAC;
> +
> +	/* switchdev overrides DTS */
> +	if (IS_ENABLED(CONFIG_TI_CPSW_SWITCHDEV))
> +		data->switch_mode = CPSW_SWITCHDEV;

Device tree is supposed to describe the hardware. Using that hardware
in different ways is not something you should describe in DT.

There are also a lot of IS_ENABLED() here, which i don't like. It is a
lot better than #ifdef, but we should try to do better. It would be
good to split this cleanly into three parts. A generic library, which
does not care about DUAL_MAC or SWITCHDEV. A driver which implements
legacy DUAL MAC etc. And a driver which implements SWITCHDEV. We can
then give this new switchdev driver a different compatible. It i still
encoding in device tree how to use the hardware, but it is more
implicit, rather than explicit.

	  Andrew

  reply	other threads:[~2018-05-24 13:12 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-24  6:56 [PATCH 0/4] RFC CPSW switchdev mode Ilias Apalodimas
2018-05-24  6:56 ` [PATCH 1/4] cpsw: move common headers definitions to cpsw_priv.h Ilias Apalodimas
2018-05-24  6:56 ` [PATCH 2/4] cpsw_ale: add support functions for switchdev Ilias Apalodimas
2018-05-24  6:56 ` [PATCH 3/4] cpsw_switchdev: add switchdev support files Ilias Apalodimas
2018-05-24 10:00   ` Maxim Uvarov
2018-05-27  4:39   ` kbuild test robot
2018-05-24  6:56 ` [PATCH 4/4] cpsw: add switchdev support Ilias Apalodimas
2018-05-24 13:12   ` Andrew Lunn [this message]
2018-05-24 13:32     ` Ilias Apalodimas
2018-05-24 16:39       ` Andrew Lunn
2018-05-25  4:56         ` Ilias Apalodimas
2018-06-01 21:48           ` Florian Fainelli
2018-06-02 10:34             ` Ilias Apalodimas
2018-06-02 16:10               ` Florian Fainelli
2018-06-02 16:52                 ` Ilias Apalodimas
2018-06-05 21:03               ` Grygorii Strashko
2018-06-05 21:37                 ` Florian Fainelli
2018-05-24  8:05 ` [PATCH 0/4] RFC CPSW switchdev mode Jiri Pirko
2018-05-24  8:48   ` Ilias Apalodimas
2018-05-24 12:54     ` Andrew Lunn
2018-05-24 13:44       ` Ivan Vecera
2018-05-24 14:08         ` Ilias Apalodimas
2018-05-24 14:54           ` Andrew Lunn
2018-05-24 15:07             ` Ilias Apalodimas
2018-05-24 15:25               ` Andrew Lunn
2018-05-24 16:02                 ` Ilias Apalodimas
2018-05-24 16:33                   ` Andrew Lunn
2018-05-25  6:29                     ` Ilias Apalodimas
2018-05-25 10:28                       ` Ilias Apalodimas
2018-05-25 11:59                         ` Andrew Lunn
2018-05-25 12:09                       ` Andrew Lunn
2018-05-31 15:27                         ` Ilias Apalodimas
2018-06-02 23:28           ` Grygorii Strashko
2018-06-03  0:08             ` Andrew Lunn
2018-06-05 21:18               ` Grygorii Strashko
2018-06-05 21:28                 ` Andrew Lunn
2018-06-05 21:42                   ` Grygorii Strashko
2018-06-05 21:55                     ` Andrew Lunn
2018-06-03  0:26             ` Andrew Lunn
2018-06-05 23:23               ` Grygorii Strashko
2018-06-05 23:49                 ` Andrew Lunn
2018-06-06  8:23                 ` Ivan Khoronzhuk
2018-06-03  0:37             ` Andrew Lunn
2018-06-05 21:31               ` Grygorii Strashko
2018-06-05 21:37                 ` Andrew Lunn
2018-06-03  0:49             ` Andrew Lunn
2018-06-05 22:45               ` Grygorii Strashko
2018-06-05 23:40                 ` Andrew Lunn
2018-06-01 21:29 ` Grygorii Strashko
2018-06-02 14:08   ` Andrew Lunn
2018-06-05 22:59     ` Grygorii Strashko
2018-06-05 23:53       ` Andrew Lunn
2018-06-06  6:42         ` Ilias Apalodimas

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