linux-kernel - Re: [PATCH v5 7/8] i2c: iproc: add NIC I2C support

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Date:   Tue, 2 Apr 2019 12:27:34 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Ray Jui <ray.jui@...adcom.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Rayagonda Kokatanur <rayagonda.kokatanur@...adcom.com>
Subject: Re: [PATCH v5 7/8] i2c: iproc: add NIC I2C support

> +#define IDM_CTRL_DIRECT_OFFSET       0x00

And this IDM thing is also never used outside of the I2C context? In
other words, it also doesn't need a seperate DT node?

> +	/* indicates no slave mode support */
> +	bool no_slave;

I would suggest to not use a flag, but to nullify the {un}reg_slave
callbacks in probe depending on the type. That will also tell the
i2c-core that slave functionality is not supported. And you can use if
(!algo->reg_slave) as a flag, too.

> +	iproc_i2c->type =
> +		(enum bcm_iproc_i2c_type) of_device_get_match_data(&pdev->dev);

No need to cast a void*.

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