Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220504133612.604304-1-Qing-wu.Li@leica-geosystems.com.cn> <20220504133612.604304-4-Qing-wu.Li@leica-geosystems.com.cn>
In-Reply-To: <20220504133612.604304-4-Qing-wu.Li@leica-geosystems.com.cn>
From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Wed, 4 May 2022 16:20:11 +0200
Message-ID: <CAHp75VeseZ2ChtbafmbgVavS4KvCvrQ4+XSRkeiJSyqr8__dSw@mail.gmail.com>
Subject: Re: [PATCH V3 3/5] iio: accel: sca3300: modified to support multi chips
To:     LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>
Cc:     Jonathan Cameron <jic23@kernel.org>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Rob Herring <robh+dt@kernel.org>,
        Tomas Melin <tomas.melin@vaisala.com>,
        devicetree <devicetree@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-iio <linux-iio@vger.kernel.org>,
        Rob Herring <robh@kernel.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Wed, May 4, 2022 at 3:36 PM LI Qingwu
<Qing-wu.Li@leica-geosystems.com.cn> wrote:
>
> The drive support sca3300 only.

driver supports

> There are some other similar chips, for instance, SCL3300.
> Prepare the way for multiple chips and additional channels.
> Modify the driver to read the device id.
> Add the tables for the corresponding id to support multiple chips.
> Add prepares for the addition of extra channels.
> Add prepares for handling the operation modes for multiple chips.

It seems you need to work more on the commit messages in all patches.

...

> +struct sca3300_chip_info {
> +       const struct iio_chan_spec *channels;
> +       const int (*accel_scale_table)[2];
> +       const int *accel_scale_modes_map;
> +       const unsigned long *scan_masks;
> +       const int *avail_modes_table;
> +       const int *freq_modes_map;
> +       const int *freq_table;
> +       const u8 num_accel_scales;
> +       const u8 num_avail_modes;
> +       const u8 num_channels;
> +       const u8 num_freqs;
> +       const u8 chip_id;

Why do you have const qualifier on all members?  The last one is
understandable, but the rest, esp. pointers should be justified.

> +       const char *name;
> +};

...

> +static int sca3300_set_op_mode(struct sca3300_data *sca_data, int index)
> +{
> +       int mode;
> +
> +       if ((index < 0) || (index >= sca_data->chip->num_avail_modes))

Too many parentheses.

> +               return -EINVAL;
> +
> +       mode = sca_data->chip->avail_modes_table[index];
> +
> +       return sca3300_write_reg(sca_data, SCA3300_REG_MODE, mode);
> +}

-- 
With Best Regards,
Andy Shevchenko