linux-kernel - Re: [PATCH v1 2/2] iio: adc: add Nuvoton NCT720x ADC driver

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Message-ID: <CA+4VgcJSt-LUNtH6TMpk7om+PbO1aQvmt1WHi-cYMxa8p+Um5A@mail.gmail.com>
Date: Thu, 7 Nov 2024 08:41:21 +0800
From: Yu-Hsian Yang <j2anfernee@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: avifishman70@...il.com, tmaimon77@...il.com, tali.perry1@...il.com, 
	venture@...gle.com, yuenn@...gle.com, benjaminfair@...gle.com, 
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	marius.cristea@...rochip.com, mike.looijmans@...ic.nl, 
	chanh@...amperecomputing.com, KWLIU@...oton.com, yhyang2@...oton.com, 
	openbmc@...ts.ozlabs.org, linux-iio@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] iio: adc: add Nuvoton NCT720x ADC driver

Dear Krzysztof Kozlowski,

Thank you for your response.

Krzysztof Kozlowski <krzk@...nel.org> 於 2024年11月6日 週三 下午9:41寫道：
>
> On 06/11/2024 03:39, Eason Yang wrote:
> > Add Nuvoton NCT7201/NCT7202 system voltage monitor 12-bit ADC driver
> >
> > NCT7201/NCT7202 supports up to 12 analog voltage monitor inputs and up to
> > 4 SMBus addresses by ADDR pin. Meanwhile, ALERT# hardware event pins for
> > independent alarm signals, and the all threshold values could be set for
> > system protection without any timing delay. It also supports reset input
> > RSTIN# to recover system from a fault condition.
> >
> > Currently, only single-edge mode conversion and threshold events support.
> >
> > Signed-off-by: Eason Yang <j2anfernee@...il.com>
>
> ...
>
> > +
> > +static int nct720x_probe(struct i2c_client *client)
> > +{
> > +     const struct i2c_device_id *id = i2c_client_get_device_id(client);
> > +     struct nct720x_chip_info *chip;
> > +     struct iio_dev *indio_dev;
> > +     int ret;
> > +     u32 tmp;
> > +
> > +     indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
> > +     if (!indio_dev)
> > +             return -ENOMEM;
> > +     chip = iio_priv(indio_dev);
> > +
> > +     if (client->dev.of_node)
> > +             chip->type = (enum nct720x_chips)device_get_match_data(&client->dev);
> > +     else
> > +             chip->type = i2c_match_id(nct720x_id, client)->driver_data;
>
> I believe there is a I2C wrapper for above.
>

Got it.

> > +
> > +     chip->vin_max = (chip->type == nct7201) ? NCT7201_VIN_MAX : NCT7202_VIN_MAX;
> > +
> > +     ret = of_property_read_u32(client->dev.of_node, "read-vin-data-size", &tmp);
> > +     if (ret < 0) {
> > +             pr_err("read-vin-data-size property not found\n");
>
> Please use dev_xxx in your driver code.

Got it.

>
>
> Best regards,
> Krzysztof
>