linux-kernel - Re: [PATCH v3 2/2] hwmon: (pmbus/tda38640) Add driver for Infineon TDA38640 Voltage Regulator

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Message-ID: <20230124174124.GA563936@roeck-us.net>
Date:   Tue, 24 Jan 2023 09:41:24 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Naresh Solanki <naresh.solanki@...ements.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        Patrick Rudolph <patrick.rudolph@...ements.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] hwmon: (pmbus/tda38640) Add driver for Infineon
 TDA38640 Voltage Regulator

On Tue, Jan 24, 2023 at 08:44:18PM +0530, Naresh Solanki wrote:
> 
> 
> On 24-01-2023 08:39 pm, Krzysztof Kozlowski wrote:
> > On 24/01/2023 15:48, Naresh Solanki wrote:
> > > From: Patrick Rudolph <patrick.rudolph@...ements.com>
> > > 
> > > Add the pmbus driver for the Infineon TDA38640 voltage regulator.
> > > 
> > > Signed-off-by: Patrick Rudolph <patrick.rudolph@...ements.com>
> > > Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
> > > ---
> > 
> > (...)
> > 
> > > +
> > > +#include <linux/err.h>
> > > +#include <linux/i2c.h>
> > > +#include <linux/init.h>
> > > +#include <linux/kernel.h>
> > > +#include <linux/module.h>
> > > +#include <linux/regulator/driver.h>
> > > +#include "pmbus.h"
> > > +
> > > +static const struct regulator_desc __maybe_unused tda38640_reg_desc[] = {
> > > +	PMBUS_REGULATOR("vout", 0),
> > > +};
> > > +
> > > +static struct pmbus_driver_info tda38640_info = {
> > > +	.pages = 1,
> > > +	.format[PSC_VOLTAGE_IN] = linear,
> > > +	.format[PSC_VOLTAGE_OUT] = linear,
> > > +	.format[PSC_CURRENT_OUT] = linear,
> > > +	.format[PSC_CURRENT_IN] = linear,
> > > +	.format[PSC_POWER] = linear,
> > > +	.format[PSC_TEMPERATURE] = linear,
> > > +
> > > +	.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
> > > +	    | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
> > > +	    | PMBUS_HAVE_IIN
> > > +	    | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
> > > +	    | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
> > > +	    | PMBUS_HAVE_POUT | PMBUS_HAVE_PIN,
> > > +#if IS_ENABLED(CONFIG_SENSORS_TDA38640_REGULATOR)
> > > +	.num_regulators = 1,
> > > +	.reg_desc = tda38640_reg_desc,
> > > +#endif
> > > +};
> > > +
> > > +static int tda38640_probe(struct i2c_client *client)
> > > +{
> > > +	return pmbus_do_probe(client, &tda38640_info);
> > > +}
> > > +
> > > +static const struct i2c_device_id tda38640_id[] = {
> > > +	{"tda38640", 0},
> > > +	{}
> > > +};
> > > +MODULE_DEVICE_TABLE(i2c, tda38640_id);
> > > +
> > > +static const struct of_device_id __maybe_unused tda38640_of_match[] = {
> > > +	{ .compatible = "infineon,tda38640"},
> > > +	{ },
> > > +};
> > > +MODULE_DEVICE_TABLE(of, tda38640_of_match);
> > 
> > No improvements here. Do not send new version without solving the
> > feedback (or finishing the discussion). Its usage is still missing in
> > your i2c_driver.
> I realized I missed reference to tda38640_of_match below.
> 
> static struct i2c_driver tda38640_driver = {
>         .driver = {
>                    .name = "tda38640",
>                    .of_match_table = of_match_ptr(tda38640_of_match),
>                    },

Column alignment also looks off. I would expect tabs only, like

	.driver = {
		.name = "tda38640",
		.of_match_table = of_match_ptr(tda38640_of_match),
	},

Guenter

>         .probe_new = tda38640_probe,
>         .id_table = tda38640_id,
> };
> 
> Will fix that.
> > 
> > Best regards,
> > Krzysztof
> > 
> Thanks,
> Naresh