linux-kernel - Re: [PATCH v3 1/4] hwmon: pm_bus: core: Add min

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Date:   Thu, 29 Dec 2022 06:02:11 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Saravanan Sekar <saravanan@...umiz.com>
Cc:     jdelvare@...e.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, marten.lindahl@...s.com,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] hwmon: pm_bus: core: Add min_uV in pmbus
 regulator helper macro

On Wed, Dec 07, 2022 at 06:37:13PM +0100, Saravanan Sekar wrote:
> Some regulator operates in a range of voltage which should not allow
> below the lower threshold.
> 
> Signed-off-by: Saravanan Sekar <saravanan@...umiz.com>

Applied to hwmon-next.

> ---
>  drivers/hwmon/pmbus/ltc2978.c | 16 ++++++++--------
>  drivers/hwmon/pmbus/pmbus.h   |  5 +++--
>  2 files changed, 11 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
> index 6d2592731ba3..406a36885ef3 100644
> --- a/drivers/hwmon/pmbus/ltc2978.c
> +++ b/drivers/hwmon/pmbus/ltc2978.c
> @@ -569,14 +569,14 @@ MODULE_DEVICE_TABLE(i2c, ltc2978_id);
>  #define LTC2978_N_VOLTAGES	((LTC2978_MAX_UV / LTC2978_UV_STEP) + 1)
>  
>  static const struct regulator_desc ltc2978_reg_desc[] = {
> -	PMBUS_REGULATOR_STEP("vout", 0, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 1, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 2, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 3, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 4, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 5, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 6, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> -	PMBUS_REGULATOR_STEP("vout", 7, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
> +	PMBUS_REGULATOR_STEP("vout", 0, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 1, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 2, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 3, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 4, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 5, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 6, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
> +	PMBUS_REGULATOR_STEP("vout", 7, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
>  };
>  
>  static const struct regulator_desc ltc2978_reg_desc_default[] = {
> diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
> index 10fb17879f8e..713ea7915425 100644
> --- a/drivers/hwmon/pmbus/pmbus.h
> +++ b/drivers/hwmon/pmbus/pmbus.h
> @@ -464,7 +464,7 @@ struct pmbus_driver_info {
>  extern const struct regulator_ops pmbus_regulator_ops;
>  
>  /* Macros for filling in array of struct regulator_desc */
> -#define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step)  \
> +#define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step, _min_uV)  \
>  	[_id] = {						\
>  		.name = (_name # _id),				\
>  		.id = (_id),					\
> @@ -475,9 +475,10 @@ extern const struct regulator_ops pmbus_regulator_ops;
>  		.owner = THIS_MODULE,				\
>  		.n_voltages = _voltages,			\
>  		.uV_step = _step,				\
> +		.min_uV = _min_uV,				\
>  	}
>  
> -#define PMBUS_REGULATOR(_name, _id)	PMBUS_REGULATOR_STEP(_name, _id, 0, 0)
> +#define PMBUS_REGULATOR(_name, _id)   PMBUS_REGULATOR_STEP(_name, _id, 0, 0, 0)
>  
>  /* Function declarations */
>