Re: [PATCH] hwmon: (pmbus/core): Generalize pmbus status flag map

[Guenter Roeck <linux@roeck-us.net>]

On 1/18/23 03:15, Naresh Solanki wrote:
> Move the PMBus status flag map (pmbus_regulator_status_flag_map)
> outside of the regulator #if block and update the associated
> variable/struct name to reflect a generic PMBus status. Also retain
> the regulator error flag for use in determining regulator specific error.
> 
> This will make the PMBus status flag map more versatile and easier to
> incorporate into different contexts and functions.
> 
> Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>

Sorry, I don't see the point of moving a structure including
regulator error codes outside regulator code.

Guenter

> ---
>   drivers/hwmon/pmbus/pmbus_core.c | 94 ++++++++++++++++----------------
>   1 file changed, 47 insertions(+), 47 deletions(-)
> 
> diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
> index 95e95783972a..1b70cf3be313 100644
> --- a/drivers/hwmon/pmbus/pmbus_core.c
> +++ b/drivers/hwmon/pmbus/pmbus_core.c
> @@ -2692,6 +2692,49 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data,
>   	return 0;
>   }
>   
> +/* A PMBus status flag and the corresponding REGULATOR_ERROR_* flag */
> +struct pmbus_status_assoc {
> +	int pflag, rflag;
> +};
> +
> +/* PMBus->regulator bit mappings for a PMBus status register */
> +struct pmbus_status_category {
> +	int func;
> +	int reg;
> +	const struct pmbus_status_assoc *bits; /* zero-terminated */
> +};
> +
> +static const struct pmbus_status_category __maybe_unused pmbus_status_flag_map[] = {
> +	{
> +		.func = PMBUS_HAVE_STATUS_VOUT,
> +		.reg = PMBUS_STATUS_VOUT,
> +		.bits = (const struct pmbus_status_assoc[]) {
> +			{ PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN },
> +			{ PB_VOLTAGE_UV_FAULT,   REGULATOR_ERROR_UNDER_VOLTAGE },
> +			{ PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN },
> +			{ PB_VOLTAGE_OV_FAULT,   REGULATOR_ERROR_REGULATION_OUT },
> +			{ },
> +		},
> +	}, {
> +		.func = PMBUS_HAVE_STATUS_IOUT,
> +		.reg = PMBUS_STATUS_IOUT,
> +		.bits = (const struct pmbus_status_assoc[]) {
> +			{ PB_IOUT_OC_WARNING,    REGULATOR_ERROR_OVER_CURRENT_WARN },
> +			{ PB_IOUT_OC_FAULT,      REGULATOR_ERROR_OVER_CURRENT },
> +			{ PB_IOUT_OC_LV_FAULT,   REGULATOR_ERROR_OVER_CURRENT },
> +			{ },
> +		},
> +	}, {
> +		.func = PMBUS_HAVE_STATUS_TEMP,
> +		.reg = PMBUS_STATUS_TEMPERATURE,
> +		.bits = (const struct pmbus_status_assoc[]) {
> +			{ PB_TEMP_OT_WARNING,    REGULATOR_ERROR_OVER_TEMP_WARN },
> +			{ PB_TEMP_OT_FAULT,      REGULATOR_ERROR_OVER_TEMP },
> +			{ },
> +		},
> +	},
> +};
> +
>   #if IS_ENABLED(CONFIG_REGULATOR)
>   static int pmbus_regulator_is_enabled(struct regulator_dev *rdev)
>   {
> @@ -2738,54 +2781,11 @@ static int pmbus_regulator_disable(struct regulator_dev *rdev)
>   	return _pmbus_regulator_on_off(rdev, 0);
>   }
>   
> -/* A PMBus status flag and the corresponding REGULATOR_ERROR_* flag */
> -struct pmbus_regulator_status_assoc {
> -	int pflag, rflag;
> -};
> -
> -/* PMBus->regulator bit mappings for a PMBus status register */
> -struct pmbus_regulator_status_category {
> -	int func;
> -	int reg;
> -	const struct pmbus_regulator_status_assoc *bits; /* zero-terminated */
> -};
> -
> -static const struct pmbus_regulator_status_category pmbus_regulator_flag_map[] = {
> -	{
> -		.func = PMBUS_HAVE_STATUS_VOUT,
> -		.reg = PMBUS_STATUS_VOUT,
> -		.bits = (const struct pmbus_regulator_status_assoc[]) {
> -			{ PB_VOLTAGE_UV_WARNING, REGULATOR_ERROR_UNDER_VOLTAGE_WARN },
> -			{ PB_VOLTAGE_UV_FAULT,   REGULATOR_ERROR_UNDER_VOLTAGE },
> -			{ PB_VOLTAGE_OV_WARNING, REGULATOR_ERROR_OVER_VOLTAGE_WARN },
> -			{ PB_VOLTAGE_OV_FAULT,   REGULATOR_ERROR_REGULATION_OUT },
> -			{ },
> -		},
> -	}, {
> -		.func = PMBUS_HAVE_STATUS_IOUT,
> -		.reg = PMBUS_STATUS_IOUT,
> -		.bits = (const struct pmbus_regulator_status_assoc[]) {
> -			{ PB_IOUT_OC_WARNING,    REGULATOR_ERROR_OVER_CURRENT_WARN },
> -			{ PB_IOUT_OC_FAULT,      REGULATOR_ERROR_OVER_CURRENT },
> -			{ PB_IOUT_OC_LV_FAULT,   REGULATOR_ERROR_OVER_CURRENT },
> -			{ },
> -		},
> -	}, {
> -		.func = PMBUS_HAVE_STATUS_TEMP,
> -		.reg = PMBUS_STATUS_TEMPERATURE,
> -		.bits = (const struct pmbus_regulator_status_assoc[]) {
> -			{ PB_TEMP_OT_WARNING,    REGULATOR_ERROR_OVER_TEMP_WARN },
> -			{ PB_TEMP_OT_FAULT,      REGULATOR_ERROR_OVER_TEMP },
> -			{ },
> -		},
> -	},
> -};
> -
>   static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned int *flags)
>   {
>   	int i, status;
> -	const struct pmbus_regulator_status_category *cat;
> -	const struct pmbus_regulator_status_assoc *bit;
> +	const struct pmbus_status_category *cat;
> +	const struct pmbus_status_assoc *bit;
>   	struct device *dev = rdev_get_dev(rdev);
>   	struct i2c_client *client = to_i2c_client(dev->parent);
>   	struct pmbus_data *data = i2c_get_clientdata(client);
> @@ -2796,8 +2796,8 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned
>   
>   	mutex_lock(&data->update_lock);
>   
> -	for (i = 0; i < ARRAY_SIZE(pmbus_regulator_flag_map); i++) {
> -		cat = &pmbus_regulator_flag_map[i];
> +	for (i = 0; i < ARRAY_SIZE(pmbus_status_flag_map); i++) {
> +		cat = &pmbus_status_flag_map[i];
>   		if (!(func & cat->func))
>   			continue;
>   
> 
> base-commit: 774dccfe77dcd8cf1d82df1f61fe95a720dc76e4