Commit ee847a25 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (ltc2978) Introduce helper functions for min and max values 



The code used to determine historic low and high peaks is repeated
several times. Introduce helper functions to simplify it.

Tested-by: default avatarMichael Jones <mike@proclivis.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 8582bcc8

drivers/hwmon/pmbus/ltc2978.c

+57 −91
Original line number Diff line number Diff line
@@ -118,6 +118,34 @@ static inline int lin11_to_val(int data) 
	return (e < 0 ? m >> -e : m << e);

}



static int ltc_get_max(struct ltc2978_data *data, struct i2c_client *client,

		       int page, int reg, u16 *pmax)

{

	int ret;



	ret = pmbus_read_word_data(client, page, reg);

	if (ret >= 0) {

		if (lin11_to_val(ret) > lin11_to_val(*pmax))

			*pmax = ret;

		ret = *pmax;

	}

	return ret;

}



static int ltc_get_min(struct ltc2978_data *data, struct i2c_client *client,

		       int page, int reg, u16 *pmin)

{

	int ret;



	ret = pmbus_read_word_data(client, page, reg);

	if (ret >= 0) {

		if (lin11_to_val(ret) < lin11_to_val(*pmin))

			*pmin = ret;

		ret = *pmin;

	}

	return ret;

}



static int ltc2978_read_word_data_common(struct i2c_client *client, int page,

					 int reg)

{
@@ -127,12 +155,8 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page, 


	switch (reg) {

	case PMBUS_VIRT_READ_VIN_MAX:

		ret = pmbus_read_word_data(client, page, LTC2978_MFR_VIN_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret) > lin11_to_val(data->vin_max))

				data->vin_max = ret;

			ret = data->vin_max;

		}

		ret = ltc_get_max(data, client, page, LTC2978_MFR_VIN_PEAK,

				  &data->vin_max);

		break;

	case PMBUS_VIRT_READ_VOUT_MAX:

		ret = pmbus_read_word_data(client, page, LTC2978_MFR_VOUT_PEAK);
@@ -147,14 +171,9 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page, 
		}

		break;

	case PMBUS_VIRT_READ_TEMP_MAX:

		ret = pmbus_read_word_data(client, page,

					   LTC2978_MFR_TEMPERATURE_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    > lin11_to_val(data->temp_max[page]))

				data->temp_max[page] = ret;

			ret = data->temp_max[page];

		}

		ret = ltc_get_max(data, client, page,

				  LTC2978_MFR_TEMPERATURE_PEAK,

				  &data->temp_max[page]);

		break;

	case PMBUS_VIRT_RESET_VOUT_HISTORY:

	case PMBUS_VIRT_RESET_VIN_HISTORY:
@@ -176,12 +195,8 @@ static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg) 


	switch (reg) {

	case PMBUS_VIRT_READ_VIN_MIN:

		ret = pmbus_read_word_data(client, page, LTC2978_MFR_VIN_MIN);

		if (ret >= 0) {

			if (lin11_to_val(ret) < lin11_to_val(data->vin_min))

				data->vin_min = ret;

			ret = data->vin_min;

		}

		ret = ltc_get_min(data, client, page, LTC2978_MFR_VIN_MIN,

				  &data->vin_min);

		break;

	case PMBUS_VIRT_READ_VOUT_MIN:

		ret = pmbus_read_word_data(client, page, LTC2978_MFR_VOUT_MIN);
@@ -200,14 +215,9 @@ static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg) 
		}

		break;

	case PMBUS_VIRT_READ_TEMP_MIN:

		ret = pmbus_read_word_data(client, page,

					   LTC2978_MFR_TEMPERATURE_MIN);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    < lin11_to_val(data->temp_min[page]))

				data->temp_min[page] = ret;

			ret = data->temp_min[page];

		}

		ret = ltc_get_min(data, client, page,

				  LTC2978_MFR_TEMPERATURE_MIN,

				  &data->temp_min[page]);

		break;

	case PMBUS_VIRT_READ_IOUT_MAX:

	case PMBUS_VIRT_RESET_IOUT_HISTORY:
@@ -230,22 +240,12 @@ static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg) 


	switch (reg) {

	case PMBUS_VIRT_READ_IOUT_MAX:

		ret = pmbus_read_word_data(client, page, LTC2974_MFR_IOUT_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    > lin11_to_val(data->iout_max[page]))

				data->iout_max[page] = ret;

			ret = data->iout_max[page];

		}

		ret = ltc_get_max(data, client, page, LTC2974_MFR_IOUT_PEAK,

				  &data->iout_max[page]);

		break;

	case PMBUS_VIRT_READ_IOUT_MIN:

		ret = pmbus_read_word_data(client, page, LTC2974_MFR_IOUT_MIN);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    < lin11_to_val(data->iout_min[page]))

				data->iout_min[page] = ret;

			ret = data->iout_min[page];

		}

		ret = ltc_get_min(data, client, page, LTC2974_MFR_IOUT_MIN,

				  &data->iout_min[page]);

		break;

	case PMBUS_VIRT_RESET_IOUT_HISTORY:

		ret = 0;
@@ -265,40 +265,20 @@ static int ltc2975_read_word_data(struct i2c_client *client, int page, int reg) 


	switch (reg) {

	case PMBUS_VIRT_READ_IIN_MAX:

		ret = pmbus_read_word_data(client, page, LTC2975_MFR_IIN_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    > lin11_to_val(data->iin_max))

				data->iin_max = ret;

			ret = data->iin_max;

		}

		ret = ltc_get_max(data, client, page, LTC2975_MFR_IIN_PEAK,

				  &data->iin_max);

		break;

	case PMBUS_VIRT_READ_IIN_MIN:

		ret = pmbus_read_word_data(client, page, LTC2975_MFR_IIN_MIN);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    < lin11_to_val(data->iin_min))

				data->iin_min = ret;

			ret = data->iin_min;

		}

		ret = ltc_get_min(data, client, page, LTC2975_MFR_IIN_MIN,

				  &data->iin_min);

		break;

	case PMBUS_VIRT_READ_PIN_MAX:

		ret = pmbus_read_word_data(client, page, LTC2975_MFR_PIN_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    > lin11_to_val(data->pin_max))

				data->pin_max = ret;

			ret = data->pin_max;

		}

		ret = ltc_get_max(data, client, page, LTC2975_MFR_PIN_PEAK,

				  &data->pin_max);

		break;

	case PMBUS_VIRT_READ_PIN_MIN:

		ret = pmbus_read_word_data(client, page, LTC2975_MFR_PIN_MIN);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    < lin11_to_val(data->pin_min))

				data->pin_min = ret;

			ret = data->pin_min;

		}

		ret = ltc_get_min(data, client, page, LTC2975_MFR_PIN_MIN,

				  &data->pin_min);

		break;

	case PMBUS_VIRT_RESET_IIN_HISTORY:

	case PMBUS_VIRT_RESET_PIN_HISTORY:
@@ -319,22 +299,13 @@ static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg) 


	switch (reg) {

	case PMBUS_VIRT_READ_IOUT_MAX:

		ret = pmbus_read_word_data(client, page, LTC3880_MFR_IOUT_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    > lin11_to_val(data->iout_max[page]))

				data->iout_max[page] = ret;

			ret = data->iout_max[page];

		}

		ret = ltc_get_max(data, client, page, LTC3880_MFR_IOUT_PEAK,

				  &data->iout_max[page]);

		break;

	case PMBUS_VIRT_READ_TEMP2_MAX:

		ret = pmbus_read_word_data(client, page,

					   LTC3880_MFR_TEMPERATURE2_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret) > lin11_to_val(data->temp2_max))

				data->temp2_max = ret;

			ret = data->temp2_max;

		}

		ret = ltc_get_max(data, client, page,

				  LTC3880_MFR_TEMPERATURE2_PEAK,

				  &data->temp2_max);

		break;

	case PMBUS_VIRT_READ_VIN_MIN:

	case PMBUS_VIRT_READ_VOUT_MIN:
@@ -360,13 +331,8 @@ static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg) 


	switch (reg) {

	case PMBUS_VIRT_READ_IIN_MAX:

		ret = pmbus_read_word_data(client, page, LTC3883_MFR_IIN_PEAK);

		if (ret >= 0) {

			if (lin11_to_val(ret)

			    > lin11_to_val(data->iin_max))

				data->iin_max = ret;

			ret = data->iin_max;

		}

		ret = ltc_get_max(data, client, page, LTC3883_MFR_IIN_PEAK,

				  &data->iin_max);

		break;

	case PMBUS_VIRT_RESET_IIN_HISTORY:

		ret = 0;

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