From: Guenter Roeck Date: Sun, 16 Aug 2015 00:17:53 +0000 (-0700) Subject: hwmon: (ltc2978) Introduce helper functions for min and max values X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ee847a252664f54d06bcc6ab2864322cbcb52692;p=linux-beck.git 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: Michael Jones Signed-off-by: Guenter Roeck --- diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 48cbb5794e30..c3b71668a47f 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -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;