diff options
Diffstat (limited to 'drivers/power/supply/ab8500_btemp.c')
| -rw-r--r-- | drivers/power/supply/ab8500_btemp.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/power/supply/ab8500_btemp.c b/drivers/power/supply/ab8500_btemp.c index dbdcff32f353..b6c9111d77d7 100644 --- a/drivers/power/supply/ab8500_btemp.c +++ b/drivers/power/supply/ab8500_btemp.c @@ -27,6 +27,7 @@ #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500.h> #include <linux/iio/consumer.h> +#include <linux/fixp-arith.h> #include "ab8500-bm.h" @@ -102,7 +103,7 @@ struct ab8500_btemp { struct iio_channel *btemp_ball; struct iio_channel *bat_ctrl; struct ab8500_fg *fg; - struct abx500_bm_data *bm; + struct ab8500_bm_data *bm; struct power_supply *btemp_psy; struct ab8500_btemp_events events; struct ab8500_btemp_ranges btemp_ranges; @@ -144,7 +145,7 @@ static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di, return (450000 * (v_batctrl)) / (1800 - v_batctrl); } - if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL) { + if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL) { /* * If the battery has internal NTC, we use the current * source to calculate the resistance. @@ -206,7 +207,7 @@ static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di, return 0; /* Only do this for batteries with internal NTC */ - if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && enable) { + if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL && enable) { if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_7UA) curr = BAT_CTRL_7U_ENA; @@ -239,7 +240,7 @@ static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di, __func__); goto disable_curr_source; } - } else if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && !enable) { + } else if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL && !enable) { dev_dbg(di->dev, "Disable BATCTRL curr source\n"); /* Write 0 to the curr bits */ @@ -417,7 +418,7 @@ static int ab8500_btemp_get_batctrl_res(struct ab8500_btemp *di) * based on the NTC resistance. */ static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di, - const struct abx500_res_to_temp *tbl, int tbl_size, int res) + const struct ab8500_res_to_temp *tbl, int tbl_size, int res) { int i; /* @@ -437,8 +438,9 @@ static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di, i++; } - return tbl[i].temp + ((tbl[i + 1].temp - tbl[i].temp) * - (res - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist); + return fixp_linear_interpolate(tbl[i].resist, tbl[i].temp, + tbl[i + 1].resist, tbl[i + 1].temp, + res); } /** @@ -456,7 +458,7 @@ static int ab8500_btemp_measure_temp(struct ab8500_btemp *di) id = di->bm->batt_id; - if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && + if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL && id != BATTERY_UNKNOWN) { rbat = ab8500_btemp_get_batctrl_res(di); @@ -525,7 +527,7 @@ static int ab8500_btemp_id(struct ab8500_btemp *di) dev_dbg(di->dev, "Battery detected on %s" " low %d < res %d < high: %d" " index: %d\n", - di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL ? + di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL ? "BATCTRL" : "BATTEMP", di->bm->bat_type[i].resis_low, res, di->bm->bat_type[i].resis_high, i); @@ -545,7 +547,7 @@ static int ab8500_btemp_id(struct ab8500_btemp *di) * We only have to change current source if the * detected type is Type 1. */ - if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && + if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL && di->bm->batt_id == 1) { dev_dbg(di->dev, "Set BATCTRL current source to 20uA\n"); di->curr_source = BTEMP_BATCTRL_CURR_SRC_20UA; |