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path: root/drivers/power/supply/cpcap-battery.c
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Diffstat (limited to 'drivers/power/supply/cpcap-battery.c')
-rw-r--r--drivers/power/supply/cpcap-battery.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c
index fe7fcf3a2ad0..7df9d432ee42 100644
--- a/drivers/power/supply/cpcap-battery.c
+++ b/drivers/power/supply/cpcap-battery.c
@@ -82,7 +82,7 @@ struct cpcap_battery_config {
};
struct cpcap_coulomb_counter_data {
- s32 sample; /* 24-bits */
+ s32 sample; /* 24 or 32 bits */
s32 accumulator;
s16 offset; /* 10-bits */
};
@@ -213,7 +213,7 @@ static int cpcap_battery_get_current(struct cpcap_battery_ddata *ddata)
* TI or ST coulomb counter in the PMIC.
*/
static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata,
- u32 sample, s32 accumulator,
+ s32 sample, s32 accumulator,
s16 offset, u32 divider)
{
s64 acc;
@@ -224,7 +224,6 @@ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata,
if (!divider)
return 0;
- sample &= 0xffffff; /* 24-bits, unsigned */
offset &= 0x7ff; /* 10-bits, signed */
switch (ddata->vendor) {
@@ -259,7 +258,7 @@ static int cpcap_battery_cc_raw_div(struct cpcap_battery_ddata *ddata,
/* 3600000μAms = 1μAh */
static int cpcap_battery_cc_to_uah(struct cpcap_battery_ddata *ddata,
- u32 sample, s32 accumulator,
+ s32 sample, s32 accumulator,
s16 offset)
{
return cpcap_battery_cc_raw_div(ddata, sample,
@@ -268,7 +267,7 @@ static int cpcap_battery_cc_to_uah(struct cpcap_battery_ddata *ddata,
}
static int cpcap_battery_cc_to_ua(struct cpcap_battery_ddata *ddata,
- u32 sample, s32 accumulator,
+ s32 sample, s32 accumulator,
s16 offset)
{
return cpcap_battery_cc_raw_div(ddata, sample,
@@ -312,6 +311,8 @@ cpcap_battery_read_accumulated(struct cpcap_battery_ddata *ddata,
/* Sample value CPCAP_REG_CCS1 & 2 */
ccd->sample = (buf[1] & 0x0fff) << 16;
ccd->sample |= buf[0];
+ if (ddata->vendor == CPCAP_VENDOR_TI)
+ ccd->sample = sign_extend32(24, ccd->sample);
/* Accumulator value CPCAP_REG_CCA1 & 2 */
ccd->accumulator = ((s16)buf[3]) << 16;