diff options
| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2020-09-26 21:05:34 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2020-09-30 01:12:22 +0200 |
| commit | 724083293e18adf805ce5aa6dda2fe6c12071537 (patch) | |
| tree | 3ece89677009464180f2ed098f7459a383666a45 | |
| parent | 3f41e742ee9413b4d1f5d2edf3c71a5db0c87b81 (diff) | |
power: supply: bq25890: support IBAT compensation
Add configuration for compensation of IBAT measuring resistor in series
with the battery.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
| -rw-r--r-- | drivers/power/supply/bq25890_charger.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index 77150667e36b..ab8398f935c5 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -83,6 +83,8 @@ struct bq25890_init_data { u8 boostf; /* boost frequency */ u8 ilim_en; /* enable ILIM pin */ u8 treg; /* thermal regulation threshold */ + u8 rbatcomp; /* IBAT sense resistor value */ + u8 vclamp; /* IBAT compensation voltage limit */ }; struct bq25890_state { @@ -258,6 +260,8 @@ enum bq25890_table_ids { TBL_VREG, TBL_BOOSTV, TBL_SYSVMIN, + TBL_VBATCOMP, + TBL_RBATCOMP, /* lookup tables */ TBL_TREG, @@ -299,6 +303,8 @@ static const union { [TBL_VREG] = { .rt = {3840000, 4608000, 16000} }, /* uV */ [TBL_BOOSTV] = { .rt = {4550000, 5510000, 64000} }, /* uV */ [TBL_SYSVMIN] = { .rt = {3000000, 3700000, 100000} }, /* uV */ + [TBL_VBATCOMP] ={ .rt = {0, 224000, 32000} }, /* uV */ + [TBL_RBATCOMP] ={ .rt = {0, 140000, 20000} }, /* uOhm */ /* lookup tables */ [TBL_TREG] = { .lt = {bq25890_treg_tbl, BQ25890_TREG_TBL_SIZE} }, @@ -648,7 +654,9 @@ static int bq25890_hw_init(struct bq25890_device *bq) {F_BOOSTI, bq->init_data.boosti}, {F_BOOSTF, bq->init_data.boostf}, {F_EN_ILIM, bq->init_data.ilim_en}, - {F_TREG, bq->init_data.treg} + {F_TREG, bq->init_data.treg}, + {F_BATCMP, bq->init_data.rbatcomp}, + {F_VCLAMP, bq->init_data.vclamp}, }; ret = bq25890_chip_reset(bq); @@ -859,11 +867,14 @@ static int bq25890_fw_read_u32_props(struct bq25890_device *bq) {"ti,boost-max-current", false, TBL_BOOSTI, &init->boosti}, /* optional properties */ - {"ti,thermal-regulation-threshold", true, TBL_TREG, &init->treg} + {"ti,thermal-regulation-threshold", true, TBL_TREG, &init->treg}, + {"ti,ibatcomp-micro-ohms", true, TBL_RBATCOMP, &init->rbatcomp}, + {"ti,ibatcomp-clamp-microvolt", true, TBL_VBATCOMP, &init->vclamp}, }; /* initialize data for optional properties */ init->treg = 3; /* 120 degrees Celsius */ + init->rbatcomp = init->vclamp = 0; /* IBAT compensation disabled */ for (i = 0; i < ARRAY_SIZE(props); i++) { ret = device_property_read_u32(bq->dev, props[i].name, |