Mailing List Archive

TS_IGNORE is default off in bq256xx chip. For some HW which doesn't have
the NTC, we need to set TS_IGNORE to 1 to make the charge work. The new
"ti,no-thermistor" is introduced to toggle it.

Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
---

Notes:
v2: change property name to ti,no-thermistor

v3: drop "|" in property description

drivers/power/supply/bq256xx_charger.c | 28 ++++++++++++++++++++++++++
1 file changed, 28 insertions(+)

diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c
index 9cf4936440c9..cacaae1d559b 100644
--- a/drivers/power/supply/bq256xx_charger.c
+++ b/drivers/power/supply/bq256xx_charger.c
@@ -41,6 +41,9 @@
#define BQ256XX_IINDPM_MAX_uA 3200000
#define BQ256XX_IINDPM_DEF_uA 2400000

+#define BQ256XX_TS_IGNORE BIT(6)
+#define BQ256XX_TS_IGNORE_SHIFT 6
+
#define BQ256XX_VINDPM_MASK GENMASK(3, 0)
#define BQ256XX_VINDPM_STEP_uV 100000
#define BQ256XX_VINDPM_OFFSET_uV 3900000
@@ -153,6 +156,7 @@
* @vindpm: input voltage limit
* @ichg_max: maximum fast charge current
* @vbatreg_max: maximum charge voltage
+ * @ts_ignore: TS_IGNORE flag
*/
struct bq256xx_init_data {
u32 ichg;
@@ -163,6 +167,7 @@ struct bq256xx_init_data {
u32 vindpm;
u32 ichg_max;
u32 vbatreg_max;
+ bool ts_ignore;
};

/**
@@ -259,6 +264,7 @@ struct bq256xx_device {
* @bq256xx_set_iterm: pointer to instance specific set_iterm function
* @bq256xx_set_iprechg: pointer to instance specific set_iprechg function
* @bq256xx_set_vindpm: pointer to instance specific set_vindpm function
+ * @bq256xx_set_ts_ignore: pointer to instance specific set_ts_ignore function
*
* @bq256xx_def_ichg: default ichg value in microamps
* @bq256xx_def_iindpm: default iindpm value in microamps
@@ -290,6 +296,7 @@ struct bq256xx_chip_info {
int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm);
int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg);
int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm);
+ int (*bq256xx_set_ts_ignore)(struct bq256xx_device *bq, bool ts_ignore);

int bq256xx_def_ichg;
int bq256xx_def_iindpm;
@@ -670,6 +677,12 @@ static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
BQ256XX_VBATREG_BIT_SHIFT);
}

+static int bq256xx_set_ts_ignore(struct bq256xx_device *bq, bool ts_ignore)
+{
+ return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
+ BQ256XX_TS_IGNORE, (ts_ignore ? 1 : 0) << BQ256XX_TS_IGNORE_SHIFT);
+}
+
static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq)
{
unsigned int prechg_and_term_curr_lim;
@@ -1279,6 +1292,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_get_iterm = bq256xx_get_term_curr,
.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
+ .bq256xx_set_ts_ignore = NULL,

.bq256xx_set_ichg = bq256xx_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
@@ -1316,6 +1330,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_ts_ignore = NULL,

.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1346,6 +1361,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_ts_ignore = NULL,

.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1376,6 +1392,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_ts_ignore = NULL,

.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1406,6 +1423,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,

.bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1436,6 +1454,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq25618_619_set_term_curr,
.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,

.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1466,6 +1485,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq25618_619_set_term_curr,
.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,

.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1582,6 +1602,12 @@ static int bq256xx_hw_init(struct bq256xx_device *bq)
if (ret)
return ret;

+ if (bq->chip_info->bq256xx_set_ts_ignore) {
+ ret = bq->chip_info->bq256xx_set_ts_ignore(bq, bq->init_data.ts_ignore);
+ if (ret)
+ return ret;
+ }
+
power_supply_put_battery_info(bq->charger, bat_info);

return 0;
@@ -1616,6 +1642,8 @@ static int bq256xx_parse_dt(struct bq256xx_device *bq,
if (ret)
bq->init_data.iindpm = bq->chip_info->bq256xx_def_iindpm;

+ bq->init_data.ts_ignore = device_property_read_bool(bq->dev, "ti,no-thermistor");
+
return 0;
}

--
2.30.2