[PATCH] power: supply: bq256xx: Apply TS_IGNORE from devicetree

[Hermes Zhang]

TS_IGNORE is default off in bq256xx chip. For some battery the default
JEITA profile is too simple to fullfill the battery requirement, so it's
better to disable the JEITA profile (by set TS_IGNORE to on) and let
user space to control the charging parameters base on the condition
(e.g. temperature)

Signed-off-by: Hermes Zhang <chenhuiz@xxxxxxxx>
---
 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..abd728032910 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, "ts-ignore");
+
 	return 0;
 }
 
-- 
2.30.2