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power: supply: rt9471: Use IC status regfield to report real charger status

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BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit c46a9ee5c6210682611d3d4276436c23a95e1996 ]

Use IC status regfield to rewrite the 'get_staus' function. The original
one cannot cover some special scenario like as charger OTG or JEITA case.

Fixes: 4a1a5f6781 ("power: supply: rt9471: Add Richtek RT9471 charger driver")
Reported-by: Lucas Tsai <lucas_tsai@richtek.com>
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/67ba92bb4a9c51d9cafadab30b788a3a2c3048e1.1727252762.git.cy_huang@richtek.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
ChiYuan Huang
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 9737ce44ea
commit e6c7a181ec
1 changed files with 31 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/power/supply/rt9471.c
+31 -17
View File
@@ -139,6 +139,19 @@ enum {
RT9471_PORTSTAT_DCP,
};
enum {
RT9471_ICSTAT_SLEEP = 0,
RT9471_ICSTAT_VBUSRDY,
RT9471_ICSTAT_TRICKLECHG,
RT9471_ICSTAT_PRECHG,
RT9471_ICSTAT_FASTCHG,
RT9471_ICSTAT_IEOC,
RT9471_ICSTAT_BGCHG,
RT9471_ICSTAT_CHGDONE,
RT9471_ICSTAT_CHGFAULT,
RT9471_ICSTAT_OTG = 15,
};
struct rt9471_chip {
struct device *dev;
struct regmap *regmap;
@@ -255,31 +268,32 @@ static int rt9471_get_ieoc(struct rt9471_chip *chip, int *microamp)
static int rt9471_get_status(struct rt9471_chip *chip, int *status)
{
unsigned int chg_ready, chg_done, fault_stat;
unsigned int ic_stat;
int ret;
ret = regmap_field_read(chip->rm_fields[F_ST_CHG_RDY], &chg_ready);
ret = regmap_field_read(chip->rm_fields[F_IC_STAT], &ic_stat);
if (ret)
return ret;
ret = regmap_field_read(chip->rm_fields[F_ST_CHG_DONE], &chg_done);
if (ret)
return ret;
ret = regmap_read(chip->regmap, RT9471_REG_STAT1, &fault_stat);
if (ret)
return ret;
fault_stat &= RT9471_CHGFAULT_MASK;
if (chg_ready && chg_done)
*status = POWER_SUPPLY_STATUS_FULL;
else if (chg_ready && fault_stat)
switch (ic_stat) {
case RT9471_ICSTAT_VBUSRDY:
case RT9471_ICSTAT_CHGFAULT:
*status = POWER_SUPPLY_STATUS_NOT_CHARGING;
else if (chg_ready && !fault_stat)
break;
case RT9471_ICSTAT_TRICKLECHG ... RT9471_ICSTAT_BGCHG:
*status = POWER_SUPPLY_STATUS_CHARGING;
else
break;
case RT9471_ICSTAT_CHGDONE:
*status = POWER_SUPPLY_STATUS_FULL;
break;
case RT9471_ICSTAT_SLEEP:
case RT9471_ICSTAT_OTG:
*status = POWER_SUPPLY_STATUS_DISCHARGING;
break;
default:
*status = POWER_SUPPLY_STATUS_UNKNOWN;
break;
}
return 0;
}