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Revert "bq27x00_battery: Fix reporting status value for bq27500 battery" 

This reverts commit 270968c098.

Grazvydas Ignotas wrote:

After 270968c098 "bq27x00_battery: Fix reporting status value for
bq27500 battery" status doesn't seem to be reported correctly when the
battery is close to fully charged state. It reports "Not charging"
while in fact there is >130mA current flowing to the battery according
to current_now.

This status report seems to be based on CHG bit in status register,
but looking at the datasheet the description says "(Fast) charging
allowed", which I guess means that the chip recommends charging and
not that charging is actually going on? If you check the bit while
battery is discharging and it's not full, the bit is also set.

Suggested-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
Anton Vorontsov 2012-02-01 21:20:15 +04:00
parent 62aa2b537c
commit b7aaacf56a
1 changed files with 4 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/power/bq27x00_battery.c
View File

@ -62,11 +62,10 @@
#define BQ27500_REG_SOC 0x2C
#define BQ27500_REG_DCAP 0x3C /* Design capacity */
#define BQ27500_FLAG_DSG BIT(0) /* Discharging */
#define BQ27500_FLAG_DSC BIT(0)
#define BQ27500_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
#define BQ27500_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
#define BQ27500_FLAG_CHG BIT(8) /* Charging */
#define BQ27500_FLAG_FC BIT(9) /* Fully charged */
#define BQ27500_FLAG_FC BIT(9)
#define BQ27000_RS 20 /* Resistor sense */
@ -401,14 +400,10 @@ static int bq27x00_battery_status(struct bq27x00_device_info *di,
if (di->chip == BQ27500) {
if (di->cache.flags & BQ27500_FLAG_FC)
status = POWER_SUPPLY_STATUS_FULL;
else if (di->cache.flags & BQ27500_FLAG_DSG)
else if (di->cache.flags & BQ27500_FLAG_DSC)
status = POWER_SUPPLY_STATUS_DISCHARGING;
else if (di->cache.flags & BQ27500_FLAG_CHG)
status = POWER_SUPPLY_STATUS_CHARGING;
else if (power_supply_am_i_supplied(&di->bat))
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
else
status = POWER_SUPPLY_STATUS_UNKNOWN;
status = POWER_SUPPLY_STATUS_CHARGING;
} else {
if (di->cache.flags & BQ27000_FLAG_FC)
status = POWER_SUPPLY_STATUS_FULL;