diff options
| author | Puthikorn Voravootivat <puthik@chromium.org> | 2014-09-30 22:18:56 +0400 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2014-10-01 06:10:50 +0400 |
| commit | a3c0c3e79066c78b890c078998c8c6bd577f1d21 (patch) | |
| tree | 85ae7a455ff35c62df0ac44eaade8572705f7a65 /drivers/power | |
| parent | 18a702e0de9879d5c0225a09f494443f0b91a0cc (diff) | |
| download | linux-a3c0c3e79066c78b890c078998c8c6bd577f1d21.tar.xz | |
bq27x00_battery: Fix flag reading for bq27742
This patch fix the following issues.
- Flag for bq27742 is 2 bytes contracy to 1 byte for older hardware
- Don't read FLAG_CI as bq27742 does not have it
- Use Battery full capacity register as last measure discharge
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/bq27x00_battery.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index 5b9f0eacb20a..e3bacfe3bcd0 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -254,9 +254,11 @@ static inline int bq27x00_battery_read_nac(struct bq27x00_device_info *di) { int flags; bool is_bq27500 = di->chip == BQ27500; + bool is_bq27742 = di->chip == BQ27742; bool is_higher = bq27xxx_is_chip_version_higher(di); + bool flags_1b = !(is_bq27500 || is_bq27742); - flags = bq27x00_read(di, BQ27x00_REG_FLAGS, !is_bq27500); + flags = bq27x00_read(di, BQ27x00_REG_FLAGS, flags_1b); if (flags >= 0 && !is_higher && (flags & BQ27000_FLAG_CI)) return -ENODATA; @@ -436,13 +438,14 @@ static void bq27x00_update(struct bq27x00_device_info *di) bool is_bq27500 = di->chip == BQ27500; bool is_bq27425 = di->chip == BQ27425; bool is_bq27742 = di->chip == BQ27742; + bool flags_1b = !(is_bq27500 || is_bq27742); - cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, !is_bq27500); + cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, flags_1b); if ((cache.flags & 0xff) == 0xff) /* read error */ cache.flags = -1; if (cache.flags >= 0) { - if (!is_bq27500 && !is_bq27425 + if (!is_bq27500 && !is_bq27425 && !is_bq27742 && (cache.flags & BQ27000_FLAG_CI)) { dev_info(di->dev, "battery is not calibrated! ignoring capacity values\n"); cache.capacity = -ENODATA; @@ -470,9 +473,7 @@ static void bq27x00_update(struct bq27x00_device_info *di) bq27x00_battery_read_time(di, BQ27x00_REG_TTF); } - if (!is_bq27742) - cache.charge_full = - bq27x00_battery_read_lmd(di); + cache.charge_full = bq27x00_battery_read_lmd(di); cache.health = bq27x00_battery_read_health(di); } cache.temperature = bq27x00_battery_read_temperature(di); |