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Subject[PATCH] bq27x00_battery: fix register offset for bq27425
Date
- SOC is at 0x1C so we must add 0x4 as stated in the comment to read the
right value.
- DCAP is at 0x3c so we also must use a value with the right offset to get
the correct design capacity.

Actually testing on a bq27410 which has the same register map as bq27425
(but adds new registers).

Signed-off-by: Eric Bénard <eric@eukrea.com>
---
drivers/power/bq27x00_battery.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index e3bacfe..ab18e96 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -76,7 +76,8 @@

/* bq27425 register addresses are same as bq27x00 addresses minus 4 */
#define BQ27425_REG_OFFSET 0x04
-#define BQ27425_REG_SOC 0x18 /* Register address plus offset */
+#define BQ27425_REG_SOC (0x1C + BQ27425_REG_OFFSET)
+#define BQ27425_REG_DCAP (0x3C + BQ27425_REG_OFFSET)

#define BQ27000_RS 20 /* Resistor sense */
#define BQ27x00_POWER_CONSTANT (256 * 29200 / 1000)
@@ -282,9 +283,12 @@ static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di)
{
int ilmd;

- if (bq27xxx_is_chip_version_higher(di))
- ilmd = bq27x00_read(di, BQ27500_REG_DCAP, false);
- else
+ if (bq27xxx_is_chip_version_higher(di)) {
+ if (di->chip == BQ27425)
+ ilmd = bq27x00_read(di, BQ27425_REG_DCAP, false);
+ else
+ ilmd = bq27x00_read(di, BQ27500_REG_DCAP, false);
+ } else
ilmd = bq27x00_read(di, BQ27000_REG_ILMD, true);

if (ilmd < 0) {
--
2.1.1
--
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