The chip returns voltage and current in mV and mA, but
power supply class uses uV and uA, so add missing conversion.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

The BQ27x00 series of chips can report time-to-empty and
time-to-full, so let's add corresponding properties.
Also report charge status based on status flag register.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

BQ27500 is newer fuel gauge chip from TI with slightly changed
register layout and some different register semantics. Add new i2c
ID for it and handle differences where needed. Also rename bq27200
functions to bq27x00, as they are no longer bq27200 specific.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

The power supply class requires tenths of degree Celsius.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

These are probably leftover from old TI code.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

The bq27x00 registers are little endian, so just read them as such
and don't do double endian swap on LE machines.

This also gets rid of strange looking shift that was done after
reading 8bit register because endian swap in bq27x00_read() was
messing it up.
Signed-off-by: NGrazvydas Ignotas <notasas@gmail.com>
Acked-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

A few comments say "Celcius"; this fixes them. No code changes.
Signed-off-by: NAdam Buchbinder <adam.buchbinder@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Remove hand-rolled get_unaligned_be16, this points to a possible bug as
bq27x00_read does another endian byteswap which sparse notices:

drivers/power/bq27x00_battery.c:81:14: warning: cast to restricted __be16
Which should probably be checked.
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

These battery managers came in two different packages: one for I2C
busses (BQ27200) and one for HDQ busses (BQ27000).

This driver currently supports only the I2C chip version but the code
is designed in order to easily allow the HDQ chip version integration.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: make things static, use kasprintf()]
Signed-off-by: NRodolfo Giometti <giometti@linux.it>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>