target/linux/s3c24xx/patches-2.6.24/1088-introduce-bq27000-battery-driver.patch.patch

   1 From 7b70de51df68659d3789481cf2446f8bc01e5387 Mon Sep 17 00:00:00 2001
   2 From: Andy Green <andy@openmoko.com>
   3 Date: Sun, 13 Apr 2008 07:25:48 +0100
   4 Subject: [PATCH] introduce-bq27000-battery-driver.patch
   5
   6 This is a driver for the bq27000 found in the Highcell A5
   7 battery, and the platform device stuff for it for GTA02.  It
   8 is a Power Supply Class battery device.
   9
  10 The driver doesn't contain an HDQ engine but accepts pointers
  11 from the platform data to the HDQ action routines; our
  12 platform data plugs it into the FIQ HDQ engine stuff.
  13
  14 The Power Supply class exposes the battery down /sys so you
  15 can find out battery status by doing the equivalent of this
  16 bash command
  17
  18 for i in capacity charge_full current_now present status technology temp time_to_empty_now time_to_full_now type voltage_now ; do echo -n "$i    " ; cat /sys/devices/platform/bq27000-battery.0/power_supply/bat/$i ; done
  19
  20 Here is the kind of result you get from a battery discharging
  21
  22 capacity    0
  23 charge_full    1215585
  24 current_now    183375
  25 present    1
  26 status    Discharging
  27 technology    Li-ion
  28 temp    276
  29 time_to_empty_now    0
  30 time_to_full_now    3932100
  31 type    Battery
  32 voltage_now    2761000
  33
  34 Note that temp is in 1/10 degrees C, other values are in uV,
  35 uA, uW.  The time_to_* reported are bogus, but that is what
  36 the battery actually reports.
  37
  38 We can make more mappings to entries in power_supply class
  39 but this is enough to get started with.
  40
  41 Signed-off-by: Andy Green <andy@openmoko.com>
  42 ---
  43  defconfig-2.6.24      |    1 +
  44  drivers/power/Kconfig |    7 -------
  45  2 files changed, 1 insertions(+), 7 deletions(-)
  46
  47 diff --git a/defconfig-2.6.24 b/defconfig-2.6.24
  48 index 6d750a5..9467f4b 100644
  49 --- a/defconfig-2.6.24
  50 +++ b/defconfig-2.6.24
  51 @@ -1826,3 +1826,4 @@ CONFIG_PLIST=y
  52  CONFIG_HAS_IOMEM=y
  53  CONFIG_HAS_DMA=y
  54  CONFIG_GTA02_HDQ=y
  55 +CONFIG_BATTERY_BQ27000_HDQ=y
  56 diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
  57 index 5ace872..8c50ecb 100644
  58 --- a/drivers/power/Kconfig
  59 +++ b/drivers/power/Kconfig
  60 @@ -64,10 +64,3 @@ config GTA02_HDQ
  61
  62  endif # POWER_SUPPLY
  63
  64 -config GTA02_HDQ
  65 -       tristate "Neo Freerunner HDQ"
  66 -       depends on MACH_NEO1973_GTA02 && FIQ && S3C2440_C_FIQ
  67 -       help
  68 -         Say Y to enable support for communicating with an HDQ battery
  69 -         on the Neo Freerunner.  You probably want to select
  70 -         at least BATTERY_BQ27000_HDQ as well
  71 --
  72 1.5.6.5
  73