ARM: qcom: Add coincell charger driver

This driver is used to configure the coincell charger found in
Qualcomm PMICs.

The driver allows configuring the current-limiting resistor for
the charger, as well as the voltage to apply to the coincell
(or capacitor) when charging.

Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Reviewed-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 42c38525904b..ccccc2943f2f 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -271,6 +271,16 @@ config HP_ILO
           To compile this driver as a module, choose M here: the
           module will be called hpilo.
 
+config QCOM_COINCELL
+        tristate "Qualcomm coincell charger support"
+        depends on MFD_SPMI_PMIC || COMPILE_TEST
+        help
+          This driver supports the coincell block found inside of
+          Qualcomm PMICs.  The coincell charger provides a means to
+          charge a coincell battery or backup capacitor which is used
+          to maintain PMIC register and RTC state in the absence of
+          external power.
+
 config SGI_GRU
         tristate "SGI GRU driver"
         depends on X86_UV && SMP