diff options
| author |   Linus Walleij <linus.walleij@linaro.org> | 2017-04-04 14:08:19 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <jic23@kernel.org> | 2017-04-08 17:42:26 +0100 |
| commit | 63c3ecd946d4ae2879ec0d8c6dcb90132a74d831 (patch) | |
| tree | 6af7d4fe3eac974660209a23753f4e464fab19bb /drivers/iio/adc/Kconfig | |
| parent | iio: adc: break out common code from SPMI VADC (diff) | |
| download | linux-dev-63c3ecd946d4ae2879ec0d8c6dcb90132a74d831.tar.xz linux-dev-63c3ecd946d4ae2879ec0d8c6dcb90132a74d831.zip | |
iio: adc: add a driver for Qualcomm PM8xxx HK/XOADC
The Qualcomm PM8xxx PMICs contain a simpler ADC than its
successors (already in the kernel as qcom-spmi-vadc.c):
the HK/XO ADC (Housekeeping/Chrystal oscillator ADC).
As far as I can understand this is equal to the PMICs
using SSBI transport and encompass PM8018, PM8038,
PM8058, and PM8921, so this is shortly named PM8xxx.
This ADC monitors a bunch of on-board voltages and the die
temperature of the PMIC itself, but it can also be routed
to convert a few external MPPs (multi-purpose pins). On
the APQ8060 DragonBoard this feature is used to let this
ADC convert an analog ALS (Ambient Light Sensor) voltage
signal from a Capella CM3605 ALS into a LUX value.
Developed and tested with APQ8060 DragonBoard based on
Ivan's driver and Rama Krishna's patches. The SPMI VADC
driver is quite different, but share enough minor
functionality that I have split out to the common file
in a previous patch.
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: Ivan T. Ivanov <iivanov.xz@gmail.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/adc/Kconfig')
| -rw-r--r-- | drivers/iio/adc/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index d8ad694b4709..385fb732dade 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -499,6 +499,17 @@ config PALMAS_GPADC config QCOM_VADC_COMMON tristate +config QCOM_PM8XXX_XOADC + tristate "Qualcomm SSBI PM8xxx PMIC XOADCs" + depends on MFD_PM8XXX + select QCOM_VADC_COMMON + help + ADC driver for the XOADC portions of the Qualcomm PM8xxx PMICs + using SSBI transport: PM8018, PM8038, PM8058, PM8921. + + To compile this driver as a module, choose M here: the module + will be called qcom-pm8xxx-xoadc. + config QCOM_SPMI_IADC tristate "Qualcomm SPMI PMIC current ADC" depends on SPMI |