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iio: adc: add support for X-Powers AXP20X and AXP22X PMICs ADCs

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The X-Powers AXP20X and AXP22X PMICs have multiple ADCs. They expose the
battery voltage, battery charge and discharge currents, AC-in and VBUS
voltages and currents, 2 GPIOs muxable in ADC mode and PMIC temperature.

This adds support for most of AXP20X and AXP22X ADCs.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Quentin Schulz
2017-04-04 08:34:41 +02:00
committed by Lee Jones
parent be269180c9
commit 0e34d5de96
3 changed files with 628 additions and 0 deletions
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10
drivers/iio/adc/Kconfig
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@@ -154,6 +154,16 @@ config AT91_SAMA5D2_ADC
To compile this driver as a module, choose M here: the module will be
called at91-sama5d2_adc.
config AXP20X_ADC
tristate "X-Powers AXP20X and AXP22X ADC driver"
depends on MFD_AXP20X
help
Say yes here to have support for X-Powers power management IC (PMIC)
AXP20X and AXP22X ADC devices.
To compile this driver as a module, choose M here: the module will be
called axp20x_adc.
config AXP288_ADC
tristate "X-Powers AXP288 ADC driver"
depends on MFD_AXP20X

1
drivers/iio/adc/Makefile
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@@ -16,6 +16,7 @@ obj-$(CONFIG_AD7887) += ad7887.o
obj-$(CONFIG_AD799X) += ad799x.o
obj-$(CONFIG_AT91_ADC) += at91_adc.o
obj-$(CONFIG_AT91_SAMA5D2_ADC) += at91-sama5d2_adc.o
obj-$(CONFIG_AXP20X_ADC) += axp20x_adc.o
obj-$(CONFIG_AXP288_ADC) += axp288_adc.o
obj-$(CONFIG_BCM_IPROC_ADC) += bcm_iproc_adc.o
obj-$(CONFIG_BERLIN2_ADC) += berlin2-adc.o

617
drivers/iio/adc/axp20x_adc.c Normal file
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