• Przemyslaw Marczak's avatar
    dm: adc: add simple ADC uclass implementation · 5decbf53
    Przemyslaw Marczak authored
    This commit adds:
    - new uclass id: UCLASS_ADC
    - new uclass driver: drivers/adc/adc-uclass.c
    
    The new uclass's API allows for ADC operation on:
    * single-channel with channel selection by a number
    * multti-channel with channel selection by bit mask
    
    ADC uclass's functions:
    * single-channel:
      - adc_start_channel()        - start channel conversion
      - adc_channel_data()         - get conversion data
      - adc_channel_single_shot()  - start/get conversion data
    * multi-channel:
      - adc_start_channels()       - start selected channels conversion
      - adc_channels_data()        - get conversion data
      - adc_channels_single_shot() - start/get conversion data for channels
                                     selected by bit mask
    * general:
      - adc_stop()      - stop the conversion
      - adc_vdd_value() - positive reference Voltage value with polarity [uV]
      - adc_vss_value() - negative reference Voltage value with polarity [uV]
      - adc_data_mask() - conversion data bit mask
    
    The device tree can provide below constraints/properties:
    - vdd-polarity-negative: if true: Vdd = vdd-microvolts * (-1)
    - vss-polarity-negative: if true: Vss = vss-microvolts * (-1)
    - vdd-supply:            phandle to Vdd regulator's node
    - vss-supply:            phandle to Vss regulator's node
    And optional, checked only if the above corresponding, doesn't exist:
      - vdd-microvolts:      positive reference Voltage [uV]
      - vss-microvolts:      negative reference Voltage [uV]
    Signed-off-by: default avatarPrzemyslaw Marczak <p.marczak@samsung.com>
    Cc: Simon Glass <sjg@chromium.org>
    Signed-off-by: default avatarMinkyu Kang <mk7.kang@samsung.com>
    5decbf53
Name
Last commit
Last update
Licenses Loading commit data...
api Loading commit data...
arch Loading commit data...
board Loading commit data...
common Loading commit data...
configs Loading commit data...
disk Loading commit data...
doc Loading commit data...
drivers Loading commit data...
dts Loading commit data...
examples Loading commit data...
fs Loading commit data...
include Loading commit data...
lib Loading commit data...
net Loading commit data...
post Loading commit data...
scripts Loading commit data...
test Loading commit data...
tools Loading commit data...
.checkpatch.conf Loading commit data...
.gitignore Loading commit data...
.mailmap Loading commit data...
.travis.yml Loading commit data...
Kbuild Loading commit data...
Kconfig Loading commit data...
MAINTAINERS Loading commit data...
MAKEALL Loading commit data...
Makefile Loading commit data...
README Loading commit data...
config.mk Loading commit data...
snapshot.commit Loading commit data...