A few adc drivers cannot build without access to some platform specific
header files. Express those requirements in Kconfig as well.

Signed-off-by: Tom Rini <trini@konsulko.com>

What model of Radxa ZERO 3W/3E board can be identified using ADC at
runtime, add a Kconfig symbol to allow use of ADC in SPL.

This will be used to identify board model in SPL to allow loading
correct FIT configuration and FDT for U-Boot proper at SPL phase.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

The ADC controller drivers are obviously all depending on ADC symbol
being selected.

While they don't seem to fail to build without, they won't be useful
without that symbol selected, so let's make sure the options aren't
shown in menuconfig when ADC isn't selected.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>

The i.MX93 11x11 EVK fails to boot with following error:

 Model: NXP i.MX93 11X11 EVK board
 DRAM:  2 GiB
 Error binding driver 'imx93-adc': -96
 Some drivers failed to bind
 Error binding driver 'simple_bus': -96
 Some drivers failed to bind
 Error binding driver 'simple_bus': -96
 Some drivers failed to bind
 initcall sequence 00000000fffb8f28 failed at call 000000008021e0d4 (err=-96)
 ### ERROR ### Please RESET the board ###

That's because since commit e7ff54d96303 ("imx93_evk: defconfig: add adc
support") CONFIG_ADC_IMX93 is enabled but CONFIG_ADC is not.
Fix this by enabling CONFIG_ADC in imx93_11x11_evk_defconfig.

Make sure this situation won't happen again in future i.MX93 defconfig by
making CONFIG_ADC_IMX93 depend on CONFIG_ADC.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

This commit adds driver for iMX93 ADC.

The driver is implemented using driver model and provides
ADC uclass's methods for ADC single channel operations:
    - adc_start_channel()
    - adc_channel_data()
    - adc_stop()

ADC features:
    - channels: 4
    - resolution: 12-bit

Signed-off-by: Luca Ellero <l.ellero@asem.it>
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>

This patch adds support for STMicroelectronics STM32 ADC (analog to
digital converter). It's originally based on Linux kernel v4.18-rcs
drivers/iio/adc/stm32-adc*. It's composed of:
- core driver (UCLASS_SIMPLE_BUS) manages common resources (clk, regu).
- child drivers (UCLASS_ADC) declare each ADC, channels and handle
  conversions.
This driver currently supports STM32H7 and STM32MP1 ADC.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

This patch adds the driver for the Amlogic Meson Successive Approximation
Register (SAR) A/D Converter based on the Linux IIO driver thanks to the
great work of Martin Blumenstingl.
The driver has been adapted to U-Boot and the ADC UClass.

This patch depends on the regmap "regmap: add regmap_update_bits() helper"
patch and has been tested using the newly introducted "adc" CLI command
in the "cmd: add ADC cli commands" patch.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

The ADC can support some channels signal-ended some bits Successive Approximation
Register (SAR) A/D Converter, like 6-channel and 10-bit. It converts the analog
input signal into some bits binary digital codes.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

This commit adds implementation of Sandbox ADC device emulation.
The device provides:
- single and multi-channel conversion
- 4 channels with predefined conversion output data
- 16-bit resolution

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

This commit adds driver for Exynos54xx ADC subsystem.

The driver is implemented using driver model, amd provides
ADC uclass's methods for ADC single channel operations:
- adc_start_channel()
- adc_channel_data()
- adc_stop()

The basic parameters of ADC conversion, are:
- sample rate: 600KSPS
- output the data as average of 8 time conversion

ADC features:
- sample rate: 600KSPS
- resolution: 12-bit
- channels: 10 (analog multiplexer)

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>