linux-kernel - [PATCH v3 00/10] iio: adc: at91-sama5d2

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Message-ID: <20210901123013.329792-1-eugen.hristev@microchip.com>
Date:   Wed, 1 Sep 2021 15:30:03 +0300
From:   Eugen Hristev <eugen.hristev@...rochip.com>
To:     <jic23@...nel.org>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <nicolas.ferre@...rochip.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <robh+dt@...nel.org>,
        <ludovic.desroches@...rochip.com>,
        Eugen Hristev <eugen.hristev@...rochip.com>
Subject: [PATCH v3 00/10] iio: adc: at91-sama5d2_adc: add support for sama7g5

Hi,

This series adds support for sama7g5.

The sama7g5 is slightly different from sama5d2, but has the same basic
operations. The register map is a bit different, so, I added some primitives
to differentiate between the two classes of hardware blocks (sama5d2-sam9x60
and sama7g5).

Sama7g5 has 16 channels ADC, no resistive touch, and extra features
(FIFOs, better oversampling , not implemented yet).

It is a rework of the series initially sent here:
https://marc.info/?l=linux-iio&m=161461656807826&w=2

Changes in v3:
updates for the channel indexes ABI
minor nitpicks fixes
fixed krobot report

Changes in v2:

I reworked this according to review by Jonathan, meaning that first I created
a no-op patch that will convert the driver to a more platform specific data
dedicated type of driver. This adds various structures that hold things like
register layout and channel information.
After this I created few patches that implement the main differences between
sama7g5 and older products: the end-of-conversion new register. I added
helper functions to make code more easy to read and more simple.
One the last patches adds the layout and channels for sama7g5.
At this moment in linux-next, the DT for sama7g5 and sama7g5ek is present,
and the last patches add and enable this node in DT for this board.

Eugen

Eugen Hristev (10):
  dt-bindings: iio: adc: at91-sama5d2: add compatible for sama7g5-adc
  iio: adc: at91-sama5d2_adc: initialize hardware after clock is started
  iio: adc: at91-sama5d2_adc: remove unused definition
  iio: adc: at91-sama5d2_adc: convert to platform specific data
    structures
  iio: adc: at91-sama5d2_adc: add support for separate end of conversion
    registers
  iio: adc: at91-sama5d2_adc: add helper for COR register
  iio: adc: at91-sama5d2_adc: add support for sama7g5 device
  iio: adc: at91-sama5d2_adc: update copyright and authors information
  ARM: dts: at91: sama7g5: add node for the ADC
  ARM: dts: at91: sama7g5ek: enable ADC on the board

 .../bindings/iio/adc/atmel,sama5d2-adc.yaml   |   1 +
 arch/arm/boot/dts/at91-sama7g5ek.dts          |   8 +
 arch/arm/boot/dts/sama7g5.dtsi                |  16 +
 drivers/iio/adc/at91-sama5d2_adc.c            | 594 ++++++++++++------
 4 files changed, 432 insertions(+), 187 deletions(-)

-- 
2.25.1