Re: [PATCH v3 00/30] IIO-based thermal sensor driver for Allwinner H3 and A83T SoC

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On Tue, Mar 19, 2019 at 12:30:25PM +0000, Måns Rullgård wrote:
> Philipp Rossak <embed3d@xxxxxxxxx> writes:
>
> > Allwiner H3 and A83T SoCs have a thermal sensor, which is a large refactored
> > version of the old Allwinner "GPADC" (although it have already only
> > thermal part left in A33).
> >
> > This patch tried to add support for the sensor in H3 and A83T based on
> >
> > This Patchtseries was in the beginning based on Icenowy Zengs v4 patchseries [1]. Since we decided to merge the mfd driver into the GPADC this changed. So only one patch could be reused.
> >
> > Patches that adds support for H5, A64, A80 and H6 SoCs are allready prepared,
> > and will be upstreamed if this patchseries is applied and the testing is done.
> >
> > Sorry for delaying this.
> >
> > Regards,
> > Philipp
> >
> > changes since v2:
> > 	* mfd driver is now merged into the gpadc driver
> > 	* complete rework
> >
> > changes since v1:
> > 	* collecting all acks
> > 	* rewording commits/fix typos
> > 	* move code in place where it is used
> > 	* fix naming conventions of defines
> > 	* clarify commits
> > 	* update documentation to cover the new nvmem calibraion
> > 	* change nvmem calibration
> >
> > Icenowy Zheng (1):
> >   iio: adc: sun4i-gpadc-iio: rename A33-specified registers to contain
> >     A33
> >
> > Philipp Rossak (29):
> >   mfd: Makefile: Remove build option for MFD:sun4i-gpadc
> >   mfd: Kconfig: Remove MFD_SUN4I_GPADC config option
> >   iio: adc: Remove ID table
> >   iio: adc: Kconfig: Update Kconfig to new build options
> >   iio: adc: move SUN4I_GPADC_CHANNEL define to header file
> >   iio: adc: remove ofnode options
> >   iio: adc: remove mfd_probe & sunwi_irq_init function
> >   iio: adc: remove hwmon structure
> >   iio: adc: Threat A33 as thermal sensor and remove non thermal sun4i
> >     channel
> >   iio: adc: rework irq and adc_channel handling
> >   iio: adc: add new compatibles
> >   mfd: Remove old mfd driver & Move sun4i-gpadc.h to iio/adc/
> >   arm: config: Enable SUN4I_GPADC in defconfig
> >   dt-bindings: update the Allwinner GPADC device tree binding for H3 &
> >     A83T
> >   iio: adc: sun4i-gpadc-iio: rework: readout temp_data
> >   iio: adc: sun4i-gpadc-iio: rework: support clocks and reset
> >   iio: adc: sun4i-gpadc-iio: rework: support multiple sensors
> >   iio: adc: sun4i-gpadc-iio: rework: support nvmem calibration data
> >   iio: adc: sun4i-gpadc-iio: rework: device specific suspend & resume
> >   iio: adc: sun4i-gpadc-iio: add support for H3 thermal sensor
> >   iio: adc: sun4i-gpadc-iio: add support for A83T thermal sensor
> >   ARM: dts: sunxi-h3-h5: add support for the thermal sensor in H3 and H5
> >   ARM: dts: sun8i: h3: add support for the thermal sensor in H3
> >   ARM: dts: sun8i: h3: add thermal zone to H3
> >   ARM: dts: sun8i: h3: enable H3 sid controller
> >   ARM: dts: sun8i: h3: use calibration for ths
> >   ARM: dts: sun8i: a83t: add support for the thermal sensor in A83T
> >   ARM: dts: sun8i: a83t: add thermal zone to A83T
> >   ARM: sun8i: a83t: full range OPP tables and CPUfreq
> >
> >  .../devicetree/bindings/iio/adc/sun4i-gpadc.txt    |  41 +-
> >  arch/arm/boot/dts/sun8i-a83t.dtsi                  | 143 +++++
> >  arch/arm/boot/dts/sun8i-h3.dtsi                    |  52 ++
> >  arch/arm/boot/dts/sunxi-h3-h5.dtsi                 |  10 +
> >  arch/arm/configs/sunxi_defconfig                   |   1 +
> >  drivers/iio/adc/Kconfig                            |  11 +-
> >  drivers/iio/adc/sun4i-gpadc-iio.c                  | 617 +++++++++++++--------
> >  drivers/mfd/Kconfig                                |  17 -
> >  drivers/mfd/Makefile                               |   1 -
> >  drivers/mfd/sun4i-gpadc.c                          | 181 ------
> >  include/linux/{mfd => iio/adc}/sun4i-gpadc.h       |  47 +-
> >  11 files changed, 681 insertions(+), 440 deletions(-)
> >  delete mode 100644 drivers/mfd/sun4i-gpadc.c
> >  rename include/linux/{mfd => iio/adc}/sun4i-gpadc.h (72%)
>
> What became of these patches?  I can't seem to find any follow-ups.  Was
> the approach abandoned in favour of something else?

It didn't, I don't think we ever got any follow-up to that series so
that's the main reason it's been held back.

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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