linux-kernel - [PATCH v3 0/6] iio: light: stk3310: support powering off during suspend

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241028142000.1058149-1-aren@peacevolution.org>
Date: Mon, 28 Oct 2024 10:19:54 -0400
From: Aren Moynihan <aren@...cevolution.org>
To: Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>
Cc: Aren Moynihan <aren@...cevolution.org>,
	Kaustabh Chakraborty <kauschluss@...root.org>,
	Barnabás Czémán <trabarni@...il.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Ondrej Jirman <megi@....cz>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	Dragan Simic <dsimic@...jaro.org>,
	phone-devel@...r.kernel.org
Subject: [PATCH v3 0/6] iio: light: stk3310: support powering off during suspend

In the Pine64 PinePhone, the stk3310 chip is powered by a regulator that is
disabled at system boot and can be shut off during suspend. To ensure that
the chip properly initializes, both after boot and suspend, we need to
manage this regulator.

Additionally if the chip is shut off in suspend, we need to make sure that
it gets reinitialized with the same parameters after resume.

Major changes in v3:
 - Use bulk regulators instead of two individual ones
 - Replace stk3310_remove with devm callbacks
 - Hopefully I haven't missed anything, it's been a while since I worked on this
   patch, and I didn't take good enough notes

Major changes in v2:
 - Add handling of the IR LED. I was hesitant to include this as it is the
   same as pull-up regulator for the i2c bus on the hardware I have, so I
   can't test it well. I think leaving it out is more likely to cause
   issues than including it.
 - Convert stk3310 to use dev_err_probe for errors.
 - Always enable / disable regulators and rely on dummy devices if they're
   not specified.
 - more listed in individual patches

Aren Moynihan (5):
  dt-bindings: iio: light: stk33xx: add vdd and leda regulators
  iio: light: stk3310: handle all remove logic with devm callbacks
  iio: light: stk3310: Implement vdd and leda supplies
  iio: light: stk3310: use dev_err_probe where possible
  iio: light: stk3310: log error if reading the chip id fails

Ondrej Jirman (1):
  arm64: dts: allwinner: pinephone: Add power supplies to stk3311

 .../bindings/iio/light/stk33xx.yaml           |   4 +
 .../dts/allwinner/sun50i-a64-pinephone.dtsi   |   2 +
 drivers/iio/light/stk3310.c                   | 156 +++++++++++++-----
 3 files changed, 118 insertions(+), 44 deletions(-)

-- 
2.47.0