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SubjectRe: [PATCH v5 0/4] add device drivers for Siemens Industrial PCs
Am Thu, 23 Dec 2021 18:17:03 +0100
schrieb Hans de Goede <hdegoede@redhat.com>:

> Hi,
>
> On 12/13/21 13:04, Henning Schild wrote:
> > changes since v4:
> > - make everything around GPIO memory usage more verbose
> > - commit messages, FIXME in p1, cover-letter
> >
> > changes since v3:
> >
> > - fix io access width and region reservations
> > - fix style in p1
> >
> > changes since v2:
> >
> > - remove "simatic-ipc" prefix from LED names
> > - fix style issues found in v2, mainly LED driver
> > - fix OEM specific dmi code, and remove magic numbers
> > - more "simatic_ipc" name prefixing
> > - improved pmc quirk code using callbacks
> >
> > changes since v1:
> >
> > - fixed lots of style issues found in v1
> > - (debug) printing
> > - header ordering
> > - fixed license issues GPLv2 and SPDX in all files
> > - module_platform_driver instead of __init __exit
> > - wdt simplifications cleanup
> > - lots of fixes in wdt driver, all that was found in v1
> > - fixed dmi length in dmi helper
> > - changed LED names to allowed ones
> > - move led driver to simple/
> > - switched pmc_atom to dmi callback with global variable
> >
> >
> > This series adds support for watchdogs and leds of several x86
> > devices from Siemens.
> >
> > It is structured with a platform driver that mainly does
> > identification of the machines. It might trigger loading of the
> > actual device drivers by attaching devices to the platform bus.
> >
> > The identification is vendor specific, parsing a special binary DMI
> > entry. The implementation of that platform identification is
> > applied on pmc_atom clock quirks in the final patch.
> >
> > It is all structured in a way that we can easily add more devices
> > and more platform drivers later. Internally we have some more code
> > for hardware monitoring, more leds, watchdogs etc. This will follow
> > some day.
> >
> > The LED as well as the watchdog drivers access GPIO memory directly.
> > Using pinctrl is not possible because the machines lack ACPI
> > entries for the pinctrl drivers. Updates to the ACPI tables are not
> > expected. So we can rule out a conflict where two drivers would try
> > and access that GPIO memory.
> > So we do not use those pins as "general purpose" but as "Siemens
> > purpose", after having identified the devices very clearly.
> >
> > Henning Schild (4):
> > platform/x86: simatic-ipc: add main driver for Siemens devices
> > leds: simatic-ipc-leds: add new driver for Siemens Industial PCs
> > watchdog: simatic-ipc-wdt: add new driver for Siemens Industrial
> > PCs platform/x86: pmc_atom: improve critclk_systems matching for
> > Siemens PCs
>
>
> Thank you for your patch-series, I've applied the series to my
> review-hans branch:
> https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
>
> Note it will show up in my review-hans branch once I've pushed my
> local branch there, which might take a while.
>
> Once I've run some tests on this branch the patches there will be
> added to the platform-drivers-x86/for-next branch and eventually
> will be included in the pdx86 pull-request to Linus for the next
> merge-window.

Cool! Thanks all for the reviews and for allowing the drivers in. Stay
tuned for more.

regards,
Henning

> Regards,
>
> Hans
>
>
> >
> > drivers/leds/Kconfig | 3 +
> > drivers/leds/Makefile | 3 +
> > drivers/leds/simple/Kconfig | 11 +
> > drivers/leds/simple/Makefile | 2 +
> > drivers/leds/simple/simatic-ipc-leds.c | 202
> > ++++++++++++++++ drivers/platform/x86/Kconfig |
> > 12 + drivers/platform/x86/Makefile | 3 +
> > drivers/platform/x86/pmc_atom.c | 54 +++--
> > drivers/platform/x86/simatic-ipc.c | 176 ++++++++++++++
> > drivers/watchdog/Kconfig | 11 +
> > drivers/watchdog/Makefile | 1 +
> > drivers/watchdog/simatic-ipc-wdt.c | 228
> > ++++++++++++++++++ .../platform_data/x86/simatic-ipc-base.h |
> > 29 +++ include/linux/platform_data/x86/simatic-ipc.h | 72 ++++++
> > 14 files changed, 786 insertions(+), 21 deletions(-)
> > create mode 100644 drivers/leds/simple/Kconfig
> > create mode 100644 drivers/leds/simple/Makefile
> > create mode 100644 drivers/leds/simple/simatic-ipc-leds.c
> > create mode 100644 drivers/platform/x86/simatic-ipc.c
> > create mode 100644 drivers/watchdog/simatic-ipc-wdt.c
> > create mode 100644
> > include/linux/platform_data/x86/simatic-ipc-base.h create mode
> > 100644 include/linux/platform_data/x86/simatic-ipc.h
>

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