This contains mostly various fixes, cleanups and some conversions to the
atomic API. One noteworthy change is that PWM consumers can now pass a
hint to the PWM core about the PWM usage, enabling PWM providers to
implement various optimizations.
There's also a fair bit of simplification here with the addition of some
device-managed helpers as well as unification between the DT and ACPI
firmware interfaces.
-----BEGIN PGP SIGNATURE-----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=Hns1
-----END PGP SIGNATURE-----
Merge tag 'pwm/for-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"This contains mostly various fixes, cleanups and some conversions to
the atomic API. One noteworthy change is that PWM consumers can now
pass a hint to the PWM core about the PWM usage, enabling PWM
providers to implement various optimizations.
There's also a fair bit of simplification here with the addition of
some device-managed helpers as well as unification between the DT and
ACPI firmware interfaces"
* tag 'pwm/for-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (50 commits)
pwm: Remove redundant assignment to pointer pwm
pwm: ep93xx: Fix read of uninitialized variable ret
pwm: ep93xx: Prepare clock before using it
pwm: ep93xx: Unfold legacy callbacks into ep93xx_pwm_apply()
pwm: ep93xx: Implement .apply callback
pwm: vt8500: Only unprepare the clock after the pwmchip was removed
pwm: vt8500: Drop if with an always false condition
pwm: tegra: Assert reset only after the PWM was unregistered
pwm: tegra: Don't needlessly enable and disable the clock in .remove()
pwm: tegra: Don't modify HW state in .remove callback
pwm: tegra: Drop an if block with an always false condition
pwm: core: Simplify some devm_*pwm*() functions
pwm: core: Remove unused devm_pwm_put()
pwm: core: Unify fwnode checks in the module
pwm: core: Reuse fwnode_to_pwmchip() in ACPI case
pwm: core: Convert to use fwnode for matching
docs: firmware-guide: ACPI: Add a PWM example
dt-bindings: pwm: pwm-tiecap: Add compatible string for AM64 SoC
dt-bindings: pwm: pwm-tiecap: Convert to json schema
pwm: sprd: Don't check the return code of pwmchip_remove()
...
When PWM support for ACPI has been added into the kernel, it missed
the documentation update. Hence update documentation here.
Fixes: 4a6ef8e37c ("pwm: Add support referencing PWMs from ACPI")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
For "fixed" PCI devices, such as chips directly soldered
on the main board (ethernet, Wi-Fi, serial ports, etc.),
it is possible to find an ACPI enumeration.
This allows to add useful properties to these devices.
Just for an example: the property "gpio-line-names" can be
added to the pins of a GPIO expander on the PCI bus.
In order to find the ACPI name of a PCI device, it's necessary
to disassemble the BIOS ACPI tables (in particular the DSDT)
and also to analyze the PCI bus topology of the board.
This patch, with a practical example, show how to do this.
Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
dma_request_chan() is the preferred API to request slave channels.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
While this is stated as obsoleted, the sysfs interface described
there is still valid, and belongs to the admin-guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Mostly due to x86 and acpi conversion, several documentation
links are still pointing to the old file. Fix them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Wolfram Sang <wsa@the-dreams.de>
Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com>
Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The conversion of acpi/enumeration.txt to RST included one markup error,
leading to many warnings like:
.../firmware-guide/acpi/enumeration.rst:430: WARNING: Unexpected indentation.
Add the missing colon and create some peace.
Fixes: c24bc66e81 ("Documentation: ACPI: move enumeration.txt to firmware-guide/acpi and convert to reST")
Cc: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This converts the plain text documentation to reStructuredText format
and adds it to Sphinx TOC tree.
No essential content change.
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-04-25 23:07:19 +02:00
Renamed from Documentation/acpi/enumeration.txt (Browse further)
