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The Kconfig currently controlling compilation of this code is:
drivers/leds/Kconfig:config LEDS_SYSCON
drivers/leds/Kconfig: bool "LED support for LEDs on system controllers"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
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syscon_node_to_regmap() returns a regmap or an ERR_PTR().
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
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Currently syscon LEDs will traverse the device tree looking for syscon devices
and if found, traverse any subnodes of these to identify matching children
and from there instantiate LED class devices.
This is not a good use of the Linux device model. Instead we have converted the
device trees to add the "simple-mfd" property to the MFD nexi spawning syscon
LEDs so that these will appear as platform devices in the system and we can
use the proper device probing mechanism.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Currently the syscon LED driver will only handle LEDs on the
first syscon found in the system. But there can be several of
them, so augment the driver to traverse all syscon nodes and
check for syscon LEDs on them.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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A chunk of text followed the copied license text, ehm, sorry
that kind of things happen from time to time.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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This makes it possible to create a set of LEDs from a syscon
MFD instance, which is lean mean and clean on the ARM
reference designs and can replace the Versatile LEDs driver
in the long run, as well as other custom syscon LEDs drivers.
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
[Fixed cocinelle warnings]
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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