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path: root/drivers/soc/aspeed/aspeed-uart-routing.c
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2023-10-13soc/aspeed: Convert to platform remove callback returning voidUwe Kleine-König
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Andrew Jeffery <andrew@aj.id.au> Link: https://lore.kernel.org/r/20230925095532.1984344-2-u.kleine-koenig@pengutronix.de Link: https://lore.kernel.org/r/20230925095532.1984344-3-u.kleine-koenig@pengutronix.de Link: https://lore.kernel.org/r/20230925095532.1984344-4-u.kleine-koenig@pengutronix.de Link: https://lore.kernel.org/r/20230925095532.1984344-5-u.kleine-koenig@pengutronix.de Signed-off-by: Joel Stanley <joel@jms.id.au>
2023-08-30Merge tag 'soc-arm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds
Pull ARM SoC cleanups from Arnd Bergmann: "These are all minor cleanups for platform specific code in arch/arm/ and some of the associated drivers. The majority of these are work done by Rob Herring to improve the way devicetreee header files are handled" * tag 'soc-arm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (49 commits) ARM: davinci: Drop unused includes ARM: s5pv210: Explicitly include correct DT includes ARM: dove: Drop unused includes ARM: mvebu: Explicitly include correct DT includes Documentation/process: maintainer-soc: document dtbs_check requirement for Samsung MAINTAINER: samsung: document dtbs_check requirement for Samsung Documentation/process: maintainer-soc: add clean platforms profile MAINTAINERS: soc: reference maintainer profile ARM: nspire: Remove unused header file mmio.h ARM: nspire: Use syscon-reboot to handle restart soc: fsl: Explicitly include correct DT includes soc: xilinx: Explicitly include correct DT includes soc: sunxi: Explicitly include correct DT includes soc: rockchip: Explicitly include correct DT includes soc: mediatek: Explicitly include correct DT includes soc: aspeed: Explicitly include correct DT includes firmware: Explicitly include correct DT includes bus: Explicitly include correct DT includes ARM: spear: Explicitly include correct DT includes ARM: mvebu: Explicitly include correct DT includes ...
2023-08-12soc: aspeed: uart-routing: Use __sysfs_match_stringZev Weiss
The existing use of match_string() caused it to reject 'echo foo' due to the implicitly appended newline, which was somewhat ergonomically awkward and inconsistent with typical sysfs behavior. Using the __sysfs_* variant instead provides more convenient and consistent linefeed-agnostic behavior. Signed-off-by: Zev Weiss <zev@bewilderbeest.net> Fixes: c6807970c3bc ("soc: aspeed: Add UART routing support") Reviewed-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20230628083735.19946-2-zev@bewilderbeest.net Signed-off-by: Joel Stanley <joel@jms.id.au> Link: https://lore.kernel.org/r/20230810122941.231085-1-joel@jms.id.au Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-08-12soc: aspeed: Explicitly include correct DT includesRob Herring
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230803-dt-header-cleanups-for-soc-v2-18-d8de2cc88bff@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-10-22soc: aspeed: Add UART routing supportChia-Wei Wang
Add driver support for the UART routing control. Users can perform runtime configuration of the RX muxes among the UART controllers and the UART IO pins. The sysfs interface is also exported for the convenience of routing paths check and update. Signed-off-by: Oskar Senft <osk@google.com> Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com> Signed-off-by: Joel Stanley <joel@jms.id.au> Tested-by: Lei YU <yulei.sh@bytedance.com> Link: https://lore.kernel.org/r/20210927023053.6728-5-chiawei_wang@aspeedtech.com Link: https://lore.kernel.org/r/20211022000616.481772-1-joel@jms.id.au' Signed-off-by: Arnd Bergmann <arnd@arndb.de>