kernel/drivers/soc/mediatek/mtk-devapc.c, branch linux-6.9.y

soc/mediatek: mtk-devapc: Convert to platform remove callback returning void

2023-10-14T21:27:25Z

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. Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20230925095532.1984344-15-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König

soc: mediatek: Explicitly include correct DT includes

2023-08-12T08:31:01Z

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. Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20230803-dt-header-cleanups-for-soc-v2-19-d8de2cc88bff@kernel.org Signed-off-by: Arnd Bergmann

soc: mediatek: mtk-devapc: Switch to devm_clk_get_enabled()

2023-02-01T13:22:29Z

This driver does exactly devm_clk_get() and clk_prepare_enable() right after, which is exactly what devm_clk_get_enabled() does: clean that up by switching to the latter. This commit brings no functional changes. Signed-off-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20221006110935.59695-1-angelogioacchino.delregno@collabora.com Signed-off-by: Matthias Brugger

soc: mediatek: devapc: Add support for MT8186

2022-06-07T16:25:15Z

Add devapc data and compatible to support MT8186 devapc. Signed-off-by: Runyang Chen Signed-off-by: Rex-BC Chen Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Chun-Kuang Hu Tested-by: Chen-Yu Tsai Link: https://lore.kernel.org/r/20220504115501.3490-4-rex-bc.chen@mediatek.com Signed-off-by: Matthias Brugger

soc: mediatek: devapc: Separate register offsets from mtk_devapc_data

2022-06-07T16:25:15Z

The register offsets is the same between MT6779 and MT8186. To reuse the register offsets, we move these register offsets to another structure "mtk_devapc_regs_ofs". Signed-off-by: Rex-BC Chen Reviewed-by: Chun-Kuang Hu Reviewed-by: AngeloGioacchino Del Regno Tested-by: Chen-Yu Tsai Link: https://lore.kernel.org/r/20220504115501.3490-3-rex-bc.chen@mediatek.com Signed-off-by: Matthias Brugger

soc: mediatek: add missing MODULE_DEVICE_TABLE

2021-05-12T16:29:37Z

This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot Signed-off-by: Zou Wei Link: https://lore.kernel.org/r/1620705350-104687-1-git-send-email-zou_wei@huawei.com Signed-off-by: Matthias Brugger

soc: mediatek: add mt6779 devapc driver

2020-11-27T23:28:25Z

MediaTek bus fabric provides TrustZone security support and data protection to prevent slaves from being accessed by unexpected masters. The security violation is logged and sent to the processor for further analysis or countermeasures. Any occurrence of security violation would raise an interrupt, and it will be handled by mtk-devapc driver. The violation information is printed in order to find the murderer. Signed-off-by: Neal Liu Link: https://lore.kernel.org/r/1602732039-12179-3-git-send-email-neal.liu@mediatek.com Signed-off-by: Matthias Brugger