kernel/linux.git/drivers/soc/loongson, branch v6.18.22

soc: loongson: loongson2_guts: Add check for devm_kstrdup()

2025-02-20T21:29:05+00:00

Add check for the return value of devm_kstrdup() in loongson2_guts_probe() to catch potential exception. Fixes: b82621ac8450 ("soc: loongson: add GUTS driver for loongson-2 platforms") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li Link: https://lore.kernel.org/r/20250220081714.2676828-1-haoxiang_li2024@163.com Signed-off-by: Arnd Bergmann

soc: Switch back to struct platform_driver::remove()

2024-11-01T16:08:57+00:00

After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/soc to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. On the way do a few whitespace changes to make indention consistent. Signed-off-by: Uwe Kleine-König Acked-by: Heiko Stuebner Acked-by: Herve Codina # for fsl/qe/{qmc,tsa}.c Acked-by: Bjorn Andersson # qcom parts Acked-by: Gabriel Somlo Acked-by: Andrew Jeffery # aspeed Link: https://lore.kernel.org/r/20241029074859.509587-2-u.kleine-koenig@baylibre.com Signed-off-by: Arnd Bergmann

Merge tag 'platform-remove-void-soc-for-6.7-rc' of https://git.pengutronix.de/git/ukl/linux into soc/drivers

2023-10-16T20:51:31+00:00

Convert drivers/soc to struct platform_driver::remove_new() This PR contains the patches I sent in the series available at https://lore.kernel.org/all/20230925095532.1984344-1-u.kleine-koenig@pengutronix.de that were not yet picked up in next as of next-20231013. It converts all drivers below drivers/soc to let their remove callback return void. See commit 5c5a7680e67b ("platform: Provide a remove callback that returns no value") for the rationale. Signed-off-by: Arnd Bergmann

soc/loongson: loongson2_guts: Convert to platform remove callback returning void

2023-10-14T21:27:21+00:00

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. Link: https://lore.kernel.org/r/20230925095532.1984344-14-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König

soc: loongson: loongson2_guts: Remove unneeded semicolon

2023-09-27T09:05:47+00:00

No functional modification involved. ./drivers/soc/loongson/loongson2_guts.c:73:2-3: Unneeded semicolon. Reviewed-by: Huacai Chen Signed-off-by: Mingtong Bao Signed-off-by: Arnd Bergmann

soc: loongson: loongson2_guts: Convert to devm_platform_ioremap_resource()

2023-09-27T09:05:47+00:00

Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Dongliang Mu Signed-off-by: Binbin Zhou Signed-off-by: Arnd Bergmann

soc: loongson: loongson_pm2: Populate children syscon nodes

2023-09-27T09:05:19+00:00

The syscon poweroff and reboot nodes logically belong to the Power Management Unit so populate possible children. Without it, the reboot/poweroff feature becomes unavailable. Signed-off-by: Binbin Zhou Signed-off-by: Arnd Bergmann

soc: loongson: loongson_pm2: Drop useless of_device_id compatible

2023-09-27T09:05:19+00:00

Now, "loongson,ls2k0500-pmc" is used as fallback compatible, so the ls2k1000 compatible in the driver can be dropped directly. Signed-off-by: Binbin Zhou Signed-off-by: Arnd Bergmann

soc: loongson: loongson_pm2: Add dependency for INPUT

2023-09-27T09:05:19+00:00

Since commit 67694c076bd7 ("soc: loongson2_pm: add power management support"), the Loongson-2K PM driver was added, but it didn't update the Kconfig entry for the INPUT dependency, leading to build errors, so update the Kconfig entry to depend on INPUT. /opt/crosstool/gcc-13.2.0-nolibc/loongarch64-linux/bin/loongarch64-linux-ld: drivers/soc/loongson/loongson2_pm.o: in function `loongson2_power_button_init': /work/lnx/next/linux-next-20230825/LOONG64/../drivers/soc/loongson/loongson2_pm.c:101:(.text+0x350): undefined reference to `input_allocate_device' /opt/crosstool/gcc-13.2.0-nolibc/loongarch64-linux/bin/loongarch64-linux-ld: /work/lnx/next/linux-next-20230825/LOONG64/../drivers/soc/loongson/loongson2_pm.c:109:(.text+0x3dc): undefined reference to `input_set_capability' /opt/crosstool/gcc-13.2.0-nolibc/loongarch64-linux/bin/loongarch64-linux-ld: /work/lnx/next/linux-next-20230825/LOONG64/../drivers/soc/loongson/loongson2_pm.c:111:(.text+0x3e4): undefined reference to `input_register_device' /opt/crosstool/gcc-13.2.0-nolibc/loongarch64-linux/bin/loongarch64-linux-ld: /work/lnx/next/linux-next-20230825/LOONG64/../drivers/soc/loongson/loongson2_pm.c:125:(.text+0x3fc): undefined reference to `input_free_device' /opt/crosstool/gcc-13.2.0-nolibc/loongarch64-linux/bin/loongarch64-linux-ld: drivers/soc/loongson/loongson2_pm.o: in function `input_report_key': /work/lnx/next/linux-next-20230825/LOONG64/../include/linux/input.h:425:(.text+0x58c): undefined reference to `input_event' Reported-by: Randy Dunlap Signed-off-by: Binbin Zhou Signed-off-by: Arnd Bergmann

soc: loongson2_pm: add power management support

2023-08-22T00:52:46+00:00

The Loongson-2's power management controller was ACPI, supports ACPI S2Idle (Suspend To Idle), ACPI S3 (Suspend To RAM), ACPI S4 (Suspend To Disk), ACPI S5 (Soft Shutdown) and supports multiple wake-up methods (USB, GMAC, PWRBTN, etc.). This driver was to add power management controller support that base on dts for Loongson-2 series SoCs. Co-developed-by: Liu Yun Signed-off-by: Liu Yun Co-developed-by: Liu Peibao Signed-off-by: Liu Peibao Cc: soc@kernel.org Cc: Ulf Hansson Signed-off-by: Yinbo Zhu Link: https://lore.kernel.org/r/20230803063703.5659-3-zhuyinbo@loongson.cn Signed-off-by: Arnd Bergmann