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.
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Merge tag 'platform-remove-void-soc-for-6.7-rc' of https://git.pengutronix.de/git/ukl/linux into soc/drivers
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 <arnd@arndb.de>
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 <u.kleine-koenig@pengutronix.de>
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 <zhoubinbin@loongson.cn>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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 <zhoubinbin@loongson.cn>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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 <rdunlap@infradead.org>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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 <liuyun@loongson.cn>
Signed-off-by: Liu Yun <liuyun@loongson.cn>
Co-developed-by: Liu Peibao <liupeibao@loongson.cn>
Signed-off-by: Liu Peibao <liupeibao@loongson.cn>
Cc: soc@kernel.org
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>
Link: https://lore.kernel.org/r/20230803063703.5659-3-zhuyinbo@loongson.cn
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The global utilities block controls PCIE device enabling, alternate
function selection for multiplexed signals, consistency of HDA, USB
and PCIE, configuration of memory controller, rtc controller, lio
controller, and clock control.
This patch adds a driver to manage and access global utilities block
for LoongArch architecture Loongson-2 SoCs. Initially only reading SVR
and registering soc device are supported. Other guts accesses, such
as reading firmware configuration by default, should eventually be
added into this driver as well.
Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
