power: supply: max77693: Use devm_power_supply_register() helper

Use the device lifecycle managed register function. This helps prevent
mistakes like unregistering out of order in cleanup functions and
forgetting to unregister on error paths.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240129190246.73067-3-afd@ti.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

power: supply: max77693_charger: Convert to platform remove callback returning void

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() is 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>
Link: https://lore.kernel.org/r/20230918133700.1254499-20-u.kleine-koenig@pengutronix.de
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

power: supply: use sysfs_emit() instead of scnprintf() for sysfs show()

As documented in Documentation/filesystems/sysfs.rst the sysfs
show() function should use sysfs_emit() or sysfs_emit_at() to
format the userspace return value. This replaces all instances
of scnprintf() with sysfs_emit() in the power-supply subsystem.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
[reword commit message]
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

power: supply: maxim: Add SPDX license identifiers

Replace GPL v2.0 and v2.0+ license statements with SPDX license
identifiers.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

power: supply: max77693_charger: fix unintentional fall-through

It seems that a *break* is missing in order to avoid a fall-through.
Otherwise, the calculation of *data* makes no sense.

Addresses-Coverity-ID: 1271172 ("Missing break in switch")
Fixes: 87c2d9067893 ("power: max77693: Add charger driver for Maxim 77693")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

power: supply: Change Krzysztof Kozlowski's email to kernel.org

Change my email address to kernel.org instead of Samsung one for the
purpose of any future contact. The copyrights remain untouched and are
attributed to Samsung.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

power: move power supply drivers to power/supply

This moves all power supply drivers from drivers/power/
to drivers/power/supply/. The intention is a cleaner
source tree, since drivers/power/ also contains frameworks
unrelated to power supply, like adaptive voltage scaling.

Signed-off-by: Sebastian Reichel <sre@kernel.org>