Add support for LEDs connected to the Intel Cherry Trail Whiskey Cove
PMIC. Charger and general-purpose LEDs are supported. Hardware blinking
is implemented, breathing is not.
This driver was tested with Lenovo Yoga Book notebook.
Changes by Hans de Goede (in response to review of v2):
- Since the PMIC is connected to the battery any changes we make to
the LED settings are permanent, even surviving reboot / poweroff.
Save LED1 register settings on probe() and if auto-/hw-control was
enabled on probe() restore the settings on remove() and shutdown().
- Delay switching LED1 to software control mode to first brightness write.
- Use dynamically allocated drvdata instead of a global drvdata variable.
- Ensure the LED is on when activating blinking.
- Fix CHT_WC_LED_EFF_BREATHING val ((3 << 1) rather then BIT(3)).
Link: https://lore.kernel.org/r/20190212205901.13037-2-jekhor@gmail.com
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Co-developed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230430195952.862527-2-hdegoede@redhat.com
Signed-off-by: Lee Jones <lee@kernel.org>
Network LEDs can exist in both the MAC and the PHY. Naming is
difficult because the netdev name is neither stable or unique, do to
commands like ip link set name eth42 dev eth0, and network
namesspaces.
Give some example names where the MAC and the PHY have unique names
based on device tree nodes, or PCI bus addresses.
Since the LED can be used for anything which Linux supports for LEDs,
avoid using names like activity or link, rather describe the location
on the RJ-45, of what the RJ-45 is expected to be used for, WAN/LAN
etc.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Player LEDs are commonly found on game controllers from Nintendo and Sony
to indicate a player ID across a number of LEDs. For example, "Player 2"
might be indicated as "-x--" on a device with 4 LEDs where "x" means on.
This patch introduces LED_FUNCTION_PLAYER1-5 defines to properly indicate
player LEDs from the kernel. Until now there was no good standard, which
resulted in inconsistent behavior across xpad, hid-sony, hid-wiimote and
other drivers. Moving forward new drivers should use LED_FUNCTION_PLAYERx.
Note: management of Player IDs is left to user space, though a kernel
driver may pick a default value.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
We have a list of valid functions, but LED names in sysfs are still
far from being consistent. Create list of "well known" LED names so we
nudge people towards using same LED names (except color) for same
functionality.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Luca Weiss