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Grouping multiple monochrome LEDs into a multicolor LED device has a few benefits over handling the group in user-space: - The state of the LEDs relative to each other is consistent. In other words, if 2 threads competes to set the LED to green and red, the end-result cannot be black or yellow. - The multicolor LED as a whole can be driven through the sysfs LED interface. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler.com> Reviewed-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20230728153731.3742339-5-jjhiblot@traphandler.com Signed-off-by: Lee Jones <lee@kernel.org>
55 lines
1.9 KiB
Plaintext
55 lines
1.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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if LEDS_CLASS_MULTICOLOR
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config LEDS_GROUP_MULTICOLOR
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tristate "LEDs group multi-color support"
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depends on OF || COMPILE_TEST
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help
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This option enables support for monochrome LEDs that are grouped
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into multicolor LEDs which is useful in the case where LEDs of
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different colors are physically grouped in a single multi-color LED
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and driven by a controller that doesn't have multi-color support.
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To compile this driver as a module, choose M here: the module
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will be called leds-group-multicolor.
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config LEDS_PWM_MULTICOLOR
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tristate "PWM driven multi-color LED Support"
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depends on PWM
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help
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This option enables support for PWM driven monochrome LEDs that are
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grouped into multicolor LEDs.
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To compile this driver as a module, choose M here: the module
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will be called leds-pwm-multicolor.
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config LEDS_QCOM_LPG
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tristate "LED support for Qualcomm LPG"
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depends on OF
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depends on PWM
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depends on SPMI
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help
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This option enables support for the Light Pulse Generator found in a
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wide variety of Qualcomm PMICs. The LPG consists of a number of PWM
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channels and typically a shared pattern lookup table and a current
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sink, intended to drive RGB LEDs. Each channel can either be used as
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a LED, grouped to represent a RGB LED or exposed as PWM channels.
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If compiled as a module, the module will be named leds-qcom-lpg.
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config LEDS_MT6370_RGB
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tristate "LED Support for MediaTek MT6370 PMIC"
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depends on MFD_MT6370
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select LINEAR_RANGES
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help
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Say Y here to enable support for MT6370_RGB LED device.
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In MT6370, there are four channel current-sink LED drivers that
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support hardware pattern for constant current, PWM, and breath mode.
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Isink4 channel can also be used as a CHG_VIN power good indicator.
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This driver can also be built as a module. If so, the module
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will be called "leds-mt6370-rgb".
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endif # LEDS_CLASS_MULTICOLOR
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