OpenCloudOS-Kernel/drivers/leds/rgb/Makefile

# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_LEDS_GROUP_MULTICOLOR)	+= leds-group-multicolor.o
obj-$(CONFIG_LEDS_PWM_MULTICOLOR)	+= leds-pwm-multicolor.o
obj-$(CONFIG_LEDS_QCOM_LPG)		+= leds-qcom-lpg.o
obj-$(CONFIG_LEDS_MT6370_RGB)		+= leds-mt6370-rgb.o
leds: Add driver for Qualcomm LPG The Light Pulse Generator (LPG) is a PWM-block found in a wide range of PMICs from Qualcomm. These PMICs typically comes with 1-8 LPG instances, with their output being routed to various other components, such as current sinks or GPIOs. Each LPG instance can operate on fixed parameters or based on a shared lookup-table, altering the duty cycle over time. This provides the means for hardware assisted transitions of LED brightness. A typical use case for the fixed parameter mode is to drive a PWM backlight control signal, the driver therefor allows each LPG instance to be exposed to the kernel either through the LED framework or the PWM framework. A typical use case for the LED configuration is to drive RGB LEDs in smartphones etc, for which the driver supports multiple channels to be ganged up to a MULTICOLOR LED. In this configuration the pattern generators will be synchronized, to allow for multi-color patterns. The idea of modelling this as a LED driver ontop of a PWM driver was considered, but setting the properties related to patterns does not fit in the PWM API. Similarly the idea of just duplicating the lower bits in a PWM and LED driver separately was considered, but this would not allow the PWM channels and LEDs to be configured on a per-board basis. The driver implements the more complex LED interface, and provides a PWM interface on the side of that, in the same driver. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by: Douglas Anderson <dianders@chromium.org> Tested-by: Luca Weiss <luca@z3ntu.xyz> Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> Tested-by: Marijn Suijten <marijn.suijten@somainline.org> [On the Sony Xperia Nile Discovery, SDM630] Signed-off-by: Pavel Machek <pavel@ucw.cz> 2022-03-04 05:43:00 +08:00			`# SPDX-License-Identifier: GPL-2.0`

leds: rgb: Add a multicolor LED driver to group monochromatic LEDs 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> 2023-07-28 23:37:31 +08:00			`obj-$(CONFIG_LEDS_GROUP_MULTICOLOR) += leds-group-multicolor.o`
leds: Move pwm-multicolor driver into rgb directory The drivers/leds/rgb subdirectory is relatively fresh, so we move this new PWM multi-color driver into it. Signed-off-by: Sven Schwermer <sven.schwermer@disruptive-technologies.com> Signed-off-by: Pavel Machek <pavel@ucw.cz> 2022-05-05 02:49:46 +08:00			`obj-$(CONFIG_LEDS_PWM_MULTICOLOR) += leds-pwm-multicolor.o`
			`obj-$(CONFIG_LEDS_QCOM_LPG) += leds-qcom-lpg.o`
leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support The MediaTek MT6370 is a highly-integrated smart power management IC, which includes a single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C & Power Delivery (PD) controller, dual Flash LED current sources, a RGB LED driver, a backlight WLED driver, a display bias driver and a general LDO for portable devices. Add support for the MediaTek MT6370 Current Sink Type LED Indicator driver. It can control four channels current-sink RGB LEDs with 3 modes: constant current, PWM, and breath mode. Co-developed-by: Alice Chen <alice_chen@richtek.com> Signed-off-by: Alice Chen <alice_chen@richtek.com> Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com> Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/1df93a583c3f508a7158b83b95857e9bce235e1b.1678430444.git.chiaen_wu@richtek.com 2023-03-10 14:55:55 +08:00			`obj-$(CONFIG_LEDS_MT6370_RGB) += leds-mt6370-rgb.o`