This is a general driver for LM3509 backlight chip of TI.
LM3509 is High Efficiency Boost for White LEDs and/or OLED Displays with
Dual Current Sinks. This driver supports OLED/White LED select, brightness
control and sub/main control.
The datasheet can be found at http://www.ti.com/product/lm3509.
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Changes in v5:
Renamed lm3509_bl_led_pdata to lm3509_bl_led_data
Set backlight_properties.scale to BACKLIGHT_SCALE_NON_LINEAR
Add dev_err_probe() for first write to a register
Use dev_err_probe() instead of dev_err()
v4: https://lore.kernel.org/all/[email protected]/
Changes in v4:
Use backlight_*() to access backlight_device
Do not set backlight_properties.power
v3: https://lore.kernel.org/all/[email protected]/
Changes in v3:
Improved device tree bindings documentation
v2: https://lore.kernel.org/all/[email protected]/
Changes in v2:
Add device tree nodes for each output
Addressed multiple smaller review comments
v1: https://lore.kernel.org/all/[email protected]/
Patrick Gansterer (2):
dt-bindings: backlight: Add Texas Instruments LM3509
backlight: Add new lm3509 backlight driver
.../bindings/leds/backlight/ti,lm3509.yaml | 139 +++++++
drivers/video/backlight/Kconfig | 7 +
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/lm3509_bl.c | 340 ++++++++++++++++++
4 files changed, 487 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lm3509.yaml
create mode 100644 drivers/video/backlight/lm3509_bl.c
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2.44.0