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| author | Jack Chen <zenghuchen@google.com> | 2024-07-04 22:15:00 +0300 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2024-08-01 15:40:00 +0300 |
| commit | b5a7fc286c0f1a1f6e50b030a9450cf39ba100b1 (patch) | |
| tree | 29f5df68a50696086e226100f4c2f5837718cc42 /drivers/clk/meson/a1-peripherals.h | |
| parent | 8400291e289ee6b2bf9779ff1c83a291501f017b (diff) | |
| download | linux-b5a7fc286c0f1a1f6e50b030a9450cf39ba100b1.tar.xz | |
leds: lm3601x: Calculate max_brightness and brightness properly
The torch_current_max should be checked not exceeding the upper bound.
If it does, throw a warning message and set to LM3601X_MAX_TORCH_I_UA.
LM3601x torch brigthness register (LM3601X_LED_TORCH_REG) takes 0 as the
minimum output (2.4 mA). However, 0 of led_brightness means LED_OFF.
Adding a -1 offset to brightness before writing to brightness
register, so when users write minimum brightness (1), it sets lm3601x
output the minimum.
Signed-off-by: Jack Chen <zenghuchen@google.com>
Link: https://lore.kernel.org/r/20240704191500.766846-1-zenghuchen@google.com
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/clk/meson/a1-peripherals.h')
0 files changed, 0 insertions, 0 deletions