Files
system76-embedded-controller/src/board/system76/common/kbled/white_dac.c
Tim Crawford e032c5f0f2 Update .clang-format and apply
Update .clang-format for LLVM 14.0, available on Ubuntu 22.04.

There is still plenty that clang-format sucks at or does wrong, so
either add some more blocks to disable it, or just put up with it.

Signed-off-by: Tim Crawford <tcrawford@system76.com>
2023-01-10 12:02:21 -07:00

66 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-3.0-only
#include <board/kbled.h>
#include <common/macro.h>
#include <ec/dac.h>
#if !defined(KBLED_DAC)
#error "KBLED_DAC must be defined"
#endif
#define KBLED_DACDAT xconcat(DACDAT, KBLED_DAC)
// clang-format off
static uint8_t __code levels[] = {
0x00,
0x80,
0x90,
0xA8,
0xC0,
0xFF
};
// clang-format on
void kbled_init(void) {
// Enable DAC used for KBLIGHT_ADJ
DACPDREG &= ~BIT(KBLED_DAC);
kbled_reset();
}
void kbled_reset(void) {
kbled_set(0);
}
uint8_t kbled_get(void) {
uint8_t level;
uint8_t raw = KBLED_DACDAT;
for (level = 0; level < ARRAY_SIZE(levels); level++) {
if (raw <= levels[level]) {
return level;
}
}
return 0;
}
uint8_t kbled_max(void) {
return ARRAY_SIZE(levels) - 1;
}
void kbled_set(uint8_t level) {
uint8_t raw = 0;
if (level < ARRAY_SIZE(levels)) {
raw = levels[level];
}
KBLED_DACDAT = raw;
}
uint32_t kbled_get_color(void) {
/* Always white */
return 0xFFFFFF;
}
void kbled_set_color(uint32_t color) {
/* Fix unused variable */
color = color;
}