sravan/system76-embedded-controller
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Add support for LED brightness setting

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This commit is contained in:
Jeremy Soller
2020-01-28 15:02:12 -07:00
parent 5cd6f77e2a
commit edbb6136dc
1 changed files with 51 additions and 1 deletions
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52
src/board/system76/galp3-c/acpi.c
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@ -1,11 +1,34 @@
#include <board/acpi.h>
#include <board/battery.h>
#include <board/dac.h>
#include <board/gpio.h>
#include <board/peci.h>
#include <common/debug.h>
#include <board/gpio.h>
extern bool lid_wake;
uint8_t fcmd = 0;
uint8_t fdat = 0;
uint8_t fbuf[4] = { 0, 0, 0, 0 };
void fcommand(void) {
switch (fcmd) {
// Keyboard backlight
case 0xCA:
switch (fdat) {
// Set white LED brightness
case 0x00:
DACDAT5 = fbuf[0];
break;
// Get white LED brightness
case 0x01:
fbuf[0] = DACDAT5;
break;
}
break;
}
}
uint8_t acpi_read(uint8_t addr) {
uint8_t data = 0;
@ -66,6 +89,13 @@ uint8_t acpi_read(uint8_t addr) {
// Set size of flash (from old firmware)
ACPI_8 (0xE5, 0x80);
ACPI_8 (0xF8, fcmd);
ACPI_8 (0xF9, fdat);
ACPI_8 (0xFA, fbuf[0]);
ACPI_8 (0xFB, fbuf[1]);
ACPI_8 (0xFC, fbuf[2]);
ACPI_8 (0xFD, fbuf[3]);
}
DEBUG("acpi_read %02X = %02X\n", addr, data);
@ -86,5 +116,25 @@ void acpi_write(uint8_t addr, uint8_t data) {
case 0xD9:
gpio_set(&LED_AIRPLANE_N, !(bool)(data & (1 << 6)));
break;
case 0xF8:
fcmd = data;
fcommand();
break;
case 0xF9:
fdat = data;
break;
case 0xFA:
fbuf[0] = data;
break;
case 0xFB:
fbuf[1] = data;
break;
case 0xFC:
fbuf[2] = data;
break;
case 0xFD:
fbuf[3] = data;
break;
}
}