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Brightness (FreeBSD): improves DDC/CI handling

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This commit is contained in:
Carter Li
2026-05-19 23:37:25 +08:00
committed by 李通洲
parent 0b22427091
commit d5b215e074
1 changed files with 19 additions and 11 deletions
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src/detection/brightness/brightness_bsd.c
+19 -11
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@@ -3,6 +3,7 @@
#include "common/io.h"
#include "common/kmod.h"
#include "common/debug.h"
#include "common/time.h"
#include <sys/ioctl.h>
#include <sys/fcntl.h>
@@ -32,28 +33,35 @@ const char* detectWithDdcci(FF_A_UNUSED FFBrightnessOptions* options, FFlist* re
uint8_t i2cIn[] = { 0x51, 0x82, 0x01, 0x10 /* luminance */, 0 };
i2cIn[4] = 0x6E ^ i2cIn[0] ^ i2cIn[1] ^ i2cIn[2] ^ i2cIn[3];
uint8_t i2cOut[12] = {};
struct iic_msg msgs[] = {
{
int ret = ioctl(fd, I2CRDWR, &(struct iic_rdwr_data) {
.msgs = &(struct iic_msg) {
.slave = 0x6E,
.flags = IIC_M_WR,
.len = ARRAY_SIZE(i2cIn),
.buf = i2cIn
},
{
.nmsgs = 1
});
if (ret < 0) {
FF_DEBUG("First ioctl(/dev/iic%c, I2CRDWR) failed: %s", i, strerror(errno));
continue;
}
ffTimeSleep(options->ddcciSleep);
uint8_t i2cOut[12] = {};
ret = ioctl(fd, I2CRDWR, &(struct iic_rdwr_data) {
.msgs = &(struct iic_msg) {
.slave = 0x6F,
.flags = IIC_M_RD,
.len = ARRAY_SIZE(i2cOut),
.buf = i2cOut
}
};
int ret = ioctl(fd, I2CRDWR, &(struct iic_rdwr_data) {
.msgs = msgs,
.nmsgs = ARRAY_SIZE(msgs)
},
.nmsgs = 1
});
if (ret < 0) {
FF_DEBUG("ioctl(/dev/iic%c, I2CRDWR) failed: %s", i, strerror(errno));
FF_DEBUG("Second ioctl(/dev/iic%c, I2CRDWR) failed: %s", i, strerror(errno));
continue;
}
if (i2cOut[2] != 0x02 || i2cOut[3] != 0x00) {