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Code Packages Releases Activity

brightness: more aggressive ddc rescans on device changes

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This commit is contained in:
bbedward
2025-12-05 13:18:10 -05:00
parent ddda87c5a7
commit 2c48458384
4 changed files with 87 additions and 9 deletions
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12
core/internal/server/brightness/ddc.go
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@@ -40,6 +40,10 @@ func (b *DDCBackend) scanI2CDevices() error {
return b.scanI2CDevicesInternal(false)
}
func (b *DDCBackend) ForceRescan() error {
return b.scanI2CDevicesInternal(true)
}
func (b *DDCBackend) scanI2CDevicesInternal(force bool) error {
b.scanMutex.Lock()
defer b.scanMutex.Unlock()
@@ -261,8 +265,16 @@ func (b *DDCBackend) setBrightnessImmediateWithExponent(id string, value int) er
busPath := fmt.Sprintf("/dev/i2c-%d", dev.bus)
if _, err := os.Stat(busPath); os.IsNotExist(err) {
b.devices.Delete(id)
log.Debugf("removed stale DDC device %s (bus no longer exists)", id)
return fmt.Errorf("device disconnected: %s", id)
}
fd, err := syscall.Open(busPath, syscall.O_RDWR, 0)
if err != nil {
b.devices.Delete(id)
log.Debugf("removed DDC device %s (open failed: %v)", id, err)
return fmt.Errorf("open i2c device: %w", err)
}
defer syscall.Close(fd)