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kvm
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chore: various comment & string updates

This commit is contained in:
Cameron Fleming 2025-01-05 02:24:53 +00:00
parent 7e7310b176
commit 1fe71da77d
1 changed files with 6 additions and 6 deletions
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12
display.go
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@ -97,13 +97,15 @@ func updateStaticContents() {
// setDisplayBrightness sets /sys/class/backlight/backlight/brightness to alter // setDisplayBrightness sets /sys/class/backlight/backlight/brightness to alter
// the backlight brightness of the JetKVM hardware's display. // the backlight brightness of the JetKVM hardware's display.
func setDisplayBrightness(brightness int) error { func setDisplayBrightness(brightness int) error {
// NOTE: The actual maximum value for this is 255, but out-of-the-box, the value is set to 64.
// The maximum set here is set to 100 to reduce the risk of drawing too much power (and besides, 255 is very bright!).
if brightness > 100 || brightness < 0 { if brightness > 100 || brightness < 0 {
return errors.New("brightness value out of bounds, must be between 0 and 100") return errors.New("brightness value out of bounds, must be between 0 and 100")
} }
// Check the display backlight class is available // Check the display backlight class is available
if _, err := os.Stat(BACKLIGHT_CONTROL_CLASS); errors.Is(err, os.ErrNotExist) { if _, err := os.Stat(BACKLIGHT_CONTROL_CLASS); errors.Is(err, os.ErrNotExist) {
return errors.New("brightness value cannot be set, possibly not running on JetKVM hardware.") return errors.New("brightness value cannot be set, possibly not running on JetKVM hardware")
} }
// Set the value // Set the value
@ -123,8 +125,6 @@ func displayTimeoutTick() {
tn := time.Now() tn := time.Now()
td := tn.Sub(lastWakeTime).Milliseconds() td := tn.Sub(lastWakeTime).Milliseconds()
// fmt.Printf("display: tick: time since wake: %vms, dim after: %v, off after: %v\n", td, config.DisplayDimAfterMs, config.DisplayOffAfterMs)
if td > config.DisplayOffAfterMs && config.DisplayOffAfterMs != 0 && (backlightState == 1 || backlightState == 0) { if td > config.DisplayOffAfterMs && config.DisplayOffAfterMs != 0 && (backlightState == 1 || backlightState == 0) {
// Display fully off // Display fully off
@ -174,7 +174,6 @@ func wakeDisplay() {
// TODO: This is quite a hack, really we should be getting an event from jetkvm_native, or the whole display backlight // TODO: This is quite a hack, really we should be getting an event from jetkvm_native, or the whole display backlight
// control should be hoisted up to jetkvm_native. // control should be hoisted up to jetkvm_native.
func watchTsEvents() { func watchTsEvents() {
// Open touchscreen device
ts, err := os.OpenFile(TOUCHSCREEN_DEVICE, os.O_RDONLY, 0666) ts, err := os.OpenFile(TOUCHSCREEN_DEVICE, os.O_RDONLY, 0666)
if err != nil { if err != nil {
fmt.Printf("display: failed to open touchscreen device: %s\n", err) fmt.Printf("display: failed to open touchscreen device: %s\n", err)
@ -183,7 +182,9 @@ func watchTsEvents() {
defer ts.Close() defer ts.Close()
// Watch for events // This buffer is set to 24 bytes as that's the normal size of events on /dev/input
// Reference: https://www.kernel.org/doc/Documentation/input/input.txt
// This could potentially be set higher, to require multiple events to wake the display.
buf := make([]byte, 24) buf := make([]byte, 24)
for { for {
_, err := ts.Read(buf) _, err := ts.Read(buf)
@ -192,7 +193,6 @@ func watchTsEvents() {
return return
} }
// Touchscreen event, wake the display
wakeDisplay() wakeDisplay()
} }
} }