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usb_usb: power saving during suspend without remote wakeup

Browse source 
https://github.com/tmk/tmk_keyboard/issues/769#issuecomment-1864054914
This commit is contained in:
tmk 2023-12-20 15:52:06 +09:00
parent ea27f71701
commit 09664638f8
2 changed files with 26 additions and 0 deletions
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3
converter/usb_usb/config.h
View file

@ -53,4 +53,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#define LOCKING_SUPPORT_ENABLE #define LOCKING_SUPPORT_ENABLE
#define LOCKING_RESYNC_ENABLE #define LOCKING_RESYNC_ENABLE
// power saving during suspended without remote wakeup disabled
#define UHS2_POWER_SAVING
#endif #endif

23
converter/usb_usb/usb_usb.cpp
View file

@ -242,15 +242,38 @@ void hook_usb_suspend_loop(void)
static uint8_t _led_stats = 0; static uint8_t _led_stats = 0;
void hook_usb_suspend_entry(void) void hook_usb_suspend_entry(void)
{ {
dprintf("[S]");
matrix_clear(); matrix_clear();
clear_keyboard(); clear_keyboard();
usb_host.suspend(); usb_host.suspend();
#ifdef UHS2_POWER_SAVING
// power down when remote wake is not enabled
if (!USB_Device_RemoteWakeupEnabled) {
dprintf("[p]");
usb_host.powerDown();
}
#endif
} }
void hook_usb_wakeup(void) void hook_usb_wakeup(void)
{ {
dprintf("[W]");
suspend_wakeup_init(); suspend_wakeup_init();
#ifdef UHS2_POWER_SAVING
// power down when remote wake is not enabled
if (!USB_Device_RemoteWakeupEnabled) {
dprintf("[P]");
usb_host.powerUp();
// USB state cannot be retained through power down/up cycle
// device should be enumerated and initialize from the beginning
usb_host.ReleaseAllDevices();
usb_host.setUsbTaskState(USB_STATE_DETACHED);
}
#endif
usb_host.resume(); usb_host.resume();
} }