Evolution-X-Tensor/device_google_zumapro
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

usb: report displayport capable port partner disconnect to drm

Browse source 
On port-partner remove, write to drm's usbc_cable_disconnect
node if setupDisplayPortPoll() had run previously in the
connection, flagged by mPartnerSupportsDisplayPort.

Test: manual test on device
Bug: 303820069
Change-Id: I3478f2f027540972647044716a1a3e832ae1b152
Signed-off-by: RD Babiera <rdbabiera@google.com>
(cherry picked from commit 3082aa7f4877e737f06f2fb170778dac56fb7d0a)
This commit is contained in:
RD Babiera 2023-10-26 21:35:30 +00:00
parent 17b40f0246
commit 39c864b17b
3 changed files with 20 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

13
usb/usb/Usb.cpp
View file

@ -1217,6 +1217,16 @@ static void uevent_event(uint32_t /*epevents*/, struct data *payload) {
payload->usb->mPartnerUp = true;
pthread_cond_signal(&payload->usb->mPartnerCV);
pthread_mutex_unlock(&payload->usb->mPartnerLock);
} else if (std::regex_match(cp, std::regex("(remove)(.*)(-partner)"))) {
string drmDisconnectPath = string(kDisplayPortDrmPath) + "usbc_cable_disconnect";
if (payload->usb->mPartnerSupportsDisplayPort) {
ALOGI("displayport partner removed");
if (!WriteStringToFile("1", drmDisconnectPath)) {
ALOGE("Failed to signal disconnect to drm");
}
payload->usb->mPartnerSupportsDisplayPort = false;
}
} else if (!strncmp(cp, "DEVTYPE=typec_", strlen("DEVTYPE=typec_")) ||
!strncmp(cp, "DRIVER=max77759tcpc",
strlen("DRIVER=max77759tcpc")) ||
@ -1383,6 +1393,8 @@ ScopedAStatus Usb::setCallback(const shared_ptr<IUsbCallback>& in_callback) {
return ScopedAStatus::ok();
}
/***** DisplayPort Alt Mode Helpers *****/
Status Usb::getDisplayPortUsbPathHelper(string *path) {
DIR *dp;
Status result = Status::ERROR;
@ -1799,6 +1811,7 @@ void Usb::setupDisplayPortPoll() {
int ret;
ALOGI("usbdp: setup: beginning setup for displayport poll thread");
mPartnerSupportsDisplayPort = true;
/*
* If thread is currently starting, then it hasn't setup DisplayPort fd's, and we can abandon

5
usb/usb/Usb.h
View file

@ -156,6 +156,11 @@ struct Usb : public BnUsb {
* eventfd to monitor whether a connection results in DisplayPort Alt Mode activating.
*/
int mDisplayPortActivateTimer;
/*
* Indicates whether or not port partner supports DisplayPort, and is used to
* communicate to the drm when the port partner physically disconnects.
*/
bool mPartnerSupportsDisplayPort;
private:
pthread_t mPoll;

2
usb/usb/android.hardware.usb-service.rc
View file

@ -74,6 +74,7 @@ on post-fs
chown root system /sys/devices/platform/110f0000.drmdp/drm-displayport/orientation
chown root system /sys/devices/platform/110f0000.drmdp/drm-displayport/pin_assignment
chown root system /sys/devices/platform/110f0000.drmdp/drm-displayport/link_status
chown root system /sys/devices/platform/110f0000.drmdp/drm-displayport/usbc_cable_disconnect
chown root system /sys/devices/platform/11110000.usb/dwc3_exynos_otg_b_sess
chown root system /sys/devices/platform/11110000.usb/dwc3_exynos_otg_id
chown root system /sys/devices/platform/11110000.usb/usb_data_enabled
@ -150,4 +151,5 @@ on post-fs
chmod 664 /sys/devices/platform/110f0000.drmdp/drm-displayport/orientation
chmod 664 /sys/devices/platform/110f0000.drmdp/drm-displayport/pin_assignment
chmod 664 /sys/devices/platform/110f0000.drmdp/drm-displayport/link_status
chmod 664 /sys/devices/platform/110f0000.drmdp/drm-displayport/usbc_cable_disconnect
chmod 664 /sys/devices/platform/google,pogo/enable_usb