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Port dp changes to drm sysfs

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Write pin assignment, hpd, and orientation from type-c class to
drmdp platform device attributes using epoll when displayport
driver binds to device, and determine whether or not to shut down
epoll on displayport driver change uevents.

Test: manual testing with form factor device
Bug: 260915739
Change-Id: Iec9fc76166481a4611bb2fc023aea044b497f2c0
This commit is contained in:
RD Babiera 2023-02-02 22:49:51 +00:00
parent cee3db080c
commit de0fc9d220
5 changed files with 372 additions and 4 deletions
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22
usb/usb/Usb.h
View file

@ -20,6 +20,7 @@
#include <aidl/android/hardware/usb/BnUsb.h>
#include <aidl/android/hardware/usb/BnUsbCallback.h>
#include <pixelusb/UsbOverheatEvent.h>
#include <sys/eventfd.h>
#include <utils/Log.h>
#define UEVENT_MSG_LEN 2048
@ -38,6 +39,7 @@ using ::aidl::android::hardware::usb::IUsbCallback;
using ::aidl::android::hardware::usb::PortRole;
using ::android::base::ReadFileToString;
using ::android::base::WriteStringToFile;
using ::android::base::unique_fd;
using ::android::hardware::google::pixel::usb::UsbOverheatEvent;
using ::android::hardware::google::pixel::usb::ZoneInfo;
using ::android::hardware::thermal::V2_0::TemperatureType;
@ -46,6 +48,7 @@ using ::android::sp;
using ::ndk::ScopedAStatus;
using ::std::shared_ptr;
using ::std::string;
using ::std::thread;
constexpr char kGadgetName[] = "11210000.dwc3";
#define NEW_UDC_PATH "/sys/devices/platform/11210000.usb/"
@ -54,6 +57,9 @@ constexpr char kGadgetName[] = "11210000.dwc3";
#define VBUS_PATH NEW_UDC_PATH "dwc3_exynos_otg_b_sess"
#define USB_DATA_PATH NEW_UDC_PATH "usb_data_enabled"
#define DISPLAYPORT_SHUTDOWN_CLEAR 0
#define DISPLAYPORT_SHUTDOWN_SET 1
struct Usb : public BnUsb {
Usb();
@ -71,6 +77,14 @@ struct Usb : public BnUsb {
int64_t in_transactionId) override;
ScopedAStatus resetUsbPort(const string& in_portName, int64_t in_transactionId) override;
Status getDisplayPortUsbPathHelper(string *path);
Status writeDisplayPortAttributeOverride(string attribute, string value);
Status writeDisplayPortAttribute(string attribute, string usb_path);
bool determineDisplayPortRetry(string linkPath, string hpdPath);
void setupDisplayPortPoll();
void shutdownDisplayPortPollHelper();
void shutdownDisplayPortPoll();
std::shared_ptr<::aidl::android::hardware::usb::IUsbCallback> mCallback;
// Protects mCallback variable
pthread_mutex_t mLock;
@ -89,8 +103,16 @@ struct Usb : public BnUsb {
float mPluggedTemperatureCelsius;
// Usb Data status
bool mUsbDataEnabled;
// Protects writeDisplayPortToExynos(), setupDisplayPortPoll(), and
// shutdownDisplayPortPoll()
pthread_mutex_t mDisplayPortLock;
// eventfd to signal DisplayPort thread
int mDisplayPortShutdown;
private:
pthread_t mPoll;
pthread_t mDisplayPortPoll;
pthread_t mDisplayPortShutdownHelper;
};
} // namespace usb