Evolution-x-devices/device_xiaomi_rosemary
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rosemary: usb: fix usb preferences by spoofing roles

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Our device has broken roles: they appear to be permanently set to
NONE and don't respond to configfs writes. This causes Android to
not see the USB port as connected, breaking the USB settings.

To repair USB preferences, we spoof roles in the following fashion:
  - data role: DEVICE (if NONE)
  - port mode: UFP (if NONE)
This commit is contained in:
Ash Blake
2021-04-19 01:40:45 +02:00
committed by Matsvei Niaverau
parent ecfab0dcb6
commit 68edd8118c
1 changed files with 14 additions and 1 deletions
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15
usb/Usb.cpp
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@@ -249,7 +249,6 @@ Status getCurrentRoleHelper(const std::string &portName, bool connected,
std::string filename;
std::string roleName;
// Accessory stuff removed - stock HAL doesn't have that
// Mode
if (type == PortRoleType::POWER_ROLE) {
@@ -367,6 +366,15 @@ Status getPortStatusHelper(hidl_vec<PortStatus_1_1> *currentPortStatus_1_1,
if (getCurrentRoleHelper(port.first, port.second, PortRoleType::DATA_ROLE,
&currentRole) == Status::SUCCESS) {
/* HACK: Our device has broken roles: they appear to be permanently set
to NONE and don't respond to configfs writes. This causes Android to
not see the USB port as connected, breaking the USB settings.
To get USB preferences to work, we have to spoof some roles. */
if (port.second == true && currentRole == static_cast<uint32_t>(PortDataRole::NONE)) {
currentRole = static_cast<uint32_t>(PortDataRole::DEVICE);
}
(*currentPortStatus_1_1)[i].status.currentDataRole =
static_cast<PortDataRole>(currentRole);
} else {
@@ -376,6 +384,11 @@ Status getPortStatusHelper(hidl_vec<PortStatus_1_1> *currentPortStatus_1_1,
if (getCurrentRoleHelper(port.first, port.second, PortRoleType::MODE,
&currentRole) == Status::SUCCESS) {
// HACK: see above
if (port.second == true && currentRole == static_cast<uint32_t>(PortMode_1_1::NONE)) {
currentRole = static_cast<uint32_t>(PortMode_1_1::UFP);
}
(*currentPortStatus_1_1)[i].currentMode =
static_cast<PortMode_1_1>(currentRole);
(*currentPortStatus_1_1)[i].status.currentMode =