Add support for Luckfox PicoKVM

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>

internal/usbgadget/changeset_arm_test.go

@@ -15,7 +15,7 @@ var (
 		VendorId:     "0x1d6b", //The Linux Foundation
 		ProductId:    "0x0104", //Multifunction Composite Gadget
 		SerialNumber: "",
-		Manufacturer: "JetKVM",
+		Manufacturer: "KVM",
 		Product:      "USB Emulation Device",
 		strictMode:   true,
 	}
@@ -25,7 +25,7 @@ var (
 		Keyboard:      true,
 		MassStorage:   true,
 	}
-	usbGadgetName = "jetkvm"
+	usbGadgetName = "kvm"
 	usbGadget     *UsbGadget
 )
 
@@ -109,7 +109,7 @@ func TestUsbGadgetUDCNotBoundAfterReportDescrChanged(t *testing.T) {
 	udc := udcs[0]
 	assert.NotNil(udc, "UDC should exist")
 
-	udcStr, err := os.ReadFile("/sys/kernel/config/usb_gadget/jetkvm/UDC")
+	udcStr, err := os.ReadFile("/sys/kernel/config/usb_gadget/kvm/UDC")
 	assert.Nil(err, "usb_gadget/UDC should exist")
 	assert.Equal(strings.TrimSpace(udc), strings.TrimSpace(string(udcStr)), "UDC should be the same")
 }

internal/usbgadget/config.go

@@ -34,7 +34,8 @@ var defaultGadgetConfig = map[string]gadgetConfigItem{
 			"bcdDevice": "0100",
 		},
 		configAttrs: gadgetAttributes{
-			"MaxPower": "250", // in unit of 2mA
+			"MaxPower":     "250",  // in unit of 2mA
+			"bmAttributes": "0xa0", // 0x80 = bus-powered, 0xa0 = bus-powered + remote wakeup
 		},
 	},
 	"base_info": {
@@ -43,8 +44,8 @@ var defaultGadgetConfig = map[string]gadgetConfigItem{
 		configPath: []string{"strings", "0x409"},
 		attrs: gadgetAttributes{
 			"serialnumber": "",
-			"manufacturer": "JetKVM",
-			"product":      "JetKVM USB Emulation Device",
+			"manufacturer": "KVM",
+			"product":      "KVM USB Emulation Device",
 		},
 		configAttrs: gadgetAttributes{
 			"configuration": "Config 1: HID",
@@ -59,6 +60,23 @@ var defaultGadgetConfig = map[string]gadgetConfigItem{
 	// mass storage
 	"mass_storage_base": massStorageBaseConfig,
 	"mass_storage_lun0": massStorageLun0Config,
+	// audio
+	"audio": {
+		order:      4000,
+		device:     "uac1.usb0",
+		path:       []string{"functions", "uac1.usb0"},
+		configPath: []string{"uac1.usb0"},
+		attrs: gadgetAttributes{
+			"p_chmask":         "3",
+			"p_srate":          "48000",
+			"p_ssize":          "2",
+			"p_volume_present": "0",
+			"c_chmask":         "3",
+			"c_srate":          "48000",
+			"c_ssize":          "2",
+			"c_volume_present": "0",
+		},
+	},
 }
 
 func (u *UsbGadget) isGadgetConfigItemEnabled(itemKey string) bool {
@@ -73,6 +91,8 @@ func (u *UsbGadget) isGadgetConfigItemEnabled(itemKey string) bool {
 		return u.enabledDevices.MassStorage
 	case "mass_storage_lun0":
 		return u.enabledDevices.MassStorage
+	case "audio":
+		return u.enabledDevices.Audio
 	default:
 		return true
 	}

internal/usbgadget/mass_storage.go

@@ -18,9 +18,8 @@ var massStorageLun0Config = gadgetConfigItem{
 		"ro":        "1",
 		"removable": "1",
 		"file":      "\n",
-		// the additional whitespace is intentional to avoid the "JetKVM V irtual Media" string
-		// https://github.com/jetkvm/rv1106-system/blob/778133a1c153041e73f7de86c9c434a2753ea65d/sysdrv/source/uboot/u-boot/drivers/usb/gadget/f_mass_storage.c#L2556
+		// the additional whitespace is intentional to avoid the "KVM V irtual Media" string
 		// Vendor (8 chars), product (16 chars)
-		"inquiry_string": "JetKVM  Virtual Media",
+		"inquiry_string": "KVM  Virtual Media",
 	},
 }

internal/usbgadget/usbgadget.go

@@ -9,7 +9,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/jetkvm/kvm/internal/logging"
+	"kvm/internal/logging"
+
 	"github.com/rs/zerolog"
 )
 
@@ -19,6 +20,7 @@ type Devices struct {
 	RelativeMouse bool `json:"relative_mouse"`
 	Keyboard      bool `json:"keyboard"`
 	MassStorage   bool `json:"mass_storage"`
+	Audio         bool `json:"audio"`
 }
 
 // Config is a struct that represents the customizations for a USB gadget.