+static void mouse_init(uint8_t orig_addr)
+{
+ uint16_t reg3;
+ uint8_t mouse_handler;
+ uint8_t addr;
+
+again:
+ // Move to tmp address 15 to setup mouse function
+ mouse_handler = (reg3 = adb_host_talk(orig_addr, ADB_REG_3)) & 0xFF;
+ if (!reg3) return;
+ dmprintf("addr%d reg3: %04X\n", orig_addr, reg3);
+
+ // Move device to tmp address
+ adb_host_flush(orig_addr);
+ adb_host_listen(orig_addr, ADB_REG_3, ((reg3 >> 8) & 0xF0) | ADB_ADDR_TMP, 0xFE);
+ adb_host_flush(ADB_ADDR_TMP);
+
+ mouse_handler = (reg3 = adb_host_talk(ADB_ADDR_TMP, ADB_REG_3)) & 0xFF;
+ if (!reg3) {
+ dmprintf("move fail\n");
+ goto again;
+ }
+ addr = ADB_ADDR_TMP;
+
+
+detect_again:
+ // Try to escalate into extended/classic2 protocol
+ if (mouse_handler == ADB_HANDLER_CLASSIC1_MOUSE || mouse_handler == ADB_HANDLER_CLASSIC2_MOUSE) {
+ adb_host_flush(addr);
+ adb_host_listen(addr, ADB_REG_3, (reg3 >> 8), ADB_HANDLER_EXTENDED_MOUSE);
+
+ mouse_handler = (reg3 = adb_host_talk(addr, ADB_REG_3)) & 0xFF;
+
+
+ if (mouse_handler == ADB_HANDLER_CLASSIC1_MOUSE) {
+ adb_host_flush(addr);
+ adb_host_listen(addr, ADB_REG_3, (reg3 >> 8), ADB_HANDLER_CLASSIC2_MOUSE);
+
+ mouse_handler = (reg3 = adb_host_talk(addr, ADB_REG_3)) & 0xFF;
+ }
+ dmprintf("addr%d reg3: %04X\n", addr, reg3);
+
+ }
+
+ // Classic Protocol 100cpi
+ if (mouse_handler == ADB_HANDLER_CLASSIC1_MOUSE) {
+ xprintf("Classic 100cpi\n");
+ mouse_cpi = 100;
+ }
+
+ // Classic Protocol 200cpi
+ if (mouse_handler == ADB_HANDLER_CLASSIC2_MOUSE) {
+ xprintf("Classic 200cpi\n");
+ mouse_cpi = 200;
+ }
+
+ // Extended Mouse Protocol
+ if (mouse_handler == ADB_HANDLER_EXTENDED_MOUSE) {
+ // Device info format(reg1 8-byte data)
+ // 0-3: device id
+ // 4-5: resolution in units/inch (0xC8=200upi)
+ // 6 : device class (0: Tablet, 1: Mouse, 2: Trackball)
+ // 7 : num of buttons
+ uint8_t len;
+ uint8_t buf[8];
+ len = adb_host_talk_buf(addr, ADB_REG_1, buf, sizeof(buf));
+
+ if (len > 5) {
+ mouse_cpi = (buf[4]<<8) | buf[5];
+ } else {
+ mouse_cpi = 100;
+ }
+
+ if (len) {
+ xprintf("Ext: [", len);
+ for (int8_t i = 0; i < len; i++) xprintf("%02X ", buf[i]);
+ xprintf("] cpi=%d\n", mouse_cpi);
+ }
+
+
+ // Kensington Turbo Mouse 5: default device
+ if (buf[0] == 0x4B && buf[1] == 0x4D && buf[2] == 0x4C && buf[3] == 0x31) {
+ xprintf("TM5: default\n");
+ // Move it to addr0 to remove this device and get new device with handle id 50 on addr 3
+ // and the new device on address 3 should be handled with command sequence later.
+ //
+ // Turbo Mouse 5 has one default device on addr3 as normal mouse at first, and another device
+ // with hander id 50 appears after the default device is moved from addr3.
+ // The mouse has the two devices at same time transiently in the result. The default device is
+ // removed automatically after the another device receives command sequence.
+ // NOTE: The mouse hangs if you try moving the two deivces to same address.
+ adb_host_flush(addr);
+ adb_host_listen(addr, ADB_REG_3, ((reg3 >> 8) & 0xF0) | ADB_ADDR_0, 0xFE);
+ } else {
+ xprintf("Unknown\n");
+ }
+ }
+
+ // Kensington Turbo Mouse 5: setup
+ if (mouse_handler == ADB_HANDLER_TURBO_MOUSE) {
+ xprintf("TM5: ext\n");
+
+ // Kensington Turbo Mouse 5 command sequence to enable four buttons
+ // https://elixir.bootlin.com/linux/v4.4/source/drivers/macintosh/adbhid.c#L1176
+ // https://github.com/NetBSD/src/blob/64b8a48e1288eb3902ed73113d157af50b2ec596/sys/arch/macppc/dev/ams.c#L261
+ static uint8_t cmd1[] = { 0xE7, 0x8C, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x94 };
+ static uint8_t cmd2[] = { 0xA5, 0x14, 0x00, 0x00, 0x69, 0xFF, 0xFF, 0x27 };
+
+ adb_host_flush(addr);
+ adb_host_listen_buf(addr, ADB_REG_2, cmd1, sizeof(cmd1));
+ adb_host_flush(addr);
+ adb_host_listen_buf(addr, ADB_REG_2, cmd2, sizeof(cmd2));
+ }
+
+
+ // Move to address 10 for mouse polling
+ adb_host_flush(addr);
+ adb_host_listen(addr, ADB_REG_3, ((reg3 >> 8) & 0xF0) | ADB_ADDR_MOUSE_POLL, 0xFE);
+ adb_host_flush(ADB_ADDR_MOUSE_POLL);
+
+ mouse_handler = (reg3 = adb_host_talk(addr, ADB_REG_3)) & 0xFF;
+ if (reg3) {
+ dmprintf("detect again\n");
+ goto detect_again;
+ }
+
+ goto again;
+}