Gamepad (Linux): support battery level detection of NS Pro controller

2026-09-13 02:42:09 +02:00 · 2024-01-07 17:59:50 +08:00
parent cf096eb101
commit 2aa899d83c
1 changed files with 17 additions and 1 deletions
@@ -32,10 +32,26 @@ static void detectGamepad(FFlist* devices, FFstrbuf* name, FFstrbuf* path)
            ffStrbufAppendS(path, "/capacity"); // /sys/class/input/jsX/device/device/power_supply/XXX/capacity
            char capacity[32];
            ssize_t nRead = ffReadFileData(path->chars, sizeof(capacity) - 1, capacity);
-            if (nRead > 0)
+            if (nRead > 0) // Tested with a PS4 controller
            {
                capacity[nRead] = '\0';
                device->battery = (uint8_t) strtoul(capacity, NULL, 10);
+                break;
+            }
+
+            ffStrbufAppendS(path, "_level");
+            nRead = ffReadFileData(path->chars, sizeof(capacity) - 1, capacity);
+            if (nRead > 0) // Tested with a NS Pro controller
+            {
+                // https://github.com/torvalds/linux/blob/52b1853b080a082ec3749c3a9577f6c71b1d4a90/drivers/power/supply/power_supply_sysfs.c#L124
+                switch (capacity[0])
+                {
+                    case 'C': device->battery = 1; break; // Critical
+                    case 'L': device->battery = 25; break; // Low
+                    case 'N': device->battery = 50; break; // Normal
+                    case 'H': device->battery = 75; break; // High
+                    case 'F': device->battery = 100; break; // Full
+                }
            }
        }
    }