platform/x86: ideapad-laptop: Add new _CFG bit numbers for future use

Later IdeaPads report various things in last 8 bits of _CFG, at least
5 of them represent supported on-screen-displays. Add those bit numbers
to the enum, and use CFG_OSD_ as prefix of their names. Also expose
the values of these bits to debugfs, since they can be useful.

Signed-off-by: Eray Orçunus <erayorcunus@gmail.com>
Acked-by: Ike Panhc <ike.pan@canonical.com>
Link: https://lore.kernel.org/r/20221029120311.11152-5-erayorcunus@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/ideapad-laptop.c

@@ -46,10 +46,22 @@ static const char *const ideapad_wmi_fnesc_events[] = {
 #endif
 
 enum {
-	CFG_CAP_BT_BIT   = 16,
-	CFG_CAP_3G_BIT   = 17,
-	CFG_CAP_WIFI_BIT = 18,
-	CFG_CAP_CAM_BIT  = 19,
+	CFG_CAP_BT_BIT       = 16,
+	CFG_CAP_3G_BIT       = 17,
+	CFG_CAP_WIFI_BIT     = 18,
+	CFG_CAP_CAM_BIT      = 19,
+
+	/*
+	 * These are OnScreenDisplay support bits that can be useful to determine
+	 * whether a hotkey exists/should show OSD. But they aren't particularly
+	 * meaningful since they were introduced later, i.e. 2010 IdeaPads
+	 * don't have these, but they still have had OSD for hotkeys.
+	 */
+	CFG_OSD_NUMLK_BIT    = 27,
+	CFG_OSD_CAPSLK_BIT   = 28,
+	CFG_OSD_MICMUTE_BIT  = 29,
+	CFG_OSD_TOUCHPAD_BIT = 30,
+	CFG_OSD_CAM_BIT      = 31,
 };
 
 enum {
@@ -387,6 +399,19 @@ static int debugfs_cfg_show(struct seq_file *s, void *data)
 		seq_puts(s, " camera");
 	seq_puts(s, "\n");
 
+	seq_puts(s, "OSD support:");
+	if (test_bit(CFG_OSD_NUMLK_BIT, &priv->cfg))
+		seq_puts(s, " num-lock");
+	if (test_bit(CFG_OSD_CAPSLK_BIT, &priv->cfg))
+		seq_puts(s, " caps-lock");
+	if (test_bit(CFG_OSD_MICMUTE_BIT, &priv->cfg))
+		seq_puts(s, " mic-mute");
+	if (test_bit(CFG_OSD_TOUCHPAD_BIT, &priv->cfg))
+		seq_puts(s, " touchpad");
+	if (test_bit(CFG_OSD_CAM_BIT, &priv->cfg))
+		seq_puts(s, " camera");
+	seq_puts(s, "\n");
+
 	seq_puts(s, "Graphics: ");
 	switch (priv->cfg & 0x700) {
 	case 0x100: