Add support for fan button on Ideapad Z580

The patch adds support for fan control button on Ideapad Z580. This is
the same button as on Z570, but it raises different bit in
VPCCMD_R_SPECIAL_BUTTONS. Also add message to dmesg when unknown button
press detected, it will help adding support for new special buttons.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Tested-by: Ivan Vojtko <nekroman.sk@gmail.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 17f00b8dc5cbcb841540f07c7330775bcb5393df..89c4519d48ac80d2a54f42ceabf7a48b792e871c 100644 (file)
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -640,7 +640,8 @@ static void ideapad_check_special_buttons(struct ideapad_private *priv)
        for (bit = 0; bit < 16; bit++) {
                if (test_bit(bit, &value)) {
                        switch (bit) {
-                       case 6:
+                       case 0: /* Z580 */
+                       case 6: /* Z570 */
                                /* Thermal Management button */
                                ideapad_input_report(priv, 65);
                                break;
@@ -648,6 +649,9 @@ static void ideapad_check_special_buttons(struct ideapad_private *priv)
                                /* OneKey Theater button */
                                ideapad_input_report(priv, 64);
                                break;
+                       default:
+                               pr_info("Unknown special button: %lu\n", bit);
+                               break;
                        }
                }
        }