linux-kernel - [PATCH 1/6] Revert "platform/x86: ideapad-laptop: check for touchpad support in

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Date:   Wed, 26 Oct 2022 22:01:01 +0300
From:   Eray Orçunus <erayorcunus@...il.com>
To:     platform-driver-x86@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        ike.pan@...onical.com, jikos@...nel.org,
        benjamin.tissoires@...hat.com, dmitry.torokhov@...il.com,
        hdegoede@...hat.com, mgross@...ux.intel.com,
        Eray Orçunus <erayorcunus@...il.com>
Subject: [PATCH 1/6] Revert "platform/x86: ideapad-laptop: check for touchpad support in _CFG"

Last 8 bit of _CFG started being used in later IdeaPads, thus 30th bit
doesn't always show whether device supports touchpad or touchpad switch.
Remove checking bit 30 of _CFG, so older IdeaPads like S10-3 can switch
touchpad again via touchpad attribute.

This reverts commit b3ed1b7fe3786c8fe795c16ca07cf3bda67b652f.

Signed-off-by: Eray Orçunus <erayorcunus@...il.com>
---
 drivers/platform/x86/ideapad-laptop.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index e7a1299e3776..b67bac457a7a 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -46,11 +46,10 @@ 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_TOUCHPAD_BIT = 30,
+	CFG_CAP_BT_BIT   = 16,
+	CFG_CAP_3G_BIT   = 17,
+	CFG_CAP_WIFI_BIT = 18,
+	CFG_CAP_CAM_BIT  = 19,
 };
 
 enum {
@@ -367,8 +366,6 @@ static int debugfs_cfg_show(struct seq_file *s, void *data)
 		seq_puts(s, " wifi");
 	if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg))
 		seq_puts(s, " camera");
-	if (test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg))
-		seq_puts(s, " touchpad");
 	seq_puts(s, "\n");
 
 	seq_puts(s, "Graphics: ");
@@ -661,8 +658,7 @@ static umode_t ideapad_is_visible(struct kobject *kobj,
 	else if (attr == &dev_attr_fn_lock.attr)
 		supported = priv->features.fn_lock;
 	else if (attr == &dev_attr_touchpad.attr)
-		supported = priv->features.touchpad_ctrl_via_ec &&
-			    test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg);
+		supported = priv->features.touchpad_ctrl_via_ec;
 	else if (attr == &dev_attr_usb_charging.attr)
 		supported = priv->features.usb_charging;
 
-- 
2.34.1