[PATCH 15/24] platform/x86: ideapad-laptop: check for touchpad support in _CFG

[PATCH 15/24] platform/x86: ideapad-laptop: check for touchpad support in _CFG

[Barnabás Pőcze]

Bit 31 of _CFG is set if the device has a touchpad, check that in
is_visible() for the touchpad attribute. Show 'touchpad', if supported,
in the list of capabilities in the 'cfg' debugfs file.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 8a654ac0546c..1e11d5d9cd20 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -39,10 +39,11 @@ 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,
+	CFG_CAP_TOUCHPAD_BIT = 31,
 };
 
 enum {
@@ -317,6 +318,8 @@ static int debugfs_cfg_show(struct seq_file *s, void *data)
 			seq_printf(s, "Wireless ");
 		if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg))
 			seq_printf(s, "Camera ");
+		if (test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg))
+			seq_printf(s, "Touchpad ");
 		seq_printf(s, "\nGraphic: ");
 		switch ((priv->cfg)&0x700) {
 		case 0x100:
@@ -556,6 +559,8 @@ static umode_t ideapad_is_visible(struct kobject *kobj,
 		supported = test_bit(CFG_CAP_CAM_BIT, &priv->cfg);
 	else if (attr == &dev_attr_fan_mode.attr)
 		supported = priv->features.fan_mode;
+	else if (attr == &dev_attr_touchpad.attr)
+		supported = test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg);
 	else if (attr == &dev_attr_conservation_mode.attr)
 		supported = priv->features.conservation_mode;
 	else if (attr == &dev_attr_fn_lock.attr)
-- 
2.29.2