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platform/x86: ideapad-laptop: check for touchpad support in _CFG

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Bit 30 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>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210203215403.290792-21-pobrn@protonmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Barnabás Pőcze 2021-02-03 21:56:22 +00:00 committed by Hans de Goede
parent 392cbf0a42
commit b3ed1b7fe3
1 changed files with 9 additions and 5 deletions
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6
drivers/platform/x86/ideapad-laptop.c
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@ -45,6 +45,7 @@ enum {
CFG_CAP_3G_BIT = 17,
CFG_CAP_WIFI_BIT = 18,
CFG_CAP_CAM_BIT = 19,
CFG_CAP_TOUCHPAD_BIT = 30,
};
enum {
@ -337,6 +338,8 @@ 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:
@ -579,7 +582,8 @@ 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;
supported = priv->features.touchpad_ctrl_via_ec &&
test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg);
return supported ? attr->mode : 0;
}