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platform/x86: ideapad-laptop: Add allow_v4_dytc module parameter

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Add an allow_v4_dytc module parameter to allow users to easily test if
DYTC version 4 platform-profiles work on their laptop.

Fixes: 599482c58e ("platform/x86: ideapad-laptop: Add platform support for Ideapad 5 Pro 16ACH6-82L5")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213297
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220623115914.103001-1-hdegoede@redhat.com
This commit is contained in:
Hans de Goede 2022-06-23 13:59:14 +02:00
parent d2f33f0c3a
commit a27a1e35f5
1 changed files with 14 additions and 7 deletions
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21
drivers/platform/x86/ideapad-laptop.c
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@ -152,6 +152,10 @@ static bool no_bt_rfkill;
module_param(no_bt_rfkill, bool, 0444);
MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
static bool allow_v4_dytc;
module_param(allow_v4_dytc, bool, 0444);
MODULE_PARM_DESC(allow_v4_dytc, "Enable DYTC version 4 platform-profile support.");
/*
* ACPI Helpers
*/
@ -901,13 +905,16 @@ static int ideapad_dytc_profile_init(struct ideapad_private *priv)
dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
if (dytc_version < 5) {
if (dytc_version < 4 || !dmi_check_system(ideapad_dytc_v4_allow_table)) {
dev_info(&priv->platform_device->dev,
"DYTC_VERSION is less than 4 or is not allowed: %d\n",
dytc_version);
return -ENODEV;
}
if (dytc_version < 4) {
dev_info(&priv->platform_device->dev, "DYTC_VERSION < 4 is not supported\n");
return -ENODEV;
}
if (dytc_version < 5 &&
!(allow_v4_dytc || dmi_check_system(ideapad_dytc_v4_allow_table))) {
dev_info(&priv->platform_device->dev,
"DYTC_VERSION 4 support may not work. Pass ideapad_laptop.allow_v4_dytc=Y on the kernel commandline to enable\n");
return -ENODEV;
}
priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL);