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platform/x86: ideapad-laptop: Add platform support for Ideapad 5 Pro 16ACH6-82L5

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Adding support specifically for Ideapad 5 Pro 16ACH6-82L5 by adding a
allow list that can validate notebooks for which dytc_version
is less than 5, and seem to work fine at dytc_version 4. This code has
been tested to work properly on the specified system.

Signed-off-by: Kelly Anderson <kelly@xilka.com>
Link: https://lore.kernel.org/r/11840239.O9o76ZdvQC@comer.internal
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Kelly Anderson 2021-09-25 22:39:00 -06:00 committed by Hans de Goede
parent 6a68463547
commit 599482c58e
1 changed files with 24 additions and 3 deletions
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27
drivers/platform/x86/ideapad-laptop.c
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@ -868,6 +868,18 @@ static void dytc_profile_refresh(struct ideapad_private *priv)
}
}
static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
{
/* Ideapad 5 Pro 16ACH6 */
.ident = "LENOVO 82L5",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "82L5")
}
},
{}
};
static int ideapad_dytc_profile_init(struct ideapad_private *priv)
{
int err, dytc_version;
@ -882,12 +894,21 @@ static int ideapad_dytc_profile_init(struct ideapad_private *priv)
return err;
/* Check DYTC is enabled and supports mode setting */
if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output))
if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output)) {
dev_info(&priv->platform_device->dev, "DYTC_QUERY_ENABLE_BIT returned false\n");
return -ENODEV;
}
dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
if (dytc_version < 5)
return -ENODEV;
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;
}
}
priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL);
if (!priv->dytc)