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| author | Kelly Anderson <kelly@xilka.com> | 2021-09-25 22:39:00 -0600 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-09-28 16:59:36 +0200 |
| commit | 599482c58ebd007f24f8eba99fbda5d957e773e5 (patch) | |
| tree | 690f36dfdd6c9cd9a75d00cc3692883549ad2666 /drivers/platform | |
| parent | 6a684635478c03db92727c9fa217c660f6c3abc3 (diff) | |
| download | linux-stable-599482c58ebd007f24f8eba99fbda5d957e773e5.tar.gz linux-stable-599482c58ebd007f24f8eba99fbda5d957e773e5.tar.bz2 linux-stable-599482c58ebd007f24f8eba99fbda5d957e773e5.zip | |
platform/x86: ideapad-laptop: Add platform support for Ideapad 5 Pro 16ACH6-82L5
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>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/ideapad-laptop.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index e7a1299e3776..2771a05ea5e2 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -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) |