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Subject: Re: [PATCH 4/6] platform/x86/uniwill: Make uniwill_dmi_table
 accessible in probe
To: Werner Sembach <wse@tuxedocomputers.com>, hansg@kernel.org,
 ilpo.jarvinen@linux.intel.com
Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20251117132530.32460-1-wse@tuxedocomputers.com>
 <20251117132530.32460-5-wse@tuxedocomputers.com>
 <627e6759-3062-42b1-aaa0-3fe4dbcdf680@gmx.de>
 <dc086fb7-073d-4368-a122-ec4d7cb0da3f@tuxedocomputers.com>
Content-Language: en-US
From: Armin Wolf <W_Armin@gmx.de>
In-Reply-To: <dc086fb7-073d-4368-a122-ec4d7cb0da3f@tuxedocomputers.com>
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Am 18.11.25 um 14:01 schrieb Werner Sembach:

>
> Am 18.11.25 um 12:16 schrieb Armin Wolf:
>> Am 17.11.25 um 14:24 schrieb Werner Sembach:
>>
>>> Move uniwill_dmi_table up and remove __intconst to make it also=20
>>> accessible
>>> in the probe function.
>>
>> NAK, i expect the DMI table to become very large in the future, so=20
>> not marking it
>> as __initconst will waste a sizeable amount of memory.
>>
>> Luckily i am also currently working on extending the DMI table to=20
>> contain additional
>> configuration data like power limits and callbacks for=20
>> device-specific initialization.
>>
>> I can share the patch with you if you want. It would allow us to=20
>> discard the DMI table
>> after module initialization while still allowing for device-specific=20
>> initialization
>> callbacks.
> this callback needs a way to probe for presence of a Nvidia card e.g.=20
> by reading the ec

The patch i am talking about allows DMI table entries to provide a "device=
 descriptor" that
basically is a struct consisting of vendor-specific data and a callback th=
at is executed by
the platform driver when probing the EC. This would allow you to read the =
special register.
Said device descriptor will replace the supported_features variable.

I will send you the patch tomorrow.

Thanks,
Armin Wolf

>> Thanks,
>> Armin Wolf
>>
>>> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
>>> ---
>>> =C2=A0 drivers/platform/x86/uniwill/uniwill-acpi.c | 344=20
>>> ++++++++++----------
>>> =C2=A0 1 file changed, 172 insertions(+), 172 deletions(-)
>>>
>>> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c=20
>>> b/drivers/platform/x86/uniwill/uniwill-acpi.c
>>> index de3417d9d1ac0..9412783698685 100644
>>> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
>>> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
>>> @@ -1405,178 +1405,7 @@ static int uniwill_ec_init(struct=20
>>> uniwill_data *data)
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return devm_add_action_or_reset(data->d=
ev,=20
>>> uniwill_disable_manual_control, data);
>>> =C2=A0 }
>>> =C2=A0 -static int uniwill_probe(struct platform_device *pdev)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 struct uniwill_data *data;
>>> -=C2=A0=C2=A0=C2=A0 struct regmap *regmap;
>>> -=C2=A0=C2=A0=C2=A0 acpi_handle handle;
>>> -=C2=A0=C2=A0=C2=A0 int ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 handle =3D ACPI_HANDLE(&pdev->dev);
>>> -=C2=A0=C2=A0=C2=A0 if (!handle)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return -ENODEV;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 data =3D devm_kzalloc(&pdev->dev, sizeof(*data), G=
FP_KERNEL);
>>> -=C2=A0=C2=A0=C2=A0 if (!data)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return -ENOMEM;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 data->dev =3D &pdev->dev;
>>> -=C2=A0=C2=A0=C2=A0 data->handle =3D handle;
>>> -=C2=A0=C2=A0=C2=A0 platform_set_drvdata(pdev, data);
>>> -
>>> -=C2=A0=C2=A0=C2=A0 regmap =3D devm_regmap_init(&pdev->dev, &uniwill_e=
c_bus, data,=20
>>> &uniwill_ec_config);
>>> -=C2=A0=C2=A0=C2=A0 if (IS_ERR(regmap))
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return PTR_ERR(regmap);
>>> -
>>> -=C2=A0=C2=A0=C2=A0 data->regmap =3D regmap;
>>> -=C2=A0=C2=A0=C2=A0 ret =3D devm_mutex_init(&pdev->dev, &data->super_k=
ey_lock);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_ec_init(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_battery_init(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_led_init(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_hwmon_init(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_nvidia_ctgp_init(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 return uniwill_input_init(data);
>>> -}
>>> -
>>> -static void uniwill_shutdown(struct platform_device *pdev)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 struct uniwill_data *data =3D platform_get_drvdata=
(pdev);
>>> -
>>> -=C2=A0=C2=A0=C2=A0 regmap_clear_bits(data->regmap, EC_ADDR_AP_OEM,=20
>>> ENABLE_MANUAL_CTRL);
>>> -}
>>> -
>>> -static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_SUPER_K=
EY_TOGGLE))
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 /*
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 * The EC_ADDR_SWITCH_STATUS is marked as vol=
atile, so we have=20
>>> to restore it
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 * ourselves.
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 */
>>> -=C2=A0=C2=A0=C2=A0 return regmap_read(data->regmap, EC_ADDR_SWITCH_ST=
ATUS,=20
>>> &data->last_switch_status);
>>> -}
>>> -
>>> -static int uniwill_suspend_battery(struct uniwill_data *data)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_BATTERY=
))
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 /*
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 * Save the current charge limit in order to =
restore it during=20
>>> resume.
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 * We cannot use the regmap code for that sin=
ce this register=20
>>> needs to
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 * be declared as volatile due to CHARGE_CTRL=
_REACHED.
>>> -=C2=A0=C2=A0=C2=A0=C2=A0 */
>>> -=C2=A0=C2=A0=C2=A0 return regmap_read(data->regmap, EC_ADDR_CHARGE_CT=
RL,=20
>>> &data->last_charge_ctrl);
>>> -}
>>> -
>>> -static int uniwill_suspend(struct device *dev)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 struct uniwill_data *data =3D dev_get_drvdata(dev)=
;
>>> -=C2=A0=C2=A0=C2=A0 int ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_suspend_keyboard(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_suspend_battery(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 regcache_cache_only(data->regmap, true);
>>> -=C2=A0=C2=A0=C2=A0 regcache_mark_dirty(data->regmap);
>>> -
>>> -=C2=A0=C2=A0=C2=A0 return 0;
>>> -}
>>> -
>>> -static int uniwill_resume_keyboard(struct uniwill_data *data)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 unsigned int value;
>>> -=C2=A0=C2=A0=C2=A0 int ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_SUPER_K=
EY_TOGGLE))
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D regmap_read(data->regmap, EC_ADDR_SWITCH_S=
TATUS, &value);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 if ((data->last_switch_status & SUPER_KEY_LOCK_STA=
TUS) =3D=3D=20
>>> (value & SUPER_KEY_LOCK_STATUS))
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 return regmap_write_bits(data->regmap, EC_ADDR_TRI=
GGER,=20
>>> TRIGGER_SUPER_KEY_LOCK,
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 TRIGGER_SUPER_KEY_LOCK);
>>> -}
>>> -
>>> -static int uniwill_resume_battery(struct uniwill_data *data)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_BATTERY=
))
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 return regmap_update_bits(data->regmap, EC_ADDR_CH=
ARGE_CTRL,=20
>>> CHARGE_CTRL_MASK,
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 data->last_charge_ctrl);
>>> -}
>>> -
>>> -static int uniwill_resume(struct device *dev)
>>> -{
>>> -=C2=A0=C2=A0=C2=A0 struct uniwill_data *data =3D dev_get_drvdata(dev)=
;
>>> -=C2=A0=C2=A0=C2=A0 int ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 regcache_cache_only(data->regmap, false);
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D regcache_sync(data->regmap);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 ret =3D uniwill_resume_keyboard(data);
>>> -=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> -
>>> -=C2=A0=C2=A0=C2=A0 return uniwill_resume_battery(data);
>>> -}
>>> -
>>> -static DEFINE_SIMPLE_DEV_PM_OPS(uniwill_pm_ops, uniwill_suspend,=20
>>> uniwill_resume);
>>> -
>>> -/*
>>> - * We only use the DMI table for auoloading because the ACPI device=
=20
>>> itself
>>> - * does not guarantee that the underlying EC implementation is=20
>>> supported.
>>> - */
>>> -static const struct acpi_device_id uniwill_id_table[] =3D {
>>> -=C2=A0=C2=A0=C2=A0 { "INOU0000" },
>>> -=C2=A0=C2=A0=C2=A0 { },
>>> -};
>>> -
>>> -static struct platform_driver uniwill_driver =3D {
>>> -=C2=A0=C2=A0=C2=A0 .driver =3D {
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .name =3D DRIVER_NAME,
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .dev_groups =3D uniwill_gr=
oups,
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .probe_type =3D PROBE_PREF=
ER_ASYNCHRONOUS,
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .acpi_match_table =3D uniw=
ill_id_table,
>>> -=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .pm =3D pm_sleep_ptr(&uniw=
ill_pm_ops),
>>> -=C2=A0=C2=A0=C2=A0 },
>>> -=C2=A0=C2=A0=C2=A0 .probe =3D uniwill_probe,
>>> -=C2=A0=C2=A0=C2=A0 .shutdown =3D uniwill_shutdown,
>>> -};
>>> -
>>> -static const struct dmi_system_id uniwill_dmi_table[] __initconst =3D=
 {
>>> +static const struct dmi_system_id uniwill_dmi_table[] =3D {
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 {
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .ident =3D "XMG=
 FUSION 15",
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .matches =3D {
>>> @@ -1936,6 +1765,177 @@ static const struct dmi_system_id=20
>>> uniwill_dmi_table[] __initconst =3D {
>>> =C2=A0 };
>>> =C2=A0 MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
>>> =C2=A0 +static int uniwill_probe(struct platform_device *pdev)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 struct uniwill_data *data;
>>> +=C2=A0=C2=A0=C2=A0 struct regmap *regmap;
>>> +=C2=A0=C2=A0=C2=A0 acpi_handle handle;
>>> +=C2=A0=C2=A0=C2=A0 int ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 handle =3D ACPI_HANDLE(&pdev->dev);
>>> +=C2=A0=C2=A0=C2=A0 if (!handle)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return -ENODEV;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 data =3D devm_kzalloc(&pdev->dev, sizeof(*data), G=
FP_KERNEL);
>>> +=C2=A0=C2=A0=C2=A0 if (!data)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return -ENOMEM;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 data->dev =3D &pdev->dev;
>>> +=C2=A0=C2=A0=C2=A0 data->handle =3D handle;
>>> +=C2=A0=C2=A0=C2=A0 platform_set_drvdata(pdev, data);
>>> +
>>> +=C2=A0=C2=A0=C2=A0 regmap =3D devm_regmap_init(&pdev->dev, &uniwill_e=
c_bus, data,=20
>>> &uniwill_ec_config);
>>> +=C2=A0=C2=A0=C2=A0 if (IS_ERR(regmap))
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return PTR_ERR(regmap);
>>> +
>>> +=C2=A0=C2=A0=C2=A0 data->regmap =3D regmap;
>>> +=C2=A0=C2=A0=C2=A0 ret =3D devm_mutex_init(&pdev->dev, &data->super_k=
ey_lock);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_ec_init(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_battery_init(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_led_init(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_hwmon_init(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_nvidia_ctgp_init(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 return uniwill_input_init(data);
>>> +}
>>> +
>>> +static void uniwill_shutdown(struct platform_device *pdev)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 struct uniwill_data *data =3D platform_get_drvdata=
(pdev);
>>> +
>>> +=C2=A0=C2=A0=C2=A0 regmap_clear_bits(data->regmap, EC_ADDR_AP_OEM,=20
>>> ENABLE_MANUAL_CTRL);
>>> +}
>>> +
>>> +static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_SUPER_K=
EY_TOGGLE))
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 /*
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 * The EC_ADDR_SWITCH_STATUS is marked as vol=
atile, so we have=20
>>> to restore it
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 * ourselves.
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 */
>>> +=C2=A0=C2=A0=C2=A0 return regmap_read(data->regmap, EC_ADDR_SWITCH_ST=
ATUS,=20
>>> &data->last_switch_status);
>>> +}
>>> +
>>> +static int uniwill_suspend_battery(struct uniwill_data *data)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_BATTERY=
))
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 /*
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 * Save the current charge limit in order to =
restore it during=20
>>> resume.
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 * We cannot use the regmap code for that sin=
ce this register=20
>>> needs to
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 * be declared as volatile due to CHARGE_CTRL=
_REACHED.
>>> +=C2=A0=C2=A0=C2=A0=C2=A0 */
>>> +=C2=A0=C2=A0=C2=A0 return regmap_read(data->regmap, EC_ADDR_CHARGE_CT=
RL,=20
>>> &data->last_charge_ctrl);
>>> +}
>>> +
>>> +static int uniwill_suspend(struct device *dev)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 struct uniwill_data *data =3D dev_get_drvdata(dev)=
;
>>> +=C2=A0=C2=A0=C2=A0 int ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_suspend_keyboard(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_suspend_battery(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 regcache_cache_only(data->regmap, true);
>>> +=C2=A0=C2=A0=C2=A0 regcache_mark_dirty(data->regmap);
>>> +
>>> +=C2=A0=C2=A0=C2=A0 return 0;
>>> +}
>>> +
>>> +static int uniwill_resume_keyboard(struct uniwill_data *data)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 unsigned int value;
>>> +=C2=A0=C2=A0=C2=A0 int ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_SUPER_K=
EY_TOGGLE))
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D regmap_read(data->regmap, EC_ADDR_SWITCH_S=
TATUS, &value);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 if ((data->last_switch_status & SUPER_KEY_LOCK_STA=
TUS) =3D=3D=20
>>> (value & SUPER_KEY_LOCK_STATUS))
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 return regmap_write_bits(data->regmap, EC_ADDR_TRI=
GGER,=20
>>> TRIGGER_SUPER_KEY_LOCK,
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 TRIGGER_SUPER_KEY_LOCK);
>>> +}
>>> +
>>> +static int uniwill_resume_battery(struct uniwill_data *data)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 if (!(supported_features & UNIWILL_FEATURE_BATTERY=
))
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 return regmap_update_bits(data->regmap, EC_ADDR_CH=
ARGE_CTRL,=20
>>> CHARGE_CTRL_MASK,
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 data->last_charge_ctrl);
>>> +}
>>> +
>>> +static int uniwill_resume(struct device *dev)
>>> +{
>>> +=C2=A0=C2=A0=C2=A0 struct uniwill_data *data =3D dev_get_drvdata(dev)=
;
>>> +=C2=A0=C2=A0=C2=A0 int ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 regcache_cache_only(data->regmap, false);
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D regcache_sync(data->regmap);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 ret =3D uniwill_resume_keyboard(data);
>>> +=C2=A0=C2=A0=C2=A0 if (ret < 0)
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return ret;
>>> +
>>> +=C2=A0=C2=A0=C2=A0 return uniwill_resume_battery(data);
>>> +}
>>> +
>>> +static DEFINE_SIMPLE_DEV_PM_OPS(uniwill_pm_ops, uniwill_suspend,=20
>>> uniwill_resume);
>>> +
>>> +/*
>>> + * We only use the DMI table for auoloading because the ACPI device=
=20
>>> itself
>>> + * does not guarantee that the underlying EC implementation is=20
>>> supported.
>>> + */
>>> +static const struct acpi_device_id uniwill_id_table[] =3D {
>>> +=C2=A0=C2=A0=C2=A0 { "INOU0000" },
>>> +=C2=A0=C2=A0=C2=A0 { },
>>> +};
>>> +
>>> +static struct platform_driver uniwill_driver =3D {
>>> +=C2=A0=C2=A0=C2=A0 .driver =3D {
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .name =3D DRIVER_NAME,
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .dev_groups =3D uniwill_gr=
oups,
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .probe_type =3D PROBE_PREF=
ER_ASYNCHRONOUS,
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .acpi_match_table =3D uniw=
ill_id_table,
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .pm =3D pm_sleep_ptr(&uniw=
ill_pm_ops),
>>> +=C2=A0=C2=A0=C2=A0 },
>>> +=C2=A0=C2=A0=C2=A0 .probe =3D uniwill_probe,
>>> +=C2=A0=C2=A0=C2=A0 .shutdown =3D uniwill_shutdown,
>>> +};
>>> +
>>> =C2=A0 static int __init uniwill_init(void)
>>> =C2=A0 {
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 const struct dmi_system_id *id;
>