[PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system

Werner Sembach posted 2 patches 2 months ago
[PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Werner Sembach 2 months ago
From: Armin Wolf <W_Armin@gmx.de>

Future additions to the driver will depend on device-specific
initialization steps. Extend the DMI-based feature detection system
to include device descriptors. Each descriptor contains a bitmap of
supported features and a set of callback for performing
device-specific initialization.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
---
 drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
 1 file changed, 142 insertions(+), 26 deletions(-)

diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
index bd7e63dd51810..01192c32608e5 100644
--- a/drivers/platform/x86/uniwill/uniwill-acpi.c
+++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
@@ -322,6 +322,7 @@ struct uniwill_data {
 	struct device *dev;
 	acpi_handle handle;
 	struct regmap *regmap;
+	unsigned int features;
 	struct acpi_battery_hook hook;
 	unsigned int last_charge_ctrl;
 	struct mutex battery_lock;	/* Protects the list of currently registered batteries */
@@ -341,12 +342,21 @@ struct uniwill_battery_entry {
 	struct power_supply *battery;
 };
 
+struct uniwill_device_descriptor {
+	unsigned int features;
+	/* Executed during driver probing */
+	int (*probe)(struct uniwill_data *data);
+};
+
 static bool force;
 module_param_unsafe(force, bool, 0);
 MODULE_PARM_DESC(force, "Force loading without checking for supported devices\n");
 
-/* Feature bitmask since the associated registers are not reliable */
-static unsigned int supported_features;
+/*
+ * Contains device specific data like the feature bitmap since
+ * the associated registers are not always reliable.
+ */
+static struct uniwill_device_descriptor device_descriptor __ro_after_init;
 
 static const char * const uniwill_temp_labels[] = {
 	"CPU",
@@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
 	{ KE_END }
 };
 
+static inline bool uniwill_device_supports(struct uniwill_data *data,
+					   unsigned int features_mask,
+					   unsigned int features)
+{
+	return (data->features & features_mask) == features;
+}
+
 static int uniwill_ec_reg_write(void *context, unsigned int reg, unsigned int val)
 {
 	union acpi_object params[2] = {
@@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
 
 static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n)
 {
+	struct device *dev = kobj_to_dev(kobj);
+	struct uniwill_data *data = dev_get_drvdata(dev);
+
 	if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
-		if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
+		if (uniwill_device_supports(data, UNIWILL_FEATURE_FN_LOCK_TOGGLE,
+					    UNIWILL_FEATURE_FN_LOCK_TOGGLE))
 			return attr->mode;
 	}
 
 	if (attr == &dev_attr_super_key_toggle_enable.attr) {
-		if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
+		if (uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
+					    UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
 			return attr->mode;
 	}
 
 	if (attr == &dev_attr_touchpad_toggle_enable.attr) {
-		if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
+		if (uniwill_device_supports(data, UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
+					    UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
 			return attr->mode;
 	}
 
 	if (attr == &dev_attr_rainbow_animation.attr ||
 	    attr == &dev_attr_breathing_in_suspend.attr) {
-		if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
+		if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
+					    UNIWILL_FEATURE_LIGHTBAR))
 			return attr->mode;
 	}
 
@@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct uniwill_data *data)
 {
 	struct device *hdev;
 
-	if (!(supported_features & UNIWILL_FEATURE_HWMON))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
+				     UNIWILL_FEATURE_HWMON))
 		return 0;
 
 	hdev = devm_hwmon_device_register_with_info(data->dev, "uniwill", data,
@@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data *data)
 	unsigned int value;
 	int ret;
 
-	if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
+				     UNIWILL_FEATURE_LIGHTBAR))
 		return 0;
 
 	ret = devm_mutex_init(data->dev, &data->led_lock);
@@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct uniwill_data *data)
 {
 	int ret;
 
-	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
+				     UNIWILL_FEATURE_BATTERY))
 		return 0;
 
 	ret = devm_mutex_init(data->dev, &data->battery_lock);
@@ -1361,6 +1388,19 @@ static int uniwill_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
+	data->features = device_descriptor.features;
+
+	/*
+	 * Some devices might need to perform some device-specific initialization steps
+	 * before the supported features are initialized. Because of this we have to call
+	 * this callback just after the EC itself was initialized.
+	 */
+	if (device_descriptor.probe) {
+		ret = device_descriptor.probe(data);
+		if (ret < 0)
+			return ret;
+	}
+
 	ret = uniwill_battery_init(data);
 	if (ret < 0)
 		return ret;
@@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct platform_device *pdev)
 
 static int uniwill_suspend_keyboard(struct uniwill_data *data)
 {
-	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
+				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
 		return 0;
 
 	/*
@@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct uniwill_data *data)
 
 static int uniwill_suspend_battery(struct uniwill_data *data)
 {
-	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
+				     UNIWILL_FEATURE_BATTERY))
 		return 0;
 
 	/*
@@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
 	unsigned int value;
 	int ret;
 
-	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
+				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
 		return 0;
 
 	ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
@@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
 
 static int uniwill_resume_battery(struct uniwill_data *data)
 {
-	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
+				     UNIWILL_FEATURE_BATTERY))
 		return 0;
 
 	return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
@@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
 	.shutdown = uniwill_shutdown,
 };
 
+static struct uniwill_device_descriptor lapac71h_descriptor __initdata = {
+	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
+		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
+		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
+		    UNIWILL_FEATURE_BATTERY |
+		    UNIWILL_FEATURE_HWMON
+};
+
+static struct uniwill_device_descriptor lapkc71f_descriptor __initdata = {
+	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
+		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
+		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
+		    UNIWILL_FEATURE_LIGHTBAR |
+		    UNIWILL_FEATURE_BATTERY |
+		    UNIWILL_FEATURE_HWMON
+};
+
+static struct uniwill_device_descriptor empty_descriptor __initdata = {};
+
 static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 	{
 		.ident = "XMG FUSION 15",
@@ -1503,6 +1566,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "XMG FUSION 15",
@@ -1510,6 +1574,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71B"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "Intel NUC x15",
@@ -1517,11 +1582,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPAC71H"),
 		},
-		.driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
-					UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
-					UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
-					UNIWILL_FEATURE_BATTERY |
-					UNIWILL_FEATURE_HWMON),
+		.driver_data = &lapac71h_descriptor,
 	},
 	{
 		.ident = "Intel NUC x15",
@@ -1529,12 +1590,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPKC71F"),
 		},
-		.driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
-					UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
-					UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
-					UNIWILL_FEATURE_LIGHTBAR |
-					UNIWILL_FEATURE_BATTERY |
-					UNIWILL_FEATURE_HWMON),
+		.driver_data = &lapkc71f_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
@@ -1542,6 +1598,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTxX1"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
@@ -1549,6 +1606,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTQx1"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14/16 Gen7 Intel",
@@ -1556,6 +1614,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxARX1_PHxAQF1"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 16 Gen7 Intel/Commodore Omnia-Book Pro Gen 7",
@@ -1563,6 +1622,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH6AG01_PH6AQ71_PH6AQI1"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14/16 Gen8 Intel/Commodore Omnia-Book Pro Gen 8",
@@ -1570,6 +1630,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14 Gen8 Intel/Commodore Omnia-Book Pro Gen 8",
@@ -1577,6 +1638,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PG31"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 16 Gen8 Intel",
@@ -1584,6 +1646,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH6PG01_PH6PG71"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14/15 Gen9 AMD",
@@ -1591,6 +1654,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14/15 Gen9 Intel/Commodore Omnia-Book 15 Gen9",
@@ -1598,6 +1662,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxMRXx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
@@ -1605,6 +1670,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxHP4NAx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
@@ -1612,6 +1678,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxKK4NAx_XxSP4NAx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Pro 15 Gen10 Intel",
@@ -1619,6 +1686,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxAR4NAx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Max 15 Gen10 AMD",
@@ -1626,6 +1694,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5KK45xS_X5SP45xS"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
@@ -1633,6 +1702,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6HP45xU"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
@@ -1640,6 +1710,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6KK45xU_X6SP45xU"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Max 15 Gen10 Intel",
@@ -1647,6 +1718,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5AR45xS"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO InfinityBook Max 16 Gen10 Intel",
@@ -1654,6 +1726,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR55xU"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15 Gen1 AMD",
@@ -1661,6 +1734,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A1650TI"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15 Gen1 AMD",
@@ -1668,6 +1742,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A2060"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 17 Gen1 AMD",
@@ -1675,6 +1750,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A1650TI"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 17 Gen1 AMD",
@@ -1682,6 +1758,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A2060"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15 Gen1 Intel",
@@ -1689,6 +1766,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I1650TI"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15 Gen1 Intel",
@@ -1696,6 +1774,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I2060"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 17 Gen1 Intel",
@@ -1703,6 +1782,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I1650TI"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 17 Gen1 Intel",
@@ -1710,6 +1790,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I2060"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Trinity 15 Intel Gen1",
@@ -1717,6 +1798,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1501I"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Trinity 17 Intel Gen1",
@@ -1724,6 +1806,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1701I"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15/17 Gen2 AMD",
@@ -1731,6 +1814,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxMGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15/17 Gen2 Intel",
@@ -1738,6 +1822,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxNGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 AMD",
@@ -1745,6 +1830,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxZGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 Intel",
@@ -1752,6 +1838,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxTGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris/Polaris 15/17 Gen4 AMD",
@@ -1759,6 +1846,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 15 Gen4 Intel",
@@ -1766,6 +1854,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxAGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Polaris 15/17 Gen5 AMD",
@@ -1773,6 +1862,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16 Gen5 AMD",
@@ -1780,6 +1870,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16/17 Gen5 Intel/Commodore ORION Gen 5",
@@ -1787,6 +1878,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxPXxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris Slim 15 Gen6 AMD",
@@ -1794,6 +1886,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris Slim 15 Gen6 Intel/Commodore ORION Slim 15 Gen6",
@@ -1801,6 +1894,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM5IXxA"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 16 Gen6",
@@ -1808,6 +1902,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB1"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 16 Gen6",
@@ -1815,6 +1910,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB2"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 17 Gen6 Intel/Commodore ORION 17 Gen6",
@@ -1822,6 +1918,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM7IXxN"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16 Gen7 AMD",
@@ -1829,6 +1926,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6FR5xxY"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16 Gen7 Intel",
@@ -1836,6 +1934,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Stellaris 16 Gen7 Intel",
@@ -1843,6 +1942,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY_mLED"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Pulse 14 Gen1 AMD",
@@ -1850,6 +1950,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1401"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Pulse 15 Gen1 AMD",
@@ -1857,6 +1958,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1501"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{
 		.ident = "TUXEDO Pulse 15 Gen2 AMD",
@@ -1864,6 +1966,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PF5LUXG"),
 		},
+		.driver_data = &empty_descriptor,
 	},
 	{ }
 };
@@ -1871,6 +1974,7 @@ MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
 
 static int __init uniwill_init(void)
 {
+	const struct uniwill_device_descriptor *descriptor;
 	const struct dmi_system_id *id;
 	int ret;
 
@@ -1880,10 +1984,22 @@ static int __init uniwill_init(void)
 			return -ENODEV;
 
 		/* Assume that the device supports all features */
-		supported_features = UINT_MAX;
+		device_descriptor.features = UINT_MAX;
 		pr_warn("Loading on a potentially unsupported device\n");
 	} else {
-		supported_features = (uintptr_t)id->driver_data;
+		/*
+		 * Some devices might support additional features depending on
+		 * the BIOS version/date, so we call this callback to let them
+		 * modify their device descriptor accordingly.
+		 */
+		if (id->callback) {
+			ret = id->callback(id);
+			if (ret < 0)
+				return ret;
+		}
+
+		descriptor = id->driver_data;
+		device_descriptor = *descriptor;
 	}
 
 	ret = platform_driver_register(&uniwill_driver);
-- 
2.43.0
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Ilpo Järvinen 1 month, 3 weeks ago
On Thu, 4 Dec 2025, Werner Sembach wrote:

> From: Armin Wolf <W_Armin@gmx.de>
> 
> Future additions to the driver will depend on device-specific
> initialization steps. Extend the DMI-based feature detection system
> to include device descriptors. Each descriptor contains a bitmap of
> supported features and a set of callback for performing
> device-specific initialization.
> 
> Signed-off-by: Armin Wolf <W_Armin@gmx.de>
> Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
> ---
>  drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
>  1 file changed, 142 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
> index bd7e63dd51810..01192c32608e5 100644
> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
> @@ -322,6 +322,7 @@ struct uniwill_data {
>  	struct device *dev;
>  	acpi_handle handle;
>  	struct regmap *regmap;
> +	unsigned int features;
>  	struct acpi_battery_hook hook;
>  	unsigned int last_charge_ctrl;
>  	struct mutex battery_lock;	/* Protects the list of currently registered batteries */
> @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
>  	struct power_supply *battery;
>  };
>  
> +struct uniwill_device_descriptor {
> +	unsigned int features;
> +	/* Executed during driver probing */
> +	int (*probe)(struct uniwill_data *data);
> +};
> +
>  static bool force;
>  module_param_unsafe(force, bool, 0);
>  MODULE_PARM_DESC(force, "Force loading without checking for supported devices\n");
>  
> -/* Feature bitmask since the associated registers are not reliable */
> -static unsigned int supported_features;
> +/*
> + * Contains device specific data like the feature bitmap since
> + * the associated registers are not always reliable.
> + */
> +static struct uniwill_device_descriptor device_descriptor __ro_after_init;
>  
>  static const char * const uniwill_temp_labels[] = {
>  	"CPU",
> @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
>  	{ KE_END }
>  };
>  
> +static inline bool uniwill_device_supports(struct uniwill_data *data,
> +					   unsigned int features_mask,
> +					   unsigned int features)
> +{
> +	return (data->features & features_mask) == features;
> +}
> +
>  static int uniwill_ec_reg_write(void *context, unsigned int reg, unsigned int val)
>  {
>  	union acpi_object params[2] = {
> @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
>  
>  static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n)
>  {
> +	struct device *dev = kobj_to_dev(kobj);
> +	struct uniwill_data *data = dev_get_drvdata(dev);
> +
>  	if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
> -		if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_FN_LOCK_TOGGLE,
> +					    UNIWILL_FEATURE_FN_LOCK_TOGGLE))
>  			return attr->mode;
>  	}
>  
>  	if (attr == &dev_attr_super_key_toggle_enable.attr) {
> -		if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> +					    UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>  			return attr->mode;
>  	}
>  
>  	if (attr == &dev_attr_touchpad_toggle_enable.attr) {
> -		if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
> +					    UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
>  			return attr->mode;
>  	}
>  
>  	if (attr == &dev_attr_rainbow_animation.attr ||
>  	    attr == &dev_attr_breathing_in_suspend.attr) {
> -		if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
> +					    UNIWILL_FEATURE_LIGHTBAR))
>  			return attr->mode;
>  	}
>  
> @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct uniwill_data *data)
>  {
>  	struct device *hdev;
>  
> -	if (!(supported_features & UNIWILL_FEATURE_HWMON))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
> +				     UNIWILL_FEATURE_HWMON))
>  		return 0;
>  
>  	hdev = devm_hwmon_device_register_with_info(data->dev, "uniwill", data,
> @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data *data)
>  	unsigned int value;
>  	int ret;
>  
> -	if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
> +				     UNIWILL_FEATURE_LIGHTBAR))
>  		return 0;
>  
>  	ret = devm_mutex_init(data->dev, &data->led_lock);
> @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct uniwill_data *data)
>  {
>  	int ret;
>  
> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> +				     UNIWILL_FEATURE_BATTERY))
>  		return 0;
>  
>  	ret = devm_mutex_init(data->dev, &data->battery_lock);
> @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct platform_device *pdev)
>  	if (ret < 0)
>  		return ret;
>  
> +	data->features = device_descriptor.features;
> +
> +	/*
> +	 * Some devices might need to perform some device-specific initialization steps
> +	 * before the supported features are initialized. Because of this we have to call
> +	 * this callback just after the EC itself was initialized.
> +	 */
> +	if (device_descriptor.probe) {
> +		ret = device_descriptor.probe(data);
> +		if (ret < 0)
> +			return ret;
> +	}
> +
>  	ret = uniwill_battery_init(data);
>  	if (ret < 0)
>  		return ret;
> @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct platform_device *pdev)
>  
>  static int uniwill_suspend_keyboard(struct uniwill_data *data)
>  {
> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>  		return 0;
>  
>  	/*
> @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct uniwill_data *data)
>  
>  static int uniwill_suspend_battery(struct uniwill_data *data)
>  {
> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> +				     UNIWILL_FEATURE_BATTERY))
>  		return 0;
>  
>  	/*
> @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
>  	unsigned int value;
>  	int ret;
>  
> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>  		return 0;
>  
>  	ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
> @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
>  
>  static int uniwill_resume_battery(struct uniwill_data *data)
>  {
> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> +				     UNIWILL_FEATURE_BATTERY))
>  		return 0;
>  
>  	return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
> @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
>  	.shutdown = uniwill_shutdown,
>  };
>  
> +static struct uniwill_device_descriptor lapac71h_descriptor __initdata = {
> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> +		    UNIWILL_FEATURE_BATTERY |
> +		    UNIWILL_FEATURE_HWMON
> +};
> +
> +static struct uniwill_device_descriptor lapkc71f_descriptor __initdata = {
> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> +		    UNIWILL_FEATURE_LIGHTBAR |
> +		    UNIWILL_FEATURE_BATTERY |
> +		    UNIWILL_FEATURE_HWMON
> +};
> +
> +static struct uniwill_device_descriptor empty_descriptor __initdata = {};
> +
>  static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>  	{
>  		.ident = "XMG FUSION 15",
> @@ -1503,6 +1566,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>  			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>  			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
>  		},
> +		.driver_data = &empty_descriptor,

Hi,

Is there some advantage of having an "empty descriptor" over just NULL 
checking its presence in the code?

>  static int __init uniwill_init(void)
>  {
> +	const struct uniwill_device_descriptor *descriptor;
>  	const struct dmi_system_id *id;
>  	int ret;
>  
> @@ -1880,10 +1984,22 @@ static int __init uniwill_init(void)
>  			return -ENODEV;
>  
>  		/* Assume that the device supports all features */
> -		supported_features = UINT_MAX;
> +		device_descriptor.features = UINT_MAX;
>  		pr_warn("Loading on a potentially unsupported device\n");
>  	} else {
> -		supported_features = (uintptr_t)id->driver_data;
> +		/*
> +		 * Some devices might support additional features depending on
> +		 * the BIOS version/date, so we call this callback to let them
> +		 * modify their device descriptor accordingly.
> +		 */
> +		if (id->callback) {
> +			ret = id->callback(id);
> +			if (ret < 0)
> +				return ret;
> +		}
> +
> +		descriptor = id->driver_data;
> +		device_descriptor = *descriptor;
>  	}
>  
>  	ret = platform_driver_register(&uniwill_driver);
> 

-- 
 i.
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Werner Sembach 1 month, 3 weeks ago
Am 16.12.25 um 14:40 schrieb Ilpo Järvinen:
> On Thu, 4 Dec 2025, Werner Sembach wrote:
>
>> From: Armin Wolf <W_Armin@gmx.de>
>>
>> Future additions to the driver will depend on device-specific
>> initialization steps. Extend the DMI-based feature detection system
>> to include device descriptors. Each descriptor contains a bitmap of
>> supported features and a set of callback for performing
>> device-specific initialization.
>>
>> Signed-off-by: Armin Wolf <W_Armin@gmx.de>
>> Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
>> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
>> ---
>>   drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
>>   1 file changed, 142 insertions(+), 26 deletions(-)
>>
>> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
>> index bd7e63dd51810..01192c32608e5 100644
>> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
>> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
>> @@ -322,6 +322,7 @@ struct uniwill_data {
>>   	struct device *dev;
>>   	acpi_handle handle;
>>   	struct regmap *regmap;
>> +	unsigned int features;
>>   	struct acpi_battery_hook hook;
>>   	unsigned int last_charge_ctrl;
>>   	struct mutex battery_lock;	/* Protects the list of currently registered batteries */
>> @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
>>   	struct power_supply *battery;
>>   };
>>   
>> +struct uniwill_device_descriptor {
>> +	unsigned int features;
>> +	/* Executed during driver probing */
>> +	int (*probe)(struct uniwill_data *data);
>> +};
>> +
>>   static bool force;
>>   module_param_unsafe(force, bool, 0);
>>   MODULE_PARM_DESC(force, "Force loading without checking for supported devices\n");
>>   
>> -/* Feature bitmask since the associated registers are not reliable */
>> -static unsigned int supported_features;
>> +/*
>> + * Contains device specific data like the feature bitmap since
>> + * the associated registers are not always reliable.
>> + */
>> +static struct uniwill_device_descriptor device_descriptor __ro_after_init;
>>   
>>   static const char * const uniwill_temp_labels[] = {
>>   	"CPU",
>> @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
>>   	{ KE_END }
>>   };
>>   
>> +static inline bool uniwill_device_supports(struct uniwill_data *data,
>> +					   unsigned int features_mask,
>> +					   unsigned int features)
>> +{
>> +	return (data->features & features_mask) == features;
>> +}
>> +
>>   static int uniwill_ec_reg_write(void *context, unsigned int reg, unsigned int val)
>>   {
>>   	union acpi_object params[2] = {
>> @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
>>   
>>   static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n)
>>   {
>> +	struct device *dev = kobj_to_dev(kobj);
>> +	struct uniwill_data *data = dev_get_drvdata(dev);
>> +
>>   	if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
>> -		if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
>> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_FN_LOCK_TOGGLE,
>> +					    UNIWILL_FEATURE_FN_LOCK_TOGGLE))
>>   			return attr->mode;
>>   	}
>>   
>>   	if (attr == &dev_attr_super_key_toggle_enable.attr) {
>> -		if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
>> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>> +					    UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>   			return attr->mode;
>>   	}
>>   
>>   	if (attr == &dev_attr_touchpad_toggle_enable.attr) {
>> -		if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
>> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
>> +					    UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
>>   			return attr->mode;
>>   	}
>>   
>>   	if (attr == &dev_attr_rainbow_animation.attr ||
>>   	    attr == &dev_attr_breathing_in_suspend.attr) {
>> -		if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
>> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>> +					    UNIWILL_FEATURE_LIGHTBAR))
>>   			return attr->mode;
>>   	}
>>   
>> @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct uniwill_data *data)
>>   {
>>   	struct device *hdev;
>>   
>> -	if (!(supported_features & UNIWILL_FEATURE_HWMON))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
>> +				     UNIWILL_FEATURE_HWMON))
>>   		return 0;
>>   
>>   	hdev = devm_hwmon_device_register_with_info(data->dev, "uniwill", data,
>> @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data *data)
>>   	unsigned int value;
>>   	int ret;
>>   
>> -	if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>> +				     UNIWILL_FEATURE_LIGHTBAR))
>>   		return 0;
>>   
>>   	ret = devm_mutex_init(data->dev, &data->led_lock);
>> @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct uniwill_data *data)
>>   {
>>   	int ret;
>>   
>> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>> +				     UNIWILL_FEATURE_BATTERY))
>>   		return 0;
>>   
>>   	ret = devm_mutex_init(data->dev, &data->battery_lock);
>> @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct platform_device *pdev)
>>   	if (ret < 0)
>>   		return ret;
>>   
>> +	data->features = device_descriptor.features;
>> +
>> +	/*
>> +	 * Some devices might need to perform some device-specific initialization steps
>> +	 * before the supported features are initialized. Because of this we have to call
>> +	 * this callback just after the EC itself was initialized.
>> +	 */
>> +	if (device_descriptor.probe) {
>> +		ret = device_descriptor.probe(data);
>> +		if (ret < 0)
>> +			return ret;
>> +	}
>> +
>>   	ret = uniwill_battery_init(data);
>>   	if (ret < 0)
>>   		return ret;
>> @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct platform_device *pdev)
>>   
>>   static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>   {
>> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>   		return 0;
>>   
>>   	/*
>> @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>   
>>   static int uniwill_suspend_battery(struct uniwill_data *data)
>>   {
>> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>> +				     UNIWILL_FEATURE_BATTERY))
>>   		return 0;
>>   
>>   	/*
>> @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
>>   	unsigned int value;
>>   	int ret;
>>   
>> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>   		return 0;
>>   
>>   	ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
>> @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
>>   
>>   static int uniwill_resume_battery(struct uniwill_data *data)
>>   {
>> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>> +				     UNIWILL_FEATURE_BATTERY))
>>   		return 0;
>>   
>>   	return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
>> @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
>>   	.shutdown = uniwill_shutdown,
>>   };
>>   
>> +static struct uniwill_device_descriptor lapac71h_descriptor __initdata = {
>> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>> +		    UNIWILL_FEATURE_BATTERY |
>> +		    UNIWILL_FEATURE_HWMON
>> +};
>> +
>> +static struct uniwill_device_descriptor lapkc71f_descriptor __initdata = {
>> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>> +		    UNIWILL_FEATURE_LIGHTBAR |
>> +		    UNIWILL_FEATURE_BATTERY |
>> +		    UNIWILL_FEATURE_HWMON
>> +};
>> +
>> +static struct uniwill_device_descriptor empty_descriptor __initdata = {};
>> +
>>   static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>>   	{
>>   		.ident = "XMG FUSION 15",
>> @@ -1503,6 +1566,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>>   			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
>>   		},
>> +		.driver_data = &empty_descriptor,
> Hi,
>
> Is there some advantage of having an "empty descriptor" over just NULL
> checking its presence in the code?

One less "if"

In the long run (with more features implemented and tested) there probably wont 
be any device using the empty descriptor, then it can be removed again.

>
>>   static int __init uniwill_init(void)
>>   {
>> +	const struct uniwill_device_descriptor *descriptor;
>>   	const struct dmi_system_id *id;
>>   	int ret;
>>   
>> @@ -1880,10 +1984,22 @@ static int __init uniwill_init(void)
>>   			return -ENODEV;
>>   
>>   		/* Assume that the device supports all features */
>> -		supported_features = UINT_MAX;
>> +		device_descriptor.features = UINT_MAX;
>>   		pr_warn("Loading on a potentially unsupported device\n");
>>   	} else {
>> -		supported_features = (uintptr_t)id->driver_data;
>> +		/*
>> +		 * Some devices might support additional features depending on
>> +		 * the BIOS version/date, so we call this callback to let them
>> +		 * modify their device descriptor accordingly.
>> +		 */
>> +		if (id->callback) {
>> +			ret = id->callback(id);
>> +			if (ret < 0)
>> +				return ret;
>> +		}
>> +
>> +		descriptor = id->driver_data;
>> +		device_descriptor = *descriptor;
>>   	}
>>   
>>   	ret = platform_driver_register(&uniwill_driver);
>>
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Ilpo Järvinen 1 month, 3 weeks ago
On Tue, 16 Dec 2025, Werner Sembach wrote:

> 
> Am 16.12.25 um 14:40 schrieb Ilpo Järvinen:
> > On Thu, 4 Dec 2025, Werner Sembach wrote:
> > 
> > > From: Armin Wolf <W_Armin@gmx.de>
> > > 
> > > Future additions to the driver will depend on device-specific
> > > initialization steps. Extend the DMI-based feature detection system
> > > to include device descriptors. Each descriptor contains a bitmap of
> > > supported features and a set of callback for performing
> > > device-specific initialization.
> > > 
> > > Signed-off-by: Armin Wolf <W_Armin@gmx.de>
> > > Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
> > > Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
> > > ---
> > >   drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
> > >   1 file changed, 142 insertions(+), 26 deletions(-)
> > > 
> > > diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c
> > > b/drivers/platform/x86/uniwill/uniwill-acpi.c
> > > index bd7e63dd51810..01192c32608e5 100644
> > > --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
> > > +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
> > > @@ -322,6 +322,7 @@ struct uniwill_data {
> > >   	struct device *dev;
> > >   	acpi_handle handle;
> > >   	struct regmap *regmap;
> > > +	unsigned int features;
> > >   	struct acpi_battery_hook hook;
> > >   	unsigned int last_charge_ctrl;
> > >   	struct mutex battery_lock;	/* Protects the list of currently
> > > registered batteries */
> > > @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
> > >   	struct power_supply *battery;
> > >   };
> > >   +struct uniwill_device_descriptor {
> > > +	unsigned int features;
> > > +	/* Executed during driver probing */
> > > +	int (*probe)(struct uniwill_data *data);
> > > +};
> > > +
> > >   static bool force;
> > >   module_param_unsafe(force, bool, 0);
> > >   MODULE_PARM_DESC(force, "Force loading without checking for supported
> > > devices\n");
> > >   -/* Feature bitmask since the associated registers are not reliable */
> > > -static unsigned int supported_features;
> > > +/*
> > > + * Contains device specific data like the feature bitmap since
> > > + * the associated registers are not always reliable.
> > > + */
> > > +static struct uniwill_device_descriptor device_descriptor
> > > __ro_after_init;
> > >     static const char * const uniwill_temp_labels[] = {
> > >   	"CPU",
> > > @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
> > >   	{ KE_END }
> > >   };
> > >   +static inline bool uniwill_device_supports(struct uniwill_data *data,
> > > +					   unsigned int features_mask,
> > > +					   unsigned int features)
> > > +{
> > > +	return (data->features & features_mask) == features;
> > > +}
> > > +
> > >   static int uniwill_ec_reg_write(void *context, unsigned int reg,
> > > unsigned int val)
> > >   {
> > >   	union acpi_object params[2] = {
> > > @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
> > >     static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct
> > > attribute *attr, int n)
> > >   {
> > > +	struct device *dev = kobj_to_dev(kobj);
> > > +	struct uniwill_data *data = dev_get_drvdata(dev);
> > > +
> > >   	if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
> > > -		if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
> > > +		if (uniwill_device_supports(data,
> > > UNIWILL_FEATURE_FN_LOCK_TOGGLE,
> > > +					    UNIWILL_FEATURE_FN_LOCK_TOGGLE))
> > >   			return attr->mode;
> > >   	}
> > >     	if (attr == &dev_attr_super_key_toggle_enable.attr) {
> > > -		if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
> > > +		if (uniwill_device_supports(data,
> > > UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> > > +					    UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> > >   			return attr->mode;
> > >   	}
> > >     	if (attr == &dev_attr_touchpad_toggle_enable.attr) {
> > > -		if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
> > > +		if (uniwill_device_supports(data,
> > > UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
> > > +					    UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
> > >   			return attr->mode;
> > >   	}
> > >     	if (attr == &dev_attr_rainbow_animation.attr ||
> > >   	    attr == &dev_attr_breathing_in_suspend.attr) {
> > > -		if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
> > > +		if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
> > > +					    UNIWILL_FEATURE_LIGHTBAR))
> > >   			return attr->mode;
> > >   	}
> > >   @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct uniwill_data
> > > *data)
> > >   {
> > >   	struct device *hdev;
> > >   -	if (!(supported_features & UNIWILL_FEATURE_HWMON))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
> > > +				     UNIWILL_FEATURE_HWMON))
> > >   		return 0;
> > >     	hdev = devm_hwmon_device_register_with_info(data->dev,
> > > "uniwill", data,
> > > @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data
> > > *data)
> > >   	unsigned int value;
> > >   	int ret;
> > >   -	if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
> > > +				     UNIWILL_FEATURE_LIGHTBAR))
> > >   		return 0;
> > >     	ret = devm_mutex_init(data->dev, &data->led_lock);
> > > @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct uniwill_data
> > > *data)
> > >   {
> > >   	int ret;
> > >   -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> > > +				     UNIWILL_FEATURE_BATTERY))
> > >   		return 0;
> > >     	ret = devm_mutex_init(data->dev, &data->battery_lock);
> > > @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct platform_device
> > > *pdev)
> > >   	if (ret < 0)
> > >   		return ret;
> > >   +	data->features = device_descriptor.features;
> > > +
> > > +	/*
> > > +	 * Some devices might need to perform some device-specific
> > > initialization steps
> > > +	 * before the supported features are initialized. Because of this we
> > > have to call
> > > +	 * this callback just after the EC itself was initialized.
> > > +	 */
> > > +	if (device_descriptor.probe) {
> > > +		ret = device_descriptor.probe(data);
> > > +		if (ret < 0)
> > > +			return ret;
> > > +	}
> > > +
> > >   	ret = uniwill_battery_init(data);
> > >   	if (ret < 0)
> > >   		return ret;
> > > @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct platform_device
> > > *pdev)
> > >     static int uniwill_suspend_keyboard(struct uniwill_data *data)
> > >   {
> > > -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> > > +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> > >   		return 0;
> > >     	/*
> > > @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct
> > > uniwill_data *data)
> > >     static int uniwill_suspend_battery(struct uniwill_data *data)
> > >   {
> > > -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> > > +				     UNIWILL_FEATURE_BATTERY))
> > >   		return 0;
> > >     	/*
> > > @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct
> > > uniwill_data *data)
> > >   	unsigned int value;
> > >   	int ret;
> > >   -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> > > +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> > >   		return 0;
> > >     	ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS,
> > > &value);
> > > @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct
> > > uniwill_data *data)
> > >     static int uniwill_resume_battery(struct uniwill_data *data)
> > >   {
> > > -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> > > +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> > > +				     UNIWILL_FEATURE_BATTERY))
> > >   		return 0;
> > >     	return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL,
> > > CHARGE_CTRL_MASK,
> > > @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
> > >   	.shutdown = uniwill_shutdown,
> > >   };
> > >   +static struct uniwill_device_descriptor lapac71h_descriptor __initdata
> > > = {
> > > +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> > > +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> > > +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> > > +		    UNIWILL_FEATURE_BATTERY |
> > > +		    UNIWILL_FEATURE_HWMON
> > > +};
> > > +
> > > +static struct uniwill_device_descriptor lapkc71f_descriptor __initdata =
> > > {
> > > +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> > > +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> > > +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> > > +		    UNIWILL_FEATURE_LIGHTBAR |
> > > +		    UNIWILL_FEATURE_BATTERY |
> > > +		    UNIWILL_FEATURE_HWMON
> > > +};
> > > +
> > > +static struct uniwill_device_descriptor empty_descriptor __initdata = {};
> > > +
> > >   static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
> > >   	{
> > >   		.ident = "XMG FUSION 15",
> > > @@ -1503,6 +1566,7 @@ static const struct dmi_system_id
> > > uniwill_dmi_table[] __initconst = {
> > >   			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
> > >   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
> > >   		},
> > > +		.driver_data = &empty_descriptor,
> > Hi,
> > 
> > Is there some advantage of having an "empty descriptor" over just NULL
> > checking its presence in the code?
> 
> One less "if"

That pays no respect to devs who have read those dummy driver_data 
lines. ;-)

> In the long run (with more features implemented and tested) there probably
> wont be any device using the empty descriptor, then it can be removed again.

Fair (so I'm fine with keeping empty_descriptor for now).

-- 
 i.
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Werner Sembach 1 month, 3 weeks ago
Am 16.12.25 um 16:20 schrieb Ilpo Järvinen:
> On Tue, 16 Dec 2025, Werner Sembach wrote:
>
>> Am 16.12.25 um 14:40 schrieb Ilpo Järvinen:
>>> On Thu, 4 Dec 2025, Werner Sembach wrote:
>>>
>>>> From: Armin Wolf <W_Armin@gmx.de>
>>>>
>>>> Future additions to the driver will depend on device-specific
>>>> initialization steps. Extend the DMI-based feature detection system
>>>> to include device descriptors. Each descriptor contains a bitmap of
>>>> supported features and a set of callback for performing
>>>> device-specific initialization.
>>>>
>>>> Signed-off-by: Armin Wolf <W_Armin@gmx.de>
>>>> Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
>>>> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
>>>> ---
>>>>    drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
>>>>    1 file changed, 142 insertions(+), 26 deletions(-)
>>>>
>>>> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c
>>>> b/drivers/platform/x86/uniwill/uniwill-acpi.c
>>>> index bd7e63dd51810..01192c32608e5 100644
>>>> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
>>>> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
>>>> @@ -322,6 +322,7 @@ struct uniwill_data {
>>>>    	struct device *dev;
>>>>    	acpi_handle handle;
>>>>    	struct regmap *regmap;
>>>> +	unsigned int features;
>>>>    	struct acpi_battery_hook hook;
>>>>    	unsigned int last_charge_ctrl;
>>>>    	struct mutex battery_lock;	/* Protects the list of currently
>>>> registered batteries */
>>>> @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
>>>>    	struct power_supply *battery;
>>>>    };
>>>>    +struct uniwill_device_descriptor {
>>>> +	unsigned int features;
>>>> +	/* Executed during driver probing */
>>>> +	int (*probe)(struct uniwill_data *data);
>>>> +};
>>>> +
>>>>    static bool force;
>>>>    module_param_unsafe(force, bool, 0);
>>>>    MODULE_PARM_DESC(force, "Force loading without checking for supported
>>>> devices\n");
>>>>    -/* Feature bitmask since the associated registers are not reliable */
>>>> -static unsigned int supported_features;
>>>> +/*
>>>> + * Contains device specific data like the feature bitmap since
>>>> + * the associated registers are not always reliable.
>>>> + */
>>>> +static struct uniwill_device_descriptor device_descriptor
>>>> __ro_after_init;
>>>>      static const char * const uniwill_temp_labels[] = {
>>>>    	"CPU",
>>>> @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
>>>>    	{ KE_END }
>>>>    };
>>>>    +static inline bool uniwill_device_supports(struct uniwill_data *data,
>>>> +					   unsigned int features_mask,
>>>> +					   unsigned int features)
>>>> +{
>>>> +	return (data->features & features_mask) == features;
>>>> +}
>>>> +
>>>>    static int uniwill_ec_reg_write(void *context, unsigned int reg,
>>>> unsigned int val)
>>>>    {
>>>>    	union acpi_object params[2] = {
>>>> @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
>>>>      static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct
>>>> attribute *attr, int n)
>>>>    {
>>>> +	struct device *dev = kobj_to_dev(kobj);
>>>> +	struct uniwill_data *data = dev_get_drvdata(dev);
>>>> +
>>>>    	if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
>>>> -		if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
>>>> +		if (uniwill_device_supports(data,
>>>> UNIWILL_FEATURE_FN_LOCK_TOGGLE,
>>>> +					    UNIWILL_FEATURE_FN_LOCK_TOGGLE))
>>>>    			return attr->mode;
>>>>    	}
>>>>      	if (attr == &dev_attr_super_key_toggle_enable.attr) {
>>>> -		if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
>>>> +		if (uniwill_device_supports(data,
>>>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>>>> +					    UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>>    			return attr->mode;
>>>>    	}
>>>>      	if (attr == &dev_attr_touchpad_toggle_enable.attr) {
>>>> -		if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
>>>> +		if (uniwill_device_supports(data,
>>>> UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
>>>> +					    UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
>>>>    			return attr->mode;
>>>>    	}
>>>>      	if (attr == &dev_attr_rainbow_animation.attr ||
>>>>    	    attr == &dev_attr_breathing_in_suspend.attr) {
>>>> -		if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
>>>> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>>>> +					    UNIWILL_FEATURE_LIGHTBAR))
>>>>    			return attr->mode;
>>>>    	}
>>>>    @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct uniwill_data
>>>> *data)
>>>>    {
>>>>    	struct device *hdev;
>>>>    -	if (!(supported_features & UNIWILL_FEATURE_HWMON))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
>>>> +				     UNIWILL_FEATURE_HWMON))
>>>>    		return 0;
>>>>      	hdev = devm_hwmon_device_register_with_info(data->dev,
>>>> "uniwill", data,
>>>> @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data
>>>> *data)
>>>>    	unsigned int value;
>>>>    	int ret;
>>>>    -	if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>>>> +				     UNIWILL_FEATURE_LIGHTBAR))
>>>>    		return 0;
>>>>      	ret = devm_mutex_init(data->dev, &data->led_lock);
>>>> @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct uniwill_data
>>>> *data)
>>>>    {
>>>>    	int ret;
>>>>    -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>>>> +				     UNIWILL_FEATURE_BATTERY))
>>>>    		return 0;
>>>>      	ret = devm_mutex_init(data->dev, &data->battery_lock);
>>>> @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct platform_device
>>>> *pdev)
>>>>    	if (ret < 0)
>>>>    		return ret;
>>>>    +	data->features = device_descriptor.features;
>>>> +
>>>> +	/*
>>>> +	 * Some devices might need to perform some device-specific
>>>> initialization steps
>>>> +	 * before the supported features are initialized. Because of this we
>>>> have to call
>>>> +	 * this callback just after the EC itself was initialized.
>>>> +	 */
>>>> +	if (device_descriptor.probe) {
>>>> +		ret = device_descriptor.probe(data);
>>>> +		if (ret < 0)
>>>> +			return ret;
>>>> +	}
>>>> +
>>>>    	ret = uniwill_battery_init(data);
>>>>    	if (ret < 0)
>>>>    		return ret;
>>>> @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct platform_device
>>>> *pdev)
>>>>      static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>>>    {
>>>> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>>>> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>>    		return 0;
>>>>      	/*
>>>> @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct
>>>> uniwill_data *data)
>>>>      static int uniwill_suspend_battery(struct uniwill_data *data)
>>>>    {
>>>> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>>>> +				     UNIWILL_FEATURE_BATTERY))
>>>>    		return 0;
>>>>      	/*
>>>> @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct
>>>> uniwill_data *data)
>>>>    	unsigned int value;
>>>>    	int ret;
>>>>    -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>>>> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>>    		return 0;
>>>>      	ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS,
>>>> &value);
>>>> @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct
>>>> uniwill_data *data)
>>>>      static int uniwill_resume_battery(struct uniwill_data *data)
>>>>    {
>>>> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>>>> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>>>> +				     UNIWILL_FEATURE_BATTERY))
>>>>    		return 0;
>>>>      	return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL,
>>>> CHARGE_CTRL_MASK,
>>>> @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
>>>>    	.shutdown = uniwill_shutdown,
>>>>    };
>>>>    +static struct uniwill_device_descriptor lapac71h_descriptor __initdata
>>>> = {
>>>> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>>>> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>>>> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>>>> +		    UNIWILL_FEATURE_BATTERY |
>>>> +		    UNIWILL_FEATURE_HWMON
>>>> +};
>>>> +
>>>> +static struct uniwill_device_descriptor lapkc71f_descriptor __initdata =
>>>> {
>>>> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>>>> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>>>> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>>>> +		    UNIWILL_FEATURE_LIGHTBAR |
>>>> +		    UNIWILL_FEATURE_BATTERY |
>>>> +		    UNIWILL_FEATURE_HWMON
>>>> +};
>>>> +
>>>> +static struct uniwill_device_descriptor empty_descriptor __initdata = {};
>>>> +
>>>>    static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>>>>    	{
>>>>    		.ident = "XMG FUSION 15",
>>>> @@ -1503,6 +1566,7 @@ static const struct dmi_system_id
>>>> uniwill_dmi_table[] __initconst = {
>>>>    			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>>>>    			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
>>>>    		},
>>>> +		.driver_data = &empty_descriptor,
>>> Hi,
>>>
>>> Is there some advantage of having an "empty descriptor" over just NULL
>>> checking its presence in the code?
>> One less "if"
> That pays no respect to devs who have read those dummy driver_data
> lines. ;-)

Thanks for doing it anyway ^^

v2 of this patch set is already finished, but i'm still waiting for the special 
case ibp gen7 being tested before sending it.

>
>> In the long run (with more features implemented and tested) there probably
>> wont be any device using the empty descriptor, then it can be removed again.
> Fair (so I'm fine with keeping empty_descriptor for now).
>
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Armin Wolf 2 months ago
Am 04.12.25 um 14:50 schrieb Werner Sembach:

> From: Armin Wolf <W_Armin@gmx.de>
>
> Future additions to the driver will depend on device-specific
> initialization steps. Extend the DMI-based feature detection system
> to include device descriptors. Each descriptor contains a bitmap of
> supported features and a set of callback for performing
> device-specific initialization.
>
> Signed-off-by: Armin Wolf <W_Armin@gmx.de>
> Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
> ---
>   drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
>   1 file changed, 142 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
> index bd7e63dd51810..01192c32608e5 100644
> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
> @@ -322,6 +322,7 @@ struct uniwill_data {
>   	struct device *dev;
>   	acpi_handle handle;
>   	struct regmap *regmap;
> +	unsigned int features;
>   	struct acpi_battery_hook hook;
>   	unsigned int last_charge_ctrl;
>   	struct mutex battery_lock;	/* Protects the list of currently registered batteries */
> @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
>   	struct power_supply *battery;
>   };
>   
> +struct uniwill_device_descriptor {
> +	unsigned int features;
> +	/* Executed during driver probing */
> +	int (*probe)(struct uniwill_data *data);
> +};
> +
>   static bool force;
>   module_param_unsafe(force, bool, 0);
>   MODULE_PARM_DESC(force, "Force loading without checking for supported devices\n");
>   
> -/* Feature bitmask since the associated registers are not reliable */
> -static unsigned int supported_features;
> +/*
> + * Contains device specific data like the feature bitmap since
> + * the associated registers are not always reliable.
> + */
> +static struct uniwill_device_descriptor device_descriptor __ro_after_init;
>   
>   static const char * const uniwill_temp_labels[] = {
>   	"CPU",
> @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
>   	{ KE_END }
>   };
>   
> +static inline bool uniwill_device_supports(struct uniwill_data *data,
> +					   unsigned int features_mask,
> +					   unsigned int features)
> +{
> +	return (data->features & features_mask) == features;

Hi,

i am not sure if having a separate feature parameter is really useful, as there
are currently no real users for it. Please replace features with feature_mask and
remove the associated parameter.

With that being addressed:
Reviewed-by: Armin Wolf <W_Armin@gmx.de>

> +}
> +
>   static int uniwill_ec_reg_write(void *context, unsigned int reg, unsigned int val)
>   {
>   	union acpi_object params[2] = {
> @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
>   
>   static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n)
>   {
> +	struct device *dev = kobj_to_dev(kobj);
> +	struct uniwill_data *data = dev_get_drvdata(dev);
> +
>   	if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
> -		if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_FN_LOCK_TOGGLE,
> +					    UNIWILL_FEATURE_FN_LOCK_TOGGLE))
>   			return attr->mode;
>   	}
>   
>   	if (attr == &dev_attr_super_key_toggle_enable.attr) {
> -		if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> +					    UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>   			return attr->mode;
>   	}
>   
>   	if (attr == &dev_attr_touchpad_toggle_enable.attr) {
> -		if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
> +					    UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
>   			return attr->mode;
>   	}
>   
>   	if (attr == &dev_attr_rainbow_animation.attr ||
>   	    attr == &dev_attr_breathing_in_suspend.attr) {
> -		if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
> +		if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
> +					    UNIWILL_FEATURE_LIGHTBAR))
>   			return attr->mode;
>   	}
>   
> @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct uniwill_data *data)
>   {
>   	struct device *hdev;
>   
> -	if (!(supported_features & UNIWILL_FEATURE_HWMON))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
> +				     UNIWILL_FEATURE_HWMON))
>   		return 0;
>   
>   	hdev = devm_hwmon_device_register_with_info(data->dev, "uniwill", data,
> @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data *data)
>   	unsigned int value;
>   	int ret;
>   
> -	if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
> +				     UNIWILL_FEATURE_LIGHTBAR))
>   		return 0;
>   
>   	ret = devm_mutex_init(data->dev, &data->led_lock);
> @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct uniwill_data *data)
>   {
>   	int ret;
>   
> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> +				     UNIWILL_FEATURE_BATTERY))
>   		return 0;
>   
>   	ret = devm_mutex_init(data->dev, &data->battery_lock);
> @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct platform_device *pdev)
>   	if (ret < 0)
>   		return ret;
>   
> +	data->features = device_descriptor.features;
> +
> +	/*
> +	 * Some devices might need to perform some device-specific initialization steps
> +	 * before the supported features are initialized. Because of this we have to call
> +	 * this callback just after the EC itself was initialized.
> +	 */
> +	if (device_descriptor.probe) {
> +		ret = device_descriptor.probe(data);
> +		if (ret < 0)
> +			return ret;
> +	}
> +
>   	ret = uniwill_battery_init(data);
>   	if (ret < 0)
>   		return ret;
> @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct platform_device *pdev)
>   
>   static int uniwill_suspend_keyboard(struct uniwill_data *data)
>   {
> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>   		return 0;
>   
>   	/*
> @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct uniwill_data *data)
>   
>   static int uniwill_suspend_battery(struct uniwill_data *data)
>   {
> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> +				     UNIWILL_FEATURE_BATTERY))
>   		return 0;
>   
>   	/*
> @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
>   	unsigned int value;
>   	int ret;
>   
> -	if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
> +				     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>   		return 0;
>   
>   	ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
> @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct uniwill_data *data)
>   
>   static int uniwill_resume_battery(struct uniwill_data *data)
>   {
> -	if (!(supported_features & UNIWILL_FEATURE_BATTERY))
> +	if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
> +				     UNIWILL_FEATURE_BATTERY))
>   		return 0;
>   
>   	return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
> @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
>   	.shutdown = uniwill_shutdown,
>   };
>   
> +static struct uniwill_device_descriptor lapac71h_descriptor __initdata = {
> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> +		    UNIWILL_FEATURE_BATTERY |
> +		    UNIWILL_FEATURE_HWMON
> +};
> +
> +static struct uniwill_device_descriptor lapkc71f_descriptor __initdata = {
> +	.features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> +		    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> +		    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> +		    UNIWILL_FEATURE_LIGHTBAR |
> +		    UNIWILL_FEATURE_BATTERY |
> +		    UNIWILL_FEATURE_HWMON
> +};
> +
> +static struct uniwill_device_descriptor empty_descriptor __initdata = {};
> +
>   static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   	{
>   		.ident = "XMG FUSION 15",
> @@ -1503,6 +1566,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "XMG FUSION 15",
> @@ -1510,6 +1574,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71B"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "Intel NUC x15",
> @@ -1517,11 +1582,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
>   			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPAC71H"),
>   		},
> -		.driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> -					UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> -					UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> -					UNIWILL_FEATURE_BATTERY |
> -					UNIWILL_FEATURE_HWMON),
> +		.driver_data = &lapac71h_descriptor,
>   	},
>   	{
>   		.ident = "Intel NUC x15",
> @@ -1529,12 +1590,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
>   			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPKC71F"),
>   		},
> -		.driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
> -					UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
> -					UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
> -					UNIWILL_FEATURE_LIGHTBAR |
> -					UNIWILL_FEATURE_BATTERY |
> -					UNIWILL_FEATURE_HWMON),
> +		.driver_data = &lapkc71f_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
> @@ -1542,6 +1598,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTxX1"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
> @@ -1549,6 +1606,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTQx1"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14/16 Gen7 Intel",
> @@ -1556,6 +1614,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxARX1_PHxAQF1"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 16 Gen7 Intel/Commodore Omnia-Book Pro Gen 7",
> @@ -1563,6 +1622,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH6AG01_PH6AQ71_PH6AQI1"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14/16 Gen8 Intel/Commodore Omnia-Book Pro Gen 8",
> @@ -1570,6 +1630,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14 Gen8 Intel/Commodore Omnia-Book Pro Gen 8",
> @@ -1577,6 +1638,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PG31"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 16 Gen8 Intel",
> @@ -1584,6 +1646,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH6PG01_PH6PG71"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14/15 Gen9 AMD",
> @@ -1591,6 +1654,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14/15 Gen9 Intel/Commodore Omnia-Book 15 Gen9",
> @@ -1598,6 +1662,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxMRXx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
> @@ -1605,6 +1670,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxHP4NAx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
> @@ -1612,6 +1678,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxKK4NAx_XxSP4NAx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Pro 15 Gen10 Intel",
> @@ -1619,6 +1686,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxAR4NAx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Max 15 Gen10 AMD",
> @@ -1626,6 +1694,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5KK45xS_X5SP45xS"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
> @@ -1633,6 +1702,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6HP45xU"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
> @@ -1640,6 +1710,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6KK45xU_X6SP45xU"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Max 15 Gen10 Intel",
> @@ -1647,6 +1718,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5AR45xS"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO InfinityBook Max 16 Gen10 Intel",
> @@ -1654,6 +1726,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR55xU"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15 Gen1 AMD",
> @@ -1661,6 +1734,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A1650TI"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15 Gen1 AMD",
> @@ -1668,6 +1742,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A2060"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 17 Gen1 AMD",
> @@ -1675,6 +1750,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A1650TI"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 17 Gen1 AMD",
> @@ -1682,6 +1758,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A2060"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15 Gen1 Intel",
> @@ -1689,6 +1766,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I1650TI"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15 Gen1 Intel",
> @@ -1696,6 +1774,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I2060"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 17 Gen1 Intel",
> @@ -1703,6 +1782,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I1650TI"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 17 Gen1 Intel",
> @@ -1710,6 +1790,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I2060"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Trinity 15 Intel Gen1",
> @@ -1717,6 +1798,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1501I"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Trinity 17 Intel Gen1",
> @@ -1724,6 +1806,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1701I"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15/17 Gen2 AMD",
> @@ -1731,6 +1814,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxMGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15/17 Gen2 Intel",
> @@ -1738,6 +1822,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxNGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 AMD",
> @@ -1745,6 +1830,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxZGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 Intel",
> @@ -1752,6 +1838,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxTGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris/Polaris 15/17 Gen4 AMD",
> @@ -1759,6 +1846,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 15 Gen4 Intel",
> @@ -1766,6 +1854,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxAGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Polaris 15/17 Gen5 AMD",
> @@ -1773,6 +1862,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16 Gen5 AMD",
> @@ -1780,6 +1870,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16/17 Gen5 Intel/Commodore ORION Gen 5",
> @@ -1787,6 +1878,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxPXxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris Slim 15 Gen6 AMD",
> @@ -1794,6 +1886,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris Slim 15 Gen6 Intel/Commodore ORION Slim 15 Gen6",
> @@ -1801,6 +1894,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM5IXxA"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 16 Gen6",
> @@ -1808,6 +1902,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB1"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 16 Gen6",
> @@ -1815,6 +1910,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB2"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 17 Gen6 Intel/Commodore ORION 17 Gen6",
> @@ -1822,6 +1918,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM7IXxN"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16 Gen7 AMD",
> @@ -1829,6 +1926,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6FR5xxY"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16 Gen7 Intel",
> @@ -1836,6 +1934,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Stellaris 16 Gen7 Intel",
> @@ -1843,6 +1942,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY_mLED"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Pulse 14 Gen1 AMD",
> @@ -1850,6 +1950,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1401"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Pulse 15 Gen1 AMD",
> @@ -1857,6 +1958,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1501"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{
>   		.ident = "TUXEDO Pulse 15 Gen2 AMD",
> @@ -1864,6 +1966,7 @@ static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>   			DMI_EXACT_MATCH(DMI_BOARD_NAME, "PF5LUXG"),
>   		},
> +		.driver_data = &empty_descriptor,
>   	},
>   	{ }
>   };
> @@ -1871,6 +1974,7 @@ MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
>   
>   static int __init uniwill_init(void)
>   {
> +	const struct uniwill_device_descriptor *descriptor;
>   	const struct dmi_system_id *id;
>   	int ret;
>   
> @@ -1880,10 +1984,22 @@ static int __init uniwill_init(void)
>   			return -ENODEV;
>   
>   		/* Assume that the device supports all features */
> -		supported_features = UINT_MAX;
> +		device_descriptor.features = UINT_MAX;
>   		pr_warn("Loading on a potentially unsupported device\n");
>   	} else {
> -		supported_features = (uintptr_t)id->driver_data;
> +		/*
> +		 * Some devices might support additional features depending on
> +		 * the BIOS version/date, so we call this callback to let them
> +		 * modify their device descriptor accordingly.
> +		 */
> +		if (id->callback) {
> +			ret = id->callback(id);
> +			if (ret < 0)
> +				return ret;
> +		}
> +
> +		descriptor = id->driver_data;
> +		device_descriptor = *descriptor;
>   	}
>   
>   	ret = platform_driver_register(&uniwill_driver);
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Werner Sembach 2 months ago
Am 04.12.25 um 17:03 schrieb Armin Wolf:
> Am 04.12.25 um 14:50 schrieb Werner Sembach:
>
>> From: Armin Wolf <W_Armin@gmx.de>
>>
>> Future additions to the driver will depend on device-specific
>> initialization steps. Extend the DMI-based feature detection system
>> to include device descriptors. Each descriptor contains a bitmap of
>> supported features and a set of callback for performing
>> device-specific initialization.
>>
>> Signed-off-by: Armin Wolf <W_Armin@gmx.de>
>> Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
>> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
>> ---
>>   drivers/platform/x86/uniwill/uniwill-acpi.c | 168 +++++++++++++++++---
>>   1 file changed, 142 insertions(+), 26 deletions(-)
>>
>> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c 
>> b/drivers/platform/x86/uniwill/uniwill-acpi.c
>> index bd7e63dd51810..01192c32608e5 100644
>> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
>> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
>> @@ -322,6 +322,7 @@ struct uniwill_data {
>>       struct device *dev;
>>       acpi_handle handle;
>>       struct regmap *regmap;
>> +    unsigned int features;
>>       struct acpi_battery_hook hook;
>>       unsigned int last_charge_ctrl;
>>       struct mutex battery_lock;    /* Protects the list of currently 
>> registered batteries */
>> @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
>>       struct power_supply *battery;
>>   };
>>   +struct uniwill_device_descriptor {
>> +    unsigned int features;
>> +    /* Executed during driver probing */
>> +    int (*probe)(struct uniwill_data *data);
>> +};
>> +
>>   static bool force;
>>   module_param_unsafe(force, bool, 0);
>>   MODULE_PARM_DESC(force, "Force loading without checking for 
>> supported devices\n");
>>   -/* Feature bitmask since the associated registers are not reliable */
>> -static unsigned int supported_features;
>> +/*
>> + * Contains device specific data like the feature bitmap since
>> + * the associated registers are not always reliable.
>> + */
>> +static struct uniwill_device_descriptor device_descriptor 
>> __ro_after_init;
>>     static const char * const uniwill_temp_labels[] = {
>>       "CPU",
>> @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
>>       { KE_END }
>>   };
>>   +static inline bool uniwill_device_supports(struct uniwill_data *data,
>> +                       unsigned int features_mask,
>> +                       unsigned int features)
>> +{
>> +    return (data->features & features_mask) == features;
>
> Hi,
>
> i am not sure if having a separate feature parameter is really useful, 
> as there
> are currently no real users for it. Please replace features with 
> feature_mask and
> remove the associated parameter.
There might be mutually exclusive features that can be represented with 
more then 1 bit to save some bit space, e.g. 3 different kind of 
keyboard backlight controls that could be represented by 2 bits: 00 -> 
None, 01 -> Type 1, 10 -> Type 2, 11 -> Type 3 instead of having one bit 
for each type.
>
> With that being addressed:
> Reviewed-by: Armin Wolf <W_Armin@gmx.de>
>
>> +}
>> +
>>   static int uniwill_ec_reg_write(void *context, unsigned int reg, 
>> unsigned int val)
>>   {
>>       union acpi_object params[2] = {
>> @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
>>     static umode_t uniwill_attr_is_visible(struct kobject *kobj, 
>> struct attribute *attr, int n)
>>   {
>> +    struct device *dev = kobj_to_dev(kobj);
>> +    struct uniwill_data *data = dev_get_drvdata(dev);
>> +
>>       if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
>> -        if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
>> +        if (uniwill_device_supports(data, 
>> UNIWILL_FEATURE_FN_LOCK_TOGGLE,
>> +                        UNIWILL_FEATURE_FN_LOCK_TOGGLE))
>>               return attr->mode;
>>       }
>>         if (attr == &dev_attr_super_key_toggle_enable.attr) {
>> -        if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
>> +        if (uniwill_device_supports(data, 
>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>> +                        UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>               return attr->mode;
>>       }
>>         if (attr == &dev_attr_touchpad_toggle_enable.attr) {
>> -        if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
>> +        if (uniwill_device_supports(data, 
>> UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
>> +                        UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
>>               return attr->mode;
>>       }
>>         if (attr == &dev_attr_rainbow_animation.attr ||
>>           attr == &dev_attr_breathing_in_suspend.attr) {
>> -        if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
>> +        if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>> +                        UNIWILL_FEATURE_LIGHTBAR))
>>               return attr->mode;
>>       }
>>   @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct 
>> uniwill_data *data)
>>   {
>>       struct device *hdev;
>>   -    if (!(supported_features & UNIWILL_FEATURE_HWMON))
>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
>> +                     UNIWILL_FEATURE_HWMON))
>>           return 0;
>>         hdev = devm_hwmon_device_register_with_info(data->dev, 
>> "uniwill", data,
>> @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct uniwill_data 
>> *data)
>>       unsigned int value;
>>       int ret;
>>   -    if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>> +                     UNIWILL_FEATURE_LIGHTBAR))
>>           return 0;
>>         ret = devm_mutex_init(data->dev, &data->led_lock);
>> @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct 
>> uniwill_data *data)
>>   {
>>       int ret;
>>   -    if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>> +                     UNIWILL_FEATURE_BATTERY))
>>           return 0;
>>         ret = devm_mutex_init(data->dev, &data->battery_lock);
>> @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct 
>> platform_device *pdev)
>>       if (ret < 0)
>>           return ret;
>>   +    data->features = device_descriptor.features;
>> +
>> +    /*
>> +     * Some devices might need to perform some device-specific 
>> initialization steps
>> +     * before the supported features are initialized. Because of 
>> this we have to call
>> +     * this callback just after the EC itself was initialized.
>> +     */
>> +    if (device_descriptor.probe) {
>> +        ret = device_descriptor.probe(data);
>> +        if (ret < 0)
>> +            return ret;
>> +    }
>> +
>>       ret = uniwill_battery_init(data);
>>       if (ret < 0)
>>           return ret;
>> @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct 
>> platform_device *pdev)
>>     static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>   {
>> -    if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>> +    if (!uniwill_device_supports(data, 
>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>> +                     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>           return 0;
>>         /*
>> @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct 
>> uniwill_data *data)
>>     static int uniwill_suspend_battery(struct uniwill_data *data)
>>   {
>> -    if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>> +                     UNIWILL_FEATURE_BATTERY))
>>           return 0;
>>         /*
>> @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct 
>> uniwill_data *data)
>>       unsigned int value;
>>       int ret;
>>   -    if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>> +    if (!uniwill_device_supports(data, 
>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>> +                     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>           return 0;
>>         ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
>> @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct 
>> uniwill_data *data)
>>     static int uniwill_resume_battery(struct uniwill_data *data)
>>   {
>> -    if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>> +                     UNIWILL_FEATURE_BATTERY))
>>           return 0;
>>         return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, 
>> CHARGE_CTRL_MASK,
>> @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
>>       .shutdown = uniwill_shutdown,
>>   };
>>   +static struct uniwill_device_descriptor lapac71h_descriptor 
>> __initdata = {
>> +    .features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>> +            UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>> +            UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>> +            UNIWILL_FEATURE_BATTERY |
>> +            UNIWILL_FEATURE_HWMON
>> +};
>> +
>> +static struct uniwill_device_descriptor lapkc71f_descriptor 
>> __initdata = {
>> +    .features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>> +            UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>> +            UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>> +            UNIWILL_FEATURE_LIGHTBAR |
>> +            UNIWILL_FEATURE_BATTERY |
>> +            UNIWILL_FEATURE_HWMON
>> +};
>> +
>> +static struct uniwill_device_descriptor empty_descriptor __initdata 
>> = {};
>> +
>>   static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>>       {
>>           .ident = "XMG FUSION 15",
>> @@ -1503,6 +1566,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "XMG FUSION 15",
>> @@ -1510,6 +1574,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71B"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "Intel NUC x15",
>> @@ -1517,11 +1582,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client 
>> Systems"),
>>               DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPAC71H"),
>>           },
>> -        .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>> -                    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>> -                    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>> -                    UNIWILL_FEATURE_BATTERY |
>> -                    UNIWILL_FEATURE_HWMON),
>> +        .driver_data = &lapac71h_descriptor,
>>       },
>>       {
>>           .ident = "Intel NUC x15",
>> @@ -1529,12 +1590,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client 
>> Systems"),
>>               DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPKC71F"),
>>           },
>> -        .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>> -                    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>> -                    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>> -                    UNIWILL_FEATURE_LIGHTBAR |
>> -                    UNIWILL_FEATURE_BATTERY |
>> -                    UNIWILL_FEATURE_HWMON),
>> +        .driver_data = &lapkc71f_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
>> @@ -1542,6 +1598,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTxX1"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
>> @@ -1549,6 +1606,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTQx1"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14/16 Gen7 Intel",
>> @@ -1556,6 +1614,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxARX1_PHxAQF1"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 16 Gen7 Intel/Commodore 
>> Omnia-Book Pro Gen 7",
>> @@ -1563,6 +1622,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, 
>> "PH6AG01_PH6AQ71_PH6AQI1"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14/16 Gen8 
>> Intel/Commodore Omnia-Book Pro Gen 8",
>> @@ -1570,6 +1630,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14 Gen8 Intel/Commodore 
>> Omnia-Book Pro Gen 8",
>> @@ -1577,6 +1638,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PG31"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 16 Gen8 Intel",
>> @@ -1584,6 +1646,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH6PG01_PH6PG71"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen9 AMD",
>> @@ -1591,6 +1654,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen9 
>> Intel/Commodore Omnia-Book 15 Gen9",
>> @@ -1598,6 +1662,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxMRXx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
>> @@ -1605,6 +1670,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxHP4NAx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
>> @@ -1612,6 +1678,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxKK4NAx_XxSP4NAx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Pro 15 Gen10 Intel",
>> @@ -1619,6 +1686,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxAR4NAx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Max 15 Gen10 AMD",
>> @@ -1626,6 +1694,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5KK45xS_X5SP45xS"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
>> @@ -1633,6 +1702,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6HP45xU"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
>> @@ -1640,6 +1710,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6KK45xU_X6SP45xU"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Max 15 Gen10 Intel",
>> @@ -1647,6 +1718,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5AR45xS"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO InfinityBook Max 16 Gen10 Intel",
>> @@ -1654,6 +1726,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR55xU"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15 Gen1 AMD",
>> @@ -1661,6 +1734,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A1650TI"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15 Gen1 AMD",
>> @@ -1668,6 +1742,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A2060"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 17 Gen1 AMD",
>> @@ -1675,6 +1750,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A1650TI"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 17 Gen1 AMD",
>> @@ -1682,6 +1758,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A2060"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15 Gen1 Intel",
>> @@ -1689,6 +1766,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I1650TI"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15 Gen1 Intel",
>> @@ -1696,6 +1774,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I2060"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 17 Gen1 Intel",
>> @@ -1703,6 +1782,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I1650TI"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 17 Gen1 Intel",
>> @@ -1710,6 +1790,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I2060"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Trinity 15 Intel Gen1",
>> @@ -1717,6 +1798,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1501I"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Trinity 17 Intel Gen1",
>> @@ -1724,6 +1806,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1701I"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15/17 Gen2 AMD",
>> @@ -1731,6 +1814,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxMGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15/17 Gen2 Intel",
>> @@ -1738,6 +1822,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxNGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 AMD",
>> @@ -1745,6 +1830,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxZGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 Intel",
>> @@ -1752,6 +1838,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxTGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris/Polaris 15/17 Gen4 AMD",
>> @@ -1759,6 +1846,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 15 Gen4 Intel",
>> @@ -1766,6 +1854,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxAGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Polaris 15/17 Gen5 AMD",
>> @@ -1773,6 +1862,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16 Gen5 AMD",
>> @@ -1780,6 +1870,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16/17 Gen5 Intel/Commodore ORION 
>> Gen 5",
>> @@ -1787,6 +1878,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxPXxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris Slim 15 Gen6 AMD",
>> @@ -1794,6 +1886,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris Slim 15 Gen6 Intel/Commodore 
>> ORION Slim 15 Gen6",
>> @@ -1801,6 +1894,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM5IXxA"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 16 
>> Gen6",
>> @@ -1808,6 +1902,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB1"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 16 
>> Gen6",
>> @@ -1815,6 +1910,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB2"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 17 Gen6 Intel/Commodore ORION 17 
>> Gen6",
>> @@ -1822,6 +1918,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM7IXxN"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16 Gen7 AMD",
>> @@ -1829,6 +1926,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6FR5xxY"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16 Gen7 Intel",
>> @@ -1836,6 +1934,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Stellaris 16 Gen7 Intel",
>> @@ -1843,6 +1942,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY_mLED"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Pulse 14 Gen1 AMD",
>> @@ -1850,6 +1950,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1401"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Pulse 15 Gen1 AMD",
>> @@ -1857,6 +1958,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1501"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       {
>>           .ident = "TUXEDO Pulse 15 Gen2 AMD",
>> @@ -1864,6 +1966,7 @@ static const struct dmi_system_id 
>> uniwill_dmi_table[] __initconst = {
>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PF5LUXG"),
>>           },
>> +        .driver_data = &empty_descriptor,
>>       },
>>       { }
>>   };
>> @@ -1871,6 +1974,7 @@ MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
>>     static int __init uniwill_init(void)
>>   {
>> +    const struct uniwill_device_descriptor *descriptor;
>>       const struct dmi_system_id *id;
>>       int ret;
>>   @@ -1880,10 +1984,22 @@ static int __init uniwill_init(void)
>>               return -ENODEV;
>>             /* Assume that the device supports all features */
>> -        supported_features = UINT_MAX;
>> +        device_descriptor.features = UINT_MAX;
>>           pr_warn("Loading on a potentially unsupported device\n");
>>       } else {
>> -        supported_features = (uintptr_t)id->driver_data;
>> +        /*
>> +         * Some devices might support additional features depending on
>> +         * the BIOS version/date, so we call this callback to let them
>> +         * modify their device descriptor accordingly.
>> +         */
>> +        if (id->callback) {
>> +            ret = id->callback(id);
>> +            if (ret < 0)
>> +                return ret;
>> +        }
>> +
>> +        descriptor = id->driver_data;
>> +        device_descriptor = *descriptor;
>>       }
>>         ret = platform_driver_register(&uniwill_driver);
Re: [PATCH 1/2] platform/x86: uniwill-laptop: Introduce device descriptor system
Posted by Armin Wolf 2 months ago
Am 04.12.25 um 22:03 schrieb Werner Sembach:

>
> Am 04.12.25 um 17:03 schrieb Armin Wolf:
>> Am 04.12.25 um 14:50 schrieb Werner Sembach:
>>
>>> From: Armin Wolf <W_Armin@gmx.de>
>>>
>>> Future additions to the driver will depend on device-specific
>>> initialization steps. Extend the DMI-based feature detection system
>>> to include device descriptors. Each descriptor contains a bitmap of
>>> supported features and a set of callback for performing
>>> device-specific initialization.
>>>
>>> Signed-off-by: Armin Wolf <W_Armin@gmx.de>
>>> Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
>>> Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
>>> ---
>>>   drivers/platform/x86/uniwill/uniwill-acpi.c | 168 
>>> +++++++++++++++++---
>>>   1 file changed, 142 insertions(+), 26 deletions(-)
>>>
>>> diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c 
>>> b/drivers/platform/x86/uniwill/uniwill-acpi.c
>>> index bd7e63dd51810..01192c32608e5 100644
>>> --- a/drivers/platform/x86/uniwill/uniwill-acpi.c
>>> +++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
>>> @@ -322,6 +322,7 @@ struct uniwill_data {
>>>       struct device *dev;
>>>       acpi_handle handle;
>>>       struct regmap *regmap;
>>> +    unsigned int features;
>>>       struct acpi_battery_hook hook;
>>>       unsigned int last_charge_ctrl;
>>>       struct mutex battery_lock;    /* Protects the list of 
>>> currently registered batteries */
>>> @@ -341,12 +342,21 @@ struct uniwill_battery_entry {
>>>       struct power_supply *battery;
>>>   };
>>>   +struct uniwill_device_descriptor {
>>> +    unsigned int features;
>>> +    /* Executed during driver probing */
>>> +    int (*probe)(struct uniwill_data *data);
>>> +};
>>> +
>>>   static bool force;
>>>   module_param_unsafe(force, bool, 0);
>>>   MODULE_PARM_DESC(force, "Force loading without checking for 
>>> supported devices\n");
>>>   -/* Feature bitmask since the associated registers are not 
>>> reliable */
>>> -static unsigned int supported_features;
>>> +/*
>>> + * Contains device specific data like the feature bitmap since
>>> + * the associated registers are not always reliable.
>>> + */
>>> +static struct uniwill_device_descriptor device_descriptor 
>>> __ro_after_init;
>>>     static const char * const uniwill_temp_labels[] = {
>>>       "CPU",
>>> @@ -411,6 +421,13 @@ static const struct key_entry uniwill_keymap[] = {
>>>       { KE_END }
>>>   };
>>>   +static inline bool uniwill_device_supports(struct uniwill_data 
>>> *data,
>>> +                       unsigned int features_mask,
>>> +                       unsigned int features)
>>> +{
>>> +    return (data->features & features_mask) == features;
>>
>> Hi,
>>
>> i am not sure if having a separate feature parameter is really 
>> useful, as there
>> are currently no real users for it. Please replace features with 
>> feature_mask and
>> remove the associated parameter.
> There might be mutually exclusive features that can be represented 
> with more then 1 bit to save some bit space, e.g. 3 different kind of 
> keyboard backlight controls that could be represented by 2 bits: 00 -> 
> None, 01 -> Type 1, 10 -> Type 2, 11 -> Type 3 instead of having one 
> bit for each type.

Unlikely that we will ever have something like this, such scenarios would likely have a single feature bit
and a separate enum field inside uniwill_data. Additionally, the additional third parameter clutters the source code,
so i would like to get rid of it.

Thanks,
Armin Wolf

>>
>> With that being addressed:
>> Reviewed-by: Armin Wolf <W_Armin@gmx.de>
>>
>>> +}
>>> +
>>>   static int uniwill_ec_reg_write(void *context, unsigned int reg, 
>>> unsigned int val)
>>>   {
>>>       union acpi_object params[2] = {
>>> @@ -799,24 +816,31 @@ static struct attribute *uniwill_attrs[] = {
>>>     static umode_t uniwill_attr_is_visible(struct kobject *kobj, 
>>> struct attribute *attr, int n)
>>>   {
>>> +    struct device *dev = kobj_to_dev(kobj);
>>> +    struct uniwill_data *data = dev_get_drvdata(dev);
>>> +
>>>       if (attr == &dev_attr_fn_lock_toggle_enable.attr) {
>>> -        if (supported_features & UNIWILL_FEATURE_FN_LOCK_TOGGLE)
>>> +        if (uniwill_device_supports(data, 
>>> UNIWILL_FEATURE_FN_LOCK_TOGGLE,
>>> +                        UNIWILL_FEATURE_FN_LOCK_TOGGLE))
>>>               return attr->mode;
>>>       }
>>>         if (attr == &dev_attr_super_key_toggle_enable.attr) {
>>> -        if (supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE)
>>> +        if (uniwill_device_supports(data, 
>>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>>> +                        UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>               return attr->mode;
>>>       }
>>>         if (attr == &dev_attr_touchpad_toggle_enable.attr) {
>>> -        if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
>>> +        if (uniwill_device_supports(data, 
>>> UNIWILL_FEATURE_TOUCHPAD_TOGGLE,
>>> +                        UNIWILL_FEATURE_TOUCHPAD_TOGGLE))
>>>               return attr->mode;
>>>       }
>>>         if (attr == &dev_attr_rainbow_animation.attr ||
>>>           attr == &dev_attr_breathing_in_suspend.attr) {
>>> -        if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
>>> +        if (uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>>> +                        UNIWILL_FEATURE_LIGHTBAR))
>>>               return attr->mode;
>>>       }
>>>   @@ -944,7 +968,8 @@ static int uniwill_hwmon_init(struct 
>>> uniwill_data *data)
>>>   {
>>>       struct device *hdev;
>>>   -    if (!(supported_features & UNIWILL_FEATURE_HWMON))
>>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_HWMON,
>>> +                     UNIWILL_FEATURE_HWMON))
>>>           return 0;
>>>         hdev = devm_hwmon_device_register_with_info(data->dev, 
>>> "uniwill", data,
>>> @@ -1019,7 +1044,8 @@ static int uniwill_led_init(struct 
>>> uniwill_data *data)
>>>       unsigned int value;
>>>       int ret;
>>>   -    if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
>>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_LIGHTBAR,
>>> +                     UNIWILL_FEATURE_LIGHTBAR))
>>>           return 0;
>>>         ret = devm_mutex_init(data->dev, &data->led_lock);
>>> @@ -1232,7 +1258,8 @@ static int uniwill_battery_init(struct 
>>> uniwill_data *data)
>>>   {
>>>       int ret;
>>>   -    if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>>> +                     UNIWILL_FEATURE_BATTERY))
>>>           return 0;
>>>         ret = devm_mutex_init(data->dev, &data->battery_lock);
>>> @@ -1361,6 +1388,19 @@ static int uniwill_probe(struct 
>>> platform_device *pdev)
>>>       if (ret < 0)
>>>           return ret;
>>>   +    data->features = device_descriptor.features;
>>> +
>>> +    /*
>>> +     * Some devices might need to perform some device-specific 
>>> initialization steps
>>> +     * before the supported features are initialized. Because of 
>>> this we have to call
>>> +     * this callback just after the EC itself was initialized.
>>> +     */
>>> +    if (device_descriptor.probe) {
>>> +        ret = device_descriptor.probe(data);
>>> +        if (ret < 0)
>>> +            return ret;
>>> +    }
>>> +
>>>       ret = uniwill_battery_init(data);
>>>       if (ret < 0)
>>>           return ret;
>>> @@ -1385,7 +1425,8 @@ static void uniwill_shutdown(struct 
>>> platform_device *pdev)
>>>     static int uniwill_suspend_keyboard(struct uniwill_data *data)
>>>   {
>>> -    if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>> +    if (!uniwill_device_supports(data, 
>>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>>> +                     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>           return 0;
>>>         /*
>>> @@ -1397,7 +1438,8 @@ static int uniwill_suspend_keyboard(struct 
>>> uniwill_data *data)
>>>     static int uniwill_suspend_battery(struct uniwill_data *data)
>>>   {
>>> -    if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>>> +                     UNIWILL_FEATURE_BATTERY))
>>>           return 0;
>>>         /*
>>> @@ -1432,7 +1474,8 @@ static int uniwill_resume_keyboard(struct 
>>> uniwill_data *data)
>>>       unsigned int value;
>>>       int ret;
>>>   -    if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>> +    if (!uniwill_device_supports(data, 
>>> UNIWILL_FEATURE_SUPER_KEY_TOGGLE,
>>> +                     UNIWILL_FEATURE_SUPER_KEY_TOGGLE))
>>>           return 0;
>>>         ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
>>> @@ -1448,7 +1491,8 @@ static int uniwill_resume_keyboard(struct 
>>> uniwill_data *data)
>>>     static int uniwill_resume_battery(struct uniwill_data *data)
>>>   {
>>> -    if (!(supported_features & UNIWILL_FEATURE_BATTERY))
>>> +    if (!uniwill_device_supports(data, UNIWILL_FEATURE_BATTERY,
>>> +                     UNIWILL_FEATURE_BATTERY))
>>>           return 0;
>>>         return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, 
>>> CHARGE_CTRL_MASK,
>>> @@ -1496,6 +1540,25 @@ static struct platform_driver uniwill_driver = {
>>>       .shutdown = uniwill_shutdown,
>>>   };
>>>   +static struct uniwill_device_descriptor lapac71h_descriptor 
>>> __initdata = {
>>> +    .features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>>> +            UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>>> +            UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>>> +            UNIWILL_FEATURE_BATTERY |
>>> +            UNIWILL_FEATURE_HWMON
>>> +};
>>> +
>>> +static struct uniwill_device_descriptor lapkc71f_descriptor 
>>> __initdata = {
>>> +    .features = UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>>> +            UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>>> +            UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>>> +            UNIWILL_FEATURE_LIGHTBAR |
>>> +            UNIWILL_FEATURE_BATTERY |
>>> +            UNIWILL_FEATURE_HWMON
>>> +};
>>> +
>>> +static struct uniwill_device_descriptor empty_descriptor __initdata 
>>> = {};
>>> +
>>>   static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
>>>       {
>>>           .ident = "XMG FUSION 15",
>>> @@ -1503,6 +1566,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71A"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "XMG FUSION 15",
>>> @@ -1510,6 +1574,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "SchenkerTechnologiesGmbH"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "LAPQC71B"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "Intel NUC x15",
>>> @@ -1517,11 +1582,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client 
>>> Systems"),
>>>               DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPAC71H"),
>>>           },
>>> -        .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>>> -                    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>>> -                    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>>> -                    UNIWILL_FEATURE_BATTERY |
>>> -                    UNIWILL_FEATURE_HWMON),
>>> +        .driver_data = &lapac71h_descriptor,
>>>       },
>>>       {
>>>           .ident = "Intel NUC x15",
>>> @@ -1529,12 +1590,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client 
>>> Systems"),
>>>               DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPKC71F"),
>>>           },
>>> -        .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK_TOGGLE |
>>> -                    UNIWILL_FEATURE_SUPER_KEY_TOGGLE |
>>> -                    UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
>>> -                    UNIWILL_FEATURE_LIGHTBAR |
>>> -                    UNIWILL_FEATURE_BATTERY |
>>> -                    UNIWILL_FEATURE_HWMON),
>>> +        .driver_data = &lapkc71f_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
>>> @@ -1542,6 +1598,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTxX1"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14 Gen6 Intel",
>>> @@ -1549,6 +1606,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxTQx1"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14/16 Gen7 Intel",
>>> @@ -1556,6 +1614,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PHxARX1_PHxAQF1"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 16 Gen7 Intel/Commodore 
>>> Omnia-Book Pro Gen 7",
>>> @@ -1563,6 +1622,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, 
>>> "PH6AG01_PH6AQ71_PH6AQI1"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14/16 Gen8 
>>> Intel/Commodore Omnia-Book Pro Gen 8",
>>> @@ -1570,6 +1630,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14 Gen8 Intel/Commodore 
>>> Omnia-Book Pro Gen 8",
>>> @@ -1577,6 +1638,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH4PG31"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 16 Gen8 Intel",
>>> @@ -1584,6 +1646,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PH6PG01_PH6PG71"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen9 AMD",
>>> @@ -1591,6 +1654,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxHRXx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen9 
>>> Intel/Commodore Omnia-Book 15 Gen9",
>>> @@ -1598,6 +1662,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GXxMRXx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
>>> @@ -1605,6 +1670,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxHP4NAx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 14/15 Gen10 AMD",
>>> @@ -1612,6 +1678,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxKK4NAx_XxSP4NAx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Pro 15 Gen10 Intel",
>>> @@ -1619,6 +1686,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "XxAR4NAx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Max 15 Gen10 AMD",
>>> @@ -1626,6 +1694,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5KK45xS_X5SP45xS"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
>>> @@ -1633,6 +1702,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6HP45xU"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Max 16 Gen10 AMD",
>>> @@ -1640,6 +1710,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6KK45xU_X6SP45xU"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Max 15 Gen10 Intel",
>>> @@ -1647,6 +1718,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X5AR45xS"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO InfinityBook Max 16 Gen10 Intel",
>>> @@ -1654,6 +1726,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR55xU"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15 Gen1 AMD",
>>> @@ -1661,6 +1734,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A1650TI"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15 Gen1 AMD",
>>> @@ -1668,6 +1742,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501A2060"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 17 Gen1 AMD",
>>> @@ -1675,6 +1750,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A1650TI"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 17 Gen1 AMD",
>>> @@ -1682,6 +1758,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701A2060"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15 Gen1 Intel",
>>> @@ -1689,6 +1766,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I1650TI"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15 Gen1 Intel",
>>> @@ -1696,6 +1774,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1501I2060"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 17 Gen1 Intel",
>>> @@ -1703,6 +1782,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I1650TI"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 17 Gen1 Intel",
>>> @@ -1710,6 +1790,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "POLARIS1701I2060"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Trinity 15 Intel Gen1",
>>> @@ -1717,6 +1798,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1501I"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Trinity 17 Intel Gen1",
>>> @@ -1724,6 +1806,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "TRINITY1701I"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15/17 Gen2 AMD",
>>> @@ -1731,6 +1814,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxMGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15/17 Gen2 Intel",
>>> @@ -1738,6 +1822,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxNGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 AMD",
>>> @@ -1745,6 +1830,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxZGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris/Polaris 15/17 Gen3 Intel",
>>> @@ -1752,6 +1838,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxTGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris/Polaris 15/17 Gen4 AMD",
>>> @@ -1759,6 +1846,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 15 Gen4 Intel",
>>> @@ -1766,6 +1854,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxAGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Polaris 15/17 Gen5 AMD",
>>> @@ -1773,6 +1862,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16 Gen5 AMD",
>>> @@ -1780,6 +1870,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16/17 Gen5 Intel/Commodore 
>>> ORION Gen 5",
>>> @@ -1787,6 +1878,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxPXxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris Slim 15 Gen6 AMD",
>>> @@ -1794,6 +1886,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris Slim 15 Gen6 Intel/Commodore 
>>> ORION Slim 15 Gen6",
>>> @@ -1801,6 +1894,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM5IXxA"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 
>>> 16 Gen6",
>>> @@ -1808,6 +1902,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB1"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16 Gen6 Intel/Commodore ORION 
>>> 16 Gen6",
>>> @@ -1815,6 +1910,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM6IXxB_MB2"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 17 Gen6 Intel/Commodore ORION 
>>> 17 Gen6",
>>> @@ -1822,6 +1918,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "GM7IXxN"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16 Gen7 AMD",
>>> @@ -1829,6 +1926,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6FR5xxY"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16 Gen7 Intel",
>>> @@ -1836,6 +1934,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Stellaris 16 Gen7 Intel",
>>> @@ -1843,6 +1942,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "X6AR5xxY_mLED"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Pulse 14 Gen1 AMD",
>>> @@ -1850,6 +1950,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1401"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Pulse 15 Gen1 AMD",
>>> @@ -1857,6 +1958,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PULSE1501"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       {
>>>           .ident = "TUXEDO Pulse 15 Gen2 AMD",
>>> @@ -1864,6 +1966,7 @@ static const struct dmi_system_id 
>>> uniwill_dmi_table[] __initconst = {
>>>               DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
>>>               DMI_EXACT_MATCH(DMI_BOARD_NAME, "PF5LUXG"),
>>>           },
>>> +        .driver_data = &empty_descriptor,
>>>       },
>>>       { }
>>>   };
>>> @@ -1871,6 +1974,7 @@ MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
>>>     static int __init uniwill_init(void)
>>>   {
>>> +    const struct uniwill_device_descriptor *descriptor;
>>>       const struct dmi_system_id *id;
>>>       int ret;
>>>   @@ -1880,10 +1984,22 @@ static int __init uniwill_init(void)
>>>               return -ENODEV;
>>>             /* Assume that the device supports all features */
>>> -        supported_features = UINT_MAX;
>>> +        device_descriptor.features = UINT_MAX;
>>>           pr_warn("Loading on a potentially unsupported device\n");
>>>       } else {
>>> -        supported_features = (uintptr_t)id->driver_data;
>>> +        /*
>>> +         * Some devices might support additional features depending on
>>> +         * the BIOS version/date, so we call this callback to let them
>>> +         * modify their device descriptor accordingly.
>>> +         */
>>> +        if (id->callback) {
>>> +            ret = id->callback(id);
>>> +            if (ret < 0)
>>> +                return ret;
>>> +        }
>>> +
>>> +        descriptor = id->driver_data;
>>> +        device_descriptor = *descriptor;
>>>       }
>>>         ret = platform_driver_register(&uniwill_driver);