+
+/* Feature bitmask since the associated registers are not reliable */
+static uintptr_t supported_features;
+
+/*
+ * "disable" is placed on index 0 so that the return value of
sysfs_match_string()
+ * directly translates into a boolean value.
+ */
+static const char * const uniwill_enable_disable_strings[] = {
+ [0] = "disable",
+ [1] = "enable",
+};
+
+static const char * const uniwill_temp_labels[] = {
+ "CPU",
+ "GPU",
+};
+
+static const char * const uniwill_fan_labels[] = {
+ "Main",
+ "Secondary",
+};
+
+static int uniwill_get_set_ulong(struct wmi_device *wdev, struct
uniwill_method_buffer *input,
+ u32 *output)
+{
+ struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer in = {
+ .length = sizeof(*input),
+ .pointer = input,
+ };
+ union acpi_object *obj;
+ acpi_status status;
+ int ret = 0;
+
+ status = wmidev_evaluate_method(wdev, 0x0,
UNIWILL_GET_SET_ULONG, &in, &out);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ obj = out.pointer;
+ if (!obj)
+ return -ENODATA;
+
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ ret = -ENOMSG;
+ goto free_obj;
+ }
+
+ if (obj->buffer.length < sizeof(*output)) {
+ ret = -EPROTO;
+ goto free_obj;
+ }
+
+ *output = get_unaligned_le32(obj->buffer.pointer);
+
+free_obj:
+ kfree(obj);
+
+ return ret;
+}
+
+static int uniwill_ec_reg_write(void *context, unsigned int reg,
unsigned int val)
+{
+ struct uniwill_method_buffer input = {
+ .address = cpu_to_le16(reg),
+ .data = cpu_to_le16(val & U8_MAX),
+ .operation = 0x0000,
+ };
+ struct uniwill_data *data = context;
+ u32 output;
+ int ret;
+
+ ret = uniwill_get_set_ulong(data->wdev, &input, &output);
+ if (ret < 0)
+ return ret;
+
+ if (output == 0xFEFEFEFE)
+ return -ENXIO;
+
+ return 0;
+}
+
+static int uniwill_ec_reg_read(void *context, unsigned int reg,
unsigned int *val)
+{
+ struct uniwill_method_buffer input = {
+ .address = cpu_to_le16(reg),
+ .data = 0x0000,
+ .operation = cpu_to_le16(0x0100),
+ };
+ struct uniwill_data *data = context;
+ u32 output;
+ int ret;
+
+ ret = uniwill_get_set_ulong(data->wdev, &input, &output);
+ if (ret < 0)
+ return ret;
+
+ if (output == 0xFEFEFEFE)
+ return -ENXIO;
+
+ *val = (u8)output;
+
+ return 0;
+}
+
+static const struct regmap_bus uniwill_ec_bus = {
+ .reg_write = uniwill_ec_reg_write,
+ .reg_read = uniwill_ec_reg_read,
+ .reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
+ .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
+};
+
+static bool uniwill_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case EC_ADDR_AP_OEM:
+ case EC_ADDR_LIGHTBAR_AC_CTRL:
+ case EC_ADDR_LIGHTBAR_AC_RED:
+ case EC_ADDR_LIGHTBAR_AC_GREEN:
+ case EC_ADDR_LIGHTBAR_AC_BLUE:
+ case EC_ADDR_BIOS_OEM:
+ case EC_ADDR_TRIGGER:
+ case EC_ADDR_OEM_4:
+ case EC_ADDR_CHARGE_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_RED:
+ case EC_ADDR_LIGHTBAR_BAT_GREEN:
+ case EC_ADDR_LIGHTBAR_BAT_BLUE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool uniwill_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case EC_ADDR_CPU_TEMP:
+ case EC_ADDR_GPU_TEMP:
+ case EC_ADDR_MAIN_FAN_RPM_1:
+ case EC_ADDR_MAIN_FAN_RPM_2:
+ case EC_ADDR_SECOND_FAN_RPM_1:
+ case EC_ADDR_SECOND_FAN_RPM_2:
+ case EC_ADDR_BAT_ALERT:
+ case EC_ADDR_PROJECT_ID:
+ case EC_ADDR_AP_OEM:
+ case EC_ADDR_LIGHTBAR_AC_CTRL:
+ case EC_ADDR_LIGHTBAR_AC_RED:
+ case EC_ADDR_LIGHTBAR_AC_GREEN:
+ case EC_ADDR_LIGHTBAR_AC_BLUE:
+ case EC_ADDR_BIOS_OEM:
+ case EC_ADDR_PWM_1:
+ case EC_ADDR_PWM_2:
+ case EC_ADDR_TRIGGER:
+ case EC_ADDR_SWITCH_STATUS:
+ case EC_ADDR_OEM_4:
+ case EC_ADDR_CHARGE_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_RED:
+ case EC_ADDR_LIGHTBAR_BAT_GREEN:
+ case EC_ADDR_LIGHTBAR_BAT_BLUE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool uniwill_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case EC_ADDR_CPU_TEMP:
+ case EC_ADDR_GPU_TEMP:
+ case EC_ADDR_MAIN_FAN_RPM_1:
+ case EC_ADDR_MAIN_FAN_RPM_2:
+ case EC_ADDR_SECOND_FAN_RPM_1:
+ case EC_ADDR_SECOND_FAN_RPM_2:
+ case EC_ADDR_BAT_ALERT:
+ case EC_ADDR_PWM_1:
+ case EC_ADDR_PWM_2:
+ case EC_ADDR_TRIGGER:
+ case EC_ADDR_SWITCH_STATUS:
+ case EC_ADDR_CHARGE_CTRL:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config uniwill_ec_config = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .writeable_reg = uniwill_writeable_reg,
+ .readable_reg = uniwill_readable_reg,
+ .volatile_reg = uniwill_volatile_reg,
+ .can_sleep = true,
+ .max_register = 0xFFFF,
+ .cache_type = REGCACHE_MAPLE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static ssize_t fn_lock_store(struct device *dev, struct
device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = FN_LOCK_STATUS;
+ else
+ value = 0;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_BIOS_OEM,
FN_LOCK_STATUS, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t fn_lock_show(struct device *dev, struct
device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_BIOS_OEM, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(value &
FN_LOCK_STATUS));
+}
+
+static DEVICE_ATTR_RW(fn_lock);
+
+static ssize_t super_key_lock_store(struct device *dev, struct
device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ guard(mutex)(&data->super_key_lock);
+
+ ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We can only toggle the super key lock, so we return early if
the setting
+ * is already in the correct state.
+ */
+ if (ret == !(value & SUPER_KEY_LOCK_STATUS))
+ return count;
+
+ ret = regmap_write_bits(data->regmap, EC_ADDR_TRIGGER,
TRIGGER_SUPER_KEY_LOCK,
+ TRIGGER_SUPER_KEY_LOCK);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t super_key_lock_show(struct device *dev, struct
device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(!(value &
SUPER_KEY_LOCK_STATUS)));
+}
+
+static DEVICE_ATTR_RW(super_key_lock);
+
+static ssize_t touchpad_toggle_store(struct device *dev, struct
device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = 0;
+ else
+ value = TOUCHPAD_TOGGLE_OFF;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_OEM_4,
TOUCHPAD_TOGGLE_OFF, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t touchpad_toggle_show(struct device *dev, struct
device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_OEM_4, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(!(value &
TOUCHPAD_TOGGLE_OFF)));
+}
+
+static DEVICE_ATTR_RW(touchpad_toggle);
+
+static ssize_t rainbow_animation_store(struct device *dev, struct
device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = LIGHTBAR_WELCOME;
+ else
+ value = 0;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL,
LIGHTBAR_WELCOME, value);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_update_bits(data->regmap,
EC_ADDR_LIGHTBAR_BAT_CTRL, LIGHTBAR_WELCOME, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t rainbow_animation_show(struct device *dev, struct
device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(value &
LIGHTBAR_WELCOME));
+}
+
+static DEVICE_ATTR_RW(rainbow_animation);
+
+static ssize_t breathing_in_suspend_store(struct device *dev, struct
device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = 0;
+ else
+ value = LIGHTBAR_S3_OFF;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL,
LIGHTBAR_S3_OFF, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t breathing_in_suspend_show(struct device *dev, struct
device_attribute *attr,
+ char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(!(value &
LIGHTBAR_S3_OFF)));
+}
+
+static DEVICE_ATTR_RW(breathing_in_suspend);
+
+static struct attribute *uniwill_attrs[] = {
+ /* Keyboard-related */
+ &dev_attr_fn_lock.attr,
+ &dev_attr_super_key_lock.attr,
+ &dev_attr_touchpad_toggle.attr,
+ /* Lightbar-related */
+ &dev_attr_rainbow_animation.attr,
+ &dev_attr_breathing_in_suspend.attr,
+ NULL
+};
+
+static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct
attribute *attr, int n)
+{
+ if (attr == &dev_attr_fn_lock.attr) {
+ if (supported_features & UNIWILL_FEATURE_FN_LOCK)
+ return attr->mode;
+ }
+
+ if (attr == &dev_attr_super_key_lock.attr) {
+ if (supported_features & UNIWILL_FEATURE_SUPER_KEY_LOCK)
+ return attr->mode;
+ }
+
+ if (attr == &dev_attr_touchpad_toggle.attr) {
+ if (supported_features & 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)
+ return attr->mode;
+ }
+
+ return 0;
+}
+
+static const struct attribute_group uniwill_group = {
+ .is_visible = uniwill_attr_is_visible,
+ .attrs = uniwill_attrs,
+};
+
+static const struct attribute_group *uniwill_groups[] = {
+ &uniwill_group,
+ NULL
+};
+
+static int uniwill_read(struct device *dev, enum hwmon_sensor_types
type, u32 attr, int channel,
+ long *val)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ __be16 rpm;
+ int ret;
+
+ switch (type) {
+ case hwmon_temp:
+ switch (channel) {
+ case 0:
+ ret = regmap_read(data->regmap, EC_ADDR_CPU_TEMP, &value);
+ break;
+ case 1:
+ ret = regmap_read(data->regmap, EC_ADDR_GPU_TEMP, &value);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ *val = value * 1000;
+ return 0;
+ case hwmon_fan:
+ switch (channel) {
+ case 0:
+ ret = regmap_bulk_read(data->regmap,
EC_ADDR_MAIN_FAN_RPM_1, &rpm,
+ sizeof(rpm));
+ break;
+ case 1:
+ ret = regmap_bulk_read(data->regmap,
EC_ADDR_SECOND_FAN_RPM_1, &rpm,
+ sizeof(rpm));
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ *val = be16_to_cpu(rpm);
+ return 0;
+ case hwmon_pwm:
+ switch (channel) {
+ case 0:
+ ret = regmap_read(data->regmap, EC_ADDR_PWM_1, &value);
+ break;
+ case 1:
+ ret = regmap_read(data->regmap, EC_ADDR_PWM_2, &value);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ *val = fixp_linear_interpolate(0, 0, PWM_MAX, U8_MAX, value);
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int uniwill_read_string(struct device *dev, enum
hwmon_sensor_types type, u32 attr,
+ int channel, const char **str)
+{
+ switch (type) {
+ case hwmon_temp:
+ *str = uniwill_temp_labels[channel];
+ return 0;
+ case hwmon_fan:
+ *str = uniwill_fan_labels[channel];
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static const struct hwmon_ops uniwill_ops = {
+ .visible = 0444,
+ .read = uniwill_read,
+ .read_string = uniwill_read_string,
+};
+
+static const struct hwmon_channel_info * const uniwill_info[] = {
+ HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ),
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_LABEL,
+ HWMON_T_INPUT | HWMON_T_LABEL),
+ HWMON_CHANNEL_INFO(fan,
+ HWMON_F_INPUT | HWMON_F_LABEL,
+ HWMON_F_INPUT | HWMON_F_LABEL),
+ HWMON_CHANNEL_INFO(pwm,
+ HWMON_PWM_INPUT,
+ HWMON_PWM_INPUT),
+ NULL
+};
+
+static const struct hwmon_chip_info uniwill_chip_info = {
+ .ops = &uniwill_ops,
+ .info = uniwill_info,
+};
+
+static int uniwill_hwmon_init(struct uniwill_data *data)
+{
+ struct device *hdev;
+
+ if (!(supported_features & UNIWILL_FEATURE_HWMON))
+ return 0;
+
+ hdev = devm_hwmon_device_register_with_info(&data->wdev->dev,
"uniwill", data,
+ &uniwill_chip_info, NULL);
+
+ return PTR_ERR_OR_ZERO(hdev);
+}
+
+static const unsigned int
uniwill_led_channel_to_bat_reg[LED_CHANNELS] = {
+ EC_ADDR_LIGHTBAR_BAT_RED,
+ EC_ADDR_LIGHTBAR_BAT_GREEN,
+ EC_ADDR_LIGHTBAR_BAT_BLUE,
+};
+
+static const unsigned int
uniwill_led_channel_to_ac_reg[LED_CHANNELS] = {
+ EC_ADDR_LIGHTBAR_AC_RED,
+ EC_ADDR_LIGHTBAR_AC_GREEN,
+ EC_ADDR_LIGHTBAR_AC_BLUE,
+};
+
+static int uniwill_led_brightness_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
+{
+ struct led_classdev_mc *led_mc_cdev = lcdev_to_mccdev(led_cdev);
+ struct uniwill_data *data = container_of(led_mc_cdev, struct
uniwill_data, led_mc_cdev);
+ unsigned int value;
+ int ret;
+
+ ret = led_mc_calc_color_components(led_mc_cdev, brightness);
+ if (ret < 0)
+ return ret;
+
+ for (int i = 0; i < LED_CHANNELS; i++) {
+ /* Prevent the brightness values from overflowing */
+ value = min(LED_MAX_BRIGHTNESS,
data->led_mc_subled_info[i].brightness);
+ ret = regmap_write(data->regmap,
uniwill_led_channel_to_ac_reg[i], value);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_write(data->regmap,
uniwill_led_channel_to_bat_reg[i], value);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (brightness)
+ value = 0;
+ else
+ value = LIGHTBAR_S0_OFF;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL,
LIGHTBAR_S0_OFF, value);
+ if (ret < 0)
+ return ret;
+
+ return regmap_update_bits(data->regmap,
EC_ADDR_LIGHTBAR_BAT_CTRL, LIGHTBAR_S0_OFF, value);
+}
+
+#define LIGHTBAR_MASK (LIGHTBAR_APP_EXISTS | LIGHTBAR_S0_OFF |
LIGHTBAR_S3_OFF | LIGHTBAR_WELCOME)
+
+static int uniwill_led_init(struct uniwill_data *data)
+{
+ struct led_init_data init_data = {
+ .devicename = DRIVER_NAME,
+ .default_label = "multicolor:" LED_FUNCTION_STATUS,
+ .devname_mandatory = true,
+ };
+ unsigned int color_indices[3] = {
+ LED_COLOR_ID_RED,
+ LED_COLOR_ID_GREEN,
+ LED_COLOR_ID_BLUE,
+ };
+ unsigned int value;
+ int ret;
+
+ if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
+ return 0;
+
+ /*
+ * The EC has separate lightbar settings for AC and battery mode,
+ * so we have to ensure that both settings are the same.
+ */
+ ret = regmap_read(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, &value);
+ if (ret < 0)
+ return ret;
+
+ value |= LIGHTBAR_APP_EXISTS;
+ ret = regmap_write(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, value);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The breathing animation during suspend is not supported when
+ * running on battery power.
+ */
+ value |= LIGHTBAR_S3_OFF;
+ ret = regmap_update_bits(data->regmap,
EC_ADDR_LIGHTBAR_BAT_CTRL, LIGHTBAR_MASK, value);
+ if (ret < 0)
+ return ret;
+
+ data->led_mc_cdev.led_cdev.color = LED_COLOR_ID_MULTI;
+ data->led_mc_cdev.led_cdev.max_brightness = LED_MAX_BRIGHTNESS;
+ data->led_mc_cdev.led_cdev.flags = LED_REJECT_NAME_CONFLICT;
+ data->led_mc_cdev.led_cdev.brightness_set_blocking =
uniwill_led_brightness_set;
+
+ if (value & LIGHTBAR_S0_OFF)
+ data->led_mc_cdev.led_cdev.brightness = 0;
+ else
+ data->led_mc_cdev.led_cdev.brightness = LED_MAX_BRIGHTNESS;
+
+ for (int i = 0; i < LED_CHANNELS; i++) {
+ data->led_mc_subled_info[i].color_index = color_indices[i];
+
+ ret = regmap_read(data->regmap,
uniwill_led_channel_to_ac_reg[i], &value);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Make sure that the initial intensity value is not greater
than
+ * the maximum brightness.
+ */
+ value = min(LED_MAX_BRIGHTNESS, value);
+ ret = regmap_write(data->regmap,
uniwill_led_channel_to_ac_reg[i], value);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_write(data->regmap,
uniwill_led_channel_to_bat_reg[i], value);
+ if (ret < 0)
+ return ret;
+
+ data->led_mc_subled_info[i].intensity = value;
+ data->led_mc_subled_info[i].channel = i;
+ }
+
+ data->led_mc_cdev.subled_info = data->led_mc_subled_info;
+ data->led_mc_cdev.num_colors = LED_CHANNELS;
+
+ return
devm_led_classdev_multicolor_register_ext(&data->wdev->dev,
&data->led_mc_cdev,
+ &init_data);
+}
+
+static int uniwill_get_property(struct power_supply *psy, const
struct power_supply_ext *ext,
+ void *drvdata, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct uniwill_data *data = drvdata;
+ union power_supply_propval prop;
+ unsigned int regval;
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_PRESENT, &prop);
+ if (ret < 0)
+ return ret;
+
+ if (!prop.intval) {
+ val->intval = POWER_SUPPLY_HEALTH_NO_BATTERY;
+ return 0;
+ }
+
+ ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_STATUS, &prop);
+ if (ret < 0)
+ return ret;
+
+ if (prop.intval == POWER_SUPPLY_STATUS_UNKNOWN) {
+ val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+ return 0;
+ }
+
+ ret = regmap_read(data->regmap, EC_ADDR_BAT_ALERT, ®val);
+ if (ret < 0)
+ return ret;
+
+ if (regval) {
+ /* Charging issue */
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ return 0;
+ }
+
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ return 0;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ ret = regmap_read(data->regmap, EC_ADDR_CHARGE_CTRL, ®val);
+ if (ret < 0)
+ return ret;
+
+ val->intval = clamp_val(FIELD_GET(CHARGE_CTRL_MASK, regval),
0, 100);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int uniwill_set_property(struct power_supply *psy, const
struct power_supply_ext *ext,
+ void *drvdata, enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct uniwill_data *data = drvdata;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ if (val->intval < 1 || val->intval > 100)
+ return -EINVAL;
+
+ return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL,
CHARGE_CTRL_MASK,
+ val->intval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int uniwill_property_is_writeable(struct power_supply *psy,
+ const struct power_supply_ext *ext, void *drvdata,
+ enum power_supply_property psp)
+{
+ if (psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD)
+ return true;
+
+ return false;
+}
+
+static const enum power_supply_property uniwill_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
+};
+
+static const struct power_supply_ext uniwill_extension = {
+ .name = DRIVER_NAME,
+ .properties = uniwill_properties,
+ .num_properties = ARRAY_SIZE(uniwill_properties),
+ .get_property = uniwill_get_property,
+ .set_property = uniwill_set_property,
+ .property_is_writeable = uniwill_property_is_writeable,
+};
+
+static int uniwill_add_battery(struct power_supply *battery, struct
acpi_battery_hook *hook)
+{
+ struct uniwill_data *data = container_of(hook, struct
uniwill_data, hook);
+ struct uniwill_battery_entry *entry;
+ int ret;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ ret = power_supply_register_extension(battery,
&uniwill_extension, &data->wdev->dev, data);
+ if (ret < 0) {
+ kfree(entry);
+ return ret;
+ }
+
+ scoped_guard(mutex, &data->battery_lock) {
+ entry->battery = battery;
+ list_add(&entry->head, &data->batteries);
+ }
+
+ return 0;
+}
+
+static int uniwill_remove_battery(struct power_supply *battery,
struct acpi_battery_hook *hook)
+{
+ struct uniwill_data *data = container_of(hook, struct
uniwill_data, hook);
+ struct uniwill_battery_entry *entry, *tmp;
+
+ scoped_guard(mutex, &data->battery_lock) {
+ list_for_each_entry_safe(entry, tmp, &data->batteries, head) {
+ if (entry->battery == battery) {
+ list_del(&entry->head);
+ kfree(entry);
+ break;
+ }
+ }
+ }
+
+ power_supply_unregister_extension(battery, &uniwill_extension);
+
+ return 0;
+}
+
+static int uniwill_battery_init(struct uniwill_data *data)
+{
+ int ret;
+
+ if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+ return 0;
+
+ ret = devm_mutex_init(&data->wdev->dev, &data->battery_lock);
+ if (ret < 0)
+ return ret;
+
+ INIT_LIST_HEAD(&data->batteries);
+ data->hook.name = "Uniwill Battery Extension";
+ data->hook.add_battery = uniwill_add_battery;
+ data->hook.remove_battery = uniwill_remove_battery;
+
+ return devm_battery_hook_register(&data->wdev->dev, &data->hook);
+}
+
+static int uniwill_notifier_call(struct notifier_block *nb, unsigned
long action, void *dummy)
+{
+ struct uniwill_data *data = container_of(nb, struct
uniwill_data, nb);
+ struct uniwill_battery_entry *entry;
+
+ switch (action) {
+ case UNIWILL_OSD_BATTERY_ALERT:
+ scoped_guard(mutex, &data->battery_lock) {
+ list_for_each_entry(entry, &data->batteries, head) {
+ power_supply_changed(entry->battery);
+ }
+ }
+
+ return NOTIFY_OK;
+ default:
+ return NOTIFY_DONE;
+ }
+}
+
+static int uniwill_notifier_init(struct uniwill_data *data)
+{
+ data->nb.notifier_call = uniwill_notifier_call;
+
+ return devm_uniwill_wmi_register_notifier(&data->wdev->dev,
&data->nb);
+}
+
+static void uniwill_disable_manual_control(void *context)
+{
+ struct uniwill_data *data = context;
+
+ regmap_clear_bits(data->regmap, EC_ADDR_AP_OEM,
ENABLE_MANUAL_CTRL);
+}
+
+static int uniwill_ec_init(struct uniwill_data *data)
+{
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_PROJECT_ID, &value);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(&data->wdev->dev, "Project ID: %u\n", value);
+
+ ret = regmap_set_bits(data->regmap, EC_ADDR_AP_OEM,
ENABLE_MANUAL_CTRL);
+ if (ret < 0)
+ return ret;
+
+ return devm_add_action_or_reset(&data->wdev->dev,
uniwill_disable_manual_control, data);
+}
+
+static int uniwill_probe(struct wmi_device *wdev, const void *context)
+{
+ struct uniwill_data *data;
+ struct regmap *regmap;
+ int ret;
+
+ data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->wdev = wdev;
+ dev_set_drvdata(&wdev->dev, data);
+
+ regmap = devm_regmap_init(&wdev->dev, &uniwill_ec_bus, data,
&uniwill_ec_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ data->regmap = regmap;
+ ret = devm_mutex_init(&wdev->dev, &data->super_key_lock);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_ec_init(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_battery_init(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_led_init(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_hwmon_init(data);
+ if (ret < 0)
+ return ret;
+
+ return uniwill_notifier_init(data);
+}
+
+static void uniwill_shutdown(struct wmi_device *wdev)
+{
+ struct uniwill_data *data = dev_get_drvdata(&wdev->dev);
+
+ regmap_clear_bits(data->regmap, EC_ADDR_AP_OEM,
ENABLE_MANUAL_CTRL);
+}
+
+static int uniwill_suspend_keyboard(struct uniwill_data *data)
+{
+ if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_LOCK))
+ return 0;
+
+ /*
+ * The EC_ADDR_SWITCH_STATUS is maked as volatile, so we have to
restore it
+ * ourself.
+ */
+ return regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS,
&data->last_switch_status);
+}
+
+static int uniwill_suspend_battery(struct uniwill_data *data)
+{
+ if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+ return 0;
+
+ /*
+ * Save the current charge limit in order to restore it during
resume.
+ * We cannot use the regmap code for that since this register
needs to
+ * be declared as volatile due to CHARGE_CTRL_REACHED.
+ */
+ return regmap_read(data->regmap, EC_ADDR_CHARGE_CTRL,
&data->last_charge_ctrl);
+}
+
+static int uniwill_suspend(struct device *dev)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ ret = uniwill_suspend_keyboard(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_suspend_battery(data);
+ if (ret < 0)
+ return ret;
+
+ regcache_cache_only(data->regmap, true);
+ regcache_mark_dirty(data->regmap);
+
+ return 0;
+}
+
+static int uniwill_resume_keyboard(struct uniwill_data *data)
+{
+ unsigned int value;
+ int ret;
+
+ if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_LOCK))
+ return 0;
+
+ ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
+ if (ret < 0)
+ return ret;
+
+ if ((data->last_switch_status & SUPER_KEY_LOCK_STATUS) == (value
& SUPER_KEY_LOCK_STATUS))
+ return 0;
+
+ return regmap_write_bits(data->regmap, EC_ADDR_TRIGGER,
TRIGGER_SUPER_KEY_LOCK,
+ TRIGGER_SUPER_KEY_LOCK);
+}
+
+static int uniwill_resume_battery(struct uniwill_data *data)
+{
+ if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+ return 0;
+
+ return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL,
CHARGE_CTRL_MASK,
+ data->last_charge_ctrl);
+}
+
+static int uniwill_resume(struct device *dev)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ regcache_cache_only(data->regmap, false);
+
+ ret = regcache_sync(data->regmap);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_resume_keyboard(data);
+ if (ret < 0)
+ return ret;
+
+ return uniwill_resume_battery(data);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(uniwill_pm_ops, uniwill_suspend,
uniwill_resume);
+
+/*
+ * We cannot fully trust this GUID since Uniwill just copied the WMI
GUID
+ * from the Windows driver example, and others probably did the same.
+ *
+ * Because of this we cannot use this WMI GUID for autoloading.
+ */
+static const struct wmi_device_id uniwill_id_table[] = {
+ { UNIWILL_GUID, NULL },
+ { }
+};
+
+static struct wmi_driver uniwill_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .dev_groups = uniwill_groups,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ .pm = pm_sleep_ptr(&uniwill_pm_ops),
+ },
+ .id_table = uniwill_id_table,
+ .probe = uniwill_probe,
+ .shutdown = uniwill_shutdown,
+ .no_singleton = true,
+};
+
+static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
+ {
+ .ident = "Intel NUC x15",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPAC71H"),
+ },
+ .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK |
+ UNIWILL_FEATURE_SUPER_KEY_LOCK |
+ UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
+ UNIWILL_FEATURE_BATTERY |
+ UNIWILL_FEATURE_HWMON),
+ },
+ {
+ .ident = "Intel NUC x15",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPKC71F"),
+ },
+ .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK |
+ UNIWILL_FEATURE_SUPER_KEY_LOCK |
+ UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
+ UNIWILL_FEATURE_LIGHTBAR |
+ UNIWILL_FEATURE_BATTERY |
+ UNIWILL_FEATURE_HWMON),
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
+
+static int __init uniwill_init(void)
+{
+ const struct dmi_system_id *id;
+
+ id = dmi_first_match(uniwill_dmi_table);
+ if (!id) {
+ if (!force)
+ return -ENODEV;
+
+ /* Assume that the device supports all features */
+ supported_features = UINTPTR_MAX;
+ pr_warn("Loading on a potentially unsupported device\n");
+ } else {
+ supported_features = (uintptr_t)id->driver_data;
+ }
+
+ return wmi_driver_register(&uniwill_driver);
+}
+module_init(uniwill_init);
+
+static void __exit uniwill_exit(void)
+{
+ wmi_driver_unregister(&uniwill_driver);
+}
+module_exit(uniwill_exit);
+
+MODULE_AUTHOR("Armin Wolf <W_Armin@xxxxxx>");
+MODULE_DESCRIPTION("Uniwill notebook driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("UNIWILL");
diff --git a/drivers/platform/x86/uniwill/uniwill-wmi.c
b/drivers/platform/x86/uniwill/uniwill-wmi.c
index b95a0d68ce6a..759bad155099 100644
--- a/drivers/platform/x86/uniwill/uniwill-wmi.c
+++ b/drivers/platform/x86/uniwill/uniwill-wmi.c
@@ -153,7 +153,8 @@ static int uniwill_wmi_probe(struct wmi_device
*wdev, const void *context)
* We cannot fully trust this GUID since Uniwill just copied the
WMI GUID
* from the Windows driver example, and others probably did the same.
*
- * Because of this we cannot use this WMI GUID for autoloading.
+ * Because of this we cannot use this WMI GUID for autoloading. The
uniwill-laptop
+ * driver will instead load this module as a dependency.
*/
static const struct wmi_device_id uniwill_wmi_id_table[] = {
{ UNIWILL_EVENT_GUID, NULL },
