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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Copyright (C) 2025 Derek J. Clark <derekjohn.clark@gmail.com> */
#ifndef _LENOVO_WMI_CAPDATA_H_
#define _LENOVO_WMI_CAPDATA_H_
#include <linux/bits.h>
#include <linux/bitfield.h>
#include <linux/types.h>
#define LWMI_SUPP_VALID BIT(0)
#define LWMI_SUPP_GET BIT(1)
#define LWMI_SUPP_SET BIT(2)
#define LWMI_ATTR_DEV_ID_MASK GENMASK(31, 24)
#define LWMI_ATTR_FEAT_ID_MASK GENMASK(23, 16)
#define LWMI_ATTR_MODE_ID_MASK GENMASK(15, 8)
#define LWMI_ATTR_TYPE_ID_MASK GENMASK(7, 0)
#define LWMI_DEVICE_ID_FAN 0x04
#define LWMI_TYPE_ID_NONE 0x00
struct component_match;
struct device;
struct cd_list;
struct capdata00 {
u32 id;
u32 supported;
u32 default_value;
};
struct capdata01 {
u32 id;
u32 supported;
u32 default_value;
u32 step;
u32 min_value;
u32 max_value;
};
struct capdata_fan {
u32 id;
u32 min_rpm;
u32 max_rpm;
};
typedef void (*cd_list_cb_t)(struct device *master_dev, struct cd_list *cd_list);
struct lwmi_cd_binder {
struct cd_list *cd00_list;
struct cd_list *cd01_list;
/*
* May be called during or after the bind callback.
* Will be called with NULL if capdata_fan does not exist.
* The pointer is only valid in the callback; never keep it for later use!
*/
cd_list_cb_t cd_fan_list_cb;
};
/**
* lwmi_attr_id() - Formats a capability data attribute ID
* @dev_id: The u8 corresponding to the device ID.
* @feat_id: The u8 corresponding to the feature ID on the device.
* @mode_id: The u8 corresponding to the wmi-gamezone mode for set/get.
* @type_id: The u8 corresponding to the sub-device.
*
* Return: encoded capability data attribute ID.
*/
static inline u32 lwmi_attr_id(u8 dev_id, u8 feat_id, u8 mode_id, u8 type_id)
{
return (FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, dev_id) |
FIELD_PREP(LWMI_ATTR_FEAT_ID_MASK, feat_id) |
FIELD_PREP(LWMI_ATTR_MODE_ID_MASK, mode_id) |
FIELD_PREP(LWMI_ATTR_TYPE_ID_MASK, type_id));
}
void lwmi_cd_match_add_all(struct device *master, struct component_match **matchptr);
int lwmi_cd00_get_data(struct cd_list *list, u32 attribute_id, struct capdata00 *output);
int lwmi_cd01_get_data(struct cd_list *list, u32 attribute_id, struct capdata01 *output);
int lwmi_cd_fan_get_data(struct cd_list *list, u32 attribute_id, struct capdata_fan *output);
#endif /* !_LENOVO_WMI_CAPDATA_H_ */
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