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/* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef COMMAND_DB_H
#define COMMAND_DB_H
enum cmd_db_hw_type {
CMD_DB_HW_MIN = 3,
CMD_DB_HW_ARC = CMD_DB_HW_MIN,
CMD_DB_HW_VRM = 4,
CMD_DB_HW_BCM = 5,
CMD_DB_HW_MAX = CMD_DB_HW_BCM,
CMD_DB_HW_ALL = 0xff,
};
#ifdef CONFIG_QCOM_COMMAND_DB
/**
* cmd_db_get_addr() - Query command db for resource id address.
*
* This is used to retrieve resource address based on resource
* id.
*
* @resource_id : resource id to query for address
*
* @return address on success or 0 on error otherwise
*/
u32 cmd_db_get_addr(const char *resource_id);
/**
* cmd_db_get_priority() - Query command db for resource address priority
* from command DB.
*
* This is used to retrieve a command DB entry based resource address.
*
* @addr : resource addr to query for priority.
* @drv_id : DRV ID to query resource for priority on.
* @type: HW type of ID being queried for faster lookups. Clients could
* pass in CMD_DB_HW_ALL if type field is unknown
*
* @return true if priority bit is set for the DRV ID/address
*/
bool cmd_db_get_priority(u32 addr, u8 drv_id);
/**
* cmd_db_get_aux_data() - Query command db for aux data. This is used to
* retrieve a command DB entry based resource address.
*
* @resource_id : Resource to retrieve AUX Data on.
* @data : Data buffer to copy returned aux data to. Returns size on NULL
* @len : Caller provides size of data buffer passed in.
*
* returns size of data on success, errno on error
*/
int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len);
/**
* cmd_db_get_aux_data_len - Get the length of the auxllary data stored in DB.
*
* @resource_id: Resource to retrieve AUX Data.
*
* returns size on success, errno on error
*/
int cmd_db_get_aux_data_len(const char *resource_id);
/**
* cmd_db_get_version - Get the version of the command DB data
*
* @resource_id: Resource id to query the DB for version
*
* returns version on success, 0 on error.
* Major number in MSB, minor number in LSB
*/
u16 cmd_db_get_version(const char *resource_id);
/**
* cmd_db_ready - Indicates if command DB is probed
*
* returns 0 on success , errno otherwise
*/
int cmd_db_ready(void);
/**
* cmd_db_get_slave_id - Get the slave ID for a given resource address
*
* @resource_id: Resource id to query the DB for version
*
* return cmd_db_hw_type enum on success, errno on error
*/
int cmd_db_get_slave_id(const char *resource_id);
/**
* cmd_db_is_standalone - Returns if the command DB is standalone
*
* return 1 if command DB is standalone, 0 if not, errno otherwise.
*/
int cmd_db_is_standalone(void);
#else
static inline u32 cmd_db_get_addr(const char *resource_id)
{
return 0;
}
bool cmd_db_get_priority(u32 addr, u8 drv_id)
{
return false;
}
int cmd_db_get_aux_data(const char *resource_id, u8 *data, int len)
{
return -ENODEV;
}
int cmd_db_get_aux_data_len(const char *resource_id)
{
return -ENODEV;
}
u16 cmd_db_get_version(const char *resource_id)
{
return 0;
}
int cmd_db_ready(void)
{
return -ENODEV;
}
int cmd_db_get_slave_id(const char *resource_id)
{
return -ENODEV;
}
int cmd_db_is_standalone(void)
{
return -ENODEV;
}
#endif
#endif
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