/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( c ) 2016 - 2019 , The Linux Foundation . All rights reserved .
*/
#ifndef __SOC_QCOM_TCS_H__
#define __SOC_QCOM_TCS_H__
#include <linux/bitfield.h>
#include <linux/bits.h>
#define MAX_RPMH_PAYLOAD 16
/**
* rpmh_state : state for the request
*
* RPMH_SLEEP_STATE : State of the resource when the processor subsystem
* is powered down . There is no client using the
* resource actively .
* RPMH_WAKE_ONLY_STATE : Resume resource state to the value previously
* requested before the processor was powered down .
* RPMH_ACTIVE_ONLY_STATE : Active or AMC mode requests . Resource state
* is aggregated immediately .
*/
enum rpmh_state {
RPMH_SLEEP_STATE,
RPMH_WAKE_ONLY_STATE,
RPMH_ACTIVE_ONLY_STATE,
};
/**
* struct tcs_cmd : an individual request to RPMH .
*
* @ addr : the address of the resource slv_id : 18 : 16 | offset : 0 : 15
* @ data : the resource state request
* @ wait : ensure that this command is complete before returning .
* Setting " wait " here only makes sense during rpmh_write_batch ( ) for
* active - only transfers , this is because :
* rpmh_write ( ) - Always waits .
* ( DEFINE_RPMH_MSG_ONSTACK will set . wait_for_compl )
* rpmh_write_async ( ) - Never waits .
* ( There ' s no request completion callback )
*/
struct tcs_cmd {
u32 addr;
u32 data;
u32 wait;
};
/**
* struct tcs_request : A set of tcs_cmds sent together in a TCS
*
* @ state : state for the request .
* @ wait_for_compl : wait until we get a response from the h / w accelerator
* ( same as setting cmd - > wait for all commands in the request )
* @ num_cmds : the number of @ cmds in this request
* @ cmds : an array of tcs_cmds
*/
struct tcs_request {
enum rpmh_state state;
u32 wait_for_compl;
u32 num_cmds;
struct tcs_cmd *cmds;
};
#define BCM_TCS_CMD_COMMIT_MASK BIT(30 )
#define BCM_TCS_CMD_VALID_MASK BIT(29 )
#define BCM_TCS_CMD_VOTE_MASK GENMASK(13 , 0 )
#define BCM_TCS_CMD_VOTE_Y_MASK GENMASK(13 , 0 )
#define BCM_TCS_CMD_VOTE_X_MASK GENMASK(27 , 14 )
/* Construct a Bus Clock Manager (BCM) specific TCS command */
#define BCM_TCS_CMD(commit, valid, vote_x, vote_y) \
(u32_encode_bits(commit, BCM_TCS_CMD_COMMIT_MASK) | \
u32_encode_bits(valid, BCM_TCS_CMD_VALID_MASK) | \
u32_encode_bits(vote_x, BCM_TCS_CMD_VOTE_X_MASK) | \
u32_encode_bits(vote_y, BCM_TCS_CMD_VOTE_Y_MASK))
#endif /* __SOC_QCOM_TCS_H__ */
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