124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* OMAP3/4 Voltage Processor (VP) structure and macro definitions
|
|
*
|
|
* Copyright (C) 2007, 2010 Texas Instruments, Inc.
|
|
* Rajendra Nayak <rnayak@ti.com>
|
|
* Lesly A M <x0080970@ti.com>
|
|
* Thara Gopinath <thara@ti.com>
|
|
*
|
|
* Copyright (C) 2008, 2011 Nokia Corporation
|
|
* Kalle Jokiniemi
|
|
* Paul Walmsley
|
|
*/
|
|
#ifndef __ARCH_ARM_MACH_OMAP2_VP_H
|
|
#define __ARCH_ARM_MACH_OMAP2_VP_H
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
struct voltagedomain;
|
|
|
|
/* XXX document */
|
|
#define VP_IDLE_TIMEOUT 200
|
|
#define VP_TRANXDONE_TIMEOUT 300
|
|
|
|
/**
|
|
* struct omap_vp_ops - per-VP operations
|
|
* @check_txdone: check for VP transaction done
|
|
* @clear_txdone: clear VP transaction done status
|
|
*/
|
|
struct omap_vp_ops {
|
|
u32 (*check_txdone)(u8 vp_id);
|
|
void (*clear_txdone)(u8 vp_id);
|
|
};
|
|
|
|
/**
|
|
* struct omap_vp_common - register data common to all VDDs
|
|
* @vpconfig_erroroffset_mask: ERROROFFSET bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_timeouten: TIMEOUT bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg
|
|
* @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg
|
|
* @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg
|
|
* @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg
|
|
* @vstepmin_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg
|
|
* @vstepmin_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg
|
|
* @vstepmax_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg
|
|
* @vstepmax_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg
|
|
* @vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg
|
|
* @vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg
|
|
* @vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg
|
|
* @vpvoltage_mask: VPVOLTAGE field mask in PRM_VP*_VOLTAGE reg
|
|
*/
|
|
struct omap_vp_common {
|
|
u32 vpconfig_erroroffset_mask;
|
|
u32 vpconfig_errorgain_mask;
|
|
u32 vpconfig_initvoltage_mask;
|
|
u8 vpconfig_timeouten;
|
|
u8 vpconfig_initvdd;
|
|
u8 vpconfig_forceupdate;
|
|
u8 vpconfig_vpenable;
|
|
u8 vstepmin_stepmin_shift;
|
|
u8 vstepmin_smpswaittimemin_shift;
|
|
u8 vstepmax_stepmax_shift;
|
|
u8 vstepmax_smpswaittimemax_shift;
|
|
u8 vlimitto_vddmin_shift;
|
|
u8 vlimitto_vddmax_shift;
|
|
u8 vlimitto_timeout_shift;
|
|
u8 vpvoltage_mask;
|
|
|
|
const struct omap_vp_ops *ops;
|
|
};
|
|
|
|
/**
|
|
* struct omap_vp_instance - VP register offsets (per-VDD)
|
|
* @common: pointer to struct omap_vp_common * for this SoC
|
|
* @vpconfig: PRM_VP*_CONFIG reg offset from PRM start
|
|
* @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start
|
|
* @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start
|
|
* @vstatus: PRM_VP*_VSTATUS reg offset from PRM start
|
|
* @voltage: PRM_VP*_VOLTAGE reg offset from PRM start
|
|
* @id: Unique identifier for VP instance.
|
|
* @enabled: flag to keep track of whether vp is enabled or not
|
|
*
|
|
* XXX vp_common is probably not needed since it is per-SoC
|
|
*/
|
|
struct omap_vp_instance {
|
|
const struct omap_vp_common *common;
|
|
u8 vpconfig;
|
|
u8 vstepmin;
|
|
u8 vstepmax;
|
|
u8 vlimitto;
|
|
u8 vstatus;
|
|
u8 voltage;
|
|
u8 id;
|
|
bool enabled;
|
|
};
|
|
|
|
extern struct omap_vp_instance omap3_vp_mpu;
|
|
extern struct omap_vp_instance omap3_vp_core;
|
|
|
|
extern struct omap_vp_instance omap4_vp_mpu;
|
|
extern struct omap_vp_instance omap4_vp_iva;
|
|
extern struct omap_vp_instance omap4_vp_core;
|
|
|
|
extern struct omap_vp_param omap3_mpu_vp_data;
|
|
extern struct omap_vp_param omap3_core_vp_data;
|
|
|
|
extern struct omap_vp_param omap4_mpu_vp_data;
|
|
extern struct omap_vp_param omap4_iva_vp_data;
|
|
extern struct omap_vp_param omap4_core_vp_data;
|
|
|
|
void omap_vp_init(struct voltagedomain *voltdm);
|
|
void omap_vp_enable(struct voltagedomain *voltdm);
|
|
void omap_vp_disable(struct voltagedomain *voltdm);
|
|
int omap_vp_forceupdate_scale(struct voltagedomain *voltdm,
|
|
unsigned long target_volt);
|
|
int omap_vp_update_errorgain(struct voltagedomain *voltdm,
|
|
unsigned long target_volt);
|
|
|
|
#endif
|