1/* 2 * OMAP3/4 Voltage Processor (VP) structure and macro definitions 3 * 4 * Copyright (C) 2007, 2010 Texas Instruments, Inc. 5 * Rajendra Nayak <rnayak@ti.com> 6 * Lesly A M <x0080970@ti.com> 7 * Thara Gopinath <thara@ti.com> 8 * 9 * Copyright (C) 2008, 2011 Nokia Corporation 10 * Kalle Jokiniemi 11 * Paul Walmsley 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License version 15 * 2 as published by the Free Software Foundation. 16 */ 17#ifndef __ARCH_ARM_MACH_OMAP2_VP_H 18#define __ARCH_ARM_MACH_OMAP2_VP_H 19 20#include <linux/kernel.h> 21 22struct voltagedomain; 23 24/* XXX document */ 25#define VP_IDLE_TIMEOUT 200 26#define VP_TRANXDONE_TIMEOUT 300 27 28/** 29 * struct omap_vp_ops - per-VP operations 30 * @check_txdone: check for VP transaction done 31 * @clear_txdone: clear VP transaction done status 32 */ 33struct omap_vp_ops { 34 u32 (*check_txdone)(u8 vp_id); 35 void (*clear_txdone)(u8 vp_id); 36}; 37 38/** 39 * struct omap_vp_common - register data common to all VDDs 40 * @vpconfig_erroroffset_mask: ERROROFFSET bitmask in the PRM_VP*_CONFIG reg 41 * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg 42 * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg 43 * @vpconfig_timeouten: TIMEOUT bitmask in the PRM_VP*_CONFIG reg 44 * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg 45 * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg 46 * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg 47 * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg 48 * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg 49 * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg 50 * @vstepmin_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg 51 * @vstepmin_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg 52 * @vstepmax_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg 53 * @vstepmax_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg 54 * @vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg 55 * @vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg 56 * @vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg 57 * @vpvoltage_mask: VPVOLTAGE field mask in PRM_VP*_VOLTAGE reg 58 */ 59struct omap_vp_common { 60 u32 vpconfig_erroroffset_mask; 61 u32 vpconfig_errorgain_mask; 62 u32 vpconfig_initvoltage_mask; 63 u8 vpconfig_timeouten; 64 u8 vpconfig_initvdd; 65 u8 vpconfig_forceupdate; 66 u8 vpconfig_vpenable; 67 u8 vstepmin_stepmin_shift; 68 u8 vstepmin_smpswaittimemin_shift; 69 u8 vstepmax_stepmax_shift; 70 u8 vstepmax_smpswaittimemax_shift; 71 u8 vlimitto_vddmin_shift; 72 u8 vlimitto_vddmax_shift; 73 u8 vlimitto_timeout_shift; 74 u8 vpvoltage_mask; 75 76 const struct omap_vp_ops *ops; 77}; 78 79/** 80 * struct omap_vp_instance - VP register offsets (per-VDD) 81 * @common: pointer to struct omap_vp_common * for this SoC 82 * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start 83 * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start 84 * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start 85 * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start 86 * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start 87 * @id: Unique identifier for VP instance. 88 * @enabled: flag to keep track of whether vp is enabled or not 89 * 90 * XXX vp_common is probably not needed since it is per-SoC 91 */ 92struct omap_vp_instance { 93 const struct omap_vp_common *common; 94 u8 vpconfig; 95 u8 vstepmin; 96 u8 vstepmax; 97 u8 vlimitto; 98 u8 vstatus; 99 u8 voltage; 100 u8 id; 101 bool enabled; 102}; 103 104extern struct omap_vp_instance omap3_vp_mpu; 105extern struct omap_vp_instance omap3_vp_core; 106 107extern struct omap_vp_instance omap4_vp_mpu; 108extern struct omap_vp_instance omap4_vp_iva; 109extern struct omap_vp_instance omap4_vp_core; 110 111extern struct omap_vp_param omap3_mpu_vp_data; 112extern struct omap_vp_param omap3_core_vp_data; 113 114extern struct omap_vp_param omap4_mpu_vp_data; 115extern struct omap_vp_param omap4_iva_vp_data; 116extern struct omap_vp_param omap4_core_vp_data; 117 118void omap_vp_init(struct voltagedomain *voltdm); 119void omap_vp_enable(struct voltagedomain *voltdm); 120void omap_vp_disable(struct voltagedomain *voltdm); 121int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, 122 unsigned long target_volt); 123int omap_vp_update_errorgain(struct voltagedomain *voltdm, 124 unsigned long target_volt); 125 126#endif 127