1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * OMAP3/4 Voltage Processor (VP) structure and macro definitions 4 * 5 * Copyright (C) 2007, 2010 Texas Instruments, Inc. 6 * Rajendra Nayak <rnayak@ti.com> 7 * Lesly A M <x0080970@ti.com> 8 * Thara Gopinath <thara@ti.com> 9 * 10 * Copyright (C) 2008, 2011 Nokia Corporation 11 * Kalle Jokiniemi 12 * Paul Walmsley 13 */ 14 #ifndef __ARCH_ARM_MACH_OMAP2_VP_H 15 #define __ARCH_ARM_MACH_OMAP2_VP_H 16 17 #include <linux/kernel.h> 18 19 struct voltagedomain; 20 21 /* XXX document */ 22 #define VP_IDLE_TIMEOUT 200 23 #define VP_TRANXDONE_TIMEOUT 300 24 25 /** 26 * struct omap_vp_ops - per-VP operations 27 * @check_txdone: check for VP transaction done 28 * @clear_txdone: clear VP transaction done status 29 */ 30 struct omap_vp_ops { 31 u32 (*check_txdone)(u8 vp_id); 32 void (*clear_txdone)(u8 vp_id); 33 }; 34 35 /** 36 * struct omap_vp_common - register data common to all VDDs 37 * @vpconfig_erroroffset_mask: ERROROFFSET bitmask in the PRM_VP*_CONFIG reg 38 * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg 39 * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg 40 * @vpconfig_timeouten: TIMEOUT bitmask in the PRM_VP*_CONFIG reg 41 * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg 42 * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg 43 * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg 44 * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg 45 * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg 46 * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg 47 * @vstepmin_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg 48 * @vstepmin_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg 49 * @vstepmax_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg 50 * @vstepmax_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg 51 * @vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg 52 * @vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg 53 * @vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg 54 * @vpvoltage_mask: VPVOLTAGE field mask in PRM_VP*_VOLTAGE reg 55 */ 56 struct omap_vp_common { 57 u32 vpconfig_erroroffset_mask; 58 u32 vpconfig_errorgain_mask; 59 u32 vpconfig_initvoltage_mask; 60 u8 vpconfig_timeouten; 61 u8 vpconfig_initvdd; 62 u8 vpconfig_forceupdate; 63 u8 vpconfig_vpenable; 64 u8 vstepmin_stepmin_shift; 65 u8 vstepmin_smpswaittimemin_shift; 66 u8 vstepmax_stepmax_shift; 67 u8 vstepmax_smpswaittimemax_shift; 68 u8 vlimitto_vddmin_shift; 69 u8 vlimitto_vddmax_shift; 70 u8 vlimitto_timeout_shift; 71 u8 vpvoltage_mask; 72 73 const struct omap_vp_ops *ops; 74 }; 75 76 /** 77 * struct omap_vp_instance - VP register offsets (per-VDD) 78 * @common: pointer to struct omap_vp_common * for this SoC 79 * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start 80 * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start 81 * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start 82 * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start 83 * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start 84 * @id: Unique identifier for VP instance. 85 * @enabled: flag to keep track of whether vp is enabled or not 86 * 87 * XXX vp_common is probably not needed since it is per-SoC 88 */ 89 struct omap_vp_instance { 90 const struct omap_vp_common *common; 91 u8 vpconfig; 92 u8 vstepmin; 93 u8 vstepmax; 94 u8 vlimitto; 95 u8 vstatus; 96 u8 voltage; 97 u8 id; 98 bool enabled; 99 }; 100 101 extern struct omap_vp_instance omap3_vp_mpu; 102 extern struct omap_vp_instance omap3_vp_core; 103 104 extern struct omap_vp_instance omap4_vp_mpu; 105 extern struct omap_vp_instance omap4_vp_iva; 106 extern struct omap_vp_instance omap4_vp_core; 107 108 extern struct omap_vp_param omap3_mpu_vp_data; 109 extern struct omap_vp_param omap3_core_vp_data; 110 111 extern struct omap_vp_param omap4_mpu_vp_data; 112 extern struct omap_vp_param omap4_iva_vp_data; 113 extern struct omap_vp_param omap4_core_vp_data; 114 115 void omap_vp_init(struct voltagedomain *voltdm); 116 void omap_vp_enable(struct voltagedomain *voltdm); 117 void omap_vp_disable(struct voltagedomain *voltdm); 118 int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, 119 unsigned long target_volt); 120 int omap_vp_update_errorgain(struct voltagedomain *voltdm, 121 unsigned long target_volt); 122 123 #endif 124