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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | /* * 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 * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. */ #ifndef __ARCH_ARM_MACH_OMAP2_VP_H #define __ARCH_ARM_MACH_OMAP2_VP_H #include <linux/kernel.h> struct voltagedomain; /* * Voltage Processor (VP) identifiers */ #define OMAP3_VP_VDD_MPU_ID 0 #define OMAP3_VP_VDD_CORE_ID 1 #define OMAP4_VP_VDD_CORE_ID 0 #define OMAP4_VP_VDD_IVA_ID 1 #define OMAP4_VP_VDD_MPU_ID 2 /* 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; 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 |