/* * OMAP3/4 Voltage Processor (VP) structure and macro definitions * * Copyright (C) 2007, 2010 Texas Instruments, Inc. * Rajendra Nayak * Lesly A M * Thara Gopinath * * 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 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_data - register data common to all VDDs * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg * @vpconfig_timeouten_mask: 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 * @vpconfig_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg * @vpconfig_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg * @vpconfig_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg * @vpconfig_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg * @vpconfig_vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg * @vpconfig_vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg * @vpconfig_vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg * @prm_mod: PRM module id used for PRM register access * * XXX It it not necessary to have both a mask and a shift for the same * bitfield - remove one * XXX Many of these fields are wrongly named -- e.g., vpconfig_smps* -- fix! */ struct omap_vp_common_data { u32 vpconfig_errorgain_mask; u32 vpconfig_initvoltage_mask; u32 vpconfig_timeouten; u32 vpconfig_initvdd; u32 vpconfig_forceupdate; u32 vpconfig_vpenable; s16 prm_mod; u8 vpconfig_erroroffset_shift; u8 vpconfig_errorgain_shift; u8 vpconfig_initvoltage_shift; 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; const struct omap_vp_ops *ops; }; /** * struct omap_vp_instance_data - VP register offsets (per-VDD) * @vp_common: pointer to struct omap_vp_common_data * 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. * * XXX vp_common is probably not needed since it is per-SoC */ struct omap_vp_instance_data { const struct omap_vp_common_data *vp_common; u8 vpconfig; u8 vstepmin; u8 vstepmax; u8 vlimitto; u8 vstatus; u8 voltage; u8 id; }; /** * struct omap_vp_runtime_data - VP data populated at runtime by code * @vpconfig_erroroffset: value of ERROROFFSET bitfield in PRM_VP*_CONFIG * @vpconfig_errorgain: value of ERRORGAIN bitfield in PRM_VP*_CONFIG * @vstepmin_smpswaittimemin: value of SMPSWAITTIMEMIN bitfield in PRM_VP*_VSTEPMIN * @vstepmax_smpswaittimemax: value of SMPSWAITTIMEMAX bitfield in PRM_VP*_VSTEPMAX * @vlimitto_timeout: value of TIMEOUT bitfield in PRM_VP*_VLIMITTO * @vstepmin_stepmin: value of VSTEPMIN bitfield in PRM_VP*_VSTEPMIN * @vstepmax_stepmax: value of VSTEPMAX bitfield in PRM_VP*_VSTEPMAX * @vlimitto_vddmin: value of VDDMIN bitfield in PRM_VP*_VLIMITTO * @vlimitto_vddmax: value of VDDMAX bitfield in PRM_VP*_VLIMITTO * * XXX Is this structure really needed? Why not just program the * device directly? They are in PRM space, therefore in the WKUP * powerdomain, so register contents should not be lost in off-mode. * XXX Some of these fields are incorrectly named, e.g., vstep* */ struct omap_vp_runtime_data { u32 vpconfig_erroroffset; u16 vpconfig_errorgain; u16 vstepmin_smpswaittimemin; u16 vstepmax_smpswaittimemax; u16 vlimitto_timeout; u8 vstepmin_stepmin; u8 vstepmax_stepmax; u8 vlimitto_vddmin; u8 vlimitto_vddmax; }; extern struct omap_vp_instance_data omap3_vp1_data; extern struct omap_vp_instance_data omap3_vp2_data; extern struct omap_vp_instance_data omap4_vp_mpu_data; extern struct omap_vp_instance_data omap4_vp_iva_data; extern struct omap_vp_instance_data omap4_vp_core_data; void omap_vp_init(struct voltagedomain *voltdm); void omap_vp_enable(struct voltagedomain *voltdm); void omap_vp_disable(struct voltagedomain *voltdm); unsigned long omap_vp_get_curr_volt(struct voltagedomain *voltdm); int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, unsigned long target_volt); #endif