| /* 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 |
