1/*
  2 * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions
  3 *
  4 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
  5 * Copyright (C) 2010 Nokia Corporation
  6 *
  7 * Paul Walmsley
  8 *
  9 * This program is free software; you can redistribute it and/or modify
 10 * it under the terms of the GNU General Public License version 2 as
 11 * published by the Free Software Foundation.
 12 */
 13#ifndef __ARCH_ARM_MACH_OMAP2_PRM_H
 14#define __ARCH_ARM_MACH_OMAP2_PRM_H
 15
 16#include "prcm-common.h"
 17
 18# ifndef __ASSEMBLER__
 19extern void __iomem *prm_base;
 20extern void omap2_set_globals_prm(void __iomem *prm);
 21int of_prcm_init(void);
 22# endif
 23
 24
 25/*
 26 * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
 27 * module to softreset
 28 */
 29#define MAX_MODULE_SOFTRESET_WAIT		10000
 30
 31/*
 32 * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
 33 * submodule to exit hardreset
 34 */
 35#define MAX_MODULE_HARDRESET_WAIT		10000
 36
 37/*
 38 * Register bitfields
 39 */
 40
 41/*
 42 * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
 43 *
 44 * 2430: PM_PWSTST_MDM
 45 *
 46 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
 47 *	 PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
 48 *	 PM_PWSTST_NEON
 49 */
 50#define OMAP_INTRANSITION_MASK				(1 << 20)
 51
 52
 53/*
 54 * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP
 55 *
 56 * 2430: PM_PWSTST_MDM
 57 *
 58 * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
 59 *	 PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
 60 *	 PM_PWSTST_NEON
 61 */
 62#define OMAP_POWERSTATEST_SHIFT				0
 63#define OMAP_POWERSTATEST_MASK				(0x3 << 0)
 64
 65/*
 66 * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
 67 *       PM_PWSTCTRL_DSP, PM_PWSTST_MPU
 68 *
 69 * 2430: PM_PWSTCTRL_MDM shared bits
 70 *
 71 * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE,
 72 *	 PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
 73 *	 PM_PWSTCTRL_NEON shared bits
 74 */
 75#define OMAP_POWERSTATE_SHIFT				0
 76#define OMAP_POWERSTATE_MASK				(0x3 << 0)
 77
 78/*
 79 * Standardized OMAP reset source bits
 80 *
 81 * To the extent these happen to match the hardware register bit
 82 * shifts, it's purely coincidental.  Used by omap-wdt.c.
 83 * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever
 84 * there are any bits remaining in the global PRM_RSTST register that
 85 * haven't been identified, or when the PRM code for the current SoC
 86 * doesn't know how to interpret the register.
 87 */
 88#define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT			0
 89#define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT			1
 90#define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT				2
 91#define OMAP_MPU_WD_RST_SRC_ID_SHIFT				3
 92#define OMAP_SECU_WD_RST_SRC_ID_SHIFT				4
 93#define OMAP_EXTWARM_RST_SRC_ID_SHIFT				5
 94#define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT			6
 95#define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT			7
 96#define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT			8
 97#define OMAP_ICEPICK_RST_SRC_ID_SHIFT				9
 98#define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT			10
 99#define OMAP_C2C_RST_SRC_ID_SHIFT				11
100#define OMAP_UNKNOWN_RST_SRC_ID_SHIFT				12
101
102#ifndef __ASSEMBLER__
103
104/**
105 * struct prm_reset_src_map - map register bitshifts to standard bitshifts
106 * @reg_shift: bitshift in the PRM reset source register
107 * @std_shift: bitshift equivalent in the standard reset source list
108 *
109 * The fields are signed because -1 is used as a terminator.
110 */
111struct prm_reset_src_map {
112	s8 reg_shift;
113	s8 std_shift;
114};
115
116/**
117 * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations
118 * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl
119 * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn
120 * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn
121 *
122 * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are
123 * deprecated.
124 */
125struct prm_ll_data {
126	u32 (*read_reset_sources)(void);
127	bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx);
128	void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx);
129};
130
131extern int prm_register(struct prm_ll_data *pld);
132extern int prm_unregister(struct prm_ll_data *pld);
133
134extern u32 prm_read_reset_sources(void);
135extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx);
136extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx);
137
138#endif
139
140
141#endif