mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
e6d3a8b0bd
OMAP4 has module specific context lost registers which makes it now possible to have module level context loss count, instead of relying on the powerdomain level context count. Add 2 private hwmod api's to update/clear the hwmod/module specific context lost counters/register. Update the module specific context_lost_counter and clear the hardware bits just after enabling the module. omap_hwmod_get_context_loss_count() now returns the hwmod context loss count them on platforms where they exist (OMAP4), else fall back on the pwrdm level counters for older platforms. Signed-off-by: Rajendra Nayak <rnayak@ti.com> [paul@pwsan.com: added function kerneldoc, fixed structure kerneldoc, rearranged structure to avoid memory waste, marked fns as OMAP4-specific, prevent fn entry on non-OMAP4 chips, reduced indentation, merged update and clear, merged patches] [t-kristo@ti.com: added support for arch specific hwmod ops, and changed the no context offset indicator to USHRT_MAX] Signed-off-by: Tero Kristo <t-kristo@ti.com> [paul@pwsan.com: use NO_CONTEXT_LOSS_BIT flag rather than USHRT_MAX; convert unsigned context lost counter to int to match the return type; get rid of hwmod_ops in favor of the existing soc_ops mechanism; move context loss low-level accesses to the PRM code] Signed-off-by: Paul Walmsley <paul@pwsan.com>
141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
|
|
* OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions
|
|
*
|
|
* Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
|
|
* Copyright (C) 2010 Nokia Corporation
|
|
*
|
|
* 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_PRM_H
|
|
#define __ARCH_ARM_MACH_OMAP2_PRM_H
|
|
|
|
#include "prcm-common.h"
|
|
|
|
# ifndef __ASSEMBLER__
|
|
extern void __iomem *prm_base;
|
|
extern void omap2_set_globals_prm(void __iomem *prm);
|
|
# endif
|
|
|
|
|
|
/*
|
|
* MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
|
|
* module to softreset
|
|
*/
|
|
#define MAX_MODULE_SOFTRESET_WAIT 10000
|
|
|
|
/*
|
|
* MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
|
|
* submodule to exit hardreset
|
|
*/
|
|
#define MAX_MODULE_HARDRESET_WAIT 10000
|
|
|
|
/*
|
|
* Register bitfields
|
|
*/
|
|
|
|
/*
|
|
* 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
|
|
*
|
|
* 2430: PM_PWSTST_MDM
|
|
*
|
|
* 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
|
|
* PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
|
|
* PM_PWSTST_NEON
|
|
*/
|
|
#define OMAP_INTRANSITION_MASK (1 << 20)
|
|
|
|
|
|
/*
|
|
* 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP
|
|
*
|
|
* 2430: PM_PWSTST_MDM
|
|
*
|
|
* 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
|
|
* PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
|
|
* PM_PWSTST_NEON
|
|
*/
|
|
#define OMAP_POWERSTATEST_SHIFT 0
|
|
#define OMAP_POWERSTATEST_MASK (0x3 << 0)
|
|
|
|
/*
|
|
* 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
|
|
* PM_PWSTCTRL_DSP, PM_PWSTST_MPU
|
|
*
|
|
* 2430: PM_PWSTCTRL_MDM shared bits
|
|
*
|
|
* 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE,
|
|
* PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
|
|
* PM_PWSTCTRL_NEON shared bits
|
|
*/
|
|
#define OMAP_POWERSTATE_SHIFT 0
|
|
#define OMAP_POWERSTATE_MASK (0x3 << 0)
|
|
|
|
/*
|
|
* Standardized OMAP reset source bits
|
|
*
|
|
* To the extent these happen to match the hardware register bit
|
|
* shifts, it's purely coincidental. Used by omap-wdt.c.
|
|
* OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever
|
|
* there are any bits remaining in the global PRM_RSTST register that
|
|
* haven't been identified, or when the PRM code for the current SoC
|
|
* doesn't know how to interpret the register.
|
|
*/
|
|
#define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT 0
|
|
#define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT 1
|
|
#define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT 2
|
|
#define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3
|
|
#define OMAP_SECU_WD_RST_SRC_ID_SHIFT 4
|
|
#define OMAP_EXTWARM_RST_SRC_ID_SHIFT 5
|
|
#define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT 6
|
|
#define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT 7
|
|
#define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT 8
|
|
#define OMAP_ICEPICK_RST_SRC_ID_SHIFT 9
|
|
#define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT 10
|
|
#define OMAP_C2C_RST_SRC_ID_SHIFT 11
|
|
#define OMAP_UNKNOWN_RST_SRC_ID_SHIFT 12
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
/**
|
|
* struct prm_reset_src_map - map register bitshifts to standard bitshifts
|
|
* @reg_shift: bitshift in the PRM reset source register
|
|
* @std_shift: bitshift equivalent in the standard reset source list
|
|
*
|
|
* The fields are signed because -1 is used as a terminator.
|
|
*/
|
|
struct prm_reset_src_map {
|
|
s8 reg_shift;
|
|
s8 std_shift;
|
|
};
|
|
|
|
/**
|
|
* struct prm_ll_data - fn ptrs to per-SoC PRM function implementations
|
|
* @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl
|
|
* @was_any_context_lost_old: ptr to the SoC PRM context loss test fn
|
|
* @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn
|
|
*
|
|
* XXX @was_any_context_lost_old and @clear_context_loss_flags_old are
|
|
* deprecated.
|
|
*/
|
|
struct prm_ll_data {
|
|
u32 (*read_reset_sources)(void);
|
|
bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx);
|
|
void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx);
|
|
};
|
|
|
|
extern int prm_register(struct prm_ll_data *pld);
|
|
extern int prm_unregister(struct prm_ll_data *pld);
|
|
|
|
extern u32 prm_read_reset_sources(void);
|
|
extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx);
|
|
extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx);
|
|
|
|
#endif
|
|
|
|
|
|
#endif
|