/* * include/asm-mips/jzsoc/jz_dpm.h  JzSOC-specific definitions for DPM *  * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Copyright (C) 2002, MontaVista Software <source@mvista.com> * * Adapted for JzSOC by Ingenic * Copyright (c) 2005 Ingenic IC Inc. * */#ifndef __ASM_JZSOC_DPM_H__#define __ASM_JZSOC_DPM_H__/* * machine dependent operating state * * An operating state is a cpu execution state that has implications for power * management. The DPM will select operating points based largely on the * current operating state. * * DPM_STATES is the number of supported operating states. Valid operating * states are from 0 to DPM_STATES-1 but when setting an operating state the * kernel should only specify a state from the set of "base states" and should * do so by name.  During the context switch the new operating state is simply * extracted from current->dpm_state. * * task states: * * APIs that reference task states use the range -(DPM_TASK_STATE_LIMIT + 1) * through +DPM_TASK_STATE_LIMIT.  This value is added to DPM_TASK_STATE to * obtain the downward or upward adjusted task state value. The * -(DPM_TASK_STATE_LIMIT + 1) value is interpreted specially, and equates to * DPM_NO_STATE. * * Tasks inherit their task operating states across calls to * fork(). DPM_TASK_STATE is the default operating state for all tasks, and is * inherited from init.  Tasks can change (or have changed) their tasks states * using the DPM_SET_TASK_STATE variant of the sys_dpm() system call.  */#define DPM_NO_STATE        -1#define DPM_RELOCK_STATE     0#define DPM_IDLE_TASK_STATE  1#define DPM_IDLE_STATE       2#define DPM_SLEEP_STATE      3#define DPM_BASE_STATES      4#define DPM_TASK_STATE_LIMIT 4#define DPM_TASK_STATE       (DPM_BASE_STATES + DPM_TASK_STATE_LIMIT)#define DPM_STATES           (DPM_TASK_STATE + DPM_TASK_STATE_LIMIT + 1)#define DPM_TASK_STATES      (DPM_STATES - DPM_BASE_STATES)#define DPM_STATE_NAMES                  \{ "relock", "idle-task", "idle", "sleep",\  "task-4", "task-3", "task-2", "task-1",\  "task",                                \  "task+1", "task+2", "task+3", "task+4" \}/* MD operating point parameters */#define DPM_MD_V		0  #define DPM_MD_PLL_NF		1  /* PLL freq: feedback div */#define DPM_MD_PLL_NR		2  /* PLL freq: input div */#define DPM_MD_PLL_NO		3  /* PLL freq: output div */#define DPM_MD_ICLK_DIV		4  /* ICLK division */#define DPM_MD_SCLK_DIV		5  /* SCLK division */#define DPM_MD_MCLK_DIV		6  /* MCLK division */#define DPM_MD_PCLK_DIV		7  /* PCLK division */#define DPM_PP_NBR 		8#ifdef __KERNEL__#ifndef __ASSEMBLER__#include <linux/types.h>#include <linux/proc_fs.h>#include <asm/preem_latency.h>#define DPM_MD_STATStypedef __u64 dpm_md_count_t;typedef __u64 dpm_md_time_t;#if 0#define dpm_md_time() ~((unsigned long)REG32(TMU_TCNT2))/* mputimer 1 runs @ 6Mhz  6 ticks = 1 microsecond */#define DPM_MD_HZ 6 * 1000000/* Hardcode this for now. */#define tb_ticks_per_second DPM_MD_HZ   #else// FIXME: Hardcode dummy for now, and maybe should support for JzSOC later#define dpm_md_time()		1#define DPM_MD_HZ		1000000#define tb_ticks_per_second	DPM_MD_HZ#endif/* Disable *all* asynchronous interrupts for a super-critical section.  Must   occur in pairs.  This is necessarily done this way because RT Linux hacks   break the symmetry of save/restore flags. */#define critical_save_and_cli(flags) save_and_cli(flags)#define critical_restore_flags(flags) restore_flags(flags)/* * This contains the registers value for an operating point. * If only part of a register needs to change then there is * a mask value for that register. * When going to a new operating point the current register * value is ANDed with the ~mask and ORed with the new value. */struct dpm_regs {	u32 cfcr;         /* Clock Freq Control Register */	u32 cfcr_mask;    /* Clock Freq Control Register mask */	u32 cfcr2;        /* Clock Freq Control Register 2 */	u32 cfcr2_mask;   /* Clock Freq Control Register 2 mask */	u32 plcr1;        /* PLL1 Control Register */	u32 plcr1_mask;   /* PLL1 Control Register mask */	u32 pll_up_flag;  /* New PLL freq is higher than current or not */};/* Instances of this structure define valid Innovator operating points for DPM.   Voltages are represented in mV, and frequencies are represented in KHz. */ struct dpm_md_opt {        unsigned int v;         /* Target voltage in mV */	unsigned int pll;	/* PLL output frequency in Hz */	unsigned int cpu;	/* CPU frequency in Hz */	unsigned int sys;	unsigned int mem;	unsigned int per;        unsigned int lpj;	/* New value for loops_per_jiffy */	struct dpm_regs regs;   /* Register values */};void dpm_jz_board_setup(void);typedef void (*dpm_fscaler)(struct dpm_regs *regs);#define basic_idle(parms) jz_pm_idle()/* Machine-dependent operating point creating/query/setting */#endif /* __ASSEMBLER__ */#endif /* __KERNEL__ */#endif /* __ASM_JZSOC_DPM_H__ */