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flash pm.c, default close it control

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This commit is contained in:
宋秀杰
2010-09-14 07:20:07 -07:00
parent ea3fa6bd5d
commit 4e09917dcd
1 changed files with 22 additions and 33 deletions
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55
arch/arm/mach-rk2818/pm.c
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@@ -81,15 +81,6 @@ static inline u32 sdram_get_mem_type(void)
#define MODE5_CNT(n) (((n) & 0xFFFF) << 16)
#define CTRL_REG_62 0xf8 // LOWPOWER_INTERNAL_CNT/LOWPOWER_EXTERNAL_CNT.
/****************************************************************/
//函数名: sdram_enter_self_refresh
//描述: SDRAM进入自刷新模式
//参数说明:
//返回值: 对于DDR就是CTRL_REG_62的值，供sdram_exit_self_refresh使用
//相关全局变量:
//注意:(1)系统完全idle后才能进入自刷新模式，进入自刷新后不能再访问SDRAM
// (2)要进入自刷新模式，必须保证运行时这个函数所调用到的所有代码不在SDRAM上
/****************************************************************/
u32 __tcmfunc sdram_enter_self_refresh(void)
{
u32 r;
@@ -100,7 +91,7 @@ u32 __tcmfunc sdram_enter_self_refresh(void)
case MOBILE_SDRAM:
msdr_writel(msdr_readl(MSDR_SCTLR) | ENTER_SELF_REFRESH, MSDR_SCTLR);
while (!(msdr_readl(MSDR_SCTLR) & SR_MODE)); //确定已经进入self-refresh
while (!(msdr_readl(MSDR_SCTLR) & SR_MODE));
/* Disable Mobile SDRAM/SDRAM Common/Controller hclk clock */
r = scu_readl(SCU_CLKGATE1_CON);
@@ -116,22 +107,13 @@ u32 __tcmfunc sdram_enter_self_refresh(void)
case MOBILE_DDR:
r = ddr_readl(CTRL_REG_62);
ddr_writel((r & ~MODE5_MASK) | MODE5_CNT(1), CTRL_REG_62);
//FIXME: 等待进入self-refresh
break;
}
return r;
}
/****************************************************************/
//函数名: sdram_exit_self_refresh
//描述: SDRAM退出自刷新模式
//参数说明:
//返回值:
//相关全局变量:
//注意:(1)SDRAM在自刷新模式后不能被访问，必须先退出自刷新模式
// (2)必须保证运行时这个函数的代码不在SDRAM上
/****************************************************************/
void __tcmfunc sdram_exit_self_refresh(u32 ctrl_reg_62)
{
u32 r;
@@ -152,7 +134,7 @@ void __tcmfunc sdram_exit_self_refresh(u32 ctrl_reg_62)
msdr_writel(msdr_readl(MSDR_SCTLR) & ~ENTER_SELF_REFRESH, MSDR_SCTLR);
while (msdr_readl(MSDR_SCTLR) & SR_MODE); //确定退出进入self-refresh
while (msdr_readl(MSDR_SCTLR) & SR_MODE);
break;
case DDRII:
@@ -161,9 +143,9 @@ void __tcmfunc sdram_exit_self_refresh(u32 ctrl_reg_62)
break;
}
tcm_udelay(100, 24); //DRVDelayUs(100); 延时一下比较安全，保证退出后稳定
tcm_udelay(100, 24); //DRVDelayUs(100);
}
#define RK2818_MOBLIE_PM_CON
//#define RK2818_MOBLIE_PM_CON
#ifdef RK2818_MOBLIE_PM_CON
#define RK2818_MOBLIE_PM_PRT_ORIGINAL_REG
@@ -297,16 +279,15 @@ static void __tcmfunc rk2818_pm_suspend_first(struct rk2818_pm_st *pm_save)
pm_save->gpio1_regbit=0x6db;
//pm_save->savereg[0]=rk2818_ddr_reg[82];
//rk2818_ddr_reg[82]=rk2818_ddr_reg[82]&(~(0xffff))&(~(0xf<<20));
//pm_set_gpio_pinstate(RK2818_PIN_PC2,1,0); //<2F><><EFBFBD><EFBFBD>PMU<4D><55>DVS<56><53>
//pm_set_gpio_pinstate(RK2818_PIN_PC2,1,0);
}
static void __tcmfunc rk2818_pm_resume_first(struct rk2818_pm_st *pm_save)
{
unsigned int *rk2818_ddr_reg=(unsigned int *)RK2818_SDRAMC_BASE;
//pm_set_gpio_pinstate(RK2818_PIN_PC2,1,1); //<2F><><EFBFBD><EFBFBD>PMU<4D><55>DVS<56><53>
//pm_set_gpio_pinstate(RK2818_PIN_PC2,1,1);
//rk2818_ddr_reg[82]=pm_save->save[0];
}
@@ -365,6 +346,10 @@ static void __tcmfunc rk2818_soc_scu_suspend(struct rk2818_pm_st *pm_save)
}
// output 1 is a output pin
static void __tcmfunc rk2818_soc_general_cpu_suspend(struct rk2818_pm_st *pm_save)
{
@@ -465,6 +450,7 @@ static void __tcmfunc rk2818_soc_general_cpu_suspend(struct rk2818_pm_st *pm_sav
}
static void rk2818_pm_reg_print(unsigned int *pm_save_reg,unsigned int *pm_ch_reg,int num,char *name)
{
int i;
#ifdef RK2818_MOBLIE_PM_PRT_ORIGINAL_REG
@@ -545,8 +531,12 @@ static int __tcmfunc rk2818_tcm_idle(void)
rk2818_pm_suspend_first((struct rk2818_pm_st *)&pm_save.pm_scu_reg);
tcm_udelay(1, 24);
rk2818_pm_soc_suspend((struct rk2818_pm_st *)&pm_save.pm_scu_reg);
//pm_set_gpio_pinstate(RK2818_PIN_PC2,1,0);
tcm_udelay(1, 24);
asm("mcr p15, 0, r0, c7, c0, 4"); /* wait for interrupt */
//pm_set_gpio_pinstate(RK2818_PIN_PC2,1,1);
rk2818_pm_resume_first((struct rk2818_pm_st *)&pm_save.pm_scu_reg);
tcm_udelay(1, 24);
rk2818_pm_soc_resume((struct rk2818_pm_st *)&pm_save.pm_scu_reg);
@@ -569,7 +559,7 @@ static int __tcmfunc rk2818_tcm_idle(void)
tcm_udelay(5, 24);
scu_writel(scu_mode, SCU_MODE_CON); // normal
rk2818_pm_print((struct rk2818_pm_st *)&pm_save.pm_scu_reg);
//rk2818_pm_print((struct rk2818_pm_st *)&pm_save.pm_scu_reg);
return unit;
}
@@ -587,10 +577,10 @@ static void rk2818_idle(void)
static int rk2818_pm_enter(suspend_state_t state)
{
int irq_val = 0;
struct regulator *buck1;
u32 scu_mode = scu_readl(SCU_MODE_CON);
u32 scu_apll = scu_readl(SCU_APLL_CON);
u32 scu_clksel0 = scu_readl(SCU_CLKSEL0_CON);
// struct regulator *buck1;
// u32 scu_mode = scu_readl(SCU_MODE_CON);
// u32 scu_apll = scu_readl(SCU_APLL_CON);
// u32 scu_clksel0 = scu_readl(SCU_CLKSEL0_CON);
printk(KERN_DEBUG "before core halt\n");
@@ -633,4 +623,3 @@ static int __init rk2818_pm_init(void)
}
__initcall(rk2818_pm_init);