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rk3x: pmic: rk818: support low battery detect,and slove otg error.

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Add function:
1)battery voltage low then 3.0V not allow to power on.
2)battery voltage low then 3.4V have irq to wakeup from deep sleep.
3)disable otg_en when rk818 shutdown..

Signed-off-by: zhangqing <zhangqing@rock-chips.com>
This commit is contained in:
zhangqing
2015-06-08 10:30:41 -07:00
parent a2cc02921a
commit da2e4ebd02
1 changed files with 36 additions and 3 deletions
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39
drivers/mfd/rk818.c
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@@ -1029,6 +1029,9 @@ static void rk818_shutdown(void)
pr_info("%s\n", __func__);
ret = rk818_set_bits(rk818, RK818_INT_STS_MSK_REG1,(0x3<<5),(0x3<<5)); //close rtc int when power off
ret = rk818_clear_bits(rk818, RK818_RTC_INT_REG,(0x3<<2)); //close rtc int when power off
/*disable otg_en*/
ret = rk818_clear_bits(rk818, RK818_DCDC_EN_REG, (0x1<<7));
mutex_lock(&rk818->io_lock);
mdelay(100);
}
@@ -1063,14 +1066,43 @@ __weak void rk818_device_suspend(void) {}
__weak void rk818_device_resume(void) {}
#ifdef CONFIG_PM
static int rk818_suspend(struct i2c_client *i2c, pm_message_t mesg)
{
{
int ret, val;
struct rk818 *rk818 = g_rk818;
rk818_device_suspend();
/************set vbat low 3v4 to irq**********/
val = rk818_reg_read(rk818, RK818_VB_MON_REG);
val &= (~(VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK));
val |= (RK818_VBAT_LOW_3V4 | EN_VBAT_LOW_IRQ);
ret = rk818_reg_write(rk818, RK818_VB_MON_REG, val);
if (ret < 0) {
pr_err("Unable to write RK818_VB_MON_REG reg\n");
return ret;
}
/*enable low irq*/
rk818_set_bits(rk818, 0x4d, (0x1 << 1), (0x0 << 1));
return 0;
}
static int rk818_resume(struct i2c_client *i2c)
{
int ret, val;
struct rk818 *rk818 = g_rk818;
rk818_device_resume();
/********set vbat low 3v0 to shutdown**********/
val = rk818_reg_read(rk818, RK818_VB_MON_REG);
val &= (~(VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK));
val |= (RK818_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN);
ret = rk818_reg_write(rk818, RK818_VB_MON_REG, val);
if (ret < 0) {
pr_err("Unable to write RK818_VB_MON_REG reg\n");
return ret;
}
/*disable low irq*/
rk818_set_bits(rk818, 0x4d, (0x1 << 1), (0x1 << 1));
return 0;
}
#else
@@ -1105,11 +1137,10 @@ static int rk818_pre_init(struct rk818 *rk818)
return ret;
}
/****************************************/
/****************set vbat low **********/
val = rk818_reg_read(rk818,RK818_VB_MON_REG);
val &=(~(VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK));
val |= (RK818_VBAT_LOW_3V5 | EN_VBAT_LOW_IRQ);
val |= (RK818_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN);
ret = rk818_reg_write(rk818,RK818_VB_MON_REG,val);
if (ret <0) {
printk(KERN_ERR "Unable to write RK818_VB_MON_REG reg\n");
@@ -1118,6 +1149,7 @@ static int rk818_pre_init(struct rk818 *rk818)
/**************************************/
/**********mask int****************/
val = rk818_reg_read(rk818,RK818_INT_STS_MSK_REG1);
val |= (0x1<<0); //mask vout_lo_int
ret = rk818_reg_write(rk818,RK818_INT_STS_MSK_REG1,val);
@@ -1125,6 +1157,7 @@ static int rk818_pre_init(struct rk818 *rk818)
printk(KERN_ERR "Unable to write RK818_INT_STS_MSK_REG1 reg\n");
return ret;
}
/**********************************/
/**********enable clkout2****************/
ret = rk818_reg_write(rk818,RK818_CLK32OUT_REG,0x01);