static int sprd_rtc_set_aux_alarm_sec(unsigned long secs)
{
unsigned sec, min, hour, day;
unsigned long temp;
sec = secs % 60;
temp = (secs - sec)/60;
min = temp%60;
temp = (temp - min)/60;
hour = temp%24;
temp = (temp - hour)/24;
day = temp;
sci_adi_set(ANA_RTC_INT_CLR, RTC_AUXALM_BIT);
sci_adi_raw_write(ANA_RTC_AUX_SEC_ALM, sec);
sci_adi_raw_write(ANA_RTC_AUX_MIN_ALM, min);
sci_adi_raw_write(ANA_RTC_AUX_HOUR_ALM, hour);
sci_adi_raw_write(ANA_RTC_AUX_DAY_ALM, day);
return 0;
}
static int sprd_rtc_set_alarm(struct device *dev,
struct rtc_wkalrm *alrm)
{
unsigned long secs;
unsigned temp;
sci_adi_raw_write(ANA_RTC_INT_CLR, RTC_ALARM_BIT);
if(alrm->enabled){
rtc_tm_to_time(&alrm->time, &secs);
if(secs < secs_start_year_to_1970)
return -1;
temp = sci_adi_read(ANA_RTC_INT_EN);
temp |= RTC_ALARM_BIT;
sci_adi_raw_write(ANA_RTC_INT_EN, temp);
secs = secs - secs_start_year_to_1970;
wake_lock(&rtc_wake_lock);
sprd_rtc_set_alarm_sec(secs);
sci_adi_raw_write(ANA_RTC_SPG_UPD, SPRD_RTC_UNLOCK);
wake_unlock(&rtc_wake_lock);
}else{
sci_adi_clr(ANA_RTC_INT_EN, RTC_ALARM_BIT);
sci_adi_raw_write(ANA_RTC_SPG_UPD, SPRD_RTC_LOCK);
msleep(150);
}
return 0;
}
static u32 adie_efuse_read(int blk_index)
{
u32 val = 0;
pr_debug("adie efuse read %d\n", blk_index);
adie_efuse_lock();
__adie_efuse_power_on();
/* enable adie_efuse module clk and power before */
/* FIXME: set read timing, why 0x20 (default value)
sci_adi_raw_write(ANA_REG_EFUSE_RD_TIMING_CTRL,
BITS_EFUSE_RD_TIMING(0x20));
*/
sci_adi_raw_write(ANA_REG_EFUSE_BLOCK_INDEX,
BITS_READ_WRITE_INDEX(blk_index));
sci_adi_raw_write(ANA_REG_EFUSE_MODE_CTRL, BIT_RD_START);
if (IS_ERR_VALUE(__adie_efuse_wait_clear(BIT_READ_BUSY)))
goto out;
val = sci_adi_read(ANA_REG_EFUSE_DATA_RD);
/* FIXME: reverse the otp value */
val = BITS_EFUSE_DATA_RD(~val);
out:
__adie_efuse_power_off();
adie_efuse_unlock();
return val;
}
/* use ana watchdog to wake up */
void pm_debug_set_apwdt(void)
{
uint32_t cnt = 0;
uint32_t ms = 5000;
cnt = (ms * WDG_CLK) / 1000;
sci_glb_set(INT_IRQ_ENB, BIT(11));
/*enable interface clk*/
sci_adi_set(ANA_AGEN, AGEN_WDG_EN);
/*enable work clk*/
sci_adi_set(ANA_RTC_CLK_EN, AGEN_RTC_WDG_EN);
sci_adi_raw_write(WDG_LOCK, WDG_UNLOCK_KEY);
sci_adi_set(WDG_CTRL, WDG_NEW_VER_EN);
WDG_LOAD_TIMER_VALUE(0x80000);
WDG_LOAD_TIMER_INT_VALUE(0x40000);
sci_adi_set(WDG_CTRL, WDG_CNT_EN_BIT | WDG_INT_EN_BIT| WDG_RST_EN_BIT);
sci_adi_raw_write(WDG_LOCK, (uint16_t) (~WDG_UNLOCK_KEY));
sci_adi_set(ANA_REG_INT_EN, BIT(3));
#if 0
do{
udelay(1000);
printk("INTC1 mask:0x%08x raw:0x%08x en:0x%08x\n", __raw_readl(INTCV1_IRQ_MSKSTS),__raw_readl(INTCV1_IRQ_RAW), __raw_readl(INTCV1_IRQ_EN));
printk("INT mask:0x%08x raw:0x%08x en:0x%08x ana 0x%08x\n", __raw_readl(INT_IRQ_STS),__raw_readl(INT_IRQ_RAW), __raw_readl(INT_IRQ_ENB), sci_adi_read(ANA_REG_INT_MASK_STATUS));
printk("ANA mask:0x%08x raw:0x%08x en:0x%08x\n", sci_adi_read(ANA_REG_INT_MASK_STATUS), sci_adi_read(ANA_REG_INT_RAW_STATUS), sci_adi_read(ANA_REG_INT_EN));
printk("wdg cnt low 0x%08x high 0x%08x\n", sci_adi_read(WDG_CNT_LOW), sci_adi_read(WDG_CNT_HIGH));
}while(0);
#endif
}
static int sprd_rtc_set_sec(unsigned long secs)
{
unsigned sec, min, hour, day;
unsigned set_mask = 0, int_rsts;
unsigned long temp;
int i = 0;
sec = secs % 60;
temp = (secs - sec)/60;
min = temp%60;
temp = (temp - min)/60;
hour = temp%24;
temp = (temp - hour)/24;
day = temp;
sci_adi_set(ANA_RTC_INT_CLR, RTC_UPD_TIME_MASK);
if(sec != get_sec()){
sci_adi_raw_write(ANA_RTC_SEC_UPDATE, sec);
set_mask |= RTC_SEC_ACK_BIT;
}
if(min != get_min()){
sci_adi_raw_write(ANA_RTC_MIN_UPDATE, min);
set_mask |= RTC_MIN_ACK_BIT;
}
if(hour != get_hour()){
sci_adi_raw_write(ANA_RTC_HOUR_UPDATE, hour);
set_mask |= RTC_HOUR_ACK_BIT;
}
if(day != get_day()){
sci_adi_raw_write(ANA_RTC_DAY_UPDATE, day);
set_mask |= RTC_DAY_ACK_BIT;
}
/*
* wait till all update done
*/
do{
int_rsts = sci_adi_read(ANA_RTC_INT_RSTS) & RTC_UPD_TIME_MASK;
if(set_mask == int_rsts)
break;
if(i < SPRD_RTC_SET_MAX){
msleep(1);
i++;
}else{
return 1;
}
}while(1);
sci_adi_set(ANA_RTC_INT_CLR, RTC_UPD_TIME_MASK);
return 0;
}
static void sc8825_power_off(void)
{
/*ture off all modules ldo*/
sci_adi_raw_write(ANA_REG_GLB_LDO_PD_CTRL1, 0x5555);
sci_adi_raw_write(ANA_REG_GLB_LDO_PD_CTRL0, 0x5555);
/*ture off all system cores ldo*/
sci_adi_clr(ANA_REG_GLB_LDO_PD_RST, 0x3ff);
sci_adi_set(ANA_REG_GLB_LDO_PD_SET, 0x3ff);
}
static int sprd_rtc_set_alarm_sec(unsigned long secs)
{
unsigned sec, min, hour, day;
unsigned long temp;
unsigned set_mask = 0, int_rsts;
int i = 0;
sec = secs % 60;
temp = (secs - sec)/60;
min = temp%60;
temp = (temp - min)/60;
hour = temp%24;
temp = (temp - hour)/24;
day = temp;
sci_adi_set(ANA_RTC_INT_CLR, RTC_ALM_TIME_MASK);
sci_adi_raw_write(ANA_RTC_SEC_ALM, sec);
set_mask |= RTC_SEC_ALM_ACK_BIT;
sci_adi_raw_write(ANA_RTC_MIN_ALM, min);
set_mask |= RTC_MIN_ALM_ACK_BIT;
sci_adi_raw_write(ANA_RTC_HOUR_ALM, hour);
set_mask |= RTC_HOUR_ALM_ACK_BIT;
sci_adi_raw_write(ANA_RTC_DAY_ALM, day);
set_mask |= RTC_DAY_ALM_ACK_BIT;
/*
* wait till all update done
*/
do{
int_rsts = sci_adi_read(ANA_RTC_INT_RSTS) & RTC_ALM_TIME_MASK;
if(set_mask == int_rsts)
break;
if(i < SPRD_RTC_SET_MAX){
msleep(1);
i++;
}else{
return 1;
}
}while(1);
sci_adi_set(ANA_RTC_INT_CLR, RTC_ALM_TIME_MASK);
#if defined(CONFIG_RTC_CHN_ALARM_BOOT)
sprd_rtc_set_bit_spg_counter(SPG_CNT_ALARM_BOOT, 0);
#endif
return 0;
}
static int sprd_rtc_open(struct device *dev)
{
int temp = 0;
/* enable rtc interrupt */
temp = sci_adi_read(ANA_RTC_INT_EN);
temp |= RTC_ALARM_BIT;
sci_adi_raw_write(ANA_RTC_INT_EN, temp);
//add by wbl
sci_adi_raw_write(ANA_RTC_SPG_UPD, SPRD_RTC_UNLOCK);
printk(KERN_EMERG "sprd_rtc_open is calling!\n");
return 0;
}
void sprd_rtc_set_spg_counter(u16 value)
{
u16 spg_cnt = 0;
u32 int_sts = 0;
int timeout = SPRD_RTC_SET_MAX;
spg_cnt = sci_adi_read(ANA_RTC_SPG_CNT)&RTC_SPG_CNT_MASK;
if (spg_cnt == value)
return;
sci_adi_set(ANA_RTC_INT_CLR, RTC_SPG_CNT_ACK_BIT);
sci_adi_raw_write(ANA_RTC_SPG_CNT_UPD, (value&RTC_SPG_CNT_MASK));
for(;;) {
if (timeout && int_sts != RTC_SPG_CNT_ACK_BIT) {
int_sts = sci_adi_read(ANA_RTC_INT_RSTS)&RTC_SPG_CNT_ACK_BIT;
msleep(1);
timeout--;
}
else
break;
}
sci_adi_set(ANA_RTC_INT_CLR, RTC_SPG_CNT_ACK_BIT);
}
static int sprd_rtc_set_alarm(struct device *dev,
struct rtc_wkalrm *alrm)
{
unsigned long secs;
unsigned temp;
unsigned long read_secs;
int i = 0,n;
rtc_tm_to_time(&alrm->time, &secs);
sci_adi_raw_write(ANA_RTC_INT_CLR, RTC_ALARM_BIT);
// printk("sprd_rtc_set_alarm enable : %d, : %lu, secs : %lu\n", alrm->enabled, secs_start_year_to_1970, secs);
// printk("sprd_rtc_set_alarm - day [%d] hour [%d] min [%d] sec [%d]\n", alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, alrm->time.tm_sec);
if(alrm->enabled){
if(secs < secs_start_year_to_1970)
return -1;
temp = sci_adi_read(ANA_RTC_INT_EN);
temp |= RTC_ALARM_BIT;
sci_adi_raw_write(ANA_RTC_INT_EN, temp);
secs = secs - secs_start_year_to_1970;
wake_lock(&rtc_wake_lock);
n = 2;
while(sprd_rtc_set_alarm_sec(secs)!=0&&(n--)>0);
do {
if(i!=0){
n = 2;
while(sprd_rtc_set_alarm_sec(secs)!=0&&(n--)>0);
}
read_secs = sprd_rtc_get_alarm_sec();
msleep(1);
i++;
}while(read_secs != secs && i < SPRD_RTC_SET_MAX);
//sci_adi_raw_write(ANA_RTC_SPG_UPD, SPRD_RTC_UNLOCK);
wake_unlock(&rtc_wake_lock);
}else{
sci_adi_clr(ANA_RTC_INT_EN, RTC_ALARM_BIT);
//sci_adi_raw_write(ANA_RTC_SPG_UPD, SPRD_RTC_LOCK);
msleep(150);
}
return 0;
}
static int sprd_rtc_open(struct device *dev)
{
int temp = 0;
/* enable rtc interrupt */
temp = sci_adi_read(ANA_RTC_INT_EN);
temp |= RTC_ALARM_BIT;
sci_adi_raw_write(ANA_RTC_INT_EN, temp);
return 0;
}
static int sprd_rtc_set_alarm_sec(unsigned long secs)
{
unsigned sec, min, hour, day;
unsigned long temp;
u32 timeout = 0;
static bool rtc_alarm_in_update = false;
sec = secs % 60;
temp = (secs - sec)/60;
min = temp%60;
temp = (temp - min)/60;
hour = temp%24;
temp = (temp - hour)/24;
day = temp;
if (rtc_alarm_in_update) {
while ((sci_adi_read(ANA_RTC_INT_RSTS) & RTC_ALM_TIME_MASK) !=
RTC_ALM_TIME_MASK)
{
msleep(10);
if (timeout++ > SPRD_RTC_SET_MAX) {
printk("rtc set alarm timeout!\n");
break;
}
}
}
printk("++++++rtc set alarm and delay is %d !++++++\n", timeout * 10);
sci_adi_set(ANA_RTC_INT_CLR, RTC_ALM_TIME_MASK);
sci_adi_raw_write(ANA_RTC_SEC_ALM, sec);
sci_adi_raw_write(ANA_RTC_MIN_ALM, min);
sci_adi_raw_write(ANA_RTC_HOUR_ALM, hour);
sci_adi_raw_write(ANA_RTC_DAY_ALM, day);
rtc_alarm_in_update = true;
return 0;
}
static int sci_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(1, &wdt_users))
return -EBUSY;
/* started the watchdog when it's openned for the 1st time */
if (wdt_state == 0) {
/* start the watchdog */
sci_adi_set(ANA_AGEN, AGEN_WDG_EN | AGEN_RTC_ARCH_EN | AGEN_RTC_WDG_EN);
sci_adi_raw_write (WDG_LOCK, WDG_UNLOCK_KEY);
sci_adi_clr (WDG_CTRL, WDG_INT_EN_BIT);
WDG_LOAD_TIMER_VALUE(margin * WDT_FREQ);
#ifdef CONFIG_ARCH_SC8825
sci_adi_set(WDG_CTRL, WDG_CNT_EN_BIT | WDG_RST_EN_BIT);
#else
sci_adi_set(WDG_CTRL, WDG_CNT_EN_BIT);
#endif
mod_timer(&feeder_timer, jiffies + (feed_period * HZ));
wdt_state = 1;
}
return nonseekable_open(inode, file);
}
static void a_write_reg(uint32_t value, uint32_t addr)
{
sci_adi_raw_write(addr, value);
}
int dcdc_calibrate(int adc_chan, int def_vol, int to_vol)
{
int i;
u32 val[MEASURE_TIMES], sum = 0, adc_vol, ctl_vol, cal_vol;
for (i = 0; i < ARRAY_SIZE(val); i++) {
sum += val[i] = sci_adc_get_value(adc_chan, true);
}
sum /= ARRAY_SIZE(val); /* get average value */
info("adc chan %d, value %d\n", adc_chan, sum);
adc_vol = sprd_get_adc_to_vol(sum) * (8 * 5) / (30 * 4);
if (!def_vol) {
switch (adc_chan) {
case ADC_CHANNEL_DCDC:
def_vol = 1100;
cal_vol = sci_adi_read(ANA_DCDC_CTRL_CAL) & 0x1f;
i = sci_adi_read(ANA_DCDC_CTRL) & 0x07;
break;
case ADC_CHANNEL_DCDCARM:
def_vol = 1200;
cal_vol = sci_adi_read(ANA_DCDCARM_CTRL_CAL) & 0x1f;
i = sci_adi_read(ANA_DCDCARM_CTRL) & 0x07;
break;
default:
goto exit;
}
if (0 != i /* + cal_vol */ )
def_vol = dcdc_ctl_vol[i];
def_vol += cal_vol * 100 / 32;
#if 0
if (0 != i + cal_vol) { /* dcdc had been adjusted in uboot-spl */
debug("%s default %dmv, from %dmv to %dmv\n",
__FUNCTION__, def_vol, adc_vol, to_vol);
goto exit;
}
#endif
}
info("%s default %dmv, from %dmv to %dmv\n", __FUNCTION__, def_vol,
adc_vol, to_vol);
cal_vol = abs(adc_vol - to_vol);
if (cal_vol > 200 /* mv */ )
goto exit;
else if (cal_vol < to_vol / 100) {
info("%s is ok\n", __FUNCTION__);
return 0;
}
ctl_vol = def_vol * to_vol / adc_vol;
for (i = 0; i < ARRAY_SIZE(dcdc_ctl_vol) - 1; i++) {
if (ctl_vol < dcdc_ctl_vol[i + 1])
break;
}
if (i >= ARRAY_SIZE(dcdc_ctl_vol) - 1)
goto exit;
cal_vol = ((ctl_vol - dcdc_ctl_vol[i]) * 32 / 100) % 32;
debug("%s cal_vol %dmv: %d, 0x%02x\n", __FUNCTION__,
dcdc_ctl_vol[i] + cal_vol * 100 / 32, i, cal_vol);
switch (adc_chan) {
case ADC_CHANNEL_DCDC:
sci_adi_raw_write(ANA_DCDC_CTRL_CAL,
cal_vol | (0x1f - cal_vol) << 8);
sci_adi_raw_write(ANA_DCDC_CTRL, i | (0x07 - i) << 4);
break;
case ADC_CHANNEL_DCDCARM:
sci_adi_raw_write(ANA_DCDCARM_CTRL_CAL,
cal_vol | (0x1f - cal_vol) << 8);
sci_adi_raw_write(ANA_DCDCARM_CTRL, i | (0x07 - i) << 4);
break;
default:
break;
}
return dcdc_ctl_vol[i] + cal_vol * 100 / 32;
exit:
info("%s failure\n", __FUNCTION__);
return -1;
}
static int sprd_rtc_probe(struct platform_device *plat_dev)
{
int err = -ENODEV;
struct resource *irq;
rtc_data = kzalloc(sizeof(*rtc_data), GFP_KERNEL);
if(IS_ERR(rtc_data)){
err = PTR_ERR(rtc_data);
return err;
};
/*ensure the rtc interrupt don't be send to Adie when there's no
*rtc alarm int occur.
*/
sci_adi_raw_write(ANA_RTC_SPG_UPD, SPRD_RTC_LOCK);
/* disable all interrupt */
sci_adi_clr(ANA_RTC_INT_EN, RTC_INT_ALL_MSK);
/* enable rtc device */
rtc_data->clk = clk_get(&plat_dev->dev, "ext_32k");
if (IS_ERR(rtc_data->clk)) {
err = PTR_ERR(rtc_data->clk);
goto kfree_data;
}
err = clk_enable(rtc_data->clk);
if (err < 0)
goto put_clk;
CLEAR_RTC_INT(RTC_INT_ALL_MSK);
rtc_data->rtc = rtc_device_register("sprd_rtc", &plat_dev->dev,
&sprd_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc_data->rtc)) {
err = PTR_ERR(rtc_data->rtc);
goto disable_clk;
}
irq = platform_get_resource(plat_dev, IORESOURCE_IRQ, 0);
if(unlikely(!irq)) {
dev_err(&plat_dev->dev, "no irq resource specified\n");
goto unregister_rtc;
}
rtc_data->irq_no = irq->start;
platform_set_drvdata(plat_dev, rtc_data);
err = request_irq(rtc_data->irq_no, rtc_interrupt_handler, 0, "sprd_rtc", rtc_data->rtc);
if(err){
printk(KERN_ERR "RTC regist irq error\n");
goto unregister_rtc;
}
sprd_creat_caliberate_attr(rtc_data->rtc->dev);
sprd_rtc_hwrst_set(1);
sprd_rtc_set_bit_spg_counter(SPG_CNT_8SECS_RESET, 1);
sprd_rtc_check_power_down(&plat_dev->dev);
sprd_rtc_open(&plat_dev->dev);//test
return 0;
unregister_rtc:
rtc_device_unregister(rtc_data->rtc);
disable_clk:
clk_disable(rtc_data->clk);
put_clk:
clk_put(rtc_data->clk);
kfree_data:
kfree(rtc_data);
return err;
}