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authorAlim Akhtar <alim.akhtar@samsung.com>2015-11-20 16:07:53 +0530
committerLee Jones <lee.jones@linaro.org>2015-11-23 10:34:38 +0000
commita65e5efa7c5faa8c320fe56cc351d47fcd006749 (patch)
tree57acd43fae9eed4aba532efd44887bbb516d67f2 /drivers/rtc/rtc-s5m.c
parent51af20675800ffbd97bd48363a06e00f83de44c4 (diff)
rtc: s5m.c: Add support for S2MPS15 RTC
RTC found in s2mps15 is almost same as one found on s2mps13 with few differences in RTC_UPDATE register fields, like: 1> Bit[4] and Bit[1] are reversed - On s2mps13 WUDR -> bit[4], AUDR -> bit[1] - On s2mps15 WUDR -> bit[1], AUDR -> bit[4] 2> In case of s2mps13, for alarm register, need to set both WDUR and ADUR high, whereas for s2mps15 only set AUDR to high. 3> On s2mps15, WUDR, RUDR and AUDR functions should never be used at the same time. This patch add required changes to enable s2mps15 rtc timer. Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/rtc/rtc-s5m.c')
-rw-r--r--drivers/rtc/rtc-s5m.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index f2504b4eef34..0d68a85dd429 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -188,6 +188,7 @@ static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info,
ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val);
val &= S5M_ALARM0_STATUS;
break;
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2,
@@ -219,9 +220,22 @@ static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info)
return ret;
}
- data |= info->regs->rtc_udr_mask;
- if (info->device_type == S5M8763X || info->device_type == S5M8767X)
- data |= S5M_RTC_TIME_EN_MASK;
+ switch (info->device_type) {
+ case S5M8763X:
+ case S5M8767X:
+ data |= info->regs->rtc_udr_mask | S5M_RTC_TIME_EN_MASK;
+ case S2MPS15X:
+ /* As per UM, for write time register, set WUDR bit to high */
+ data |= S2MPS15_RTC_WUDR_MASK;
+ break;
+ case S2MPS14X:
+ case S2MPS13X:
+ data |= info->regs->rtc_udr_mask;
+ break;
+ default:
+ return -EINVAL;
+ }
+
ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data);
if (ret < 0) {
@@ -252,6 +266,11 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
case S5M8767X:
data &= ~S5M_RTC_TIME_EN_MASK;
break;
+ case S2MPS15X:
+ /* As per UM, for write alarm, set A_UDR(bit[4]) to high
+ * rtc_udr_mask above sets bit[4]
+ */
+ break;
case S2MPS14X:
data |= S2MPS_RTC_RUDR_MASK;
break;
@@ -317,7 +336,8 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
u8 data[info->regs->regs_count];
int ret;
- if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) {
+ if (info->device_type == S2MPS15X || info->device_type == S2MPS14X ||
+ info->device_type == S2MPS13X) {
ret = regmap_update_bits(info->regmap,
info->regs->rtc_udr_update,
S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK);
@@ -339,6 +359,7 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
break;
case S5M8767X:
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode);
@@ -366,6 +387,7 @@ static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm)
s5m8763_tm_to_data(tm, data);
break;
case S5M8767X:
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
ret = s5m8767_tm_to_data(tm, data);
@@ -414,6 +436,7 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
break;
case S5M8767X:
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
@@ -463,6 +486,7 @@ static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)
break;
case S5M8767X:
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
for (i = 0; i < info->regs->regs_count; i++)
@@ -508,6 +532,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info)
break;
case S5M8767X:
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
data[RTC_SEC] |= ALARM_ENABLE_MASK;
@@ -548,6 +573,7 @@ static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
break;
case S5M8767X:
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
s5m8767_tm_to_data(&alrm->time, data);
@@ -631,6 +657,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2);
break;
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
@@ -679,6 +706,7 @@ static int s5m_rtc_probe(struct platform_device *pdev)
return -ENOMEM;
switch (platform_get_device_id(pdev)->driver_data) {
+ case S2MPS15X:
case S2MPS14X:
case S2MPS13X:
regmap_cfg = &s2mps14_rtc_regmap_config;
@@ -805,6 +833,7 @@ static const struct platform_device_id s5m_rtc_id[] = {
{ "s5m-rtc", S5M8767X },
{ "s2mps13-rtc", S2MPS13X },
{ "s2mps14-rtc", S2MPS14X },
+ { "s2mps15-rtc", S2MPS15X },
{ },
};
MODULE_DEVICE_TABLE(platform, s5m_rtc_id);