linux-kernel - [PATCH v1 6/7] rtc: s5m: add support for S2MPS16 RTC

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Message-ID: <20250914124227.2619925-7-ivo.ivanov.ivanov1@gmail.com>
Date: Sun, 14 Sep 2025 15:42:26 +0300
From: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	André Draszik <andre.draszik@...aro.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Lee Jones <lee@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: linux-samsung-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-rtc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 6/7] rtc: s5m: add support for S2MPS16 RTC

Add support for Samsung's S2MPS16 PMIC RTC, which has pretty much
identical functionality to the existing S2MPS15 support, with the
difference being the ST2 register.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
---
 drivers/rtc/rtc-s5m.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index a7220b4d0..910248731 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -18,6 +18,7 @@
 #include <linux/mfd/samsung/irq.h>
 #include <linux/mfd/samsung/rtc.h>
 #include <linux/mfd/samsung/s2mps14.h>
+#include <linux/mfd/samsung/s2mps16.h>
 
 /*
  * Maximum number of retries for checking changes in UDR field
@@ -254,6 +255,11 @@ static int s5m_check_pending_alarm_interrupt(struct s5m_rtc_info *info,
 		ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val);
 		val &= S5M_ALARM0_STATUS;
 		break;
+	case S2MPS16X:
+		ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS16_REG_ST2,
+				  &val);
+		val &= S2MPS_ALARM0_STATUS;
+		break;
 	case S2MPG10:
 	case S2MPS15X:
 	case S2MPS14X:
@@ -303,6 +309,7 @@ static int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
 		udr_mask |= S5M_RTC_TIME_EN_MASK;
 		break;
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -354,6 +361,7 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	switch (info->device_type) {
 	case S5M8767X:
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -378,6 +386,7 @@ static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm)
 	switch (info->device_type) {
 	case S5M8767X:
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -416,6 +425,7 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	switch (info->device_type) {
 	case S5M8767X:
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -455,6 +465,7 @@ static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)
 	switch (info->device_type) {
 	case S5M8767X:
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -494,6 +505,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info)
 	switch (info->device_type) {
 	case S5M8767X:
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -532,6 +544,7 @@ static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	switch (info->device_type) {
 	case S5M8767X:
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -613,6 +626,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
 		break;
 
 	case S2MPG10:
+	case S2MPS16X:
 	case S2MPS15X:
 	case S2MPS14X:
 	case S2MPS13X:
@@ -680,6 +694,7 @@ static int s5m_rtc_probe(struct platform_device *pdev)
 		struct i2c_client *i2c;
 
 		switch (device_type) {
+		case S2MPS16X:
 		case S2MPS15X:
 			regmap_cfg = &s2mps14_rtc_regmap_config;
 			info->regs = &s2mps15_rtc_regs;
@@ -817,6 +832,7 @@ static const struct platform_device_id s5m_rtc_id[] = {
 	{ "s2mps13-rtc",	S2MPS13X },
 	{ "s2mps14-rtc",	S2MPS14X },
 	{ "s2mps15-rtc",	S2MPS15X },
+	{ "s2mps16-rtc",	S2MPS16X },
 	{ },
 };
 MODULE_DEVICE_TABLE(platform, s5m_rtc_id);
-- 
2.43.0