linux-kernel - [PATCH 2/3] rtc: s3c: Drop support for S3C2410

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Message-ID: <20250830130024.142815-5-krzysztof.kozlowski@linaro.org>
Date: Sat, 30 Aug 2025 15:00:26 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-rtc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 2/3] rtc: s3c: Drop support for S3C2410

Samsung S3C24xx family of SoCs was removed the Linux kernel in the
commit 61b7f8920b17 ("ARM: s3c: remove all s3c24xx support"), in January
2023.  There are no in-kernel users of remaining S3C24xx compatibles.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/rtc/rtc-s3c.c | 49 ++-----------------------------------------
 drivers/rtc/rtc-s3c.h |  3 ---
 2 files changed, 2 insertions(+), 50 deletions(-)

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 79b2a16f15ad..291c0ccb0acd 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -331,7 +331,7 @@ static const struct rtc_class_ops s3c_rtcops = {
 	.alarm_irq_enable = s3c_rtc_setaie,
 };
 
-static void s3c24xx_rtc_enable(struct s3c_rtc *info)
+static void s3c6410_rtc_enable(struct s3c_rtc *info)
 {
 	unsigned int con, tmp;
 
@@ -361,19 +361,6 @@ static void s3c24xx_rtc_enable(struct s3c_rtc *info)
 	}
 }
 
-static void s3c24xx_rtc_disable(struct s3c_rtc *info)
-{
-	unsigned int con;
-
-	con = readw(info->base + S3C2410_RTCCON);
-	con &= ~S3C2410_RTCCON_RTCEN;
-	writew(con, info->base + S3C2410_RTCCON);
-
-	con = readb(info->base + S3C2410_TICNT);
-	con &= ~S3C2410_TICNT_ENABLE;
-	writeb(con, info->base + S3C2410_TICNT);
-}
-
 static void s3c6410_rtc_disable(struct s3c_rtc *info)
 {
 	unsigned int con;
@@ -538,53 +525,21 @@ static int s3c_rtc_resume(struct device *dev)
 #endif
 static SIMPLE_DEV_PM_OPS(s3c_rtc_pm_ops, s3c_rtc_suspend, s3c_rtc_resume);
 
-static void s3c24xx_rtc_irq(struct s3c_rtc *info, int mask)
-{
-	rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
-}
-
 static void s3c6410_rtc_irq(struct s3c_rtc *info, int mask)
 {
 	rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
 	writeb(mask, info->base + S3C2410_INTP);
 }
 
-static const struct s3c_rtc_data s3c2410_rtc_data = {
-	.irq_handler		= s3c24xx_rtc_irq,
-	.enable			= s3c24xx_rtc_enable,
-	.disable		= s3c24xx_rtc_disable,
-};
-
-static const struct s3c_rtc_data s3c2416_rtc_data = {
-	.irq_handler		= s3c24xx_rtc_irq,
-	.enable			= s3c24xx_rtc_enable,
-	.disable		= s3c24xx_rtc_disable,
-};
-
-static const struct s3c_rtc_data s3c2443_rtc_data = {
-	.irq_handler		= s3c24xx_rtc_irq,
-	.enable			= s3c24xx_rtc_enable,
-	.disable		= s3c24xx_rtc_disable,
-};
-
 static const struct s3c_rtc_data s3c6410_rtc_data = {
 	.needs_src_clk		= true,
 	.irq_handler		= s3c6410_rtc_irq,
-	.enable			= s3c24xx_rtc_enable,
+	.enable			= s3c6410_rtc_enable,
 	.disable		= s3c6410_rtc_disable,
 };
 
 static const __maybe_unused struct of_device_id s3c_rtc_dt_match[] = {
 	{
-		.compatible = "samsung,s3c2410-rtc",
-		.data = &s3c2410_rtc_data,
-	}, {
-		.compatible = "samsung,s3c2416-rtc",
-		.data = &s3c2416_rtc_data,
-	}, {
-		.compatible = "samsung,s3c2443-rtc",
-		.data = &s3c2443_rtc_data,
-	}, {
 		.compatible = "samsung,s3c6410-rtc",
 		.data = &s3c6410_rtc_data,
 	}, {
diff --git a/drivers/rtc/rtc-s3c.h b/drivers/rtc/rtc-s3c.h
index 44e9d6c9428f..11d7a1255ce4 100644
--- a/drivers/rtc/rtc-s3c.h
+++ b/drivers/rtc/rtc-s3c.h
@@ -21,9 +21,6 @@
 #define S3C2443_RTCCON_TICSEL	(1 << 4)
 #define S3C64XX_RTCCON_TICEN	(1 << 8)
 
-#define S3C2410_TICNT		S3C2410_RTCREG(0x44)
-#define S3C2410_TICNT_ENABLE	(1 << 7)
-
 #define S3C2410_RTCALM		S3C2410_RTCREG(0x50)
 #define S3C2410_RTCALM_ALMEN	(1 << 6)
 #define S3C2410_RTCALM_YEAREN	(1 << 5)
-- 
2.48.1