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@linaro.org>
Link: https://lore.kernel.org/r/20250830130024.142815-5-krzysztof.kozlowski@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 79b2a16f15ad9ffb6e2daadb8250c298f6b393f7..291c0ccb0acd259a0222bf4e60f5bb7fe6cf1baf 100644 (file)
--- 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 44e9d6c9428fc1e5b862262359de43ae2554ab08..11d7a1255ce4e8eeeefdbd16e5d74d94cb621f00 100644 (file)
--- 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)