Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 119 insertions, 0 deletions

diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
new file mode 100644
index 000000000..fcd5e4197
--- /dev/null
+++ b/arch/sh/kernel/time.c
@@ -0,0 +1,119 @@
+/*
+ *  arch/sh/kernel/time.c
+ *
+ *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
+ *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
+ *  Copyright (C) 2002 - 2009  Paul Mundt
+ *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/profile.h>
+#include <linux/timex.h>
+#include <linux/sched.h>
+#include <linux/clockchips.h>
+#include <linux/platform_device.h>
+#include <linux/smp.h>
+#include <linux/rtc.h>
+#include <asm/clock.h>
+#include <asm/rtc.h>
+
+/* Dummy RTC ops */
+static void null_rtc_get_time(struct timespec *tv)
+{
+	tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
+	tv->tv_nsec = 0;
+}
+
+static int null_rtc_set_time(const time_t secs)
+{
+	return 0;
+}
+
+void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
+int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
+
+void read_persistent_clock(struct timespec *ts)
+{
+	rtc_sh_get_time(ts);
+}
+
+#ifdef CONFIG_GENERIC_CMOS_UPDATE
+int update_persistent_clock(struct timespec now)
+{
+	return rtc_sh_set_time(now.tv_sec);
+}
+#endif
+
+static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
+{
+	struct timespec tv;
+
+	rtc_sh_get_time(&tv);
+	rtc_time_to_tm(tv.tv_sec, tm);
+	return 0;
+}
+
+static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm)
+{
+	unsigned long secs;
+
+	rtc_tm_to_time(tm, &secs);
+	if ((rtc_sh_set_time == null_rtc_set_time) ||
+	    (rtc_sh_set_time(secs) < 0))
+		return -EOPNOTSUPP;
+
+	return 0;
+}
+
+static const struct rtc_class_ops rtc_generic_ops = {
+	.read_time = rtc_generic_get_time,
+	.set_time = rtc_generic_set_time,
+};
+
+static int __init rtc_generic_init(void)
+{
+	struct platform_device *pdev;
+
+	if (rtc_sh_get_time == null_rtc_get_time)
+		return -ENODEV;
+
+	pdev = platform_device_register_data(NULL, "rtc-generic", -1,
+					     &rtc_generic_ops,
+					     sizeof(rtc_generic_ops));
+
+
+	return PTR_ERR_OR_ZERO(pdev);
+}
+device_initcall(rtc_generic_init);
+
+void (*board_time_init)(void);
+
+static void __init sh_late_time_init(void)
+{
+	/*
+	 * Make sure all compiled-in early timers register themselves.
+	 *
+	 * Run probe() for two "earlytimer" devices, these will be the
+	 * clockevents and clocksource devices respectively. In the event
+	 * that only a clockevents device is available, we -ENODEV on the
+	 * clocksource and the jiffies clocksource is used transparently
+	 * instead. No error handling is necessary here.
+	 */
+	early_platform_driver_register_all("earlytimer");
+	early_platform_driver_probe("earlytimer", 2, 0);
+}
+
+void __init time_init(void)
+{
+	if (board_time_init)
+		board_time_init();
+
+	clk_init();
+
+	late_time_init = sh_late_time_init;
+}