Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / platforms / ps3 / time.c

diff --git a/kernel/arch/powerpc/platforms/ps3/time.c b/kernel/arch/powerpc/platforms/ps3/time.c
new file mode 100644 (file)
index 0000000..ce73ce8
--- /dev/null
+++ b/kernel/arch/powerpc/platforms/ps3/time.c
@@ -0,0 +1,96 @@
+/*
+ *  PS3 time and rtc routines.
+ *
+ *  Copyright (C) 2006 Sony Computer Entertainment Inc.
+ *  Copyright 2006 Sony Corp.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <asm/firmware.h>
+#include <asm/rtc.h>
+#include <asm/lv1call.h>
+#include <asm/ps3.h>
+
+#include "platform.h"
+
+#define dump_tm(_a) _dump_tm(_a, __func__, __LINE__)
+static void _dump_tm(const struct rtc_time *tm, const char* func, int line)
+{
+       pr_debug("%s:%d tm_sec  %d\n", func, line, tm->tm_sec);
+       pr_debug("%s:%d tm_min  %d\n", func, line, tm->tm_min);
+       pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour);
+       pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday);
+       pr_debug("%s:%d tm_mon  %d\n", func, line, tm->tm_mon);
+       pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year);
+       pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday);
+}
+
+#define dump_time(_a) _dump_time(_a, __func__, __LINE__)
+static void __maybe_unused _dump_time(int time, const char *func,
+       int line)
+{
+       struct rtc_time tm;
+
+       to_tm(time, &tm);
+
+       pr_debug("%s:%d time    %d\n", func, line, time);
+       _dump_tm(&tm, func, line);
+}
+
+void __init ps3_calibrate_decr(void)
+{
+       int result;
+       u64 tmp;
+
+       result = ps3_repository_read_be_tb_freq(0, &tmp);
+       BUG_ON(result);
+
+       ppc_tb_freq = tmp;
+       ppc_proc_freq = ppc_tb_freq * 40;
+}
+
+static u64 read_rtc(void)
+{
+       int result;
+       u64 rtc_val;
+       u64 tb_val;
+
+       result = lv1_get_rtc(&rtc_val, &tb_val);
+       BUG_ON(result);
+
+       return rtc_val;
+}
+
+unsigned long __init ps3_get_boot_time(void)
+{
+       return read_rtc() + ps3_os_area_get_rtc_diff();
+}
+
+static int __init ps3_rtc_init(void)
+{
+       struct platform_device *pdev;
+
+       if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+               return -ENODEV;
+
+       pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0);
+
+       return PTR_ERR_OR_ZERO(pdev);
+}
+
+module_init(ps3_rtc_init);