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authorGeoff Levand <geoffrey.levand@am.sony.com>2006-11-23 00:46:51 +0100
committerPaul Mackerras <paulus@samba.org>2006-12-04 20:40:42 +1100
commitf58a9d171a346afb1b09190427e6c28c6118703e (patch)
treec58029f610ba1e7a8680d09a8cdbdb737dbc166b /arch/powerpc/platforms/ps3/time.c
parenta985239bdf017e00e985c3a31149d6ae128fdc5f (diff)
downloadlinux-f58a9d171a346afb1b09190427e6c28c6118703e.tar.bz2
[POWERPC] ps3: add support for ps3 platform
Adds the core platform support for the PS3 game console and other devices using the PS3 hypervisor. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Diffstat (limited to 'arch/powerpc/platforms/ps3/time.c')
-rw-r--r--arch/powerpc/platforms/ps3/time.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/ps3/time.c b/arch/powerpc/platforms/ps3/time.c
new file mode 100644
index 000000000000..1bae8b19b363
--- /dev/null
+++ b/arch/powerpc/platforms/ps3/time.c
@@ -0,0 +1,104 @@
+/*
+ * 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 <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 __attribute__ ((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);
+}
+
+/**
+ * rtc_shift - Difference in seconds between 1970 and the ps3 rtc value.
+ */
+
+static s64 rtc_shift;
+
+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;
+
+ rtc_shift = ps3_os_area_rtc_diff();
+}
+
+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;
+}
+
+int ps3_set_rtc_time(struct rtc_time *tm)
+{
+ u64 now = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ rtc_shift = now - read_rtc();
+ return 0;
+}
+
+void ps3_get_rtc_time(struct rtc_time *tm)
+{
+ to_tm(read_rtc() + rtc_shift, tm);
+ tm->tm_year -= 1900;
+ tm->tm_mon -= 1;
+}
+
+unsigned long __init ps3_get_boot_time(void)
+{
+ return read_rtc() + rtc_shift;
+}