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authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>2009-02-24 14:04:20 +0100
committerKyle McMartin <kyle@mcmartin.ca>2009-04-02 01:05:32 +0000
commit0b5f037a4dc495f9c40eed7f076fc6c23af3359b (patch)
tree0b4f3388c2ad47ba2310e3e8c1feafcd800f2e72
parentbcd68a70cb0eee556d86d93133aa150319bd9f53 (diff)
powerpc/ps3: Add rtc-ps3
Create a real RTC driver for PS3, and unhook the deprecated ppc_md.[gs]et_rtc_time. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
-rw-r--r--arch/powerpc/include/asm/ps3.h3
-rw-r--r--arch/powerpc/platforms/ps3/os-area.c2
-rw-r--r--arch/powerpc/platforms/ps3/platform.h2
-rw-r--r--arch/powerpc/platforms/ps3/setup.c2
-rw-r--r--arch/powerpc/platforms/ps3/time.c26
-rw-r--r--drivers/rtc/Kconfig9
-rw-r--r--drivers/rtc/Makefile1
-rw-r--r--drivers/rtc/rtc-ps3.c104
8 files changed, 131 insertions, 18 deletions
diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h
index 67f1812698d2..cdb6fd814de8 100644
--- a/arch/powerpc/include/asm/ps3.h
+++ b/arch/powerpc/include/asm/ps3.h
@@ -50,6 +50,9 @@ enum ps3_param_av_multi_out {
enum ps3_param_av_multi_out ps3_os_area_get_av_multi_out(void);
+extern u64 ps3_os_area_get_rtc_diff(void);
+extern void ps3_os_area_set_rtc_diff(u64 rtc_diff);
+
/* dma routines */
enum ps3_dma_page_size {
diff --git a/arch/powerpc/platforms/ps3/os-area.c b/arch/powerpc/platforms/ps3/os-area.c
index e1c83c23b435..86e392b1b049 100644
--- a/arch/powerpc/platforms/ps3/os-area.c
+++ b/arch/powerpc/platforms/ps3/os-area.c
@@ -808,6 +808,7 @@ u64 ps3_os_area_get_rtc_diff(void)
{
return saved_params.rtc_diff;
}
+EXPORT_SYMBOL(ps3_os_area_get_rtc_diff);
/**
* ps3_os_area_set_rtc_diff - Set the rtc diff value.
@@ -823,6 +824,7 @@ void ps3_os_area_set_rtc_diff(u64 rtc_diff)
os_area_queue_work();
}
}
+EXPORT_SYMBOL(ps3_os_area_set_rtc_diff);
/**
* ps3_os_area_get_av_multi_out - Returns the default video mode.
diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
index 235c13ebacd9..136aa0637d9c 100644
--- a/arch/powerpc/platforms/ps3/platform.h
+++ b/arch/powerpc/platforms/ps3/platform.h
@@ -64,8 +64,6 @@ int ps3_set_rtc_time(struct rtc_time *time);
void __init ps3_os_area_save_params(void);
void __init ps3_os_area_init(void);
-u64 ps3_os_area_get_rtc_diff(void);
-void ps3_os_area_set_rtc_diff(u64 rtc_diff);
/* spu */
diff --git a/arch/powerpc/platforms/ps3/setup.c b/arch/powerpc/platforms/ps3/setup.c
index 3331ccbb8d38..66181821322a 100644
--- a/arch/powerpc/platforms/ps3/setup.c
+++ b/arch/powerpc/platforms/ps3/setup.c
@@ -270,8 +270,6 @@ define_machine(ps3) {
.init_IRQ = ps3_init_IRQ,
.panic = ps3_panic,
.get_boot_time = ps3_get_boot_time,
- .set_rtc_time = ps3_set_rtc_time,
- .get_rtc_time = ps3_get_rtc_time,
.set_dabr = ps3_set_dabr,
.calibrate_decr = ps3_calibrate_decr,
.progress = ps3_progress,
diff --git a/arch/powerpc/platforms/ps3/time.c b/arch/powerpc/platforms/ps3/time.c
index d0daf7d6d3b2..b178a1e66c91 100644
--- a/arch/powerpc/platforms/ps3/time.c
+++ b/arch/powerpc/platforms/ps3/time.c
@@ -19,6 +19,7 @@
*/
#include <linux/kernel.h>
+#include <linux/platform_device.h>
#include <asm/rtc.h>
#include <asm/lv1call.h>
@@ -74,23 +75,20 @@ static u64 read_rtc(void)
return rtc_val;
}
-int ps3_set_rtc_time(struct rtc_time *tm)
+unsigned long __init ps3_get_boot_time(void)
{
- u64 now = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-
- ps3_os_area_set_rtc_diff(now - read_rtc());
- return 0;
+ return read_rtc() + ps3_os_area_get_rtc_diff();
}
-void ps3_get_rtc_time(struct rtc_time *tm)
+static int __init ps3_rtc_init(void)
{
- to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
- tm->tm_year -= 1900;
- tm->tm_mon -= 1;
-}
+ struct platform_device *pdev;
-unsigned long __init ps3_get_boot_time(void)
-{
- return read_rtc() + ps3_os_area_get_rtc_diff();
+ pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ return 0;
}
+
+module_init(ps3_rtc_init);
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index fa66d10dd5a0..b072826c9ee1 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -741,4 +741,13 @@ config RTC_DRV_MV
This driver can also be built as a module. If so, the module
will be called rtc-mv.
+config RTC_DRV_PS3
+ tristate "PS3 RTC"
+ depends on PPC_PS3
+ help
+ If you say yes here you will get support for the RTC on PS3.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-ps3.
+
endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 2b022f19a6ed..6c0639a14f09 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -76,3 +76,4 @@ obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o
obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o
obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o
obj-$(CONFIG_RTC_DRV_PCF50633) += rtc-pcf50633.o
+obj-$(CONFIG_RTC_DRV_PS3) += rtc-ps3.o
diff --git a/drivers/rtc/rtc-ps3.c b/drivers/rtc/rtc-ps3.c
new file mode 100644
index 000000000000..968133ce1ee8
--- /dev/null
+++ b/drivers/rtc/rtc-ps3.c
@@ -0,0 +1,104 @@
+/*
+ * PS3 RTC Driver
+ *
+ * Copyright 2009 Sony Corporation
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+
+#include <asm/lv1call.h>
+#include <asm/ps3.h>
+
+
+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;
+}
+
+static int ps3_get_time(struct device *dev, struct rtc_time *tm)
+{
+ rtc_time_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
+ return rtc_valid_tm(tm);
+}
+
+static int ps3_set_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned long now;
+
+ rtc_tm_to_time(tm, &now);
+ ps3_os_area_set_rtc_diff(now - read_rtc());
+ return 0;
+}
+
+static const struct rtc_class_ops ps3_rtc_ops = {
+ .read_time = ps3_get_time,
+ .set_time = ps3_set_time,
+};
+
+static int __init ps3_rtc_probe(struct platform_device *dev)
+{
+ struct rtc_device *rtc;
+
+ rtc = rtc_device_register("rtc-ps3", &dev->dev, &ps3_rtc_ops,
+ THIS_MODULE);
+ if (IS_ERR(rtc))
+ return PTR_ERR(rtc);
+
+ platform_set_drvdata(dev, rtc);
+ return 0;
+}
+
+static int __exit ps3_rtc_remove(struct platform_device *dev)
+{
+ rtc_device_unregister(platform_get_drvdata(dev));
+ return 0;
+}
+
+static struct platform_driver ps3_rtc_driver = {
+ .driver = {
+ .name = "rtc-ps3",
+ .owner = THIS_MODULE,
+ },
+ .remove = __exit_p(ps3_rtc_remove),
+};
+
+static int __init ps3_rtc_init(void)
+{
+ return platform_driver_probe(&ps3_rtc_driver, ps3_rtc_probe);
+}
+
+static void __exit ps3_rtc_fini(void)
+{
+ platform_driver_unregister(&ps3_rtc_driver);
+}
+
+module_init(ps3_rtc_init);
+module_exit(ps3_rtc_fini);
+
+MODULE_AUTHOR("Sony Corporation");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ps3 RTC driver");
+MODULE_ALIAS("platform:rtc-ps3");