From 0b5f037a4dc495f9c40eed7f076fc6c23af3359b Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 24 Feb 2009 14:04:20 +0100 Subject: 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 Acked-by: Alessandro Zummo Acked-by: Geoff Levand Signed-off-by: Kyle McMartin --- drivers/rtc/Kconfig | 9 +++++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-ps3.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 114 insertions(+) create mode 100644 drivers/rtc/rtc-ps3.c (limited to 'drivers') diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index fa66d10dd5a..b072826c9ee 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 2b022f19a6e..6c0639a14f0 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 00000000000..968133ce1ee --- /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 . + */ + +#include +#include +#include +#include + +#include +#include + + +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"); -- cgit v1.2.3