diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 09:51:35 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 09:51:35 -0700 |
commit | bad6a5c08c119572c888d5df2bd7691a4da6b9e8 (patch) | |
tree | 7070d6c17659332caad8f3d8f38b51855b3f05c4 /drivers/rtc/rtc-ps3.c | |
parent | 03c3fa0a3bf48dcb024263a9ea41daecacbc6efa (diff) | |
parent | 0b5f037a4dc495f9c40eed7f076fc6c23af3359b (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/rtc-parisc
* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/rtc-parisc:
powerpc/ps3: Add rtc-ps3
powerpc: Hook up rtc-generic, and kill rtc-ppc
m68k: Hook up rtc-generic
parisc: rtc: Rename rtc-parisc to rtc-generic
parisc: rtc: Add missing module alias
parisc: rtc: platform_driver_probe() fixups
parisc: rtc: get_rtc_time() returns unsigned int
Diffstat (limited to 'drivers/rtc/rtc-ps3.c')
-rw-r--r-- | drivers/rtc/rtc-ps3.c | 104 |
1 files changed, 104 insertions, 0 deletions
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 <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"); |