diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/rtc.h | 78 | ||||
| -rw-r--r-- | arch/powerpc/kernel/time.c | 29 | ||||
| -rw-r--r-- | arch/powerpc/platforms/Kconfig | 11 | ||||
| -rw-r--r-- | arch/powerpc/platforms/ps3/time.c | 2 |
4 files changed, 40 insertions, 80 deletions
diff --git a/arch/powerpc/include/asm/rtc.h b/arch/powerpc/include/asm/rtc.h deleted file mode 100644 index f5802926b6c0..000000000000 --- a/arch/powerpc/include/asm/rtc.h +++ /dev/null @@ -1,78 +0,0 @@ -/* - * Real-time clock definitions and interfaces - * - * Author: Tom Rini <trini@mvista.com> - * - * 2002 (c) MontaVista, Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - * - * Based on: - * include/asm-m68k/rtc.h - * - * Copyright Richard Zidlicky - * implementation details for genrtc/q40rtc driver - * - * And the old drivers/macintosh/rtc.c which was heavily based on: - * Linux/SPARC Real Time Clock Driver - * Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu) - * - * With additional work by Paul Mackerras and Franz Sirl. - */ - -#ifndef __ASM_POWERPC_RTC_H__ -#define __ASM_POWERPC_RTC_H__ - -#ifdef __KERNEL__ - -#include <linux/rtc.h> - -#include <asm/machdep.h> -#include <asm/time.h> - -#define RTC_PIE 0x40 /* periodic interrupt enable */ -#define RTC_AIE 0x20 /* alarm interrupt enable */ -#define RTC_UIE 0x10 /* update-finished interrupt enable */ - -/* some dummy definitions */ -#define RTC_BATT_BAD 0x100 /* battery bad */ -#define RTC_SQWE 0x08 /* enable square-wave output */ -#define RTC_DM_BINARY 0x04 /* all time/date values are BCD if clear */ -#define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */ -#define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */ - -static inline unsigned int get_rtc_time(struct rtc_time *time) -{ - if (ppc_md.get_rtc_time) - ppc_md.get_rtc_time(time); - return RTC_24H; -} - -/* Set the current date and time in the real time clock. */ -static inline int set_rtc_time(struct rtc_time *time) -{ - if (ppc_md.set_rtc_time) - return ppc_md.set_rtc_time(time); - return -EINVAL; -} - -static inline unsigned int get_rtc_ss(void) -{ - struct rtc_time h; - - get_rtc_time(&h); - return h.tm_sec; -} - -static inline int get_rtc_pll(struct rtc_pll_info *pll) -{ - return -EINVAL; -} -static inline int set_rtc_pll(struct rtc_pll_info *pll) -{ - return -EINVAL; -} - -#endif /* __KERNEL__ */ -#endif /* __ASM_POWERPC_RTC_H__ */ diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 4e7759c8ca30..3efbedefba6a 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -56,6 +56,7 @@ #include <linux/irq_work.h> #include <linux/clk-provider.h> #include <linux/suspend.h> +#include <linux/rtc.h> #include <asm/trace.h> #include <asm/io.h> @@ -1159,6 +1160,29 @@ void calibrate_delay(void) loops_per_jiffy = tb_ticks_per_jiffy; } +#if IS_ENABLED(CONFIG_RTC_DRV_GENERIC) +static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm) +{ + ppc_md.get_rtc_time(tm); + return rtc_valid_tm(tm); +} + +static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm) +{ + if (!ppc_md.set_rtc_time) + return -EOPNOTSUPP; + + if (ppc_md.set_rtc_time(tm) < 0) + return -EOPNOTSUPP; + + return 0; +} + +static const struct rtc_class_ops rtc_generic_ops = { + .read_time = rtc_generic_get_time, + .set_time = rtc_generic_set_time, +}; + static int __init rtc_init(void) { struct platform_device *pdev; @@ -1166,9 +1190,12 @@ static int __init rtc_init(void) if (!ppc_md.get_rtc_time) return -ENODEV; - pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0); + pdev = platform_device_register_data(NULL, "rtc-generic", -1, + &rtc_generic_ops, + sizeof(rtc_generic_ops)); return PTR_ERR_OR_ZERO(pdev); } device_initcall(rtc_init); +#endif diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index 3663f71fd913..fbdae8377b71 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -321,6 +321,17 @@ config OF_RTC Uses information from the OF or flattened device tree to instantiate platform devices for direct mapped RTC chips like the DS1742 or DS1743. +config GEN_RTC + bool "Use the platform RTC operations from user space" + select RTC_CLASS + select RTC_DRV_GENERIC + help + This option provides backwards compatibility with the old gen_rtc.ko + module that was traditionally used for old PowerPC machines. + Platforms should migrate to enabling the RTC_DRV_GENERIC by hand + replacing their get_rtc_time/set_rtc_time callbacks with + a proper RTC device driver. + config SIMPLE_GPIO bool "Support for simple, memory-mapped GPIO controllers" depends on PPC diff --git a/arch/powerpc/platforms/ps3/time.c b/arch/powerpc/platforms/ps3/time.c index 791c6142c4a7..11b45b58c81b 100644 --- a/arch/powerpc/platforms/ps3/time.c +++ b/arch/powerpc/platforms/ps3/time.c @@ -20,9 +20,9 @@ #include <linux/kernel.h> #include <linux/platform_device.h> +#include <linux/rtc.h> #include <asm/firmware.h> -#include <asm/rtc.h> #include <asm/lv1call.h> #include <asm/ps3.h> |