diff options
| -rw-r--r-- | arch/powerpc/boot/dts/ebony.dts | 5 | ||||
| -rw-r--r-- | arch/powerpc/boot/dts/walnut.dts | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/40x/walnut.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/44x/Kconfig | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/44x/ebony.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/Kconfig | 6 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/of_rtc.c | 59 | ||||
| -rw-r--r-- | include/asm-powerpc/of_platform.h | 2 |
9 files changed, 78 insertions, 4 deletions
diff --git a/arch/powerpc/boot/dts/ebony.dts b/arch/powerpc/boot/dts/ebony.dts index f8790c4747d..7aad135a44b 100644 --- a/arch/powerpc/boot/dts/ebony.dts +++ b/arch/powerpc/boot/dts/ebony.dts @@ -158,9 +158,10 @@ }; }; - ds1743@1,0 { + nvram@1,0 { /* NVRAM & RTC */ - compatible = "ds1743"; + compatible = "ds1743-nvram"; + #bytes = <2000>; reg = <1 0 2000>; }; diff --git a/arch/powerpc/boot/dts/walnut.dts b/arch/powerpc/boot/dts/walnut.dts index 0e3825e599d..dcc21b0438e 100644 --- a/arch/powerpc/boot/dts/walnut.dts +++ b/arch/powerpc/boot/dts/walnut.dts @@ -175,9 +175,10 @@ }; }; - ds1743@1,0 { + nvram@1,0 { /* NVRAM and RTC */ - compatible = "ds1743"; + compatible = "ds1743-nvram"; + #bytes = <2000>; reg = <1 0 2000>; }; diff --git a/arch/powerpc/platforms/40x/walnut.c b/arch/powerpc/platforms/40x/walnut.c index f115b6dbf5a..5d9edd917f9 100644 --- a/arch/powerpc/platforms/40x/walnut.c +++ b/arch/powerpc/platforms/40x/walnut.c @@ -36,6 +36,7 @@ static __initdata struct of_device_id walnut_of_bus[] = { static int __init walnut_device_probe(void) { of_platform_bus_probe(NULL, walnut_of_bus, NULL); + of_instantiate_rtc(); return 0; } diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index d2480130534..c3e4e8c3c46 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -13,6 +13,7 @@ config EBONY default y select 440GP select PCI + select OF_RTC help This option enables support for the IBM PPC440GP evaluation board. diff --git a/arch/powerpc/platforms/44x/ebony.c b/arch/powerpc/platforms/44x/ebony.c index 481a016e153..1a8d467bff8 100644 --- a/arch/powerpc/platforms/44x/ebony.c +++ b/arch/powerpc/platforms/44x/ebony.c @@ -18,6 +18,7 @@ #include <linux/init.h> #include <linux/of_platform.h> +#include <linux/rtc.h> #include <asm/machdep.h> #include <asm/prom.h> @@ -38,6 +39,7 @@ static __initdata struct of_device_id ebony_of_bus[] = { static int __init ebony_device_probe(void) { of_platform_bus_probe(NULL, ebony_of_bus, NULL); + of_instantiate_rtc(); return 0; } diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index 2cec34314d2..4286664741d 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -321,6 +321,12 @@ config FSL_ULI1575 config CPM bool +config OF_RTC + bool + help + Uses information from the OF or flattened device tree to instatiate + platform devices for direct mapped RTC chips like the DS1742 or DS1743. + source "arch/powerpc/sysdev/bestcomm/Kconfig" endmenu diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index f17e7b885f6..702916bf28f 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_PPC_I8259) += i8259.o obj-$(CONFIG_IPIC) += ipic.o obj-$(CONFIG_4xx) += uic.o obj-$(CONFIG_XILINX_VIRTEX) += xilinx_intc.o +obj-$(CONFIG_OF_RTC) += of_rtc.o ifeq ($(CONFIG_PCI),y) obj-$(CONFIG_4xx) += ppc4xx_pci.o endif diff --git a/arch/powerpc/sysdev/of_rtc.c b/arch/powerpc/sysdev/of_rtc.c new file mode 100644 index 00000000000..3d54450640c --- /dev/null +++ b/arch/powerpc/sysdev/of_rtc.c @@ -0,0 +1,59 @@ +/* + * Instantiate mmio-mapped RTC chips based on device tree information + * + * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM 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; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/init.h> +#include <linux/of_platform.h> + +static __initdata struct { + const char *compatible; + char *plat_name; +} of_rtc_table[] = { + { "ds1743-nvram", "rtc-ds1742" }, +}; + +void __init of_instantiate_rtc(void) +{ + struct device_node *node; + int err; + int i; + + for (i = 0; i < ARRAY_SIZE(of_rtc_table); i++) { + char *plat_name = of_rtc_table[i].plat_name; + + for_each_compatible_node(node, NULL, + of_rtc_table[i].compatible) { + struct resource *res; + + res = kmalloc(sizeof(*res), GFP_KERNEL); + if (!res) { + printk(KERN_ERR "OF RTC: Out of memory " + "allocating resource structure for %s\n", + node->full_name); + continue; + } + + err = of_address_to_resource(node, 0, res); + if (err) { + printk(KERN_ERR "OF RTC: Error " + "translating resources for %s\n", + node->full_name); + continue; + } + + printk(KERN_INFO "OF_RTC: %s is a %s @ 0x%llx-0x%llx\n", + node->full_name, plat_name, + (unsigned long long)res->start, + (unsigned long long)res->end); + platform_device_register_simple(plat_name, -1, res, 1); + } + } +} diff --git a/include/asm-powerpc/of_platform.h b/include/asm-powerpc/of_platform.h index 1bce5efe1de..18659ef7213 100644 --- a/include/asm-powerpc/of_platform.h +++ b/include/asm-powerpc/of_platform.h @@ -37,4 +37,6 @@ extern int of_platform_bus_probe(struct device_node *root, extern struct of_device *of_find_device_by_phandle(phandle ph); +extern void of_instantiate_rtc(void); + #endif /* _ASM_POWERPC_OF_PLATFORM_H */ |