MIPS: Loongson: Define rtc device on MC146818-equipped systems
Arnaud Patard [Tue, 1 Jun 2010 22:39:54 +0000 (00:39 +0200)]
This patch declare the rtc device present on systems with clock compatible
with the mc146818 and handled by rtc-cmos.  Introduce a new Kconfig entry
because there are some systems without rtc_cmos compatible clock.

Signed-off-by: Arnaud Patard <apatard@mandriva.com>
To: linux-mips@linux-mips.org
Cc: aba@not.so.argh.org
Patchwork: http://patchwork.linux-mips.org/patch/1320/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/loongson/Kconfig
arch/mips/loongson/common/Makefile
arch/mips/loongson/common/rtc.c [new file with mode: 0644]

index 3df1967..c97ca69 100644 (file)
@@ -23,6 +23,7 @@ config LEMOTE_FULOONG2E
        select GENERIC_HARDIRQS_NO__DO_IRQ
        select GENERIC_ISA_DMA_SUPPORT_BROKEN
        select CPU_HAS_WB
+       select LOONGSON_MC146818
        help
          Lemote Fuloong(2e) mini-PC board based on the Chinese Loongson-2E CPU and
          an FPGA northbridge
@@ -51,6 +52,7 @@ config LEMOTE_MACH2F
        select SYS_SUPPORTS_64BIT_KERNEL
        select SYS_SUPPORTS_HIGHMEM
        select SYS_SUPPORTS_LITTLE_ENDIAN
+       select LOONGSON_MC146818
        help
          Lemote Loongson 2F family machines utilize the 2F revision of
          Loongson processor and the AMD CS5536 south bridge.
@@ -83,3 +85,7 @@ config LOONGSON_UART_BASE
        bool
        default y
        depends on EARLY_PRINTK || SERIAL_8250
+
+config LOONGSON_MC146818
+       bool
+       default n
index cdd2e81..e526488 100644 (file)
@@ -12,6 +12,7 @@ obj-$(CONFIG_GENERIC_GPIO) += gpio.o
 obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
 obj-$(CONFIG_SERIAL_8250) += serial.o
 obj-$(CONFIG_LOONGSON_UART_BASE) += uart_base.o
+obj-$(CONFIG_LOONGSON_MC146818) += rtc.o
 
 #
 # Enable CS5536 Virtual Support Module(VSM) to virtulize the PCI configure
diff --git a/arch/mips/loongson/common/rtc.c b/arch/mips/loongson/common/rtc.c
new file mode 100644 (file)
index 0000000..a90d87c
--- /dev/null
@@ -0,0 +1,43 @@
+/*
+ *  Lemote Fuloong platform support
+ *
+ *  Copyright(c) 2010 Arnaud Patard <apatard@mandriva.com>
+ *
+ *  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/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mc146818rtc.h>
+
+struct resource loongson_rtc_resources[] = {
+       {
+               .start  = RTC_PORT(0),
+               .end    = RTC_PORT(1),
+               .flags  = IORESOURCE_IO,
+       }, {
+               .start  = RTC_IRQ,
+               .end    = RTC_IRQ,
+               .flags  = IORESOURCE_IRQ,
+       }
+};
+
+static struct platform_device loongson_rtc_device = {
+       .name           = "rtc_cmos",
+       .id             = -1,
+       .resource       = loongson_rtc_resources,
+       .num_resources  = ARRAY_SIZE(loongson_rtc_resources),
+};
+
+
+static int __init loongson_rtc_platform_init(void)
+{
+       platform_device_register(&loongson_rtc_device);
+       return 0;
+}
+
+device_initcall(loongson_rtc_platform_init);