Add OMAP RTC driver

Adds OMAP RTC driver.
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/char/Kconfig

@@ -761,6 +761,11 @@ config GEN_RTC_X
 config EFI_RTC
 	bool "EFI Real Time Clock Services"
 	depends on IA64
+config OMAP_RTC
+	bool "TI OMAP Real Time Clock"
+	depends on ARCH_OMAP1510 || ARCH_OMAP16XX || ARCH_OMAP730
+	help
+	  Support for TI OMAP RTC
 
 config DS1302
 	tristate "DS1302 RTC support"

drivers/char/Makefile

@@ -65,6 +65,7 @@ obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o
 obj-$(CONFIG_DS1302) += ds1302.o
 obj-$(CONFIG_S3C2410_RTC) += s3c2410-rtc.o
 obj-$(CONFIG_RTC_VR41XX) += vr41xx_rtc.o
+obj-$(CONFIG_OMAP_RTC)+= omap-rtc.o
 ifeq ($(CONFIG_GENERIC_NVRAM),y)
   obj-$(CONFIG_NVRAM) += generic_nvram.o
 else

drivers/char/omap-rtc.h

+/*
+ *  TI OMAP Real Time Clock header file
+ *
+ *  Copyright (C) 2003 TI
+ *
+ *  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.
+ *
+ */
+
+#define OMAP_RTC_BASE			0xfffb4800
+#define OMAP_RTC_SIZE			128
+
+#define OMAP_RTC_VIRT_BASE		IO_ADDRESS(OMAP_RTC_BASE)
+
+/*
+ * Real-Time Clock
+ */
+
+#define OMAP_RTC_SECONDS_REG            (OMAP_RTC_BASE + 0x00)
+#define OMAP_RTC_MINUTES_REG            (OMAP_RTC_BASE + 0x04)
+#define OMAP_RTC_HOURS_REG              (OMAP_RTC_BASE + 0x08)
+#define OMAP_RTC_DAYS_REG               (OMAP_RTC_BASE + 0x0C)
+#define OMAP_RTC_MONTHS_REG             (OMAP_RTC_BASE + 0x10)
+#define OMAP_RTC_YEARS_REG              (OMAP_RTC_BASE + 0x14)
+#define OMAP_RTC_WEEKS_REG              (OMAP_RTC_BASE + 0x18)
+#define OMAP_RTC_ALARM_SECONDS_REG      (OMAP_RTC_BASE + 0x20)
+#define OMAP_RTC_ALARM_MINUTES_REG      (OMAP_RTC_BASE + 0x24)
+#define OMAP_RTC_ALARM_HOURS_REG        (OMAP_RTC_BASE + 0x28)
+#define OMAP_RTC_ALARM_DAYS_REG         (OMAP_RTC_BASE + 0x2c)
+#define OMAP_RTC_ALARM_MONTHS_REG       (OMAP_RTC_BASE + 0x30)
+#define OMAP_RTC_ALARM_YEARS_REG        (OMAP_RTC_BASE + 0x34)
+#define OMAP_RTC_CTRL_REG               (OMAP_RTC_BASE + 0x40)
+#define OMAP_RTC_STATUS_REG             (OMAP_RTC_BASE + 0x44)
+#define OMAP_RTC_INTERRUPTS_REG         (OMAP_RTC_BASE + 0x48)
+#define OMAP_RTC_COMP_LSB_REG           (OMAP_RTC_BASE + 0x4c)
+#define OMAP_RTC_COMP_MSB_REG           (OMAP_RTC_BASE + 0x50)
+
+/* RTC Control Register bit fields: */
+
+#define OMAP_RTC_CTRL_STOP              (1<<0)
+
+/* RTC Status Register bit fields: */
+
+#define OMAP_RTC_STATUS_POWER_UP        (1<<7)
+#define OMAP_RTC_STATUS_ALARM           (1<<6)
+#define OMAP_RTC_STATUS_1D_EVENT        (1<<5)
+#define OMAP_RTC_STATUS_1H_EVENT        (1<<4)
+#define OMAP_RTC_STATUS_1M_EVENT        (1<<3)
+#define OMAP_RTC_STATUS_1S_EVENT        (1<<2)
+#define OMAP_RTC_STATUS_RUN             (1<<1)
+#define OMAP_RTC_STATUS_BUSY            (1<<0)
+
+/* RTC Interrupt Register bit fields: */
+
+#define OMAP_RTC_INTERRUPTS_IT_ALARM    (1<<3)
+#define OMAP_RTC_INTERRUPTS_IT_TIMER    (1<<2)