1 files changed, 107 insertions, 0 deletions

diff --git a/arch/cris/include/asm/rtc.h b/arch/cris/include/asm/rtc.h
new file mode 100644
index 00000000000..17d3019529e
--- /dev/null
+++ b/arch/cris/include/asm/rtc.h
@@ -0,0 +1,107 @@
+
+#ifndef __RTC_H__
+#define __RTC_H__
+
+#ifdef CONFIG_ETRAX_DS1302
+   /* Dallas DS1302 clock/calendar register numbers. */
+#  define RTC_SECONDS      0
+#  define RTC_MINUTES      1
+#  define RTC_HOURS        2
+#  define RTC_DAY_OF_MONTH 3
+#  define RTC_MONTH        4
+#  define RTC_WEEKDAY      5
+#  define RTC_YEAR         6
+#  define RTC_CONTROL      7
+
+   /* Bits in CONTROL register. */
+#  define RTC_CONTROL_WRITEPROTECT      0x80
+#  define RTC_TRICKLECHARGER            8
+
+  /* Bits in TRICKLECHARGER register TCS TCS TCS TCS DS DS RS RS. */
+#  define RTC_TCR_PATTERN       0xA0    /* 1010xxxx */
+#  define RTC_TCR_1DIOD         0x04    /* xxxx01xx */
+#  define RTC_TCR_2DIOD         0x08    /* xxxx10xx */
+#  define RTC_TCR_DISABLED      0x00    /* xxxxxx00 Disabled */
+#  define RTC_TCR_2KOHM         0x01    /* xxxxxx01 2KOhm */
+#  define RTC_TCR_4KOHM         0x02    /* xxxxxx10 4kOhm */
+#  define RTC_TCR_8KOHM         0x03    /* xxxxxx11 8kOhm */
+
+#elif defined(CONFIG_ETRAX_PCF8563)
+   /* I2C bus slave registers. */
+#  define RTC_I2C_READ          0xa3
+#  define RTC_I2C_WRITE         0xa2
+
+   /* Phillips PCF8563 registers. */
+#  define RTC_CONTROL1          0x00            /* Control/Status register 1. */
+#  define RTC_CONTROL2          0x01            /* Control/Status register 2. */
+#  define RTC_CLOCKOUT_FREQ     0x0d            /* CLKOUT frequency. */
+#  define RTC_TIMER_CONTROL     0x0e            /* Timer control. */
+#  define RTC_TIMER_CNTDOWN     0x0f            /* Timer countdown. */
+
+   /* BCD encoded clock registers. */
+#  define RTC_SECONDS           0x02
+#  define RTC_MINUTES           0x03
+#  define RTC_HOURS             0x04
+#  define RTC_DAY_OF_MONTH      0x05
+#  define RTC_WEEKDAY           0x06    /* Not coded in BCD! */
+#  define RTC_MONTH             0x07
+#  define RTC_YEAR              0x08
+#  define RTC_MINUTE_ALARM      0x09
+#  define RTC_HOUR_ALARM        0x0a
+#  define RTC_DAY_ALARM         0x0b
+#  define RTC_WEEKDAY_ALARM 0x0c
+
+#endif
+
+#ifdef CONFIG_ETRAX_DS1302
+extern unsigned char ds1302_readreg(int reg);
+extern void ds1302_writereg(int reg, unsigned char val);
+extern int ds1302_init(void);
+#  define CMOS_READ(x) ds1302_readreg(x)
+#  define CMOS_WRITE(val,reg) ds1302_writereg(reg,val)
+#  define RTC_INIT() ds1302_init()
+#elif defined(CONFIG_ETRAX_PCF8563)
+extern unsigned char pcf8563_readreg(int reg);
+extern void pcf8563_writereg(int reg, unsigned char val);
+extern int pcf8563_init(void);
+#  define CMOS_READ(x) pcf8563_readreg(x)
+#  define CMOS_WRITE(val,reg) pcf8563_writereg(reg,val)
+#  define RTC_INIT() pcf8563_init()
+#else
+  /* No RTC configured so we shouldn't try to access any. */
+#  define CMOS_READ(x) 42
+#  define CMOS_WRITE(x,y)
+#  define RTC_INIT() (-1)
+#endif
+
+/*
+ * The struct used to pass data via the following ioctl. Similar to the
+ * struct tm in <time.h>, but it needs to be here so that the kernel
+ * source is self contained, allowing cross-compiles, etc. etc.
+ */
+struct rtc_time {
+        int tm_sec;
+        int tm_min;
+        int tm_hour;
+        int tm_mday;
+        int tm_mon;
+        int tm_year;
+        int tm_wday;
+        int tm_yday;
+        int tm_isdst;
+};
+
+/* ioctl() calls that are permitted to the /dev/rtc interface. */
+#define RTC_MAGIC 'p'
+/* Read RTC time. */
+#define RTC_RD_TIME             _IOR(RTC_MAGIC, 0x09, struct rtc_time)
+/* Set RTC time. */
+#define RTC_SET_TIME            _IOW(RTC_MAGIC, 0x0a, struct rtc_time)
+#define RTC_SET_CHARGE          _IOW(RTC_MAGIC, 0x0b, int)
+/* Voltage low detector */
+#define RTC_VL_READ             _IOR(RTC_MAGIC, 0x13, int)
+/* Clear voltage low information */
+#define RTC_VL_CLR              _IO(RTC_MAGIC, 0x14)
+#define RTC_MAX_IOCTL 0x14
+
+#endif /* __RTC_H__ */