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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/rtc.h
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Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-cris/rtc.h')
-rw-r--r--include/asm-cris/rtc.h107
1 files changed, 107 insertions, 0 deletions
diff --git a/include/asm-cris/rtc.h b/include/asm-cris/rtc.h
new file mode 100644
index 0000000..97c1303
--- /dev/null
+++ b/include/asm-cris/rtc.h
@@ -0,0 +1,107 @@
+/* $Id: rtc.h,v 1.7 2002/11/04 07:32:09 starvik Exp $ */
+
+#ifndef __RTC_H__
+#define __RTC_H__
+
+
+#include <linux/config.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'
+#define RTC_RD_TIME _IOR(RTC_MAGIC, 0x09, struct rtc_time) /* Read RTC time. */
+#define RTC_SET_TIME _IOW(RTC_MAGIC, 0x0a, struct rtc_time) /* Set RTC time. */
+#define RTC_SET_CHARGE _IOW(RTC_MAGIC, 0x0b, int)
+#define RTC_VLOW_RD _IOR(RTC_MAGIC, 0x11, int) /* Voltage Low detector */
+#define RTC_VLOW_SET _IO(RTC_MAGIC, 0x12) /* Clear voltage low information */
+#define RTC_MAX_IOCTL 0x12
+
+#endif /* __RTC_H__ */