diff -u --new-file --recursive --exclude-from /usr/src/exclude linux-2.5.65/include/linux/upd4990a.h linux-2.5.65-ac2/include/linux/upd4990a.h
--- linux-2.5.65/include/linux/upd4990a.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.5.65-ac2/include/linux/upd4990a.h 2003-02-14 23:35:38.000000000 +0000
@@ -0,0 +1,140 @@
+/*
+ * Constant and architecture independent procedures
+ * for NEC uPD4990A serial I/O real-time clock.
+ *
+ * Copyright 2001 TAKAI Kousuke <tak@kmc.kyoto-u.ac.jp>
+ * Kyoto University Microcomputer Club (KMC).
+ *
+ * References:
+ * uPD4990A serial I/O real-time clock users' manual (Japanese)
+ * No. S12828JJ4V0UM00 (4th revision), NEC Corporation, 1999.
+ */
+
+#ifndef _LINUX_uPD4990A_H
+#define _LINUX_uPD4990A_H
+
+#include <asm/byteorder.h>
+
+#include <asm/upd4990a.h>
+
+/* Serial commands (4 bits) */
+#define UPD4990A_REGISTER_HOLD (0x0)
+#define UPD4990A_REGISTER_SHIFT (0x1)
+#define UPD4990A_TIME_SET_AND_COUNTER_HOLD (0x2)
+#define UPD4990A_TIME_READ (0x3)
+#define UPD4990A_TP_64HZ (0x4)
+#define UPD4990A_TP_256HZ (0x5)
+#define UPD4990A_TP_2048HZ (0x6)
+#define UPD4990A_TP_4096HZ (0x7)
+#define UPD4990A_TP_1S (0x8)
+#define UPD4990A_TP_10S (0x9)
+#define UPD4990A_TP_30S (0xA)
+#define UPD4990A_TP_60S (0xB)
+#define UPD4990A_INTERRUPT_RESET (0xC)
+#define UPD4990A_INTERRUPT_TIMER_START (0xD)
+#define UPD4990A_INTERRUPT_TIMER_STOP (0xE)
+#define UPD4990A_TEST_MODE_SET (0xF)
+
+/* Parallel commands (3 bits)
+ 0-6 are same with serial commands. */
+#define UPD4990A_PAR_SERIAL_MODE 7
+
+#ifndef UPD4990A_DELAY
+# include <linux/delay.h>
+# define UPD4990A_DELAY(usec) udelay((usec))
+#endif
+#ifndef UPD4990A_OUTPUT_DATA
+# define UPD4990A_OUTPUT_DATA(bit) \
+ do { \
+ UPD4990A_OUTPUT_DATA_CLK((bit), 0); \
+ UPD4990A_DELAY(1); /* t-DSU */ \
+ UPD4990A_OUTPUT_DATA_CLK((bit), 1); \
+ UPD4990A_DELAY(1); /* t-DHLD */ \
+ } while (0)
+#endif
+
+static __inline__ void upd4990a_serial_command(int command)
+{
+ UPD4990A_OUTPUT_DATA(command >> 0);
+ UPD4990A_OUTPUT_DATA(command >> 1);
+ UPD4990A_OUTPUT_DATA(command >> 2);
+ UPD4990A_OUTPUT_DATA(command >> 3);
+ UPD4990A_DELAY(1); /* t-HLD */
+ UPD4990A_OUTPUT_STROBE(1);
+ UPD4990A_DELAY(1); /* t-STB & t-d1 */
+ UPD4990A_OUTPUT_STROBE(0);
+ /* 19 microseconds extra delay is needed
+ iff previous mode is TIME READ command */
+}
+
+struct upd4990a_raw_data {
+ u8 sec; /* BCD */
+ u8 min; /* BCD */
+ u8 hour; /* BCD */
+ u8 mday; /* BCD */
+#if defined __LITTLE_ENDIAN_BITFIELD
+ unsigned wday :4; /* 0-6 */
+ unsigned mon :4; /* 1-based */
+#elif defined __BIG_ENDIAN_BITFIELD
+ unsigned mon :4; /* 1-based */
+ unsigned wday :4; /* 0-6 */
+#else
+# error Unknown bitfield endian!
+#endif
+ u8 year; /* BCD */
+};
+
+static __inline__ void upd4990a_get_time(struct upd4990a_raw_data *buf,
+ int leave_register_hold)
+{
+ int byte;
+
+ upd4990a_serial_command(UPD4990A_TIME_READ);
+ upd4990a_serial_command(UPD4990A_REGISTER_SHIFT);
+ UPD4990A_DELAY(19); /* t-d2 - t-d1 */
+
+ for (byte = 0; byte < 6; byte++) {
+ u8 tmp;
+ int bit;
+
+ for (tmp = 0, bit = 0; bit < 8; bit++) {
+ tmp = (tmp | (UPD4990A_READ_DATA() << 8)) >> 1;
+ UPD4990A_OUTPUT_CLK(1);
+ UPD4990A_DELAY(1);
+ UPD4990A_OUTPUT_CLK(0);
+ UPD4990A_DELAY(1);
+ }
+ ((u8 *) buf)[byte] = tmp;
+ }
+
+ /* The uPD4990A users' manual says that we should issue `Register
+ Hold' command after each data retrieval, or next `Time Read'
+ command may not work correctly. */
+ if (!leave_register_hold)
+ upd4990a_serial_command(UPD4990A_REGISTER_HOLD);
+}
+
+static __inline__ void upd4990a_set_time(const struct upd4990a_raw_data *data,
+ int time_set_only)
+{
+ int byte;
+
+ if (!time_set_only)
+ upd4990a_serial_command(UPD4990A_REGISTER_SHIFT);
+
+ for (byte = 0; byte < 6; byte++) {
+ int bit;
+ u8 tmp = ((const u8 *) data)[byte];
+
+ for (bit = 0; bit < 8; bit++, tmp >>= 1)
+ UPD4990A_OUTPUT_DATA(tmp);
+ }
+
+ upd4990a_serial_command(UPD4990A_TIME_SET_AND_COUNTER_HOLD);
+
+ /* Release counter hold and start the clock. */
+ if (!time_set_only)
+ upd4990a_serial_command(UPD4990A_REGISTER_HOLD);
+}
+
+#endif /* _LINUX_uPD4990A_H */
-
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