[PATCH] ppc32: Add support for the Dallas 1553 RTC/NVRAM

This patch adds support for the Dallas 1553 RTC/NVRAM.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc/syslib/todc_time.c

@@ -287,6 +287,7 @@ todc_get_rtc_time(void)
 		limit = 1;
 
 		switch (todc_info->rtc_type) {
+			case TODC_TYPE_DS1553:
 			case TODC_TYPE_DS1557:
 			case TODC_TYPE_DS1743:
 			case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
@@ -322,6 +323,7 @@ todc_get_rtc_time(void)
 
 	if (todc_info->rtc_type != TODC_TYPE_MC146818) {
 		switch (todc_info->rtc_type) {
+			case TODC_TYPE_DS1553:
 			case TODC_TYPE_DS1557:
 			case TODC_TYPE_DS1743:
 			case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
@@ -418,6 +420,7 @@ static unsigned char __init todc_read_timereg(int addr)
 	unsigned char save_control = 0, val;
 
 	switch (todc_info->rtc_type) {
+		case TODC_TYPE_DS1553:
 		case TODC_TYPE_DS1557:
 		case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
 		case TODC_TYPE_DS1747:
@@ -432,6 +435,7 @@ static unsigned char __init todc_read_timereg(int addr)
 	val = todc_read_val(addr);
 
 	switch (todc_info->rtc_type) {
+		case TODC_TYPE_DS1553:
 		case TODC_TYPE_DS1557:
 		case TODC_TYPE_DS1746:	/* XXXX BAD HACK -> FIX */
 		case TODC_TYPE_DS1747:

include/asm-ppc/todc.h

@@ -98,6 +98,7 @@ typedef struct {
 #define TODC_TYPE_PC97307		10	/* PC97307 internal RTC */
 #define TODC_TYPE_DS1557		11	/* Dallas DS1557 RTC */
 #define TODC_TYPE_DS17285		12	/* Dallas DS17285 RTC */
+#define TODC_TYPE_DS1553		13	/* Dallas DS1553 RTC */
 #define	TODC_TYPE_MC146818		100	/* Leave room for m48txx's */
 
 /*
@@ -208,6 +209,28 @@ typedef struct {
 #define	TODC_TYPE_DS1501_NVRAM_ADDR_REG	0x10
 #define	TODC_TYPE_DS1501_NVRAM_DATA_REG	0x13
 
+#define	TODC_TYPE_DS1553_NVRAM_SIZE		0x1ff0
+#define	TODC_TYPE_DS1553_SW_FLAGS		0
+#define	TODC_TYPE_DS1553_YEAR			0x1fff
+#define	TODC_TYPE_DS1553_MONTH			0x1ffe
+#define	TODC_TYPE_DS1553_DOM			0x1ffd	/* Day of Month */
+#define	TODC_TYPE_DS1553_DOW			0x1ffc	/* Day of Week */
+#define	TODC_TYPE_DS1553_HOURS			0x1ffb
+#define	TODC_TYPE_DS1553_MINUTES		0x1ffa
+#define	TODC_TYPE_DS1553_SECONDS		0x1ff9
+#define	TODC_TYPE_DS1553_CNTL_B			0x1ff9
+#define	TODC_TYPE_DS1553_CNTL_A			0x1ff8	/* control_a R/W regs */
+#define	TODC_TYPE_DS1553_WATCHDOG		0x1ff7
+#define	TODC_TYPE_DS1553_INTERRUPTS		0x1ff6
+#define	TODC_TYPE_DS1553_ALARM_DATE		0x1ff5
+#define	TODC_TYPE_DS1553_ALARM_HOUR		0x1ff4
+#define	TODC_TYPE_DS1553_ALARM_MINUTES		0x1ff3
+#define	TODC_TYPE_DS1553_ALARM_SECONDS		0x1ff2
+#define	TODC_TYPE_DS1553_CENTURY		0x1ff8
+#define	TODC_TYPE_DS1553_FLAGS			0x1ff0
+#define	TODC_TYPE_DS1553_NVRAM_ADDR_REG		0
+#define	TODC_TYPE_DS1553_NVRAM_DATA_REG		0
+
 #define	TODC_TYPE_DS1557_NVRAM_SIZE		0x7fff0
 #define	TODC_TYPE_DS1557_SW_FLAGS		0
 #define	TODC_TYPE_DS1557_YEAR			0x7ffff