[oe] [PATCH] busybox: add posibility to specify correct rtc device for hwclock init script

[Petr Štetiar]

With this patch it's now possible to specify rtc device using HWCLOCKDEVICE
variable in /etc/default/hwclock and the system time is then set using correct
device and vice versa. It's wise to have such functionality, beacuse there're
SBCs with more then one rtc device, for example ts72xx.

Signed-off-by: Petr Štetiar <ynezz at true.cz>
---
 recipes/busybox/busybox.inc      |    2 +-
 recipes/busybox/files/hwclock.sh |   28 ++++++++++++++++++++++++----
 2 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/recipes/busybox/busybox.inc b/recipes/busybox/busybox.inc
index 1046b2f..401f6ad 100644
--- a/recipes/busybox/busybox.inc
+++ b/recipes/busybox/busybox.inc
@@ -11,7 +11,7 @@ LICENSE = "GPLv2"
 SECTION = "base"
 PRIORITY = "required"
 
-INC_PR = "r34"
+INC_PR = "r35"
 
 SRC_URI = "\
   file://busybox-cron \
diff --git a/recipes/busybox/files/hwclock.sh b/recipes/busybox/files/hwclock.sh
index 71538fb..1bc9de3 100644
--- a/recipes/busybox/files/hwclock.sh
+++ b/recipes/busybox/files/hwclock.sh
@@ -30,9 +30,19 @@ case "$1" in
 		then
 			if [ -z "$TZ" ]
 			then
-	                   hwclock -s $UTC
+				if [ -z "$HWCLOCKDEVICE" ]
+				then
+					hwclock -s $UTC
+				else
+					hwclock -s $UTC -f $HWCLOCKDEVICE
+				fi
 			else
-			   TZ="$TZ" hwclock -s $UTC
+				if [ -z "$HWCLOCKDEVICE" ]
+				then
+					TZ="$TZ" hwclock -s $UTC
+				else
+					TZ="$TZ" hwclock -s $UTC -f $HWCLOCKDEVICE
+				fi
 			fi
 		fi
 
@@ -55,7 +65,12 @@ case "$1" in
 		fi
 		if [ "$HWCLOCKACCESS" != no ]
 		then
-			hwclock -w $UTC
+			if [ -z "$HWCLOCKDEVICE" ]
+			then
+				hwclock -w $UTC
+			else
+				hwclock -w $UTC -f $HWCLOCKDEVICE
+			fi
 		fi
 		if [ "$VERBOSE" != no ]
 		then
@@ -66,7 +81,12 @@ case "$1" in
 	show)
 		if [ "$HWCLOCKACCESS" != no ]
 		then
-			hwclock -r $UTC
+			if [ -z "$HWCLOCKDEVICE" ]
+			then
+				hwclock -r $UTC
+			else
+				hwclock -r $UTC -f $HWCLOCKDEVICE
+			fi
 		fi
 		;;
         *)
-- 
1.7.0.4