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authorJens Frederich <jfrederich@gmail.com>2013-08-15 21:34:55 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-15 17:22:27 -0700
commit98d4f93c79b002f85480320fe63fefaa31d58b6c (patch)
tree0bd102d568f888d5e1eb4e359018211851bf93fd /include/linux/olpc-ec.h
parent01f865ba4a1ee95d4828b4f3fa69d68f9ac4b9ba (diff)
downloadop-kernel-dev-98d4f93c79b002f85480320fe63fefaa31d58b6c.zip
op-kernel-dev-98d4f93c79b002f85480320fe63fefaa31d58b6c.tar.gz
Staging: olpc_dcon: replace some magic numbers
This patch replace some magic numbers. I believe it makes the driver more readable. The magic number 0x26 is the XO system embedded controller (EC) command 'DCON power enable/disable'. Number 0x41, and 0x42 are special memory controller settings register. The 0x41 initialize bit sequence 0x101 means: enable memory power down function and special SDRAM clock delay for synchronize SDRAM output and clock signal. The 0x42 initialize squence 0x101 is wrong. According to the specification Bit 8 is reserved, thus not in use. I removed it. Signed-off-by: Jens Frederich <jfrederich@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/olpc-ec.h')
-rw-r--r--include/linux/olpc-ec.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/olpc-ec.h b/include/linux/olpc-ec.h
index 5bb6e76..2925df3 100644
--- a/include/linux/olpc-ec.h
+++ b/include/linux/olpc-ec.h
@@ -6,6 +6,7 @@
#define EC_WRITE_SCI_MASK 0x1b
#define EC_WAKE_UP_WLAN 0x24
#define EC_WLAN_LEAVE_RESET 0x25
+#define EC_DCON_POWER_MODE 0x26
#define EC_READ_EB_MODE 0x2a
#define EC_SET_SCI_INHIBIT 0x32
#define EC_SET_SCI_INHIBIT_RELEASE 0x34
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