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authorChris Zhong <zyw@rock-chips.com>2016-09-09 19:15:44 -0700
committerChanwoo Choi <cw00.choi@samsung.com>2016-09-13 10:08:47 +0900
commitc7914e8dfa4032d24ef7af4c86b9c841ec6b74e6 (patch)
treeaa5def75ff343fa6f7c70ff96f588a12ec6141a6 /include/linux/extcon.h
parent8457a1b49a2af0a0e71f80afed9f7c80de361610 (diff)
extcon: Introduce EXTCON_PROP_DISP_HPD property
EXTCON_PROP_DISP_HPD is need by display port, if the system has no hpd interrupt, this property can be used. - HPD (Hot Plug Detect) send the signal whether display device is on or off to source device. Signed-off-by: Chris Zhong <zyw@rock-chips.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> [cw00.choi: Add the description of HPD and full name of HPD] Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'include/linux/extcon.h')
-rw-r--r--include/linux/extcon.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index b34d1ae9011f..5c35f9d1822c 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -133,9 +133,20 @@
#define EXTCON_PROP_JACK_MAX 100
#define EXTCON_PROP_JACK_CNT (EXTCON_PROP_JACK_MAX - EXTCON_PROP_JACK_MIN + 1)
+/*
+ * Properties of EXTCON_TYPE_DISP.
+ *
+ * - EXTCON_PROP_DISP_HPD (Hot Plug Detect)
+ * @type: integer (intval)
+ * @value: 0 (no hpd) or 1 (hpd)
+ * @default: 0 (no hpd)
+ *
+ */
+#define EXTCON_PROP_DISP_HPD 150
+
/* Properties of EXTCON_TYPE_DISP. */
#define EXTCON_PROP_DISP_MIN 150
-#define EXTCON_PROP_DISP_MAX 150
+#define EXTCON_PROP_DISP_MAX 151
#define EXTCON_PROP_DISP_CNT (EXTCON_PROP_DISP_MAX - EXTCON_PROP_DISP_MIN + 1)
/*