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Subject[v8 PATCH 1/6] extcon: Add EXTCON_DISP_DP and the property for USB Type-C
Date
Add EXTCON_DISP_DP for the Display external connector. For Type-C
connector the DisplayPort can work as an Alternate Mode(VESA DisplayPort
Alt Mode on USB Type-C Standard). The Type-C support both normal
and flipped orientation, so add a property to extcon.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
---

Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None
Changes in v1: None

drivers/extcon/extcon.c | 5 +++++
include/linux/extcon.h | 8 +++++++-
2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 68890bb..6c7488a 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -157,6 +157,11 @@ struct __extcon_info {
.id = EXTCON_DISP_VGA,
.name = "VGA",
},
+ [EXTCON_DISP_DP] = {
+ .type = EXTCON_TYPE_DISP | EXTCON_TYPE_USB,
+ .id = EXTCON_DISP_DP,
+ .name = "DP",
+ },

/* Miscellaneous external connector */
[EXTCON_DOCK] = {
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index f686204..9670d3f 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -69,6 +69,7 @@
#define EXTCON_DISP_MHL 41 /* Mobile High-Definition Link */
#define EXTCON_DISP_DVI 42 /* Digital Visual Interface */
#define EXTCON_DISP_VGA 43 /* Video Graphics Array */
+#define EXTCON_DISP_DP 44 /* Display Port */

/* Miscellaneous external connector */
#define EXTCON_DOCK 60
@@ -106,12 +107,17 @@
* @type: integer (intval)
* @value: 0 (low) or 1 (high)
* @default: 0 (low)
+ * - EXTCON_PROP_USB_TYPEC_POLARITY
+ * @type: integer (intval)
+ * @value: 0 (normal) or 1 (flip)
+ * @default: 0 (normal)
*/
#define EXTCON_PROP_USB_ID 0
#define EXTCON_PROP_USB_VBUS 1
+#define EXTCON_PROP_USB_TYPEC_POLARITY 2

#define EXTCON_PROP_USB_MIN 0
-#define EXTCON_PROP_USB_MAX 1
+#define EXTCON_PROP_USB_MAX 2
#define EXTCON_PROP_USB_CNT (EXTCON_PROP_USB_MAX - EXTCON_PROP_USB_MIN + 1)

/* Properties of EXTCON_TYPE_CHG. */
--
2.6.3
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