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    Subject[PATCH 33/51] extcon: Add EXTCON_DISP_DP and the property for USB Type-C
    Date
    From: Chris Zhong <zyw@rock-chips.com>

    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>
    Tested-by: Chris Zhong <zyw@rock-chips.com>
    Tested-by: Guenter Roeck <groeck@chromium.org>
    Reviewed-by: Guenter Roeck <groeck@chromium.org>
    Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
    ---
    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 8fde4be..a0a1eea 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 162c46a..ad7a160 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
    @@ -102,11 +103,16 @@
    * @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_VBUS 0
    +#define EXTCON_PROP_USB_TYPEC_POLARITY 1

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

    /* Properties of EXTCON_TYPE_CHG. */
    --
    1.7.9.5
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