extcon: Add the extcon_type to gather each connector into five category

This patch adds the new extcon type to group the each connecotr
into following five category. This type would be used to handle
the connectors as a group unit instead of a connector unit.
- EXTCON_TYPE_USB  : USB connector
- EXTCON_TYPE_CHG  : Charger connector
- EXTCON_TYPE_JACK : Jack connector
- EXTCON_TYPE_DISP : Display connector
- EXTCON_TYPE_MISC : Miscellaneous connector

Also, each external connector is possible to belong to one more extcon type.
In caes of EXTCON_CHG_USB_SDP, it have the EXTCON_TYPE_CHG and EXTCON_TYPE_USB.

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

1 files changed, 130 insertions, 29 deletions

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 9a266e5c7e10..f209a6959fed 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -38,43 +38,144 @@
 #define SUPPORTED_CABLE_MAX     32
 #define CABLE_NAME_MAX          30
 
-static const char *extcon_name[] =  {
-        [EXTCON_NONE]                   = "NONE",
+struct __extcon_info {
+        unsigned int type;
+        unsigned int id;
+        const char *name;
+
+} extcon_info[] = {
+        [EXTCON_NONE] = {
+                .type = EXTCON_TYPE_MISC,
+                .id = EXTCON_NONE,
+                .name = "NONE",
+        },
 
         /* USB external connector */
-        [EXTCON_USB]                    = "USB",
-        [EXTCON_USB_HOST]               = "USB-HOST",
+        [EXTCON_USB] = {
+                .type = EXTCON_TYPE_USB,
+                .id = EXTCON_USB,
+                .name = "USB",
+        },
+        [EXTCON_USB_HOST] = {
+                .type = EXTCON_TYPE_USB,
+                .id = EXTCON_USB_HOST,
+                .name = "USB_HOST",
+        },
 
         /* Charging external connector */
-        [EXTCON_CHG_USB_SDP]            = "SDP",
-        [EXTCON_CHG_USB_DCP]            = "DCP",
-        [EXTCON_CHG_USB_CDP]            = "CDP",
-        [EXTCON_CHG_USB_ACA]            = "ACA",
-        [EXTCON_CHG_USB_FAST]           = "FAST-CHARGER",
-        [EXTCON_CHG_USB_SLOW]           = "SLOW-CHARGER",
+        [EXTCON_CHG_USB_SDP] = {
+                .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+                .id = EXTCON_CHG_USB_SDP,
+                .name = "SDP",
+        },
+        [EXTCON_CHG_USB_DCP] = {
+                .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+                .id = EXTCON_CHG_USB_DCP,
+                .name = "DCP",
+        },
+        [EXTCON_CHG_USB_CDP] = {
+                .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+                .id = EXTCON_CHG_USB_CDP,
+                .name = "CDP",
+        },
+        [EXTCON_CHG_USB_ACA] = {
+                .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+                .id = EXTCON_CHG_USB_ACA,
+                .name = "ACA",
+        },
+        [EXTCON_CHG_USB_FAST] = {
+                .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+                .id = EXTCON_CHG_USB_FAST,
+                .name = "FAST-CHARGER",
+        },
+        [EXTCON_CHG_USB_SLOW] = {
+                .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+                .id = EXTCON_CHG_USB_SLOW,
+                .name = "SLOW-CHARGER",
+        },
 
         /* Jack external connector */
-        [EXTCON_JACK_MICROPHONE]        = "MICROPHONE",
-        [EXTCON_JACK_HEADPHONE]         = "HEADPHONE",
-        [EXTCON_JACK_LINE_IN]           = "LINE-IN",
-        [EXTCON_JACK_LINE_OUT]          = "LINE-OUT",
-        [EXTCON_JACK_VIDEO_IN]          = "VIDEO-IN",
-        [EXTCON_JACK_VIDEO_OUT]         = "VIDEO-OUT",
-        [EXTCON_JACK_SPDIF_IN]          = "SPDIF-IN",
-        [EXTCON_JACK_SPDIF_OUT]         = "SPDIF-OUT",
+        [EXTCON_JACK_MICROPHONE] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_MICROPHONE,
+                .name = "MICROPHONE",
+        },
+        [EXTCON_JACK_HEADPHONE] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_HEADPHONE,
+                .name = "HEADPHONE",
+        },
+        [EXTCON_JACK_LINE_IN] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_LINE_IN,
+                .name = "LINE-IN",
+        },
+        [EXTCON_JACK_LINE_OUT] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_LINE_OUT,
+                .name = "LINE-OUT",
+        },
+        [EXTCON_JACK_VIDEO_IN] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_VIDEO_IN,
+                .name = "VIDEO-IN",
+        },
+        [EXTCON_JACK_VIDEO_OUT] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_VIDEO_OUT,
+                .name = "VIDEO-OUT",
+        },
+        [EXTCON_JACK_SPDIF_IN] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_SPDIF_IN,
+                .name = "SPDIF-IN",
+        },
+        [EXTCON_JACK_SPDIF_OUT] = {
+                .type = EXTCON_TYPE_JACK,
+                .id = EXTCON_JACK_SPDIF_OUT,
+                .name = "SPDIF-OUT",
+        },
 
         /* Display external connector */
-        [EXTCON_DISP_HDMI]              = "HDMI",
-        [EXTCON_DISP_MHL]               = "MHL",
-        [EXTCON_DISP_DVI]               = "DVI",
-        [EXTCON_DISP_VGA]               = "VGA",
+        [EXTCON_DISP_HDMI] = {
+                .type = EXTCON_TYPE_DISP,
+                .id = EXTCON_DISP_HDMI,
+                .name = "HDMI",
+        },
+        [EXTCON_DISP_MHL] = {
+                .type = EXTCON_TYPE_DISP,
+                .id = EXTCON_DISP_MHL,
+                .name = "MHL",
+        },
+        [EXTCON_DISP_DVI] = {
+                .type = EXTCON_TYPE_DISP,
+                .id = EXTCON_DISP_DVI,
+                .name = "DVI",
+        },
+        [EXTCON_DISP_VGA] = {
+                .type = EXTCON_TYPE_DISP,
+                .id = EXTCON_DISP_VGA,
+                .name = "VGA",
+        },
 
         /* Miscellaneous external connector */
-        [EXTCON_DOCK]                   = "DOCK",
-        [EXTCON_JIG]                    = "JIG",
-        [EXTCON_MECHANICAL]             = "MECHANICAL",
-
-        NULL,
+        [EXTCON_DOCK] = {
+                .type = EXTCON_TYPE_MISC,
+                .id = EXTCON_DOCK,
+                .name = "DOCK",
+        },
+        [EXTCON_JIG] = {
+                .type = EXTCON_TYPE_MISC,
+                .id = EXTCON_JIG,
+                .name = "JIG",
+        },
+        [EXTCON_MECHANICAL] = {
+                .type = EXTCON_TYPE_MISC,
+                .id = EXTCON_MECHANICAL,
+                .name = "MECHANICAL",
+        },
+
+        { /* sentinel */ }
 };
 
 /**
@@ -168,7 +269,7 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
 
         for (i = 0; i < edev->max_supported; i++) {
                 count += sprintf(buf + count, "%s=%d\n",
-                                extcon_name[edev->supported_cable[i]],
+                                extcon_info[edev->supported_cable[i]].name,
                                  !!(edev->state & (1 << i)));
         }
 
@@ -193,7 +294,7 @@ static ssize_t cable_name_show(struct device *dev,
         int i = cable->cable_index;
 
         return sprintf(buf, "%s\n",
-                        extcon_name[cable->edev->supported_cable[i]]);
+                        extcon_info[cable->edev->supported_cable[i]].name);
 }
 
 static ssize_t cable_state_show(struct device *dev,