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>

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 9a266e5..f209a69 100644 (file)
--- 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,

diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 667b1d3..46d8028 100644 (file)
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -28,6 +28,15 @@
 
 #include <linux/device.h>
 
+/*
+ * Define the type of supported external connectors
+ */
+#define EXTCON_TYPE_USB                BIT(0)  /* USB connector */
+#define EXTCON_TYPE_CHG                BIT(1)  /* Charger connector */
+#define EXTCON_TYPE_JACK       BIT(2)  /* Jack connector */
+#define EXTCON_TYPE_DISP       BIT(3)  /* Display connector */
+#define EXTCON_TYPE_MISC       BIT(4)  /* Miscellaneous connector */
+
 /*
  * Define the unique id of supported external connectors
  */