ALSA: jack - Add "Line In" input jack constants

Similar to Line Out, these constants form the base for future
patches enabling input jack reporting for Line in jacks.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/linux/input.h

@@ -814,6 +814,7 @@ struct input_keymap_entry {
 #define SW_KEYPAD_SLIDE		0x0a  /* set = keypad slide out */
 #define SW_FRONT_PROXIMITY	0x0b  /* set = front proximity sensor active */
 #define SW_ROTATE_LOCK		0x0c  /* set = rotate locked/disabled */
+#define SW_LINEIN_INSERT	0x0d  /* set = inserted */
 #define SW_MAX			0x0f
 #define SW_CNT			(SW_MAX+1)
 

include/sound/jack.h

@@ -42,6 +42,7 @@ enum snd_jack_types {
 	SND_JACK_MECHANICAL	= 0x0008, /* If detected separately */
 	SND_JACK_VIDEOOUT	= 0x0010,
 	SND_JACK_AVOUT		= SND_JACK_LINEOUT | SND_JACK_VIDEOOUT,
+	SND_JACK_LINEIN		= 0x0020,
 
 	/* Kept separate from switches to facilitate implementation */
 	SND_JACK_BTN_0		= 0x4000,

sound/core/jack.c

@@ -30,6 +30,7 @@ static int jack_switch_types[] = {
 	SW_LINEOUT_INSERT,
 	SW_JACK_PHYSICAL_INSERT,
 	SW_VIDEOOUT_INSERT,
+	SW_LINEIN_INSERT,
 };
 
 static int snd_jack_dev_free(struct snd_device *device)

sound/pci/hda/hda_codec.c

@@ -5264,6 +5264,8 @@ static const char *get_jack_default_name(struct hda_codec *codec, hda_nid_t nid,
 		return "Mic";
 	case SND_JACK_LINEOUT:
 		return "Line-out";
+	case SND_JACK_LINEIN:
+		return "Line-in";
 	case SND_JACK_HEADSET:
 		return "Headset";
 	case SND_JACK_VIDEOOUT: