ALSA: Use a define for the number of jack switch types

This is intended to facilitate the merge of the two jack detection
mechanisms.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/sound/jack.h b/include/sound/jack.h
index 63c790742db4..58916573db58 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h
@@ -53,6 +53,9 @@ enum snd_jack_types {
         SND_JACK_BTN_5          = 0x0200,
 };
 
+/* Keep in sync with definitions above */
+#define SND_JACK_SWITCH_TYPES 6
+
 struct snd_jack {
         struct input_dev *input_dev;
         int registered;