From acf14767e17ab7ee8b6213f9e56d07d9ffa033da Mon Sep 17 00:00:00 2001
From: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Date: Fri, 5 Jul 2013 11:28:00 +0200
Subject: [PATCH] ALSA: hdspm - Introduce generic AIO tristate control

AIO cards offer at least four individual settings options with three
states each. Those settings are represented as two bits in the settings
register with the following meaning:

   0*some_base_bit --> Option value 0
   1*some_base_bit --> Option value 1
   2*some_base_bit --> Option value 2
   3*some_base_bit --> mask to select the two involved bits

This patch adds a generic ALSA control macro for such a value-to-bit
pattern mapping. It will be used in a later commit to expose four new
controls.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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