Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / sound / tlv.h

diff --git a/kernel/include/sound/tlv.h b/kernel/include/sound/tlv.h
new file mode 100644 (file)
index 0000000..e11e179
--- /dev/null
+++ b/kernel/include/sound/tlv.h
@@ -0,0 +1,101 @@
+#ifndef __SOUND_TLV_H
+#define __SOUND_TLV_H
+
+/*
+ *  Advanced Linux Sound Architecture - ALSA - Driver
+ *  Copyright (c) 2006 by Jaroslav Kysela <perex@perex.cz>
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+/*
+ * TLV structure is right behind the struct snd_ctl_tlv:
+ *   unsigned int type         - see SNDRV_CTL_TLVT_*
+ *   unsigned int length
+ *   .... data aligned to sizeof(unsigned int), use
+ *        block_length = (length + (sizeof(unsigned int) - 1)) &
+ *                       ~(sizeof(unsigned int) - 1)) ....
+ */
+
+#define SNDRV_CTL_TLVT_CONTAINER 0     /* one level down - group of TLVs */
+#define SNDRV_CTL_TLVT_DB_SCALE        1       /* dB scale */
+#define SNDRV_CTL_TLVT_DB_LINEAR 2     /* linear volume */
+#define SNDRV_CTL_TLVT_DB_RANGE 3      /* dB range container */
+#define SNDRV_CTL_TLVT_DB_MINMAX 4     /* dB scale with min/max */
+#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5        /* dB scale with min/max with mute */
+
+#define TLV_ITEM(type, ...) \
+       (type), TLV_LENGTH(__VA_ARGS__), __VA_ARGS__
+#define TLV_LENGTH(...) \
+       ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ }))
+
+#define TLV_CONTAINER_ITEM(...) \
+       TLV_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__)
+#define DECLARE_TLV_CONTAINER(name, ...) \
+       unsigned int name[] = { TLV_CONTAINER_ITEM(__VA_ARGS__) }
+
+#define TLV_DB_SCALE_MASK      0xffff
+#define TLV_DB_SCALE_MUTE      0x10000
+#define TLV_DB_SCALE_ITEM(min, step, mute)                     \
+       TLV_ITEM(SNDRV_CTL_TLVT_DB_SCALE,                       \
+                (min),                                 \
+                ((step) & TLV_DB_SCALE_MASK) |         \
+                       ((mute) ? TLV_DB_SCALE_MUTE : 0))
+#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \
+       unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) }
+
+/* dB scale specified with min/max values instead of step */
+#define TLV_DB_MINMAX_ITEM(min_dB, max_dB)                     \
+       TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX, (min_dB), (max_dB))
+#define TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB)                        \
+       TLV_ITEM(SNDRV_CTL_TLVT_DB_MINMAX_MUTE, (min_dB), (max_dB))
+#define DECLARE_TLV_DB_MINMAX(name, min_dB, max_dB) \
+       unsigned int name[] = { TLV_DB_MINMAX_ITEM(min_dB, max_dB) }
+#define DECLARE_TLV_DB_MINMAX_MUTE(name, min_dB, max_dB) \
+       unsigned int name[] = { TLV_DB_MINMAX_MUTE_ITEM(min_dB, max_dB) }
+
+/* linear volume between min_dB and max_dB (.01dB unit) */
+#define TLV_DB_LINEAR_ITEM(min_dB, max_dB)                 \
+       TLV_ITEM(SNDRV_CTL_TLVT_DB_LINEAR, (min_dB), (max_dB))
+#define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB)    \
+       unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) }
+
+/* dB range container:
+ * Items in dB range container must be ordered by their values and by their
+ * dB values. This implies that larger values must correspond with larger
+ * dB values (which is also required for all other mixer controls).
+ */
+/* Each item is: <min> <max> <TLV> */
+#define TLV_DB_RANGE_ITEM(...) \
+       TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__)
+#define DECLARE_TLV_DB_RANGE(name, ...) \
+       unsigned int name[] = { TLV_DB_RANGE_ITEM(__VA_ARGS__) }
+/* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */
+#define TLV_DB_RANGE_HEAD(num)                 \
+       SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)
+
+#define TLV_DB_GAIN_MUTE       -9999999
+
+/*
+ * channel-mapping TLV items
+ *  TLV length must match with num_channels
+ */
+#define SNDRV_CTL_TLVT_CHMAP_FIXED     0x101   /* fixed channel position */
+#define SNDRV_CTL_TLVT_CHMAP_VAR       0x102   /* channels freely swappable */
+#define SNDRV_CTL_TLVT_CHMAP_PAIRED    0x103   /* pair-wise swappable */
+
+#endif /* __SOUND_TLV_H */