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#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */
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#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */
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#define TLV_DB_SCALE_ITEM(min, step, mute) \
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SNDRV_CTL_TLVT_DB_SCALE, 2 * sizeof(unsigned int), \
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#define DECLARE_TLV_DB_SCALE(name, min, step, mute) \
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unsigned int name[] = { TLV_DB_SCALE_ITEM(min, step, mute) }