tishtushi: Revert patching Dragonfly quirk.

This reverts commit 7f9f88e90b8ab41a97a86fa4ff8a501e0e0eea27.

The reason why I'm reverting this is because while it indeed fixes the
volume mapping, it doesn't fix my main problem that it takes a few
seconds to go from 100% volume to the desired volume level that's
currently set.

So instead of applying this patch and maintaining it until it may
eventually hit mainline, it's better to debug the original issue rather
than applying a patch that _may_ fix an unrelated issue.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

1 files changed, 0 insertions, 95 deletions

diff --git a/pkgs/kpatches/dragonfly/0001-ALSA-usb-audio-Add-a-volume-scale-quirk-for-AudioQue.patch b/pkgs/kpatches/dragonfly/0001-ALSA-usb-audio-Add-a-volume-scale-quirk-for-AudioQue.patch
deleted file mode 100644
index e04df9ed..00000000
--- a/pkgs/kpatches/dragonfly/0001-ALSA-usb-audio-Add-a-volume-scale-quirk-for-AudioQue.patch
+++ /dev/null
@@ -1,95 +0,0 @@
-From 8ccfffa0584532d9a98646bc39ead0e2361a86a2 Mon Sep 17 00:00:00 2001
-From: Anssi Hannula <anssi.hannula@iki.fi>
-Date: Sun, 16 Aug 2015 15:50:12 +0300
-Subject: [PATCH 1/3] ALSA: usb-audio: Add a volume scale quirk for AudioQuest
- DragonFly
-
-AudioQuest DragonFly DAC reports a volume control range of 0..50
-(0x0000..0x0032) which in USB Audio means a range of 0 .. 0.2dB, which
-is obviously incorrect and causes software using the dB information in
-e.g. volume sliders to have a massive volume difference in 100..102%
-range.
-
-The actual volume mapping seems to be neither linear volume nor linear
-dB scale, but instead quite close to the cubic mapping e.g. alsamixer
-uses, with a range of -53...0 dB.
-
-Add a quirk for DragonFly to use a custom dB mapping, based on my
-measurements, using a 10-item range TLV (so it still fits in alsa-lib
-MAX_TLV_RANGE_SIZE).
-
-Tested on AudioQuest DragonFly HW v1.2. The quirk is only applied if the
-range is 0..50, so if this gets fixed/changed in later HW revisions it
-will no longer be applied.
-
-Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
-Cc: <stable@vger.kernel.org>
----
- sound/usb/mixer_quirks.c | 37 +++++++++++++++++++++++++++++++++++++
- 1 file changed, 37 insertions(+)
-
-diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
-index d3608c0..dee73fa 100644
---- a/sound/usb/mixer_quirks.c
-+++ b/sound/usb/mixer_quirks.c
-@@ -37,6 +37,7 @@
- #include <sound/control.h>
- #include <sound/hwdep.h>
- #include <sound/info.h>
-+#include <sound/tlv.h>
- 
- #include "usbaudio.h"
- #include "mixer.h"
-@@ -1715,6 +1716,38 @@ static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
- 	return 0;
- }
- 
-+static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer)
-+{
-+	struct usb_mixer_elem_list *list;
-+	struct usb_mixer_elem_info *cval;
-+	static const int unit_id = 7;
-+
-+	/* approximation using 10 ranges based on output measurement on hw v1.2 */
-+	static const DECLARE_TLV_DB_RANGE(scale,
-+		 0,  1, TLV_DB_MINMAX_ITEM(-5300, -4970),
-+		 2,  5, TLV_DB_MINMAX_ITEM(-4710, -4160),
-+		 6,  7, TLV_DB_MINMAX_ITEM(-3884, -3710),
-+		 8, 14, TLV_DB_MINMAX_ITEM(-3443, -2560),
-+		15, 16, TLV_DB_MINMAX_ITEM(-2475, -2324),
-+		17, 19, TLV_DB_MINMAX_ITEM(-2228, -2031),
-+		20, 26, TLV_DB_MINMAX_ITEM(-1910, -1393),
-+		27, 31, TLV_DB_MINMAX_ITEM(-1322, -1032),
-+		32, 40, TLV_DB_MINMAX_ITEM(-968, -490),
-+		41, 50, TLV_DB_MINMAX_ITEM(-441, 0),
-+	);
-+
-+	for (list = mixer->id_elems[unit_id]; list; list = list->next_id_elem) {
-+		cval = (struct usb_mixer_elem_info *)list;
-+		if (cval->control == UAC_FU_VOLUME &&
-+		    cval->min == 0 && cval->max == 50) {
-+			usb_audio_info(mixer->chip, "applying DragonFly dB scale quirk\n");
-+			list->kctl->tlv.p = scale;
-+			list->kctl->vd[0].access |=  SNDRV_CTL_ELEM_ACCESS_TLV_READ;
-+			list->kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
-+		}
-+	}
-+}
-+
- int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
- {
- 	int err = 0;
-@@ -1792,6 +1825,10 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
- 	case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */
- 		err = snd_scarlett_controls_create(mixer);
- 		break;
-+
-+	case USB_ID(0x21b4, 0x0081): /* AudioQuest DragonFly */
-+		snd_dragonfly_quirk_db_scale(mixer);
-+		break;
- 	}
- 
- 	return err;
--- 
-2.5.3
-