Drop kernel patch.

packages/kernel/linux/patches/default/linux-020-eld-constraints-for-compressed-formats.patch

@@ -1,91 +0,0 @@
-From a2769637a9b98c6809d4d25a3a20447a3ff7b23a Mon Sep 17 00:00:00 2001
-From: Matthias Reichl <hias@horus.com>
-Date: Fri, 19 Mar 2021 12:14:17 +0100
-Subject: [PATCH] ALSA: pcm: fix ELD constraints for some compressed audio
- formats
-
-The SADs of compressed formats like AC3 and DTS contain the channel
-and sample rate info of the audio data inside the compressed stream,
-but when building constraints we must use the rates and formats used
-to pass through the stream. eg 2ch 48kHz for AC3.
-
-Signed-off-by: Matthias Reichl <hias@horus.com>
----
- sound/core/pcm_drm_eld.c | 38 +++++++++++++++++++++++++++++++++++---
- 1 file changed, 35 insertions(+), 3 deletions(-)
-
-diff --git a/sound/core/pcm_drm_eld.c b/sound/core/pcm_drm_eld.c
-index 4b5faae5d16e5..e7ec7a8b9d420 100644
---- a/sound/core/pcm_drm_eld.c
-+++ b/sound/core/pcm_drm_eld.c
-@@ -6,6 +6,7 @@
- #include <drm/drm_edid.h>
- #include <sound/pcm.h>
- #include <sound/pcm_drm_eld.h>
-+#include <linux/hdmi.h>
- 
- static const unsigned int eld_rates[] = {
- 	32000,
-@@ -17,9 +18,40 @@ static const unsigned int eld_rates[] = {
- 	192000,
- };
- 
-+static unsigned int sad_format(const u8 *sad)
-+{
-+	return (sad[0] & 0x78) >> 3;
-+}
-+
- static unsigned int sad_max_channels(const u8 *sad)
- {
--	return 1 + (sad[0] & 7);
-+	switch (sad_format(sad)) {
-+	case HDMI_AUDIO_CODING_TYPE_AC3:
-+	case HDMI_AUDIO_CODING_TYPE_DTS:
-+	case HDMI_AUDIO_CODING_TYPE_EAC3:
-+		return 2;
-+	case HDMI_AUDIO_CODING_TYPE_DTS_HD:
-+	case HDMI_AUDIO_CODING_TYPE_MLP:
-+		return 8;
-+	default:
-+		return 1 + (sad[0] & 7);
-+	}
-+}
-+
-+static unsigned int sad_rate_mask(const u8 *sad)
-+{
-+	switch (sad_format(sad)) {
-+	case HDMI_AUDIO_CODING_TYPE_AC3:
-+	case HDMI_AUDIO_CODING_TYPE_DTS:
-+		return 0x07; // 32-48kHz
-+	case HDMI_AUDIO_CODING_TYPE_EAC3:
-+		return 0x7f; // 32-192kHz
-+	case HDMI_AUDIO_CODING_TYPE_DTS_HD:
-+	case HDMI_AUDIO_CODING_TYPE_MLP:
-+		return 0x60; // 176.4, 192kHz
-+	default:
-+		return sad[1] & 0x7f;
-+	}
- }
- 
- static int eld_limit_rates(struct snd_pcm_hw_params *params,
-@@ -42,7 +74,7 @@ static int eld_limit_rates(struct snd_pcm_hw_params *params,
- 			 * requested number of channels.
- 			 */
- 			if (c->min <= max_channels)
--				rate_mask |= sad[1];
-+				rate_mask |= sad_rate_mask(sad);
- 		}
- 	}
- 
-@@ -70,7 +102,7 @@ static int eld_limit_channels(struct snd_pcm_hw_params *params,
- 				rate_mask |= BIT(i);
- 
- 		for (i = drm_eld_sad_count(eld); i > 0; i--, sad += 3)
--			if (rate_mask & sad[1])
-+			if (rate_mask & sad_rate_mask(sad))
- 				t.max = max(t.max, sad_max_channels(sad));
- 	}
- 
--- 
-2.20.1
-