From dc50eab76b709d68175a358d6e23a5a3890764d3 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 18 May 2024 19:39:57 +0200
Subject: Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 sound/hda/ext/hdac_ext_stream.c | 43 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'sound/hda/ext')

diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c
index 11b7119cc4..a3ac738f11 100644
--- a/sound/hda/ext/hdac_ext_stream.c
+++ b/sound/hda/ext/hdac_ext_stream.c
@@ -10,12 +10,47 @@
  */
 
 #include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
 #include <linux/slab.h>
 #include <sound/pcm.h>
 #include <sound/hda_register.h>
 #include <sound/hdaudio_ext.h>
 #include <sound/compress_driver.h>
 
+/**
+ * snd_hdac_ext_host_stream_setup - Setup a HOST stream.
+ * @hext_stream: HDAudio stream to set up.
+ * @code_loading: Whether the stream is for PCM or code-loading.
+ *
+ * Return: Zero on success or negative error code.
+ */
+int snd_hdac_ext_host_stream_setup(struct hdac_ext_stream *hext_stream, bool code_loading)
+{
+	return hext_stream->host_setup(hdac_stream(hext_stream), code_loading);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_host_stream_setup);
+
+/**
+ * snd_hdac_apl_host_stream_setup - Setup a HOST stream following procedure
+ *                                  recommended for ApolloLake devices.
+ * @hstream: HDAudio stream to set up.
+ * @code_loading: Whether the stream is for PCM or code-loading.
+ *
+ * Return: Zero on success or negative error code.
+ */
+static int snd_hdac_apl_host_stream_setup(struct hdac_stream *hstream, bool code_loading)
+{
+	struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
+	int ret;
+
+	snd_hdac_ext_stream_decouple(hstream->bus, hext_stream, false);
+	ret = snd_hdac_stream_setup(hstream, code_loading);
+	snd_hdac_ext_stream_decouple(hstream->bus, hext_stream, true);
+
+	return ret;
+}
+
 /**
  * snd_hdac_ext_stream_init - initialize each stream (aka device)
  * @bus: HD-audio core bus
@@ -55,9 +90,16 @@ static void snd_hdac_ext_stream_init(struct hdac_bus *bus,
 int snd_hdac_ext_stream_init_all(struct hdac_bus *bus, int start_idx,
 				 int num_stream, int dir)
 {
+	struct pci_dev *pci = to_pci_dev(bus->dev);
+	int (*setup_op)(struct hdac_stream *, bool);
 	int stream_tag = 0;
 	int i, tag, idx = start_idx;
 
+	if (pci->device == PCI_DEVICE_ID_INTEL_HDA_APL)
+		setup_op = snd_hdac_apl_host_stream_setup;
+	else
+		setup_op = snd_hdac_stream_setup;
+
 	for (i = 0; i < num_stream; i++) {
 		struct hdac_ext_stream *hext_stream =
 				kzalloc(sizeof(*hext_stream), GFP_KERNEL);
@@ -66,6 +108,7 @@ int snd_hdac_ext_stream_init_all(struct hdac_bus *bus, int start_idx,
 		tag = ++stream_tag;
 		snd_hdac_ext_stream_init(bus, hext_stream, idx, dir, tag);
 		idx++;
+		hext_stream->host_setup = setup_op;
 	}
 
 	return 0;
-- 
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