[PATCH 6.6 55/76] ALSA: hda/tegra: Add Tegra264 support

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mohan Kumar D <mkumard@nvidia.com>

commit 1c4193917eb3279788968639f24d72ffeebdec6b upstream.

Update HDA driver to support Tegra264 differences from legacy HDA,
which includes: clocks/resets, always power on, and hardware-managed
FPCI/IPFS initialization. The driver retrieves this chip-specific
information from soc_data.

Signed-off-by: Mohan Kumar D <mkumard@nvidia.com>
Signed-off-by: Sheetal <sheetal@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250512064258.1028331-4-sheetal@nvidia.com
Stable-dep-of: e0a911ac8685 ("ALSA: hda: Add missing NVIDIA HDA codec IDs")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/hda_tegra.c  |   51 +++++++++++++++++++++++++++++++++++++++------
 sound/pci/hda/patch_hdmi.c |    1 
 2 files changed, 46 insertions(+), 6 deletions(-)

--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -72,6 +72,10 @@
 struct hda_tegra_soc {
 	bool has_hda2codec_2x_reset;
 	bool has_hda2hdmi;
+	bool has_hda2codec_2x;
+	bool input_stream;
+	bool always_on;
+	bool requires_init;
 };
 
 struct hda_tegra {
@@ -187,7 +191,9 @@ static int __maybe_unused hda_tegra_runt
 	if (rc != 0)
 		return rc;
 	if (chip->running) {
-		hda_tegra_init(hda);
+		if (hda->soc->requires_init)
+			hda_tegra_init(hda);
+
 		azx_init_chip(chip, 1);
 		/* disable controller wake up event*/
 		azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
@@ -252,7 +258,8 @@ static int hda_tegra_init_chip(struct az
 	bus->remap_addr = hda->regs + HDA_BAR0;
 	bus->addr = res->start + HDA_BAR0;
 
-	hda_tegra_init(hda);
+	if (hda->soc->requires_init)
+		hda_tegra_init(hda);
 
 	return 0;
 }
@@ -325,7 +332,7 @@ static int hda_tegra_first_init(struct a
 	 * starts with offset 0 which is wrong as HW register for output stream
 	 * offset starts with 4.
 	 */
-	if (of_device_is_compatible(np, "nvidia,tegra234-hda"))
+	if (!hda->soc->input_stream)
 		chip->capture_streams = 4;
 
 	chip->playback_streams = (gcap >> 12) & 0x0f;
@@ -421,7 +428,6 @@ static int hda_tegra_create(struct snd_c
 	chip->driver_caps = driver_caps;
 	chip->driver_type = driver_caps & 0xff;
 	chip->dev_index = 0;
-	chip->jackpoll_interval = msecs_to_jiffies(5000);
 	INIT_LIST_HEAD(&chip->pcm_list);
 
 	chip->codec_probe_mask = -1;
@@ -438,7 +444,16 @@ static int hda_tegra_create(struct snd_c
 	chip->bus.core.sync_write = 0;
 	chip->bus.core.needs_damn_long_delay = 1;
 	chip->bus.core.aligned_mmio = 1;
-	chip->bus.jackpoll_in_suspend = 1;
+
+	/*
+	 * HDA power domain and clocks are always on for Tegra264 and
+	 * the jack detection logic would work always, so no need of
+	 * jack polling mechanism running.
+	 */
+	if (!hda->soc->always_on) {
+		chip->jackpoll_interval = msecs_to_jiffies(5000);
+		chip->bus.jackpoll_in_suspend = 1;
+	}
 
 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 	if (err < 0) {
@@ -452,22 +467,44 @@ static int hda_tegra_create(struct snd_c
 static const struct hda_tegra_soc tegra30_data = {
 	.has_hda2codec_2x_reset = true,
 	.has_hda2hdmi = true,
+	.has_hda2codec_2x = true,
+	.input_stream = true,
+	.always_on = false,
+	.requires_init = true,
 };
 
 static const struct hda_tegra_soc tegra194_data = {
 	.has_hda2codec_2x_reset = false,
 	.has_hda2hdmi = true,
+	.has_hda2codec_2x = true,
+	.input_stream = true,
+	.always_on = false,
+	.requires_init = true,
 };
 
 static const struct hda_tegra_soc tegra234_data = {
 	.has_hda2codec_2x_reset = true,
 	.has_hda2hdmi = false,
+	.has_hda2codec_2x = true,
+	.input_stream = false,
+	.always_on = false,
+	.requires_init = true,
+};
+
+static const struct hda_tegra_soc tegra264_data = {
+	.has_hda2codec_2x_reset = true,
+	.has_hda2hdmi = false,
+	.has_hda2codec_2x = false,
+	.input_stream = false,
+	.always_on = true,
+	.requires_init = false,
 };
 
 static const struct of_device_id hda_tegra_match[] = {
 	{ .compatible = "nvidia,tegra30-hda", .data = &tegra30_data },
 	{ .compatible = "nvidia,tegra194-hda", .data = &tegra194_data },
 	{ .compatible = "nvidia,tegra234-hda", .data = &tegra234_data },
+	{ .compatible = "nvidia,tegra264-hda", .data = &tegra264_data },
 	{},
 };
 MODULE_DEVICE_TABLE(of, hda_tegra_match);
@@ -522,7 +559,9 @@ static int hda_tegra_probe(struct platfo
 	hda->clocks[hda->nclocks++].id = "hda";
 	if (hda->soc->has_hda2hdmi)
 		hda->clocks[hda->nclocks++].id = "hda2hdmi";
-	hda->clocks[hda->nclocks++].id = "hda2codec_2x";
+
+	if (hda->soc->has_hda2codec_2x)
+		hda->clocks[hda->nclocks++].id = "hda2codec_2x";
 
 	err = devm_clk_bulk_get(&pdev->dev, hda->nclocks, hda->clocks);
 	if (err < 0)
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -4559,6 +4559,7 @@ HDA_CODEC_ENTRY(0x10de002e, "Tegra186 HD
 HDA_CODEC_ENTRY(0x10de002f, "Tegra194 HDMI/DP2", patch_tegra_hdmi),
 HDA_CODEC_ENTRY(0x10de0030, "Tegra194 HDMI/DP3", patch_tegra_hdmi),
 HDA_CODEC_ENTRY(0x10de0031, "Tegra234 HDMI/DP", patch_tegra234_hdmi),
+HDA_CODEC_ENTRY(0x10de0034, "Tegra264 HDMI/DP",	patch_tegra234_hdmi),
 HDA_CODEC_ENTRY(0x10de0040, "GPU 40 HDMI/DP",	patch_nvhdmi),
 HDA_CODEC_ENTRY(0x10de0041, "GPU 41 HDMI/DP",	patch_nvhdmi),
 HDA_CODEC_ENTRY(0x10de0042, "GPU 42 HDMI/DP",	patch_nvhdmi),