linux-kernel - [PATCH 02/10] ASoC: tegra: CIF: Add Tegra264 support

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Message-ID: <20250422072805.501152-3-sheetal@nvidia.com>
Date: Tue, 22 Apr 2025 07:27:57 +0000
From: "Sheetal ." <sheetal@...dia.com>
To: <broonie@...nel.org>, <linux-sound@...r.kernel.org>
CC: <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<jonathanh@...dia.com>, <thierry.reding@...il.com>, <mkumard@...dia.com>,
	<spujar@...dia.com>, Sheetal <sheetal@...dia.com>
Subject: [PATCH 02/10] ASoC: tegra: CIF: Add Tegra264 support

From: Sheetal <sheetal@...dia.com>

In Tegra264, the CIF register data bit positions are changed for I2S,
AMX, ADX and ADMAIF AHUB modules, as they now support a maximum of
32 channels. tegra264_set_cif API added to set the CIF for IPs supporting
32 channels.

Signed-off-by: Sheetal <sheetal@...dia.com>
---
 sound/soc/tegra/tegra_cif.h | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/sound/soc/tegra/tegra_cif.h b/sound/soc/tegra/tegra_cif.h
index 7cca8068f4b5..916aa10d8af8 100644
--- a/sound/soc/tegra/tegra_cif.h
+++ b/sound/soc/tegra/tegra_cif.h
@@ -1,8 +1,7 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * tegra_cif.h - TEGRA Audio CIF Programming
+/* SPDX-License-Identifier: GPL-2.0-only
+ * SPDX-FileCopyrightText: Copyright (c) 2020-2025 NVIDIA CORPORATION. All rights reserved.
  *
- * Copyright (c) 2020 NVIDIA CORPORATION.  All rights reserved.
+ * tegra_cif.h - TEGRA Audio CIF Programming
  *
  */
 
@@ -22,6 +21,10 @@
 #define TEGRA_ACIF_CTRL_TRUNCATE_SHIFT		1
 #define TEGRA_ACIF_CTRL_MONO_CONV_SHIFT		0
 
+#define TEGRA264_ACIF_CTRL_AUDIO_BITS_SHIFT	11
+#define TEGRA264_ACIF_CTRL_CLIENT_CH_SHIFT	14
+#define TEGRA264_ACIF_CTRL_AUDIO_CH_SHIFT	19
+
 /* AUDIO/CLIENT_BITS values */
 #define TEGRA_ACIF_BITS_8			1
 #define TEGRA_ACIF_BITS_16			3
@@ -62,4 +65,23 @@ static inline void tegra_set_cif(struct regmap *regmap, unsigned int reg,
 	regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value);
 }
 
+static inline void tegra264_set_cif(struct regmap *regmap, unsigned int reg,
+				    struct tegra_cif_conf *conf)
+{
+	unsigned int value;
+
+	value = (conf->threshold << TEGRA_ACIF_CTRL_FIFO_TH_SHIFT) |
+		((conf->audio_ch - 1) << TEGRA264_ACIF_CTRL_AUDIO_CH_SHIFT) |
+		((conf->client_ch - 1) << TEGRA264_ACIF_CTRL_CLIENT_CH_SHIFT) |
+		(conf->audio_bits << TEGRA264_ACIF_CTRL_AUDIO_BITS_SHIFT) |
+		(conf->client_bits << TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT) |
+		(conf->expand << TEGRA_ACIF_CTRL_EXPAND_SHIFT) |
+		(conf->stereo_conv << TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT) |
+		(conf->replicate << TEGRA_ACIF_CTRL_REPLICATE_SHIFT) |
+		(conf->truncate << TEGRA_ACIF_CTRL_TRUNCATE_SHIFT) |
+		(conf->mono_conv << TEGRA_ACIF_CTRL_MONO_CONV_SHIFT);
+
+	regmap_update_bits(regmap, reg, TEGRA_ACIF_UPDATE_MASK, value);
+}
+
 #endif
-- 
2.17.1