UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ASoC: tegra: Add support for CIF programming 

Audio Client Interface (CIF) is a proprietary interface employed to route
audio samples through Audio Hub (AHUB) components by inter connecting the
various modules.

This patch exports an inline function tegra_set_cif() which can be used,
for now, to program CIF on Tegra210 and later Tegra generations. Later it
can be extended to include helpers for legacy chips as well.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/1595134890-16470-3-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sameer Pujar 2020-07-19 10:31:21 +05:30 committed by Mark Brown
parent 665308c0b4
commit 1c3b89fb7e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 65 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
sound/soc/tegra/tegra_cif.h Normal file
View File

@ -0,0 +1,65 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* tegra_cif.h - TEGRA Audio CIF Programming
*
* Copyright (c) 2020 NVIDIA CORPORATION. All rights reserved.
*
*/
#ifndef __TEGRA_CIF_H__
#define __TEGRA_CIF_H__
#include <linux/regmap.h>
#define TEGRA_ACIF_CTRL_FIFO_TH_SHIFT 24
#define TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT 20
#define TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT 16
#define TEGRA_ACIF_CTRL_AUDIO_BITS_SHIFT 12
#define TEGRA_ACIF_CTRL_CLIENT_BITS_SHIFT 8
#define TEGRA_ACIF_CTRL_EXPAND_SHIFT 6
#define TEGRA_ACIF_CTRL_STEREO_CONV_SHIFT 4
#define TEGRA_ACIF_CTRL_REPLICATE_SHIFT 3
#define TEGRA_ACIF_CTRL_TRUNCATE_SHIFT 1
#define TEGRA_ACIF_CTRL_MONO_CONV_SHIFT 0
/* AUDIO/CLIENT_BITS values */
#define TEGRA_ACIF_BITS_8 1
#define TEGRA_ACIF_BITS_16 3
#define TEGRA_ACIF_BITS_24 5
#define TEGRA_ACIF_BITS_32 7
#define TEGRA_ACIF_UPDATE_MASK 0x3ffffffb
struct tegra_cif_conf {
unsigned int threshold;
unsigned int audio_ch;
unsigned int client_ch;
unsigned int audio_bits;
unsigned int client_bits;
unsigned int expand;
unsigned int stereo_conv;
unsigned int replicate;
unsigned int truncate;
unsigned int mono_conv;
};
static inline void tegra_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) << TEGRA_ACIF_CTRL_AUDIO_CH_SHIFT) |
((conf->client_ch - 1) << TEGRA_ACIF_CTRL_CLIENT_CH_SHIFT) |
(conf->audio_bits << TEGRA_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