On 20/02/2020 06:34, Sameer Pujar wrote:
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
sound/soc/tegra/tegra_cif.h | 63 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 sound/soc/tegra/tegra_cif.h
diff --git a/sound/soc/tegra/tegra_cif.h b/sound/soc/tegra/tegra_cif.h new file mode 100644 index 0000000..ecc0850 --- /dev/null +++ b/sound/soc/tegra/tegra_cif.h @@ -0,0 +1,63 @@ +/* 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__
+#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
Reviewed-by: Jon Hunter jonathanh@nvidia.com
Cheers! Jon