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The Audio Multiplexer (AMX) block can multiplex up to four input streams each of which can have maximum 16 channels and generate an output stream with maximum 16 channels. A byte RAM helps to form an output frame by any combination of bytes from the input frames. This patch registers AMX driver with ASoC framework. The component driver exposes DAPM widgets, routes and kcontrols for the device. The DAI driver exposes AMX interfaces, which can be used to connect different components in the ASoC layer. Makefile and Kconfig support is added to allow build the driver. It can be enabled in the DT via "nvidia,tegra210-amx" for Tegra210 and Tegra186. For Tegra194 and later, "nvidia,tegra194-amx" can be used. Signed-off-by: Sameer Pujar <spujar@nvidia.com> Link: https://lore.kernel.org/r/1631551342-25469-9-git-send-email-spujar@nvidia.com Signed-off-by: Mark Brown <broonie@kernel.org>
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* tegra210_amx.h - Definitions for Tegra210 AMX driver
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*
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* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
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*
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*/
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#ifndef __TEGRA210_AMX_H__
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#define __TEGRA210_AMX_H__
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/* Register offsets from TEGRA210_AMX*_BASE */
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#define TEGRA210_AMX_RX_STATUS 0x0c
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#define TEGRA210_AMX_RX_INT_STATUS 0x10
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#define TEGRA210_AMX_RX_INT_MASK 0x14
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#define TEGRA210_AMX_RX_INT_SET 0x18
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#define TEGRA210_AMX_RX_INT_CLEAR 0x1c
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#define TEGRA210_AMX_RX1_CIF_CTRL 0x20
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#define TEGRA210_AMX_RX2_CIF_CTRL 0x24
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#define TEGRA210_AMX_RX3_CIF_CTRL 0x28
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#define TEGRA210_AMX_RX4_CIF_CTRL 0x2c
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#define TEGRA210_AMX_TX_STATUS 0x4c
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#define TEGRA210_AMX_TX_INT_STATUS 0x50
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#define TEGRA210_AMX_TX_INT_MASK 0x54
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#define TEGRA210_AMX_TX_INT_SET 0x58
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#define TEGRA210_AMX_TX_INT_CLEAR 0x5c
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#define TEGRA210_AMX_TX_CIF_CTRL 0x60
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#define TEGRA210_AMX_ENABLE 0x80
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#define TEGRA210_AMX_SOFT_RESET 0x84
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#define TEGRA210_AMX_CG 0x88
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#define TEGRA210_AMX_STATUS 0x8c
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#define TEGRA210_AMX_INT_STATUS 0x90
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#define TEGRA210_AMX_CTRL 0xa4
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#define TEGRA210_AMX_OUT_BYTE_EN0 0xa8
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#define TEGRA210_AMX_OUT_BYTE_EN1 0xac
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#define TEGRA210_AMX_CYA 0xb0
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#define TEGRA210_AMX_CFG_RAM_CTRL 0xb8
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#define TEGRA210_AMX_CFG_RAM_DATA 0xbc
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#define TEGRA194_AMX_RX1_FRAME_PERIOD 0xc0
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#define TEGRA194_AMX_RX4_FRAME_PERIOD 0xcc
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#define TEGRA194_AMX_RX4_LAST_FRAME_PERIOD 0xdc
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/* Fields in TEGRA210_AMX_ENABLE */
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#define TEGRA210_AMX_ENABLE_SHIFT 0
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/* Fields in TEGRA210_AMX_CTRL */
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#define TEGRA210_AMX_CTRL_MSTR_RX_NUM_SHIFT 14
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#define TEGRA210_AMX_CTRL_MSTR_RX_NUM_MASK (3 << TEGRA210_AMX_CTRL_MSTR_RX_NUM_SHIFT)
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#define TEGRA210_AMX_CTRL_RX_DEP_SHIFT 12
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#define TEGRA210_AMX_CTRL_RX_DEP_MASK (3 << TEGRA210_AMX_CTRL_RX_DEP_SHIFT)
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/* Fields in TEGRA210_AMX_CFG_RAM_CTRL */
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#define TEGRA210_AMX_CFG_RAM_CTRL_RW_SHIFT 14
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#define TEGRA210_AMX_CFG_RAM_CTRL_RW_WRITE (1 << TEGRA210_AMX_CFG_RAM_CTRL_RW_SHIFT)
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#define TEGRA210_AMX_CFG_RAM_CTRL_ADDR_INIT_EN_SHIFT 13
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#define TEGRA210_AMX_CFG_RAM_CTRL_ADDR_INIT_EN (1 << TEGRA210_AMX_CFG_RAM_CTRL_ADDR_INIT_EN_SHIFT)
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#define TEGRA210_AMX_CFG_RAM_CTRL_SEQ_ACCESS_EN_SHIFT 12
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#define TEGRA210_AMX_CFG_RAM_CTRL_SEQ_ACCESS_EN (1 << TEGRA210_AMX_CFG_RAM_CTRL_SEQ_ACCESS_EN_SHIFT)
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#define TEGRA210_AMX_CFG_CTRL_RAM_ADDR_SHIFT 0
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/* Fields in TEGRA210_AMX_SOFT_RESET */
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#define TEGRA210_AMX_SOFT_RESET_SOFT_EN 1
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#define TEGRA210_AMX_SOFT_RESET_SOFT_RESET_MASK TEGRA210_AMX_SOFT_RESET_SOFT_EN
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#define TEGRA210_AMX_AUDIOCIF_CH_STRIDE 4
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#define TEGRA210_AMX_RAM_DEPTH 16
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#define TEGRA210_AMX_MAP_STREAM_NUM_SHIFT 6
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#define TEGRA210_AMX_MAP_WORD_NUM_SHIFT 2
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#define TEGRA210_AMX_MAP_BYTE_NUM_SHIFT 0
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enum {
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TEGRA210_AMX_WAIT_ON_ALL,
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TEGRA210_AMX_WAIT_ON_ANY,
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};
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struct tegra210_amx_soc_data {
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const struct regmap_config *regmap_conf;
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bool auto_disable;
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};
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struct tegra210_amx {
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const struct tegra210_amx_soc_data *soc_data;
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unsigned int map[TEGRA210_AMX_RAM_DEPTH];
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struct regmap *regmap;
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unsigned int byte_mask[2];
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};
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#endif
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