127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* tegra210_i2s.h - Definitions for Tegra210 I2S driver
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*
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* Copyright (c) 2020 NVIDIA CORPORATION. All rights reserved.
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*
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*/
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#ifndef __TEGRA210_I2S_H__
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#define __TEGRA210_I2S_H__
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/* Register offsets from I2S*_BASE */
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#define TEGRA210_I2S_RX_ENABLE 0x0
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#define TEGRA210_I2S_RX_SOFT_RESET 0x4
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#define TEGRA210_I2S_RX_STATUS 0x0c
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#define TEGRA210_I2S_RX_INT_STATUS 0x10
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#define TEGRA210_I2S_RX_INT_MASK 0x14
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#define TEGRA210_I2S_RX_INT_SET 0x18
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#define TEGRA210_I2S_RX_INT_CLEAR 0x1c
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#define TEGRA210_I2S_RX_CIF_CTRL 0x20
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#define TEGRA210_I2S_RX_CTRL 0x24
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#define TEGRA210_I2S_RX_SLOT_CTRL 0x28
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#define TEGRA210_I2S_RX_CLK_TRIM 0x2c
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#define TEGRA210_I2S_RX_CYA 0x30
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#define TEGRA210_I2S_RX_CIF_FIFO_STATUS 0x34
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#define TEGRA210_I2S_TX_ENABLE 0x40
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#define TEGRA210_I2S_TX_SOFT_RESET 0x44
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#define TEGRA210_I2S_TX_STATUS 0x4c
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#define TEGRA210_I2S_TX_INT_STATUS 0x50
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#define TEGRA210_I2S_TX_INT_MASK 0x54
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#define TEGRA210_I2S_TX_INT_SET 0x58
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#define TEGRA210_I2S_TX_INT_CLEAR 0x5c
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#define TEGRA210_I2S_TX_CIF_CTRL 0x60
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#define TEGRA210_I2S_TX_CTRL 0x64
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#define TEGRA210_I2S_TX_SLOT_CTRL 0x68
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#define TEGRA210_I2S_TX_CLK_TRIM 0x6c
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#define TEGRA210_I2S_TX_CYA 0x70
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#define TEGRA210_I2S_TX_CIF_FIFO_STATUS 0x74
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#define TEGRA210_I2S_ENABLE 0x80
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#define TEGRA210_I2S_SOFT_RESET 0x84
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#define TEGRA210_I2S_CG 0x88
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#define TEGRA210_I2S_STATUS 0x8c
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#define TEGRA210_I2S_INT_STATUS 0x90
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#define TEGRA210_I2S_CTRL 0xa0
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#define TEGRA210_I2S_TIMING 0xa4
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#define TEGRA210_I2S_SLOT_CTRL 0xa8
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#define TEGRA210_I2S_CLK_TRIM 0xac
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#define TEGRA210_I2S_CYA 0xb0
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/* Bit fields, shifts and masks */
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#define I2S_DATA_SHIFT 8
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#define I2S_CTRL_DATA_OFFSET_MASK (0x7ff << I2S_DATA_SHIFT)
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#define I2S_EN_SHIFT 0
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#define I2S_EN_MASK BIT(I2S_EN_SHIFT)
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#define I2S_EN BIT(I2S_EN_SHIFT)
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#define I2S_FSYNC_WIDTH_SHIFT 24
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#define I2S_CTRL_FSYNC_WIDTH_MASK (0xff << I2S_FSYNC_WIDTH_SHIFT)
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#define I2S_POS_EDGE 0
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#define I2S_NEG_EDGE 1
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#define I2S_EDGE_SHIFT 20
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#define I2S_CTRL_EDGE_CTRL_MASK BIT(I2S_EDGE_SHIFT)
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#define I2S_CTRL_EDGE_CTRL_POS_EDGE (I2S_POS_EDGE << I2S_EDGE_SHIFT)
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#define I2S_CTRL_EDGE_CTRL_NEG_EDGE (I2S_NEG_EDGE << I2S_EDGE_SHIFT)
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#define I2S_FMT_LRCK 0
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#define I2S_FMT_FSYNC 1
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#define I2S_FMT_SHIFT 12
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#define I2S_CTRL_FRAME_FMT_MASK (7 << I2S_FMT_SHIFT)
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#define I2S_CTRL_FRAME_FMT_LRCK_MODE (I2S_FMT_LRCK << I2S_FMT_SHIFT)
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#define I2S_CTRL_FRAME_FMT_FSYNC_MODE (I2S_FMT_FSYNC << I2S_FMT_SHIFT)
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#define I2S_CTRL_MASTER_EN_SHIFT 10
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#define I2S_CTRL_MASTER_EN_MASK BIT(I2S_CTRL_MASTER_EN_SHIFT)
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#define I2S_CTRL_MASTER_EN BIT(I2S_CTRL_MASTER_EN_SHIFT)
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#define I2S_CTRL_LRCK_POL_SHIFT 9
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#define I2S_CTRL_LRCK_POL_MASK BIT(I2S_CTRL_LRCK_POL_SHIFT)
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#define I2S_CTRL_LRCK_POL_LOW (0 << I2S_CTRL_LRCK_POL_SHIFT)
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#define I2S_CTRL_LRCK_POL_HIGH BIT(I2S_CTRL_LRCK_POL_SHIFT)
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#define I2S_CTRL_LPBK_SHIFT 8
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#define I2S_CTRL_LPBK_MASK BIT(I2S_CTRL_LPBK_SHIFT)
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#define I2S_CTRL_LPBK_EN BIT(I2S_CTRL_LPBK_SHIFT)
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#define I2S_BITS_8 1
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#define I2S_BITS_16 3
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#define I2S_BITS_32 7
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#define I2S_CTRL_BIT_SIZE_MASK 0x7
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#define I2S_TIMING_CH_BIT_CNT_MASK 0x7ff
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#define I2S_TIMING_CH_BIT_CNT_SHIFT 0
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#define I2S_SOFT_RESET_SHIFT 0
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#define I2S_SOFT_RESET_MASK BIT(I2S_SOFT_RESET_SHIFT)
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#define I2S_SOFT_RESET_EN BIT(I2S_SOFT_RESET_SHIFT)
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#define I2S_RX_FIFO_DEPTH 64
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#define DEFAULT_I2S_RX_FIFO_THRESHOLD 3
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#define DEFAULT_I2S_SLOT_MASK 0xffff
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enum tegra210_i2s_path {
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I2S_RX_PATH,
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I2S_TX_PATH,
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I2S_PATHS,
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};
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struct tegra210_i2s {
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struct clk *clk_i2s;
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struct clk *clk_sync_input;
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struct regmap *regmap;
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unsigned int stereo_to_mono[I2S_PATHS];
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unsigned int mono_to_stereo[I2S_PATHS];
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unsigned int dai_fmt;
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unsigned int fsync_width;
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unsigned int bclk_ratio;
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unsigned int tx_mask;
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unsigned int rx_mask;
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unsigned int rx_fifo_th;
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bool loopback;
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};
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#endif
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