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-rw-r--r--sound/soc/tegra/tegra210_i2s.h126
1 files changed, 126 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra210_i2s.h b/sound/soc/tegra/tegra210_i2s.h
new file mode 100644
index 000000000..030d70c45
--- /dev/null
+++ b/sound/soc/tegra/tegra210_i2s.h
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * tegra210_i2s.h - Definitions for Tegra210 I2S driver
+ *
+ * Copyright (c) 2020 NVIDIA CORPORATION. All rights reserved.
+ *
+ */
+
+#ifndef __TEGRA210_I2S_H__
+#define __TEGRA210_I2S_H__
+
+/* Register offsets from I2S*_BASE */
+#define TEGRA210_I2S_RX_ENABLE 0x0
+#define TEGRA210_I2S_RX_SOFT_RESET 0x4
+#define TEGRA210_I2S_RX_STATUS 0x0c
+#define TEGRA210_I2S_RX_INT_STATUS 0x10
+#define TEGRA210_I2S_RX_INT_MASK 0x14
+#define TEGRA210_I2S_RX_INT_SET 0x18
+#define TEGRA210_I2S_RX_INT_CLEAR 0x1c
+#define TEGRA210_I2S_RX_CIF_CTRL 0x20
+#define TEGRA210_I2S_RX_CTRL 0x24
+#define TEGRA210_I2S_RX_SLOT_CTRL 0x28
+#define TEGRA210_I2S_RX_CLK_TRIM 0x2c
+#define TEGRA210_I2S_RX_CYA 0x30
+#define TEGRA210_I2S_RX_CIF_FIFO_STATUS 0x34
+#define TEGRA210_I2S_TX_ENABLE 0x40
+#define TEGRA210_I2S_TX_SOFT_RESET 0x44
+#define TEGRA210_I2S_TX_STATUS 0x4c
+#define TEGRA210_I2S_TX_INT_STATUS 0x50
+#define TEGRA210_I2S_TX_INT_MASK 0x54
+#define TEGRA210_I2S_TX_INT_SET 0x58
+#define TEGRA210_I2S_TX_INT_CLEAR 0x5c
+#define TEGRA210_I2S_TX_CIF_CTRL 0x60
+#define TEGRA210_I2S_TX_CTRL 0x64
+#define TEGRA210_I2S_TX_SLOT_CTRL 0x68
+#define TEGRA210_I2S_TX_CLK_TRIM 0x6c
+#define TEGRA210_I2S_TX_CYA 0x70
+#define TEGRA210_I2S_TX_CIF_FIFO_STATUS 0x74
+#define TEGRA210_I2S_ENABLE 0x80
+#define TEGRA210_I2S_SOFT_RESET 0x84
+#define TEGRA210_I2S_CG 0x88
+#define TEGRA210_I2S_STATUS 0x8c
+#define TEGRA210_I2S_INT_STATUS 0x90
+#define TEGRA210_I2S_CTRL 0xa0
+#define TEGRA210_I2S_TIMING 0xa4
+#define TEGRA210_I2S_SLOT_CTRL 0xa8
+#define TEGRA210_I2S_CLK_TRIM 0xac
+#define TEGRA210_I2S_CYA 0xb0
+
+/* Bit fields, shifts and masks */
+#define I2S_DATA_SHIFT 8
+#define I2S_CTRL_DATA_OFFSET_MASK (0x7ff << I2S_DATA_SHIFT)
+
+#define I2S_EN_SHIFT 0
+#define I2S_EN_MASK BIT(I2S_EN_SHIFT)
+#define I2S_EN BIT(I2S_EN_SHIFT)
+
+#define I2S_FSYNC_WIDTH_SHIFT 24
+#define I2S_CTRL_FSYNC_WIDTH_MASK (0xff << I2S_FSYNC_WIDTH_SHIFT)
+
+#define I2S_POS_EDGE 0
+#define I2S_NEG_EDGE 1
+#define I2S_EDGE_SHIFT 20
+#define I2S_CTRL_EDGE_CTRL_MASK BIT(I2S_EDGE_SHIFT)
+#define I2S_CTRL_EDGE_CTRL_POS_EDGE (I2S_POS_EDGE << I2S_EDGE_SHIFT)
+#define I2S_CTRL_EDGE_CTRL_NEG_EDGE (I2S_NEG_EDGE << I2S_EDGE_SHIFT)
+
+#define I2S_FMT_LRCK 0
+#define I2S_FMT_FSYNC 1
+#define I2S_FMT_SHIFT 12
+#define I2S_CTRL_FRAME_FMT_MASK (7 << I2S_FMT_SHIFT)
+#define I2S_CTRL_FRAME_FMT_LRCK_MODE (I2S_FMT_LRCK << I2S_FMT_SHIFT)
+#define I2S_CTRL_FRAME_FMT_FSYNC_MODE (I2S_FMT_FSYNC << I2S_FMT_SHIFT)
+
+#define I2S_CTRL_MASTER_EN_SHIFT 10
+#define I2S_CTRL_MASTER_EN_MASK BIT(I2S_CTRL_MASTER_EN_SHIFT)
+#define I2S_CTRL_MASTER_EN BIT(I2S_CTRL_MASTER_EN_SHIFT)
+
+#define I2S_CTRL_LRCK_POL_SHIFT 9
+#define I2S_CTRL_LRCK_POL_MASK BIT(I2S_CTRL_LRCK_POL_SHIFT)
+#define I2S_CTRL_LRCK_POL_LOW (0 << I2S_CTRL_LRCK_POL_SHIFT)
+#define I2S_CTRL_LRCK_POL_HIGH BIT(I2S_CTRL_LRCK_POL_SHIFT)
+
+#define I2S_CTRL_LPBK_SHIFT 8
+#define I2S_CTRL_LPBK_MASK BIT(I2S_CTRL_LPBK_SHIFT)
+#define I2S_CTRL_LPBK_EN BIT(I2S_CTRL_LPBK_SHIFT)
+
+#define I2S_BITS_8 1
+#define I2S_BITS_16 3
+#define I2S_BITS_32 7
+#define I2S_CTRL_BIT_SIZE_MASK 0x7
+
+#define I2S_TIMING_CH_BIT_CNT_MASK 0x7ff
+#define I2S_TIMING_CH_BIT_CNT_SHIFT 0
+
+#define I2S_SOFT_RESET_SHIFT 0
+#define I2S_SOFT_RESET_MASK BIT(I2S_SOFT_RESET_SHIFT)
+#define I2S_SOFT_RESET_EN BIT(I2S_SOFT_RESET_SHIFT)
+
+#define I2S_RX_FIFO_DEPTH 64
+#define DEFAULT_I2S_RX_FIFO_THRESHOLD 3
+
+#define DEFAULT_I2S_SLOT_MASK 0xffff
+
+enum tegra210_i2s_path {
+ I2S_RX_PATH,
+ I2S_TX_PATH,
+ I2S_PATHS,
+};
+
+struct tegra210_i2s {
+ struct clk *clk_i2s;
+ struct clk *clk_sync_input;
+ struct regmap *regmap;
+ unsigned int stereo_to_mono[I2S_PATHS];
+ unsigned int mono_to_stereo[I2S_PATHS];
+ unsigned int dai_fmt;
+ unsigned int fsync_width;
+ unsigned int bclk_ratio;
+ unsigned int tx_mask;
+ unsigned int rx_mask;
+ unsigned int rx_fifo_th;
+ bool loopback;
+};
+
+#endif