2 * Copyright (C) 2012 Samsung Electronics
3 * R. Chandrasekar <rcsekar@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
12 * DAI hardware audio formats.
14 * Describes the physical PCM data formating and clocking. Add new formats
17 #define SND_SOC_DAIFMT_I2S 1 /* I2S mode */
18 #define SND_SOC_DAIFMT_RIGHT_J 2 /* Right Justified mode */
19 #define SND_SOC_DAIFMT_LEFT_J 3 /* Left Justified mode */
20 #define SND_SOC_DAIFMT_DSP_A 4 /* L data MSB after FRM LRC */
21 #define SND_SOC_DAIFMT_DSP_B 5 /* L data MSB during FRM LRC */
22 #define SND_SOC_DAIFMT_AC97 6 /* AC97 */
23 #define SND_SOC_DAIFMT_PDM 7 /* Pulse density modulation */
25 /* left and right justified also known as MSB and LSB respectively */
26 #define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J
27 #define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J
30 * DAI hardware signal inversions.
32 * Specifies whether the DAI can also support inverted clocks for the specified
35 #define SND_SOC_DAIFMT_NB_NF (1 << 8) /* normal bit clock + frame */
36 #define SND_SOC_DAIFMT_NB_IF (2 << 8) /* normal BCLK + inv FRM */
37 #define SND_SOC_DAIFMT_IB_NF (3 << 8) /* invert BCLK + nor FRM */
38 #define SND_SOC_DAIFMT_IB_IF (4 << 8) /* invert BCLK + FRM */
41 * DAI hardware clock masters.
43 * This is wrt the codec, the inverse is true for the interface
44 * i.e. if the codec is clk and FRM master then the interface is
45 * clk and frame slave.
47 #define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & FRM master */
48 #define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk slave & FRM master */
49 #define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame slave */
50 #define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM slave */
52 #define SND_SOC_DAIFMT_FORMAT_MASK 0x000f
53 #define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0
54 #define SND_SOC_DAIFMT_INV_MASK 0x0f00
55 #define SND_SOC_DAIFMT_MASTER_MASK 0xf000
58 * Master Clock Directions
60 #define SND_SOC_CLOCK_IN 0
61 #define SND_SOC_CLOCK_OUT 1
67 #define FIFO_LENGTH 64
71 unsigned int con; /* base + 0 , Control register */
72 unsigned int mod; /* Mode register */
73 unsigned int fic; /* FIFO control register */
74 unsigned int psr; /* Reserved */
75 unsigned int txd; /* Transmit data register */
76 unsigned int rxd; /* Receive Data Register */
79 /* This structure stores the i2s related information */
81 unsigned int rfs; /* LR clock frame size */
82 unsigned int bfs; /* Bit slock frame size */
83 unsigned int audio_pll_clk; /* Audio pll frequency in Hz */
84 unsigned int samplingrate; /* sampling rate */
85 unsigned int bitspersample; /* bits per sample */
86 unsigned int channels; /* audio channels */
87 unsigned int base_address; /* I2S Register Base */
88 unsigned int id; /* I2S controller id */
92 * Sends the given data through i2s tx
94 * @param pi2s_tx pointer of i2s transmitter parameter structure.
95 * @param data address of the data buffer
96 * @param data_size array size of the int buffer (total size / size of int)
98 * @return int value 0 for success, -1 in case of error
100 int i2s_transfer_tx_data(struct i2stx_info *pi2s_tx, unsigned *data,
101 unsigned long data_size);
104 * Initialise i2s transmiter
106 * @param pi2s_tx pointer of i2s transmitter parameter structure.
108 * @return int value 0 for success, -1 in case of error
110 int i2s_tx_init(struct i2stx_info *pi2s_tx);
112 #endif /* __I2S_H__ */