1 /**************************************************************************//**
2 *
3 * @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
4 *
5 * SPDX-License-Identifier: Apache-2.0
6 *
7 * Change Logs:
8 * Date            Author           Notes
9 * 2020-2-7        Wayne            First version
10 *
11 ******************************************************************************/
12 
13 #ifndef __DRV_I2S_H__
14 #define __DRV_I2S_H__
15 
16 #include <rtdevice.h>
17 #include "NuMicro.h"
18 #include <drv_pdma.h>
19 
20 #if !defined(NU_I2S_DMA_FIFO_SIZE)
21     #define NU_I2S_DMA_FIFO_SIZE (2048)
22 #endif
23 
24 #if !defined(NU_I2S_DMA_BUF_BLOCK_NUMBER)
25     #define NU_I2S_DMA_BUF_BLOCK_NUMBER (2)
26 #endif
27 
28 #if ( (NU_I2S_DMA_FIFO_SIZE % NU_I2S_DMA_BUF_BLOCK_NUMBER) != 0 )
29     #error "Please give an aligned definition"
30 #endif
31 #if ( NU_I2S_DMA_FIFO_SIZE < 2048 )
32     #warning "DMA FIFO too small, miss voice?"
33 #endif
34 
35 #define NU_I2S_DMA_BUF_BLOCK_SIZE (NU_I2S_DMA_FIFO_SIZE/NU_I2S_DMA_BUF_BLOCK_NUMBER)
36 
37 typedef enum
38 {
39     NU_I2S_DAI_PLAYBACK,
40     NU_I2S_DAI_CAPTURE,
41     NU_I2S_DAI_CNT
42 } E_NU_I2S_DAI;
43 
44 typedef enum
45 {
46     NU_ACODEC_ROLE_MASTER,
47     NU_ACODEC_ROLE_SLAVE,
48 } E_NU_ACODEC_ROLE;
49 
50 typedef struct
51 {
52     char *name;
53 
54     E_NU_ACODEC_ROLE role;
55 
56     struct rt_audio_configure config;
57 
58     rt_err_t (*nu_acodec_init)(void);
59 
60     rt_err_t (*nu_acodec_reset)(void);
61 
62     rt_err_t (*nu_acodec_dsp_control)(struct rt_audio_configure *config);
63 
64     rt_err_t (*nu_acodec_mixer_control)(rt_uint32_t ui32Item, rt_uint32_t ui32Value);
65 
66     rt_err_t (*nu_acodec_mixer_query)(rt_uint32_t ui32Item, rt_uint32_t *ui32Value);
67 
68 } nu_acodec_ops;
69 
70 typedef nu_acodec_ops *nu_acodec_ops_t;
71 
72 struct nu_i2s_dai
73 {
74     int16_t pdma_perp;
75     int8_t  pdma_chanid;
76     rt_uint8_t *fifo;
77     int16_t  fifo_block_idx;
78     nu_pdma_desc_t pdma_descs[NU_I2S_DMA_BUF_BLOCK_NUMBER];
79 };
80 typedef struct nu_i2s_dai *nu_i2s_dai_t;
81 
82 struct nu_i2s
83 {
84     struct rt_audio_device audio;
85     struct rt_audio_configure config;
86 
87     char *name;
88     I2S_T *i2s_base;
89     uint32_t i2s_rst;
90 
91     struct nu_i2s_dai i2s_dais[NU_I2S_DAI_CNT];
92     nu_acodec_ops_t AcodecOps;
93 };
94 typedef struct nu_i2s *nu_i2s_t;
95 
96 #endif // __DRV_I2S_H___
97