xref: /linux/sound/soc/fsl/fsl_aud2htx.h (revision cdd38c5f1ce4398ec58fec95904b75824daab7b5)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright 2020 NXP
4  */
5 
6 #ifndef _FSL_AUD2HTX_H
7 #define _FSL_AUD2HTX_H
8 
9 #define FSL_AUD2HTX_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | \
10 			     SNDRV_PCM_FMTBIT_S32_LE)
11 
12 /* AUD2HTX Register Map */
13 #define AUD2HTX_CTRL          0x0   /* AUD2HTX Control Register */
14 #define AUD2HTX_CTRL_EXT      0x4   /* AUD2HTX Control Extended Register */
15 #define AUD2HTX_WR            0x8   /* AUD2HTX Write Register */
16 #define AUD2HTX_STATUS        0xC   /* AUD2HTX Status Register */
17 #define AUD2HTX_IRQ_NOMASK    0x10  /* AUD2HTX Nonmasked Interrupt Flags Register */
18 #define AUD2HTX_IRQ_MASKED    0x14  /* AUD2HTX Masked Interrupt Flags Register */
19 #define AUD2HTX_IRQ_MASK      0x18  /* AUD2HTX IRQ Masks Register */
20 
21 /* AUD2HTX Control Register */
22 #define AUD2HTX_CTRL_EN          BIT(0)
23 
24 /* AUD2HTX Control Extended Register */
25 #define AUD2HTX_CTRE_DE          BIT(0)
26 #define AUD2HTX_CTRE_DT_SHIFT    0x1
27 #define AUD2HTX_CTRE_DT_WIDTH    0x2
28 #define AUD2HTX_CTRE_DT_MASK     ((BIT(AUD2HTX_CTRE_DT_WIDTH) - 1) \
29 				 << AUD2HTX_CTRE_DT_SHIFT)
30 #define AUD2HTX_CTRE_WL_SHIFT    16
31 #define AUD2HTX_CTRE_WL_WIDTH    5
32 #define AUD2HTX_CTRE_WL_MASK     ((BIT(AUD2HTX_CTRE_WL_WIDTH) - 1) \
33 				 << AUD2HTX_CTRE_WL_SHIFT)
34 #define AUD2HTX_CTRE_WH_SHIFT    24
35 #define AUD2HTX_CTRE_WH_WIDTH    5
36 #define AUD2HTX_CTRE_WH_MASK     ((BIT(AUD2HTX_CTRE_WH_WIDTH) - 1) \
37 				 << AUD2HTX_CTRE_WH_SHIFT)
38 
39 /* AUD2HTX IRQ Masks Register */
40 #define AUD2HTX_WM_HIGH_IRQ_MASK BIT(2)
41 #define AUD2HTX_WM_LOW_IRQ_MASK  BIT(1)
42 #define AUD2HTX_OVF_MASK         BIT(0)
43 
44 #define AUD2HTX_FIFO_DEPTH       0x20
45 #define AUD2HTX_WTMK_LOW         0x10
46 #define AUD2HTX_WTMK_HIGH        0x10
47 #define AUD2HTX_MAXBURST         0x10
48 
49 /**
50  * fsl_aud2htx: AUD2HTX private data
51  *
52  * @pdev: platform device pointer
53  * @regmap: regmap handler
54  * @bus_clk: clock source to access register
55  * @dma_params_rx: DMA parameters for receive channel
56  * @dma_params_tx: DMA parameters for transmit channel
57  */
58 struct fsl_aud2htx {
59 	struct platform_device *pdev;
60 	struct regmap *regmap;
61 	struct clk *bus_clk;
62 
63 	struct snd_dmaengine_dai_dma_data dma_params_rx;
64 	struct snd_dmaengine_dai_dma_data dma_params_tx;
65 };
66 
67 #endif /* _FSL_AUD2HTX_H */
68