1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1
2 /*
3 * Copyright (ST) 2012 Rajeev Kumar (rajeevkum
4 */
5
6 #ifndef __SOUND_DESIGNWARE_I2S_H
7 #define __SOUND_DESIGNWARE_I2S_H
8
9 #include <linux/dmaengine.h>
10 #include <linux/types.h>
11
12 /*
13 * struct i2s_clk_config_data - represent i2s
14 * @chan_nr: number of channel
15 * @data_width: number of bits per sample (8/1
16 * @sample_rate: sampling frequency (8Khz, 16K
17 */
18 struct i2s_clk_config_data {
19 int chan_nr;
20 u32 data_width;
21 u32 sample_rate;
22 };
23
24 struct dw_i2s_dev;
25
26 struct i2s_platform_data {
27 #define DWC_I2S_PLAY (1 << 0)
28 #define DWC_I2S_RECORD (1 << 1)
29 #define DW_I2S_SLAVE (1 << 2)
30 #define DW_I2S_MASTER (1 << 3)
31 unsigned int cap;
32 int channel;
33 u32 snd_fmts;
34 u32 snd_rates;
35
36 #define DW_I2S_QUIRK_COMP_REG_OFFSET
37 #define DW_I2S_QUIRK_COMP_PARAM1
38 #define DW_I2S_QUIRK_16BIT_IDX_OVERRID
39 unsigned int quirks;
40 unsigned int i2s_reg_comp1;
41 unsigned int i2s_reg_comp2;
42
43 void *play_dma_data;
44 void *capture_dma_data;
45 bool (*filter)(struct dma_chan *chan,
46 int (*i2s_clk_cfg)(struct i2s_clk_conf
47 int (*i2s_pd_init)(struct dw_i2s_dev *
48 };
49
50 struct i2s_dma_data {
51 void *data;
52 dma_addr_t addr;
53 u32 max_burst;
54 enum dma_slave_buswidth addr_width;
55 bool (*filter)(struct dma_chan *chan,
56 };
57
58 /* I2S DMA registers */
59 #define I2S_RXDMA 0x01C0
60 #define I2S_TXDMA 0x01C8
61
62 #define TWO_CHANNEL_SUPPORT 2 /* up
63 #define FOUR_CHANNEL_SUPPORT 4 /* up
64 #define SIX_CHANNEL_SUPPORT 6 /* up
65 #define EIGHT_CHANNEL_SUPPORT 8 /* up
66
67 #endif /* __SOUND_DESIGNWARE_I2S_H */
68
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