1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com) |
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 clk configuration data |
14 | * @chan_nr: number of channel |
15 | * @data_width: number of bits per sample (8/16/24/32 bit) |
16 | * @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz) |
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 (1 << 0) |
37 | #define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1) |
38 | #define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2) |
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, void *slave); |
46 | int (*i2s_clk_cfg)(struct i2s_clk_config_data *config); |
47 | int (*i2s_pd_init)(struct dw_i2s_dev *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, void *slave); |
56 | }; |
57 | |
58 | /* I2S DMA registers */ |
59 | #define I2S_RXDMA 0x01C0 |
60 | #define I2S_TXDMA 0x01C8 |
61 | |
62 | #define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */ |
63 | #define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */ |
64 | #define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */ |
65 | #define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */ |
66 | |
67 | #endif /* __SOUND_DESIGNWARE_I2S_H */ |
68 | |