| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */
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| 2 | /*
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| 3 | * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com)
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| 4 | */
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| 5 |
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| 6 | #ifndef __SOUND_DESIGNWARE_I2S_H
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| 7 | #define __SOUND_DESIGNWARE_I2S_H
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| 8 |
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| 9 | #include <linux/dmaengine.h>
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| 10 | #include <linux/types.h>
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| 11 |
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| 12 | /*
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| 13 | * struct i2s_clk_config_data - represent i2s clk configuration data
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| 14 | * @chan_nr: number of channel
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| 15 | * @data_width: number of bits per sample (8/16/24/32 bit)
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| 16 | * @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz)
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| 17 | */
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| 18 | struct i2s_clk_config_data {
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| 19 | int chan_nr;
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| 20 | u32 data_width;
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| 21 | u32 sample_rate;
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| 22 | };
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| 23 |
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| 24 | struct dw_i2s_dev;
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| 25 |
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| 26 | struct i2s_platform_data {
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| 27 | #define DWC_I2S_PLAY (1 << 0)
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| 28 | #define DWC_I2S_RECORD (1 << 1)
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| 29 | #define DW_I2S_SLAVE (1 << 2)
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| 30 | #define DW_I2S_MASTER (1 << 3)
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| 31 | unsigned int cap;
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| 32 | int channel;
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| 33 | u32 snd_fmts;
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| 34 | u32 snd_rates;
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| 35 |
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| 36 | #define DW_I2S_QUIRK_COMP_REG_OFFSET (1 << 0)
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| 37 | #define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1)
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| 38 | #define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2)
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| 39 | unsigned int quirks;
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| 40 | unsigned int i2s_reg_comp1;
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| 41 | unsigned int i2s_reg_comp2;
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| 42 |
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| 43 | void *play_dma_data;
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| 44 | void *capture_dma_data;
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| 45 | bool (*filter)(struct dma_chan *chan, void *slave);
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| 46 | int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
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| 47 | int (*i2s_pd_init)(struct dw_i2s_dev *dev);
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| 48 | };
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| 49 |
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| 50 | struct i2s_dma_data {
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| 51 | void *data;
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| 52 | dma_addr_t addr;
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| 53 | u32 max_burst;
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| 54 | enum dma_slave_buswidth addr_width;
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| 55 | bool (*filter)(struct dma_chan *chan, void *slave);
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| 56 | };
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| 57 |
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| 58 | /* I2S DMA registers */
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| 59 | #define I2S_RXDMA 0x01C0
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| 60 | #define I2S_TXDMA 0x01C8
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| 61 |
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| 62 | #define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */
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| 63 | #define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */
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| 64 | #define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */
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| 65 | #define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */
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| 66 |
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| 67 | #endif /* __SOUND_DESIGNWARE_I2S_H */
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