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64 lines
1.6 KiB
64 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (ST) 2012 Rajeev Kumar ([email protected]) |
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*/ |
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#ifndef __SOUND_DESIGNWARE_I2S_H |
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#define __SOUND_DESIGNWARE_I2S_H |
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#include <linux/dmaengine.h> |
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#include <linux/types.h> |
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/* |
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* struct i2s_clk_config_data - represent i2s clk configuration data |
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* @chan_nr: number of channel |
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* @data_width: number of bits per sample (8/16/24/32 bit) |
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* @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz) |
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*/ |
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struct i2s_clk_config_data { |
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int chan_nr; |
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u32 data_width; |
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u32 sample_rate; |
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}; |
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struct i2s_platform_data { |
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#define DWC_I2S_PLAY (1 << 0) |
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#define DWC_I2S_RECORD (1 << 1) |
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#define DW_I2S_SLAVE (1 << 2) |
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#define DW_I2S_MASTER (1 << 3) |
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unsigned int cap; |
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int channel; |
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u32 snd_fmts; |
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u32 snd_rates; |
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#define DW_I2S_QUIRK_COMP_REG_OFFSET (1 << 0) |
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#define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1) |
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#define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2) |
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unsigned int quirks; |
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unsigned int i2s_reg_comp1; |
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unsigned int i2s_reg_comp2; |
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void *play_dma_data; |
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void *capture_dma_data; |
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bool (*filter)(struct dma_chan *chan, void *slave); |
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int (*i2s_clk_cfg)(struct i2s_clk_config_data *config); |
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}; |
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struct i2s_dma_data { |
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void *data; |
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dma_addr_t addr; |
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u32 max_burst; |
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enum dma_slave_buswidth addr_width; |
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bool (*filter)(struct dma_chan *chan, void *slave); |
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}; |
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/* I2S DMA registers */ |
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#define I2S_RXDMA 0x01C0 |
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#define I2S_TXDMA 0x01C8 |
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#define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */ |
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#define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */ |
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#define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */ |
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#define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */ |
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#endif /* __SOUND_DESIGNWARE_I2S_H */
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