68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com)
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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 dw_i2s_dev;
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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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int (*i2s_pd_init)(struct dw_i2s_dev *dev);
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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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