1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com)
6 #ifndef __SOUND_DESIGNWARE_I2S_H
7 #define __SOUND_DESIGNWARE_I2S_H
9 #include <linux/dmaengine.h>
10 #include <linux/types.h>
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)
18 struct i2s_clk_config_data {
24 struct i2s_platform_data {
25 #define DWC_I2S_PLAY (1 << 0)
26 #define DWC_I2S_RECORD (1 << 1)
27 #define DW_I2S_SLAVE (1 << 2)
28 #define DW_I2S_MASTER (1 << 3)
34 #define DW_I2S_QUIRK_COMP_REG_OFFSET (1 << 0)
35 #define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1)
36 #define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2)
38 unsigned int i2s_reg_comp1;
39 unsigned int i2s_reg_comp2;
42 void *capture_dma_data;
43 bool (*filter)(struct dma_chan *chan, void *slave);
44 int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
51 enum dma_slave_buswidth addr_width;
52 bool (*filter)(struct dma_chan *chan, void *slave);
55 /* I2S DMA registers */
56 #define I2S_RXDMA 0x01C0
57 #define I2S_TXDMA 0x01C8
59 #define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */
60 #define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */
61 #define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */
62 #define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */
64 #endif /* __SOUND_DESIGNWARE_I2S_H */