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