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

 
 1/*
 2 * Copyright (ST) 2012 Rajeev Kumar (rajeev-dlh.kumar@st.com)
 3 *
 4 * This program is free software; you can redistribute it and/or modify
 5 * it under the terms of the GNU General Public License as published by
 6 * the Free Software Foundation; either version 2 of the License, or
 7 * (at your option) any later version.
 8 *
 9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
19
20#ifndef __SOUND_DESIGNWARE_I2S_H
21#define __SOUND_DESIGNWARE_I2S_H
22
23#include <linux/dmaengine.h>
24#include <linux/types.h>
25
26/*
27 * struct i2s_clk_config_data - represent i2s clk configuration data
28 * @chan_nr: number of channel
29 * @data_width: number of bits per sample (8/16/24/32 bit)
30 * @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz)
31 */
32struct i2s_clk_config_data {
33	int chan_nr;
34	u32 data_width;
35	u32 sample_rate;
36};
37
 
 
38struct i2s_platform_data {
39	#define DWC_I2S_PLAY	(1 << 0)
40	#define DWC_I2S_RECORD	(1 << 1)
 
 
41	unsigned int cap;
42	int channel;
43	u32 snd_fmts;
44	u32 snd_rates;
45
 
 
 
 
 
 
 
46	void *play_dma_data;
47	void *capture_dma_data;
48	bool (*filter)(struct dma_chan *chan, void *slave);
49	int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
 
50};
51
52struct i2s_dma_data {
53	void *data;
54	dma_addr_t addr;
55	u32 max_burst;
56	enum dma_slave_buswidth addr_width;
57	bool (*filter)(struct dma_chan *chan, void *slave);
58};
59
60/* I2S DMA registers */
61#define I2S_RXDMA		0x01C0
62#define I2S_TXDMA		0x01C8
63
64#define TWO_CHANNEL_SUPPORT	2	/* up to 2.0 */
65#define FOUR_CHANNEL_SUPPORT	4	/* up to 3.1 */
66#define SIX_CHANNEL_SUPPORT	6	/* up to 5.1 */
67#define EIGHT_CHANNEL_SUPPORT	8	/* up to 7.1 */
68
69#endif /*  __SOUND_DESIGNWARE_I2S_H */