1/*
 2 * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.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	#define DW_I2S_SLAVE	(1 << 2)
42	#define DW_I2S_MASTER	(1 << 3)
43	unsigned int cap;
44	int channel;
45	u32 snd_fmts;
46	u32 snd_rates;
47
48	#define DW_I2S_QUIRK_COMP_REG_OFFSET	(1 << 0)
49	#define DW_I2S_QUIRK_COMP_PARAM1	(1 << 1)
50	#define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2)
51	unsigned int quirks;
52	unsigned int i2s_reg_comp1;
53	unsigned int i2s_reg_comp2;
54
55	void *play_dma_data;
56	void *capture_dma_data;
57	bool (*filter)(struct dma_chan *chan, void *slave);
58	int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
59};
60
61struct i2s_dma_data {
62	void *data;
63	dma_addr_t addr;
64	u32 max_burst;
65	enum dma_slave_buswidth addr_width;
66	bool (*filter)(struct dma_chan *chan, void *slave);
67};
68
69/* I2S DMA registers */
70#define I2S_RXDMA		0x01C0
71#define I2S_TXDMA		0x01C8
72
73#define TWO_CHANNEL_SUPPORT	2	/* up to 2.0 */
74#define FOUR_CHANNEL_SUPPORT	4	/* up to 3.1 */
75#define SIX_CHANNEL_SUPPORT	6	/* up to 5.1 */
76#define EIGHT_CHANNEL_SUPPORT	8	/* up to 7.1 */
77
78#endif /*  __SOUND_DESIGNWARE_I2S_H */