1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* 1 /*
3 * Copyright (ST) 2012 Rajeev Kumar (rajeevkum 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 *
4 */ 18 */
5 19
6 #ifndef __SOUND_DESIGNWARE_I2S_H 20 #ifndef __SOUND_DESIGNWARE_I2S_H
7 #define __SOUND_DESIGNWARE_I2S_H 21 #define __SOUND_DESIGNWARE_I2S_H
8 22
9 #include <linux/dmaengine.h> 23 #include <linux/dmaengine.h>
10 #include <linux/types.h> 24 #include <linux/types.h>
11 25
12 /* 26 /*
13 * struct i2s_clk_config_data - represent i2s 27 * struct i2s_clk_config_data - represent i2s clk configuration data
14 * @chan_nr: number of channel 28 * @chan_nr: number of channel
15 * @data_width: number of bits per sample (8/1 29 * @data_width: number of bits per sample (8/16/24/32 bit)
16 * @sample_rate: sampling frequency (8Khz, 16K 30 * @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz)
17 */ 31 */
18 struct i2s_clk_config_data { 32 struct i2s_clk_config_data {
19 int chan_nr; 33 int chan_nr;
20 u32 data_width; 34 u32 data_width;
21 u32 sample_rate; 35 u32 sample_rate;
22 }; 36 };
23 37
24 struct dw_i2s_dev; <<
25 <<
26 struct i2s_platform_data { 38 struct i2s_platform_data {
27 #define DWC_I2S_PLAY (1 << 0) 39 #define DWC_I2S_PLAY (1 << 0)
28 #define DWC_I2S_RECORD (1 << 1) 40 #define DWC_I2S_RECORD (1 << 1)
29 #define DW_I2S_SLAVE (1 << 2) 41 #define DW_I2S_SLAVE (1 << 2)
30 #define DW_I2S_MASTER (1 << 3) 42 #define DW_I2S_MASTER (1 << 3)
31 unsigned int cap; 43 unsigned int cap;
32 int channel; 44 int channel;
33 u32 snd_fmts; 45 u32 snd_fmts;
34 u32 snd_rates; 46 u32 snd_rates;
35 47
36 #define DW_I2S_QUIRK_COMP_REG_OFFSET 48 #define DW_I2S_QUIRK_COMP_REG_OFFSET (1 << 0)
37 #define DW_I2S_QUIRK_COMP_PARAM1 49 #define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1)
38 #define DW_I2S_QUIRK_16BIT_IDX_OVERRID 50 #define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2)
39 unsigned int quirks; 51 unsigned int quirks;
40 unsigned int i2s_reg_comp1; 52 unsigned int i2s_reg_comp1;
41 unsigned int i2s_reg_comp2; 53 unsigned int i2s_reg_comp2;
42 54
43 void *play_dma_data; 55 void *play_dma_data;
44 void *capture_dma_data; 56 void *capture_dma_data;
45 bool (*filter)(struct dma_chan *chan, 57 bool (*filter)(struct dma_chan *chan, void *slave);
46 int (*i2s_clk_cfg)(struct i2s_clk_conf 58 int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
47 int (*i2s_pd_init)(struct dw_i2s_dev * <<
48 }; 59 };
49 60
50 struct i2s_dma_data { 61 struct i2s_dma_data {
51 void *data; 62 void *data;
52 dma_addr_t addr; 63 dma_addr_t addr;
53 u32 max_burst; 64 u32 max_burst;
54 enum dma_slave_buswidth addr_width; 65 enum dma_slave_buswidth addr_width;
55 bool (*filter)(struct dma_chan *chan, 66 bool (*filter)(struct dma_chan *chan, void *slave);
56 }; 67 };
57 68
58 /* I2S DMA registers */ 69 /* I2S DMA registers */
59 #define I2S_RXDMA 0x01C0 70 #define I2S_RXDMA 0x01C0
60 #define I2S_TXDMA 0x01C8 71 #define I2S_TXDMA 0x01C8
61 72
62 #define TWO_CHANNEL_SUPPORT 2 /* up 73 #define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */
63 #define FOUR_CHANNEL_SUPPORT 4 /* up 74 #define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */
64 #define SIX_CHANNEL_SUPPORT 6 /* up 75 #define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */
65 #define EIGHT_CHANNEL_SUPPORT 8 /* up 76 #define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */
66 77
67 #endif /* __SOUND_DESIGNWARE_I2S_H */ 78 #endif /* __SOUND_DESIGNWARE_I2S_H */
68 79
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