Commit | Line | Data |
---|---|---|
3a9cf8ef RK |
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 | */ | |
32 | struct i2s_clk_config_data { | |
33 | int chan_nr; | |
34 | u32 data_width; | |
35 | u32 sample_rate; | |
36 | }; | |
37 | ||
38 | struct 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 | ||
52 | struct 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 */ |