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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 */ |
70 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9