| Rajeev Kumar | 3a9cf8e | 2012-06-21 15:54:51 +0530 | [diff] [blame] | 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 */ |