| /* | |
| * Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com) | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License as published by | |
| * the Free Software Foundation; either version 2 of the License, or | |
| * (at your option) any later version. | |
| * | |
| * This program is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| * GNU General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU General Public License | |
| * along with this program; if not, write to the Free Software | |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| * | |
| */ | |
| #ifndef __SOUND_DESIGNWARE_I2S_H | |
| #define __SOUND_DESIGNWARE_I2S_H | |
| #include <linux/dmaengine.h> | |
| #include <linux/types.h> | |
| /* | |
| * struct i2s_clk_config_data - represent i2s clk configuration data | |
| * @chan_nr: number of channel | |
| * @data_width: number of bits per sample (8/16/24/32 bit) | |
| * @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz) | |
| */ | |
| struct i2s_clk_config_data { | |
| int chan_nr; | |
| u32 data_width; | |
| u32 sample_rate; | |
| }; | |
| struct i2s_platform_data { | |
| #define DWC_I2S_PLAY (1 << 0) | |
| #define DWC_I2S_RECORD (1 << 1) | |
| #define DW_I2S_SLAVE (1 << 2) | |
| #define DW_I2S_MASTER (1 << 3) | |
| unsigned int cap; | |
| int channel; | |
| u32 snd_fmts; | |
| u32 snd_rates; | |
| #define DW_I2S_QUIRK_COMP_REG_OFFSET (1 << 0) | |
| #define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1) | |
| #define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2) | |
| unsigned int quirks; | |
| unsigned int i2s_reg_comp1; | |
| unsigned int i2s_reg_comp2; | |
| void *play_dma_data; | |
| void *capture_dma_data; | |
| bool (*filter)(struct dma_chan *chan, void *slave); | |
| int (*i2s_clk_cfg)(struct i2s_clk_config_data *config); | |
| }; | |
| struct i2s_dma_data { | |
| void *data; | |
| dma_addr_t addr; | |
| u32 max_burst; | |
| enum dma_slave_buswidth addr_width; | |
| bool (*filter)(struct dma_chan *chan, void *slave); | |
| }; | |
| /* I2S DMA registers */ | |
| #define I2S_RXDMA 0x01C0 | |
| #define I2S_TXDMA 0x01C8 | |
| #define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */ | |
| #define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */ | |
| #define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */ | |
| #define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */ | |
| #endif /* __SOUND_DESIGNWARE_I2S_H */ |