| /* |
| * 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) |
| 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 */ |
