3a9cf8efd7
This patch add support for synopsys I2S controller as per the ASoC framework. Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/*
|
|
* Copyright (ST) 2012 Rajeev Kumar (rajeev-dlh.kumar@st.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)
|
|
unsigned int cap;
|
|
int channel;
|
|
u32 snd_fmts;
|
|
u32 snd_rates;
|
|
|
|
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 */
|