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/*
* <Driver for I2S protocol on SSP (Moorestown and Medfield hardware)>
* Copyright (c) 2010, Intel Corporation.
* Louis LE GALL <louis.le.gall intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MID_I2S_IF_H_
#define MID_I2S_IF_H_
#include <linux/types.h>
#include <linux/intel_mid_i2s_common.h>
#include <linux/intel_mid_dma.h>
#ifdef CONFIG_SND_INTEL_MID_I2S_ENABLE_LLI
#define _LLI_ENABLED_
#endif /* CONFIG_SND_INTEL_MID_I2S_ENABLE_LLI */
enum intel_mid_i2s_ssp_usage {
SSP_USAGE_UNASSIGNED = 0x00,
SSP_USAGE_BLUETOOTH_FM = 0x01,
SSP_USAGE_MODEM = 0x02,
SSP_USAGE_COUNT = 0x03
};
enum intel_mid_i2s_ssp_cmd {
SSP_CMD_UNASSIGNED = 0x00,
SSP_CMD_SET_HW_CONFIG = 0x01,
SSP_CMD_ENABLE_SSP = 0x02,
SSP_CMD_DISABLE_SSP = 0x03,
SSP_CMD_ALLOC_TX = 0x04,
SSP_CMD_FREE_TX = 0x05,
SSP_CMD_ALLOC_RX = 0x06,
SSP_CMD_FREE_RX = 0x07,
SSP_CMD_ABORT = 0x08,
#ifdef _LLI_ENABLED_
SSP_CMD_ENABLE_DMA_RX_INTR = 0x09,
SSP_CMD_ENABLE_DMA_TX_INTR = 0x0A,
SSP_CMD_DISABLE_DMA_RX_INTR = 0x0B,
SSP_CMD_DISABLE_DMA_TX_INTR = 0x0C,
#endif /* _LLI_ENABLED_ */
SSP_CMD_COUNT = 0x0D
};
struct intel_mid_i2s_lli {
u32 *addr;
u32 leng;
};
enum i2s_lli_mode {
I2S_NON_CIRCULAR_MODE,
I2S_CIRCULAR_MODE
};
struct intel_mid_i2s_hdl *intel_mid_i2s_open(
enum intel_mid_i2s_ssp_usage usage);
void intel_mid_i2s_close(struct intel_mid_i2s_hdl *handle);
int intel_mid_i2s_rd_req(struct intel_mid_i2s_hdl *handle, u32 *dst,
size_t len, void *param);
int intel_mid_i2s_wr_req(struct intel_mid_i2s_hdl *handle, u32 *src,
size_t len, void *param);
int intel_mid_i2s_lli_rd_req(struct intel_mid_i2s_hdl *drv_data,
struct intel_mid_i2s_lli *lli_array, int lli_length,
enum i2s_lli_mode lli_mode, void *param);
int intel_mid_i2s_lli_wr_req(struct intel_mid_i2s_hdl *drv_data,
struct intel_mid_i2s_lli *lli_array, int lli_length,
enum i2s_lli_mode lli_mode, void *param);
int intel_mid_i2s_set_wr_cb(struct intel_mid_i2s_hdl *handle,
int (*write_callback)(void *param));
int intel_mid_i2s_set_rd_cb(struct intel_mid_i2s_hdl *handle,
int (*read_callback)(void *param));
int intel_mid_i2s_command(struct intel_mid_i2s_hdl *drv_data,
enum intel_mid_i2s_ssp_cmd cmd,
const struct intel_mid_i2s_settings *hw_ssp_settings);
int intel_mid_i2s_get_tx_fifo_level(struct intel_mid_i2s_hdl *handle);
int intel_mid_i2s_get_rx_fifo_level(struct intel_mid_i2s_hdl *handle);
int intel_mid_i2s_flush(struct intel_mid_i2s_hdl *handle);
void intel_mid_i2s_set_modem_probe_cb(void(*probe_cb)(void));
void intel_mid_i2s_set_modem_remove_cb(void(*remove_cb)(void));
#endif /* MID_I2S_IF_H_ */
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