83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
|
|
* bf6xx_sport - Analog Devices BF6XX SPORT driver
|
|
*
|
|
* Copyright (c) 2012 Analog Devices Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef _BF6XX_SPORT_H_
|
|
#define _BF6XX_SPORT_H_
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <asm/bfin_sport3.h>
|
|
|
|
struct sport_device {
|
|
struct platform_device *pdev;
|
|
const unsigned short *pin_req;
|
|
struct sport_register *tx_regs;
|
|
struct sport_register *rx_regs;
|
|
int tx_dma_chan;
|
|
int rx_dma_chan;
|
|
int tx_err_irq;
|
|
int rx_err_irq;
|
|
|
|
void (*tx_callback)(void *data);
|
|
void *tx_data;
|
|
void (*rx_callback)(void *data);
|
|
void *rx_data;
|
|
|
|
struct dmasg *tx_desc;
|
|
struct dmasg *rx_desc;
|
|
unsigned int tx_desc_size;
|
|
unsigned int rx_desc_size;
|
|
unsigned char *tx_buf;
|
|
unsigned char *rx_buf;
|
|
unsigned int tx_fragsize;
|
|
unsigned int rx_fragsize;
|
|
unsigned int tx_frags;
|
|
unsigned int rx_frags;
|
|
unsigned int wdsize;
|
|
};
|
|
|
|
struct sport_params {
|
|
u32 spctl;
|
|
u32 div;
|
|
};
|
|
|
|
struct sport_device *sport_create(struct platform_device *pdev);
|
|
void sport_delete(struct sport_device *sport);
|
|
int sport_set_tx_params(struct sport_device *sport,
|
|
struct sport_params *params);
|
|
int sport_set_rx_params(struct sport_device *sport,
|
|
struct sport_params *params);
|
|
void sport_tx_start(struct sport_device *sport);
|
|
void sport_rx_start(struct sport_device *sport);
|
|
void sport_tx_stop(struct sport_device *sport);
|
|
void sport_rx_stop(struct sport_device *sport);
|
|
void sport_set_tx_callback(struct sport_device *sport,
|
|
void (*tx_callback)(void *), void *tx_data);
|
|
void sport_set_rx_callback(struct sport_device *sport,
|
|
void (*rx_callback)(void *), void *rx_data);
|
|
int sport_config_tx_dma(struct sport_device *sport, void *buf,
|
|
int fragcount, size_t fragsize);
|
|
int sport_config_rx_dma(struct sport_device *sport, void *buf,
|
|
int fragcount, size_t fragsize);
|
|
unsigned long sport_curr_offset_tx(struct sport_device *sport);
|
|
unsigned long sport_curr_offset_rx(struct sport_device *sport);
|
|
|
|
|
|
|
|
#endif
|