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* 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
* 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);