83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
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/*
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* bf6xx_sport - Analog Devices BF6XX SPORT driver
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*
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* Copyright (c) 2012 Analog Devices Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _BF6XX_SPORT_H_
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#define _BF6XX_SPORT_H_
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#include <linux/platform_device.h>
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#include <asm/bfin_sport3.h>
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struct sport_device {
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struct platform_device *pdev;
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const unsigned short *pin_req;
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struct sport_register *tx_regs;
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struct sport_register *rx_regs;
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int tx_dma_chan;
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int rx_dma_chan;
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int tx_err_irq;
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int rx_err_irq;
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void (*tx_callback)(void *data);
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void *tx_data;
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void (*rx_callback)(void *data);
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void *rx_data;
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struct dmasg *tx_desc;
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struct dmasg *rx_desc;
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unsigned int tx_desc_size;
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unsigned int rx_desc_size;
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unsigned char *tx_buf;
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unsigned char *rx_buf;
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unsigned int tx_fragsize;
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unsigned int rx_fragsize;
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unsigned int tx_frags;
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unsigned int rx_frags;
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unsigned int wdsize;
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};
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struct sport_params {
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u32 spctl;
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u32 div;
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};
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struct sport_device *sport_create(struct platform_device *pdev);
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void sport_delete(struct sport_device *sport);
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int sport_set_tx_params(struct sport_device *sport,
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struct sport_params *params);
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int sport_set_rx_params(struct sport_device *sport,
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struct sport_params *params);
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void sport_tx_start(struct sport_device *sport);
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void sport_rx_start(struct sport_device *sport);
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void sport_tx_stop(struct sport_device *sport);
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void sport_rx_stop(struct sport_device *sport);
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void sport_set_tx_callback(struct sport_device *sport,
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void (*tx_callback)(void *), void *tx_data);
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void sport_set_rx_callback(struct sport_device *sport,
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void (*rx_callback)(void *), void *rx_data);
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int sport_config_tx_dma(struct sport_device *sport, void *buf,
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int fragcount, size_t fragsize);
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int sport_config_rx_dma(struct sport_device *sport, void *buf,
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int fragcount, size_t fragsize);
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unsigned long sport_curr_offset_tx(struct sport_device *sport);
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unsigned long sport_curr_offset_rx(struct sport_device *sport);
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#endif
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