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1/*
2 * bf6xx_sport - Analog Devices BF6XX SPORT driver
3 *
4 * Copyright (c) 2012 Analog Devices Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20#ifndef _BF6XX_SPORT_H_
21#define _BF6XX_SPORT_H_
22
23#include <linux/platform_device.h>
24#include <asm/bfin_sport3.h>
25
26struct sport_device {
27 struct platform_device *pdev;
28 const unsigned short *pin_req;
29 struct sport_register *tx_regs;
30 struct sport_register *rx_regs;
31 int tx_dma_chan;
32 int rx_dma_chan;
33 int tx_err_irq;
34 int rx_err_irq;
35
36 void (*tx_callback)(void *data);
37 void *tx_data;
38 void (*rx_callback)(void *data);
39 void *rx_data;
40
41 struct dmasg *tx_desc;
42 struct dmasg *rx_desc;
43 unsigned int tx_desc_size;
44 unsigned int rx_desc_size;
45 unsigned char *tx_buf;
46 unsigned char *rx_buf;
47 unsigned int tx_fragsize;
48 unsigned int rx_fragsize;
49 unsigned int tx_frags;
50 unsigned int rx_frags;
51 unsigned int wdsize;
52};
53
54struct sport_params {
55 u32 spctl;
56 u32 div;
57};
58
59struct sport_device *sport_create(struct platform_device *pdev);
60void sport_delete(struct sport_device *sport);
61int sport_set_tx_params(struct sport_device *sport,
62 struct sport_params *params);
63int sport_set_rx_params(struct sport_device *sport,
64 struct sport_params *params);
65void sport_tx_start(struct sport_device *sport);
66void sport_rx_start(struct sport_device *sport);
67void sport_tx_stop(struct sport_device *sport);
68void sport_rx_stop(struct sport_device *sport);
69void sport_set_tx_callback(struct sport_device *sport,
70 void (*tx_callback)(void *), void *tx_data);
71void sport_set_rx_callback(struct sport_device *sport,
72 void (*rx_callback)(void *), void *rx_data);
73int sport_config_tx_dma(struct sport_device *sport, void *buf,
74 int fragcount, size_t fragsize);
75int sport_config_rx_dma(struct sport_device *sport, void *buf,
76 int fragcount, size_t fragsize);
77unsigned long sport_curr_offset_tx(struct sport_device *sport);
78unsigned long sport_curr_offset_rx(struct sport_device *sport);
79
80
81
82#endif