Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
bf6xx-sport.h
Go to the documentation of this file.
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 
26 struct 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 
54 struct sport_params {
55  u32 spctl;
56  u32 div;
57 };
58 
59 struct sport_device *sport_create(struct platform_device *pdev);
60 void sport_delete(struct sport_device *sport);
61 int sport_set_tx_params(struct sport_device *sport,
62  struct sport_params *params);
63 int sport_set_rx_params(struct sport_device *sport,
64  struct sport_params *params);
65 void sport_tx_start(struct sport_device *sport);
66 void sport_rx_start(struct sport_device *sport);
67 void sport_tx_stop(struct sport_device *sport);
68 void sport_rx_stop(struct sport_device *sport);
69 void sport_set_tx_callback(struct sport_device *sport,
70  void (*tx_callback)(void *), void *tx_data);
71 void sport_set_rx_callback(struct sport_device *sport,
72  void (*rx_callback)(void *), void *rx_data);
73 int sport_config_tx_dma(struct sport_device *sport, void *buf,
74  int fragcount, size_t fragsize);
75 int sport_config_rx_dma(struct sport_device *sport, void *buf,
76  int fragcount, size_t fragsize);
77 unsigned long sport_curr_offset_tx(struct sport_device *sport);
78 unsigned long sport_curr_offset_rx(struct sport_device *sport);
79 
80 
81 
82 #endif
Generated on Thu Jan 10 2013 15:07:28 for Linux Kernel by   doxygen 1.8.2