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d2aae47f SJ |
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 |