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8c9c1983 CC |
1 | /* |
2 | * File: bf5xx_ac97_sport.h | |
3 | * Based on: | |
4 | * Author: Roy Huang <roy.huang@analog.com> | |
5 | * | |
6 | * Created: | |
7 | * Description: | |
8 | * | |
9 | * Copyright 2004-2007 Analog Devices Inc. | |
10 | * | |
11 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, see the file COPYING, or write | |
25 | * to the Free Software Foundation, Inc., | |
26 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
27 | */ | |
28 | ||
29 | ||
30 | #ifndef __BF5XX_SPORT_H__ | |
31 | #define __BF5XX_SPORT_H__ | |
32 | ||
33 | #include <linux/types.h> | |
34 | #include <linux/wait.h> | |
35 | #include <linux/workqueue.h> | |
36 | #include <asm/dma.h> | |
f0d10f5a | 37 | #include <asm/bfin_sport.h> |
8c9c1983 CC |
38 | |
39 | #define DESC_ELEMENT_COUNT 9 | |
40 | ||
41 | struct sport_device { | |
42 | int dma_rx_chan; | |
43 | int dma_tx_chan; | |
44 | int err_irq; | |
45 | struct sport_register *regs; | |
46 | ||
47 | unsigned char *rx_buf; | |
48 | unsigned char *tx_buf; | |
49 | unsigned int rx_fragsize; | |
50 | unsigned int tx_fragsize; | |
51 | unsigned int rx_frags; | |
52 | unsigned int tx_frags; | |
53 | unsigned int wdsize; | |
54 | ||
55 | /* for dummy dma transfer */ | |
56 | void *dummy_buf; | |
57 | unsigned int dummy_count; | |
58 | ||
59 | /* DMA descriptor ring head of current audio stream*/ | |
60 | struct dmasg *dma_rx_desc; | |
61 | struct dmasg *dma_tx_desc; | |
62 | unsigned int rx_desc_bytes; | |
63 | unsigned int tx_desc_bytes; | |
64 | ||
65 | unsigned int rx_run:1; /* rx is running */ | |
66 | unsigned int tx_run:1; /* tx is running */ | |
67 | ||
68 | struct dmasg *dummy_rx_desc; | |
69 | struct dmasg *dummy_tx_desc; | |
70 | ||
71 | struct dmasg *curr_rx_desc; | |
72 | struct dmasg *curr_tx_desc; | |
73 | ||
74 | int rx_curr_frag; | |
75 | int tx_curr_frag; | |
76 | ||
77 | unsigned int rcr1; | |
78 | unsigned int rcr2; | |
79 | int rx_tdm_count; | |
80 | ||
81 | unsigned int tcr1; | |
82 | unsigned int tcr2; | |
83 | int tx_tdm_count; | |
84 | ||
85 | void (*rx_callback)(void *data); | |
86 | void *rx_data; | |
87 | void (*tx_callback)(void *data); | |
88 | void *tx_data; | |
89 | void (*err_callback)(void *data); | |
90 | void *err_data; | |
91 | unsigned char *tx_dma_buf; | |
92 | unsigned char *rx_dma_buf; | |
67f854b9 | 93 | #ifdef CONFIG_SND_BF5XX_MMAP_SUPPORT |
8c9c1983 CC |
94 | dma_addr_t tx_dma_phy; |
95 | dma_addr_t rx_dma_phy; | |
96 | int tx_pos;/*pcm sample count*/ | |
97 | int rx_pos; | |
98 | unsigned int tx_buffer_size; | |
99 | unsigned int rx_buffer_size; | |
6b58a821 CC |
100 | int tx_delay_pos; |
101 | int once; | |
8c9c1983 CC |
102 | #endif |
103 | void *private_data; | |
104 | }; | |
105 | ||
106 | extern struct sport_device *sport_handle; | |
107 | ||
108 | struct sport_param { | |
109 | int dma_rx_chan; | |
110 | int dma_tx_chan; | |
111 | int err_irq; | |
112 | struct sport_register *regs; | |
113 | }; | |
114 | ||
115 | struct sport_device *sport_init(struct sport_param *param, unsigned wdsize, | |
116 | unsigned dummy_count, void *private_data); | |
117 | ||
118 | void sport_done(struct sport_device *sport); | |
119 | ||
120 | /* first use these ...*/ | |
121 | ||
122 | /* note: multichannel is in units of 8 channels, tdm_count is number of channels | |
123 | * NOT / 8 ! all channels are enabled by default */ | |
124 | int sport_set_multichannel(struct sport_device *sport, int tdm_count, | |
125 | u32 mask, int packed); | |
126 | ||
127 | int sport_config_rx(struct sport_device *sport, | |
128 | unsigned int rcr1, unsigned int rcr2, | |
129 | unsigned int clkdiv, unsigned int fsdiv); | |
130 | ||
131 | int sport_config_tx(struct sport_device *sport, | |
132 | unsigned int tcr1, unsigned int tcr2, | |
133 | unsigned int clkdiv, unsigned int fsdiv); | |
134 | ||
135 | /* ... then these: */ | |
136 | ||
137 | /* buffer size (in bytes) == fragcount * fragsize_bytes */ | |
138 | ||
139 | /* this is not a very general api, it sets the dma to 2d autobuffer mode */ | |
140 | ||
141 | int sport_config_rx_dma(struct sport_device *sport, void *buf, | |
142 | int fragcount, size_t fragsize_bytes); | |
143 | ||
144 | int sport_config_tx_dma(struct sport_device *sport, void *buf, | |
145 | int fragcount, size_t fragsize_bytes); | |
146 | ||
147 | int sport_tx_start(struct sport_device *sport); | |
148 | int sport_tx_stop(struct sport_device *sport); | |
149 | int sport_rx_start(struct sport_device *sport); | |
150 | int sport_rx_stop(struct sport_device *sport); | |
151 | ||
152 | /* for use in interrupt handler */ | |
153 | unsigned long sport_curr_offset_rx(struct sport_device *sport); | |
154 | unsigned long sport_curr_offset_tx(struct sport_device *sport); | |
155 | ||
156 | void sport_incfrag(struct sport_device *sport, int *frag, int tx); | |
157 | void sport_decfrag(struct sport_device *sport, int *frag, int tx); | |
158 | ||
159 | int sport_set_rx_callback(struct sport_device *sport, | |
160 | void (*rx_callback)(void *), void *rx_data); | |
161 | int sport_set_tx_callback(struct sport_device *sport, | |
162 | void (*tx_callback)(void *), void *tx_data); | |
163 | int sport_set_err_callback(struct sport_device *sport, | |
164 | void (*err_callback)(void *), void *err_data); | |
165 | ||
166 | int sport_send_and_recv(struct sport_device *sport, u8 *out_data, \ | |
167 | u8 *in_data, int len); | |
168 | #endif /* BF53X_SPORT_H */ |