Commit | Line | Data |
---|---|---|
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> | |
37 | ||
38 | struct sport_register { | |
39 | u16 tcr1; u16 reserved0; | |
40 | u16 tcr2; u16 reserved1; | |
41 | u16 tclkdiv; u16 reserved2; | |
42 | u16 tfsdiv; u16 reserved3; | |
43 | u32 tx; | |
44 | u32 reserved_l0; | |
45 | u32 rx; | |
46 | u32 reserved_l1; | |
47 | u16 rcr1; u16 reserved4; | |
48 | u16 rcr2; u16 reserved5; | |
49 | u16 rclkdiv; u16 reserved6; | |
50 | u16 rfsdiv; u16 reserved7; | |
51 | u16 stat; u16 reserved8; | |
52 | u16 chnl; u16 reserved9; | |
53 | u16 mcmc1; u16 reserved10; | |
54 | u16 mcmc2; u16 reserved11; | |
55 | u32 mtcs0; | |
56 | u32 mtcs1; | |
57 | u32 mtcs2; | |
58 | u32 mtcs3; | |
59 | u32 mrcs0; | |
60 | u32 mrcs1; | |
61 | u32 mrcs2; | |
62 | u32 mrcs3; | |
63 | }; | |
64 | ||
65 | #define DESC_ELEMENT_COUNT 9 | |
66 | ||
67 | struct sport_device { | |
68 | int dma_rx_chan; | |
69 | int dma_tx_chan; | |
70 | int err_irq; | |
71 | struct sport_register *regs; | |
72 | ||
73 | unsigned char *rx_buf; | |
74 | unsigned char *tx_buf; | |
75 | unsigned int rx_fragsize; | |
76 | unsigned int tx_fragsize; | |
77 | unsigned int rx_frags; | |
78 | unsigned int tx_frags; | |
79 | unsigned int wdsize; | |
80 | ||
81 | /* for dummy dma transfer */ | |
82 | void *dummy_buf; | |
83 | unsigned int dummy_count; | |
84 | ||
85 | /* DMA descriptor ring head of current audio stream*/ | |
86 | struct dmasg *dma_rx_desc; | |
87 | struct dmasg *dma_tx_desc; | |
88 | unsigned int rx_desc_bytes; | |
89 | unsigned int tx_desc_bytes; | |
90 | ||
91 | unsigned int rx_run:1; /* rx is running */ | |
92 | unsigned int tx_run:1; /* tx is running */ | |
93 | ||
94 | struct dmasg *dummy_rx_desc; | |
95 | struct dmasg *dummy_tx_desc; | |
96 | ||
97 | struct dmasg *curr_rx_desc; | |
98 | struct dmasg *curr_tx_desc; | |
99 | ||
100 | int rx_curr_frag; | |
101 | int tx_curr_frag; | |
102 | ||
103 | unsigned int rcr1; | |
104 | unsigned int rcr2; | |
105 | int rx_tdm_count; | |
106 | ||
107 | unsigned int tcr1; | |
108 | unsigned int tcr2; | |
109 | int tx_tdm_count; | |
110 | ||
111 | void (*rx_callback)(void *data); | |
112 | void *rx_data; | |
113 | void (*tx_callback)(void *data); | |
114 | void *tx_data; | |
115 | void (*err_callback)(void *data); | |
116 | void *err_data; | |
117 | unsigned char *tx_dma_buf; | |
118 | unsigned char *rx_dma_buf; | |
119 | #ifdef CONFIG_SND_MMAP_SUPPORT | |
120 | dma_addr_t tx_dma_phy; | |
121 | dma_addr_t rx_dma_phy; | |
122 | int tx_pos;/*pcm sample count*/ | |
123 | int rx_pos; | |
124 | unsigned int tx_buffer_size; | |
125 | unsigned int rx_buffer_size; | |
6b58a821 CC |
126 | int tx_delay_pos; |
127 | int once; | |
8c9c1983 CC |
128 | #endif |
129 | void *private_data; | |
130 | }; | |
131 | ||
132 | extern struct sport_device *sport_handle; | |
133 | ||
134 | struct sport_param { | |
135 | int dma_rx_chan; | |
136 | int dma_tx_chan; | |
137 | int err_irq; | |
138 | struct sport_register *regs; | |
139 | }; | |
140 | ||
141 | struct sport_device *sport_init(struct sport_param *param, unsigned wdsize, | |
142 | unsigned dummy_count, void *private_data); | |
143 | ||
144 | void sport_done(struct sport_device *sport); | |
145 | ||
146 | /* first use these ...*/ | |
147 | ||
148 | /* note: multichannel is in units of 8 channels, tdm_count is number of channels | |
149 | * NOT / 8 ! all channels are enabled by default */ | |
150 | int sport_set_multichannel(struct sport_device *sport, int tdm_count, | |
151 | u32 mask, int packed); | |
152 | ||
153 | int sport_config_rx(struct sport_device *sport, | |
154 | unsigned int rcr1, unsigned int rcr2, | |
155 | unsigned int clkdiv, unsigned int fsdiv); | |
156 | ||
157 | int sport_config_tx(struct sport_device *sport, | |
158 | unsigned int tcr1, unsigned int tcr2, | |
159 | unsigned int clkdiv, unsigned int fsdiv); | |
160 | ||
161 | /* ... then these: */ | |
162 | ||
163 | /* buffer size (in bytes) == fragcount * fragsize_bytes */ | |
164 | ||
165 | /* this is not a very general api, it sets the dma to 2d autobuffer mode */ | |
166 | ||
167 | int sport_config_rx_dma(struct sport_device *sport, void *buf, | |
168 | int fragcount, size_t fragsize_bytes); | |
169 | ||
170 | int sport_config_tx_dma(struct sport_device *sport, void *buf, | |
171 | int fragcount, size_t fragsize_bytes); | |
172 | ||
173 | int sport_tx_start(struct sport_device *sport); | |
174 | int sport_tx_stop(struct sport_device *sport); | |
175 | int sport_rx_start(struct sport_device *sport); | |
176 | int sport_rx_stop(struct sport_device *sport); | |
177 | ||
178 | /* for use in interrupt handler */ | |
179 | unsigned long sport_curr_offset_rx(struct sport_device *sport); | |
180 | unsigned long sport_curr_offset_tx(struct sport_device *sport); | |
181 | ||
182 | void sport_incfrag(struct sport_device *sport, int *frag, int tx); | |
183 | void sport_decfrag(struct sport_device *sport, int *frag, int tx); | |
184 | ||
185 | int sport_set_rx_callback(struct sport_device *sport, | |
186 | void (*rx_callback)(void *), void *rx_data); | |
187 | int sport_set_tx_callback(struct sport_device *sport, | |
188 | void (*tx_callback)(void *), void *tx_data); | |
189 | int sport_set_err_callback(struct sport_device *sport, | |
190 | void (*err_callback)(void *), void *err_data); | |
191 | ||
192 | int sport_send_and_recv(struct sport_device *sport, u8 *out_data, \ | |
193 | u8 *in_data, int len); | |
194 | #endif /* BF53X_SPORT_H */ |