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Cliff Cai8c9c1982008-09-05 18:21:35 +08001/*
Barry Song2c66cb92011-03-28 01:45:10 -04002 * File: bf5xx_sport.h
Cliff Cai8c9c1982008-09-05 18:21:35 +08003 * 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>
Barry Song2c66cb92011-03-28 01:45:10 -040036#include <linux/platform_device.h>
Cliff Cai8c9c1982008-09-05 18:21:35 +080037#include <asm/dma.h>
Barry Songf0d10f52010-03-09 12:58:14 -050038#include <asm/bfin_sport.h>
Cliff Cai8c9c1982008-09-05 18:21:35 +080039
40#define DESC_ELEMENT_COUNT 9
41
42struct sport_device {
Barry Song2c66cb92011-03-28 01:45:10 -040043 int num;
Cliff Cai8c9c1982008-09-05 18:21:35 +080044 int dma_rx_chan;
45 int dma_tx_chan;
46 int err_irq;
Barry Song2c66cb92011-03-28 01:45:10 -040047 const unsigned short *pin_req;
Cliff Cai8c9c1982008-09-05 18:21:35 +080048 struct sport_register *regs;
49
50 unsigned char *rx_buf;
51 unsigned char *tx_buf;
52 unsigned int rx_fragsize;
53 unsigned int tx_fragsize;
54 unsigned int rx_frags;
55 unsigned int tx_frags;
56 unsigned int wdsize;
57
58 /* for dummy dma transfer */
59 void *dummy_buf;
60 unsigned int dummy_count;
61
62 /* DMA descriptor ring head of current audio stream*/
63 struct dmasg *dma_rx_desc;
64 struct dmasg *dma_tx_desc;
65 unsigned int rx_desc_bytes;
66 unsigned int tx_desc_bytes;
67
68 unsigned int rx_run:1; /* rx is running */
69 unsigned int tx_run:1; /* tx is running */
70
71 struct dmasg *dummy_rx_desc;
72 struct dmasg *dummy_tx_desc;
73
74 struct dmasg *curr_rx_desc;
75 struct dmasg *curr_tx_desc;
76
77 int rx_curr_frag;
78 int tx_curr_frag;
79
80 unsigned int rcr1;
81 unsigned int rcr2;
82 int rx_tdm_count;
83
84 unsigned int tcr1;
85 unsigned int tcr2;
86 int tx_tdm_count;
87
88 void (*rx_callback)(void *data);
89 void *rx_data;
90 void (*tx_callback)(void *data);
91 void *tx_data;
92 void (*err_callback)(void *data);
93 void *err_data;
94 unsigned char *tx_dma_buf;
95 unsigned char *rx_dma_buf;
Cliff Cai67f854b2008-11-18 16:18:17 +080096#ifdef CONFIG_SND_BF5XX_MMAP_SUPPORT
Cliff Cai8c9c1982008-09-05 18:21:35 +080097 dma_addr_t tx_dma_phy;
98 dma_addr_t rx_dma_phy;
99 int tx_pos;/*pcm sample count*/
100 int rx_pos;
101 unsigned int tx_buffer_size;
102 unsigned int rx_buffer_size;
Cliff Cai6b58a822008-09-27 22:32:20 +0800103 int tx_delay_pos;
104 int once;
Cliff Cai8c9c1982008-09-05 18:21:35 +0800105#endif
106 void *private_data;
107};
108
Cliff Cai8c9c1982008-09-05 18:21:35 +0800109struct sport_param {
Barry Song2c66cb92011-03-28 01:45:10 -0400110 int num;
Cliff Cai8c9c1982008-09-05 18:21:35 +0800111 int dma_rx_chan;
112 int dma_tx_chan;
113 int err_irq;
Barry Song2c66cb92011-03-28 01:45:10 -0400114 const unsigned short *pin_req;
Cliff Cai8c9c1982008-09-05 18:21:35 +0800115 struct sport_register *regs;
Barry Song2c66cb92011-03-28 01:45:10 -0400116 unsigned int wdsize;
117 unsigned int dummy_count;
118 void *private_data;
Cliff Cai8c9c1982008-09-05 18:21:35 +0800119};
120
Barry Song2c66cb92011-03-28 01:45:10 -0400121struct sport_device *sport_init(struct platform_device *pdev,
122 unsigned int wdsize, unsigned int dummy_count, size_t priv_size);
Cliff Cai8c9c1982008-09-05 18:21:35 +0800123
124void sport_done(struct sport_device *sport);
125
126/* first use these ...*/
127
128/* note: multichannel is in units of 8 channels, tdm_count is number of channels
129 * NOT / 8 ! all channels are enabled by default */
130int sport_set_multichannel(struct sport_device *sport, int tdm_count,
Lars-Peter Clausen63442602013-05-28 19:22:11 +0200131 u32 tx_mask, u32 rx_mask, int packed);
Cliff Cai8c9c1982008-09-05 18:21:35 +0800132
133int sport_config_rx(struct sport_device *sport,
134 unsigned int rcr1, unsigned int rcr2,
135 unsigned int clkdiv, unsigned int fsdiv);
136
137int sport_config_tx(struct sport_device *sport,
138 unsigned int tcr1, unsigned int tcr2,
139 unsigned int clkdiv, unsigned int fsdiv);
140
141/* ... then these: */
142
143/* buffer size (in bytes) == fragcount * fragsize_bytes */
144
145/* this is not a very general api, it sets the dma to 2d autobuffer mode */
146
147int sport_config_rx_dma(struct sport_device *sport, void *buf,
148 int fragcount, size_t fragsize_bytes);
149
150int sport_config_tx_dma(struct sport_device *sport, void *buf,
151 int fragcount, size_t fragsize_bytes);
152
153int sport_tx_start(struct sport_device *sport);
154int sport_tx_stop(struct sport_device *sport);
155int sport_rx_start(struct sport_device *sport);
156int sport_rx_stop(struct sport_device *sport);
157
158/* for use in interrupt handler */
159unsigned long sport_curr_offset_rx(struct sport_device *sport);
160unsigned long sport_curr_offset_tx(struct sport_device *sport);
161
162void sport_incfrag(struct sport_device *sport, int *frag, int tx);
163void sport_decfrag(struct sport_device *sport, int *frag, int tx);
164
165int sport_set_rx_callback(struct sport_device *sport,
166 void (*rx_callback)(void *), void *rx_data);
167int sport_set_tx_callback(struct sport_device *sport,
168 void (*tx_callback)(void *), void *tx_data);
169int sport_set_err_callback(struct sport_device *sport,
170 void (*err_callback)(void *), void *err_data);
171
172int sport_send_and_recv(struct sport_device *sport, u8 *out_data, \
173 u8 *in_data, int len);
174#endif /* BF53X_SPORT_H */