1/* -*- linux-c -*- *
2 *
3 * ALSA driver for the digigram lx6464es interface
4 *
5 * Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING.  If not, write to
20 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
22 *
23 */
24
25#ifndef LX6464ES_H
26#define LX6464ES_H
27
28#include <linux/spinlock.h>
29#include <linux/atomic.h>
30
31#include <sound/core.h>
32#include <sound/pcm.h>
33
34#include "lx_core.h"
35
36#define LXP "LX6464ES: "
37
38enum {
39    ES_cmd_free         = 0,    /* no command executing */
40    ES_cmd_processing   = 1,	/* execution of a read/write command */
41    ES_read_pending     = 2,    /* a asynchron read command is pending */
42    ES_read_finishing   = 3,    /* a read command has finished waiting (set by
43				 * Interrupt or CancelIrp) */
44};
45
46enum lx_stream_status {
47	LX_STREAM_STATUS_FREE,
48/* 	LX_STREAM_STATUS_OPEN, */
49	LX_STREAM_STATUS_SCHEDULE_RUN,
50/* 	LX_STREAM_STATUS_STARTED, */
51	LX_STREAM_STATUS_RUNNING,
52	LX_STREAM_STATUS_SCHEDULE_STOP,
53/* 	LX_STREAM_STATUS_STOPPED, */
54/* 	LX_STREAM_STATUS_PAUSED */
55};
56
57
58struct lx_stream {
59	struct snd_pcm_substream  *stream;
60	snd_pcm_uframes_t          frame_pos;
61	enum lx_stream_status      status; /* free, open, running, draining
62					    * pause */
63	unsigned int               is_capture:1;
64};
65
66
67struct lx6464es {
68	struct snd_card        *card;
69	struct pci_dev         *pci;
70	int			irq;
71
72	u8			mac_address[6];
73
74	struct mutex		lock;        /* interrupt lock */
75	struct mutex            setup_mutex; /* mutex used in hw_params, open
76					      * and close */
77
78	/* ports */
79	unsigned long		port_plx;	   /* io port (size=256) */
80	void __iomem           *port_plx_remapped; /* remapped plx port */
81	void __iomem           *port_dsp_bar;      /* memory port (32-bit,
82						    * non-prefetchable,
83						    * size=8K) */
84
85	/* messaging */
86	struct mutex		msg_lock;          /* message lock */
87	struct lx_rmh           rmh;
88	u32			irqsrc;
89
90	/* configuration */
91	uint			freq_ratio : 2;
92	uint                    playback_mute : 1;
93	uint                    hardware_running[2];
94	u32                     board_sample_rate; /* sample rate read from
95						    * board */
96	u16                     pcm_granularity;   /* board blocksize */
97
98	/* dma */
99	struct snd_dma_buffer   capture_dma_buf;
100	struct snd_dma_buffer   playback_dma_buf;
101
102	/* pcm */
103	struct snd_pcm         *pcm;
104
105	/* streams */
106	struct lx_stream        capture_stream;
107	struct lx_stream        playback_stream;
108};
109
110
111#endif /* LX6464ES_H */
112