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 <asm/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
38 enum {
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
46 enum 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
58 struct 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 int is_capture:1;
64 };
65
66
67 struct lx6464es {
68 struct snd_card *card;
69 struct pci_dev *pci;
70 int irq;
71
72 spinlock_t lock; /* interrupt spinlock */
73 struct mutex setup_mutex; /* mutex used in hw_params, open
74 * and close */
75
76 struct tasklet_struct trigger_tasklet; /* trigger tasklet */
77 struct tasklet_struct tasklet_capture;
78 struct tasklet_struct tasklet_playback;
79
80 /* ports */
81 unsigned long port_plx; /* io port (size=256) */
82 void __iomem *port_plx_remapped; /* remapped plx port */
83 void __iomem *port_dsp_bar; /* memory port (32-bit,
84 * non-prefetchable,
85 * size=8K) */
86
87 /* messaging */
88 spinlock_t msg_lock; /* message spinlock */
89 atomic_t send_message_locked;
90 struct lx_rmh rmh;
91
92 /* configuration */
93 uint freq_ratio : 2;
94 uint playback_mute : 1;
95 uint hardware_running[2];
96 u32 board_sample_rate; /* sample rate read from
97 * board */
98 u32 sample_rate; /* our sample rate */
99 u16 pcm_granularity; /* board blocksize */
100
101 /* dma */
102 struct snd_dma_buffer capture_dma_buf;
103 struct snd_dma_buffer playback_dma_buf;
104
105 /* pcm */
106 struct snd_pcm *pcm;
107
108 /* streams */
109 struct lx_stream capture_stream;
110 struct lx_stream playback_stream;
111 };
112
113
114 #endif /* LX6464ES_H */
115
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