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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 */ | |
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89 | struct lx_rmh rmh; |
90 | ||
91 | /* configuration */ | |
92 | uint freq_ratio : 2; | |
93 | uint playback_mute : 1; | |
94 | uint hardware_running[2]; | |
95 | u32 board_sample_rate; /* sample rate read from | |
96 | * board */ | |
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97 | u16 pcm_granularity; /* board blocksize */ |
98 | ||
99 | /* dma */ | |
100 | struct snd_dma_buffer capture_dma_buf; | |
101 | struct snd_dma_buffer playback_dma_buf; | |
102 | ||
103 | /* pcm */ | |
104 | struct snd_pcm *pcm; | |
105 | ||
106 | /* streams */ | |
107 | struct lx_stream capture_stream; | |
108 | struct lx_stream playback_stream; | |
109 | }; | |
110 | ||
111 | ||
112 | #endif /* LX6464ES_H */ |