1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* -*- linux-c -*- * |
3 | * |
4 | * ALSA driver for the digigram lx6464es interface |
5 | * |
6 | * Copyright (c) 2009 Tim Blechmann <tim@klingt.org> |
7 | */ |
8 | |
9 | #ifndef LX6464ES_H |
10 | #define LX6464ES_H |
11 | |
12 | #include <linux/spinlock.h> |
13 | #include <linux/atomic.h> |
14 | |
15 | #include <sound/core.h> |
16 | #include <sound/pcm.h> |
17 | |
18 | #include "lx_core.h" |
19 | |
20 | #define LXP "LX6464ES: " |
21 | |
22 | enum { |
23 | ES_cmd_free = 0, /* no command executing */ |
24 | ES_cmd_processing = 1, /* execution of a read/write command */ |
25 | ES_read_pending = 2, /* a asynchron read command is pending */ |
26 | ES_read_finishing = 3, /* a read command has finished waiting (set by |
27 | * Interrupt or CancelIrp) */ |
28 | }; |
29 | |
30 | enum lx_stream_status { |
31 | LX_STREAM_STATUS_FREE, |
32 | /* LX_STREAM_STATUS_OPEN, */ |
33 | LX_STREAM_STATUS_SCHEDULE_RUN, |
34 | /* LX_STREAM_STATUS_STARTED, */ |
35 | LX_STREAM_STATUS_RUNNING, |
36 | LX_STREAM_STATUS_SCHEDULE_STOP, |
37 | /* LX_STREAM_STATUS_STOPPED, */ |
38 | /* LX_STREAM_STATUS_PAUSED */ |
39 | }; |
40 | |
41 | |
42 | struct lx_stream { |
43 | struct snd_pcm_substream *stream; |
44 | snd_pcm_uframes_t frame_pos; |
45 | enum lx_stream_status status; /* free, open, running, draining |
46 | * pause */ |
47 | unsigned int is_capture:1; |
48 | }; |
49 | |
50 | |
51 | struct lx6464es { |
52 | struct snd_card *card; |
53 | struct pci_dev *pci; |
54 | int irq; |
55 | |
56 | u8 mac_address[6]; |
57 | |
58 | struct mutex lock; /* interrupt lock */ |
59 | struct mutex setup_mutex; /* mutex used in hw_params, open |
60 | * and close */ |
61 | |
62 | /* ports */ |
63 | unsigned long port_plx; /* io port (size=256) */ |
64 | void __iomem *port_plx_remapped; /* remapped plx port */ |
65 | void __iomem *port_dsp_bar; /* memory port (32-bit, |
66 | * non-prefetchable, |
67 | * size=8K) */ |
68 | |
69 | /* messaging */ |
70 | struct mutex msg_lock; /* message lock */ |
71 | struct lx_rmh rmh; |
72 | u32 irqsrc; |
73 | |
74 | /* configuration */ |
75 | uint freq_ratio : 2; |
76 | uint playback_mute : 1; |
77 | uint hardware_running[2]; |
78 | u32 board_sample_rate; /* sample rate read from |
79 | * board */ |
80 | u16 pcm_granularity; /* board blocksize */ |
81 | |
82 | /* dma */ |
83 | struct snd_dma_buffer capture_dma_buf; |
84 | struct snd_dma_buffer playback_dma_buf; |
85 | |
86 | /* pcm */ |
87 | struct snd_pcm *pcm; |
88 | |
89 | /* streams */ |
90 | struct lx_stream capture_stream; |
91 | struct lx_stream playback_stream; |
92 | }; |
93 | |
94 | |
95 | #endif /* LX6464ES_H */ |
96 | |