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 */