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