sound/pci/lx6464es/lx6464es.h

   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 */