LXR linux/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
  22enum {
  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
  30enum 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
  42struct 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
  51struct 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