/* -*- linux-c -*- *
*
* ALSA driver for the digigram lx6464es interface
*
* Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifndef LX6464ES_H
#define LX6464ES_H
#include <linux/spinlock.h>
#include <asm/atomic.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include "lx_core.h"
#define LXP "LX6464ES: "
enum {
ES_cmd_free = 0, /* no command executing */
ES_cmd_processing = 1, /* execution of a read/write command */
ES_read_pending = 2, /* a asynchron read command is pending */
ES_read_finishing = 3, /* a read command has finished waiting (set by
* Interrupt or CancelIrp) */
};
enum lx_stream_status {
LX_STREAM_STATUS_FREE,
/* LX_STREAM_STATUS_OPEN, */
LX_STREAM_STATUS_SCHEDULE_RUN,
/* LX_STREAM_STATUS_STARTED, */
LX_STREAM_STATUS_RUNNING,
LX_STREAM_STATUS_SCHEDULE_STOP,
/* LX_STREAM_STATUS_STOPPED, */
/* LX_STREAM_STATUS_PAUSED */
};
struct lx_stream {
struct snd_pcm_substream *stream;
snd_pcm_uframes_t frame_pos;
enum lx_stream_status status; /* free, open, running, draining
* pause */
int is_capture:1;
};
struct lx6464es {
struct snd_card *card;
struct pci_dev *pci;
int irq;
spinlock_t lock; /* interrupt spinlock */
struct mutex setup_mutex; /* mutex used in hw_params, open
* and close */
struct tasklet_struct trigger_tasklet; /* trigger tasklet */
struct tasklet_struct tasklet_capture;
struct tasklet_struct tasklet_playback;
/* ports */
unsigned long port_plx; /* io port (size=256) */
void __iomem *port_plx_remapped; /* remapped plx port */
void __iomem *port_dsp_bar; /* memory port (32-bit,
* non-prefetchable,
* size=8K) */
/* messaging */
spinlock_t msg_lock; /* message spinlock */
atomic_t send_message_locked;
struct lx_rmh rmh;
/* configuration */
uint freq_ratio : 2;
uint playback_mute : 1;
uint hardware_running[2];
u32 board_sample_rate; /* sample rate read from
* board */
u32 sample_rate; /* our sample rate */
u16 pcm_granularity; /* board blocksize */
/* dma */
struct snd_dma_buffer capture_dma_buf;
struct snd_dma_buffer playback_dma_buf;
/* pcm */
struct snd_pcm *pcm;
/* streams */
struct lx_stream capture_stream;
struct lx_stream playback_stream;
};
#endif /* LX6464ES_H */
