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02bec49045
prototype of a driver for the digigram lx6464es 64 channel ethersound interface. Signed-off-by: Tim Blechmann <tim@klingt.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/* -*- linux-c -*- *
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*
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* ALSA driver for the digigram lx6464es interface
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*
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* Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef LX6464ES_H
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#define LX6464ES_H
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#include <linux/spinlock.h>
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#include <asm/atomic.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include "lx_core.h"
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#define LXP "LX6464ES: "
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enum {
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ES_cmd_free = 0, /* no command executing */
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ES_cmd_processing = 1, /* execution of a read/write command */
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ES_read_pending = 2, /* a asynchron read command is pending */
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ES_read_finishing = 3, /* a read command has finished waiting (set by
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* Interrupt or CancelIrp) */
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};
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enum lx_stream_status {
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LX_STREAM_STATUS_FREE,
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/* LX_STREAM_STATUS_OPEN, */
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LX_STREAM_STATUS_SCHEDULE_RUN,
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/* LX_STREAM_STATUS_STARTED, */
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LX_STREAM_STATUS_RUNNING,
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LX_STREAM_STATUS_SCHEDULE_STOP,
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/* LX_STREAM_STATUS_STOPPED, */
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/* LX_STREAM_STATUS_PAUSED */
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};
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struct lx_stream {
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struct snd_pcm_substream *stream;
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snd_pcm_uframes_t frame_pos;
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enum lx_stream_status status; /* free, open, running, draining
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* pause */
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int is_capture:1;
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};
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struct lx6464es {
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struct snd_card *card;
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struct pci_dev *pci;
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int irq;
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spinlock_t lock; /* interrupt spinlock */
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struct mutex setup_mutex; /* mutex used in hw_params, open
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* and close */
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struct tasklet_struct trigger_tasklet; /* trigger tasklet */
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struct tasklet_struct tasklet_capture;
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struct tasklet_struct tasklet_playback;
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/* ports */
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unsigned long port_plx; /* io port (size=256) */
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void __iomem *port_plx_remapped; /* remapped plx port */
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void __iomem *port_dsp_bar; /* memory port (32-bit,
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* non-prefetchable,
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* size=8K) */
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/* messaging */
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spinlock_t msg_lock; /* message spinlock */
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atomic_t send_message_locked;
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struct lx_rmh rmh;
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/* configuration */
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uint freq_ratio : 2;
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uint playback_mute : 1;
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uint hardware_running[2];
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u32 board_sample_rate; /* sample rate read from
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* board */
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u32 sample_rate; /* our sample rate */
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u16 pcm_granularity; /* board blocksize */
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/* dma */
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struct snd_dma_buffer capture_dma_buf;
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struct snd_dma_buffer playback_dma_buf;
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/* pcm */
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struct snd_pcm *pcm;
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/* streams */
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struct lx_stream capture_stream;
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struct lx_stream playback_stream;
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};
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#endif /* LX6464ES_H */
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