path: root/sound/pci/lx6464es/lx6464es.c

/* -*- linux-c -*- *
 *
 * ALSA driver for the digigram lx6464es interface
 *
 * Copyright (c) 2008, 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.
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/delay.h>

#include <sound/initval.h>
#include <sound/control.h>
#include <sound/info.h>

#include "lx6464es.h"

MODULE_AUTHOR("Tim Blechmann");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("digigram lx6464es");
MODULE_SUPPORTED_DEVICE("{digigram lx6464es{}}");


static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Digigram LX6464ES interface.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for  Digigram LX6464ES interface.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable/disable specific Digigram LX6464ES soundcards.");

static const char card_name[] = "LX6464ES";


#define PCI_DEVICE_ID_PLX_LX6464ES		PCI_DEVICE_ID_PLX_9056

static struct pci_device_id snd_lx6464es_ids[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES),
	  .subvendor = PCI_VENDOR_ID_DIGIGRAM,
	  .subdevice = PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_SERIAL_SUBSYSTEM
	},			/* LX6464ES */
	{ PCI_DEVICE(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_LX6464ES),
	  .subvendor = PCI_VENDOR_ID_DIGIGRAM,
	  .subdevice = PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_CAE_SERIAL_SUBSYSTEM
	},			/* LX6464ES-CAE */
	{ 0, },
};

MODULE_DEVICE_TABLE(pci, snd_lx6464es_ids);



/* PGO pour USERo dans le registre pci_0x06/loc_0xEC */
#define CHIPSC_RESET_XILINX (1L<<16)


/* alsa callbacks */
static struct snd_pcm_hardware lx_caps = {
	.info             = (SNDRV_PCM_INFO_MMAP |
			     SNDRV_PCM_INFO_INTERLEAVED |
			     SNDRV_PCM_INFO_MMAP_VALID |
			     SNDRV_PCM_INFO_SYNC_START),
	.formats	  = (SNDRV_PCM_FMTBIT_S16_LE |
			     SNDRV_PCM_FMTBIT_S16_BE |
			     SNDRV_PCM_FMTBIT_S24_3LE |
			     SNDRV_PCM_FMTBIT_S24_3BE),
	.rates            = (SNDRV_PCM_RATE_CONTINUOUS |
			     SNDRV_PCM_RATE_8000_192000),
	.rate_min         = 8000,
	.rate_max         = 192000,
	.channels_min     = 2,
	.channels_max     = 64,
	.buffer_bytes_max = 64*2*3*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER,
	.period_bytes_min = (2*2*MICROBLAZE_IBL_MIN*2),
	.period_bytes_max = (4*64*MICROBLAZE_IBL_MAX*MAX_STREAM_BUFFER),
	.periods_min      = 2,
	.periods_max      = MAX_STREAM_BUFFER,
};

static int lx_set_granularity(struct lx6464es *chip, u32 gran);


static int lx_hardware_open(struct lx6464es *chip,
			    struct snd_pcm_substream *substream)
{
	int err = 0;
	struct snd_pcm_runtime *runtime = substream->runtime;
	int channels = runtime->channels;
	int is_capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);

	snd_pcm_uframes_t period_size = runtime->period_size;

	snd_printd(LXP "allocating pipe for %d channels\n", channels);
	err = lx_pipe_allocate(chip, 0, is_capture, channels);
	if (err < 0) {