[net-next-2.6.git] / sound / pci / mixart / mixart.c

/*
 * Driver for Digigram miXart soundcards
 *
 * main file with alsa callbacks
 *
 * Copyright (c) 2003 by Digigram <alsa@digigram.com>
 *
 *   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; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */


#include <sound/driver.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>

#include <sound/core.h>
#include <sound/initval.h>
#include <sound/info.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "mixart.h"
#include "mixart_hwdep.h"
#include "mixart_core.h"
#include "mixart_mixer.h"

#define CARD_NAME "miXart"

MODULE_AUTHOR("Digigram <alsa@digigram.com>");
MODULE_DESCRIPTION("Digigram " CARD_NAME);
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;             /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;              /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");

/*
 */

static struct pci_device_id snd_mixart_ids[] = {
	{ 0x1057, 0x0003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* MC8240 */
	{ 0, }
};

MODULE_DEVICE_TABLE(pci, snd_mixart_ids);


static int mixart_set_pipe_state(struct mixart_mgr *mgr,
				 struct mixart_pipe *pipe, int start)
{
	struct mixart_group_state_req group_state;
	struct mixart_group_state_resp group_state_resp;
	struct mixart_msg request;
	int err;
	u32 system_msg_uid;

	switch(pipe->status) {
	case PIPE_RUNNING:
	case PIPE_CLOCK_SET:
		if(start) return 0; /* already started */
		break;
	case PIPE_STOPPED:
		if(!start) return 0; /* already stopped */
		break;
	default:
		snd_printk(KERN_ERR "error mixart_set_pipe_state called with wrong pipe->status!\n");
		return -EINVAL;      /* function called with wrong pipe status */
	}

	system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */

	/* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */

	request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
	request.uid = (struct mixart_uid){0,0};
	request.data = &system_msg_uid;
	request.size = sizeof(system_msg_uid);

	err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
	if(err) {
		snd_printk(KERN_ERR "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
		return err;
	}

	/* start or stop the pipe (1 pipe) */

	memset(&group_state, 0, sizeof(group_state));
	group_state.pipe_count = 1;
	group_state.pipe_uid[0] = pipe->group_uid;

	if(start)
		request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
	else
		request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;

	request.uid = pipe->group_uid; /*(struct mixart_uid){0,0};*/
	request.data = &group_state;
	request.size = sizeof(group_state);

	err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
	if (err < 0 || group_state_resp.txx_status != 0) {
		snd_printk(KERN_ERR "error MSG_STREAM_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n", err, group_state_resp.txx_status);
		return -EINVAL;
	}

	if(start) {
		u32 stat;

		group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */

		err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
		if (err < 0 || group_state_resp.txx_status != 0) {
			snd_printk(KERN_ERR "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n", err, group_state_resp.txx_status);
 			return -EINVAL;
		}

		/* in case of start send a synchro top */

		request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
		request.uid = (struct mixart_uid){0,0};
		request.data = NULL;
		request.size = 0;

		err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
		if (err < 0 || stat != 0) {
			snd_printk(KERN_ERR "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n", err, stat);
			return -EINVAL;
		}

		pipe->status = PIPE_RUNNING;
	}
	else /* !start */
		pipe->status = PIPE_STOPPED;

	return 0;
}


static int mixart_set_clock(struct mixart_mgr *mgr,
			    struct mixart_pipe *pipe, unsigned int rate)
{
	struct mixart_msg request;
	struct mixart_clock_properties clock_properties;
	struct mixart_clock_properties_resp clock_prop_resp;
	int err;

	switch(pipe->status) {
	case PIPE_CLOCK_SET:
		break;
	case PIPE_RUNNING:
		if(rate != 0)
			break;
	default:
		if(rate == 0)
			return 0; /* nothing to do */
		else {
			snd_printk(KERN_ERR "error mixart_set_clock(%d) called with wrong pipe->status !\n", rate);
			return -EINVAL;
		}
	}

	memset(&clock_properties, 0, sizeof(clock_properties));
	clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
	clock_properties.clock_mode = CM_STANDALONE;
	clock_properties.frequency = rate;
	clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
	clock_properties.uid_caller[0] = pipe->group_uid;

	snd_printdd("mixart_set_clock to %d kHz\n", rate);

	request.message_id = MSG_CLOCK_SET_PROPERTIES;
	request.uid = mgr->uid_console_manager;
	request.data = &clock_properties;
	request.size = sizeof(clock_properties);

	err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
	if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
		snd_printk(KERN_ERR "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n", err, clock_prop_resp.status, clock_prop_resp.clock_mode);
		return -EINVAL;
	}

	if(rate)  pipe->status = PIPE_CLOCK_SET;
	else      pipe->status = PIPE_RUNNING;

	return 0;
}


/*
 *  Allocate or reference output pipe for analog IOs (pcmp0/1)
 */
struct mixart_pipe *
snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
			int monitoring)
{
	int stream_count;
	struct mixart_pipe *pipe;
	struct mixart_msg request;

	if(capture) {
		if (pcm_number == MIXART_PCM_ANALOG) {
			pipe = &(chip->pipe_in_ana);  /* analog inputs */
		} else {
			pipe = &(chip->pipe_in_dig); /* digital inputs */
		}
		request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
		stream_count = MIXART_CAPTURE_STREAMS;
	} else {
		if (pcm_number == MIXART_PCM_ANALOG) {
			pipe = &(chip->pipe_out_ana);  /* analog outputs */
		} else {
			pipe = &(chip->pipe_out_dig);  /* digital outputs */
		}
		request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
		stream_count = MIXART_PLAYBACK_STREAMS;
	}

	/* a new stream is opened and there are already all streams in use */
	if( (monitoring == 0) && (pipe->references >= stream_count) ) {
		return NULL;
	}

	/* pipe is not yet defined */
	if( pipe->status == PIPE_UNDEFINED ) {
		int err, i;
		struct {
			struct mixart_streaming_group_req sgroup_req;
			struct mixart_streaming_group sgroup_resp;
		} *buf;

		snd_printdd("add_ref_pipe audio chip(%d) pcm(%d)\n", chip->chip_idx, pcm_number);

		buf = kmalloc(sizeof(*buf), GFP_KERNEL);
		if (!buf)
			return NULL;

		request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
		request.data = &buf->sgroup_req;
		request.size = sizeof(buf->sgroup_req);

		memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));

		buf->sgroup_req.stream_count = stream_count;
		buf->sgroup_req.channel_count = 2;
		buf->sgroup_req.latency = 256;
		buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */

		for (i=0; i<stream_count; i++) {
			int j;
			struct mixart_flowinfo *flowinfo;
			struct mixart_bufferinfo *bufferinfo;
			
			/* we don't yet know the format, so config 16 bit pcm audio for instance */
			buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
			buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
			buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */

			/* find the right bufferinfo_array */
			j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
			if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */

			buf->sgroup_req.flow_entry[i] = j;

			flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
			flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
			flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */

			bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
			bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
			bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */

			/* construct the identifier of the stream buffer received in the interrupts ! */
			bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
			if(capture) {
				bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
			}
		}

		err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
		if((err < 0) || (buf->sgroup_resp.status != 0)) {
			snd_printk(KERN_ERR "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n", err, buf->sgroup_resp.status);
			kfree(buf);
			return NULL;
		}

		pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
		pipe->stream_count = buf->sgroup_resp.stream_count;
		/* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */

		pipe->status = PIPE_STOPPED;
		kfree(buf);
	}

	if(monitoring)	pipe->monitoring = 1;
	else		pipe->references++;

	return pipe;
}


int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
			     struct mixart_pipe *pipe, int monitoring)
{
	int err = 0;

	if(pipe->status == PIPE_UNDEFINED)
		return 0;

	if(monitoring)
		pipe->monitoring = 0;
	else
		pipe->references--;

	if((pipe->references <= 0) && (pipe->monitoring == 0)) {

		struct mixart_msg request;
		struct mixart_delete_group_resp delete_resp;

		/* release the clock */
		err = mixart_set_clock( mgr, pipe, 0);
		if( err < 0 ) {
			snd_printk(KERN_ERR "mixart_set_clock(0) return error!\n");
		}

		/* stop the pipe */
		err = mixart_set_pipe_state(mgr, pipe, 0);
		if( err < 0 ) {
			snd_printk(KERN_ERR "error stopping pipe!\n");
		}

		request.message_id = MSG_STREAM_DELETE_GROUP;
		request.uid = (struct mixart_uid){0,0};
		request.data = &pipe->group_uid;            /* the streaming group ! */
		request.size = sizeof(pipe->group_uid);

		/* delete the pipe */
		err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
		if ((err < 0) || (delete_resp.status != 0)) {
			snd_printk(KERN_ERR "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n", err, delete_resp.status);
		}

		pipe->group_uid = (struct mixart_uid){0,0};
		pipe->stream_count = 0;
		pipe->status = PIPE_UNDEFINED;
	}

	return err;
}

static int mixart_set_stream_state(struct mixart_stream *stream, int start)
{
	struct snd_mixart *chip;
	struct mixart_stream_state_req stream_state_req;
	struct mixart_msg request;

	if(!stream->substream)
		return -EINVAL;

	memset(&stream_state_req, 0, sizeof(stream_state_req));
	stream_state_req.stream_count = 1;
	stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
	stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;

	if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
	else
		request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;

	request.uid = (struct mixart_uid){0,0};
	request.data = &stream_state_req;
	request.size = sizeof(stream_state_req);

	stream->abs_period_elapsed = 0;            /* reset stream pos      */
	stream->buf_periods = 0;
	stream->buf_period_frag = 0;

	chip = snd_pcm_substream_chip(stream->substream);

	return snd_mixart_send_msg_nonblock(chip->mgr, &request);
}

/*
 *  Trigger callback
 */

static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
{
	struct mixart_stream *stream = subs->runtime->private_data;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:

		snd_printdd("SNDRV_PCM_TRIGGER_START\n");

		/* START_STREAM */
		if( mixart_set_stream_state(stream, 1) )
			return -EINVAL;

		stream->status = MIXART_STREAM_STATUS_RUNNING;

		break;
	case SNDRV_PCM_TRIGGER_STOP:

		/* STOP_STREAM */
		if( mixart_set_stream_state(stream, 0) )
			return -EINVAL;

		stream->status = MIXART_STREAM_STATUS_OPEN;

		snd_printdd("SNDRV_PCM_TRIGGER_STOP\n");

		break;

	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		/* TODO */
		stream->status = MIXART_STREAM_STATUS_PAUSE;
		snd_printdd("SNDRV_PCM_PAUSE_PUSH\n");
		break;
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		/* TODO */
		stream->status = MIXART_STREAM_STATUS_RUNNING;
		snd_printdd("SNDRV_PCM_PAUSE_RELEASE\n");
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
{
	unsigned long timeout = jiffies + HZ;
	while (atomic_read(&mgr->msg_processed) > 0) {
		if (time_after(jiffies, timeout)) {
			snd_printk(KERN_ERR "mixart: cannot process nonblock events!\n");
			return -EBUSY;
		}
		schedule_timeout_uninterruptible(1);
	}
	return 0;
}

/*
 *  prepare callback for all pcms
 */
static int snd_mixart_prepare(struct snd_pcm_substream *subs)
{
	struct snd_mixart *chip = snd_pcm_substream_chip(subs);
	struct mixart_stream *stream = subs->runtime->private_data;
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Driver for Digigram miXart soundcards
	3	*
	4	* main file with alsa callbacks
	5	*
	6	* Copyright (c) 2003 by Digigram <alsa@digigram.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22
	23
	24	#include <sound/driver.h>
	25	#include <linux/init.h>
	26	#include <linux/interrupt.h>
	27	#include <linux/pci.h>
9d2f928d	28	#include <linux/dma-mapping.h>
1da177e4	29	#include <linux/moduleparam.h>
62932df8	30	#include <linux/mutex.h>
910638ae	31
1da177e4 LT	32	#include <sound/core.h>
	33	#include <sound/initval.h>
	34	#include <sound/info.h>
	35	#include <sound/control.h>
	36	#include <sound/pcm.h>
	37	#include <sound/pcm_params.h>
	38	#include "mixart.h"
	39	#include "mixart_hwdep.h"
	40	#include "mixart_core.h"
	41	#include "mixart_mixer.h"
	42
	43	#define CARD_NAME "miXart"
	44
	45	MODULE_AUTHOR("Digigram <alsa@digigram.com>");
	46	MODULE_DESCRIPTION("Digigram " CARD_NAME);
	47	MODULE_LICENSE("GPL");
	48	MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");
	49
	50	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
	51	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
	52	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
	53
	54	module_param_array(index, int, NULL, 0444);
	55	MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
	56	module_param_array(id, charp, NULL, 0444);
	57	MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
	58	module_param_array(enable, bool, NULL, 0444);
	59	MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");
	60
	61	/*
	62	*/
	63
f40b6890	64	static struct pci_device_id snd_mixart_ids[] = {
1da177e4 LT	65	{ 0x1057, 0x0003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* MC8240 */
	66	{ 0, }
	67	};
	68
	69	MODULE_DEVICE_TABLE(pci, snd_mixart_ids);
	70
	71
67b48b88 TI	72	static int mixart_set_pipe_state(struct mixart_mgr *mgr,
67b48b88 TI	73	struct mixart_pipe *pipe, int start)
1da177e4	74	{
67b48b88 TI	75	struct mixart_group_state_req group_state;
	76	struct mixart_group_state_resp group_state_resp;
	77	struct mixart_msg request;
1da177e4 LT	78	int err;
	79	u32 system_msg_uid;
	80
	81	switch(pipe->status) {
	82	case PIPE_RUNNING:
	83	case PIPE_CLOCK_SET:
	84	if(start) return 0; /* already started */
	85	break;
	86	case PIPE_STOPPED:
	87	if(!start) return 0; /* already stopped */
	88	break;
	89	default:
	90	snd_printk(KERN_ERR "error mixart_set_pipe_state called with wrong pipe->status!\n");
	91	return -EINVAL; /* function called with wrong pipe status */
	92	}
	93
	94	system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */
	95
	96	/* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */
	97
	98	request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
67b48b88	99	request.uid = (struct mixart_uid){0,0};
1da177e4 LT	100	request.data = &system_msg_uid;
	101	request.size = sizeof(system_msg_uid);
	102
	103	err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
	104	if(err) {
	105	snd_printk(KERN_ERR "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
	106	return err;
	107	}
	108
	109	/* start or stop the pipe (1 pipe) */
	110
	111	memset(&group_state, 0, sizeof(group_state));
	112	group_state.pipe_count = 1;
	113	group_state.pipe_uid[0] = pipe->group_uid;
	114
	115	if(start)
	116	request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
	117	else
	118	request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;
	119
67b48b88	120	request.uid = pipe->group_uid; /(struct mixart_uid){0,0};/
1da177e4 LT	121	request.data = &group_state;
	122	request.size = sizeof(group_state);
	123
	124	err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
	125	if (err < 0 \|\| group_state_resp.txx_status != 0) {
	126	snd_printk(KERN_ERR "error MSG_STREAM_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n", err, group_state_resp.txx_status);
	127	return -EINVAL;
	128	}
	129
	130	if(start) {
	131	u32 stat;
	132
	133	group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
	134
	135	err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
	136	if (err < 0 \|\| group_state_resp.txx_status != 0) {
	137	snd_printk(KERN_ERR "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n", err, group_state_resp.txx_status);
	138	return -EINVAL;
	139	}
	140
	141	/* in case of start send a synchro top */
	142
	143	request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
67b48b88	144	request.uid = (struct mixart_uid){0,0};
1da177e4 LT	145	request.data = NULL;
	146	request.size = 0;
	147
	148	err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
	149	if (err < 0 \|\| stat != 0) {
	150	snd_printk(KERN_ERR "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n", err, stat);
	151	return -EINVAL;
	152	}
	153
	154	pipe->status = PIPE_RUNNING;
	155	}
	156	else /* !start */
	157	pipe->status = PIPE_STOPPED;
	158
	159	return 0;
	160	}
	161
	162
67b48b88 TI	163	static int mixart_set_clock(struct mixart_mgr *mgr,
67b48b88 TI	164	struct mixart_pipe *pipe, unsigned int rate)
1da177e4	165	{
67b48b88 TI	166	struct mixart_msg request;
	167	struct mixart_clock_properties clock_properties;
	168	struct mixart_clock_properties_resp clock_prop_resp;
1da177e4 LT	169	int err;
	170
	171	switch(pipe->status) {
	172	case PIPE_CLOCK_SET:
	173	break;
	174	case PIPE_RUNNING:
	175	if(rate != 0)
	176	break;
	177	default:
	178	if(rate == 0)
	179	return 0; /* nothing to do */
	180	else {
	181	snd_printk(KERN_ERR "error mixart_set_clock(%d) called with wrong pipe->status !\n", rate);
	182	return -EINVAL;
	183	}
	184	}
	185
	186	memset(&clock_properties, 0, sizeof(clock_properties));
	187	clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
	188	clock_properties.clock_mode = CM_STANDALONE;
	189	clock_properties.frequency = rate;
	190	clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
	191	clock_properties.uid_caller[0] = pipe->group_uid;
	192
	193	snd_printdd("mixart_set_clock to %d kHz\n", rate);
	194
	195	request.message_id = MSG_CLOCK_SET_PROPERTIES;
	196	request.uid = mgr->uid_console_manager;
	197	request.data = &clock_properties;
	198	request.size = sizeof(clock_properties);
	199
	200	err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
	201	if (err < 0 \|\| clock_prop_resp.status != 0 \|\| clock_prop_resp.clock_mode != CM_STANDALONE) {
	202	snd_printk(KERN_ERR "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n", err, clock_prop_resp.status, clock_prop_resp.clock_mode);
	203	return -EINVAL;
	204	}
	205
	206	if(rate) pipe->status = PIPE_CLOCK_SET;
	207	else pipe->status = PIPE_RUNNING;
	208
	209	return 0;
	210	}
	211
	212
	213	/*
	214	* Allocate or reference output pipe for analog IOs (pcmp0/1)
	215	*/
67b48b88 TI	216	struct mixart_pipe *
	217	snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
	218	int monitoring)
1da177e4 LT	219	{
1da177e4 LT	220	int stream_count;
67b48b88 TI	221	struct mixart_pipe *pipe;
67b48b88 TI	222	struct mixart_msg request;
1da177e4 LT	223
	224	if(capture) {
	225	if (pcm_number == MIXART_PCM_ANALOG) {
	226	pipe = &(chip->pipe_in_ana); /* analog inputs */
	227	} else {
	228	pipe = &(chip->pipe_in_dig); /* digital inputs */
	229	}
	230	request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
	231	stream_count = MIXART_CAPTURE_STREAMS;
	232	} else {
	233	if (pcm_number == MIXART_PCM_ANALOG) {
	234	pipe = &(chip->pipe_out_ana); /* analog outputs */
	235	} else {
	236	pipe = &(chip->pipe_out_dig); /* digital outputs */
	237	}
	238	request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
	239	stream_count = MIXART_PLAYBACK_STREAMS;
	240	}
	241
	242	/* a new stream is opened and there are already all streams in use */
	243	if( (monitoring == 0) && (pipe->references >= stream_count) ) {
	244	return NULL;
	245	}
	246
	247	/* pipe is not yet defined */
	248	if( pipe->status == PIPE_UNDEFINED ) {
	249	int err, i;
	250	struct {
67b48b88 TI	251	struct mixart_streaming_group_req sgroup_req;
67b48b88 TI	252	struct mixart_streaming_group sgroup_resp;
1da177e4 LT	253	} *buf;
	254
	255	snd_printdd("add_ref_pipe audio chip(%d) pcm(%d)\n", chip->chip_idx, pcm_number);
	256
	257	buf = kmalloc(sizeof(*buf), GFP_KERNEL);
	258	if (!buf)
	259	return NULL;
	260
67b48b88	261	request.uid = (struct mixart_uid){0,0}; /* should be StreamManagerUID, but zero is OK if there is only one ! */
1da177e4 LT	262	request.data = &buf->sgroup_req;
	263	request.size = sizeof(buf->sgroup_req);
	264
	265	memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
	266
	267	buf->sgroup_req.stream_count = stream_count;
	268	buf->sgroup_req.channel_count = 2;
	269	buf->sgroup_req.latency = 256;
	270	buf->sgroup_req.connector = pipe->uid_left_connector; /* the left connector */
	271
	272	for (i=0; i<stream_count; i++) {
	273	int j;
	274	struct mixart_flowinfo *flowinfo;
	275	struct mixart_bufferinfo *bufferinfo;
	276
	277	/* we don't yet know the format, so config 16 bit pcm audio for instance */
	278	buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
	279	buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
	280	buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
	281
	282	/* find the right bufferinfo_array */
	283	j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
	284	if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
	285
	286	buf->sgroup_req.flow_entry[i] = j;
	287
	288	flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
67b48b88	289	flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
1da177e4 LT	290	flowinfo[j].bufferinfo_count = 1; /* 1 will set the miXart to ring-buffer mode ! */
	291
	292	bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
	293	bufferinfo[j].buffer_address = 0; /* buffer is not yet allocated */
	294	bufferinfo[j].available_length = 0; /* buffer is not yet allocated */
	295
	296	/* construct the identifier of the stream buffer received in the interrupts ! */
	297	bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
	298	if(capture) {
	299	bufferinfo[j].buffer_id \|= MIXART_NOTIFY_CAPT_MASK;
	300	}
	301	}
	302
	303	err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
	304	if((err < 0) \|\| (buf->sgroup_resp.status != 0)) {
	305	snd_printk(KERN_ERR "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n", err, buf->sgroup_resp.status);
	306	kfree(buf);
	307	return NULL;
	308	}
	309
	310	pipe->group_uid = buf->sgroup_resp.group; /* id of the pipe, as returned by embedded */
	311	pipe->stream_count = buf->sgroup_resp.stream_count;
	312	/* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
	313
	314	pipe->status = PIPE_STOPPED;
	315	kfree(buf);
	316	}
	317
	318	if(monitoring) pipe->monitoring = 1;
	319	else pipe->references++;
	320
	321	return pipe;
	322	}
	323
	324
67b48b88 TI	325	int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
67b48b88 TI	326	struct mixart_pipe *pipe, int monitoring)
1da177e4 LT	327	{
	328	int err = 0;
	329
	330	if(pipe->status == PIPE_UNDEFINED)
	331	return 0;
	332
	333	if(monitoring)
	334	pipe->monitoring = 0;
	335	else
	336	pipe->references--;
	337
	338	if((pipe->references <= 0) && (pipe->monitoring == 0)) {
	339
67b48b88 TI	340	struct mixart_msg request;
67b48b88 TI	341	struct mixart_delete_group_resp delete_resp;
1da177e4 LT	342
	343	/* release the clock */
	344	err = mixart_set_clock( mgr, pipe, 0);
	345	if( err < 0 ) {
	346	snd_printk(KERN_ERR "mixart_set_clock(0) return error!\n");
	347	}
	348
	349	/* stop the pipe */
	350	err = mixart_set_pipe_state(mgr, pipe, 0);
	351	if( err < 0 ) {
	352	snd_printk(KERN_ERR "error stopping pipe!\n");
	353	}
	354
	355	request.message_id = MSG_STREAM_DELETE_GROUP;
67b48b88	356	request.uid = (struct mixart_uid){0,0};
1da177e4 LT	357	request.data = &pipe->group_uid; /* the streaming group ! */
	358	request.size = sizeof(pipe->group_uid);
	359
	360	/* delete the pipe */
	361	err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
	362	if ((err < 0) \|\| (delete_resp.status != 0)) {
	363	snd_printk(KERN_ERR "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n", err, delete_resp.status);
	364	}
	365
67b48b88	366	pipe->group_uid = (struct mixart_uid){0,0};
1da177e4 LT	367	pipe->stream_count = 0;
	368	pipe->status = PIPE_UNDEFINED;
	369	}
	370
	371	return err;
	372	}
	373
67b48b88	374	static int mixart_set_stream_state(struct mixart_stream *stream, int start)
1da177e4	375	{
67b48b88 TI	376	struct snd_mixart *chip;
	377	struct mixart_stream_state_req stream_state_req;
	378	struct mixart_msg request;
1da177e4 LT	379
	380	if(!stream->substream)
	381	return -EINVAL;
	382
	383	memset(&stream_state_req, 0, sizeof(stream_state_req));
	384	stream_state_req.stream_count = 1;
	385	stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
	386	stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
	387
	388	if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	389	request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
	390	else
	391	request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
	392
67b48b88	393	request.uid = (struct mixart_uid){0,0};
1da177e4 LT	394	request.data = &stream_state_req;
	395	request.size = sizeof(stream_state_req);
	396
	397	stream->abs_period_elapsed = 0; /* reset stream pos */
	398	stream->buf_periods = 0;
	399	stream->buf_period_frag = 0;
	400
	401	chip = snd_pcm_substream_chip(stream->substream);
	402
	403	return snd_mixart_send_msg_nonblock(chip->mgr, &request);
	404	}
	405
	406	/*
	407	* Trigger callback
	408	*/
	409
67b48b88	410	static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
1da177e4	411	{
67b48b88	412	struct mixart_stream *stream = subs->runtime->private_data;
1da177e4 LT	413
	414	switch (cmd) {
	415	case SNDRV_PCM_TRIGGER_START:
	416
	417	snd_printdd("SNDRV_PCM_TRIGGER_START\n");
	418
	419	/* START_STREAM */
	420	if( mixart_set_stream_state(stream, 1) )
	421	return -EINVAL;
	422
	423	stream->status = MIXART_STREAM_STATUS_RUNNING;
	424
	425	break;
	426	case SNDRV_PCM_TRIGGER_STOP:
	427
	428	/* STOP_STREAM */
	429	if( mixart_set_stream_state(stream, 0) )
	430	return -EINVAL;
	431
	432	stream->status = MIXART_STREAM_STATUS_OPEN;
	433
	434	snd_printdd("SNDRV_PCM_TRIGGER_STOP\n");
	435
	436	break;
	437
	438	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	439	/* TODO */
	440	stream->status = MIXART_STREAM_STATUS_PAUSE;
	441	snd_printdd("SNDRV_PCM_PAUSE_PUSH\n");
	442	break;
	443	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	444	/* TODO */
	445	stream->status = MIXART_STREAM_STATUS_RUNNING;
	446	snd_printdd("SNDRV_PCM_PAUSE_RELEASE\n");
	447	break;
	448	default:
	449	return -EINVAL;
	450	}
	451	return 0;
	452	}
	453
67b48b88	454	static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
1da177e4	455	{
ef21ca24	456	unsigned long timeout = jiffies + HZ;
1da177e4	457	while (atomic_read(&mgr->msg_processed) > 0) {
ef21ca24	458	if (time_after(jiffies, timeout)) {
1da177e4 LT	459	snd_printk(KERN_ERR "mixart: cannot process nonblock events!\n");
	460	return -EBUSY;
	461	}
8433a509	462	schedule_timeout_uninterruptible(1);
1da177e4 LT	463	}
	464	return 0;
	465	}
	466
	467	/*
	468	* prepare callback for all pcms
	469	*/
67b48b88	470	static int snd_mixart_prepare(struct snd_pcm_substream *subs)
1da177e4	471	{
67b48b88 TI	472	struct snd_mixart *chip = snd_pcm_substream_chip(subs);
67b48b88 TI	473	struct mixart_stream *stream = subs->runtime->private_data;
1da177e4 LT	474
	475