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