[ALSA] Add PCXHR driver

Modules: Documentation,PCI drivers,Digigram PCXHR driver

Add Digigram PCXHR driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

12 files changed, 4517 insertions, 0 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index c30fd30a19e8..d2578013e829 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1103,6 +1103,13 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     This module supports only one card, autoprobe and PnP.
 
+  Module snd-pcxhr
+  ----------------
+
+    Module for Digigram PCXHR boards
+
+    This module supports multiple cards.
+
   Module snd-powermac (on ppc only)
   ---------------------------------
 
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index ef7bdc5a9657..1e2e19305e38 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -455,6 +455,17 @@ config SND_NM256
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-nm256.
 
+config SND_PCXHR
+	tristate "Digigram PCXHR"
+	depends on SND
+	select SND_PCM
+	select SND_HWDEP
+	help
+	  Say Y here to include support for Digigram PCXHR boards.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-pcxhr.
+
 config SND_RME32
 	tristate "RME Digi32, 32/8, 32 PRO"
 	depends on SND
diff --git a/sound/pci/Makefile b/sound/pci/Makefile
index 82a9c734f84d..a6c3cd58fe94 100644
--- a/sound/pci/Makefile
+++ b/sound/pci/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_SND) += \
 	korg1212/ \
 	mixart/ \
 	nm256/ \
+	pcxhr/ \
 	rme9652/ \
 	trident/ \
 	ymfpci/ \
diff --git a/sound/pci/pcxhr/Makefile b/sound/pci/pcxhr/Makefile
new file mode 100644
index 000000000000..10473c05918d
--- /dev/null
+++ b/sound/pci/pcxhr/Makefile
@@ -0,0 +1,2 @@
+snd-pcxhr-objs := pcxhr.o pcxhr_hwdep.o pcxhr_mixer.o pcxhr_core.o
+obj-$(CONFIG_SND_PCXHR) += snd-pcxhr.o
diff --git a/sound/pci/pcxhr/pcxhr.c b/sound/pci/pcxhr/pcxhr.c
new file mode 100644
index 000000000000..b8c0853a8278
--- /dev/null
+++ b/sound/pci/pcxhr/pcxhr.c
@@ -0,0 +1,1367 @@
+/*
+ * Driver for Digigram pcxhr compatible soundcards
+ *
+ * main file with alsa callbacks
+ *
+ * Copyright (c) 2004 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/slab.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/moduleparam.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 "pcxhr.h"
+#include "pcxhr_mixer.h"
+#include "pcxhr_hwdep.h"
+#include "pcxhr_core.h"
+
+#define DRIVER_NAME "pcxhr"
+
+MODULE_AUTHOR("Markus Bollinger <bollinger@digigram.com>");
+MODULE_DESCRIPTION("Digigram " DRIVER_NAME " " PCXHR_DRIVER_VERSION_STRING);
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Digigram," DRIVER_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 */
+static int mono[SNDRV_CARDS];					/* capture in mono only */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for Digigram " DRIVER_NAME " soundcard");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for Digigram " DRIVER_NAME " soundcard");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable Digigram " DRIVER_NAME " soundcard");
+module_param_array(mono, bool, NULL, 0444);
+MODULE_PARM_DESC(mono, "Mono capture mode (default is stereo)");
+
+enum {
+	PCI_ID_VX882HR,
+	PCI_ID_PCX882HR,
+	PCI_ID_VX881HR,
+	PCI_ID_PCX881HR,
+	PCI_ID_PCX1222HR,
+	PCI_ID_PCX1221HR,
+	PCI_ID_LAST
+};
+
+static struct pci_device_id pcxhr_ids[] = {
+	{ 0x10b5, 0x9656, 0x1369, 0xb001, 0, 0, PCI_ID_VX882HR, },   /* VX882HR */
+	{ 0x10b5, 0x9656, 0x1369, 0xb101, 0, 0, PCI_ID_PCX882HR, },  /* PCX882HR */
+	{ 0x10b5, 0x9656, 0x1369, 0xb201, 0, 0, PCI_ID_VX881HR, },   /* VX881HR */
+	{ 0x10b5, 0x9656, 0x1369, 0xb301, 0, 0, PCI_ID_PCX881HR, },  /* PCX881HR */
+	{ 0x10b5, 0x9656, 0x1369, 0xb501, 0, 0, PCI_ID_PCX1222HR, }, /* PCX1222HR */
+	{ 0x10b5, 0x9656, 0x1369, 0xb701, 0, 0, PCI_ID_PCX1221HR, }, /* PCX1221HR */
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, pcxhr_ids);
+
+struct board_parameters {
+	char* board_name;
+	short playback_chips;
+	short capture_chips;
+	short firmware_num;
+};
+static struct board_parameters pcxhr_board_params[] = {
+[PCI_ID_VX882HR] =	{ "VX882HR",   4, 4, 41, },
+[PCI_ID_PCX882HR] =	{ "PCX882HR",  4, 4, 41, },
+[PCI_ID_VX881HR] =	{ "VX881HR",   4, 4, 41, },
+[PCI_ID_PCX881HR] =	{ "PCX881HR",  4, 4, 41, },
+[PCI_ID_PCX1222HR] =	{ "PCX1222HR", 6, 1, 42, },
+[PCI_ID_PCX1221HR] =	{ "PCX1221HR", 6, 1, 42, },
+};
+
+
+static int pcxhr_pll_freq_register(unsigned int freq, unsigned int* pllreg,
+				   unsigned int* realfreq)
+{
+	unsigned int reg;
+
+	if (freq < 6900 || freq > 110250)
+		return -EINVAL;
+	reg = (28224000 * 10) / freq;
+	reg = (reg + 5) / 10;
+	if (reg < 0x200)
+		*pllreg = reg + 0x800;
+	else if (reg < 0x400)
+		*pllreg = reg & 0x1ff;
+	else if (reg < 0x800) {
+		*pllreg = ((reg >> 1) & 0x1ff) + 0x200;
+		reg &= ~1;
+	} else {
+		*pllreg = ((reg >> 2) & 0x1ff) + 0x400;
+		reg &= ~3;
+	}
+	if (realfreq)
+		*realfreq = ((28224000 * 10) / reg + 5) / 10;
+	return 0;
+}
+
+
+#define PCXHR_FREQ_REG_MASK		0x1f
+#define PCXHR_FREQ_QUARTZ_48000		0x00
+#define PCXHR_FREQ_QUARTZ_24000		0x01
+#define PCXHR_FREQ_QUARTZ_12000		0x09
+#define PCXHR_FREQ_QUARTZ_32000		0x08
+#define PCXHR_FREQ_QUARTZ_16000		0x04
+#define PCXHR_FREQ_QUARTZ_8000		0x0c
+#define PCXHR_FREQ_QUARTZ_44100		0x02
+#define PCXHR_FREQ_QUARTZ_22050		0x0a
+#define PCXHR_FREQ_QUARTZ_11025		0x06
+#define PCXHR_FREQ_PLL			0x05
+#define PCXHR_FREQ_QUARTZ_192000	0x10
+#define PCXHR_FREQ_QUARTZ_96000		0x18
+#define PCXHR_FREQ_QUARTZ_176400	0x14
+#define PCXHR_FREQ_QUARTZ_88200		0x1c
+#define PCXHR_FREQ_QUARTZ_128000	0x12
+#define PCXHR_FREQ_QUARTZ_64000		0x1a
+
+#define PCXHR_FREQ_WORD_CLOCK		0x0f
+#define PCXHR_FREQ_SYNC_AES		0x0e
+#define PCXHR_FREQ_AES_1		0x07
+#define PCXHR_FREQ_AES_2		0x0b
+#define PCXHR_FREQ_AES_3		0x03
+#define PCXHR_FREQ_AES_4		0x0d
+
+#define PCXHR_MODIFY_CLOCK_S_BIT	0x04
+
+#define PCXHR_IRQ_TIMER_FREQ		92000
+#define PCXHR_IRQ_TIMER_PERIOD		48
+
+static int pcxhr_get_clock_reg(struct pcxhr_mgr *mgr, unsigned int rate,
+			       unsigned int *reg, unsigned int *freq)
+{
+	unsigned int val, realfreq, pllreg;
+	struct pcxhr_rmh rmh;
+	int err;
+
+	realfreq = rate;
+	switch (mgr->use_clock_type) {
+	case PCXHR_CLOCK_TYPE_INTERNAL :	/* clock by quartz or pll */
+		switch (rate) {
+		case 48000 :	val = PCXHR_FREQ_QUARTZ_48000;	break;
+		case 24000 :	val = PCXHR_FREQ_QUARTZ_24000;	break;
+		case 12000 :	val = PCXHR_FREQ_QUARTZ_12000;	break;
+		case 32000 :	val = PCXHR_FREQ_QUARTZ_32000;	break;
+		case 16000 :	val = PCXHR_FREQ_QUARTZ_16000;	break;
+		case 8000 :	val = PCXHR_FREQ_QUARTZ_8000;	break;
+		case 44100 :	val = PCXHR_FREQ_QUARTZ_44100;	break;
+		case 22050 :	val = PCXHR_FREQ_QUARTZ_22050;	break;
+		case 11025 :	val = PCXHR_FREQ_QUARTZ_11025;	break;
+		case 192000 :	val = PCXHR_FREQ_QUARTZ_192000;	break;
+		case 96000 :	val = PCXHR_FREQ_QUARTZ_96000;	break;
+		case 176400 :	val = PCXHR_FREQ_QUARTZ_176400;	break;
+		case 88200 :	val = PCXHR_FREQ_QUARTZ_88200;	break;
+		case 128000 :	val = PCXHR_FREQ_QUARTZ_128000;	break;
+		case 64000 :	val = PCXHR_FREQ_QUARTZ_64000;	break;
+		default :
+			val = PCXHR_FREQ_PLL;
+			/* get the value for the pll register */
+			err = pcxhr_pll_freq_register(rate, &pllreg, &realfreq);
+			if (err)
+				return err;
+			pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
+			rmh.cmd[0] |= IO_NUM_REG_GENCLK;
+			rmh.cmd[1]  = pllreg & MASK_DSP_WORD;
+			rmh.cmd[2]  = pllreg >> 24;
+			rmh.cmd_len = 3;
+			err = pcxhr_send_msg(mgr, &rmh);
+			if (err < 0) {
+				snd_printk(KERN_ERR
+					   "error CMD_ACCESS_IO_WRITE for PLL register : %x!\n",
+					   err );
+				return err;
+			}
+		}
+		break;
+	case PCXHR_CLOCK_TYPE_WORD_CLOCK :	val = PCXHR_FREQ_WORD_CLOCK;	break;
+	case PCXHR_CLOCK_TYPE_AES_SYNC :	val = PCXHR_FREQ_SYNC_AES;	break;
+	case PCXHR_CLOCK_TYPE_AES_1 :		val = PCXHR_FREQ_AES_1;		break;
+	case PCXHR_CLOCK_TYPE_AES_2 :		val = PCXHR_FREQ_AES_2;		break;
+	case PCXHR_CLOCK_TYPE_AES_3 :		val = PCXHR_FREQ_AES_3;		break;
+	case PCXHR_CLOCK_TYPE_AES_4 :		val = PCXHR_FREQ_AES_4;		break;
+	default : return -EINVAL;
+	}
+	*reg = val;
+	*freq = realfreq;
+	return 0;
+}
+
+
+int pcxhr_set_clock(struct pcxhr_mgr *mgr, unsigned int rate)
+{
+	unsigned int val, realfreq, speed;
+	struct pcxhr_rmh rmh;
+	int err, changed;
+
+	if (rate == 0)
+		return 0; /* nothing to do */
+
+	err = pcxhr_get_clock_reg(mgr, rate, &val, &realfreq);
+	if (err)
+		return err;
+
+	/* codec speed modes */
+	if (rate < 55000)
+		speed = 0;	/* single speed */
+	else if (rate < 100000)
+		speed = 1;	/* dual speed */
+	else
+		speed = 2;	/* quad speed */
+	if (mgr->codec_speed != speed) {
+		pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);	/* mute outputs */
+		rmh.cmd[0] |= IO_NUM_REG_MUTE_OUT;
+		err = pcxhr_send_msg(mgr, &rmh);
+		if (err)
+			return err;
+
+		pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);	/* set speed ratio */
+		rmh.cmd[0] |= IO_NUM_SPEED_RATIO;
+		rmh.cmd[1] = speed;
+		rmh.cmd_len = 2;
+		err = pcxhr_send_msg(mgr, &rmh);
+		if (err)
+			return err;
+	}
+	/* set the new frequency */
+	snd_printdd("clock register : set %x\n", val);
+	err = pcxhr_write_io_num_reg_cont(mgr, PCXHR_FREQ_REG_MASK, val, &changed);
+	if (err)
+		return err;
+	mgr->sample_rate_real = realfreq;
+	mgr->cur_clock_type = mgr->use_clock_type;
+
+	/* unmute after codec speed modes */
+	if (mgr->codec_speed != speed) {
+		pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_READ);	/* unmute outputs */
+		rmh.cmd[0] |= IO_NUM_REG_MUTE_OUT;
+		err = pcxhr_send_msg(mgr, &rmh);
+		if (err)
+			return err;
+		mgr->codec_speed = speed;			/* save new codec speed */
+	}
+
+	if (changed) {
+		pcxhr_init_rmh(&rmh, CMD_MODIFY_CLOCK);
+		rmh.cmd[0] |= PCXHR_MODIFY_CLOCK_S_BIT;		/* resync fifos  */
+		if (rate < PCXHR_IRQ_TIMER_FREQ)
+			rmh.cmd[1] = PCXHR_IRQ_TIMER_PERIOD;
+		else
+			rmh.cmd[1] = PCXHR_IRQ_TIMER_PERIOD * 2;
+		rmh.cmd[2] = rate;
+		rmh.cmd_len = 3;
+		err = pcxhr_send_msg(mgr, &rmh);
+		if (err)
+			return err;
+	}
+	snd_printdd("pcxhr_set_clock to %dHz (realfreq=%d)\n", rate, realfreq);
+	return 0;
+}
+
+
+int pcxhr_get_external_clock(struct pcxhr_mgr *mgr, enum pcxhr_clock_type clock_type,
+			     int *sample_rate)
+{
+	struct pcxhr_rmh rmh;
+	unsigned char reg;
+	int err, rate;
+
+	switch (clock_type) {
+	case PCXHR_CLOCK_TYPE_WORD_CLOCK :	reg = REG_STATUS_WORD_CLOCK;	break;
+	case PCXHR_CLOCK_TYPE_AES_SYNC :	reg = REG_STATUS_AES_SYNC;	break;
+	case PCXHR_CLOCK_TYPE_AES_1 :		reg = REG_STATUS_AES_1;		break;
+	case PCXHR_CLOCK_TYPE_AES_2 :		reg = REG_STATUS_AES_2;		break;
+	case PCXHR_CLOCK_TYPE_AES_3 :		reg = REG_STATUS_AES_3;		break;
+	case PCXHR_CLOCK_TYPE_AES_4 :		reg = REG_STATUS_AES_4;		break;
+	default : return -EINVAL;
+	}
+	pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_READ);
+	rmh.cmd_len = 2;
+	rmh.cmd[0] |= IO_NUM_REG_STATUS;
+	if (mgr->last_reg_stat != reg) {
+		rmh.cmd[1]  = reg;
+		err = pcxhr_send_msg(mgr, &rmh);
+		if (err)
+			return err;
+		udelay(100);		/* wait minimum 2 sample_frames at 32kHz ! */
+		mgr->last_reg_stat = reg;
+	}
+	rmh.cmd[1]  = REG_STATUS_CURRENT;
+	err = pcxhr_send_msg(mgr, &rmh);
+	if (err)
+		return err;
+	switch (rmh.stat[1] & 0x0f) {
+	case REG_STATUS_SYNC_32000 :	rate = 32000; break;
+	case REG_STATUS_SYNC_44100 :	rate = 44100; break;
+	case REG_STATUS_SYNC_48000 :	rate = 48000; break;
+	case REG_STATUS_SYNC_64000 :	rate = 64000; break;
+	case REG_STATUS_SYNC_88200 :	rate = 88200; break;
+	case REG_STATUS_SYNC_96000 :	rate = 96000; break;
+	case REG_STATUS_SYNC_128000 :	rate = 128000; break;
+	case REG_STATUS_SYNC_176400 :	rate = 176400; break;
+	case REG_STATUS_SYNC_192000 :	rate = 192000; break;
+	default: rate = 0;
+	}
+	snd_printdd("External clock is at %d Hz\n", rate);
+	*sample_rate = rate;
+	return 0;
+}
+
+
+/*
+ *  start or stop playback/capture substream
+ */
+static int pcxhr_set_stream_state(struct pcxhr_stream *stream)
+{
+	int err;
+	struct snd_pcxhr *chip;
+	struct pcxhr_rmh rmh;
+	int stream_mask, start;
+
+	if (stream->status == PCXHR_STREAM_STATUS_SCHEDULE_RUN)
+		start = 1;
+	else {
+		if (stream->status != PCXHR_STREAM_STATUS_SCHEDULE_STOP) {
+			snd_printk(KERN_ERR "ERROR pcxhr_set_stream_state CANNOT be stopped\n");
+			return -EINVAL;
+		}
+		start = 0;
+	}
+	if (!stream->substream)
+		return -EINVAL;
+
+	stream->timer_abs_periods = 0;
+	stream->timer_period_frag = 0;            /* reset theoretical stream pos */
+	stream->timer_buf_periods = 0;
+	stream->timer_is_synced = 0;
+
+	stream_mask = stream->pipe->is_capture ? 1 : 1<<stream->substream->number;
+
+	pcxhr_init_rmh(&rmh, start ? CMD_START_STREAM : CMD_STOP_STREAM);
+	pcxhr_set_pipe_cmd_params(&rmh, stream->pipe->is_capture,
+				  stream->pipe->first_audio, 0, stream_mask);
+
+	chip = snd_pcm_substream_chip(stream->substream);
+
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err)
+		snd_printk(KERN_ERR "ERROR pcxhr_set_stream_state err=%x;\n", err);
+	stream->status = start ? PCXHR_STREAM_STATUS_STARTED : PCXHR_STREAM_STATUS_STOPPED;
+	return err;
+}
+
+#define HEADER_FMT_BASE_LIN		0xfed00000
+#define HEADER_FMT_BASE_FLOAT		0xfad00000
+#define HEADER_FMT_INTEL		0x00008000
+#define HEADER_FMT_24BITS		0x00004000
+#define HEADER_FMT_16BITS		0x00002000
+#define HEADER_FMT_UPTO11		0x00000200
+#define HEADER_FMT_UPTO32		0x00000100
+#define HEADER_FMT_MONO			0x00000080
+
+static int pcxhr_set_format(struct pcxhr_stream *stream)
+{
+	int err, is_capture, sample_rate, stream_num;
+	struct snd_pcxhr *chip;
+	struct pcxhr_rmh rmh;
+	unsigned int header;
+
+	switch (stream->format) {
+	case SNDRV_PCM_FORMAT_U8:
+		header = HEADER_FMT_BASE_LIN;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		header = HEADER_FMT_BASE_LIN | HEADER_FMT_16BITS | HEADER_FMT_INTEL;
+		break;
+	case SNDRV_PCM_FORMAT_S16_BE:
+		header = HEADER_FMT_BASE_LIN | HEADER_FMT_16BITS;
+		break;
+	case SNDRV_PCM_FORMAT_S24_3LE:
+		header = HEADER_FMT_BASE_LIN | HEADER_FMT_24BITS | HEADER_FMT_INTEL;
+		break;
+	case SNDRV_PCM_FORMAT_S24_3BE:
+		header = HEADER_FMT_BASE_LIN | HEADER_FMT_24BITS;
+		break;
+	case SNDRV_PCM_FORMAT_FLOAT_LE:
+		header = HEADER_FMT_BASE_FLOAT | HEADER_FMT_INTEL;
+		break;
+	default:
+		snd_printk(KERN_ERR "error pcxhr_set_format() : unknown format\n");
+		return -EINVAL;
+	}
+	chip = snd_pcm_substream_chip(stream->substream);
+
+	sample_rate = chip->mgr->sample_rate;
+	if (sample_rate <= 32000 && sample_rate !=0) {
+		if (sample_rate <= 11025)
+			header |= HEADER_FMT_UPTO11;
+		else
+			header |= HEADER_FMT_UPTO32;
+	}
+	if (stream->channels == 1)
+		header |= HEADER_FMT_MONO;
+
+	is_capture = stream->pipe->is_capture;
+	stream_num = is_capture ? 0 : stream->substream->number;
+
+	pcxhr_init_rmh(&rmh, is_capture ? CMD_FORMAT_STREAM_IN : CMD_FORMAT_STREAM_OUT);
+	pcxhr_set_pipe_cmd_params(&rmh, is_capture, stream->pipe->first_audio, stream_num, 0);
+	if (is_capture)
+		rmh.cmd[0] |= 1<<12;
+	rmh.cmd[1] = 0;
+	rmh.cmd[2] = header >> 8;
+	rmh.cmd[3] = (header & 0xff) << 16;
+	rmh.cmd_len = 4;
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err)
+		snd_printk(KERN_ERR "ERROR pcxhr_set_format err=%x;\n", err);
+	return err;
+}
+
+static int pcxhr_update_r_buffer(struct pcxhr_stream *stream)
+{
+	int err, is_capture, stream_num;
+	struct pcxhr_rmh rmh;
+	struct snd_pcm_substream *subs = stream->substream;
+	struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
+
+	is_capture = (subs->stream == SNDRV_PCM_STREAM_CAPTURE);
+	stream_num = is_capture ? 0 : subs->number;
+
+	snd_printdd("pcxhr_update_r_buffer(pcm%c%d) : addr(%p) bytes(%x) subs(%d)\n",
+		    is_capture ? 'c' : 'p',
+		    chip->chip_idx, (void*)subs->runtime->dma_addr,
+		    subs->runtime->dma_bytes, subs->number);
+
+	pcxhr_init_rmh(&rmh, CMD_UPDATE_R_BUFFERS);
+	pcxhr_set_pipe_cmd_params(&rmh, is_capture, stream->pipe->first_audio, stream_num, 0);
+
+	snd_assert(subs->runtime->dma_bytes < 0x200000);	/* max buffer size is 2 MByte */
+	rmh.cmd[1] = subs->runtime->dma_bytes * 8;		/* size in bits */
+	rmh.cmd[2] = subs->runtime->dma_addr >> 24;		/* most significant byte */
+	rmh.cmd[2] |= 1<<19;					/* this is a circular buffer */
+	rmh.cmd[3] = subs->runtime->dma_addr & MASK_DSP_WORD;	/* least 3 significant bytes */
+	rmh.cmd_len = 4;
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err)
+		snd_printk(KERN_ERR "ERROR CMD_UPDATE_R_BUFFERS err=%x;\n", err);
+	return err;
+}
+
+
+#if 0
+static int pcxhr_pipe_sample_count(struct pcxhr_stream *stream, snd_pcm_uframes_t *sample_count)
+{
+	struct pcxhr_rmh rmh;
+	int err;
+	pcxhr_t *chip = snd_pcm_substream_chip(stream->substream);
+	pcxhr_init_rmh(&rmh, CMD_PIPE_SAMPLE_COUNT);
+	pcxhr_set_pipe_cmd_params(&rmh, stream->pipe->is_capture, 0, 0,
+				  1<<stream->pipe->first_audio);
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err == 0) {
+		*sample_count = ((snd_pcm_uframes_t)rmh.stat[0]) << 24;
+		*sample_count += (snd_pcm_uframes_t)rmh.stat[1];
+	}
+	snd_printdd("PIPE_SAMPLE_COUNT = %lx\n", *sample_count);
+	return err;
+}
+#endif
+
+static inline int pcxhr_stream_scheduled_get_pipe(struct pcxhr_stream *stream,
+						  struct pcxhr_pipe **pipe)
+{
+	if (stream->status == PCXHR_STREAM_STATUS_SCHEDULE_RUN) {
+		*pipe = stream->pipe;
+		return 1;
+	}
+	return 0;
+}
+
+static void pcxhr_trigger_tasklet(unsigned long arg)
+{
+	unsigned long flags;
+	int i, j, err;
+	struct pcxhr_pipe *pipe;
+	struct snd_pcxhr *chip;
+	struct pcxhr_mgr *mgr = (struct pcxhr_mgr*)(arg);
+	int capture_mask = 0;
+	int playback_mask = 0;
+
+#ifdef CONFIG_SND_DEBUG_DETECT
+	struct timeval my_tv1, my_tv2;
+	do_gettimeofday(&my_tv1);
+#endif
+	down(&mgr->setup_mutex);
+
+	/* check the pipes concerned and build pipe_array */
+	for (i = 0; i < mgr->num_cards; i++) {
+		chip = mgr->chip[i];
+		for (j = 0; j < chip->nb_streams_capt; j++) {
+			if (pcxhr_stream_scheduled_get_pipe(&chip->capture_stream[j], &pipe))
+				capture_mask |= (1 << pipe->first_audio);
+		}
+		for (j = 0; j < chip->nb_streams_play; j++) {
+			if (pcxhr_stream_scheduled_get_pipe(&chip->playback_stream[j], &pipe)) {
+				playback_mask |= (1 << pipe->first_audio);
+				break;	/* add only once, as all playback streams of
+					 * one chip use the same pipe
+					 */
+			}
+		}
+	}
+	if (capture_mask == 0 && playback_mask == 0) {
+		up(&mgr->setup_mutex);
+		snd_printk(KERN_ERR "pcxhr_trigger_tasklet : no pipes\n");
+		return;
+	}
+
+	snd_printdd("pcxhr_trigger_tasklet : playback_mask=%x capture_mask=%x\n",
+		    playback_mask, capture_mask);
+
+	/* synchronous stop of all the pipes concerned */
+	err = pcxhr_set_pipe_state(mgr,  playback_mask, capture_mask, 0);
+	if (err) {
+		up(&mgr->setup_mutex);
+		snd_printk(KERN_ERR "pcxhr_trigger_tasklet : error stop pipes (P%x C%x)\n",
+			   playback_mask, capture_mask);
+		return;
+	}
+
+	/* unfortunately the dsp lost format and buffer info with the stop pipe */
+	for (i = 0; i < mgr->num_cards; i++) {
+		struct pcxhr_stream *stream;
+		chip = mgr->chip[i];
+		for (j = 0; j < chip->nb_streams_capt; j++) {
+			stream = &chip->capture_stream[j];
+			if (pcxhr_stream_scheduled_get_pipe(stream, &pipe)) {
+				err = pcxhr_set_format(stream);
+				err = pcxhr_update_r_buffer(stream);
+			}
+		}
+		for (j = 0; j < chip->nb_streams_play; j++) {
+			stream = &chip->playback_stream[j];
+			if (pcxhr_stream_scheduled_get_pipe(stream, &pipe)) {
+				err = pcxhr_set_format(stream);
+				err = pcxhr_update_r_buffer(stream);
+			}
+		}
+	}
+	/* start all the streams */
+	for (i = 0; i < mgr->num_cards; i++) {
+		struct pcxhr_stream *stream;
+		chip = mgr->chip[i];
+		for (j = 0; j < chip->nb_streams_capt; j++) {
+			stream = &chip->capture_stream[j];
+			if (pcxhr_stream_scheduled_get_pipe(stream, &pipe))
+				err = pcxhr_set_stream_state(stream);
+		}
+		for (j = 0; j < chip->nb_streams_play; j++) {
+			stream = &chip->playback_stream[j];
+			if (pcxhr_stream_scheduled_get_pipe(stream, &pipe))
+				err = pcxhr_set_stream_state(stream);
+		}
+	}
+
+	/* synchronous start of all the pipes concerned */
+	err = pcxhr_set_pipe_state(mgr, playback_mask, capture_mask, 1);
+	if (err) {
+		up(&mgr->setup_mutex);
+		snd_printk(KERN_ERR "pcxhr_trigger_tasklet : error start pipes (P%x C%x)\n",
+			   playback_mask, capture_mask);
+		return;
+	}
+
+	/* put the streams into the running state now (increment pointer by interrupt) */
+	spin_lock_irqsave(&mgr->lock, flags);
+	for ( i =0; i < mgr->num_cards; i++) {
+		struct pcxhr_stream *stream;
+		chip = mgr->chip[i];
+		for(j = 0; j < chip->nb_streams_capt; j++) {
+			stream = &chip->capture_stream[j];
+			if(stream->status == PCXHR_STREAM_STATUS_STARTED)
+				stream->status = PCXHR_STREAM_STATUS_RUNNING;
+		}
+		for (j = 0; j < chip->nb_streams_play; j++) {
+			stream = &chip->playback_stream[j];
+			if (stream->status == PCXHR_STREAM_STATUS_STARTED) {
+				/* playback will already have advanced ! */
+				stream->timer_period_frag += PCXHR_GRANULARITY;
+				stream->status = PCXHR_STREAM_STATUS_RUNNING;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&mgr->lock, flags);
+
+	up(&mgr->setup_mutex);
+
+#ifdef CONFIG_SND_DEBUG_DETECT
+	do_gettimeofday(&my_tv2);
+	snd_printdd("***TRIGGER TASKLET*** TIME = %ld (err = %x)\n",
+		    my_tv2.tv_usec - my_tv1.tv_usec, err);
+#endif
+}
+
+
+/*
+ *  trigger callback
+ */
+static int pcxhr_trigger(struct snd_pcm_substream *subs, int cmd)
+{
+	struct pcxhr_stream *stream;
+	struct list_head *pos;
+	struct snd_pcm_substream *s;
+	int i;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		snd_printdd("SNDRV_PCM_TRIGGER_START\n");
+		i = 0;
+		snd_pcm_group_for_each(pos, subs) {
+			s = snd_pcm_group_substream_entry(pos);
+			stream = s->runtime->private_data;
+			stream->status = PCXHR_STREAM_STATUS_SCHEDULE_RUN;
+			snd_pcm_trigger_done(s, subs);
+			i++;
+		}
+		if (i==1) {
+			snd_printdd("Only one Substream %c %d\n",
+				    stream->pipe->is_capture ? 'C' : 'P',
+				    stream->pipe->first_audio);
+			if (pcxhr_set_format(stream))
+				return -EINVAL;
+			if (pcxhr_update_r_buffer(stream))
+				return -EINVAL;
+
+			if (pcxhr_set_stream_state(stream))
+				return -EINVAL;
+			stream->status = PCXHR_STREAM_STATUS_RUNNING;
+		} else {
+			struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
+			tasklet_hi_schedule(&chip->mgr->trigger_taskq);
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		snd_printdd("SNDRV_PCM_TRIGGER_STOP\n");
+		snd_pcm_group_for_each(pos, subs) {
+			s = snd_pcm_group_substream_entry(pos);
+			stream = s->runtime->private_data;
+			stream->status = PCXHR_STREAM_STATUS_SCHEDULE_STOP;
+			if (pcxhr_set_stream_state(stream))
+				return -EINVAL;
+			snd_pcm_trigger_done(s, subs);
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		/* TODO */
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+
+static int pcxhr_hardware_timer(struct pcxhr_mgr *mgr, int start)
+{
+	struct pcxhr_rmh rmh;
+	int err;
+
+	pcxhr_init_rmh(&rmh, CMD_SET_TIMER_INTERRUPT);
+	if (start) {
+		mgr->dsp_time_last = PCXHR_DSP_TIME_INVALID;	/* last dsp time invalid */
+		rmh.cmd[0] |= PCXHR_GRANULARITY;
+	}
+	err = pcxhr_send_msg(mgr, &rmh);
+	if (err < 0)
+		snd_printk(KERN_ERR "error pcxhr_hardware_timer err(%x)\n", err);
+	return err;
+}
+
+/*
+ *  prepare callback for all pcms
+ */
+static int pcxhr_prepare(struct snd_pcm_substream *subs)
+{
+	struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
+	struct pcxhr_mgr *mgr = chip->mgr;
+	/*
+	struct pcxhr_stream *stream = (pcxhr_stream_t*)subs->runtime->private_data;
+	*/
+	int err = 0;
+
+	snd_printdd("pcxhr_prepare : period_size(%lx) periods(%x) buffer_size(%lx)\n",
+		    subs->runtime->period_size, subs->runtime->periods,
+		    subs->runtime->buffer_size);
+
+	/*
+	if(subs->runtime->period_size <= PCXHR_GRANULARITY) {
+		snd_printk(KERN_ERR "pcxhr_prepare : error period_size too small (%x)\n",
+			   (unsigned int)subs->runtime->period_size);
+		return -EINVAL;
+	}
+	*/
+
+	down(&mgr->setup_mutex);
+
+	do {
+		/* if the stream was stopped before, format and buffer were reset */
+		/*
+		if(stream->status == PCXHR_STREAM_STATUS_STOPPED) {
+			err = pcxhr_set_format(stream);
+			if(err) break;
+			err = pcxhr_update_r_buffer(stream);
+			if(err) break;
+		}
+		*/
+
+		/* only the first stream can choose the sample rate */
+		/* the further opened streams will be limited to its frequency (see open) */
+		/* set the clock only once (first stream) */
+		if (mgr->sample_rate == 0) {
+			err = pcxhr_set_clock(mgr, subs->runtime->rate);
+			if (err)
+				break;
+			mgr->sample_rate = subs->runtime->rate;
+
+			err = pcxhr_hardware_timer(mgr, 1);	/* start the DSP-timer */
+		}
+	} while(0);	/* do only once (so we can use break instead of goto) */
+
+	up(&mgr->setup_mutex);
+
+	return err;
+}
+
+
+/*
+ *  HW_PARAMS callback for all pcms
+ */
+static int pcxhr_hw_params(struct snd_pcm_substream *subs,
+			   struct snd_pcm_hw_params *hw)
+{
+	struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
+	struct pcxhr_mgr *mgr = chip->mgr;
+	struct pcxhr_stream *stream = subs->runtime->private_data;
+	snd_pcm_format_t format;
+	int err;
+	int channels;
+
+	/* set up channels */
+	channels = params_channels(hw);
+
+	/*  set up format for the stream */
+	format = params_format(hw);
+
+	down(&mgr->setup_mutex);
+
+	stream->channels = channels;
+	stream->format = format;
+
+	/* set the format to the board */
+	/*
+	err = pcxhr_set_format(stream);
+	if(err) {
+		up(&mgr->setup_mutex);
+		return err;
+	}
+	*/
+	/* allocate buffer */
+	err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
+
+	/*
+	if (err > 0) {
+		err = pcxhr_update_r_buffer(stream);
+	}
+	*/
+	up(&mgr->setup_mutex);
+
+	return err;
+}
+
+static int pcxhr_hw_free(struct snd_pcm_substream *subs)
+{
+	snd_pcm_lib_free_pages(subs);
+	return 0;
+}
+
+
+/*
+ *  CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
+ */
+static struct snd_pcm_hardware pcxhr_caps =
+{
+	.info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+			      SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
+			      0 /*SNDRV_PCM_INFO_PAUSE*/),
+	.formats	  = ( SNDRV_PCM_FMTBIT_U8 |
+			      SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
+			      SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
+			      SNDRV_PCM_FMTBIT_FLOAT_LE ),
+	.rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_192000,
+	.rate_min         = 8000,
+	.rate_max         = 192000,
+	.channels_min     = 1,
+	.channels_max     = 2,
+	.buffer_bytes_max = (32*1024),
+	/* 1 byte == 1 frame U8 mono (PCXHR_GRANULARITY is frames!) */
+	.period_bytes_min = (2*PCXHR_GRANULARITY),
+	.period_bytes_max = (16*1024),
+	.periods_min      = 2,
+	.periods_max      = (32*1024/PCXHR_GRANULARITY),
+};
+
+
+static int pcxhr_open(struct snd_pcm_substream *subs)
+{
+	struct snd_pcxhr       *chip = snd_pcm_substream_chip(subs);
+	struct pcxhr_mgr       *mgr = chip->mgr;
+	struct snd_pcm_runtime *runtime = subs->runtime;
+	struct pcxhr_stream    *stream;
+	int                 is_capture;
+
+	down(&mgr->setup_mutex);
+
+	/* copy the struct snd_pcm_hardware struct */
+	runtime->hw = pcxhr_caps;
+
+	if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK ) {
+		snd_printdd("pcxhr_open playback chip%d subs%d\n",
+			    chip->chip_idx, subs->number);
+		is_capture = 0;
+		stream = &chip->playback_stream[subs->number];
+	} else {
+		snd_printdd("pcxhr_open capture chip%d subs%d\n",
+			    chip->chip_idx, subs->number);
+		is_capture = 1;
+		if (mgr->mono_capture)
+			runtime->hw.channels_max = 1;
+		else
+			runtime->hw.channels_min = 2;
+		stream = &chip->capture_stream[subs->number];
+	}
+	if (stream->status != PCXHR_STREAM_STATUS_FREE){
+		/* streams in use */
+		snd_printk(KERN_ERR "pcxhr_open chip%d subs%d in use\n",
+			   chip->chip_idx, subs->number);
+		up(&mgr->setup_mutex);
+		return -EBUSY;
+	}
+
+	/* if a sample rate is already used or fixed by external clock,
+	 * the stream cannot change
+	 */
+	if (mgr->sample_rate)
+		runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
+	else {
+		if (mgr->use_clock_type != PCXHR_CLOCK_TYPE_INTERNAL) {
+			int external_rate;
+			if (pcxhr_get_external_clock(mgr, mgr->use_clock_type,
+						     &external_rate) ||
+			    external_rate == 0) {
+				/* cannot detect the external clock rate */
+				up(&mgr->setup_mutex);
+				return -EBUSY;
+			}
+			runtime->hw.rate_min = runtime->hw.rate_max = external_rate;
+		}
+	}
+
+	stream->status      = PCXHR_STREAM_STATUS_OPEN;
+	stream->substream   = subs;
+	stream->channels    = 0; /* not configured yet */
+
+	runtime->private_data = stream;
+
+	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4);
+	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);
+
+	mgr->ref_count_rate++;
+
+	up(&mgr->setup_mutex);
+	return 0;
+}
+
+
+static int pcxhr_close(struct snd_pcm_substream *subs)
+{
+	struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
+	struct pcxhr_mgr *mgr = chip->mgr;
+	struct pcxhr_stream *stream = subs->runtime->private_data;
+
+	down(&mgr->setup_mutex);
+
+	snd_printdd("pcxhr_close chip%d subs%d\n", chip->chip_idx, subs->number);
+
+	/* sample rate released */
+	if (--mgr->ref_count_rate == 0) {
+		mgr->sample_rate = 0;		/* the sample rate is no more locked */
+		pcxhr_hardware_timer(mgr, 0);	/* stop the DSP-timer */
+	}
+
+	stream->status    = PCXHR_STREAM_STATUS_FREE;
+	stream->substream = NULL;
+
+	up(&mgr->setup_mutex);
+
+	return 0;
+}
+
+
+static snd_pcm_uframes_t pcxhr_stream_pointer(struct snd_pcm_substream *subs)
+{
+	unsigned long flags;
+	u_int32_t timer_period_frag;
+	int timer_buf_periods;
+	struct snd_pcxhr *chip = snd_pcm_substream_chip(subs);
+	struct snd_pcm_runtime *runtime = subs->runtime;
+	struct pcxhr_stream *stream  = runtime->private_data;
+
+	spin_lock_irqsave(&chip->mgr->lock, flags);
+
+	/* get the period fragment and the nb of periods in the buffer */
+	timer_period_frag = stream->timer_period_frag;
+	timer_buf_periods = stream->timer_buf_periods;
+
+	spin_unlock_irqres