[ALSA] Add PCXHR driver

Modules: Documentation,PCI drivers,Digigram PCXHR driver

Add Digigram PCXHR driver.

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

1 files changed, 1020 insertions, 0 deletions

diff --git a/sound/pci/pcxhr/pcxhr_mixer.c b/sound/pci/pcxhr/pcxhr_mixer.c
new file mode 100644
index 00000000000..760e733ac25
--- /dev/null
+++ b/sound/pci/pcxhr/pcxhr_mixer.c
@@ -0,0 +1,1020 @@
+#define __NO_VERSION__
+/*
+ * Driver for Digigram pcxhr compatible soundcards
+ *
+ * mixer 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/time.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <sound/core.h>
+#include "pcxhr.h"
+#include "pcxhr_hwdep.h"
+#include "pcxhr_core.h"
+#include <sound/control.h>
+#include <sound/asoundef.h>
+#include "pcxhr_mixer.h"
+
+
+#define PCXHR_ANALOG_CAPTURE_LEVEL_MIN   0	/* -96.0 dB */
+#define PCXHR_ANALOG_CAPTURE_LEVEL_MAX   255	/* +31.5 dB */
+#define PCXHR_ANALOG_CAPTURE_ZERO_LEVEL  224	/* +16.0 dB ( +31.5 dB - fix level +15.5 dB ) */
+
+#define PCXHR_ANALOG_PLAYBACK_LEVEL_MIN  0	/* -128.0 dB */
+#define PCXHR_ANALOG_PLAYBACK_LEVEL_MAX  128	/*    0.0 dB */
+#define PCXHR_ANALOG_PLAYBACK_ZERO_LEVEL 104	/*  -24.0 dB ( 0.0 dB - fix level +24.0 dB ) */
+
+static int pcxhr_update_analog_audio_level(struct snd_pcxhr *chip, int is_capture, int channel)
+{
+	int err, vol;
+	struct pcxhr_rmh rmh;
+
+	pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
+	if (is_capture) {
+		rmh.cmd[0] |= IO_NUM_REG_IN_ANA_LEVEL;
+		rmh.cmd[2] = chip->analog_capture_volume[channel];
+	} else {
+		rmh.cmd[0] |= IO_NUM_REG_OUT_ANA_LEVEL;
+		if (chip->analog_playback_active[channel])
+			vol = chip->analog_playback_volume[channel];
+		else
+			vol = PCXHR_ANALOG_PLAYBACK_LEVEL_MIN;
+		rmh.cmd[2] = PCXHR_ANALOG_PLAYBACK_LEVEL_MAX - vol;	/* playback analog levels are inversed */
+	}
+	rmh.cmd[1]  = 1 << ((2 * chip->chip_idx) + channel);	/* audio mask */
+	rmh.cmd_len = 3;
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err < 0) {
+		snd_printk(KERN_DEBUG "error update_analog_audio_level card(%d) "
+			   "is_capture(%d) err(%x)\n", chip->chip_idx, is_capture, err);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*
+ * analog level control
+ */
+static int pcxhr_analog_vol_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	if (kcontrol->private_value == 0) {	/* playback */
+		uinfo->value.integer.min = PCXHR_ANALOG_PLAYBACK_LEVEL_MIN;	/* -128 dB */
+		uinfo->value.integer.max = PCXHR_ANALOG_PLAYBACK_LEVEL_MAX;	/* 0 dB */
+	} else {				/* capture */
+		uinfo->value.integer.min = PCXHR_ANALOG_CAPTURE_LEVEL_MIN;	/* -96 dB */
+		uinfo->value.integer.max = PCXHR_ANALOG_CAPTURE_LEVEL_MAX;	/* 31.5 dB */
+	}
+	return 0;
+}
+
+static int pcxhr_analog_vol_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	down(&chip->mgr->mixer_mutex);
+	if (kcontrol->private_value == 0) {	/* playback */
+		ucontrol->value.integer.value[0] = chip->analog_playback_volume[0];
+		ucontrol->value.integer.value[1] = chip->analog_playback_volume[1];
+	} else {				/* capture */
+		ucontrol->value.integer.value[0] = chip->analog_capture_volume[0];
+		ucontrol->value.integer.value[1] = chip->analog_capture_volume[1];
+	}
+	up(&chip->mgr->mixer_mutex);
+	return 0;
+}
+
+static int pcxhr_analog_vol_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int is_capture, i;
+
+	down(&chip->mgr->mixer_mutex);
+	is_capture = (kcontrol->private_value != 0);
+	for (i = 0; i < 2; i++) {
+		int  new_volume = ucontrol->value.integer.value[i];
+		int* stored_volume = is_capture ? &chip->analog_capture_volume[i] :
+			&chip->analog_playback_volume[i];
+		if (*stored_volume != new_volume) {
+			*stored_volume = new_volume;
+			changed = 1;
+			pcxhr_update_analog_audio_level(chip, is_capture, i);
+		}
+	}
+	up(&chip->mgr->mixer_mutex);
+	return changed;
+}
+
+static struct snd_kcontrol_new pcxhr_control_analog_level = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	/* name will be filled later */
+	.info =		pcxhr_analog_vol_info,
+	.get =		pcxhr_analog_vol_get,
+	.put =		pcxhr_analog_vol_put,
+};
+
+/* shared */
+static int pcxhr_sw_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 2;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int pcxhr_audio_sw_get(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+
+	down(&chip->mgr->mixer_mutex);
+	ucontrol->value.integer.value[0] = chip->analog_playback_active[0];
+	ucontrol->value.integer.value[1] = chip->analog_playback_active[1];
+	up(&chip->mgr->mixer_mutex);
+	return 0;
+}
+
+static int pcxhr_audio_sw_put(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int i, changed = 0;
+	down(&chip->mgr->mixer_mutex);
+	for(i = 0; i < 2; i++) {
+		if (chip->analog_playback_active[i] != ucontrol->value.integer.value[i]) {
+			chip->analog_playback_active[i] = ucontrol->value.integer.value[i];
+			changed = 1;
+			pcxhr_update_analog_audio_level(chip, 0, i);	/* update playback levels */
+		}
+	}
+	up(&chip->mgr->mixer_mutex);
+	return changed;
+}
+
+static struct snd_kcontrol_new pcxhr_control_output_switch = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =		"Master Playback Switch",
+	.info =		pcxhr_sw_info,		/* shared */
+	.get =		pcxhr_audio_sw_get,
+	.put =		pcxhr_audio_sw_put
+};
+
+
+#define PCXHR_DIGITAL_LEVEL_MIN		0x000	/* -110 dB */
+#define PCXHR_DIGITAL_LEVEL_MAX		0x1ff	/* +18 dB */
+#define PCXHR_DIGITAL_ZERO_LEVEL	0x1b7	/*  0 dB */
+
+
+#define MORE_THAN_ONE_STREAM_LEVEL	0x000001
+#define VALID_STREAM_PAN_LEVEL_MASK	0x800000
+#define VALID_STREAM_LEVEL_MASK		0x400000
+#define VALID_STREAM_LEVEL_1_MASK	0x200000
+#define VALID_STREAM_LEVEL_2_MASK	0x100000
+
+static int pcxhr_update_playback_stream_level(struct snd_pcxhr* chip, int idx)
+{
+	int err;
+	struct pcxhr_rmh rmh;
+	struct pcxhr_pipe *pipe = &chip->playback_pipe;
+	int left, right;
+
+	if (chip->digital_playback_active[idx][0])
+		left = chip->digital_playback_volume[idx][0];
+	else
+		left = PCXHR_DIGITAL_LEVEL_MIN;
+	if (chip->digital_playback_active[idx][1])
+		right = chip->digital_playback_volume[idx][1];
+	else
+		right = PCXHR_DIGITAL_LEVEL_MIN;
+
+	pcxhr_init_rmh(&rmh, CMD_STREAM_OUT_LEVEL_ADJUST);
+	/* add pipe and stream mask */
+	pcxhr_set_pipe_cmd_params(&rmh, 0, pipe->first_audio, 0, 1<<idx);
+	/* volume left->left / right->right panoramic level */
+	rmh.cmd[0] |= MORE_THAN_ONE_STREAM_LEVEL;
+	rmh.cmd[2]  = VALID_STREAM_PAN_LEVEL_MASK | VALID_STREAM_LEVEL_1_MASK;
+	rmh.cmd[2] |= (left << 10);
+	rmh.cmd[3]  = VALID_STREAM_PAN_LEVEL_MASK | VALID_STREAM_LEVEL_2_MASK;
+	rmh.cmd[3] |= right;
+	rmh.cmd_len = 4;
+
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err < 0) {
+		snd_printk(KERN_DEBUG "error update_playback_stream_level "
+			   "card(%d) err(%x)\n", chip->chip_idx, err);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+#define AUDIO_IO_HAS_MUTE_LEVEL		0x400000
+#define AUDIO_IO_HAS_MUTE_MONITOR_1	0x200000
+#define VALID_AUDIO_IO_DIGITAL_LEVEL	0x000001
+#define VALID_AUDIO_IO_MONITOR_LEVEL	0x000002
+#define VALID_AUDIO_IO_MUTE_LEVEL	0x000004
+#define VALID_AUDIO_IO_MUTE_MONITOR_1	0x000008
+
+static int pcxhr_update_audio_pipe_level(struct snd_pcxhr* chip, int capture, int channel)
+{
+	int err;
+	struct pcxhr_rmh rmh;
+	struct pcxhr_pipe *pipe;
+
+	if (capture)
+		pipe = &chip->capture_pipe[0];
+	else
+		pipe = &chip->playback_pipe;
+
+	pcxhr_init_rmh(&rmh, CMD_AUDIO_LEVEL_ADJUST);
+	/* add channel mask */
+	pcxhr_set_pipe_cmd_params(&rmh, capture, 0, 0, 1 << (channel + pipe->first_audio));
+	/* TODO : if mask (3 << pipe->first_audio) is used, left and right channel
+	 * will be programmed to the same params
+	 */
+	if (capture) {
+		rmh.cmd[0] |= VALID_AUDIO_IO_DIGITAL_LEVEL;
+		/* VALID_AUDIO_IO_MUTE_LEVEL not yet handled (capture pipe level) */
+		rmh.cmd[2] = chip->digital_capture_volume[channel];
+	} else {
+		rmh.cmd[0] |= VALID_AUDIO_IO_MONITOR_LEVEL | VALID_AUDIO_IO_MUTE_MONITOR_1;
+		/* VALID_AUDIO_IO_DIGITAL_LEVEL and VALID_AUDIO_IO_MUTE_LEVEL not yet
+		 * handled (playback pipe level)
+		 */
+		rmh.cmd[2] = chip->monitoring_volume[channel] << 10;
+		if (chip->monitoring_active[channel] == 0)
+			rmh.cmd[2] |= AUDIO_IO_HAS_MUTE_MONITOR_1;
+	}
+	rmh.cmd_len = 3;
+
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if(err<0) {
+		snd_printk(KERN_DEBUG "error update_audio_level card(%d) err(%x)\n",
+			   chip->chip_idx, err);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+
+/* shared */
+static int pcxhr_digital_vol_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = PCXHR_DIGITAL_LEVEL_MIN;   /* -109.5 dB */
+	uinfo->value.integer.max = PCXHR_DIGITAL_LEVEL_MAX;   /*   18.0 dB */
+	return 0;
+}
+
+
+static int pcxhr_pcm_vol_get(struct snd_kcontrol *kcontrol,
+			     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);		/* index */
+	int *stored_volume;
+	int is_capture = kcontrol->private_value;
+
+	down(&chip->mgr->mixer_mutex);
+	if (is_capture)
+		stored_volume = chip->digital_capture_volume;		/* digital capture */
+	else
+		stored_volume = chip->digital_playback_volume[idx];	/* digital playback */
+	ucontrol->value.integer.value[0] = stored_volume[0];
+	ucontrol->value.integer.value[1] = stored_volume[1];
+	up(&chip->mgr->mixer_mutex);
+	return 0;
+}
+
+static int pcxhr_pcm_vol_put(struct snd_kcontrol *kcontrol,
+			     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);		/* index */
+	int changed = 0;
+	int is_capture = kcontrol->private_value;
+	int *stored_volume;
+	int i;
+
+	down(&chip->mgr->mixer_mutex);
+	if (is_capture)
+		stored_volume = chip->digital_capture_volume;		/* digital capture */
+	else
+		stored_volume = chip->digital_playback_volume[idx];	/* digital playback */
+	for (i = 0; i < 2; i++) {
+		if (stored_volume[i] != ucontrol->value.integer.value[i]) {
+			stored_volume[i] = ucontrol->value.integer.value[i];
+			changed = 1;
+			if (is_capture)	/* update capture volume */
+				pcxhr_update_audio_pipe_level(chip, 1, i);
+		}
+	}
+	if (! is_capture && changed)
+		pcxhr_update_playback_stream_level(chip, idx);	/* update playback volume */
+	up(&chip->mgr->mixer_mutex);
+	return changed;
+}
+
+static struct snd_kcontrol_new snd_pcxhr_pcm_vol =
+{
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	/* name will be filled later */
+	/* count will be filled later */
+	.info =		pcxhr_digital_vol_info,		/* shared */
+	.get =		pcxhr_pcm_vol_get,
+	.put =		pcxhr_pcm_vol_put,
+};
+
+
+static int pcxhr_pcm_sw_get(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); /* index */
+
+	down(&chip->mgr->mixer_mutex);
+	ucontrol->value.integer.value[0] = chip->digital_playback_active[idx][0];
+	ucontrol->value.integer.value[1] = chip->digital_playback_active[idx][1];
+	up(&chip->mgr->mixer_mutex);
+	return 0;
+}
+
+static int pcxhr_pcm_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); /* index */
+	int i, j;
+
+	down(&chip->mgr->mixer_mutex);
+	j = idx;
+	for (i = 0; i < 2; i++) {
+		if (chip->digital_playback_active[j][i] != ucontrol->value.integer.value[i]) {
+			chip->digital_playback_active[j][i] = ucontrol->value.integer.value[i];
+			changed = 1;
+		}
+	}
+	if (changed)
+		pcxhr_update_playback_stream_level(chip, idx);
+	up(&chip->mgr->mixer_mutex);
+	return changed;
+}
+
+static struct snd_kcontrol_new pcxhr_control_pcm_switch = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =		"PCM Playback Switch",
+	.count =	PCXHR_PLAYBACK_STREAMS,
+	.info =		pcxhr_sw_info,		/* shared */
+	.get =		pcxhr_pcm_sw_get,
+	.put =		pcxhr_pcm_sw_put
+};
+
+
+/*
+ * monitoring level control
+ */
+
+static int pcxhr_monitor_vol_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	down(&chip->mgr->mixer_mutex);
+	ucontrol->value.integer.value[0] = chip->monitoring_volume[0];
+	ucontrol->value.integer.value[1] = chip->monitoring_volume[1];
+	up(&chip->mgr->mixer_mutex);
+	return 0;
+}
+
+static int pcxhr_monitor_vol_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int i;
+
+	down(&chip->mgr->mixer_mutex);
+	for (i = 0; i < 2; i++) {
+		if (chip->monitoring_volume[i] != ucontrol->value.integer.value[i]) {
+			chip->monitoring_volume[i] = ucontrol->value.integer.value[i];
+			if(chip->monitoring_active[i])	/* do only when monitoring is unmuted */
+				/* update monitoring volume and mute */
+				pcxhr_update_audio_pipe_level(chip, 0, i);
+			changed = 1;
+		}
+	}
+	up(&chip->mgr->mixer_mutex);
+	return changed;
+}
+
+static struct snd_kcontrol_new pcxhr_control_monitor_vol = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =         "Monitoring Volume",
+	.info =		pcxhr_digital_vol_info,		/* shared */
+	.get =		pcxhr_monitor_vol_get,
+	.put =		pcxhr_monitor_vol_put,
+};
+
+/*
+ * monitoring switch control
+ */
+
+static int pcxhr_monitor_sw_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	down(&chip->mgr->mixer_mutex);
+	ucontrol->value.integer.value[0] = chip->monitoring_active[0];
+	ucontrol->value.integer.value[1] = chip->monitoring_active[1];
+	up(&chip->mgr->mixer_mutex);
+	return 0;
+}
+
+static int pcxhr_monitor_sw_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int changed = 0;
+	int i;
+
+	down(&chip->mgr->mixer_mutex);
+	for (i = 0; i < 2; i++) {
+		if (chip->monitoring_active[i] != ucontrol->value.integer.value[i]) {
+			chip->monitoring_active[i] = ucontrol->value.integer.value[i];
+			changed |= (1<<i); /* mask 0x01 and 0x02 */
+		}
+	}
+	if(changed & 0x01)
+		/* update left monitoring volume and mute */
+		pcxhr_update_audio_pipe_level(chip, 0, 0);
+	if(changed & 0x02)
+		/* update right monitoring volume and mute */
+		pcxhr_update_audio_pipe_level(chip, 0, 1);
+
+	up(&chip->mgr->mixer_mutex);
+	return (changed != 0);
+}
+
+static struct snd_kcontrol_new pcxhr_control_monitor_sw = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =         "Monitoring Switch",
+	.info =         pcxhr_sw_info,		/* shared */
+	.get =          pcxhr_monitor_sw_get,
+	.put =          pcxhr_monitor_sw_put
+};
+
+
+
+/*
+ * audio source select
+ */
+#define PCXHR_SOURCE_AUDIO01_UER	0x000100
+#define PCXHR_SOURCE_AUDIO01_SYNC	0x000200
+#define PCXHR_SOURCE_AUDIO23_UER	0x000400
+#define PCXHR_SOURCE_AUDIO45_UER	0x001000
+#define PCXHR_SOURCE_AUDIO67_UER	0x040000
+
+static int pcxhr_set_audio_source(struct snd_pcxhr* chip)
+{
+	struct pcxhr_rmh rmh;
+	unsigned int mask, reg;
+	unsigned int codec;
+	int err, use_src, changed;
+
+	switch (chip->chip_idx) {
+	case 0 : mask = PCXHR_SOURCE_AUDIO01_UER; codec = CS8420_01_CS; break;
+	case 1 : mask = PCXHR_SOURCE_AUDIO23_UER; codec = CS8420_23_CS; break;
+	case 2 : mask = PCXHR_SOURCE_AUDIO45_UER; codec = CS8420_45_CS; break;
+	case 3 : mask = PCXHR_SOURCE_AUDIO67_UER; codec = CS8420_67_CS; break;
+	default: return -EINVAL;
+	}
+	reg = 0;	/* audio source from analog plug */
+	use_src = 0;	/* do not activate codec SRC */
+
+	if (chip->audio_capture_source != 0) {
+		reg = mask;	/* audio source from digital plug */
+		if (chip->audio_capture_source == 2)
+			use_src = 1;
+	}
+	/* set the input source */
+	pcxhr_write_io_num_reg_cont(chip->mgr, mask, reg, &changed);
+	/* resync them (otherwise channel inversion possible) */
+	if (changed) {
+		pcxhr_init_rmh(&rmh, CMD_RESYNC_AUDIO_INPUTS);
+		rmh.cmd[0] |= (1 << chip->chip_idx);
+		err = pcxhr_send_msg(chip->mgr, &rmh);
+		if (err)
+			return err;
+	}
+	pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);	/* set codec SRC on off */
+	rmh.cmd_len = 3;
+	rmh.cmd[0] |= IO_NUM_UER_CHIP_REG;
+	rmh.cmd[1] = codec;
+	rmh.cmd[2] = (CS8420_DATA_FLOW_CTL & CHIP_SIG_AND_MAP_SPI) | (use_src ? 0x41 : 0x54);
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if(err)
+		return err;
+	rmh.cmd[2] = (CS8420_CLOCK_SRC_CTL & CHIP_SIG_AND_MAP_SPI) | (use_src ? 0x41 : 0x49);
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	return err;
+}
+
+static int pcxhr_audio_src_info(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_info *uinfo)
+{
+	static char *texts[3] = {"Analog", "Digital", "Digi+SRC"};
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = 3;
+	if (uinfo->value.enumerated.item > 2)
+		uinfo->value.enumerated.item = 2;
+	strcpy(uinfo->value.enumerated.name,
+		texts[uinfo->value.enumerated.item]);
+	return 0;
+}
+
+static int pcxhr_audio_src_get(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.enumerated.item[0] = chip->audio_capture_source;
+	return 0;
+}
+
+static int pcxhr_audio_src_put(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int ret = 0;
+
+	down(&chip->mgr->mixer_mutex);
+	if (chip->audio_capture_source != ucontrol->value.enumerated.item[0]) {
+		chip->audio_capture_source = ucontrol->value.enumerated.item[0];
+		pcxhr_set_audio_source(chip);
+		ret = 1;
+	}
+	up(&chip->mgr->mixer_mutex);
+	return ret;
+}
+
+static struct snd_kcontrol_new pcxhr_control_audio_src = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =		"Capture Source",
+	.info =		pcxhr_audio_src_info,
+	.get =		pcxhr_audio_src_get,
+	.put =		pcxhr_audio_src_put,
+};
+
+
+/*
+ * clock type selection
+ * enum pcxhr_clock_type {
+ *		PCXHR_CLOCK_TYPE_INTERNAL = 0,
+ *		PCXHR_CLOCK_TYPE_WORD_CLOCK,
+ *		PCXHR_CLOCK_TYPE_AES_SYNC,
+ *		PCXHR_CLOCK_TYPE_AES_1,
+ *		PCXHR_CLOCK_TYPE_AES_2,
+ *		PCXHR_CLOCK_TYPE_AES_3,
+ *		PCXHR_CLOCK_TYPE_AES_4,
+ *	};
+ */
+
+static int pcxhr_clock_type_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	static char *texts[7] = {
+		"Internal", "WordClock", "AES Sync", "AES 1", "AES 2", "AES 3", "AES 4"
+	};
+	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
+	int clock_items = 3 + mgr->capture_chips;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = clock_items;
+	if (uinfo->value.enumerated.item >= clock_items)
+		uinfo->value.enumerated.item = clock_items-1;
+	strcpy(uinfo->value.enumerated.name,
+		texts[uinfo->value.enumerated.item]);
+	return 0;
+}
+
+static int pcxhr_clock_type_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.enumerated.item[0] = mgr->use_clock_type;
+	return 0;
+}
+
+static int pcxhr_clock_type_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
+	int rate, ret = 0;
+
+	down(&mgr->mixer_mutex);
+	if (mgr->use_clock_type != ucontrol->value.enumerated.item[0]) {
+		down(&mgr->setup_mutex);
+		mgr->use_clock_type = ucontrol->value.enumerated.item[0];
+		if (mgr->use_clock_type)
+			pcxhr_get_external_clock(mgr, mgr->use_clock_type, &rate);
+		else
+			rate = mgr->sample_rate;
+		if (rate) {
+			pcxhr_set_clock(mgr, rate);
+			if (mgr->sample_rate)
+				mgr->sample_rate = rate;
+		}
+		up(&mgr->setup_mutex);
+		ret = 1;	/* return 1 even if the set was not done. ok ? */
+	}
+	up(&mgr->mixer_mutex);
+	return ret;
+}
+
+static struct snd_kcontrol_new pcxhr_control_clock_type = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name =		"Clock Mode",
+	.info =		pcxhr_clock_type_info,
+	.get =		pcxhr_clock_type_get,
+	.put =		pcxhr_clock_type_put,
+};
+
+/*
+ * clock rate control
+ * specific control that scans the sample rates on the external plugs
+ */
+static int pcxhr_clock_rate_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 3 + mgr->capture_chips;
+	uinfo->value.integer.min = 0;		/* clock not present */
+	uinfo->value.integer.max = 192000;	/* max sample rate 192 kHz */
+	return 0;
+}
+
+static int pcxhr_clock_rate_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
+	int i, err, rate;
+
+	down(&mgr->mixer_mutex);
+	for(i = 0; i < 3 + mgr->capture_chips; i++) {
+		if (i == PCXHR_CLOCK_TYPE_INTERNAL)
+			rate = mgr->sample_rate_real;
+		else {
+			err = pcxhr_get_external_clock(mgr, i, &rate);
+			if (err)
+				break;
+		}
+		ucontrol->value.integer.value[i] = rate;
+	}
+	up(&mgr->mixer_mutex);
+	return 0;
+}
+
+static struct snd_kcontrol_new pcxhr_control_clock_rate = {
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+	.iface =	SNDRV_CTL_ELEM_IFACE_CARD,
+	.name =		"Clock Rates",
+	.info =		pcxhr_clock_rate_info,
+	.get =		pcxhr_clock_rate_get,
+};
+
+/*
+ * IEC958 status bits
+ */
+static int pcxhr_iec958_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int pcxhr_iec958_capture_byte(struct snd_pcxhr *chip, int aes_idx, unsigned char* aes_bits)
+{
+	int i, err;
+	unsigned char temp;
+	struct pcxhr_rmh rmh;
+
+	pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_READ);
+	rmh.cmd[0] |= IO_NUM_UER_CHIP_REG;
+	switch (chip->chip_idx) {
+	case 0:	rmh.cmd[1] = CS8420_01_CS; break;	/* use CS8416_01_CS for AES SYNC plug */
+	case 1:	rmh.cmd[1] = CS8420_23_CS; break;
+	case 2:	rmh.cmd[1] = CS8420_45_CS; break;
+	case 3:	rmh.cmd[1] = CS8420_67_CS; break;
+	default: return -EINVAL;
+	}
+	switch (aes_idx) {
+	case 0:	rmh.cmd[2] = CS8420_CSB0; break;	/* use CS8416_CSBx for AES SYNC plug */
+	case 1:	rmh.cmd[2] = CS8420_CSB1; break;
+	case 2:	rmh.cmd[2] = CS8420_CSB2; break;
+	case 3:	rmh.cmd[2] = CS8420_CSB3; break;
+	case 4:	rmh.cmd[2] = CS8420_CSB4; break;
+	default: return -EINVAL;
+	}
+	rmh.cmd[1] &= 0x0fffff;			/* size and code the chip id for the fpga */
+	rmh.cmd[2] &= CHIP_SIG_AND_MAP_SPI;	/* chip signature + map for spi read */
+	rmh.cmd_len = 3;
+	err = pcxhr_send_msg(chip->mgr, &rmh);
+	if (err)
+		return err;
+	temp = 0;
+	for (i = 0; i < 8; i++) {
+		/* attention : reversed bit order (not with CS8416_01_CS) */
+		temp <<= 1;
+		if (rmh.stat[1] & (1 << i))
+			temp |= 1;
+	}
+	snd_printdd("read iec958 AES %d byte %d = 0x%x\n", chip->chip_idx, aes_idx, temp);
+	*aes_bits = temp;
+	return 0;
+}
+
+static int pcxhr_iec958_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	unsigned char aes_bits;
+	int i, err;
+
+	down(&chip->mgr->mixer_mutex);
+	for(i = 0; i < 5; i++) {
+		if (kcontrol->private_value == 0)	/* playback */
+			aes_bits = chip->aes_bits[i];
+		else {				/* capture */
+			err = pcxhr_iec958_capture_byte(chip, i, &aes_bits);
+			if (err)
+				break;
+		}
+		ucontrol->value.iec958.status[i] = aes_bits;
+	}
+	up(&chip->mgr->mixer_mutex);
+        return 0;
+}
+
+static int pcxhr_iec958_mask_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	int i;
+	for (i = 0; i < 5; i++)
+		ucontrol->value.iec958.status[i] = 0xff;
+        return 0;
+}
+
+static int pcxhr_iec958_update_byte(struct snd_pcxhr *chip, int aes_idx, unsigned char aes_bits)
+{
+	int i, err, cmd;
+	unsigned char new_bits = aes_bits;
+	unsigned char old_bits = chip->aes_bits[aes_idx];
+	struct pcxhr_rmh rmh;
+
+	for (i = 0; i < 8; i++) {
+		if ((old_bits & 0x01) != (new_bits & 0x01)) {
+			cmd = chip->chip_idx & 0x03;		/* chip index 0..3 */
+			if(chip->chip_idx > 3)
+				/* new bit used if chip_idx>3 (PCX1222HR) */
+				cmd |= 1 << 22;
+			cmd |= ((aes_idx << 3) + i) << 2;	/* add bit offset */
+			cmd |= (new_bits & 0x01) << 23;		/* add bit value */
+			pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
+			rmh.cmd[0] |= IO_NUM_REG_CUER;
+			rmh.cmd[1] = cmd;
+			rmh.cmd_len = 2;
+			snd_printdd("write iec958 AES %d byte %d bit %d (cmd %x)\n",
+				    chip->chip_idx, aes_idx, i, cmd);
+			err = pcxhr_send_msg(chip->mgr, &rmh);
+			if (err)
+				return err;
+		}
+		old_bits >>= 1;
+		new_bits >>= 1;
+	}
+	chip->aes_bits[aes_idx] = aes_bits;
+	return 0;
+}
+
+static int pcxhr_iec958_put(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
+	int i, changed = 0;
+
+	/* playback */
+	down(&chip->mgr->mixer_mutex);
+	for (i = 0; i < 5; i++) {
+		if (ucontrol->value.iec958.status[i] != chip->aes_bits[i]) {
+			pcxhr_iec958_update_byte(chip, i, ucontrol->value.iec958.status[i]);
+			changed = 1;
+		}
+	}
+	up(&chip->mgr->mixer_mutex);
+	return changed;
+}
+
+static struct snd_kcontrol_new pcxhr_control_playback_iec958_mask = {
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
+	.info =		pcxhr_iec958_info,
+	.get =		pcxhr_iec958_mask_get
+};
+static struct snd_kcontrol_new pcxhr_control_playback_iec958 = {
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
+	.info =         pcxhr_iec958_info,
+	.get =          pcxhr_iec958_get,
+	.put =          pcxhr_iec958_put,
+	.private_value = 0 /* playback */
+};
+
+static struct snd_kcontrol_new pcxhr_control_capture_iec958_mask = {
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =		SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
+	.info =		pcxhr_iec958_info,
+	.get =		pcxhr_iec958_mask_get
+};
+static struct snd_kcontrol_new pcxhr_control_capture_iec958 = {
+	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+	.name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
+	.info =         pcxhr_iec958_info,
+	.get =          pcxhr_iec958_get,
+	.private_value = 1 /* capture */
+};
+
+static void pcxhr_init_audio_levels(struct snd_pcxhr *chip)
+{
+	int i;
+
+	for (i = 0; i < 2; i++) {
+		if (chip->nb_streams_play) {
+			int j;
+			/* at boot time the digital volumes are unmuted 0dB */
+			for (j = 0; j < PCXHR_PLAYBACK_STREAMS; j++) {
+				chip->digital_playback_active[j][i] = 1;
+				chip->digital_playback_volume[j][i] = PCXHR_DIGITAL_ZERO_LEVEL;
+			}
+			/* after boot, only two bits are set on the uer interface */
+			chip->aes_bits[0] = IEC958_AES0_PROFESSIONAL | IEC958_AES0_PRO_FS_48000;
+/* only for test purpose, remove later */
+#ifdef CONFIG_SND_DEBUG
+			/* analog volumes for playback (is LEVEL_MIN after boot) */
+			chip->analog_playback_active[i] = 1;
+			chip->analog_playback_volume[i] = PCXHR_ANALOG_PLAYBACK_ZERO_LEVEL;
+			pcxhr_update_analog_audio_level(chip, 0, i);
+#endif
+/* test end */
+		}
+		if (chip->nb_streams_capt) {
+			/* at boot time the digital volumes are unmuted 0dB */
+			chip->digital_capture_volume[i] = PCXHR_DIGITAL_ZERO_LEVEL;
+/* only for test purpose, remove later */
+#ifdef CONFIG_SND_DEBUG
+			/* analog volumes for playback (is LEVEL_MIN after boot) */
+			chip->analog_capture_volume[i]  = PCXHR_ANALOG_CAPTURE_ZERO_LEVEL;
+			pcxhr_update_analog_audio_level(chip, 1, i);
+#endif
+/* test end */
+		}
+	}
+
+	return;
+}
+
+
+int pcxhr_create_mixer(struct pcxhr_mgr *mgr)
+{
+	struct snd_pcxhr *chip;
+	int err, i;
+
+	init_MUTEX(&mgr->mixer_mutex); /* can be in another place */
+
+	for (i = 0; i < mgr->num_cards; i++) {
+		struct snd_kcontrol_new temp;
+		chip = mgr->chip[i];
+
+		if (chip->nb_streams_play) {
+			/* analog output level control */
+			temp = pcxhr_control_analog_level;
+			temp.name = "Master Playback Volume";
+			temp.private_value = 0; /* playback */
+			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&temp, chip))) < 0)
+				return err;
+			/* output mute controls */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_output_switch,
+							    chip))) < 0)
+				return err;
+			
+			temp = snd_pcxhr_pcm_vol;
+			temp.name = "PCM Playback Volume";
+			temp.count = PCXHR_PLAYBACK_STREAMS;
+			temp.private_value = 0; /* playback */
+			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&temp, chip))) < 0)
+				return err;
+
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_pcm_switch,
+							    chip))) < 0)
+				return err;
+
+			/* IEC958 controls */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_playback_iec958_mask,
+							    chip))) < 0)
+				return err;
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_playback_iec958,
+							    chip))) < 0)
+				return err;
+		}
+		if (chip->nb_streams_capt) {
+			/* analog input level control only on first two chips !*/
+			temp = pcxhr_control_analog_level;
+			temp.name = "Master Capture Volume";
+			temp.private_value = 1; /* capture */
+			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&temp, chip))) < 0)
+				return err;
+
+			temp = snd_pcxhr_pcm_vol;
+			temp.name = "PCM Capture Volume";
+			temp.count = 1;
+			temp.private_value = 1; /* capture */
+			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&temp, chip))) < 0)
+				return err;
+			/* Audio source */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_audio_src,
+							    chip))) < 0)
+				return err;
+			/* IEC958 controls */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_capture_iec958_mask,
+							    chip))) < 0)
+				return err;
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_capture_iec958,
+							    chip))) < 0)
+				return err;
+		}
+		/* monitoring only if playback and capture device available */
+		if (chip->nb_streams_capt > 0 && chip->nb_streams_play > 0) {
+			/* monitoring */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_monitor_vol,
+							    chip))) < 0)
+				return err;
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_monitor_sw,
+							    chip))) < 0)
+				return err;
+		}
+
+		if (i == 0) {
+			/* clock mode only one control per pcxhr */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_clock_type,
+							    mgr))) < 0)
+				return err;
+			/* non standard control used to scan the external clock presence/frequencies */
+			if ((err = snd_ctl_add(chip->card,
+					       snd_ctl_new1(&pcxhr_control_clock_rate,
+							    mgr))) < 0)
+				return err;
+		}
+
+		/* init values for the mixer data */
+		pcxhr_init_audio_levels(chip);
+	}
+
+	return 0;
+}