ALSA: Add the driver for Digigram Lola PCI-e boards

Added a new driver for supporting Digigram Lola PCI-e boards.

Lola has a similar h/w design like HD-audio but with extended verbs.
Thus the driver is written similarly like HD-audio driver in the bus
part.  The codec part is rather written in a fixed way specific to the
Lola board because of the verb incompatibility.

The driver provides basic PCM, supporting multi-streams and mixing.

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

1 files changed, 826 insertions, 0 deletions

diff --git a/sound/pci/lola/lola_mixer.c b/sound/pci/lola/lola_mixer.c
new file mode 100644
index 000000000000..0d09689d7b8d
--- /dev/null
+++ b/sound/pci/lola/lola_mixer.c
@@ -0,0 +1,826 @@
+/*
+ *  Support for Digigram Lola PCI-e boards
+ *
+ *  Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
+ *
+ *  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 <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/io.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/tlv.h>
+#include "lola.h"
+
+static int __devinit lola_init_pin(struct lola *chip, struct lola_pin *pin,
+				   int dir, int nid)
+{
+	unsigned int val;
+	int err;
+
+	pin->nid = nid;
+	err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
+	if (err < 0) {
+		printk(KERN_ERR SFX "Can't read wcaps for 0x%x\n", nid);
+		return err;
+	}
+	val &= 0x00f00fff; /* test TYPE and bits 0..11 */
+	if (val == 0x00400200)    /* Type = 4, Digital = 1 */
+		pin->is_analog = false;
+	else if (val == 0x0040000a && dir == CAPT) /* Dig=0, InAmp/ovrd */
+		pin->is_analog = true;
+	else if (val == 0x0040000c && dir == PLAY) /* Dig=0, OutAmp/ovrd */
+		pin->is_analog = true;
+	else {
+		printk(KERN_ERR SFX "Invalid wcaps 0x%x for 0x%x\n", val, nid);
+		return -EINVAL;
+	}
+
+	/* analog parameters only following, so continue in case of Digital pin
+	 */
+	if (!pin->is_analog)
+		return 0;
+
+	if (dir == PLAY)
+		err = lola_read_param(chip, nid, LOLA_PAR_AMP_OUT_CAP, &val);
+	else
+		err = lola_read_param(chip, nid, LOLA_PAR_AMP_IN_CAP, &val);
+	if (err < 0) {
+		printk(KERN_ERR SFX "Can't read AMP-caps for 0x%x\n", nid);
+		return err;
+	}
+
+	pin->amp_mute = LOLA_AMP_MUTE_CAPABLE(val);
+	pin->amp_step_size = LOLA_AMP_STEP_SIZE(val);
+	pin->amp_num_steps = LOLA_AMP_NUM_STEPS(val);
+	if (pin->amp_num_steps) {
+		/* zero as mute state */
+		pin->amp_num_steps++;
+		pin->amp_step_size++;
+	}
+	pin->amp_offset = LOLA_AMP_OFFSET(val);
+
+	err = lola_codec_read(chip, nid, LOLA_VERB_GET_MAX_LEVEL, 0, 0, &val,
+			      NULL);
+	if (err < 0) {
+		printk(KERN_ERR SFX "Can't get MAX_LEVEL 0x%x\n", nid);
+		return err;
+	}
+	pin->max_level = val & 0x3ff;   /* 10 bits */
+
+	pin->config_default_reg = 0;
+	pin->fixed_gain_list_len = 0;
+	pin->cur_gain_step = 0;
+
+	return 0;
+}
+
+int __devinit lola_init_pins(struct lola *chip, int dir, int *nidp)
+{
+	int i, err, nid;
+	nid = *nidp;
+	for (i = 0; i < chip->pin[dir].num_pins; i++, nid++) {
+		err = lola_init_pin(chip, &chip->pin[dir].pins[i], dir, nid);
+		if (err < 0)
+			return err;
+	}
+	*nidp = nid;
+	return 0;
+}
+
+void lola_free_mixer(struct lola *chip)
+{
+	if (chip->mixer.array_saved)
+		vfree(chip->mixer.array_saved);
+}
+
+int __devinit lola_init_mixer_widget(struct lola *chip, int nid)
+{
+	unsigned int val;
+	int err;
+
+	err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
+	if (err < 0) {
+		printk(KERN_ERR SFX "Can't read wcaps for 0x%x\n", nid);
+		return err;
+	}
+
+	if ((val & 0xfff00000) != 0x02f00000) { /* test SubType and Type */
+		snd_printdd("No valid mixer widget\n");
+		return 0;
+	}
+
+	chip->mixer.nid = nid;
+	chip->mixer.caps = val;
+	chip->mixer.array = (struct lola_mixer_array __iomem *)
+		(chip->bar[BAR1].remap_addr + LOLA_BAR1_SOURCE_GAIN_ENABLE);
+
+	/* reserve memory to copy mixer data for sleep mode transitions */
+	chip->mixer.array_saved = vmalloc(sizeof(struct lola_mixer_array));
+
+	/* mixer matrix sources are physical input data and play streams */
+	chip->mixer.src_stream_outs = chip->pcm[PLAY].num_streams;
+	chip->mixer.src_phys_ins = chip->pin[CAPT].num_pins;
+
+	/* mixer matrix destinations are record streams and physical output */
+	chip->mixer.dest_stream_ins = chip->pcm[CAPT].num_streams;
+	chip->mixer.dest_phys_outs = chip->pin[PLAY].num_pins;
+
+	/* mixer matrix can have unused areas between PhysIn and
+	 * Play or Record and PhysOut zones
+	 */
+	chip->mixer.src_stream_out_ofs = chip->mixer.src_phys_ins +
+		LOLA_MIXER_SRC_INPUT_PLAY_SEPARATION(val);
+	chip->mixer.dest_phys_out_ofs = chip->mixer.dest_stream_ins +
+		LOLA_MIXER_DEST_REC_OUTPUT_SEPATATION(val);
+
+	/* example : MixerMatrix of LoLa881
+	 * 0-------8------16-------8------16
+	 * |       |       |       |       |
+	 * | INPUT |       | INPUT |       |
+	 * | ->    |unused | ->    |unused |
+	 * | RECORD|       | OUTPUT|       |
+	 * |       |       |       |       |
+	 * 8--------------------------------
+	 * |       |       |       |       |
+	 * |       |       |       |       |
+	 * |unused |unused |unused |unused |
+	 * |       |       |       |       |
+	 * |       |       |       |       |
+	 * 16-------------------------------
+	 * |       |       |       |       |
+	 * | PLAY  |       | PLAY  |       |
+	 * |  ->   |unused | ->    |unused |
+	 * | RECORD|       | OUTPUT|       |
+	 * |       |       |       |       |
+	 * 8--------------------------------
+	 * |       |       |       |       |
+	 * |       |       |       |       |
+	 * |unused |unused |unused |unused |
+	 * |       |       |       |       |
+	 * |       |       |       |       |
+	 * 16-------------------------------
+	 */
+	if (chip->mixer.src_stream_out_ofs > MAX_AUDIO_INOUT_COUNT ||
+	    chip->mixer.dest_phys_out_ofs > MAX_STREAM_IN_COUNT) {
+		printk(KERN_ERR SFX "Invalid mixer widget size\n");
+		return -EINVAL;
+	}
+
+	chip->mixer.src_mask = ((1U << chip->mixer.src_phys_ins) - 1) |
+		(((1U << chip->mixer.src_stream_outs) - 1)
+		 << chip->mixer.src_stream_out_ofs);
+	chip->mixer.dest_mask = ((1U << chip->mixer.dest_stream_ins) - 1) |
+		(((1U << chip->mixer.dest_phys_outs) - 1)
+		 << chip->mixer.dest_phys_out_ofs);
+
+	return 0;
+}
+
+static int lola_mixer_set_src_gain(struct lola *chip, unsigned int id,
+				   unsigned short gain, bool on)
+{
+	unsigned int oldval, val;
+
+	if (!(chip->mixer.src_mask & (1 << id)))
+		return -EINVAL;
+	writew(gain, &chip->mixer.array->src_gain[id]);
+	oldval = val = readl(&chip->mixer.array->src_gain_enable);
+	if (on)
+		val |= (1 << id);
+	else
+		val &= ~(1 << id);
+	writel(val, &chip->mixer.array->src_gain_enable);
+	lola_codec_flush(chip);
+	/* inform micro-controller about the new source gain */
+	return lola_codec_write(chip, chip->mixer.nid,
+				LOLA_VERB_SET_SOURCE_GAIN, id, 0);
+}
+
+#if 0 /* not used */
+static int lola_mixer_set_src_gains(struct lola *chip, unsigned int mask,
+				    unsigned short *gains)
+{
+	int i;
+
+	if ((chip->mixer.src_mask & mask) != mask)
+		return -EINVAL;
+	for (i = 0; i < LOLA_MIXER_DIM; i++) {
+		if (mask & (1 << i)) {
+			writew(*gains, &chip->mixer.array->src_gain[i]);
+			gains++;
+		}
+	}
+	writel(mask, &chip->mixer.array->src_gain_enable);
+	lola_codec_flush(chip);
+	if (chip->mixer.caps & LOLA_PEAK_METER_CAN_AGC_MASK) {
+		/* update for all srcs at once */
+		return lola_codec_write(chip, chip->mixer.nid,
+					LOLA_VERB_SET_SOURCE_GAIN, 0x80, 0);
+	}
+	/* update manually */
+	for (i = 0; i < LOLA_MIXER_DIM; i++) {
+		if (mask & (1 << i)) {
+			lola_codec_write(chip, chip->mixer.nid,
+					 LOLA_VERB_SET_SOURCE_GAIN, i, 0);
+		}
+	}
+	return 0;
+}
+#endif /* not used */
+
+static int lola_mixer_set_mapping_gain(struct lola *chip,
+				       unsigned int src, unsigned int dest,
+				       unsigned short gain, bool on)
+{
+	unsigned int val;
+
+	if (!(chip->mixer.src_mask & (1 << src)) ||
+	    !(chip->mixer.dest_mask & (1 << dest)))
+		return -EINVAL;
+	if (on)
+		writew(gain, &chip->mixer.array->dest_mix_gain[dest][src]);
+	val = readl(&chip->mixer.array->dest_mix_gain_enable[dest]);
+	if (on)
+		val |= (1 << src);
+	else
+		val &= ~(1 << src);
+	writel(val, &chip->mixer.array->dest_mix_gain_enable[dest]);
+	lola_codec_flush(chip);
+	return lola_codec_write(chip, chip->mixer.nid, LOLA_VERB_SET_MIX_GAIN,
+				src, dest);
+}
+
+static int lola_mixer_set_dest_gains(struct lola *chip, unsigned int id,
+				     unsigned int mask, unsigned short *gains)
+{
+	int i;
+
+	if (!(chip->mixer.dest_mask & (1 << id)) ||
+	    (chip->mixer.src_mask & mask) != mask)
+		return -EINVAL;
+	for (i = 0; i < LOLA_MIXER_DIM; i++) {
+		if (mask & (1 << i)) {
+			writew(*gains, &chip->mixer.array->dest_mix_gain[id][i]);
+			gains++;
+		}
+	}
+	writel(mask, &chip->mixer.array->dest_mix_gain_enable[id]);
+	lola_codec_flush(chip);
+	/* update for all dests at once */
+	return lola_codec_write(chip, chip->mixer.nid,
+				LOLA_VERB_SET_DESTINATION_GAIN, id, 0);
+}
+
+/*
+ */
+
+static int set_analog_volume(struct lola *chip, int dir,
+			     unsigned int idx, unsigned int val,
+			     bool external_call);
+
+int lola_setup_all_analog_gains(struct lola *chip, int dir, bool mute)
+{
+	struct lola_pin *pin;
+	int idx, max_idx;
+
+	pin = chip->pin[dir].pins;
+	max_idx = chip->pin[dir].num_pins;
+	for (idx = 0; idx < max_idx; idx++) {
+		if (pin[idx].is_analog) {
+			unsigned int val = mute ? 0 : pin[idx].cur_gain_step;
+			/* set volume and do not save the value */
+			set_analog_volume(chip, dir, idx, val, false);
+		}
+	}
+	return lola_codec_flush(chip);
+}
+
+void lola_save_mixer(struct lola *chip)
+{
+	/* mute analog output */
+	if (chip->mixer.array_saved) {
+		/* store contents of mixer array */
+		memcpy_fromio(chip->mixer.array_saved, chip->mixer.array,
+			      sizeof(*chip->mixer.array));
+	}
+	lola_setup_all_analog_gains(chip, PLAY, true); /* output mute */
+}
+
+void lola_restore_mixer(struct lola *chip)
+{
+	int i;
+
+	/*lola_reset_setups(chip);*/
+	if (chip->mixer.array_saved) {
+		/* restore contents of mixer array */
+		memcpy_toio(chip->mixer.array, chip->mixer.array_saved,
+			    sizeof(*chip->mixer.array));
+		/* inform micro-controller about all restored values
+		 * and ignore return values
+		 */
+		for (i = 0; i < chip->mixer.src_phys_ins; i++)
+			lola_codec_write(chip, chip->mixer.nid,
+					 LOLA_VERB_SET_SOURCE_GAIN,
+					 i, 0);
+		for (i = 0; i < chip->mixer.src_stream_outs; i++)
+			lola_codec_write(chip, chip->mixer.nid,
+					 LOLA_VERB_SET_SOURCE_GAIN,
+					 chip->mixer.src_stream_out_ofs + i, 0);
+		for (i = 0; i < chip->mixer.dest_stream_ins; i++)
+			lola_codec_write(chip, chip->mixer.nid,
+					 LOLA_VERB_SET_DESTINATION_GAIN,
+					 i, 0);
+		for (i = 0; i < chip->mixer.dest_phys_outs; i++)
+			lola_codec_write(chip, chip->mixer.nid,
+					 LOLA_VERB_SET_DESTINATION_GAIN,
+					 chip->mixer.dest_phys_out_ofs + i, 0);
+		lola_codec_flush(chip);
+	}
+}
+
+/*
+ */
+
+static int set_analog_volume(struct lola *chip, int dir,
+			     unsigned int idx, unsigned int val,
+			     bool external_call)
+{
+	struct lola_pin *pin;
+	int err;
+
+	if (idx >= chip->pin[dir].num_pins)
+		return -EINVAL;
+	pin = &chip->pin[dir].pins[idx];
+	if (!pin->is_analog || pin->amp_num_steps <= val)
+		return -EINVAL;
+	if (external_call && pin->cur_gain_step == val)
+		return 0;
+	if (external_call)
+		lola_codec_flush(chip);
+	err = lola_codec_write(chip, pin->nid,
+			       LOLA_VERB_SET_AMP_GAIN_MUTE, val, 0);
+	if (err < 0)
+		return err;
+	if (external_call)
+		pin->cur_gain_step = val;
+	return 0;
+}
+
+int lola_set_src_config(struct lola *chip, unsigned int src_mask, bool update)
+{
+	int ret = 0;
+	int success = 0;
+	int n, err;
+
+	/* SRC can be activated and the dwInputSRCMask is valid? */
+	if ((chip->input_src_caps_mask & src_mask) != src_mask)
+		return -EINVAL;
+	/* handle all even Inputs - SRC is a stereo setting !!! */
+	for (n = 0; n < chip->pin[CAPT].num_pins; n += 2) {
+		unsigned int mask = 3U << n; /* handle the stereo case */
+		unsigned int new_src, src_state;
+		if (!(chip->input_src_caps_mask & mask))
+			continue;
+		/* if one IO needs SRC, both stereo IO will get SRC */
+		new_src = (src_mask & mask) != 0;
+		if (update) {
+			src_state = (chip->input_src_mask & mask) != 0;
+			if (src_state == new_src)
+				continue;   /* nothing to change for this IO */
+		}
+		err = lola_codec_write(chip, chip->pcm[CAPT].streams[n].nid,
+				       LOLA_VERB_SET_SRC, new_src, 0);
+		if (!err)
+			success++;
+		else
+			ret = err;
+	}
+	if (success)
+		ret = lola_codec_flush(chip);
+	if (!ret)
+		chip->input_src_mask = src_mask;
+	return ret;
+}
+
+/*
+ */
+static int init_mixer_values(struct lola *chip)
+{
+	int i;
+
+	/* all src on */
+	lola_set_src_config(chip, (1 << chip->pin[CAPT].num_pins) - 1, false);
+
+	/* clear all matrix */
+	memset_io(chip->mixer.array, 0, sizeof(*chip->mixer.array));
+	/* set src gain to 0dB */
+	for (i = 0; i < chip->mixer.src_phys_ins; i++)
+		lola_mixer_set_src_gain(chip, i, 336, true); /* 0dB */
+	for (i = 0; i < chip->mixer.src_stream_outs; i++)
+		lola_mixer_set_src_gain(chip,
+					i + chip->mixer.src_stream_out_ofs,
+					336, true); /* 0dB */
+	/* set 1:1 dest gain */
+	for (i = 0; i < chip->mixer.dest_stream_ins; i++) {
+		int src = i % chip->mixer.src_phys_ins;
+		lola_mixer_set_mapping_gain(chip, src, i, 336, true);
+	}
+	for (i = 0; i < chip->mixer.src_stream_outs; i++) {
+		int src = chip->mixer.src_stream_out_ofs + i;
+		int dst = chip->mixer.dest_phys_out_ofs +
+			i % chip->mixer.dest_phys_outs;
+		lola_mixer_set_mapping_gain(chip, src, dst, 336, true);
+	}
+	return 0;
+}
+
+/*
+ * analog mixer control element
+ */
+static int lola_analog_vol_info(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_info *uinfo)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	int dir = kcontrol->private_value;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = chip->pin[dir].num_pins;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = chip->pin[dir].pins[0].amp_num_steps;
+	return 0;
+}
+
+static int lola_analog_vol_get(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	int dir = kcontrol->private_value;
+	int i;
+
+	for (i = 0; i < chip->pin[dir].num_pins; i++)
+		ucontrol->value.integer.value[i] =
+			chip->pin[dir].pins[i].cur_gain_step;
+	return 0;
+}
+
+static int lola_analog_vol_put(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	int dir = kcontrol->private_value;
+	int i, err;
+
+	for (i = 0; i < chip->pin[dir].num_pins; i++) {
+		err = set_analog_volume(chip, dir, i,
+					ucontrol->value.integer.value[i],
+					true);
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
+static int lola_analog_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
+			       unsigned int size, unsigned int __user *tlv)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	int dir = kcontrol->private_value;
+	unsigned int val1, val2;
+	struct lola_pin *pin;
+
+	if (size < 4 * sizeof(unsigned int))
+		return -ENOMEM;
+	pin = &chip->pin[dir].pins[0];
+
+	val2 = pin->amp_step_size * 25;
+	val1 = -1 * (int)pin->amp_offset * (int)val2;
+#ifdef TLV_DB_SCALE_MUTE
+	val2 |= TLV_DB_SCALE_MUTE;
+#endif
+	if (put_user(SNDRV_CTL_TLVT_DB_SCALE, tlv))
+		return -EFAULT;
+	if (put_user(2 * sizeof(unsigned int), tlv + 1))
+		return -EFAULT;
+	if (put_user(val1, tlv + 2))
+		return -EFAULT;
+	if (put_user(val2, tlv + 3))
+		return -EFAULT;
+	return 0;
+}
+
+static struct snd_kcontrol_new lola_analog_mixer __devinitdata = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
+		   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+		   SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK),
+	.info = lola_analog_vol_info,
+	.get = lola_analog_vol_get,
+	.put = lola_analog_vol_put,
+	.tlv.c = lola_analog_vol_tlv,
+};
+
+static int __devinit create_analog_mixer(struct lola *chip, int dir, char *name)
+{
+	if (!chip->pin[dir].num_pins)
+		return 0;
+	lola_analog_mixer.name = name;
+	lola_analog_mixer.private_value = dir;
+	return snd_ctl_add(chip->card,
+			   snd_ctl_new1(&lola_analog_mixer, chip));
+}
+
+/*
+ */
+static int lola_input_src_info(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_info *uinfo)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = chip->pin[CAPT].num_pins;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int lola_input_src_get(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	int i;
+
+	for (i = 0; i < chip->pin[CAPT].num_pins; i++)
+		ucontrol->value.integer.value[i] =
+			!!(chip->input_src_mask & (1 << i));
+	return 0;
+}
+
+static int lola_input_src_put(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	int i;
+	unsigned int mask;
+
+	mask = 0;
+	for (i = 0; i < chip->pin[CAPT].num_pins; i++)
+		if (ucontrol->value.integer.value[i])
+			mask |= 1 << i;
+	return lola_set_src_config(chip, mask, true);
+}
+
+static struct snd_kcontrol_new lola_input_src_mixer __devinitdata = {
+	.name = "Analog Capture Switch",
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.info = lola_input_src_info,
+	.get = lola_input_src_get,
+	.put = lola_input_src_put,
+};
+
+static int __devinit create_input_src_mixer(struct lola *chip)
+{
+	return snd_ctl_add(chip->card,
+			   snd_ctl_new1(&lola_input_src_mixer, chip));
+}
+
+/*
+ * src gain mixer
+ */
+static int lola_src_gain_info(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_info *uinfo)
+{
+	unsigned int count = (kcontrol->private_value >> 8) & 0xff;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = count;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 409;
+	return 0;
+}
+
+static int lola_src_gain_get(struct snd_kcontrol *kcontrol,
+			     struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int ofs = kcontrol->private_value & 0xff;
+	unsigned int count = (kcontrol->private_value >> 8) & 0xff;
+	unsigned int mask, i;
+
+	mask = readl(&chip->mixer.array->src_gain_enable);
+	for (i = 0; i < count; i++) {
+		unsigned int idx = ofs + i;
+		unsigned short val;
+		if (!(chip->mixer.src_mask & (1 << idx)))
+			return -EINVAL;
+		if (mask & (1 << idx))
+			val = readw(&chip->mixer.array->src_gain[idx]) + 1;
+		else
+			val = 0;
+		ucontrol->value.integer.value[i] = val;
+	}
+	return 0;
+}
+
+static int lola_src_gain_put(struct snd_kcontrol *kcontrol,
+			     struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int ofs = kcontrol->private_value & 0xff;
+	unsigned int count = (kcontrol->private_value >> 8) & 0xff;
+	int i, err;
+
+	for (i = 0; i < count; i++) {
+		unsigned int idx = ofs + i;
+		unsigned short val = ucontrol->value.integer.value[i];
+		if (val)
+			val--;
+		err = lola_mixer_set_src_gain(chip, idx, val, !!val);
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
+/* raw value: 0 = -84dB, 336 = 0dB, 408=18dB, incremented 1 for mute */
+static const DECLARE_TLV_DB_SCALE(lola_src_gain_tlv, -8425, 25, 1);
+
+static struct snd_kcontrol_new lola_src_gain_mixer __devinitdata = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
+		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
+	.info = lola_src_gain_info,
+	.get = lola_src_gain_get,
+	.put = lola_src_gain_put,
+	.tlv.p = lola_src_gain_tlv,
+};
+
+static int __devinit create_src_gain_mixer(struct lola *chip,
+					   int num, int ofs, char *name)
+{
+	lola_src_gain_mixer.name = name;
+	lola_src_gain_mixer.private_value = ofs + (num << 8);
+	return snd_ctl_add(chip->card,
+			   snd_ctl_new1(&lola_src_gain_mixer, chip));
+}
+
+/*
+ * destination gain (matrix-like) mixer
+ */
+static int lola_dest_gain_info(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_info *uinfo)
+{
+	unsigned int src_num = (kcontrol->private_value >> 8) & 0xff;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = src_num;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 433;
+	return 0;
+}
+
+static int lola_dest_gain_get(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int src_ofs = kcontrol->private_value & 0xff;
+	unsigned int src_num = (kcontrol->private_value >> 8) & 0xff;
+	unsigned int dst_ofs = (kcontrol->private_value >> 16) & 0xff;
+	unsigned int dst, mask, i;
+
+	dst = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + dst_ofs;
+	mask = readl(&chip->mixer.array->dest_mix_gain_enable[dst]);
+	for (i = 0; i < src_num; i++) {
+		unsigned int src = src_ofs + i;
+		unsigned short val;
+		if (!(chip->mixer.src_mask & (1 << src)))
+			return -EINVAL;
+		if (mask & (1 << dst))
+			val = readw(&chip->mixer.array->dest_mix_gain[dst][src]) + 1;
+		else
+			val = 0;
+		ucontrol->value.integer.value[i] = val;
+	}
+	return 0;
+}
+
+static int lola_dest_gain_put(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct lola *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int src_ofs = kcontrol->private_value & 0xff;
+	unsigned int src_num = (kcontrol->private_value >> 8) & 0xff;
+	unsigned int dst_ofs = (kcontrol->private_value >> 16) & 0xff;
+	unsigned int dst, mask;
+	unsigned short gains[MAX_STREAM_COUNT];
+	int i, num;
+
+	mask = 0;
+	num = 0;
+	for (i = 0; i < src_num; i++) {
+		unsigned short val = ucontrol->value.integer.value[i];
+		if (val) {
+			gains[num++] = val - 1;
+			mask |= 1 << i;
+		}
+	}
+	mask <<= src_ofs;
+	dst = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + dst_ofs;
+	return lola_mixer_set_dest_gains(chip, dst, mask, gains);
+}
+
+static const DECLARE_TLV_DB_SCALE(lola_dest_gain_tlv, -8425, 25, 1);
+
+static struct snd_kcontrol_new lola_dest_gain_mixer __devinitdata = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
+		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
+	.info = lola_dest_gain_info,
+	.get = lola_dest_gain_get,
+	.put = lola_dest_gain_put,
+	.tlv.p = lola_dest_gain_tlv,
+};
+
+static int __devinit create_dest_gain_mixer(struct lola *chip,
+					    int src_num, int src_ofs,
+					    int num, int ofs, char *name)
+{
+	lola_dest_gain_mixer.count = num;
+	lola_dest_gain_mixer.name = name;
+	lola_dest_gain_mixer.private_value =
+		src_ofs + (src_num << 8) + (ofs << 16) + (num << 24);
+	return snd_ctl_add(chip->card,
+			  snd_ctl_new1(&lola_dest_gain_mixer, chip));
+}
+
+/*
+ */
+int __devinit lola_create_mixer(struct lola *chip)
+{
+	int err;
+
+	err = create_analog_mixer(chip, PLAY, "Analog Playback Volume");
+	if (err < 0)
+		return err;
+	err = create_analog_mixer(chip, CAPT, "Analog Capture Volume");
+	if (err < 0)
+		return err;
+	err = create_input_src_mixer(chip);
+	if (err < 0)
+		return err;
+	err = create_src_gain_mixer(chip, chip->mixer.src_phys_ins, 0,
+				    "Line Source Gain Volume");
+	if (err < 0)
+		return err;
+	err = create_src_gain_mixer(chip, chip->mixer.src_stream_outs,
+				    chip->mixer.src_stream_out_ofs,
+				    "Stream Source Gain Volume");
+	if (err < 0)
+		return err;
+	err = create_dest_gain_mixer(chip,
+				     chip->mixer.src_phys_ins, 0,
+				     chip->mixer.dest_stream_ins, 0,
+				     "Line Capture Volume");
+	if (err < 0)
+		return err;
+	err = create_dest_gain_mixer(chip,
+				     chip->mixer.src_stream_outs,
+				     chip->mixer.src_stream_out_ofs,
+				     chip->mixer.dest_stream_ins, 0,
+				     "Stream-Loopback Capture Volume");
+	if (err < 0)
+		return err;
+	err = create_dest_gain_mixer(chip,
+				     chip->mixer.src_phys_ins, 0,
+				     chip->mixer.dest_phys_outs,
+				     chip->mixer.dest_phys_out_ofs,
+				     "Line-Loopback Playback Volume");
+	if (err < 0)
+		return err;
+	err = create_dest_gain_mixer(chip,
+				     chip->mixer.src_stream_outs,
+				     chip->mixer.src_stream_out_ofs,
+				     chip->mixer.dest_phys_outs,
+				     chip->mixer.dest_phys_out_ofs,
+				     "Stream Playback Volume");
+	if (err < 0)
+		return err;
+
+	return init_mixer_values(chip);
+}