--- /dev/null
+/*
+ * Tascam US-16x08 ALSA driver
+ *
+ * Copyright (c) 2016 by Detlef Urban (onkel@paraair.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.
+ *
+ */
+
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/usb/audio-v2.h>
+
+#include <sound/core.h>
+#include <sound/control.h>
+
+#include "usbaudio.h"
+#include "mixer.h"
+#include "helper.h"
+
+#include "mixer_us16x08.h"
+
+/* USB control message templates */
+static const char route_msg[] = {
+ 0x61,
+ 0x02,
+ 0x03, /* input from master (0x02) or input from computer bus (0x03) */
+ 0x62,
+ 0x02,
+ 0x01, /* input index (0x01/0x02 eq. left/right) or bus (0x01-0x08) */
+ 0x41,
+ 0x01,
+ 0x61,
+ 0x02,
+ 0x01,
+ 0x62,
+ 0x02,
+ 0x01, /* output index (0x01-0x08) */
+ 0x42,
+ 0x01,
+ 0x43,
+ 0x01,
+ 0x00,
+ 0x00
+};
+
+static const char mix_init_msg1[] = {
+ 0x71, 0x01, 0x00, 0x00
+};
+
+static const char mix_init_msg2[] = {
+ 0x62, 0x02, 0x00, 0x61, 0x02, 0x04, 0xb1, 0x01, 0x00, 0x00
+};
+
+static const char mix_msg_in[] = {
+ /* default message head, equal to all mixers */
+ 0x61, 0x02, 0x04, 0x62, 0x02, 0x01,
+ 0x81, /* 0x06: Controller ID */
+ 0x02, /* 0x07: */
+ 0x00, /* 0x08: Value of common mixer */
+ 0x00,
+ 0x00
+};
+
+static const char mix_msg_out[] = {
+ /* default message head, equal to all mixers */
+ 0x61, 0x02, 0x02, 0x62, 0x02, 0x01,
+ 0x81, /* 0x06: Controller ID */
+ 0x02, /* 0x07: */
+ 0x00, /* 0x08: Value of common mixer */
+ 0x00,
+ 0x00
+};
+
+static const char bypass_msg_out[] = {
+ 0x45,
+ 0x02,
+ 0x01, /* on/off flag */
+ 0x00,
+ 0x00
+};
+
+static const char bus_msg_out[] = {
+ 0x44,
+ 0x02,
+ 0x01, /* on/off flag */
+ 0x00,
+ 0x00
+};
+
+static const char comp_msg[] = {
+ /* default message head, equal to all mixers */
+ 0x61, 0x02, 0x04, 0x62, 0x02, 0x01,
+ 0x91,
+ 0x02,
+ 0xf0, /* 0x08: Threshold db (8) (e0 ... 00) (+-0dB -- -32dB) x-32 */
+ 0x92,
+ 0x02,
+ 0x0a, /* 0x0b: Ratio (0a,0b,0d,0f,11,14,19,1e,23,28,32,3c,50,a0,ff) */
+ 0x93,
+ 0x02,
+ 0x02, /* 0x0e: Attack (0x02 ... 0xc0) (2ms ... 200ms) */
+ 0x94,
+ 0x02,
+ 0x01, /* 0x11: Release (0x01 ... 0x64) (10ms ... 1000ms) x*10 */
+ 0x95,
+ 0x02,
+ 0x03, /* 0x14: gain (0 ... 20) (0dB .. 20dB) */
+ 0x96,
+ 0x02,
+ 0x01,
+ 0x97,
+ 0x02,
+ 0x01, /* 0x1a: main Comp switch (0 ... 1) (off ... on)) */
+ 0x00,
+ 0x00
+};
+
+static const char eqs_msq[] = {
+ /* default message head, equal to all mixers */
+ 0x61, 0x02, 0x04, 0x62, 0x02, 0x01,
+ 0x51, /* 0x06: Controller ID */
+ 0x02,
+ 0x04, /* 0x08: EQ set num (0x01..0x04) (LOW, LOWMID, HIGHMID, HIGH)) */
+ 0x52,
+ 0x02,
+ 0x0c, /* 0x0b: value dB (0 ... 12) (-12db .. +12db) x-6 */
+ 0x53,
+ 0x02,
+ 0x0f, /* 0x0e: value freq (32-47) (1.7kHz..18kHz) */
+ 0x54,
+ 0x02,
+ 0x02, /* 0x11: band width (0-6) (Q16-Q0.25) 2^x/4 (EQ xxMID only) */
+ 0x55,
+ 0x02,
+ 0x01, /* 0x14: main EQ switch (0 ... 1) (off ... on)) */
+ 0x00,
+ 0x00
+};
+
+/* compressor ratio map */
+static const char ratio_map[] = {
+ 0x0a, 0x0b, 0x0d, 0x0f, 0x11, 0x14, 0x19, 0x1e,
+ 0x23, 0x28, 0x32, 0x3c, 0x50, 0xa0, 0xff
+};
+
+/* route enumeration names */
+const const char *route_names[] = {
+ "Master Left", "Master Right", "Output 1", "Output 2", "Output 3",
+ "Output 4", "Output 5", "Output 6", "Output 7", "Output 8",
+};
+
+static int snd_us16x08_recv_urb(struct snd_usb_audio *chip,
+ unsigned char *buf, int size)
+{
+
+ mutex_lock(&chip->mutex);
+ snd_usb_ctl_msg(chip->dev,
+ usb_rcvctrlpipe(chip->dev, 0),
+ SND_US16X08_URB_METER_REQUEST,
+ SND_US16X08_URB_METER_REQUESTTYPE, 0, 0, buf, size);
+ mutex_unlock(&chip->mutex);
+ return 0;
+}
+
+/* wrapper function to send prepared URB buffer to usb device. Return an error
+ * code if something went wrong
+ */
+static int snd_us16x08_send_urb(struct snd_usb_audio *chip, char *buf, int size)
+{
+ int err = 0;
+
+ if (chip) {
+ err = snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
+ SND_US16X08_URB_REQUEST, SND_US16X08_URB_REQUESTTYPE,
+ 0, 0, buf, size);
+ }
+
+ return err;
+}
+
+static int snd_us16x08_route_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ return snd_ctl_enum_info(uinfo, 1, 10, route_names);
+}
+
+static int snd_us16x08_route_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ int index = ucontrol->id.index;
+
+ /* route has no bias */
+ ucontrol->value.enumerated.item[0] = elem->cache_val[index];
+
+ return 0;
+}
+
+static int snd_us16x08_route_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ int index = ucontrol->id.index;
+ char buf[sizeof(route_msg)];
+ int val, val_org, err = 0;
+
+ /* prepare the message buffer from template */
+ memcpy(buf, route_msg, sizeof(route_msg));
+
+ /* get the new value (no bias for routes) */
+ val = ucontrol->value.enumerated.item[0];
+
+ /* sanity check */
+ if (val < 0 || val > 9)
+ return -EINVAL;
+
+ if (val < 2) {
+ /* input comes from a master channel */
+ val_org = val;
+ buf[2] = 0x02;
+ } else {
+ /* input comes from a computer channel */
+ buf[2] = 0x03;
+ val_org = val - 2;
+ }
+
+ /* place new route selection in URB message */
+ buf[5] = (unsigned char) (val_org & 0x0f) + 1;
+ /* place route selector in URB message */
+ buf[13] = index + 1;
+
+ err = snd_us16x08_send_urb(chip, buf, sizeof(route_msg));
+
+ if (err > 0) {
+ elem->cached |= 1 << index;
+ elem->cache_val[index] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set routing, err:%d\n", err);
+ }
+
+ return err > 0 ? 1 : 0;
+}
+
+static int snd_us16x08_master_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->count = 1;
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->value.integer.max = SND_US16X08_KCMAX(kcontrol);
+ uinfo->value.integer.min = SND_US16X08_KCMIN(kcontrol);
+ uinfo->value.integer.step = SND_US16X08_KCSTEP(kcontrol);
+ return 0;
+}
+
+static int snd_us16x08_master_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ int index = ucontrol->id.index;
+
+ ucontrol->value.integer.value[0] = elem->cache_val[index];
+
+ return 0;
+}
+
+static int snd_us16x08_master_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ char buf[sizeof(mix_msg_out)];
+ int val, err = 0;
+ int index = ucontrol->id.index;
+
+ /* prepare the message buffer from template */
+ memcpy(buf, mix_msg_out, sizeof(mix_msg_out));
+
+ /* new control value incl. bias*/
+ val = ucontrol->value.integer.value[0];
+
+ /* sanity check */
+ if (val < SND_US16X08_KCMIN(kcontrol)
+ || val > SND_US16X08_KCMAX(kcontrol))
+ return -EINVAL;
+
+ buf[8] = val - SND_US16X08_KCBIAS(kcontrol);
+ buf[6] = elem->head.id;
+
+ /* place channel selector in URB message */
+ buf[5] = index + 1;
+ err = snd_us16x08_send_urb(chip, buf, sizeof(mix_msg_out));
+
+ if (err > 0) {
+ elem->cached |= 1 << index;
+ elem->cache_val[index] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set master, err:%d\n", err);
+ }
+
+ return err > 0 ? 1 : 0;
+}
+
+static int snd_us16x08_bus_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ char buf[sizeof(mix_msg_out)];
+ int val, err = 0;
+
+ val = ucontrol->value.integer.value[0];
+
+ /* prepare the message buffer from template */
+ switch (elem->head.id) {
+ case SND_US16X08_ID_BYPASS:
+ memcpy(buf, bypass_msg_out, sizeof(bypass_msg_out));
+ buf[2] = val;
+ err = snd_us16x08_send_urb(chip, buf, sizeof(bypass_msg_out));
+ break;
+ case SND_US16X08_ID_BUSS_OUT:
+ memcpy(buf, bus_msg_out, sizeof(bus_msg_out));
+ buf[2] = val;
+ err = snd_us16x08_send_urb(chip, buf, sizeof(bus_msg_out));
+ break;
+ case SND_US16X08_ID_MUTE:
+ memcpy(buf, mix_msg_out, sizeof(mix_msg_out));
+ buf[8] = val;
+ buf[6] = elem->head.id;
+ buf[5] = 1;
+ err = snd_us16x08_send_urb(chip, buf, sizeof(mix_msg_out));
+ break;
+ }
+
+ if (err > 0) {
+ elem->cached |= 1;
+ elem->cache_val[0] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set buss param, err:%d\n", err);
+ }
+
+ return err > 0 ? 1 : 0;
+}
+
+static int snd_us16x08_bus_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+
+ switch (elem->head.id) {
+ case SND_US16X08_ID_BUSS_OUT:
+ ucontrol->value.integer.value[0] = elem->cache_val[0];
+ break;
+ case SND_US16X08_ID_BYPASS:
+ ucontrol->value.integer.value[0] = elem->cache_val[0];
+ break;
+ case SND_US16X08_ID_MUTE:
+ ucontrol->value.integer.value[0] = elem->cache_val[0];
+ break;
+ }
+
+ return 0;
+}
+
+/* gets a current mixer value from common store */
+static int snd_us16x08_channel_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ int index = ucontrol->id.index;
+
+ ucontrol->value.integer.value[0] = elem->cache_val[index];
+
+ return 0;
+}
+
+static int snd_us16x08_channel_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ char buf[sizeof(mix_msg_in)];
+ int val, err;
+ int index = ucontrol->id.index;
+
+ /* prepare URB message from template */
+ memcpy(buf, mix_msg_in, sizeof(mix_msg_in));
+
+ val = ucontrol->value.integer.value[0];
+
+ /* sanity check */
+ if (val < SND_US16X08_KCMIN(kcontrol)
+ || val > SND_US16X08_KCMAX(kcontrol))
+ return -EINVAL;
+
+ /* add the bias to the new value */
+ buf[8] = val - SND_US16X08_KCBIAS(kcontrol);
+ buf[6] = elem->head.id;
+ buf[5] = index + 1;
+
+ err = snd_us16x08_send_urb(chip, buf, sizeof(mix_msg_in));
+
+ if (err > 0) {
+ elem->cached |= 1 << index;
+ elem->cache_val[index] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set channel, err:%d\n", err);
+ }
+
+ return err > 0 ? 1 : 0;
+}
+
+static int snd_us16x08_mix_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->count = 1;
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->value.integer.max = SND_US16X08_KCMAX(kcontrol);
+ uinfo->value.integer.min = SND_US16X08_KCMIN(kcontrol);
+ uinfo->value.integer.step = SND_US16X08_KCSTEP(kcontrol);
+ return 0;
+}
+
+static int snd_us16x08_comp_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_us16x08_comp_store *store =
+ ((struct snd_us16x08_comp_store *) elem->private_data);
+ int index = ucontrol->id.index;
+ int val_idx = COMP_STORE_IDX(elem->head.id);
+
+ ucontrol->value.integer.value[0] = store->val[val_idx][index];
+
+ return 0;
+}
+
+static int snd_us16x08_comp_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ struct snd_us16x08_comp_store *store =
+ ((struct snd_us16x08_comp_store *) elem->private_data);
+ int index = ucontrol->id.index;
+ char buf[sizeof(comp_msg)];
+ int val_idx, val;
+ int err = 0;
+
+ /* prepare compressor URB message from template */
+ memcpy(buf, comp_msg, sizeof(comp_msg));
+
+ /* new control value incl. bias*/
+ val_idx = elem->head.id - SND_US16X08_ID_COMP_BASE;
+
+ val = ucontrol->value.integer.value[0];
+
+ /* sanity check */
+ if (val < SND_US16X08_KCMIN(kcontrol)
+ || val > SND_US16X08_KCMAX(kcontrol))
+ return -EINVAL;
+
+ store->val[val_idx][index] = ucontrol->value.integer.value[0];
+
+ /* place comp values in message buffer watch bias! */
+ buf[8] = store->val[
+ COMP_STORE_IDX(SND_US16X08_ID_COMP_THRESHOLD)][index]
+ - SND_US16X08_COMP_THRESHOLD_BIAS;
+ buf[11] = ratio_map[store->val[
+ COMP_STORE_IDX(SND_US16X08_ID_COMP_RATIO)][index]];
+ buf[14] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_ATTACK)][index]
+ + SND_US16X08_COMP_ATTACK_BIAS;
+ buf[17] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_RELEASE)][index]
+ + SND_US16X08_COMP_RELEASE_BIAS;
+ buf[20] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_GAIN)][index];
+ buf[26] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)][index];
+
+ /* place channel selector in message buffer */
+ buf[5] = index + 1;
+
+ err = snd_us16x08_send_urb(chip, buf, sizeof(comp_msg));
+
+ if (err > 0) {
+ elem->cached |= 1 << index;
+ elem->cache_val[index] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set compressor, err:%d\n", err);
+ }
+
+ return 1;
+}
+
+static int snd_us16x08_eqswitch_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int val = 0;
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_us16x08_eq_store *store =
+ ((struct snd_us16x08_eq_store *) elem->private_data);
+ int index = ucontrol->id.index;
+
+ /* get low switch from cache is enough, cause all bands are together */
+ val = store->val[EQ_STORE_BAND_IDX(elem->head.id)]
+ [EQ_STORE_PARAM_IDX(elem->head.id)][index];
+ ucontrol->value.integer.value[0] = val;
+
+ return 0;
+}
+
+static int snd_us16x08_eqswitch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ struct snd_us16x08_eq_store *store =
+ ((struct snd_us16x08_eq_store *) elem->private_data);
+ int index = ucontrol->id.index;
+
+ char buf[sizeof(eqs_msq)];
+ int val, err = 0;
+ int b_idx;
+
+ /* new control value incl. bias*/
+ val = ucontrol->value.integer.value[0] + SND_US16X08_KCBIAS(kcontrol);
+
+ /* prepare URB message from EQ template */
+ memcpy(buf, eqs_msq, sizeof(eqs_msq));
+
+ /* place channel index in URB message */
+ buf[5] = index + 1;
+ for (b_idx = 0; b_idx < SND_US16X08_ID_EQ_BAND_COUNT; b_idx++) {
+ /* all four EQ bands have to be enabled/disabled in once */
+ buf[20] = val;
+ buf[17] = store->val[b_idx][2][index];
+ buf[14] = store->val[b_idx][1][index];
+ buf[11] = store->val[b_idx][0][index];
+ buf[8] = b_idx + 1;
+ err = snd_us16x08_send_urb(chip, buf, sizeof(eqs_msq));
+ if (err < 0)
+ break;
+ store->val[b_idx][3][index] = val;
+ msleep(15);
+ }
+
+ if (err > 0) {
+ elem->cached |= 1 << index;
+ elem->cache_val[index] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set eq switch, err:%d\n", err);
+ }
+
+ return 1;
+}
+
+static int snd_us16x08_eq_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int val = 0;
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_us16x08_eq_store *store =
+ ((struct snd_us16x08_eq_store *) elem->private_data);
+ int index = ucontrol->id.index;
+ int b_idx = EQ_STORE_BAND_IDX(elem->head.id) - 1;
+ int p_idx = EQ_STORE_PARAM_IDX(elem->head.id);
+
+ val = store->val[b_idx][p_idx][index];
+
+ ucontrol->value.integer.value[0] = val;
+
+ return 0;
+}
+
+static int snd_us16x08_eq_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ struct snd_us16x08_eq_store *store =
+ ((struct snd_us16x08_eq_store *) elem->private_data);
+ int index = ucontrol->id.index;
+ char buf[sizeof(eqs_msq)];
+ int val, err = 0;
+ int b_idx = EQ_STORE_BAND_IDX(elem->head.id) - 1;
+ int p_idx = EQ_STORE_PARAM_IDX(elem->head.id);
+
+ /* copy URB buffer from EQ template */
+ memcpy(buf, eqs_msq, sizeof(eqs_msq));
+
+ val = ucontrol->value.integer.value[0];
+
+ /* sanity check */
+ if (val < SND_US16X08_KCMIN(kcontrol)
+ || val > SND_US16X08_KCMAX(kcontrol))
+ return -EINVAL;
+
+ store->val[b_idx][p_idx][index] = val;
+ buf[20] = store->val[b_idx][3][index];
+ buf[17] = store->val[b_idx][2][index];
+ buf[14] = store->val[b_idx][1][index];
+ buf[11] = store->val[b_idx][0][index];
+
+ /* place channel index in URB buffer */
+ buf[5] = index + 1;
+
+ /* place EQ band in URB buffer */
+ buf[8] = b_idx + 1;
+
+ err = snd_us16x08_send_urb(chip, buf, sizeof(eqs_msq));
+
+ if (err > 0) {
+ /* store new value in EQ band cache */
+ elem->cached |= 1 << index;
+ elem->cache_val[index] = val;
+ } else {
+ usb_audio_dbg(chip, "Failed to set eq param, err:%d\n", err);
+ }
+
+ return 1;
+}
+
+static int snd_us16x08_meter_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->count = 1;
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->value.integer.max = 0x7FFF;
+ uinfo->value.integer.min = 0;
+
+ return 0;
+}
+
+/* calculate compressor index for reduction level request */
+static int snd_get_meter_comp_index(struct snd_us16x08_meter_store *store)
+{
+ int ret;
+
+ /* any channel active */
+ if (store->comp_active_index) {
+ /* check for stereo link */
+ if (store->comp_active_index & 0x20) {
+ /* reset comp_index to left channel*/
+ if (store->comp_index -
+ store->comp_active_index > 1)
+ store->comp_index =
+ store->comp_active_index;
+
+ ret = store->comp_index++ & 0x1F;
+ } else {
+ /* no stereo link */
+ ret = store->comp_active_index;
+ }
+ } else {
+ /* skip channels with no compressor active */
+ while (!store->comp_store->val[
+ COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)]
+ [store->comp_index - 1]
+ && store->comp_index <= SND_US16X08_MAX_CHANNELS) {
+ store->comp_index++;
+ }
+ ret = store->comp_index++;
+ if (store->comp_index > SND_US16X08_MAX_CHANNELS)
+ store->comp_index = 1;
+ }
+ return ret;
+}
+
+/* retrieve the meter level values from URB message */
+static void get_meter_levels_from_urb(int s,
+ struct snd_us16x08_meter_store *store,
+ u8 *meter_urb)
+{
+ int val = MUC2(meter_urb, s) + (MUC3(meter_urb, s) << 8);
+
+ if (MUA0(meter_urb, s) == 0x61 && MUA1(meter_urb, s) == 0x02 &&
+ MUA2(meter_urb, s) == 0x04 && MUB0(meter_urb, s) == 0x62) {
+ if (MUC0(meter_urb, s) == 0x72)
+ store->meter_level[MUB2(meter_urb, s) - 1] = val;
+ if (MUC0(meter_urb, s) == 0xb2)
+ store->comp_level[MUB2(meter_urb, s) - 1] = val;
+ }
+ if (MUA0(meter_urb, s) == 0x61 && MUA1(meter_urb, s) == 0x02 &&
+ MUA2(meter_urb, s) == 0x02 && MUB0(meter_urb, s) == 0x62)
+ store->master_level[MUB2(meter_urb, s) - 1] = val;
+}
+
+/* Function to retrieve current meter values from the device.
+ *
+ * The device needs to be polled for meter values with an initial
+ * requests. It will return with a sequence of different meter value
+ * packages. The first request (case 0:) initiate this meter response sequence.
+ * After the third response, an additional request can be placed,
+ * to retrieve compressor reduction level value for given channel. This round
+ * trip channel selector will skip all inactive compressors.
+ * A mixer can interrupt this round-trip by selecting one ore two (stereo-link)
+ * specific channels.
+ */
+static int snd_us16x08_meter_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int i, set;
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_usb_audio *chip = elem->head.mixer->chip;
+ struct snd_us16x08_meter_store *store = elem->private_data;
+ u8 meter_urb[64];
+ char tmp[max(sizeof(mix_init_msg1), sizeof(mix_init_msg2))];
+
+ if (elem) {
+ store = (struct snd_us16x08_meter_store *) elem->private_data;
+ chip = elem->head.mixer->chip;
+ } else
+ return 0;
+
+ switch (kcontrol->private_value) {
+ case 0:
+ memcpy(tmp, mix_init_msg1, sizeof(mix_init_msg1));
+ snd_us16x08_send_urb(chip, tmp, 4);
+ snd_us16x08_recv_urb(chip, meter_urb,
+ sizeof(meter_urb));
+ kcontrol->private_value++;
+ break;
+ case 1:
+ snd_us16x08_recv_urb(chip, meter_urb,
+ sizeof(meter_urb));
+ kcontrol->private_value++;
+ break;
+ case 2:
+ snd_us16x08_recv_urb(chip, meter_urb,
+ sizeof(meter_urb));
+ kcontrol->private_value++;
+ break;
+ case 3:
+ memcpy(tmp, mix_init_msg2, sizeof(mix_init_msg2));
+ tmp[2] = snd_get_meter_comp_index(store);
+ snd_us16x08_send_urb(chip, tmp, 10);
+ snd_us16x08_recv_urb(chip, meter_urb,
+ sizeof(meter_urb));
+ kcontrol->private_value = 0;
+ break;
+ }
+
+ for (set = 0; set < 6; set++)
+ get_meter_levels_from_urb(set, store, meter_urb);
+
+ for (i = 0; i < SND_US16X08_MAX_CHANNELS; i++) {
+ ucontrol->value.integer.value[i] =
+ store ? store->meter_level[i] : 0;
+ }
+
+ ucontrol->value.integer.value[i++] = store ? store->master_level[0] : 0;
+ ucontrol->value.integer.value[i++] = store ? store->master_level[1] : 0;
+
+ for (i = 2; i < SND_US16X08_MAX_CHANNELS + 2; i++)
+ ucontrol->value.integer.value[i + SND_US16X08_MAX_CHANNELS] =
+ store ? store->comp_level[i - 2] : 0;
+
+ return 1;
+}
+
+static int snd_us16x08_meter_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *elem = kcontrol->private_data;
+ struct snd_us16x08_meter_store *store = elem->private_data;
+ int val;
+
+ val = ucontrol->value.integer.value[0];
+
+ /* sanity check */
+ if (val < 0 || val >= SND_US16X08_MAX_CHANNELS)
+ return -EINVAL;
+
+ store->comp_active_index = val;
+ store->comp_index = val;
+
+ return 1;
+}
+
+static struct snd_kcontrol_new snd_us16x08_ch_boolean_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_switch_info,
+ .get = snd_us16x08_channel_get,
+ .put = snd_us16x08_channel_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
+};
+
+static struct snd_kcontrol_new snd_us16x08_ch_int_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_channel_get,
+ .put = snd_us16x08_channel_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_FADER_BIAS, 1, 0, 133)
+};
+
+static struct snd_kcontrol_new snd_us16x08_pan_int_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_channel_get,
+ .put = snd_us16x08_channel_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_FADER_BIAS, 1, 0, 255)
+};
+
+static struct snd_kcontrol_new snd_us16x08_master_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 1,
+ .info = snd_us16x08_master_info,
+ .get = snd_us16x08_master_get,
+ .put = snd_us16x08_master_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_FADER_BIAS, 1, 0, 133)
+};
+
+static struct snd_kcontrol_new snd_us16x08_route_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 8,
+ .info = snd_us16x08_route_info,
+ .get = snd_us16x08_route_get,
+ .put = snd_us16x08_route_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 9)
+};
+
+static struct snd_kcontrol_new snd_us16x08_bus_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 1,
+ .info = snd_us16x08_switch_info,
+ .get = snd_us16x08_bus_get,
+ .put = snd_us16x08_bus_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
+};
+
+static struct snd_kcontrol_new snd_us16x08_compswitch_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_switch_info,
+ .get = snd_us16x08_comp_get,
+ .put = snd_us16x08_comp_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
+};
+
+static struct snd_kcontrol_new snd_us16x08_comp_threshold_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_comp_get,
+ .put = snd_us16x08_comp_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_COMP_THRESHOLD_BIAS, 1,
+ 0, 0x20)
+};
+
+static struct snd_kcontrol_new snd_us16x08_comp_ratio_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_comp_get,
+ .put = snd_us16x08_comp_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0,
+ sizeof(ratio_map) - 1), /*max*/
+};
+
+static struct snd_kcontrol_new snd_us16x08_comp_gain_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_comp_get,
+ .put = snd_us16x08_comp_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x14)
+};
+
+static struct snd_kcontrol_new snd_us16x08_comp_attack_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_comp_get,
+ .put = snd_us16x08_comp_put,
+ .private_value =
+ SND_US16X08_KCSET(SND_US16X08_COMP_ATTACK_BIAS, 1, 0, 0xc6),
+};
+
+static struct snd_kcontrol_new snd_us16x08_comp_release_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_comp_get,
+ .put = snd_us16x08_comp_put,
+ .private_value =
+ SND_US16X08_KCSET(SND_US16X08_COMP_RELEASE_BIAS, 1, 0, 0x63),
+};
+
+static struct snd_kcontrol_new snd_us16x08_eq_gain_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_eq_get,
+ .put = snd_us16x08_eq_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 24),
+};
+
+static struct snd_kcontrol_new snd_us16x08_eq_low_freq_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_eq_get,
+ .put = snd_us16x08_eq_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x1F),
+};
+
+static struct snd_kcontrol_new snd_us16x08_eq_mid_freq_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_eq_get,
+ .put = snd_us16x08_eq_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x3F)
+};
+
+static struct snd_kcontrol_new snd_us16x08_eq_mid_width_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_eq_get,
+ .put = snd_us16x08_eq_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x06)
+};
+
+static struct snd_kcontrol_new snd_us16x08_eq_high_freq_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_mix_info,
+ .get = snd_us16x08_eq_get,
+ .put = snd_us16x08_eq_put,
+ .private_value =
+ SND_US16X08_KCSET(SND_US16X08_EQ_HIGHFREQ_BIAS, 1, 0, 0x1F)
+};
+
+static struct snd_kcontrol_new snd_us16x08_eq_switch_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 16,
+ .info = snd_us16x08_switch_info,
+ .get = snd_us16x08_eqswitch_get,
+ .put = snd_us16x08_eqswitch_put,
+ .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
+};
+
+static struct snd_kcontrol_new snd_us16x08_meter_ctl = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .count = 1,
+ .info = snd_us16x08_meter_info,
+ .get = snd_us16x08_meter_get,
+ .put = snd_us16x08_meter_put
+};
+
+/* control store preparation */
+
+/* setup compressor store and assign default value */
+static struct snd_us16x08_comp_store *snd_us16x08_create_comp_store(void)
+{
+ int i = 0;
+ struct snd_us16x08_comp_store *tmp =
+ kmalloc(sizeof(struct snd_us16x08_comp_store), GFP_KERNEL);
+
+ if (tmp == NULL)
+ return NULL;
+
+ for (i = 0; i < SND_US16X08_MAX_CHANNELS; i++) {
+ tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_THRESHOLD)][i]
+ = 0x20;
+ tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_RATIO)][i] = 0x00;
+ tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_GAIN)][i] = 0x00;
+ tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)][i] = 0x00;
+ tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_ATTACK)][i] = 0x00;
+ tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_RELEASE)][i] = 0x00;
+ }
+ return tmp;
+}
+
+/* setup EQ store and assign default values */
+static struct snd_us16x08_eq_store *snd_us16x08_create_eq_store(void)
+{
+ int i, b_idx;
+ struct snd_us16x08_eq_store *tmp =
+ kmalloc(sizeof(struct snd_us16x08_eq_store), GFP_KERNEL);
+
+ if (tmp == NULL)
+ return NULL;
+
+ for (i = 0; i < SND_US16X08_MAX_CHANNELS; i++) {
+ for (b_idx = 0; b_idx < SND_US16X08_ID_EQ_BAND_COUNT; b_idx++) {
+ tmp->val[b_idx][0][i] = 0x0c;
+ tmp->val[b_idx][3][i] = 0x00;
+ switch (b_idx) {
+ case 0: /* EQ Low */
+ tmp->val[b_idx][1][i] = 0x05;
+ tmp->val[b_idx][2][i] = 0xff;
+ break;
+ case 1: /* EQ Mid low */
+ tmp->val[b_idx][1][i] = 0x0e;
+ tmp->val[b_idx][2][i] = 0x02;
+ break;
+ case 2: /* EQ Mid High */
+ tmp->val[b_idx][1][i] = 0x1b;
+ tmp->val[b_idx][2][i] = 0x02;
+ break;
+ case 3: /* EQ High */
+ tmp->val[b_idx][1][i] = 0x2f
+ - SND_US16X08_EQ_HIGHFREQ_BIAS;
+ tmp->val[b_idx][2][i] = 0xff;
+ break;
+ }
+ }
+ }
+ return tmp;
+}
+
+struct snd_us16x08_meter_store *snd_us16x08_create_meter_store(void)
+{
+ struct snd_us16x08_meter_store *tmp =
+ kzalloc(sizeof(struct snd_us16x08_meter_store), GFP_KERNEL);
+
+ if (!tmp)
+ return NULL;
+ tmp->comp_index = 1;
+ tmp->comp_active_index = 0;
+ return tmp;
+
+}
+
+static int add_new_ctl(struct usb_mixer_interface *mixer,
+ const struct snd_kcontrol_new *ncontrol,
+ int index, int val_type, int channels,
+ const char *name, const void *opt,
+ void (*freeer)(struct snd_kcontrol *kctl),
+ struct usb_mixer_elem_info **elem_ret)
+{
+ struct snd_kcontrol *kctl;
+ struct usb_mixer_elem_info *elem;
+ int err;
+
+ usb_audio_dbg(mixer->chip, "us16x08 add mixer %s\n", name);
+
+ elem = kzalloc(sizeof(*elem), GFP_KERNEL);
+ if (!elem)
+ return -ENOMEM;
+
+ elem->head.mixer = mixer;
+ elem->head.resume = NULL;
+ elem->control = 0;
+ elem->idx_off = 0;
+ elem->head.id = index;
+ elem->val_type = val_type;
+ elem->channels = channels;
+ elem->private_data = (void *) opt;
+
+ kctl = snd_ctl_new1(ncontrol, elem);
+ if (!kctl) {
+ kfree(elem);
+ return -ENOMEM;
+ }
+
+ kctl->private_free = freeer;
+
+ strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
+
+ err = snd_usb_mixer_add_control(&elem->head, kctl);
+ if (err < 0)
+ return err;
+
+ if (elem_ret)
+ *elem_ret = elem;
+
+ return 0;
+}
+
+static struct snd_us16x08_control_params control_params;
+
+/* table of EQ controls */
+static struct snd_us16x08_control_params eq_controls[] = {
+ { /* EQ switch */
+ .kcontrol_new = &snd_us16x08_eq_switch_ctl,
+ .control_id = SND_US16X08_ID_EQENABLE,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "EQ Switch",
+ .freeer = snd_usb_mixer_elem_free
+ },
+ { /* EQ low gain */
+ .kcontrol_new = &snd_us16x08_eq_gain_ctl,
+ .control_id = SND_US16X08_ID_EQLOWLEVEL,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ Low Volume",
+ .freeer = snd_usb_mixer_elem_free
+ },
+ { /* EQ low freq */
+ .kcontrol_new = &snd_us16x08_eq_low_freq_ctl,
+ .control_id = SND_US16X08_ID_EQLOWFREQ,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ Low Frequence",
+ .freeer = NULL
+ },
+ { /* EQ mid low gain */
+ .kcontrol_new = &snd_us16x08_eq_gain_ctl,
+ .control_id = SND_US16X08_ID_EQLOWMIDLEVEL,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ MidLow Volume",
+ .freeer = snd_usb_mixer_elem_free
+ },
+ { /* EQ mid low freq */
+ .kcontrol_new = &snd_us16x08_eq_mid_freq_ctl,
+ .control_id = SND_US16X08_ID_EQLOWMIDFREQ,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ MidLow Frequence",
+ .freeer = NULL
+ },
+ { /* EQ mid low Q */
+ .kcontrol_new = &snd_us16x08_eq_mid_width_ctl,
+ .control_id = SND_US16X08_ID_EQLOWMIDWIDTH,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ MidQLow Q",
+ .freeer = NULL
+ },
+ { /* EQ mid high gain */
+ .kcontrol_new = &snd_us16x08_eq_gain_ctl,
+ .control_id = SND_US16X08_ID_EQHIGHMIDLEVEL,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ MidHigh Volume",
+ .freeer = snd_usb_mixer_elem_free
+ },
+ { /* EQ mid high freq */
+ .kcontrol_new = &snd_us16x08_eq_mid_freq_ctl,
+ .control_id = SND_US16X08_ID_EQHIGHMIDFREQ,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ MidHigh Frequence",
+ .freeer = NULL
+ },
+ { /* EQ mid high Q */
+ .kcontrol_new = &snd_us16x08_eq_mid_width_ctl,
+ .control_id = SND_US16X08_ID_EQHIGHMIDWIDTH,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ MidHigh Q",
+ .freeer = NULL
+ },
+ { /* EQ high gain */
+ .kcontrol_new = &snd_us16x08_eq_gain_ctl,
+ .control_id = SND_US16X08_ID_EQHIGHLEVEL,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ High Volume",
+ .freeer = snd_usb_mixer_elem_free
+ },
+ { /* EQ low freq */
+ .kcontrol_new = &snd_us16x08_eq_high_freq_ctl,
+ .control_id = SND_US16X08_ID_EQHIGHFREQ,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "EQ High Frequence",
+ .freeer = NULL
+ },
+};
+
+/* table of compressor controls */
+static struct snd_us16x08_control_params comp_controls[] = {
+ { /* Comp enable */
+ .kcontrol_new = &snd_us16x08_compswitch_ctl,
+ .control_id = SND_US16X08_ID_COMP_SWITCH,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "Compressor Switch",
+ .freeer = snd_usb_mixer_elem_free
+ },
+ { /* Comp threshold */
+ .kcontrol_new = &snd_us16x08_comp_threshold_ctl,
+ .control_id = SND_US16X08_ID_COMP_THRESHOLD,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Compressor Threshold Volume",
+ .freeer = NULL
+ },
+ { /* Comp ratio */
+ .kcontrol_new = &snd_us16x08_comp_ratio_ctl,
+ .control_id = SND_US16X08_ID_COMP_RATIO,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Compressor Ratio",
+ .freeer = NULL
+ },
+ { /* Comp attack */
+ .kcontrol_new = &snd_us16x08_comp_attack_ctl,
+ .control_id = SND_US16X08_ID_COMP_ATTACK,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Compressor Attack",
+ .freeer = NULL
+ },
+ { /* Comp release */
+ .kcontrol_new = &snd_us16x08_comp_release_ctl,
+ .control_id = SND_US16X08_ID_COMP_RELEASE,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Compressor Release",
+ .freeer = NULL
+ },
+ { /* Comp gain */
+ .kcontrol_new = &snd_us16x08_comp_gain_ctl,
+ .control_id = SND_US16X08_ID_COMP_GAIN,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Compressor Volume",
+ .freeer = NULL
+ },
+};
+
+/* table of channel controls */
+static struct snd_us16x08_control_params channel_controls[] = {
+ { /* Phase */
+ .kcontrol_new = &snd_us16x08_ch_boolean_ctl,
+ .control_id = SND_US16X08_ID_PHASE,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "Phase Switch",
+ .freeer = snd_usb_mixer_elem_free,
+ .default_val = 0
+ },
+ { /* Fader */
+ .kcontrol_new = &snd_us16x08_ch_int_ctl,
+ .control_id = SND_US16X08_ID_FADER,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Line Volume",
+ .freeer = NULL,
+ .default_val = 127
+ },
+ { /* Mute */
+ .kcontrol_new = &snd_us16x08_ch_boolean_ctl,
+ .control_id = SND_US16X08_ID_MUTE,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "Mute Switch",
+ .freeer = NULL,
+ .default_val = 0
+ },
+ { /* Pan */
+ .kcontrol_new = &snd_us16x08_pan_int_ctl,
+ .control_id = SND_US16X08_ID_PAN,
+ .type = USB_MIXER_U16,
+ .num_channels = 16,
+ .name = "Pan Left-Right Volume",
+ .freeer = NULL,
+ .default_val = 127
+ },
+};
+
+/* table of master controls */
+static struct snd_us16x08_control_params master_controls[] = {
+ { /* Master */
+ .kcontrol_new = &snd_us16x08_master_ctl,
+ .control_id = SND_US16X08_ID_FADER,
+ .type = USB_MIXER_U8,
+ .num_channels = 16,
+ .name = "Master Volume",
+ .freeer = NULL,
+ .default_val = 127
+ },
+ { /* Bypass */
+ .kcontrol_new = &snd_us16x08_bus_ctl,
+ .control_id = SND_US16X08_ID_BYPASS,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "DSP Bypass Switch",
+ .freeer = NULL,
+ .default_val = 0
+ },
+ { /* Buss out */
+ .kcontrol_new = &snd_us16x08_bus_ctl,
+ .control_id = SND_US16X08_ID_BUSS_OUT,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "Buss Out Switch",
+ .freeer = NULL,
+ .default_val = 0
+ },
+ { /* Master mute */
+ .kcontrol_new = &snd_us16x08_bus_ctl,
+ .control_id = SND_US16X08_ID_MUTE,
+ .type = USB_MIXER_BOOLEAN,
+ .num_channels = 16,
+ .name = "Master Mute Switch",
+ .freeer = NULL,
+ .default_val = 0
+ },
+
+};
+
+int snd_us16x08_controls_create(struct usb_mixer_interface *mixer)
+{
+ int i, j;
+ int err;
+ struct usb_mixer_elem_info *elem;
+ struct snd_us16x08_comp_store *comp_store;
+ struct snd_us16x08_meter_store *meter_store;
+ struct snd_us16x08_eq_store *eq_store;
+
+ /* just check for non-MIDI interface */
+ if (mixer->hostif->desc.bInterfaceNumber == 3) {
+
+ /* create compressor mixer elements */
+ comp_store = snd_us16x08_create_comp_store();
+ if (comp_store == NULL)
+ return -ENOMEM;
+
+ /* create eq store */
+ eq_store = snd_us16x08_create_eq_store();
+ if (eq_store == NULL) {
+ kfree(comp_store);
+ return -ENOMEM;
+ }
+
+ /* create meters store */
+ meter_store = snd_us16x08_create_meter_store();
+ if (meter_store == NULL) {
+ kfree(comp_store);
+ kfree(eq_store);
+ return -ENOMEM;
+ }
+
+ /* add routing control */
+ err = add_new_ctl(mixer, &snd_us16x08_route_ctl,
+ SND_US16X08_ID_ROUTE, USB_MIXER_U8, 8, "Line Out Route",
+ NULL, NULL, &elem);
+ if (err < 0) {
+ usb_audio_dbg(mixer->chip,
+ "Failed to create route control, err:%d\n",
+ err);
+ return err;
+ }
+ for (i = 0; i < 8; i++)
+ elem->cache_val[i] = i < 2 ? i : i + 2;
+ elem->cached = 0xff;
+
+ /* add master controls */
+ for (i = 0;
+ i < sizeof(master_controls)
+ / sizeof(control_params);
+ i++) {
+
+ err = add_new_ctl(mixer,
+ master_controls[i].kcontrol_new,
+ master_controls[i].control_id,
+ master_controls[i].type,
+ master_controls[i].num_channels,
+ master_controls[i].name,
+ comp_store,
+ master_controls[i].freeer, &elem);
+ if (err < 0)
+ return err;
+ elem->cache_val[0] = master_controls[i].default_val;
+ elem->cached = 1;
+ }
+
+ /* add channel controls */
+ for (i = 0;
+ i < sizeof(channel_controls)
+ / sizeof(control_params);
+ i++) {
+
+ err = add_new_ctl(mixer,
+ channel_controls[i].kcontrol_new,
+ channel_controls[i].control_id,
+ channel_controls[i].type,
+ channel_controls[i].num_channels,
+ channel_controls[i].name,
+ comp_store,
+ channel_controls[i].freeer, &elem);
+ if (err < 0)
+ return err;
+ for (j = 0; j < SND_US16X08_MAX_CHANNELS; j++) {
+ elem->cache_val[j] =
+ channel_controls[i].default_val;
+ }
+ elem->cached = 0xffff;
+ }
+
+ /* add EQ controls */
+ for (i = 0; i < sizeof(eq_controls) /
+ sizeof(control_params); i++) {
+
+ err = add_new_ctl(mixer,
+ eq_controls[i].kcontrol_new,
+ eq_controls[i].control_id,
+ eq_controls[i].type,
+ eq_controls[i].num_channels,
+ eq_controls[i].name,
+ eq_store,
+ eq_controls[i].freeer, NULL);
+ if (err < 0)
+ return err;
+ }
+
+ /* add compressor controls */
+ for (i = 0;
+ i < sizeof(comp_controls)
+ / sizeof(control_params);
+ i++) {
+
+ err = add_new_ctl(mixer,
+ comp_controls[i].kcontrol_new,
+ comp_controls[i].control_id,
+ comp_controls[i].type,
+ comp_controls[i].num_channels,
+ comp_controls[i].name,
+ comp_store,
+ comp_controls[i].freeer, NULL);
+ if (err < 0)
+ return err;
+ }
+
+ /* meter function 'get' must access to compressor store
+ * so place a reference here
+ */
+ meter_store->comp_store = comp_store;
+ err = add_new_ctl(mixer, &snd_us16x08_meter_ctl,
+ SND_US16X08_ID_METER, USB_MIXER_U16, 0, "Level Meter",
+ (void *) meter_store, snd_usb_mixer_elem_free, NULL);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
projects / platform / kernel / linux-rpi.git / commitdiff