diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/usb/mixer_us16x08.c | 1414 |
1 files changed, 1414 insertions, 0 deletions
diff --git a/sound/usb/mixer_us16x08.c b/sound/usb/mixer_us16x08.c new file mode 100644 index 000000000..6eb7d93b3 --- /dev/null +++ b/sound/usb/mixer_us16x08.c @@ -0,0 +1,1414 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Tascam US-16x08 ALSA driver + * + * Copyright (c) 2016 by Detlef Urban (onkel@paraair.de) + */ + +#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 */ +static const char *const 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) +{ + return snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0), + SND_US16X08_URB_REQUEST, SND_US16X08_URB_REQUESTTYPE, + 0, 0, buf, size); +} + +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; + + /* get the new value (no bias for routes) */ + val = ucontrol->value.enumerated.item[0]; + + /* sanity check */ + if (val < 0 || val > 9) + return -EINVAL; + + /* prepare the message buffer from template */ + memcpy(buf, route_msg, sizeof(route_msg)); + + 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; + int index = ucontrol->id.index; + + /* 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; + + /* prepare the message buffer from template */ + memcpy(buf, mix_msg_out, sizeof(mix_msg_out)); + + 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 bus parameter, 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; + + val = ucontrol->value.integer.value[0]; + + /* sanity check */ + if (val < SND_US16X08_KCMIN(kcontrol) + || val > SND_US16X08_KCMAX(kcontrol)) + return -EINVAL; + + /* prepare URB message from template */ + memcpy(buf, mix_msg_in, sizeof(mix_msg_in)); + + /* 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 = 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 = elem->private_data; + int index = ucontrol->id.index; + char buf[sizeof(comp_msg)]; + int val_idx, val; + int err; + + val = ucontrol->value.integer.value[0]; + + /* sanity check */ + if (val < SND_US16X08_KCMIN(kcontrol) + || val > SND_US16X08_KCMAX(kcontrol)) + return -EINVAL; + + /* new control value incl. bias*/ + val_idx = elem->head.id - SND_US16X08_ID_COMP_BASE; + + store->val[val_idx][index] = ucontrol->value.integer.value[0]; + + /* prepare compressor URB message from template */ + memcpy(buf, comp_msg, sizeof(comp_msg)); + + /* 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; + struct usb_mixer_elem_info *elem = kcontrol->private_data; + struct snd_us16x08_eq_store *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 = 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; + struct usb_mixer_elem_info *elem = kcontrol->private_data; + struct snd_us16x08_eq_store *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 = elem->private_data; + int index = ucontrol->id.index; + char buf[sizeof(eqs_msq)]; + int val, err; + int b_idx = EQ_STORE_BAND_IDX(elem->head.id) - 1; + int p_idx = EQ_STORE_PARAM_IDX(elem->head.id); + + val = ucontrol->value.integer.value[0]; + + /* sanity check */ + if (val < SND_US16X08_KCMIN(kcontrol) + || val > SND_US16X08_KCMAX(kcontrol)) + return -EINVAL; + + /* copy URB buffer from EQ template */ + memcpy(buf, eqs_msq, sizeof(eqs_msq)); + + 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 = 34; + 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_index <= SND_US16X08_MAX_CHANNELS + && !store->comp_store->val[ + COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)] + [store->comp_index - 1]) { + 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]; + + switch (kcontrol->private_value) { + case 0: { + char tmp[sizeof(mix_init_msg1)]; + + 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: { + char tmp[sizeof(mix_init_msg2)]; + + 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const 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; + struct snd_us16x08_comp_store *tmp; + + tmp = kmalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + 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; + + tmp = kmalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + 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; +} + +static struct snd_us16x08_meter_store *snd_us16x08_create_meter_store(void) +{ + struct snd_us16x08_meter_store *tmp; + + tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + return NULL; + tmp->comp_index = 1; + tmp->comp_active_index = 0; + return tmp; +} + +/* release elem->private_free as well; called only once for each *_store */ +static void elem_private_free(struct snd_kcontrol *kctl) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + + if (elem) + kfree(elem->private_data); + kfree(elem); + kctl->private_data = NULL; +} + +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, void *opt, + bool do_private_free, + 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 = opt; + + kctl = snd_ctl_new1(ncontrol, elem); + if (!kctl) { + kfree(elem); + return -ENOMEM; + } + + if (do_private_free) + kctl->private_free = elem_private_free; + else + kctl->private_free = snd_usb_mixer_elem_free; + + strscpy(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; +} + +/* table of EQ controls */ +static const 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", + }, + { /* 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", + }, + { /* 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 Frequency", + }, + { /* 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", + }, + { /* 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 Frequency", + }, + { /* 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 MidLow Q", + }, + { /* 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", + }, + { /* 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 Frequency", + }, + { /* 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", + }, + { /* 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", + }, + { /* 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 Frequency", + }, +}; + +/* table of compressor controls */ +static const 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", + }, + { /* 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", + }, + { /* 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", + }, + { /* 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", + }, + { /* 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", + }, + { /* 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", + }, +}; + +/* table of channel controls */ +static const 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", + .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", + .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", + .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", + .default_val = 127 + }, +}; + +/* table of master controls */ +static const 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", + .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", + .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", + .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", + .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) { + + /* add routing control */ + err = add_new_ctl(mixer, &snd_us16x08_route_ctl, + SND_US16X08_ID_ROUTE, USB_MIXER_U8, 8, "Line Out Route", + NULL, false, &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; + + /* create compressor mixer elements */ + comp_store = snd_us16x08_create_comp_store(); + if (!comp_store) + return -ENOMEM; + + /* add master controls */ + for (i = 0; i < ARRAY_SIZE(master_controls); 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, + i == 0, /* release comp_store only once */ + &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 < ARRAY_SIZE(channel_controls); 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, + false, &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; + } + + /* create eq store */ + eq_store = snd_us16x08_create_eq_store(); + if (!eq_store) + return -ENOMEM; + + /* add EQ controls */ + for (i = 0; i < ARRAY_SIZE(eq_controls); 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, + i == 0, /* release eq_store only once */ + NULL); + if (err < 0) + return err; + } + + /* add compressor controls */ + for (i = 0; i < ARRAY_SIZE(comp_controls); 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, + false, NULL); + if (err < 0) + return err; + } + + /* create meters store */ + meter_store = snd_us16x08_create_meter_store(); + if (!meter_store) + return -ENOMEM; + + /* 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", + meter_store, true, NULL); + if (err < 0) + return err; + } + + return 0; +} + |