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3723 lines
98 KiB
3723 lines
98 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* (Tentative) USB Audio Driver for ALSA |
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* |
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* Mixer control part |
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* |
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* Copyright (c) 2002 by Takashi Iwai <[email protected]> |
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* |
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* Many codes borrowed from audio.c by |
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* Alan Cox ([email protected]) |
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* Thomas Sailer ([email protected]) |
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*/ |
|
|
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/* |
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* TODOs, for both the mixer and the streaming interfaces: |
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* |
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* - support for UAC2 effect units |
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* - support for graphical equalizers |
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* - RANGE and MEM set commands (UAC2) |
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* - RANGE and MEM interrupt dispatchers (UAC2) |
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* - audio channel clustering (UAC2) |
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* - audio sample rate converter units (UAC2) |
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* - proper handling of clock multipliers (UAC2) |
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* - dispatch clock change notifications (UAC2) |
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* - stop PCM streams which use a clock that became invalid |
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* - stop PCM streams which use a clock selector that has changed |
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* - parse available sample rates again when clock sources changed |
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*/ |
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|
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#include <linux/bitops.h> |
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#include <linux/init.h> |
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#include <linux/list.h> |
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#include <linux/log2.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/usb.h> |
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#include <linux/usb/audio.h> |
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#include <linux/usb/audio-v2.h> |
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#include <linux/usb/audio-v3.h> |
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|
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#include <sound/core.h> |
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#include <sound/control.h> |
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#include <sound/hwdep.h> |
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#include <sound/info.h> |
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#include <sound/tlv.h> |
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|
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#include "usbaudio.h" |
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#include "mixer.h" |
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#include "helper.h" |
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#include "mixer_quirks.h" |
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#include "power.h" |
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|
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#define MAX_ID_ELEMS 256 |
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|
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struct usb_audio_term { |
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int id; |
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int type; |
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int channels; |
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unsigned int chconfig; |
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int name; |
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}; |
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|
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struct usbmix_name_map; |
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|
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struct mixer_build { |
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struct snd_usb_audio *chip; |
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struct usb_mixer_interface *mixer; |
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unsigned char *buffer; |
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unsigned int buflen; |
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DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); |
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DECLARE_BITMAP(termbitmap, MAX_ID_ELEMS); |
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struct usb_audio_term oterm; |
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const struct usbmix_name_map *map; |
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const struct usbmix_selector_map *selector_map; |
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}; |
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|
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/*E-mu 0202/0404/0204 eXtension Unit(XU) control*/ |
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enum { |
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USB_XU_CLOCK_RATE = 0xe301, |
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USB_XU_CLOCK_SOURCE = 0xe302, |
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USB_XU_DIGITAL_IO_STATUS = 0xe303, |
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USB_XU_DEVICE_OPTIONS = 0xe304, |
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USB_XU_DIRECT_MONITORING = 0xe305, |
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USB_XU_METERING = 0xe306 |
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}; |
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enum { |
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USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ |
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USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ |
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USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ |
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USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ |
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}; |
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|
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/* |
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* manual mapping of mixer names |
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* if the mixer topology is too complicated and the parsed names are |
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* ambiguous, add the entries in usbmixer_maps.c. |
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*/ |
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#include "mixer_maps.c" |
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|
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static const struct usbmix_name_map * |
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find_map(const struct usbmix_name_map *p, int unitid, int control) |
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{ |
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if (!p) |
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return NULL; |
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|
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for (; p->id; p++) { |
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if (p->id == unitid && |
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(!control || !p->control || control == p->control)) |
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return p; |
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} |
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return NULL; |
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} |
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|
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/* get the mapped name if the unit matches */ |
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static int |
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check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) |
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{ |
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int len; |
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|
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if (!p || !p->name) |
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return 0; |
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|
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buflen--; |
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len = strscpy(buf, p->name, buflen); |
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return len < 0 ? buflen : len; |
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} |
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|
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/* ignore the error value if ignore_ctl_error flag is set */ |
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#define filter_error(cval, err) \ |
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((cval)->head.mixer->ignore_ctl_error ? 0 : (err)) |
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|
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/* check whether the control should be ignored */ |
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static inline int |
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check_ignored_ctl(const struct usbmix_name_map *p) |
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{ |
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if (!p || p->name || p->dB) |
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return 0; |
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return 1; |
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} |
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|
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/* dB mapping */ |
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static inline void check_mapped_dB(const struct usbmix_name_map *p, |
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struct usb_mixer_elem_info *cval) |
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{ |
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if (p && p->dB) { |
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cval->dBmin = p->dB->min; |
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cval->dBmax = p->dB->max; |
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cval->min_mute = p->dB->min_mute; |
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cval->initialized = 1; |
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} |
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} |
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|
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/* get the mapped selector source name */ |
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static int check_mapped_selector_name(struct mixer_build *state, int unitid, |
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int index, char *buf, int buflen) |
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{ |
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const struct usbmix_selector_map *p; |
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int len; |
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|
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if (!state->selector_map) |
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return 0; |
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for (p = state->selector_map; p->id; p++) { |
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if (p->id == unitid && index < p->count) { |
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len = strscpy(buf, p->names[index], buflen); |
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return len < 0 ? buflen : len; |
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} |
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} |
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return 0; |
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} |
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|
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/* |
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* find an audio control unit with the given unit id |
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*/ |
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static void *find_audio_control_unit(struct mixer_build *state, |
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unsigned char unit) |
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{ |
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/* we just parse the header */ |
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struct uac_feature_unit_descriptor *hdr = NULL; |
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|
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while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr, |
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USB_DT_CS_INTERFACE)) != NULL) { |
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if (hdr->bLength >= 4 && |
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hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && |
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hdr->bDescriptorSubtype <= UAC3_SAMPLE_RATE_CONVERTER && |
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hdr->bUnitID == unit) |
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return hdr; |
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} |
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|
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return NULL; |
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} |
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|
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/* |
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* copy a string with the given id |
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*/ |
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static int snd_usb_copy_string_desc(struct snd_usb_audio *chip, |
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int index, char *buf, int maxlen) |
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{ |
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int len = usb_string(chip->dev, index, buf, maxlen - 1); |
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|
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if (len < 0) |
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return 0; |
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|
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buf[len] = 0; |
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return len; |
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} |
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|
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/* |
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* convert from the byte/word on usb descriptor to the zero-based integer |
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*/ |
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static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) |
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{ |
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switch (cval->val_type) { |
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case USB_MIXER_BOOLEAN: |
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return !!val; |
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case USB_MIXER_INV_BOOLEAN: |
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return !val; |
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case USB_MIXER_U8: |
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val &= 0xff; |
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break; |
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case USB_MIXER_S8: |
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val &= 0xff; |
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if (val >= 0x80) |
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val -= 0x100; |
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break; |
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case USB_MIXER_U16: |
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val &= 0xffff; |
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break; |
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case USB_MIXER_S16: |
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val &= 0xffff; |
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if (val >= 0x8000) |
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val -= 0x10000; |
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break; |
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} |
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return val; |
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} |
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|
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/* |
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* convert from the zero-based int to the byte/word for usb descriptor |
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*/ |
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static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) |
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{ |
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switch (cval->val_type) { |
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case USB_MIXER_BOOLEAN: |
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return !!val; |
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case USB_MIXER_INV_BOOLEAN: |
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return !val; |
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case USB_MIXER_S8: |
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case USB_MIXER_U8: |
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return val & 0xff; |
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case USB_MIXER_S16: |
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case USB_MIXER_U16: |
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return val & 0xffff; |
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} |
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return 0; /* not reached */ |
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} |
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|
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static int get_relative_value(struct usb_mixer_elem_info *cval, int val) |
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{ |
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if (!cval->res) |
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cval->res = 1; |
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if (val < cval->min) |
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return 0; |
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else if (val >= cval->max) |
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return DIV_ROUND_UP(cval->max - cval->min, cval->res); |
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else |
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return (val - cval->min) / cval->res; |
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} |
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|
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static int get_abs_value(struct usb_mixer_elem_info *cval, int val) |
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{ |
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if (val < 0) |
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return cval->min; |
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if (!cval->res) |
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cval->res = 1; |
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val *= cval->res; |
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val += cval->min; |
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if (val > cval->max) |
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return cval->max; |
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return val; |
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} |
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|
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static int uac2_ctl_value_size(int val_type) |
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{ |
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switch (val_type) { |
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case USB_MIXER_S32: |
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case USB_MIXER_U32: |
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return 4; |
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case USB_MIXER_S16: |
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case USB_MIXER_U16: |
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return 2; |
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default: |
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return 1; |
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} |
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return 0; /* unreachable */ |
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} |
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|
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|
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/* |
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* retrieve a mixer value |
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*/ |
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|
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static inline int mixer_ctrl_intf(struct usb_mixer_interface *mixer) |
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{ |
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return get_iface_desc(mixer->hostif)->bInterfaceNumber; |
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} |
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|
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static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, |
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int validx, int *value_ret) |
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{ |
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struct snd_usb_audio *chip = cval->head.mixer->chip; |
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unsigned char buf[2]; |
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int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
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int timeout = 10; |
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int idx = 0, err; |
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|
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err = snd_usb_lock_shutdown(chip); |
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if (err < 0) |
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return -EIO; |
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|
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while (timeout-- > 0) { |
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idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8); |
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err = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, |
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USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
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validx, idx, buf, val_len); |
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if (err >= val_len) { |
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*value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); |
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err = 0; |
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goto out; |
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} else if (err == -ETIMEDOUT) { |
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goto out; |
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} |
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} |
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usb_audio_dbg(chip, |
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"cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
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request, validx, idx, cval->val_type); |
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err = -EINVAL; |
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|
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out: |
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snd_usb_unlock_shutdown(chip); |
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return err; |
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} |
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|
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static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, |
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int validx, int *value_ret) |
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{ |
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struct snd_usb_audio *chip = cval->head.mixer->chip; |
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/* enough space for one range */ |
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unsigned char buf[sizeof(__u16) + 3 * sizeof(__u32)]; |
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unsigned char *val; |
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int idx = 0, ret, val_size, size; |
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__u8 bRequest; |
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|
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val_size = uac2_ctl_value_size(cval->val_type); |
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|
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if (request == UAC_GET_CUR) { |
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bRequest = UAC2_CS_CUR; |
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size = val_size; |
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} else { |
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bRequest = UAC2_CS_RANGE; |
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size = sizeof(__u16) + 3 * val_size; |
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} |
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|
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memset(buf, 0, sizeof(buf)); |
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|
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if (snd_usb_lock_shutdown(chip)) |
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return -EIO; |
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|
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idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8); |
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ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest, |
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USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
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validx, idx, buf, size); |
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snd_usb_unlock_shutdown(chip); |
|
|
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if (ret < 0) { |
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usb_audio_dbg(chip, |
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"cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
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request, validx, idx, cval->val_type); |
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return ret; |
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} |
|
|
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/* FIXME: how should we handle multiple triplets here? */ |
|
|
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switch (request) { |
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case UAC_GET_CUR: |
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val = buf; |
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break; |
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case UAC_GET_MIN: |
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val = buf + sizeof(__u16); |
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break; |
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case UAC_GET_MAX: |
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val = buf + sizeof(__u16) + val_size; |
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break; |
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case UAC_GET_RES: |
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val = buf + sizeof(__u16) + val_size * 2; |
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break; |
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default: |
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return -EINVAL; |
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} |
|
|
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*value_ret = convert_signed_value(cval, |
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snd_usb_combine_bytes(val, val_size)); |
|
|
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return 0; |
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} |
|
|
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static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, |
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int validx, int *value_ret) |
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{ |
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validx += cval->idx_off; |
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|
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return (cval->head.mixer->protocol == UAC_VERSION_1) ? |
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get_ctl_value_v1(cval, request, validx, value_ret) : |
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get_ctl_value_v2(cval, request, validx, value_ret); |
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} |
|
|
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static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, |
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int validx, int *value) |
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{ |
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return get_ctl_value(cval, UAC_GET_CUR, validx, value); |
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} |
|
|
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/* channel = 0: master, 1 = first channel */ |
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static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, |
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int channel, int *value) |
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{ |
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return get_ctl_value(cval, UAC_GET_CUR, |
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(cval->control << 8) | channel, |
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value); |
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} |
|
|
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int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, |
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int channel, int index, int *value) |
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{ |
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int err; |
|
|
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if (cval->cached & (1 << channel)) { |
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*value = cval->cache_val[index]; |
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return 0; |
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} |
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err = get_cur_mix_raw(cval, channel, value); |
|
if (err < 0) { |
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if (!cval->head.mixer->ignore_ctl_error) |
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usb_audio_dbg(cval->head.mixer->chip, |
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"cannot get current value for control %d ch %d: err = %d\n", |
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cval->control, channel, err); |
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return err; |
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} |
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cval->cached |= 1 << channel; |
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cval->cache_val[index] = *value; |
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return 0; |
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} |
|
|
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/* |
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* set a mixer value |
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*/ |
|
|
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int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, |
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int request, int validx, int value_set) |
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{ |
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struct snd_usb_audio *chip = cval->head.mixer->chip; |
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unsigned char buf[4]; |
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int idx = 0, val_len, err, timeout = 10; |
|
|
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validx += cval->idx_off; |
|
|
|
|
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if (cval->head.mixer->protocol == UAC_VERSION_1) { |
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val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
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} else { /* UAC_VERSION_2/3 */ |
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val_len = uac2_ctl_value_size(cval->val_type); |
|
|
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/* FIXME */ |
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if (request != UAC_SET_CUR) { |
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usb_audio_dbg(chip, "RANGE setting not yet supported\n"); |
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return -EINVAL; |
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} |
|
|
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request = UAC2_CS_CUR; |
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} |
|
|
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value_set = convert_bytes_value(cval, value_set); |
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buf[0] = value_set & 0xff; |
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buf[1] = (value_set >> 8) & 0xff; |
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buf[2] = (value_set >> 16) & 0xff; |
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buf[3] = (value_set >> 24) & 0xff; |
|
|
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err = snd_usb_lock_shutdown(chip); |
|
if (err < 0) |
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return -EIO; |
|
|
|
while (timeout-- > 0) { |
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idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8); |
|
err = snd_usb_ctl_msg(chip->dev, |
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usb_sndctrlpipe(chip->dev, 0), request, |
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USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, |
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validx, idx, buf, val_len); |
|
if (err >= 0) { |
|
err = 0; |
|
goto out; |
|
} else if (err == -ETIMEDOUT) { |
|
goto out; |
|
} |
|
} |
|
usb_audio_dbg(chip, "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", |
|
request, validx, idx, cval->val_type, buf[0], buf[1]); |
|
err = -EINVAL; |
|
|
|
out: |
|
snd_usb_unlock_shutdown(chip); |
|
return err; |
|
} |
|
|
|
static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, |
|
int validx, int value) |
|
{ |
|
return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value); |
|
} |
|
|
|
int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, |
|
int index, int value) |
|
{ |
|
int err; |
|
unsigned int read_only = (channel == 0) ? |
|
cval->master_readonly : |
|
cval->ch_readonly & (1 << (channel - 1)); |
|
|
|
if (read_only) { |
|
usb_audio_dbg(cval->head.mixer->chip, |
|
"%s(): channel %d of control %d is read_only\n", |
|
__func__, channel, cval->control); |
|
return 0; |
|
} |
|
|
|
err = snd_usb_mixer_set_ctl_value(cval, |
|
UAC_SET_CUR, (cval->control << 8) | channel, |
|
value); |
|
if (err < 0) |
|
return err; |
|
cval->cached |= 1 << channel; |
|
cval->cache_val[index] = value; |
|
return 0; |
|
} |
|
|
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/* |
|
* TLV callback for mixer volume controls |
|
*/ |
|
int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, |
|
unsigned int size, unsigned int __user *_tlv) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
DECLARE_TLV_DB_MINMAX(scale, 0, 0); |
|
|
|
if (size < sizeof(scale)) |
|
return -ENOMEM; |
|
if (cval->min_mute) |
|
scale[0] = SNDRV_CTL_TLVT_DB_MINMAX_MUTE; |
|
scale[2] = cval->dBmin; |
|
scale[3] = cval->dBmax; |
|
if (copy_to_user(_tlv, scale, sizeof(scale))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
/* |
|
* parser routines begin here... |
|
*/ |
|
|
|
static int parse_audio_unit(struct mixer_build *state, int unitid); |
|
|
|
|
|
/* |
|
* check if the input/output channel routing is enabled on the given bitmap. |
|
* used for mixer unit parser |
|
*/ |
|
static int check_matrix_bitmap(unsigned char *bmap, |
|
int ich, int och, int num_outs) |
|
{ |
|
int idx = ich * num_outs + och; |
|
return bmap[idx >> 3] & (0x80 >> (idx & 7)); |
|
} |
|
|
|
/* |
|
* add an alsa control element |
|
* search and increment the index until an empty slot is found. |
|
* |
|
* if failed, give up and free the control instance. |
|
*/ |
|
|
|
int snd_usb_mixer_add_list(struct usb_mixer_elem_list *list, |
|
struct snd_kcontrol *kctl, |
|
bool is_std_info) |
|
{ |
|
struct usb_mixer_interface *mixer = list->mixer; |
|
int err; |
|
|
|
while (snd_ctl_find_id(mixer->chip->card, &kctl->id)) |
|
kctl->id.index++; |
|
err = snd_ctl_add(mixer->chip->card, kctl); |
|
if (err < 0) { |
|
usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n", |
|
err); |
|
return err; |
|
} |
|
list->kctl = kctl; |
|
list->is_std_info = is_std_info; |
|
list->next_id_elem = mixer->id_elems[list->id]; |
|
mixer->id_elems[list->id] = list; |
|
return 0; |
|
} |
|
|
|
/* |
|
* get a terminal name string |
|
*/ |
|
|
|
static struct iterm_name_combo { |
|
int type; |
|
char *name; |
|
} iterm_names[] = { |
|
{ 0x0300, "Output" }, |
|
{ 0x0301, "Speaker" }, |
|
{ 0x0302, "Headphone" }, |
|
{ 0x0303, "HMD Audio" }, |
|
{ 0x0304, "Desktop Speaker" }, |
|
{ 0x0305, "Room Speaker" }, |
|
{ 0x0306, "Com Speaker" }, |
|
{ 0x0307, "LFE" }, |
|
{ 0x0600, "External In" }, |
|
{ 0x0601, "Analog In" }, |
|
{ 0x0602, "Digital In" }, |
|
{ 0x0603, "Line" }, |
|
{ 0x0604, "Legacy In" }, |
|
{ 0x0605, "IEC958 In" }, |
|
{ 0x0606, "1394 DA Stream" }, |
|
{ 0x0607, "1394 DV Stream" }, |
|
{ 0x0700, "Embedded" }, |
|
{ 0x0701, "Noise Source" }, |
|
{ 0x0702, "Equalization Noise" }, |
|
{ 0x0703, "CD" }, |
|
{ 0x0704, "DAT" }, |
|
{ 0x0705, "DCC" }, |
|
{ 0x0706, "MiniDisk" }, |
|
{ 0x0707, "Analog Tape" }, |
|
{ 0x0708, "Phonograph" }, |
|
{ 0x0709, "VCR Audio" }, |
|
{ 0x070a, "Video Disk Audio" }, |
|
{ 0x070b, "DVD Audio" }, |
|
{ 0x070c, "TV Tuner Audio" }, |
|
{ 0x070d, "Satellite Rec Audio" }, |
|
{ 0x070e, "Cable Tuner Audio" }, |
|
{ 0x070f, "DSS Audio" }, |
|
{ 0x0710, "Radio Receiver" }, |
|
{ 0x0711, "Radio Transmitter" }, |
|
{ 0x0712, "Multi-Track Recorder" }, |
|
{ 0x0713, "Synthesizer" }, |
|
{ 0 }, |
|
}; |
|
|
|
static int get_term_name(struct snd_usb_audio *chip, struct usb_audio_term *iterm, |
|
unsigned char *name, int maxlen, int term_only) |
|
{ |
|
struct iterm_name_combo *names; |
|
int len; |
|
|
|
if (iterm->name) { |
|
len = snd_usb_copy_string_desc(chip, iterm->name, |
|
name, maxlen); |
|
if (len) |
|
return len; |
|
} |
|
|
|
/* virtual type - not a real terminal */ |
|
if (iterm->type >> 16) { |
|
if (term_only) |
|
return 0; |
|
switch (iterm->type >> 16) { |
|
case UAC3_SELECTOR_UNIT: |
|
strcpy(name, "Selector"); |
|
return 8; |
|
case UAC3_PROCESSING_UNIT: |
|
strcpy(name, "Process Unit"); |
|
return 12; |
|
case UAC3_EXTENSION_UNIT: |
|
strcpy(name, "Ext Unit"); |
|
return 8; |
|
case UAC3_MIXER_UNIT: |
|
strcpy(name, "Mixer"); |
|
return 5; |
|
default: |
|
return sprintf(name, "Unit %d", iterm->id); |
|
} |
|
} |
|
|
|
switch (iterm->type & 0xff00) { |
|
case 0x0100: |
|
strcpy(name, "PCM"); |
|
return 3; |
|
case 0x0200: |
|
strcpy(name, "Mic"); |
|
return 3; |
|
case 0x0400: |
|
strcpy(name, "Headset"); |
|
return 7; |
|
case 0x0500: |
|
strcpy(name, "Phone"); |
|
return 5; |
|
} |
|
|
|
for (names = iterm_names; names->type; names++) { |
|
if (names->type == iterm->type) { |
|
strcpy(name, names->name); |
|
return strlen(names->name); |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Get logical cluster information for UAC3 devices. |
|
*/ |
|
static int get_cluster_channels_v3(struct mixer_build *state, unsigned int cluster_id) |
|
{ |
|
struct uac3_cluster_header_descriptor c_header; |
|
int err; |
|
|
|
err = snd_usb_ctl_msg(state->chip->dev, |
|
usb_rcvctrlpipe(state->chip->dev, 0), |
|
UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, |
|
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
|
cluster_id, |
|
snd_usb_ctrl_intf(state->chip), |
|
&c_header, sizeof(c_header)); |
|
if (err < 0) |
|
goto error; |
|
if (err != sizeof(c_header)) { |
|
err = -EIO; |
|
goto error; |
|
} |
|
|
|
return c_header.bNrChannels; |
|
|
|
error: |
|
usb_audio_err(state->chip, "cannot request logical cluster ID: %d (err: %d)\n", cluster_id, err); |
|
return err; |
|
} |
|
|
|
/* |
|
* Get number of channels for a Mixer Unit. |
|
*/ |
|
static int uac_mixer_unit_get_channels(struct mixer_build *state, |
|
struct uac_mixer_unit_descriptor *desc) |
|
{ |
|
int mu_channels; |
|
|
|
switch (state->mixer->protocol) { |
|
case UAC_VERSION_1: |
|
case UAC_VERSION_2: |
|
default: |
|
if (desc->bLength < sizeof(*desc) + desc->bNrInPins + 1) |
|
return 0; /* no bmControls -> skip */ |
|
mu_channels = uac_mixer_unit_bNrChannels(desc); |
|
break; |
|
case UAC_VERSION_3: |
|
mu_channels = get_cluster_channels_v3(state, |
|
uac3_mixer_unit_wClusterDescrID(desc)); |
|
break; |
|
} |
|
|
|
return mu_channels; |
|
} |
|
|
|
/* |
|
* Parse Input Terminal Unit |
|
*/ |
|
static int __check_input_term(struct mixer_build *state, int id, |
|
struct usb_audio_term *term); |
|
|
|
static int parse_term_uac1_iterm_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac_input_terminal_descriptor *d = p1; |
|
|
|
term->type = le16_to_cpu(d->wTerminalType); |
|
term->channels = d->bNrChannels; |
|
term->chconfig = le16_to_cpu(d->wChannelConfig); |
|
term->name = d->iTerminal; |
|
return 0; |
|
} |
|
|
|
static int parse_term_uac2_iterm_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac2_input_terminal_descriptor *d = p1; |
|
int err; |
|
|
|
/* call recursively to verify the referenced clock entity */ |
|
err = __check_input_term(state, d->bCSourceID, term); |
|
if (err < 0) |
|
return err; |
|
|
|
/* save input term properties after recursion, |
|
* to ensure they are not overriden by the recursion calls |
|
*/ |
|
term->id = id; |
|
term->type = le16_to_cpu(d->wTerminalType); |
|
term->channels = d->bNrChannels; |
|
term->chconfig = le32_to_cpu(d->bmChannelConfig); |
|
term->name = d->iTerminal; |
|
return 0; |
|
} |
|
|
|
static int parse_term_uac3_iterm_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac3_input_terminal_descriptor *d = p1; |
|
int err; |
|
|
|
/* call recursively to verify the referenced clock entity */ |
|
err = __check_input_term(state, d->bCSourceID, term); |
|
if (err < 0) |
|
return err; |
|
|
|
/* save input term properties after recursion, |
|
* to ensure they are not overriden by the recursion calls |
|
*/ |
|
term->id = id; |
|
term->type = le16_to_cpu(d->wTerminalType); |
|
|
|
err = get_cluster_channels_v3(state, le16_to_cpu(d->wClusterDescrID)); |
|
if (err < 0) |
|
return err; |
|
term->channels = err; |
|
|
|
/* REVISIT: UAC3 IT doesn't have channels cfg */ |
|
term->chconfig = 0; |
|
|
|
term->name = le16_to_cpu(d->wTerminalDescrStr); |
|
return 0; |
|
} |
|
|
|
static int parse_term_mixer_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac_mixer_unit_descriptor *d = p1; |
|
int protocol = state->mixer->protocol; |
|
int err; |
|
|
|
err = uac_mixer_unit_get_channels(state, d); |
|
if (err <= 0) |
|
return err; |
|
|
|
term->type = UAC3_MIXER_UNIT << 16; /* virtual type */ |
|
term->channels = err; |
|
if (protocol != UAC_VERSION_3) { |
|
term->chconfig = uac_mixer_unit_wChannelConfig(d, protocol); |
|
term->name = uac_mixer_unit_iMixer(d); |
|
} |
|
return 0; |
|
} |
|
|
|
static int parse_term_selector_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac_selector_unit_descriptor *d = p1; |
|
int err; |
|
|
|
/* call recursively to retrieve the channel info */ |
|
err = __check_input_term(state, d->baSourceID[0], term); |
|
if (err < 0) |
|
return err; |
|
term->type = UAC3_SELECTOR_UNIT << 16; /* virtual type */ |
|
term->id = id; |
|
if (state->mixer->protocol != UAC_VERSION_3) |
|
term->name = uac_selector_unit_iSelector(d); |
|
return 0; |
|
} |
|
|
|
static int parse_term_proc_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id, int vtype) |
|
{ |
|
struct uac_processing_unit_descriptor *d = p1; |
|
int protocol = state->mixer->protocol; |
|
int err; |
|
|
|
if (d->bNrInPins) { |
|
/* call recursively to retrieve the channel info */ |
|
err = __check_input_term(state, d->baSourceID[0], term); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
term->type = vtype << 16; /* virtual type */ |
|
term->id = id; |
|
|
|
if (protocol == UAC_VERSION_3) |
|
return 0; |
|
|
|
if (!term->channels) { |
|
term->channels = uac_processing_unit_bNrChannels(d); |
|
term->chconfig = uac_processing_unit_wChannelConfig(d, protocol); |
|
} |
|
term->name = uac_processing_unit_iProcessing(d, protocol); |
|
return 0; |
|
} |
|
|
|
static int parse_term_effect_unit(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac2_effect_unit_descriptor *d = p1; |
|
int err; |
|
|
|
err = __check_input_term(state, d->bSourceID, term); |
|
if (err < 0) |
|
return err; |
|
term->type = UAC3_EFFECT_UNIT << 16; /* virtual type */ |
|
term->id = id; |
|
return 0; |
|
} |
|
|
|
static int parse_term_uac2_clock_source(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac_clock_source_descriptor *d = p1; |
|
|
|
term->type = UAC3_CLOCK_SOURCE << 16; /* virtual type */ |
|
term->id = id; |
|
term->name = d->iClockSource; |
|
return 0; |
|
} |
|
|
|
static int parse_term_uac3_clock_source(struct mixer_build *state, |
|
struct usb_audio_term *term, |
|
void *p1, int id) |
|
{ |
|
struct uac3_clock_source_descriptor *d = p1; |
|
|
|
term->type = UAC3_CLOCK_SOURCE << 16; /* virtual type */ |
|
term->id = id; |
|
term->name = le16_to_cpu(d->wClockSourceStr); |
|
return 0; |
|
} |
|
|
|
#define PTYPE(a, b) ((a) << 8 | (b)) |
|
|
|
/* |
|
* parse the source unit recursively until it reaches to a terminal |
|
* or a branched unit. |
|
*/ |
|
static int __check_input_term(struct mixer_build *state, int id, |
|
struct usb_audio_term *term) |
|
{ |
|
int protocol = state->mixer->protocol; |
|
void *p1; |
|
unsigned char *hdr; |
|
|
|
for (;;) { |
|
/* a loop in the terminal chain? */ |
|
if (test_and_set_bit(id, state->termbitmap)) |
|
return -EINVAL; |
|
|
|
p1 = find_audio_control_unit(state, id); |
|
if (!p1) |
|
break; |
|
if (!snd_usb_validate_audio_desc(p1, protocol)) |
|
break; /* bad descriptor */ |
|
|
|
hdr = p1; |
|
term->id = id; |
|
|
|
switch (PTYPE(protocol, hdr[2])) { |
|
case PTYPE(UAC_VERSION_1, UAC_FEATURE_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC_FEATURE_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_FEATURE_UNIT): { |
|
/* the header is the same for all versions */ |
|
struct uac_feature_unit_descriptor *d = p1; |
|
|
|
id = d->bSourceID; |
|
break; /* continue to parse */ |
|
} |
|
case PTYPE(UAC_VERSION_1, UAC_INPUT_TERMINAL): |
|
return parse_term_uac1_iterm_unit(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_2, UAC_INPUT_TERMINAL): |
|
return parse_term_uac2_iterm_unit(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_3, UAC_INPUT_TERMINAL): |
|
return parse_term_uac3_iterm_unit(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_1, UAC_MIXER_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC_MIXER_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_MIXER_UNIT): |
|
return parse_term_mixer_unit(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_1, UAC_SELECTOR_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC_SELECTOR_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SELECTOR): |
|
case PTYPE(UAC_VERSION_3, UAC3_SELECTOR_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SELECTOR): |
|
return parse_term_selector_unit(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_1, UAC1_PROCESSING_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC2_PROCESSING_UNIT_V2): |
|
case PTYPE(UAC_VERSION_3, UAC3_PROCESSING_UNIT): |
|
return parse_term_proc_unit(state, term, p1, id, |
|
UAC3_PROCESSING_UNIT); |
|
case PTYPE(UAC_VERSION_2, UAC2_EFFECT_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_EFFECT_UNIT): |
|
return parse_term_effect_unit(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_1, UAC1_EXTENSION_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC2_EXTENSION_UNIT_V2): |
|
case PTYPE(UAC_VERSION_3, UAC3_EXTENSION_UNIT): |
|
return parse_term_proc_unit(state, term, p1, id, |
|
UAC3_EXTENSION_UNIT); |
|
case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SOURCE): |
|
return parse_term_uac2_clock_source(state, term, p1, id); |
|
case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SOURCE): |
|
return parse_term_uac3_clock_source(state, term, p1, id); |
|
default: |
|
return -ENODEV; |
|
} |
|
} |
|
return -ENODEV; |
|
} |
|
|
|
|
|
static int check_input_term(struct mixer_build *state, int id, |
|
struct usb_audio_term *term) |
|
{ |
|
memset(term, 0, sizeof(*term)); |
|
memset(state->termbitmap, 0, sizeof(state->termbitmap)); |
|
return __check_input_term(state, id, term); |
|
} |
|
|
|
/* |
|
* Feature Unit |
|
*/ |
|
|
|
/* feature unit control information */ |
|
struct usb_feature_control_info { |
|
int control; |
|
const char *name; |
|
int type; /* data type for uac1 */ |
|
int type_uac2; /* data type for uac2 if different from uac1, else -1 */ |
|
}; |
|
|
|
static const struct usb_feature_control_info audio_feature_info[] = { |
|
{ UAC_FU_MUTE, "Mute", USB_MIXER_INV_BOOLEAN, -1 }, |
|
{ UAC_FU_VOLUME, "Volume", USB_MIXER_S16, -1 }, |
|
{ UAC_FU_BASS, "Tone Control - Bass", USB_MIXER_S8, -1 }, |
|
{ UAC_FU_MID, "Tone Control - Mid", USB_MIXER_S8, -1 }, |
|
{ UAC_FU_TREBLE, "Tone Control - Treble", USB_MIXER_S8, -1 }, |
|
{ UAC_FU_GRAPHIC_EQUALIZER, "Graphic Equalizer", USB_MIXER_S8, -1 }, /* FIXME: not implemented yet */ |
|
{ UAC_FU_AUTOMATIC_GAIN, "Auto Gain Control", USB_MIXER_BOOLEAN, -1 }, |
|
{ UAC_FU_DELAY, "Delay Control", USB_MIXER_U16, USB_MIXER_U32 }, |
|
{ UAC_FU_BASS_BOOST, "Bass Boost", USB_MIXER_BOOLEAN, -1 }, |
|
{ UAC_FU_LOUDNESS, "Loudness", USB_MIXER_BOOLEAN, -1 }, |
|
/* UAC2 specific */ |
|
{ UAC2_FU_INPUT_GAIN, "Input Gain Control", USB_MIXER_S16, -1 }, |
|
{ UAC2_FU_INPUT_GAIN_PAD, "Input Gain Pad Control", USB_MIXER_S16, -1 }, |
|
{ UAC2_FU_PHASE_INVERTER, "Phase Inverter Control", USB_MIXER_BOOLEAN, -1 }, |
|
}; |
|
|
|
static void usb_mixer_elem_info_free(struct usb_mixer_elem_info *cval) |
|
{ |
|
kfree(cval); |
|
} |
|
|
|
/* private_free callback */ |
|
void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl) |
|
{ |
|
usb_mixer_elem_info_free(kctl->private_data); |
|
kctl->private_data = NULL; |
|
} |
|
|
|
/* |
|
* interface to ALSA control for feature/mixer units |
|
*/ |
|
|
|
/* volume control quirks */ |
|
static void volume_control_quirks(struct usb_mixer_elem_info *cval, |
|
struct snd_kcontrol *kctl) |
|
{ |
|
struct snd_usb_audio *chip = cval->head.mixer->chip; |
|
switch (chip->usb_id) { |
|
case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
|
case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
|
if (strcmp(kctl->id.name, "Effect Duration") == 0) { |
|
cval->min = 0x0000; |
|
cval->max = 0xffff; |
|
cval->res = 0x00e6; |
|
break; |
|
} |
|
if (strcmp(kctl->id.name, "Effect Volume") == 0 || |
|
strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { |
|
cval->min = 0x00; |
|
cval->max = 0xff; |
|
break; |
|
} |
|
if (strstr(kctl->id.name, "Effect Return") != NULL) { |
|
cval->min = 0xb706; |
|
cval->max = 0xff7b; |
|
cval->res = 0x0073; |
|
break; |
|
} |
|
if ((strstr(kctl->id.name, "Playback Volume") != NULL) || |
|
(strstr(kctl->id.name, "Effect Send") != NULL)) { |
|
cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ |
|
cval->max = 0xfcfe; |
|
cval->res = 0x0073; |
|
} |
|
break; |
|
|
|
case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ |
|
case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ |
|
if (strcmp(kctl->id.name, "Effect Duration") == 0) { |
|
usb_audio_info(chip, |
|
"set quirk for FTU Effect Duration\n"); |
|
cval->min = 0x0000; |
|
cval->max = 0x7f00; |
|
cval->res = 0x0100; |
|
break; |
|
} |
|
if (strcmp(kctl->id.name, "Effect Volume") == 0 || |
|
strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { |
|
usb_audio_info(chip, |
|
"set quirks for FTU Effect Feedback/Volume\n"); |
|
cval->min = 0x00; |
|
cval->max = 0x7f; |
|
break; |
|
} |
|
break; |
|
|
|
case USB_ID(0x0d8c, 0x0103): |
|
if (!strcmp(kctl->id.name, "PCM Playback Volume")) { |
|
usb_audio_info(chip, |
|
"set volume quirk for CM102-A+/102S+\n"); |
|
cval->min = -256; |
|
} |
|
break; |
|
|
|
case USB_ID(0x0471, 0x0101): |
|
case USB_ID(0x0471, 0x0104): |
|
case USB_ID(0x0471, 0x0105): |
|
case USB_ID(0x0672, 0x1041): |
|
/* quirk for UDA1321/N101. |
|
* note that detection between firmware 2.1.1.7 (N101) |
|
* and later 2.1.1.21 is not very clear from datasheets. |
|
* I hope that the min value is -15360 for newer firmware --jk |
|
*/ |
|
if (!strcmp(kctl->id.name, "PCM Playback Volume") && |
|
cval->min == -15616) { |
|
usb_audio_info(chip, |
|
"set volume quirk for UDA1321/N101 chip\n"); |
|
cval->max = -256; |
|
} |
|
break; |
|
|
|
case USB_ID(0x046d, 0x09a4): |
|
if (!strcmp(kctl->id.name, "Mic Capture Volume")) { |
|
usb_audio_info(chip, |
|
"set volume quirk for QuickCam E3500\n"); |
|
cval->min = 6080; |
|
cval->max = 8768; |
|
cval->res = 192; |
|
} |
|
break; |
|
|
|
case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */ |
|
case USB_ID(0x046d, 0x0808): |
|
case USB_ID(0x046d, 0x0809): |
|
case USB_ID(0x046d, 0x0819): /* Logitech Webcam C210 */ |
|
case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */ |
|
case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ |
|
case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ |
|
case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */ |
|
case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */ |
|
case USB_ID(0x046d, 0x0991): |
|
case USB_ID(0x046d, 0x09a2): /* QuickCam Communicate Deluxe/S7500 */ |
|
/* Most audio usb devices lie about volume resolution. |
|
* Most Logitech webcams have res = 384. |
|
* Probably there is some logitech magic behind this number --fishor |
|
*/ |
|
if (!strcmp(kctl->id.name, "Mic Capture Volume")) { |
|
usb_audio_info(chip, |
|
"set resolution quirk: cval->res = 384\n"); |
|
cval->res = 384; |
|
} |
|
break; |
|
case USB_ID(0x0495, 0x3042): /* ESS Technology Asus USB DAC */ |
|
if ((strstr(kctl->id.name, "Playback Volume") != NULL) || |
|
strstr(kctl->id.name, "Capture Volume") != NULL) { |
|
cval->min >>= 8; |
|
cval->max = 0; |
|
cval->res = 1; |
|
} |
|
break; |
|
case USB_ID(0x1224, 0x2a25): /* Jieli Technology USB PHY 2.0 */ |
|
if (!strcmp(kctl->id.name, "Mic Capture Volume")) { |
|
usb_audio_info(chip, |
|
"set resolution quirk: cval->res = 16\n"); |
|
cval->res = 16; |
|
} |
|
break; |
|
} |
|
} |
|
|
|
/* forcibly initialize the current mixer value; if GET_CUR fails, set to |
|
* the minimum as default |
|
*/ |
|
static void init_cur_mix_raw(struct usb_mixer_elem_info *cval, int ch, int idx) |
|
{ |
|
int val, err; |
|
|
|
err = snd_usb_get_cur_mix_value(cval, ch, idx, &val); |
|
if (!err) |
|
return; |
|
if (!cval->head.mixer->ignore_ctl_error) |
|
usb_audio_warn(cval->head.mixer->chip, |
|
"%d:%d: failed to get current value for ch %d (%d)\n", |
|
cval->head.id, mixer_ctrl_intf(cval->head.mixer), |
|
ch, err); |
|
snd_usb_set_cur_mix_value(cval, ch, idx, cval->min); |
|
} |
|
|
|
/* |
|
* retrieve the minimum and maximum values for the specified control |
|
*/ |
|
static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, |
|
int default_min, struct snd_kcontrol *kctl) |
|
{ |
|
int i, idx; |
|
|
|
/* for failsafe */ |
|
cval->min = default_min; |
|
cval->max = cval->min + 1; |
|
cval->res = 1; |
|
cval->dBmin = cval->dBmax = 0; |
|
|
|
if (cval->val_type == USB_MIXER_BOOLEAN || |
|
cval->val_type == USB_MIXER_INV_BOOLEAN) { |
|
cval->initialized = 1; |
|
} else { |
|
int minchn = 0; |
|
if (cval->cmask) { |
|
for (i = 0; i < MAX_CHANNELS; i++) |
|
if (cval->cmask & (1 << i)) { |
|
minchn = i + 1; |
|
break; |
|
} |
|
} |
|
if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || |
|
get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { |
|
usb_audio_err(cval->head.mixer->chip, |
|
"%d:%d: cannot get min/max values for control %d (id %d)\n", |
|
cval->head.id, mixer_ctrl_intf(cval->head.mixer), |
|
cval->control, cval->head.id); |
|
return -EINVAL; |
|
} |
|
if (get_ctl_value(cval, UAC_GET_RES, |
|
(cval->control << 8) | minchn, |
|
&cval->res) < 0) { |
|
cval->res = 1; |
|
} else if (cval->head.mixer->protocol == UAC_VERSION_1) { |
|
int last_valid_res = cval->res; |
|
|
|
while (cval->res > 1) { |
|
if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, |
|
(cval->control << 8) | minchn, |
|
cval->res / 2) < 0) |
|
break; |
|
cval->res /= 2; |
|
} |
|
if (get_ctl_value(cval, UAC_GET_RES, |
|
(cval->control << 8) | minchn, &cval->res) < 0) |
|
cval->res = last_valid_res; |
|
} |
|
if (cval->res == 0) |
|
cval->res = 1; |
|
|
|
/* Additional checks for the proper resolution |
|
* |
|
* Some devices report smaller resolutions than actually |
|
* reacting. They don't return errors but simply clip |
|
* to the lower aligned value. |
|
*/ |
|
if (cval->min + cval->res < cval->max) { |
|
int last_valid_res = cval->res; |
|
int saved, test, check; |
|
if (get_cur_mix_raw(cval, minchn, &saved) < 0) |
|
goto no_res_check; |
|
for (;;) { |
|
test = saved; |
|
if (test < cval->max) |
|
test += cval->res; |
|
else |
|
test -= cval->res; |
|
if (test < cval->min || test > cval->max || |
|
snd_usb_set_cur_mix_value(cval, minchn, 0, test) || |
|
get_cur_mix_raw(cval, minchn, &check)) { |
|
cval->res = last_valid_res; |
|
break; |
|
} |
|
if (test == check) |
|
break; |
|
cval->res *= 2; |
|
} |
|
snd_usb_set_cur_mix_value(cval, minchn, 0, saved); |
|
} |
|
|
|
no_res_check: |
|
cval->initialized = 1; |
|
} |
|
|
|
if (kctl) |
|
volume_control_quirks(cval, kctl); |
|
|
|
/* USB descriptions contain the dB scale in 1/256 dB unit |
|
* while ALSA TLV contains in 1/100 dB unit |
|
*/ |
|
cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; |
|
cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; |
|
if (cval->dBmin > cval->dBmax) { |
|
/* something is wrong; assume it's either from/to 0dB */ |
|
if (cval->dBmin < 0) |
|
cval->dBmax = 0; |
|
else if (cval->dBmin > 0) |
|
cval->dBmin = 0; |
|
if (cval->dBmin > cval->dBmax) { |
|
/* totally crap, return an error */ |
|
return -EINVAL; |
|
} |
|
} else { |
|
/* if the max volume is too low, it's likely a bogus range; |
|
* here we use -96dB as the threshold |
|
*/ |
|
if (cval->dBmax <= -9600) { |
|
usb_audio_info(cval->head.mixer->chip, |
|
"%d:%d: bogus dB values (%d/%d), disabling dB reporting\n", |
|
cval->head.id, mixer_ctrl_intf(cval->head.mixer), |
|
cval->dBmin, cval->dBmax); |
|
cval->dBmin = cval->dBmax = 0; |
|
} |
|
} |
|
|
|
/* initialize all elements */ |
|
if (!cval->cmask) { |
|
init_cur_mix_raw(cval, 0, 0); |
|
} else { |
|
idx = 0; |
|
for (i = 0; i < MAX_CHANNELS; i++) { |
|
if (cval->cmask & (1 << i)) { |
|
init_cur_mix_raw(cval, i + 1, idx); |
|
idx++; |
|
} |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) |
|
|
|
/* get a feature/mixer unit info */ |
|
static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_info *uinfo) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
|
|
if (cval->val_type == USB_MIXER_BOOLEAN || |
|
cval->val_type == USB_MIXER_INV_BOOLEAN) |
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
|
else |
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
|
uinfo->count = cval->channels; |
|
if (cval->val_type == USB_MIXER_BOOLEAN || |
|
cval->val_type == USB_MIXER_INV_BOOLEAN) { |
|
uinfo->value.integer.min = 0; |
|
uinfo->value.integer.max = 1; |
|
} else { |
|
if (!cval->initialized) { |
|
get_min_max_with_quirks(cval, 0, kcontrol); |
|
if (cval->initialized && cval->dBmin >= cval->dBmax) { |
|
kcontrol->vd[0].access &= |
|
~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | |
|
SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); |
|
snd_ctl_notify(cval->head.mixer->chip->card, |
|
SNDRV_CTL_EVENT_MASK_INFO, |
|
&kcontrol->id); |
|
} |
|
} |
|
uinfo->value.integer.min = 0; |
|
uinfo->value.integer.max = |
|
DIV_ROUND_UP(cval->max - cval->min, cval->res); |
|
} |
|
return 0; |
|
} |
|
|
|
/* get the current value from feature/mixer unit */ |
|
static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int c, cnt, val, err; |
|
|
|
ucontrol->value.integer.value[0] = cval->min; |
|
if (cval->cmask) { |
|
cnt = 0; |
|
for (c = 0; c < MAX_CHANNELS; c++) { |
|
if (!(cval->cmask & (1 << c))) |
|
continue; |
|
err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = get_relative_value(cval, val); |
|
ucontrol->value.integer.value[cnt] = val; |
|
cnt++; |
|
} |
|
return 0; |
|
} else { |
|
/* master channel */ |
|
err = snd_usb_get_cur_mix_value(cval, 0, 0, &val); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = get_relative_value(cval, val); |
|
ucontrol->value.integer.value[0] = val; |
|
} |
|
return 0; |
|
} |
|
|
|
/* put the current value to feature/mixer unit */ |
|
static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int c, cnt, val, oval, err; |
|
int changed = 0; |
|
|
|
if (cval->cmask) { |
|
cnt = 0; |
|
for (c = 0; c < MAX_CHANNELS; c++) { |
|
if (!(cval->cmask & (1 << c))) |
|
continue; |
|
err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = ucontrol->value.integer.value[cnt]; |
|
val = get_abs_value(cval, val); |
|
if (oval != val) { |
|
snd_usb_set_cur_mix_value(cval, c + 1, cnt, val); |
|
changed = 1; |
|
} |
|
cnt++; |
|
} |
|
} else { |
|
/* master channel */ |
|
err = snd_usb_get_cur_mix_value(cval, 0, 0, &oval); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = ucontrol->value.integer.value[0]; |
|
val = get_abs_value(cval, val); |
|
if (val != oval) { |
|
snd_usb_set_cur_mix_value(cval, 0, 0, val); |
|
changed = 1; |
|
} |
|
} |
|
return changed; |
|
} |
|
|
|
/* get the boolean value from the master channel of a UAC control */ |
|
static int mixer_ctl_master_bool_get(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int val, err; |
|
|
|
err = snd_usb_get_cur_mix_value(cval, 0, 0, &val); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = (val != 0); |
|
ucontrol->value.integer.value[0] = val; |
|
return 0; |
|
} |
|
|
|
static int get_connector_value(struct usb_mixer_elem_info *cval, |
|
char *name, int *val) |
|
{ |
|
struct snd_usb_audio *chip = cval->head.mixer->chip; |
|
int idx = 0, validx, ret; |
|
|
|
validx = cval->control << 8 | 0; |
|
|
|
ret = snd_usb_lock_shutdown(chip) ? -EIO : 0; |
|
if (ret) |
|
goto error; |
|
|
|
idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8); |
|
if (cval->head.mixer->protocol == UAC_VERSION_2) { |
|
struct uac2_connectors_ctl_blk uac2_conn; |
|
|
|
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR, |
|
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
|
validx, idx, &uac2_conn, sizeof(uac2_conn)); |
|
if (val) |
|
*val = !!uac2_conn.bNrChannels; |
|
} else { /* UAC_VERSION_3 */ |
|
struct uac3_insertion_ctl_blk uac3_conn; |
|
|
|
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR, |
|
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
|
validx, idx, &uac3_conn, sizeof(uac3_conn)); |
|
if (val) |
|
*val = !!uac3_conn.bmConInserted; |
|
} |
|
|
|
snd_usb_unlock_shutdown(chip); |
|
|
|
if (ret < 0) { |
|
if (name && strstr(name, "Speaker")) { |
|
if (val) |
|
*val = 1; |
|
return 0; |
|
} |
|
error: |
|
usb_audio_err(chip, |
|
"cannot get connectors status: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
|
UAC_GET_CUR, validx, idx, cval->val_type); |
|
|
|
if (val) |
|
*val = 0; |
|
|
|
return filter_error(cval, ret); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* get the connectors status and report it as boolean type */ |
|
static int mixer_ctl_connector_get(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int ret, val; |
|
|
|
ret = get_connector_value(cval, kcontrol->id.name, &val); |
|
|
|
if (ret < 0) |
|
return ret; |
|
|
|
ucontrol->value.integer.value[0] = val; |
|
return 0; |
|
} |
|
|
|
static const struct snd_kcontrol_new usb_feature_unit_ctl = { |
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
|
.name = "", /* will be filled later manually */ |
|
.info = mixer_ctl_feature_info, |
|
.get = mixer_ctl_feature_get, |
|
.put = mixer_ctl_feature_put, |
|
}; |
|
|
|
/* the read-only variant */ |
|
static const struct snd_kcontrol_new usb_feature_unit_ctl_ro = { |
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
|
.name = "", /* will be filled later manually */ |
|
.info = mixer_ctl_feature_info, |
|
.get = mixer_ctl_feature_get, |
|
.put = NULL, |
|
}; |
|
|
|
/* |
|
* A control which shows the boolean value from reading a UAC control on |
|
* the master channel. |
|
*/ |
|
static const struct snd_kcontrol_new usb_bool_master_control_ctl_ro = { |
|
.iface = SNDRV_CTL_ELEM_IFACE_CARD, |
|
.name = "", /* will be filled later manually */ |
|
.access = SNDRV_CTL_ELEM_ACCESS_READ, |
|
.info = snd_ctl_boolean_mono_info, |
|
.get = mixer_ctl_master_bool_get, |
|
.put = NULL, |
|
}; |
|
|
|
static const struct snd_kcontrol_new usb_connector_ctl_ro = { |
|
.iface = SNDRV_CTL_ELEM_IFACE_CARD, |
|
.name = "", /* will be filled later manually */ |
|
.access = SNDRV_CTL_ELEM_ACCESS_READ, |
|
.info = snd_ctl_boolean_mono_info, |
|
.get = mixer_ctl_connector_get, |
|
.put = NULL, |
|
}; |
|
|
|
/* |
|
* This symbol is exported in order to allow the mixer quirks to |
|
* hook up to the standard feature unit control mechanism |
|
*/ |
|
const struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; |
|
|
|
/* |
|
* build a feature control |
|
*/ |
|
static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) |
|
{ |
|
return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); |
|
} |
|
|
|
/* |
|
* A lot of headsets/headphones have a "Speaker" mixer. Make sure we |
|
* rename it to "Headphone". We determine if something is a headphone |
|
* similar to how udev determines form factor. |
|
*/ |
|
static void check_no_speaker_on_headset(struct snd_kcontrol *kctl, |
|
struct snd_card *card) |
|
{ |
|
static const char * const names_to_check[] = { |
|
"Headset", "headset", "Headphone", "headphone", NULL}; |
|
const char * const *s; |
|
bool found = false; |
|
|
|
if (strcmp("Speaker", kctl->id.name)) |
|
return; |
|
|
|
for (s = names_to_check; *s; s++) |
|
if (strstr(card->shortname, *s)) { |
|
found = true; |
|
break; |
|
} |
|
|
|
if (!found) |
|
return; |
|
|
|
snd_ctl_rename(card, kctl, "Headphone"); |
|
} |
|
|
|
static const struct usb_feature_control_info *get_feature_control_info(int control) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(audio_feature_info); ++i) { |
|
if (audio_feature_info[i].control == control) |
|
return &audio_feature_info[i]; |
|
} |
|
return NULL; |
|
} |
|
|
|
static void __build_feature_ctl(struct usb_mixer_interface *mixer, |
|
const struct usbmix_name_map *imap, |
|
unsigned int ctl_mask, int control, |
|
struct usb_audio_term *iterm, |
|
struct usb_audio_term *oterm, |
|
int unitid, int nameid, int readonly_mask) |
|
{ |
|
const struct usb_feature_control_info *ctl_info; |
|
unsigned int len = 0; |
|
int mapped_name = 0; |
|
struct snd_kcontrol *kctl; |
|
struct usb_mixer_elem_info *cval; |
|
const struct usbmix_name_map *map; |
|
unsigned int range; |
|
|
|
if (control == UAC_FU_GRAPHIC_EQUALIZER) { |
|
/* FIXME: not supported yet */ |
|
return; |
|
} |
|
|
|
map = find_map(imap, unitid, control); |
|
if (check_ignored_ctl(map)) |
|
return; |
|
|
|
cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
|
if (!cval) |
|
return; |
|
snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid); |
|
cval->control = control; |
|
cval->cmask = ctl_mask; |
|
|
|
ctl_info = get_feature_control_info(control); |
|
if (!ctl_info) { |
|
usb_mixer_elem_info_free(cval); |
|
return; |
|
} |
|
if (mixer->protocol == UAC_VERSION_1) |
|
cval->val_type = ctl_info->type; |
|
else /* UAC_VERSION_2 */ |
|
cval->val_type = ctl_info->type_uac2 >= 0 ? |
|
ctl_info->type_uac2 : ctl_info->type; |
|
|
|
if (ctl_mask == 0) { |
|
cval->channels = 1; /* master channel */ |
|
cval->master_readonly = readonly_mask; |
|
} else { |
|
int i, c = 0; |
|
for (i = 0; i < 16; i++) |
|
if (ctl_mask & (1 << i)) |
|
c++; |
|
cval->channels = c; |
|
cval->ch_readonly = readonly_mask; |
|
} |
|
|
|
/* |
|
* If all channels in the mask are marked read-only, make the control |
|
* read-only. snd_usb_set_cur_mix_value() will check the mask again and won't |
|
* issue write commands to read-only channels. |
|
*/ |
|
if (cval->channels == readonly_mask) |
|
kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); |
|
else |
|
kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); |
|
|
|
if (!kctl) { |
|
usb_audio_err(mixer->chip, "cannot malloc kcontrol\n"); |
|
usb_mixer_elem_info_free(cval); |
|
return; |
|
} |
|
kctl->private_free = snd_usb_mixer_elem_free; |
|
|
|
len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
|
mapped_name = len != 0; |
|
if (!len && nameid) |
|
len = snd_usb_copy_string_desc(mixer->chip, nameid, |
|
kctl->id.name, sizeof(kctl->id.name)); |
|
|
|
switch (control) { |
|
case UAC_FU_MUTE: |
|
case UAC_FU_VOLUME: |
|
/* |
|
* determine the control name. the rule is: |
|
* - if a name id is given in descriptor, use it. |
|
* - if the connected input can be determined, then use the name |
|
* of terminal type. |
|
* - if the connected output can be determined, use it. |
|
* - otherwise, anonymous name. |
|
*/ |
|
if (!len) { |
|
if (iterm) |
|
len = get_term_name(mixer->chip, iterm, |
|
kctl->id.name, |
|
sizeof(kctl->id.name), 1); |
|
if (!len && oterm) |
|
len = get_term_name(mixer->chip, oterm, |
|
kctl->id.name, |
|
sizeof(kctl->id.name), 1); |
|
if (!len) |
|
snprintf(kctl->id.name, sizeof(kctl->id.name), |
|
"Feature %d", unitid); |
|
} |
|
|
|
if (!mapped_name) |
|
check_no_speaker_on_headset(kctl, mixer->chip->card); |
|
|
|
/* |
|
* determine the stream direction: |
|
* if the connected output is USB stream, then it's likely a |
|
* capture stream. otherwise it should be playback (hopefully :) |
|
*/ |
|
if (!mapped_name && oterm && !(oterm->type >> 16)) { |
|
if ((oterm->type & 0xff00) == 0x0100) |
|
append_ctl_name(kctl, " Capture"); |
|
else |
|
append_ctl_name(kctl, " Playback"); |
|
} |
|
append_ctl_name(kctl, control == UAC_FU_MUTE ? |
|
" Switch" : " Volume"); |
|
break; |
|
default: |
|
if (!len) |
|
strscpy(kctl->id.name, audio_feature_info[control-1].name, |
|
sizeof(kctl->id.name)); |
|
break; |
|
} |
|
|
|
/* get min/max values */ |
|
get_min_max_with_quirks(cval, 0, kctl); |
|
|
|
/* skip a bogus volume range */ |
|
if (cval->max <= cval->min) { |
|
usb_audio_dbg(mixer->chip, |
|
"[%d] FU [%s] skipped due to invalid volume\n", |
|
cval->head.id, kctl->id.name); |
|
snd_ctl_free_one(kctl); |
|
return; |
|
} |
|
|
|
|
|
if (control == UAC_FU_VOLUME) { |
|
check_mapped_dB(map, cval); |
|
if (cval->dBmin < cval->dBmax || !cval->initialized) { |
|
kctl->tlv.c = snd_usb_mixer_vol_tlv; |
|
kctl->vd[0].access |= |
|
SNDRV_CTL_ELEM_ACCESS_TLV_READ | |
|
SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; |
|
} |
|
} |
|
|
|
snd_usb_mixer_fu_apply_quirk(mixer, cval, unitid, kctl); |
|
|
|
range = (cval->max - cval->min) / cval->res; |
|
/* |
|
* Are there devices with volume range more than 255? I use a bit more |
|
* to be sure. 384 is a resolution magic number found on Logitech |
|
* devices. It will definitively catch all buggy Logitech devices. |
|
*/ |
|
if (range > 384) { |
|
usb_audio_warn(mixer->chip, |
|
"Warning! Unlikely big volume range (=%u), cval->res is probably wrong.", |
|
range); |
|
usb_audio_warn(mixer->chip, |
|
"[%d] FU [%s] ch = %d, val = %d/%d/%d", |
|
cval->head.id, kctl->id.name, cval->channels, |
|
cval->min, cval->max, cval->res); |
|
} |
|
|
|
usb_audio_dbg(mixer->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", |
|
cval->head.id, kctl->id.name, cval->channels, |
|
cval->min, cval->max, cval->res); |
|
snd_usb_mixer_add_control(&cval->head, kctl); |
|
} |
|
|
|
static void build_feature_ctl(struct mixer_build *state, void *raw_desc, |
|
unsigned int ctl_mask, int control, |
|
struct usb_audio_term *iterm, int unitid, |
|
int readonly_mask) |
|
{ |
|
struct uac_feature_unit_descriptor *desc = raw_desc; |
|
int nameid = uac_feature_unit_iFeature(desc); |
|
|
|
__build_feature_ctl(state->mixer, state->map, ctl_mask, control, |
|
iterm, &state->oterm, unitid, nameid, readonly_mask); |
|
} |
|
|
|
static void build_feature_ctl_badd(struct usb_mixer_interface *mixer, |
|
unsigned int ctl_mask, int control, int unitid, |
|
const struct usbmix_name_map *badd_map) |
|
{ |
|
__build_feature_ctl(mixer, badd_map, ctl_mask, control, |
|
NULL, NULL, unitid, 0, 0); |
|
} |
|
|
|
static void get_connector_control_name(struct usb_mixer_interface *mixer, |
|
struct usb_audio_term *term, |
|
bool is_input, char *name, int name_size) |
|
{ |
|
int name_len = get_term_name(mixer->chip, term, name, name_size, 0); |
|
|
|
if (name_len == 0) |
|
strscpy(name, "Unknown", name_size); |
|
|
|
/* |
|
* sound/core/ctljack.c has a convention of naming jack controls |
|
* by ending in " Jack". Make it slightly more useful by |
|
* indicating Input or Output after the terminal name. |
|
*/ |
|
if (is_input) |
|
strlcat(name, " - Input Jack", name_size); |
|
else |
|
strlcat(name, " - Output Jack", name_size); |
|
} |
|
|
|
/* get connector value to "wake up" the USB audio */ |
|
static int connector_mixer_resume(struct usb_mixer_elem_list *list) |
|
{ |
|
struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list); |
|
|
|
get_connector_value(cval, NULL, NULL); |
|
return 0; |
|
} |
|
|
|
/* Build a mixer control for a UAC connector control (jack-detect) */ |
|
static void build_connector_control(struct usb_mixer_interface *mixer, |
|
const struct usbmix_name_map *imap, |
|
struct usb_audio_term *term, bool is_input) |
|
{ |
|
struct snd_kcontrol *kctl; |
|
struct usb_mixer_elem_info *cval; |
|
const struct usbmix_name_map *map; |
|
|
|
map = find_map(imap, term->id, 0); |
|
if (check_ignored_ctl(map)) |
|
return; |
|
|
|
cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
|
if (!cval) |
|
return; |
|
snd_usb_mixer_elem_init_std(&cval->head, mixer, term->id); |
|
|
|
/* set up a specific resume callback */ |
|
cval->head.resume = connector_mixer_resume; |
|
|
|
/* |
|
* UAC2: The first byte from reading the UAC2_TE_CONNECTOR control returns the |
|
* number of channels connected. |
|
* |
|
* UAC3: The first byte specifies size of bitmap for the inserted controls. The |
|
* following byte(s) specifies which connectors are inserted. |
|
* |
|
* This boolean ctl will simply report if any channels are connected |
|
* or not. |
|
*/ |
|
if (mixer->protocol == UAC_VERSION_2) |
|
cval->control = UAC2_TE_CONNECTOR; |
|
else /* UAC_VERSION_3 */ |
|
cval->control = UAC3_TE_INSERTION; |
|
|
|
cval->val_type = USB_MIXER_BOOLEAN; |
|
cval->channels = 1; /* report true if any channel is connected */ |
|
cval->min = 0; |
|
cval->max = 1; |
|
kctl = snd_ctl_new1(&usb_connector_ctl_ro, cval); |
|
if (!kctl) { |
|
usb_audio_err(mixer->chip, "cannot malloc kcontrol\n"); |
|
usb_mixer_elem_info_free(cval); |
|
return; |
|
} |
|
|
|
if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) |
|
strlcat(kctl->id.name, " Jack", sizeof(kctl->id.name)); |
|
else |
|
get_connector_control_name(mixer, term, is_input, kctl->id.name, |
|
sizeof(kctl->id.name)); |
|
kctl->private_free = snd_usb_mixer_elem_free; |
|
snd_usb_mixer_add_control(&cval->head, kctl); |
|
} |
|
|
|
static int parse_clock_source_unit(struct mixer_build *state, int unitid, |
|
void *_ftr) |
|
{ |
|
struct uac_clock_source_descriptor *hdr = _ftr; |
|
struct usb_mixer_elem_info *cval; |
|
struct snd_kcontrol *kctl; |
|
char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; |
|
int ret; |
|
|
|
if (state->mixer->protocol != UAC_VERSION_2) |
|
return -EINVAL; |
|
|
|
/* |
|
* The only property of this unit we are interested in is the |
|
* clock source validity. If that isn't readable, just bail out. |
|
*/ |
|
if (!uac_v2v3_control_is_readable(hdr->bmControls, |
|
UAC2_CS_CONTROL_CLOCK_VALID)) |
|
return 0; |
|
|
|
cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
|
if (!cval) |
|
return -ENOMEM; |
|
|
|
snd_usb_mixer_elem_init_std(&cval->head, state->mixer, hdr->bClockID); |
|
|
|
cval->min = 0; |
|
cval->max = 1; |
|
cval->channels = 1; |
|
cval->val_type = USB_MIXER_BOOLEAN; |
|
cval->control = UAC2_CS_CONTROL_CLOCK_VALID; |
|
|
|
cval->master_readonly = 1; |
|
/* From UAC2 5.2.5.1.2 "Only the get request is supported." */ |
|
kctl = snd_ctl_new1(&usb_bool_master_control_ctl_ro, cval); |
|
|
|
if (!kctl) { |
|
usb_mixer_elem_info_free(cval); |
|
return -ENOMEM; |
|
} |
|
|
|
kctl->private_free = snd_usb_mixer_elem_free; |
|
ret = snd_usb_copy_string_desc(state->chip, hdr->iClockSource, |
|
name, sizeof(name)); |
|
if (ret > 0) |
|
snprintf(kctl->id.name, sizeof(kctl->id.name), |
|
"%s Validity", name); |
|
else |
|
snprintf(kctl->id.name, sizeof(kctl->id.name), |
|
"Clock Source %d Validity", hdr->bClockID); |
|
|
|
return snd_usb_mixer_add_control(&cval->head, kctl); |
|
} |
|
|
|
/* |
|
* parse a feature unit |
|
* |
|
* most of controls are defined here. |
|
*/ |
|
static int parse_audio_feature_unit(struct mixer_build *state, int unitid, |
|
void *_ftr) |
|
{ |
|
int channels, i, j; |
|
struct usb_audio_term iterm; |
|
unsigned int master_bits; |
|
int err, csize; |
|
struct uac_feature_unit_descriptor *hdr = _ftr; |
|
__u8 *bmaControls; |
|
|
|
if (state->mixer->protocol == UAC_VERSION_1) { |
|
csize = hdr->bControlSize; |
|
channels = (hdr->bLength - 7) / csize - 1; |
|
bmaControls = hdr->bmaControls; |
|
} else if (state->mixer->protocol == UAC_VERSION_2) { |
|
struct uac2_feature_unit_descriptor *ftr = _ftr; |
|
csize = 4; |
|
channels = (hdr->bLength - 6) / 4 - 1; |
|
bmaControls = ftr->bmaControls; |
|
} else { /* UAC_VERSION_3 */ |
|
struct uac3_feature_unit_descriptor *ftr = _ftr; |
|
|
|
csize = 4; |
|
channels = (ftr->bLength - 7) / 4 - 1; |
|
bmaControls = ftr->bmaControls; |
|
} |
|
|
|
/* parse the source unit */ |
|
err = parse_audio_unit(state, hdr->bSourceID); |
|
if (err < 0) |
|
return err; |
|
|
|
/* determine the input source type and name */ |
|
err = check_input_term(state, hdr->bSourceID, &iterm); |
|
if (err < 0) |
|
return err; |
|
|
|
master_bits = snd_usb_combine_bytes(bmaControls, csize); |
|
/* master configuration quirks */ |
|
switch (state->chip->usb_id) { |
|
case USB_ID(0x08bb, 0x2702): |
|
usb_audio_info(state->chip, |
|
"usbmixer: master volume quirk for PCM2702 chip\n"); |
|
/* disable non-functional volume control */ |
|
master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); |
|
break; |
|
case USB_ID(0x1130, 0xf211): |
|
usb_audio_info(state->chip, |
|
"usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); |
|
/* disable non-functional volume control */ |
|
channels = 0; |
|
break; |
|
|
|
} |
|
|
|
if (state->mixer->protocol == UAC_VERSION_1) { |
|
/* check all control types */ |
|
for (i = 0; i < 10; i++) { |
|
unsigned int ch_bits = 0; |
|
int control = audio_feature_info[i].control; |
|
|
|
for (j = 0; j < channels; j++) { |
|
unsigned int mask; |
|
|
|
mask = snd_usb_combine_bytes(bmaControls + |
|
csize * (j+1), csize); |
|
if (mask & (1 << i)) |
|
ch_bits |= (1 << j); |
|
} |
|
/* audio class v1 controls are never read-only */ |
|
|
|
/* |
|
* The first channel must be set |
|
* (for ease of programming). |
|
*/ |
|
if (ch_bits & 1) |
|
build_feature_ctl(state, _ftr, ch_bits, control, |
|
&iterm, unitid, 0); |
|
if (master_bits & (1 << i)) |
|
build_feature_ctl(state, _ftr, 0, control, |
|
&iterm, unitid, 0); |
|
} |
|
} else { /* UAC_VERSION_2/3 */ |
|
for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { |
|
unsigned int ch_bits = 0; |
|
unsigned int ch_read_only = 0; |
|
int control = audio_feature_info[i].control; |
|
|
|
for (j = 0; j < channels; j++) { |
|
unsigned int mask; |
|
|
|
mask = snd_usb_combine_bytes(bmaControls + |
|
csize * (j+1), csize); |
|
if (uac_v2v3_control_is_readable(mask, control)) { |
|
ch_bits |= (1 << j); |
|
if (!uac_v2v3_control_is_writeable(mask, control)) |
|
ch_read_only |= (1 << j); |
|
} |
|
} |
|
|
|
/* |
|
* NOTE: build_feature_ctl() will mark the control |
|
* read-only if all channels are marked read-only in |
|
* the descriptors. Otherwise, the control will be |
|
* reported as writeable, but the driver will not |
|
* actually issue a write command for read-only |
|
* channels. |
|
*/ |
|
|
|
/* |
|
* The first channel must be set |
|
* (for ease of programming). |
|
*/ |
|
if (ch_bits & 1) |
|
build_feature_ctl(state, _ftr, ch_bits, control, |
|
&iterm, unitid, ch_read_only); |
|
if (uac_v2v3_control_is_readable(master_bits, control)) |
|
build_feature_ctl(state, _ftr, 0, control, |
|
&iterm, unitid, |
|
!uac_v2v3_control_is_writeable(master_bits, |
|
control)); |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Mixer Unit |
|
*/ |
|
|
|
/* check whether the given in/out overflows bmMixerControls matrix */ |
|
static bool mixer_bitmap_overflow(struct uac_mixer_unit_descriptor *desc, |
|
int protocol, int num_ins, int num_outs) |
|
{ |
|
u8 *hdr = (u8 *)desc; |
|
u8 *c = uac_mixer_unit_bmControls(desc, protocol); |
|
size_t rest; /* remaining bytes after bmMixerControls */ |
|
|
|
switch (protocol) { |
|
case UAC_VERSION_1: |
|
default: |
|
rest = 1; /* iMixer */ |
|
break; |
|
case UAC_VERSION_2: |
|
rest = 2; /* bmControls + iMixer */ |
|
break; |
|
case UAC_VERSION_3: |
|
rest = 6; /* bmControls + wMixerDescrStr */ |
|
break; |
|
} |
|
|
|
/* overflow? */ |
|
return c + (num_ins * num_outs + 7) / 8 + rest > hdr + hdr[0]; |
|
} |
|
|
|
/* |
|
* build a mixer unit control |
|
* |
|
* the callbacks are identical with feature unit. |
|
* input channel number (zero based) is given in control field instead. |
|
*/ |
|
static void build_mixer_unit_ctl(struct mixer_build *state, |
|
struct uac_mixer_unit_descriptor *desc, |
|
int in_pin, int in_ch, int num_outs, |
|
int unitid, struct usb_audio_term *iterm) |
|
{ |
|
struct usb_mixer_elem_info *cval; |
|
unsigned int i, len; |
|
struct snd_kcontrol *kctl; |
|
const struct usbmix_name_map *map; |
|
|
|
map = find_map(state->map, unitid, 0); |
|
if (check_ignored_ctl(map)) |
|
return; |
|
|
|
cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
|
if (!cval) |
|
return; |
|
|
|
snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); |
|
cval->control = in_ch + 1; /* based on 1 */ |
|
cval->val_type = USB_MIXER_S16; |
|
for (i = 0; i < num_outs; i++) { |
|
__u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol); |
|
|
|
if (check_matrix_bitmap(c, in_ch, i, num_outs)) { |
|
cval->cmask |= (1 << i); |
|
cval->channels++; |
|
} |
|
} |
|
|
|
/* get min/max values */ |
|
get_min_max(cval, 0); |
|
|
|
kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); |
|
if (!kctl) { |
|
usb_audio_err(state->chip, "cannot malloc kcontrol\n"); |
|
usb_mixer_elem_info_free(cval); |
|
return; |
|
} |
|
kctl->private_free = snd_usb_mixer_elem_free; |
|
|
|
len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
|
if (!len) |
|
len = get_term_name(state->chip, iterm, kctl->id.name, |
|
sizeof(kctl->id.name), 0); |
|
if (!len) |
|
len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); |
|
append_ctl_name(kctl, " Volume"); |
|
|
|
usb_audio_dbg(state->chip, "[%d] MU [%s] ch = %d, val = %d/%d\n", |
|
cval->head.id, kctl->id.name, cval->channels, cval->min, cval->max); |
|
snd_usb_mixer_add_control(&cval->head, kctl); |
|
} |
|
|
|
static int parse_audio_input_terminal(struct mixer_build *state, int unitid, |
|
void *raw_desc) |
|
{ |
|
struct usb_audio_term iterm; |
|
unsigned int control, bmctls, term_id; |
|
|
|
if (state->mixer->protocol == UAC_VERSION_2) { |
|
struct uac2_input_terminal_descriptor *d_v2 = raw_desc; |
|
control = UAC2_TE_CONNECTOR; |
|
term_id = d_v2->bTerminalID; |
|
bmctls = le16_to_cpu(d_v2->bmControls); |
|
} else if (state->mixer->protocol == UAC_VERSION_3) { |
|
struct uac3_input_terminal_descriptor *d_v3 = raw_desc; |
|
control = UAC3_TE_INSERTION; |
|
term_id = d_v3->bTerminalID; |
|
bmctls = le32_to_cpu(d_v3->bmControls); |
|
} else { |
|
return 0; /* UAC1. No Insertion control */ |
|
} |
|
|
|
check_input_term(state, term_id, &iterm); |
|
|
|
/* Check for jack detection. */ |
|
if ((iterm.type & 0xff00) != 0x0100 && |
|
uac_v2v3_control_is_readable(bmctls, control)) |
|
build_connector_control(state->mixer, state->map, &iterm, true); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* parse a mixer unit |
|
*/ |
|
static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, |
|
void *raw_desc) |
|
{ |
|
struct uac_mixer_unit_descriptor *desc = raw_desc; |
|
struct usb_audio_term iterm; |
|
int input_pins, num_ins, num_outs; |
|
int pin, ich, err; |
|
|
|
err = uac_mixer_unit_get_channels(state, desc); |
|
if (err < 0) { |
|
usb_audio_err(state->chip, |
|
"invalid MIXER UNIT descriptor %d\n", |
|
unitid); |
|
return err; |
|
} |
|
|
|
num_outs = err; |
|
input_pins = desc->bNrInPins; |
|
|
|
num_ins = 0; |
|
ich = 0; |
|
for (pin = 0; pin < input_pins; pin++) { |
|
err = parse_audio_unit(state, desc->baSourceID[pin]); |
|
if (err < 0) |
|
continue; |
|
/* no bmControls field (e.g. Maya44) -> ignore */ |
|
if (!num_outs) |
|
continue; |
|
err = check_input_term(state, desc->baSourceID[pin], &iterm); |
|
if (err < 0) |
|
return err; |
|
num_ins += iterm.channels; |
|
if (mixer_bitmap_overflow(desc, state->mixer->protocol, |
|
num_ins, num_outs)) |
|
break; |
|
for (; ich < num_ins; ich++) { |
|
int och, ich_has_controls = 0; |
|
|
|
for (och = 0; och < num_outs; och++) { |
|
__u8 *c = uac_mixer_unit_bmControls(desc, |
|
state->mixer->protocol); |
|
|
|
if (check_matrix_bitmap(c, ich, och, num_outs)) { |
|
ich_has_controls = 1; |
|
break; |
|
} |
|
} |
|
if (ich_has_controls) |
|
build_mixer_unit_ctl(state, desc, pin, ich, num_outs, |
|
unitid, &iterm); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
/* |
|
* Processing Unit / Extension Unit |
|
*/ |
|
|
|
/* get callback for processing/extension unit */ |
|
static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int err, val; |
|
|
|
err = get_cur_ctl_value(cval, cval->control << 8, &val); |
|
if (err < 0) { |
|
ucontrol->value.integer.value[0] = cval->min; |
|
return filter_error(cval, err); |
|
} |
|
val = get_relative_value(cval, val); |
|
ucontrol->value.integer.value[0] = val; |
|
return 0; |
|
} |
|
|
|
/* put callback for processing/extension unit */ |
|
static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int val, oval, err; |
|
|
|
err = get_cur_ctl_value(cval, cval->control << 8, &oval); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = ucontrol->value.integer.value[0]; |
|
val = get_abs_value(cval, val); |
|
if (val != oval) { |
|
set_cur_ctl_value(cval, cval->control << 8, val); |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
/* alsa control interface for processing/extension unit */ |
|
static const struct snd_kcontrol_new mixer_procunit_ctl = { |
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
|
.name = "", /* will be filled later */ |
|
.info = mixer_ctl_feature_info, |
|
.get = mixer_ctl_procunit_get, |
|
.put = mixer_ctl_procunit_put, |
|
}; |
|
|
|
/* |
|
* predefined data for processing units |
|
*/ |
|
struct procunit_value_info { |
|
int control; |
|
const char *suffix; |
|
int val_type; |
|
int min_value; |
|
}; |
|
|
|
struct procunit_info { |
|
int type; |
|
char *name; |
|
const struct procunit_value_info *values; |
|
}; |
|
|
|
static const struct procunit_value_info undefined_proc_info[] = { |
|
{ 0x00, "Control Undefined", 0 }, |
|
{ 0 } |
|
}; |
|
|
|
static const struct procunit_value_info updown_proc_info[] = { |
|
{ UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
|
{ UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info prologic_proc_info[] = { |
|
{ UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
|
{ UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info threed_enh_proc_info[] = { |
|
{ UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
|
{ UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info reverb_proc_info[] = { |
|
{ UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
|
{ UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, |
|
{ UAC_REVERB_TIME, "Time", USB_MIXER_U16 }, |
|
{ UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info chorus_proc_info[] = { |
|
{ UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
|
{ UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, |
|
{ UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, |
|
{ UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info dcr_proc_info[] = { |
|
{ UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
|
{ UAC_DCR_RATE, "Ratio", USB_MIXER_U16 }, |
|
{ UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 }, |
|
{ UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, |
|
{ UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 }, |
|
{ UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 }, |
|
{ 0 } |
|
}; |
|
|
|
static const struct procunit_info procunits[] = { |
|
{ UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info }, |
|
{ UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info }, |
|
{ UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info }, |
|
{ UAC_PROCESS_REVERB, "Reverb", reverb_proc_info }, |
|
{ UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info }, |
|
{ UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info }, |
|
{ 0 }, |
|
}; |
|
|
|
static const struct procunit_value_info uac3_updown_proc_info[] = { |
|
{ UAC3_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info uac3_stereo_ext_proc_info[] = { |
|
{ UAC3_EXT_WIDTH_CONTROL, "Width Control", USB_MIXER_U8 }, |
|
{ 0 } |
|
}; |
|
|
|
static const struct procunit_info uac3_procunits[] = { |
|
{ UAC3_PROCESS_UP_DOWNMIX, "Up Down", uac3_updown_proc_info }, |
|
{ UAC3_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", uac3_stereo_ext_proc_info }, |
|
{ UAC3_PROCESS_MULTI_FUNCTION, "Multi-Function", undefined_proc_info }, |
|
{ 0 }, |
|
}; |
|
|
|
/* |
|
* predefined data for extension units |
|
*/ |
|
static const struct procunit_value_info clock_rate_xu_info[] = { |
|
{ USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info clock_source_xu_info[] = { |
|
{ USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info spdif_format_xu_info[] = { |
|
{ USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_value_info soft_limit_xu_info[] = { |
|
{ USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_info extunits[] = { |
|
{ USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, |
|
{ USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, |
|
{ USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, |
|
{ USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, |
|
{ 0 } |
|
}; |
|
|
|
/* |
|
* build a processing/extension unit |
|
*/ |
|
static int build_audio_procunit(struct mixer_build *state, int unitid, |
|
void *raw_desc, const struct procunit_info *list, |
|
bool extension_unit) |
|
{ |
|
struct uac_processing_unit_descriptor *desc = raw_desc; |
|
int num_ins; |
|
struct usb_mixer_elem_info *cval; |
|
struct snd_kcontrol *kctl; |
|
int i, err, nameid, type, len, val; |
|
const struct procunit_info *info; |
|
const struct procunit_value_info *valinfo; |
|
const struct usbmix_name_map *map; |
|
static const struct procunit_value_info default_value_info[] = { |
|
{ 0x01, "Switch", USB_MIXER_BOOLEAN }, |
|
{ 0 } |
|
}; |
|
static const struct procunit_info default_info = { |
|
0, NULL, default_value_info |
|
}; |
|
const char *name = extension_unit ? |
|
"Extension Unit" : "Processing Unit"; |
|
|
|
num_ins = desc->bNrInPins; |
|
for (i = 0; i < num_ins; i++) { |
|
err = parse_audio_unit(state, desc->baSourceID[i]); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
type = le16_to_cpu(desc->wProcessType); |
|
for (info = list; info && info->type; info++) |
|
if (info->type == type) |
|
break; |
|
if (!info || !info->type) |
|
info = &default_info; |
|
|
|
for (valinfo = info->values; valinfo->control; valinfo++) { |
|
__u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); |
|
|
|
if (state->mixer->protocol == UAC_VERSION_1) { |
|
if (!(controls[valinfo->control / 8] & |
|
(1 << ((valinfo->control % 8) - 1)))) |
|
continue; |
|
} else { /* UAC_VERSION_2/3 */ |
|
if (!uac_v2v3_control_is_readable(controls[valinfo->control / 8], |
|
valinfo->control)) |
|
continue; |
|
} |
|
|
|
map = find_map(state->map, unitid, valinfo->control); |
|
if (check_ignored_ctl(map)) |
|
continue; |
|
cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
|
if (!cval) |
|
return -ENOMEM; |
|
snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); |
|
cval->control = valinfo->control; |
|
cval->val_type = valinfo->val_type; |
|
cval->channels = 1; |
|
|
|
if (state->mixer->protocol > UAC_VERSION_1 && |
|
!uac_v2v3_control_is_writeable(controls[valinfo->control / 8], |
|
valinfo->control)) |
|
cval->master_readonly = 1; |
|
|
|
/* get min/max values */ |
|
switch (type) { |
|
case UAC_PROCESS_UP_DOWNMIX: { |
|
bool mode_sel = false; |
|
|
|
switch (state->mixer->protocol) { |
|
case UAC_VERSION_1: |
|
case UAC_VERSION_2: |
|
default: |
|
if (cval->control == UAC_UD_MODE_SELECT) |
|
mode_sel = true; |
|
break; |
|
case UAC_VERSION_3: |
|
if (cval->control == UAC3_UD_MODE_SELECT) |
|
mode_sel = true; |
|
break; |
|
} |
|
|
|
if (mode_sel) { |
|
__u8 *control_spec = uac_processing_unit_specific(desc, |
|
state->mixer->protocol); |
|
cval->min = 1; |
|
cval->max = control_spec[0]; |
|
cval->res = 1; |
|
cval->initialized = 1; |
|
break; |
|
} |
|
|
|
get_min_max(cval, valinfo->min_value); |
|
break; |
|
} |
|
case USB_XU_CLOCK_RATE: |
|
/* |
|
* E-Mu USB 0404/0202/TrackerPre/0204 |
|
* samplerate control quirk |
|
*/ |
|
cval->min = 0; |
|
cval->max = 5; |
|
cval->res = 1; |
|
cval->initialized = 1; |
|
break; |
|
default: |
|
get_min_max(cval, valinfo->min_value); |
|
break; |
|
} |
|
|
|
err = get_cur_ctl_value(cval, cval->control << 8, &val); |
|
if (err < 0) { |
|
usb_mixer_elem_info_free(cval); |
|
return -EINVAL; |
|
} |
|
|
|
kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); |
|
if (!kctl) { |
|
usb_mixer_elem_info_free(cval); |
|
return -ENOMEM; |
|
} |
|
kctl->private_free = snd_usb_mixer_elem_free; |
|
|
|
if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) { |
|
/* nothing */ ; |
|
} else if (info->name) { |
|
strscpy(kctl->id.name, info->name, sizeof(kctl->id.name)); |
|
} else { |
|
if (extension_unit) |
|
nameid = uac_extension_unit_iExtension(desc, state->mixer->protocol); |
|
else |
|
nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); |
|
len = 0; |
|
if (nameid) |
|
len = snd_usb_copy_string_desc(state->chip, |
|
nameid, |
|
kctl->id.name, |
|
sizeof(kctl->id.name)); |
|
if (!len) |
|
strscpy(kctl->id.name, name, sizeof(kctl->id.name)); |
|
} |
|
append_ctl_name(kctl, " "); |
|
append_ctl_name(kctl, valinfo->suffix); |
|
|
|
usb_audio_dbg(state->chip, |
|
"[%d] PU [%s] ch = %d, val = %d/%d\n", |
|
cval->head.id, kctl->id.name, cval->channels, |
|
cval->min, cval->max); |
|
|
|
err = snd_usb_mixer_add_control(&cval->head, kctl); |
|
if (err < 0) |
|
return err; |
|
} |
|
return 0; |
|
} |
|
|
|
static int parse_audio_processing_unit(struct mixer_build *state, int unitid, |
|
void *raw_desc) |
|
{ |
|
switch (state->mixer->protocol) { |
|
case UAC_VERSION_1: |
|
case UAC_VERSION_2: |
|
default: |
|
return build_audio_procunit(state, unitid, raw_desc, |
|
procunits, false); |
|
case UAC_VERSION_3: |
|
return build_audio_procunit(state, unitid, raw_desc, |
|
uac3_procunits, false); |
|
} |
|
} |
|
|
|
static int parse_audio_extension_unit(struct mixer_build *state, int unitid, |
|
void *raw_desc) |
|
{ |
|
/* |
|
* Note that we parse extension units with processing unit descriptors. |
|
* That's ok as the layout is the same. |
|
*/ |
|
return build_audio_procunit(state, unitid, raw_desc, extunits, true); |
|
} |
|
|
|
/* |
|
* Selector Unit |
|
*/ |
|
|
|
/* |
|
* info callback for selector unit |
|
* use an enumerator type for routing |
|
*/ |
|
static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_info *uinfo) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
const char **itemlist = (const char **)kcontrol->private_value; |
|
|
|
if (snd_BUG_ON(!itemlist)) |
|
return -EINVAL; |
|
return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist); |
|
} |
|
|
|
/* get callback for selector unit */ |
|
static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int val, err; |
|
|
|
err = get_cur_ctl_value(cval, cval->control << 8, &val); |
|
if (err < 0) { |
|
ucontrol->value.enumerated.item[0] = 0; |
|
return filter_error(cval, err); |
|
} |
|
val = get_relative_value(cval, val); |
|
ucontrol->value.enumerated.item[0] = val; |
|
return 0; |
|
} |
|
|
|
/* put callback for selector unit */ |
|
static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, |
|
struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct usb_mixer_elem_info *cval = kcontrol->private_data; |
|
int val, oval, err; |
|
|
|
err = get_cur_ctl_value(cval, cval->control << 8, &oval); |
|
if (err < 0) |
|
return filter_error(cval, err); |
|
val = ucontrol->value.enumerated.item[0]; |
|
val = get_abs_value(cval, val); |
|
if (val != oval) { |
|
set_cur_ctl_value(cval, cval->control << 8, val); |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
/* alsa control interface for selector unit */ |
|
static const struct snd_kcontrol_new mixer_selectunit_ctl = { |
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
|
.name = "", /* will be filled later */ |
|
.info = mixer_ctl_selector_info, |
|
.get = mixer_ctl_selector_get, |
|
.put = mixer_ctl_selector_put, |
|
}; |
|
|
|
/* |
|
* private free callback. |
|
* free both private_data and private_value |
|
*/ |
|
static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) |
|
{ |
|
int i, num_ins = 0; |
|
|
|
if (kctl->private_data) { |
|
struct usb_mixer_elem_info *cval = kctl->private_data; |
|
num_ins = cval->max; |
|
usb_mixer_elem_info_free(cval); |
|
kctl->private_data = NULL; |
|
} |
|
if (kctl->private_value) { |
|
char **itemlist = (char **)kctl->private_value; |
|
for (i = 0; i < num_ins; i++) |
|
kfree(itemlist[i]); |
|
kfree(itemlist); |
|
kctl->private_value = 0; |
|
} |
|
} |
|
|
|
/* |
|
* parse a selector unit |
|
*/ |
|
static int parse_audio_selector_unit(struct mixer_build *state, int unitid, |
|
void *raw_desc) |
|
{ |
|
struct uac_selector_unit_descriptor *desc = raw_desc; |
|
unsigned int i, nameid, len; |
|
int err; |
|
struct usb_mixer_elem_info *cval; |
|
struct snd_kcontrol *kctl; |
|
const struct usbmix_name_map *map; |
|
char **namelist; |
|
|
|
for (i = 0; i < desc->bNrInPins; i++) { |
|
err = parse_audio_unit(state, desc->baSourceID[i]); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
if (desc->bNrInPins == 1) /* only one ? nonsense! */ |
|
return 0; |
|
|
|
map = find_map(state->map, unitid, 0); |
|
if (check_ignored_ctl(map)) |
|
return 0; |
|
|
|
cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
|
if (!cval) |
|
return -ENOMEM; |
|
snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); |
|
cval->val_type = USB_MIXER_U8; |
|
cval->channels = 1; |
|
cval->min = 1; |
|
cval->max = desc->bNrInPins; |
|
cval->res = 1; |
|
cval->initialized = 1; |
|
|
|
switch (state->mixer->protocol) { |
|
case UAC_VERSION_1: |
|
default: |
|
cval->control = 0; |
|
break; |
|
case UAC_VERSION_2: |
|
case UAC_VERSION_3: |
|
if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR || |
|
desc->bDescriptorSubtype == UAC3_CLOCK_SELECTOR) |
|
cval->control = UAC2_CX_CLOCK_SELECTOR; |
|
else /* UAC2/3_SELECTOR_UNIT */ |
|
cval->control = UAC2_SU_SELECTOR; |
|
break; |
|
} |
|
|
|
namelist = kcalloc(desc->bNrInPins, sizeof(char *), GFP_KERNEL); |
|
if (!namelist) { |
|
err = -ENOMEM; |
|
goto error_cval; |
|
} |
|
#define MAX_ITEM_NAME_LEN 64 |
|
for (i = 0; i < desc->bNrInPins; i++) { |
|
struct usb_audio_term iterm; |
|
namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); |
|
if (!namelist[i]) { |
|
err = -ENOMEM; |
|
goto error_name; |
|
} |
|
len = check_mapped_selector_name(state, unitid, i, namelist[i], |
|
MAX_ITEM_NAME_LEN); |
|
if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) |
|
len = get_term_name(state->chip, &iterm, namelist[i], |
|
MAX_ITEM_NAME_LEN, 0); |
|
if (! len) |
|
sprintf(namelist[i], "Input %u", i); |
|
} |
|
|
|
kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); |
|
if (! kctl) { |
|
usb_audio_err(state->chip, "cannot malloc kcontrol\n"); |
|
err = -ENOMEM; |
|
goto error_name; |
|
} |
|
kctl->private_value = (unsigned long)namelist; |
|
kctl->private_free = usb_mixer_selector_elem_free; |
|
|
|
/* check the static mapping table at first */ |
|
len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
|
if (!len) { |
|
/* no mapping ? */ |
|
switch (state->mixer->protocol) { |
|
case UAC_VERSION_1: |
|
case UAC_VERSION_2: |
|
default: |
|
/* if iSelector is given, use it */ |
|
nameid = uac_selector_unit_iSelector(desc); |
|
if (nameid) |
|
len = snd_usb_copy_string_desc(state->chip, |
|
nameid, kctl->id.name, |
|
sizeof(kctl->id.name)); |
|
break; |
|
case UAC_VERSION_3: |
|
/* TODO: Class-Specific strings not yet supported */ |
|
break; |
|
} |
|
|
|
/* ... or pick up the terminal name at next */ |
|
if (!len) |
|
len = get_term_name(state->chip, &state->oterm, |
|
kctl->id.name, sizeof(kctl->id.name), 0); |
|
/* ... or use the fixed string "USB" as the last resort */ |
|
if (!len) |
|
strscpy(kctl->id.name, "USB", sizeof(kctl->id.name)); |
|
|
|
/* and add the proper suffix */ |
|
if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR || |
|
desc->bDescriptorSubtype == UAC3_CLOCK_SELECTOR) |
|
append_ctl_name(kctl, " Clock Source"); |
|
else if ((state->oterm.type & 0xff00) == 0x0100) |
|
append_ctl_name(kctl, " Capture Source"); |
|
else |
|
append_ctl_name(kctl, " Playback Source"); |
|
} |
|
|
|
usb_audio_dbg(state->chip, "[%d] SU [%s] items = %d\n", |
|
cval->head.id, kctl->id.name, desc->bNrInPins); |
|
return snd_usb_mixer_add_control(&cval->head, kctl); |
|
|
|
error_name: |
|
for (i = 0; i < desc->bNrInPins; i++) |
|
kfree(namelist[i]); |
|
kfree(namelist); |
|
error_cval: |
|
usb_mixer_elem_info_free(cval); |
|
return err; |
|
} |
|
|
|
/* |
|
* parse an audio unit recursively |
|
*/ |
|
|
|
static int parse_audio_unit(struct mixer_build *state, int unitid) |
|
{ |
|
unsigned char *p1; |
|
int protocol = state->mixer->protocol; |
|
|
|
if (test_and_set_bit(unitid, state->unitbitmap)) |
|
return 0; /* the unit already visited */ |
|
|
|
p1 = find_audio_control_unit(state, unitid); |
|
if (!p1) { |
|
usb_audio_err(state->chip, "unit %d not found!\n", unitid); |
|
return -EINVAL; |
|
} |
|
|
|
if (!snd_usb_validate_audio_desc(p1, protocol)) { |
|
usb_audio_dbg(state->chip, "invalid unit %d\n", unitid); |
|
return 0; /* skip invalid unit */ |
|
} |
|
|
|
switch (PTYPE(protocol, p1[2])) { |
|
case PTYPE(UAC_VERSION_1, UAC_INPUT_TERMINAL): |
|
case PTYPE(UAC_VERSION_2, UAC_INPUT_TERMINAL): |
|
case PTYPE(UAC_VERSION_3, UAC_INPUT_TERMINAL): |
|
return parse_audio_input_terminal(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_1, UAC_MIXER_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC_MIXER_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_MIXER_UNIT): |
|
return parse_audio_mixer_unit(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SOURCE): |
|
case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SOURCE): |
|
return parse_clock_source_unit(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_1, UAC_SELECTOR_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC_SELECTOR_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_SELECTOR_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SELECTOR): |
|
case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SELECTOR): |
|
return parse_audio_selector_unit(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_1, UAC_FEATURE_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC_FEATURE_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_FEATURE_UNIT): |
|
return parse_audio_feature_unit(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_1, UAC1_PROCESSING_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC2_PROCESSING_UNIT_V2): |
|
case PTYPE(UAC_VERSION_3, UAC3_PROCESSING_UNIT): |
|
return parse_audio_processing_unit(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_1, UAC1_EXTENSION_UNIT): |
|
case PTYPE(UAC_VERSION_2, UAC2_EXTENSION_UNIT_V2): |
|
case PTYPE(UAC_VERSION_3, UAC3_EXTENSION_UNIT): |
|
return parse_audio_extension_unit(state, unitid, p1); |
|
case PTYPE(UAC_VERSION_2, UAC2_EFFECT_UNIT): |
|
case PTYPE(UAC_VERSION_3, UAC3_EFFECT_UNIT): |
|
return 0; /* FIXME - effect units not implemented yet */ |
|
default: |
|
usb_audio_err(state->chip, |
|
"unit %u: unexpected type 0x%02x\n", |
|
unitid, p1[2]); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) |
|
{ |
|
/* kill pending URBs */ |
|
snd_usb_mixer_disconnect(mixer); |
|
|
|
kfree(mixer->id_elems); |
|
if (mixer->urb) { |
|
kfree(mixer->urb->transfer_buffer); |
|
usb_free_urb(mixer->urb); |
|
} |
|
usb_free_urb(mixer->rc_urb); |
|
kfree(mixer->rc_setup_packet); |
|
kfree(mixer); |
|
} |
|
|
|
static int snd_usb_mixer_dev_free(struct snd_device *device) |
|
{ |
|
struct usb_mixer_interface *mixer = device->device_data; |
|
snd_usb_mixer_free(mixer); |
|
return 0; |
|
} |
|
|
|
/* UAC3 predefined channels configuration */ |
|
struct uac3_badd_profile { |
|
int subclass; |
|
const char *name; |
|
int c_chmask; /* capture channels mask */ |
|
int p_chmask; /* playback channels mask */ |
|
int st_chmask; /* side tone mixing channel mask */ |
|
}; |
|
|
|
static const struct uac3_badd_profile uac3_badd_profiles[] = { |
|
{ |
|
/* |
|
* BAIF, BAOF or combination of both |
|
* IN: Mono or Stereo cfg, Mono alt possible |
|
* OUT: Mono or Stereo cfg, Mono alt possible |
|
*/ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_GENERIC_IO, |
|
.name = "GENERIC IO", |
|
.c_chmask = -1, /* dynamic channels */ |
|
.p_chmask = -1, /* dynamic channels */ |
|
}, |
|
{ |
|
/* BAOF; Stereo only cfg, Mono alt possible */ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_HEADPHONE, |
|
.name = "HEADPHONE", |
|
.p_chmask = 3, |
|
}, |
|
{ |
|
/* BAOF; Mono or Stereo cfg, Mono alt possible */ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_SPEAKER, |
|
.name = "SPEAKER", |
|
.p_chmask = -1, /* dynamic channels */ |
|
}, |
|
{ |
|
/* BAIF; Mono or Stereo cfg, Mono alt possible */ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_MICROPHONE, |
|
.name = "MICROPHONE", |
|
.c_chmask = -1, /* dynamic channels */ |
|
}, |
|
{ |
|
/* |
|
* BAIOF topology |
|
* IN: Mono only |
|
* OUT: Mono or Stereo cfg, Mono alt possible |
|
*/ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_HEADSET, |
|
.name = "HEADSET", |
|
.c_chmask = 1, |
|
.p_chmask = -1, /* dynamic channels */ |
|
.st_chmask = 1, |
|
}, |
|
{ |
|
/* BAIOF; IN: Mono only; OUT: Stereo only, Mono alt possible */ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER, |
|
.name = "HEADSET ADAPTER", |
|
.c_chmask = 1, |
|
.p_chmask = 3, |
|
.st_chmask = 1, |
|
}, |
|
{ |
|
/* BAIF + BAOF; IN: Mono only; OUT: Mono only */ |
|
.subclass = UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE, |
|
.name = "SPEAKERPHONE", |
|
.c_chmask = 1, |
|
.p_chmask = 1, |
|
}, |
|
{ 0 } /* terminator */ |
|
}; |
|
|
|
static bool uac3_badd_func_has_valid_channels(struct usb_mixer_interface *mixer, |
|
const struct uac3_badd_profile *f, |
|
int c_chmask, int p_chmask) |
|
{ |
|
/* |
|
* If both playback/capture channels are dynamic, make sure |
|
* at least one channel is present |
|
*/ |
|
if (f->c_chmask < 0 && f->p_chmask < 0) { |
|
if (!c_chmask && !p_chmask) { |
|
usb_audio_warn(mixer->chip, "BAAD %s: no channels?", |
|
f->name); |
|
return false; |
|
} |
|
return true; |
|
} |
|
|
|
if ((f->c_chmask < 0 && !c_chmask) || |
|
(f->c_chmask >= 0 && f->c_chmask != c_chmask)) { |
|
usb_audio_warn(mixer->chip, "BAAD %s c_chmask mismatch", |
|
f->name); |
|
return false; |
|
} |
|
if ((f->p_chmask < 0 && !p_chmask) || |
|
(f->p_chmask >= 0 && f->p_chmask != p_chmask)) { |
|
usb_audio_warn(mixer->chip, "BAAD %s p_chmask mismatch", |
|
f->name); |
|
return false; |
|
} |
|
return true; |
|
} |
|
|
|
/* |
|
* create mixer controls for UAC3 BADD profiles |
|
* |
|
* UAC3 BADD device doesn't contain CS descriptors thus we will guess everything |
|
* |
|
* BADD device may contain Mixer Unit, which doesn't have any controls, skip it |
|
*/ |
|
static int snd_usb_mixer_controls_badd(struct usb_mixer_interface *mixer, |
|
int ctrlif) |
|
{ |
|
struct usb_device *dev = mixer->chip->dev; |
|
struct usb_interface_assoc_descriptor *assoc; |
|
int badd_profile = mixer->chip->badd_profile; |
|
const struct uac3_badd_profile *f; |
|
const struct usbmix_ctl_map *map; |
|
int p_chmask = 0, c_chmask = 0, st_chmask = 0; |
|
int i; |
|
|
|
assoc = usb_ifnum_to_if(dev, ctrlif)->intf_assoc; |
|
|
|
/* Detect BADD capture/playback channels from AS EP descriptors */ |
|
for (i = 0; i < assoc->bInterfaceCount; i++) { |
|
int intf = assoc->bFirstInterface + i; |
|
|
|
struct usb_interface *iface; |
|
struct usb_host_interface *alts; |
|
struct usb_interface_descriptor *altsd; |
|
unsigned int maxpacksize; |
|
char dir_in; |
|
int chmask, num; |
|
|
|
if (intf == ctrlif) |
|
continue; |
|
|
|
iface = usb_ifnum_to_if(dev, intf); |
|
if (!iface) |
|
continue; |
|
|
|
num = iface->num_altsetting; |
|
|
|
if (num < 2) |
|
return -EINVAL; |
|
|
|
/* |
|
* The number of Channels in an AudioStreaming interface |
|
* and the audio sample bit resolution (16 bits or 24 |
|
* bits) can be derived from the wMaxPacketSize field in |
|
* the Standard AS Audio Data Endpoint descriptor in |
|
* Alternate Setting 1 |
|
*/ |
|
alts = &iface->altsetting[1]; |
|
altsd = get_iface_desc(alts); |
|
|
|
if (altsd->bNumEndpoints < 1) |
|
return -EINVAL; |
|
|
|
/* check direction */ |
|
dir_in = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN); |
|
maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
|
|
|
switch (maxpacksize) { |
|
default: |
|
usb_audio_err(mixer->chip, |
|
"incorrect wMaxPacketSize 0x%x for BADD profile\n", |
|
maxpacksize); |
|
return -EINVAL; |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_16: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_16: |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_24: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_24: |
|
chmask = 1; |
|
break; |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_16: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_16: |
|
case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_24: |
|
case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_24: |
|
chmask = 3; |
|
break; |
|
} |
|
|
|
if (dir_in) |
|
c_chmask = chmask; |
|
else |
|
p_chmask = chmask; |
|
} |
|
|
|
usb_audio_dbg(mixer->chip, |
|
"UAC3 BADD profile 0x%x: detected c_chmask=%d p_chmask=%d\n", |
|
badd_profile, c_chmask, p_chmask); |
|
|
|
/* check the mapping table */ |
|
for (map = uac3_badd_usbmix_ctl_maps; map->id; map++) { |
|
if (map->id == badd_profile) |
|
break; |
|
} |
|
|
|
if (!map->id) |
|
return -EINVAL; |
|
|
|
for (f = uac3_badd_profiles; f->name; f++) { |
|
if (badd_profile == f->subclass) |
|
break; |
|
} |
|
if (!f->name) |
|
return -EINVAL; |
|
if (!uac3_badd_func_has_valid_channels(mixer, f, c_chmask, p_chmask)) |
|
return -EINVAL; |
|
st_chmask = f->st_chmask; |
|
|
|
/* Playback */ |
|
if (p_chmask) { |
|
/* Master channel, always writable */ |
|
build_feature_ctl_badd(mixer, 0, UAC_FU_MUTE, |
|
UAC3_BADD_FU_ID2, map->map); |
|
/* Mono/Stereo volume channels, always writable */ |
|
build_feature_ctl_badd(mixer, p_chmask, UAC_FU_VOLUME, |
|
UAC3_BADD_FU_ID2, map->map); |
|
} |
|
|
|
/* Capture */ |
|
if (c_chmask) { |
|
/* Master channel, always writable */ |
|
build_feature_ctl_badd(mixer, 0, UAC_FU_MUTE, |
|
UAC3_BADD_FU_ID5, map->map); |
|
/* Mono/Stereo volume channels, always writable */ |
|
build_feature_ctl_badd(mixer, c_chmask, UAC_FU_VOLUME, |
|
UAC3_BADD_FU_ID5, map->map); |
|
} |
|
|
|
/* Side tone-mixing */ |
|
if (st_chmask) { |
|
/* Master channel, always writable */ |
|
build_feature_ctl_badd(mixer, 0, UAC_FU_MUTE, |
|
UAC3_BADD_FU_ID7, map->map); |
|
/* Mono volume channel, always writable */ |
|
build_feature_ctl_badd(mixer, 1, UAC_FU_VOLUME, |
|
UAC3_BADD_FU_ID7, map->map); |
|
} |
|
|
|
/* Insertion Control */ |
|
if (f->subclass == UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER) { |
|
struct usb_audio_term iterm, oterm; |
|
|
|
/* Input Term - Insertion control */ |
|
memset(&iterm, 0, sizeof(iterm)); |
|
iterm.id = UAC3_BADD_IT_ID4; |
|
iterm.type = UAC_BIDIR_TERMINAL_HEADSET; |
|
build_connector_control(mixer, map->map, &iterm, true); |
|
|
|
/* Output Term - Insertion control */ |
|
memset(&oterm, 0, sizeof(oterm)); |
|
oterm.id = UAC3_BADD_OT_ID3; |
|
oterm.type = UAC_BIDIR_TERMINAL_HEADSET; |
|
build_connector_control(mixer, map->map, &oterm, false); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* create mixer controls |
|
* |
|
* walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers |
|
*/ |
|
static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) |
|
{ |
|
struct mixer_build state; |
|
int err; |
|
const struct usbmix_ctl_map *map; |
|
void *p; |
|
|
|
memset(&state, 0, sizeof(state)); |
|
state.chip = mixer->chip; |
|
state.mixer = mixer; |
|
state.buffer = mixer->hostif->extra; |
|
state.buflen = mixer->hostif->extralen; |
|
|
|
/* check the mapping table */ |
|
for (map = usbmix_ctl_maps; map->id; map++) { |
|
if (map->id == state.chip->usb_id) { |
|
state.map = map->map; |
|
state.selector_map = map->selector_map; |
|
mixer->connector_map = map->connector_map; |
|
break; |
|
} |
|
} |
|
|
|
p = NULL; |
|
while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, |
|
mixer->hostif->extralen, |
|
p, UAC_OUTPUT_TERMINAL)) != NULL) { |
|
if (!snd_usb_validate_audio_desc(p, mixer->protocol)) |
|
continue; /* skip invalid descriptor */ |
|
|
|
if (mixer->protocol == UAC_VERSION_1) { |
|
struct uac1_output_terminal_descriptor *desc = p; |
|
|
|
/* mark terminal ID as visited */ |
|
set_bit(desc->bTerminalID, state.unitbitmap); |
|
state.oterm.id = desc->bTerminalID; |
|
state.oterm.type = le16_to_cpu(desc->wTerminalType); |
|
state.oterm.name = desc->iTerminal; |
|
err = parse_audio_unit(&state, desc->bSourceID); |
|
if (err < 0 && err != -EINVAL) |
|
return err; |
|
} else if (mixer->protocol == UAC_VERSION_2) { |
|
struct uac2_output_terminal_descriptor *desc = p; |
|
|
|
/* mark terminal ID as visited */ |
|
set_bit(desc->bTerminalID, state.unitbitmap); |
|
state.oterm.id = desc->bTerminalID; |
|
state.oterm.type = le16_to_cpu(desc->wTerminalType); |
|
state.oterm.name = desc->iTerminal; |
|
err = parse_audio_unit(&state, desc->bSourceID); |
|
if (err < 0 && err != -EINVAL) |
|
return err; |
|
|
|
/* |
|
* For UAC2, use the same approach to also add the |
|
* clock selectors |
|
*/ |
|
err = parse_audio_unit(&state, desc->bCSourceID); |
|
if (err < 0 && err != -EINVAL) |
|
return err; |
|
|
|
if ((state.oterm.type & 0xff00) != 0x0100 && |
|
uac_v2v3_control_is_readable(le16_to_cpu(desc->bmControls), |
|
UAC2_TE_CONNECTOR)) { |
|
build_connector_control(state.mixer, state.map, |
|
&state.oterm, false); |
|
} |
|
} else { /* UAC_VERSION_3 */ |
|
struct uac3_output_terminal_descriptor *desc = p; |
|
|
|
/* mark terminal ID as visited */ |
|
set_bit(desc->bTerminalID, state.unitbitmap); |
|
state.oterm.id = desc->bTerminalID; |
|
state.oterm.type = le16_to_cpu(desc->wTerminalType); |
|
state.oterm.name = le16_to_cpu(desc->wTerminalDescrStr); |
|
err = parse_audio_unit(&state, desc->bSourceID); |
|
if (err < 0 && err != -EINVAL) |
|
return err; |
|
|
|
/* |
|
* For UAC3, use the same approach to also add the |
|
* clock selectors |
|
*/ |
|
err = parse_audio_unit(&state, desc->bCSourceID); |
|
if (err < 0 && err != -EINVAL) |
|
return err; |
|
|
|
if ((state.oterm.type & 0xff00) != 0x0100 && |
|
uac_v2v3_control_is_readable(le32_to_cpu(desc->bmControls), |
|
UAC3_TE_INSERTION)) { |
|
build_connector_control(state.mixer, state.map, |
|
&state.oterm, false); |
|
} |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int delegate_notify(struct usb_mixer_interface *mixer, int unitid, |
|
u8 *control, u8 *channel) |
|
{ |
|
const struct usbmix_connector_map *map = mixer->connector_map; |
|
|
|
if (!map) |
|
return unitid; |
|
|
|
for (; map->id; map++) { |
|
if (map->id == unitid) { |
|
if (control && map->control) |
|
*control = map->control; |
|
if (channel && map->channel) |
|
*channel = map->channel; |
|
return map->delegated_id; |
|
} |
|
} |
|
return unitid; |
|
} |
|
|
|
void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) |
|
{ |
|
struct usb_mixer_elem_list *list; |
|
|
|
unitid = delegate_notify(mixer, unitid, NULL, NULL); |
|
|
|
for_each_mixer_elem(list, mixer, unitid) { |
|
struct usb_mixer_elem_info *info; |
|
|
|
if (!list->is_std_info) |
|
continue; |
|
info = mixer_elem_list_to_info(list); |
|
/* invalidate cache, so the value is read from the device */ |
|
info->cached = 0; |
|
snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&list->kctl->id); |
|
} |
|
} |
|
|
|
static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, |
|
struct usb_mixer_elem_list *list) |
|
{ |
|
struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list); |
|
static const char * const val_types[] = { |
|
[USB_MIXER_BOOLEAN] = "BOOLEAN", |
|
[USB_MIXER_INV_BOOLEAN] = "INV_BOOLEAN", |
|
[USB_MIXER_S8] = "S8", |
|
[USB_MIXER_U8] = "U8", |
|
[USB_MIXER_S16] = "S16", |
|
[USB_MIXER_U16] = "U16", |
|
[USB_MIXER_S32] = "S32", |
|
[USB_MIXER_U32] = "U32", |
|
[USB_MIXER_BESPOKEN] = "BESPOKEN", |
|
}; |
|
snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " |
|
"channels=%i, type=\"%s\"\n", cval->head.id, |
|
cval->control, cval->cmask, cval->channels, |
|
val_types[cval->val_type]); |
|
snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", |
|
cval->min, cval->max, cval->dBmin, cval->dBmax); |
|
} |
|
|
|
static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, |
|
struct snd_info_buffer *buffer) |
|
{ |
|
struct snd_usb_audio *chip = entry->private_data; |
|
struct usb_mixer_interface *mixer; |
|
struct usb_mixer_elem_list *list; |
|
int unitid; |
|
|
|
list_for_each_entry(mixer, &chip->mixer_list, list) { |
|
snd_iprintf(buffer, |
|
"USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", |
|
chip->usb_id, mixer_ctrl_intf(mixer), |
|
mixer->ignore_ctl_error); |
|
snd_iprintf(buffer, "Card: %s\n", chip->card->longname); |
|
for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { |
|
for_each_mixer_elem(list, mixer, unitid) { |
|
snd_iprintf(buffer, " Unit: %i\n", list->id); |
|
if (list->kctl) |
|
snd_iprintf(buffer, |
|
" Control: name=\"%s\", index=%i\n", |
|
list->kctl->id.name, |
|
list->kctl->id.index); |
|
if (list->dump) |
|
list->dump(buffer, list); |
|
} |
|
} |
|
} |
|
} |
|
|
|
static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, |
|
int attribute, int value, int index) |
|
{ |
|
struct usb_mixer_elem_list *list; |
|
__u8 unitid = (index >> 8) & 0xff; |
|
__u8 control = (value >> 8) & 0xff; |
|
__u8 channel = value & 0xff; |
|
unsigned int count = 0; |
|
|
|
if (channel >= MAX_CHANNELS) { |
|
usb_audio_dbg(mixer->chip, |
|
"%s(): bogus channel number %d\n", |
|
__func__, channel); |
|
return; |
|
} |
|
|
|
unitid = delegate_notify(mixer, unitid, &control, &channel); |
|
|
|
for_each_mixer_elem(list, mixer, unitid) |
|
count++; |
|
|
|
if (count == 0) |
|
return; |
|
|
|
for_each_mixer_elem(list, mixer, unitid) { |
|
struct usb_mixer_elem_info *info; |
|
|
|
if (!list->kctl) |
|
continue; |
|
if (!list->is_std_info) |
|
continue; |
|
|
|
info = mixer_elem_list_to_info(list); |
|
if (count > 1 && info->control != control) |
|
continue; |
|
|
|
switch (attribute) { |
|
case UAC2_CS_CUR: |
|
/* invalidate cache, so the value is read from the device */ |
|
if (channel) |
|
info->cached &= ~(1 << channel); |
|
else /* master channel */ |
|
info->cached = 0; |
|
|
|
snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&info->head.kctl->id); |
|
break; |
|
|
|
case UAC2_CS_RANGE: |
|
/* TODO */ |
|
break; |
|
|
|
case UAC2_CS_MEM: |
|
/* TODO */ |
|
break; |
|
|
|
default: |
|
usb_audio_dbg(mixer->chip, |
|
"unknown attribute %d in interrupt\n", |
|
attribute); |
|
break; |
|
} /* switch */ |
|
} |
|
} |
|
|
|
static void snd_usb_mixer_interrupt(struct urb *urb) |
|
{ |
|
struct usb_mixer_interface *mixer = urb->context; |
|
int len = urb->actual_length; |
|
int ustatus = urb->status; |
|
|
|
if (ustatus != 0) |
|
goto requeue; |
|
|
|
if (mixer->protocol == UAC_VERSION_1) { |
|
struct uac1_status_word *status; |
|
|
|
for (status = urb->transfer_buffer; |
|
len >= sizeof(*status); |
|
len -= sizeof(*status), status++) { |
|
dev_dbg(&urb->dev->dev, "status interrupt: %02x %02x\n", |
|
status->bStatusType, |
|
status->bOriginator); |
|
|
|
/* ignore any notifications not from the control interface */ |
|
if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != |
|
UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) |
|
continue; |
|
|
|
if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) |
|
snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); |
|
else |
|
snd_usb_mixer_notify_id(mixer, status->bOriginator); |
|
} |
|
} else { /* UAC_VERSION_2 */ |
|
struct uac2_interrupt_data_msg *msg; |
|
|
|
for (msg = urb->transfer_buffer; |
|
len >= sizeof(*msg); |
|
len -= sizeof(*msg), msg++) { |
|
/* drop vendor specific and endpoint requests */ |
|
if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || |
|
(msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) |
|
continue; |
|
|
|
snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, |
|
le16_to_cpu(msg->wValue), |
|
le16_to_cpu(msg->wIndex)); |
|
} |
|
} |
|
|
|
requeue: |
|
if (ustatus != -ENOENT && |
|
ustatus != -ECONNRESET && |
|
ustatus != -ESHUTDOWN) { |
|
urb->dev = mixer->chip->dev; |
|
usb_submit_urb(urb, GFP_ATOMIC); |
|
} |
|
} |
|
|
|
/* create the handler for the optional status interrupt endpoint */ |
|
static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) |
|
{ |
|
struct usb_endpoint_descriptor *ep; |
|
void *transfer_buffer; |
|
int buffer_length; |
|
unsigned int epnum; |
|
|
|
/* we need one interrupt input endpoint */ |
|
if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) |
|
return 0; |
|
ep = get_endpoint(mixer->hostif, 0); |
|
if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) |
|
return 0; |
|
|
|
epnum = usb_endpoint_num(ep); |
|
buffer_length = le16_to_cpu(ep->wMaxPacketSize); |
|
transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); |
|
if (!transfer_buffer) |
|
return -ENOMEM; |
|
mixer->urb = usb_alloc_urb(0, GFP_KERNEL); |
|
if (!mixer->urb) { |
|
kfree(transfer_buffer); |
|
return -ENOMEM; |
|
} |
|
usb_fill_int_urb(mixer->urb, mixer->chip->dev, |
|
usb_rcvintpipe(mixer->chip->dev, epnum), |
|
transfer_buffer, buffer_length, |
|
snd_usb_mixer_interrupt, mixer, ep->bInterval); |
|
usb_submit_urb(mixer->urb, GFP_KERNEL); |
|
return 0; |
|
} |
|
|
|
int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif) |
|
{ |
|
static const struct snd_device_ops dev_ops = { |
|
.dev_free = snd_usb_mixer_dev_free |
|
}; |
|
struct usb_mixer_interface *mixer; |
|
int err; |
|
|
|
strcpy(chip->card->mixername, "USB Mixer"); |
|
|
|
mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); |
|
if (!mixer) |
|
return -ENOMEM; |
|
mixer->chip = chip; |
|
mixer->ignore_ctl_error = !!(chip->quirk_flags & QUIRK_FLAG_IGNORE_CTL_ERROR); |
|
mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), |
|
GFP_KERNEL); |
|
if (!mixer->id_elems) { |
|
kfree(mixer); |
|
return -ENOMEM; |
|
} |
|
|
|
mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; |
|
switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { |
|
case UAC_VERSION_1: |
|
default: |
|
mixer->protocol = UAC_VERSION_1; |
|
break; |
|
case UAC_VERSION_2: |
|
mixer->protocol = UAC_VERSION_2; |
|
break; |
|
case UAC_VERSION_3: |
|
mixer->protocol = UAC_VERSION_3; |
|
break; |
|
} |
|
|
|
if (mixer->protocol == UAC_VERSION_3 && |
|
chip->badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { |
|
err = snd_usb_mixer_controls_badd(mixer, ctrlif); |
|
if (err < 0) |
|
goto _error; |
|
} else { |
|
err = snd_usb_mixer_controls(mixer); |
|
if (err < 0) |
|
goto _error; |
|
} |
|
|
|
err = snd_usb_mixer_status_create(mixer); |
|
if (err < 0) |
|
goto _error; |
|
|
|
err = snd_usb_mixer_apply_create_quirk(mixer); |
|
if (err < 0) |
|
goto _error; |
|
|
|
err = snd_device_new(chip->card, SNDRV_DEV_CODEC, mixer, &dev_ops); |
|
if (err < 0) |
|
goto _error; |
|
|
|
if (list_empty(&chip->mixer_list)) |
|
snd_card_ro_proc_new(chip->card, "usbmixer", chip, |
|
snd_usb_mixer_proc_read); |
|
|
|
list_add(&mixer->list, &chip->mixer_list); |
|
return 0; |
|
|
|
_error: |
|
snd_usb_mixer_free(mixer); |
|
return err; |
|
} |
|
|
|
void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) |
|
{ |
|
if (mixer->disconnected) |
|
return; |
|
if (mixer->urb) |
|
usb_kill_urb(mixer->urb); |
|
if (mixer->rc_urb) |
|
usb_kill_urb(mixer->rc_urb); |
|
if (mixer->private_free) |
|
mixer->private_free(mixer); |
|
mixer->disconnected = true; |
|
} |
|
|
|
/* stop any bus activity of a mixer */ |
|
static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) |
|
{ |
|
usb_kill_urb(mixer->urb); |
|
usb_kill_urb(mixer->rc_urb); |
|
} |
|
|
|
static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) |
|
{ |
|
int err; |
|
|
|
if (mixer->urb) { |
|
err = usb_submit_urb(mixer->urb, GFP_NOIO); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer) |
|
{ |
|
snd_usb_mixer_inactivate(mixer); |
|
if (mixer->private_suspend) |
|
mixer->private_suspend(mixer); |
|
return 0; |
|
} |
|
|
|
static int restore_mixer_value(struct usb_mixer_elem_list *list) |
|
{ |
|
struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list); |
|
int c, err, idx; |
|
|
|
if (cval->val_type == USB_MIXER_BESPOKEN) |
|
return 0; |
|
|
|
if (cval->cmask) { |
|
idx = 0; |
|
for (c = 0; c < MAX_CHANNELS; c++) { |
|
if (!(cval->cmask & (1 << c))) |
|
continue; |
|
if (cval->cached & (1 << (c + 1))) { |
|
err = snd_usb_set_cur_mix_value(cval, c + 1, idx, |
|
cval->cache_val[idx]); |
|
if (err < 0) |
|
break; |
|
} |
|
idx++; |
|
} |
|
} else { |
|
/* master */ |
|
if (cval->cached) |
|
snd_usb_set_cur_mix_value(cval, 0, 0, *cval->cache_val); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int snd_usb_mixer_resume(struct usb_mixer_interface *mixer) |
|
{ |
|
struct usb_mixer_elem_list *list; |
|
int id, err; |
|
|
|
/* restore cached mixer values */ |
|
for (id = 0; id < MAX_ID_ELEMS; id++) { |
|
for_each_mixer_elem(list, mixer, id) { |
|
if (list->resume) { |
|
err = list->resume(list); |
|
if (err < 0) |
|
return err; |
|
} |
|
} |
|
} |
|
|
|
snd_usb_mixer_resume_quirk(mixer); |
|
|
|
return snd_usb_mixer_activate(mixer); |
|
} |
|
|
|
void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, |
|
struct usb_mixer_interface *mixer, |
|
int unitid) |
|
{ |
|
list->mixer = mixer; |
|
list->id = unitid; |
|
list->dump = snd_usb_mixer_dump_cval; |
|
list->resume = restore_mixer_value; |
|
}
|
|
|