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| author | Jorge Sanjuan <jorge.sanjuan@codethink.co.uk> | 2018-07-11 13:37:55 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-07-16 16:36:15 +0200 |
| commit | 55b8cb46a71137aa19eba2ae5a4be384500db89e (patch) | |
| tree | 5adfd2e429c8f82af43d0d4d4685728eed28f94c /sound/usb/mixer.c | |
| parent | 8b3a087f7f6580e685a4f1ac980d07f96ad250a5 (diff) | |
| download | linux-55b8cb46a71137aa19eba2ae5a4be384500db89e.tar.gz linux-55b8cb46a71137aa19eba2ae5a4be384500db89e.tar.bz2 linux-55b8cb46a71137aa19eba2ae5a4be384500db89e.zip | |
ALSA: usb-audio: Tidy up logic for Processing Unit min/max values
This patch refactors the processing units min/max calculation logic
for the mixer controls and fixes an issue where the Mode Select
checking of the Up/Down mixers doesn't differentiate between the
UAC1 and UAC2 Control Selector (0x02) and the UAC3 one which is
different (0x01).
Signed-off-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.c')
| -rw-r--r-- | sound/usb/mixer.c | 58 |
1 files changed, 41 insertions, 17 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 87f18cb74ca3..73e811f86a95 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -2376,25 +2376,49 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, cval->master_readonly = 1; /* get min/max values */ - if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) { - __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); - /* FIXME: hard-coded */ - cval->min = 1; - cval->max = control_spec[0]; - cval->res = 1; - cval->initialized = 1; - } else { - if (type == USB_XU_CLOCK_RATE) { - /* - * E-Mu USB 0404/0202/TrackerPre/0204 - * samplerate control quirk - */ - cval->min = 0; - cval->max = 5; + 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; - } else - get_min_max(cval, valinfo->min_value); + 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; } kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); |