diff options
| author | Takashi Iwai <tiwai@suse.de> | 2020-11-23 09:53:45 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-11-23 15:17:24 +0100 |
| commit | 62abd092f97b33a33fcdb98c30bc01f2b1c55d04 (patch) | |
| tree | 15532ccf444ab91345aa4a3c1ee0a7c5e7acaca4 /sound | |
| parent | 83b7dcbc51c930fc2079ab6c6fc9d719768321f1 (diff) | |
ALSA: usb-audio: Add implicit_fb module option
A new module option, implicit_fb, is added to specify the driver
looking for the implicit feedback sync. This can be useful for a
device that could be working better in the implicit feed back mode and
user wants to test it quickly. When this works, we can add the quirk
entry easily.
Tested-by: Keith Milner <kamilner@superlative.org>
Tested-by: Dylan Robinson <dylan_robinson@motu.com>
Link: https://lore.kernel.org/r/20201123085347.19667-40-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/card.c | 4 | ||||
| -rw-r--r-- | sound/usb/implicit.c | 4 | ||||
| -rw-r--r-- | sound/usb/usbaudio.h | 1 |
3 files changed, 9 insertions, 0 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c index 7940b3bff5bc..cb0b6582dfee 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -72,6 +72,7 @@ static bool ignore_ctl_error; static bool autoclock = true; static char *quirk_alias[SNDRV_CARDS]; static char *delayed_register[SNDRV_CARDS]; +static bool implicit_fb[SNDRV_CARDS]; bool snd_usb_use_vmalloc = true; bool snd_usb_skip_validation; @@ -97,6 +98,8 @@ module_param_array(quirk_alias, charp, NULL, 0444); MODULE_PARM_DESC(quirk_alias, "Quirk aliases, e.g. 0123abcd:5678beef."); module_param_array(delayed_register, charp, NULL, 0444); MODULE_PARM_DESC(delayed_register, "Quirk for delayed registration, given by id:iface, e.g. 0123abcd:4."); +module_param_array(implicit_fb, bool, NULL, 0444); +MODULE_PARM_DESC(implicit_fb, "Apply generic implicit feedback sync mode."); module_param_named(use_vmalloc, snd_usb_use_vmalloc, bool, 0444); MODULE_PARM_DESC(use_vmalloc, "Use vmalloc for PCM intermediate buffers (default: yes)."); module_param_named(skip_validation, snd_usb_skip_validation, bool, 0444); @@ -596,6 +599,7 @@ static int snd_usb_audio_create(struct usb_interface *intf, chip->dev = dev; chip->card = card; chip->setup = device_setup[idx]; + chip->generic_implicit_fb = implicit_fb[idx]; chip->autoclock = autoclock; atomic_set(&chip->active, 1); /* avoid autopm during probing */ atomic_set(&chip->usage_count, 0); diff --git a/sound/usb/implicit.c b/sound/usb/implicit.c index 16b1fb55b7b9..1d87fcdae95b 100644 --- a/sound/usb/implicit.c +++ b/sound/usb/implicit.c @@ -269,6 +269,10 @@ static int audioformat_implicit_fb_quirk(struct snd_usb_audio *chip, return 1; } + /* Try the generic implicit fb if available */ + if (chip->generic_implicit_fb) + return add_generic_implicit_fb(chip, fmt, alts); + /* No quirk */ return 0; } diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index cc338e8e2597..980287aadd36 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -51,6 +51,7 @@ struct snd_usb_audio { struct list_head mixer_list; /* list of mixer interfaces */ int setup; /* from the 'device_setup' module param */ + bool generic_implicit_fb; /* from the 'implicit_fb' module param */ bool autoclock; /* from the 'autoclock' module param */ struct usb_host_interface *ctrl_intf; /* the audio control interface */ |