diff options
| author | Pavel Hofman <pavel.hofman@ivitera.com> | 2021-10-22 16:03:39 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-25 09:19:21 +0200 |
| commit | d9f273484358285b448aff65bffeb361d0b1f917 (patch) | |
| tree | 9a93b153f5ca2c1d6cafafe574098fb17b71b771 | |
| parent | 33ef298651e9fc0ed42c6b4140d40718a0e03ca2 (diff) | |
| download | linux-d9f273484358285b448aff65bffeb361d0b1f917.tar.bz2 | |
usb:gadget: f_uac1: fixed sync playback
The u_audio param fb_max was not set to its default value in f_uac1.c.
As a result the maximum value of Playback Pitch ctl was kept at 1000000,
not allowing to set faster playback pitch for UAC1.
The setting required moving the default constant UAC2_DEF_FB_MAX from
u_uac2.h to FBACK_FAST_MAX in u_audio.h as that header is common for
f_uac1.c and f_uac2.c.
Fixes: 6fec018a7e70 ("usb: gadget: u_audio.c: Adding Playback Pitch ctl for sync playback")
Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20211022140339.248669-1-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/gadget/function/f_uac1.c | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/f_uac2.c | 3 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/u_audio.h | 10 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/u_uac2.h | 1 |
4 files changed, 11 insertions, 4 deletions
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index 5b3502df4e13..03f50643fbba 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -1321,6 +1321,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) audio->params.c_fu.volume_res = audio_opts->c_volume_res; } audio->params.req_number = audio_opts->req_number; + audio->params.fb_max = FBACK_FAST_MAX; if (FUOUT_EN(audio_opts) || FUIN_EN(audio_opts)) audio->notify = audio_notify; diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index f8923425b079..36fa6ef0581b 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include "u_audio.h" + #include "u_uac2.h" /* UAC2 spec: 4.1 Audio Channel Cluster Descriptor */ @@ -1932,7 +1933,7 @@ static struct usb_function_instance *afunc_alloc_inst(void) opts->c_volume_res = UAC2_DEF_RES_DB; opts->req_number = UAC2_DEF_REQ_NUM; - opts->fb_max = UAC2_DEF_FB_MAX; + opts->fb_max = FBACK_FAST_MAX; return &opts->func_inst; } diff --git a/drivers/usb/gadget/function/u_audio.h b/drivers/usb/gadget/function/u_audio.h index 001a79a46022..8dfdae1721cd 100644 --- a/drivers/usb/gadget/function/u_audio.h +++ b/drivers/usb/gadget/function/u_audio.h @@ -14,11 +14,17 @@ /* * Same maximum frequency deviation on the slower side as in * sound/usb/endpoint.c. Value is expressed in per-mil deviation. - * The maximum deviation on the faster side will be provided as - * parameter, as it impacts the endpoint required bandwidth. */ #define FBACK_SLOW_MAX 250 +/* + * Maximum frequency deviation on the faster side, default value for UAC1/2. + * Value is expressed in per-mil deviation. + * UAC2 provides the value as a parameter as it impacts the endpoint required + * bandwidth. + */ +#define FBACK_FAST_MAX 5 + /* Feature Unit parameters */ struct uac_fu_params { int id; /* Feature Unit ID */ diff --git a/drivers/usb/gadget/function/u_uac2.h b/drivers/usb/gadget/function/u_uac2.h index a73b35774c44..e0c8e3513bfd 100644 --- a/drivers/usb/gadget/function/u_uac2.h +++ b/drivers/usb/gadget/function/u_uac2.h @@ -30,7 +30,6 @@ #define UAC2_DEF_RES_DB (1*256) /* 1 dB */ #define UAC2_DEF_REQ_NUM 2 -#define UAC2_DEF_FB_MAX 5 #define UAC2_DEF_INT_REQ_NUM 10 struct f_uac2_opts { |