.../ABI/testing/configfs-usb-gadget-uac1 | 8 +-- Documentation/usb/gadget-testing.rst | 8 +-- drivers/usb/gadget/function/f_uac1.c | 64 ++++++++----------- drivers/usb/gadget/function/u_uac1.h | 8 +-- 4 files changed, 32 insertions(+), 56 deletions(-)
From: Chris Wulff <crwulff@gmail.com>
This changes the UAPI to align with disussion of alt settings work.
fu_name is renamed to fu_vol_name, and alt settings mode names
are removed for now in favor of future work where they will be
settable in subdirectories for each alt mode.
discussion thread for api changes for alt mode settings:
https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/
Signed-off-by: Chris Wulff <crwulff@gmail.com>
---
v3: Corrected semantics of c_/p_ strings to match other c_/p_ settings.
v2: Moved discussion thread tidbit into commit message
https://lore.kernel.org/all/20240803232722.3220995-2-crwulff@gmail.com/
v1: https://lore.kernel.org/all/20240803155215.2746444-2-crwulff@gmail.com/
---
.../ABI/testing/configfs-usb-gadget-uac1 | 8 +--
Documentation/usb/gadget-testing.rst | 8 +--
drivers/usb/gadget/function/f_uac1.c | 64 ++++++++-----------
drivers/usb/gadget/function/u_uac1.h | 8 +--
4 files changed, 32 insertions(+), 56 deletions(-)
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac1 b/Documentation/ABI/testing/configfs-usb-gadget-uac1
index cf93b98b274d..64188a85592b 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-uac1
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uac1
@@ -33,13 +33,9 @@ Description:
p_it_name playback input terminal name
p_it_ch_name playback channels name
p_ot_name playback output terminal name
- p_fu_name playback functional unit name
- p_alt0_name playback alt mode 0 name
- p_alt1_name playback alt mode 1 name
+ p_fu_vol_name playback mute/volume functional unit name
c_it_name capture input terminal name
c_it_ch_name capture channels name
c_ot_name capture output terminal name
- c_fu_name capture functional unit name
- c_alt0_name capture alt mode 0 name
- c_alt1_name capture alt mode 1 name
+ c_fu_vol_name capture mute/volume functional unit name
===================== =======================================
diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst
index a89b49e639c3..7a94490fb2fd 100644
--- a/Documentation/usb/gadget-testing.rst
+++ b/Documentation/usb/gadget-testing.rst
@@ -960,15 +960,11 @@ The uac1 function provides these attributes in its function directory:
p_it_name playback input terminal name
p_it_ch_name playback channels name
p_ot_name playback output terminal name
- p_fu_name playback functional unit name
- p_alt0_name playback alt mode 0 name
- p_alt1_name playback alt mode 1 name
+ p_fu_vol_name playback mute/volume functional unit name
c_it_name capture input terminal name
c_it_ch_name capture channels name
c_ot_name capture output terminal name
- c_fu_name capture functional unit name
- c_alt0_name capture alt mode 0 name
- c_alt1_name capture alt mode 1 name
+ c_fu_vol_name capture mute/volume functional unit name
================ ====================================================
The attributes have sane default values.
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
index 06a220fb7a87..c87e74afc881 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -1251,19 +1251,19 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
strings_uac1[STR_AC_IF].s = audio_opts->function_name;
- strings_uac1[STR_USB_OUT_IT].s = audio_opts->p_it_name;
- strings_uac1[STR_USB_OUT_IT_CH_NAMES].s = audio_opts->p_it_ch_name;
- strings_uac1[STR_IO_OUT_OT].s = audio_opts->p_ot_name;
- strings_uac1[STR_FU_OUT].s = audio_opts->p_fu_name;
- strings_uac1[STR_AS_OUT_IF_ALT0].s = audio_opts->p_alt0_name;
- strings_uac1[STR_AS_OUT_IF_ALT1].s = audio_opts->p_alt1_name;
-
- strings_uac1[STR_IO_IN_IT].s = audio_opts->c_it_name;
- strings_uac1[STR_IO_IN_IT_CH_NAMES].s = audio_opts->c_it_ch_name;
- strings_uac1[STR_USB_IN_OT].s = audio_opts->c_ot_name;
- strings_uac1[STR_FU_IN].s = audio_opts->c_fu_name;
- strings_uac1[STR_AS_IN_IF_ALT0].s = audio_opts->c_alt0_name;
- strings_uac1[STR_AS_IN_IF_ALT1].s = audio_opts->c_alt1_name;
+ strings_uac1[STR_USB_OUT_IT].s = audio_opts->c_it_name;
+ strings_uac1[STR_USB_OUT_IT_CH_NAMES].s = audio_opts->c_it_ch_name;
+ strings_uac1[STR_IO_OUT_OT].s = audio_opts->c_ot_name;
+ strings_uac1[STR_FU_OUT].s = audio_opts->c_fu_vol_name;
+ strings_uac1[STR_AS_OUT_IF_ALT0].s = "Playback Inactive";
+ strings_uac1[STR_AS_OUT_IF_ALT1].s = "Playback Active";
+
+ strings_uac1[STR_IO_IN_IT].s = audio_opts->p_it_name;
+ strings_uac1[STR_IO_IN_IT_CH_NAMES].s = audio_opts->p_it_ch_name;
+ strings_uac1[STR_USB_IN_OT].s = audio_opts->p_ot_name;
+ strings_uac1[STR_FU_IN].s = audio_opts->p_fu_vol_name;
+ strings_uac1[STR_AS_IN_IF_ALT0].s = "Capture Inactive";
+ strings_uac1[STR_AS_IN_IF_ALT1].s = "Capture Active";
us = usb_gstrings_attach(cdev, uac1_strings, ARRAY_SIZE(strings_uac1));
if (IS_ERR(us))
@@ -1687,16 +1687,12 @@ UAC1_ATTRIBUTE_STRING(function_name);
UAC1_ATTRIBUTE_STRING(p_it_name);
UAC1_ATTRIBUTE_STRING(p_it_ch_name);
UAC1_ATTRIBUTE_STRING(p_ot_name);
-UAC1_ATTRIBUTE_STRING(p_fu_name);
-UAC1_ATTRIBUTE_STRING(p_alt0_name);
-UAC1_ATTRIBUTE_STRING(p_alt1_name);
+UAC1_ATTRIBUTE_STRING(p_fu_vol_name);
UAC1_ATTRIBUTE_STRING(c_it_name);
UAC1_ATTRIBUTE_STRING(c_it_ch_name);
UAC1_ATTRIBUTE_STRING(c_ot_name);
-UAC1_ATTRIBUTE_STRING(c_fu_name);
-UAC1_ATTRIBUTE_STRING(c_alt0_name);
-UAC1_ATTRIBUTE_STRING(c_alt1_name);
+UAC1_ATTRIBUTE_STRING(c_fu_vol_name);
static struct configfs_attribute *f_uac1_attrs[] = {
&f_uac1_opts_attr_c_chmask,
@@ -1724,16 +1720,12 @@ static struct configfs_attribute *f_uac1_attrs[] = {
&f_uac1_opts_attr_p_it_name,
&f_uac1_opts_attr_p_it_ch_name,
&f_uac1_opts_attr_p_ot_name,
- &f_uac1_opts_attr_p_fu_name,
- &f_uac1_opts_attr_p_alt0_name,
- &f_uac1_opts_attr_p_alt1_name,
+ &f_uac1_opts_attr_p_fu_vol_name,
&f_uac1_opts_attr_c_it_name,
&f_uac1_opts_attr_c_it_ch_name,
&f_uac1_opts_attr_c_ot_name,
- &f_uac1_opts_attr_c_fu_name,
- &f_uac1_opts_attr_c_alt0_name,
- &f_uac1_opts_attr_c_alt1_name,
+ &f_uac1_opts_attr_c_fu_vol_name,
NULL,
};
@@ -1789,19 +1781,15 @@ static struct usb_function_instance *f_audio_alloc_inst(void)
scnprintf(opts->function_name, sizeof(opts->function_name), "AC Interface");
- scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "Playback Input terminal");
- scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Playback Channels");
- scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "Playback Output terminal");
- scnprintf(opts->p_fu_name, sizeof(opts->p_fu_name), "Playback Volume");
- scnprintf(opts->p_alt0_name, sizeof(opts->p_alt0_name), "Playback Inactive");
- scnprintf(opts->p_alt1_name, sizeof(opts->p_alt1_name), "Playback Active");
-
- scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "Capture Input terminal");
- scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Capture Channels");
- scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "Capture Output terminal");
- scnprintf(opts->c_fu_name, sizeof(opts->c_fu_name), "Capture Volume");
- scnprintf(opts->c_alt0_name, sizeof(opts->c_alt0_name), "Capture Inactive");
- scnprintf(opts->c_alt1_name, sizeof(opts->c_alt1_name), "Capture Active");
+ scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "Capture Input terminal");
+ scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Capture Channels");
+ scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "Capture Output terminal");
+ scnprintf(opts->p_fu_vol_name, sizeof(opts->p_fu_vol_name), "Capture Volume");
+
+ scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "Playback Input terminal");
+ scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Playback Channels");
+ scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "Playback Output terminal");
+ scnprintf(opts->c_fu_vol_name, sizeof(opts->c_fu_vol_name), "Playback Volume");
return &opts->func_inst;
}
diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h
index 67784de9782b..feb6eb76462f 100644
--- a/drivers/usb/gadget/function/u_uac1.h
+++ b/drivers/usb/gadget/function/u_uac1.h
@@ -57,16 +57,12 @@ struct f_uac1_opts {
char p_it_name[USB_MAX_STRING_LEN];
char p_it_ch_name[USB_MAX_STRING_LEN];
char p_ot_name[USB_MAX_STRING_LEN];
- char p_fu_name[USB_MAX_STRING_LEN];
- char p_alt0_name[USB_MAX_STRING_LEN];
- char p_alt1_name[USB_MAX_STRING_LEN];
+ char p_fu_vol_name[USB_MAX_STRING_LEN];
char c_it_name[USB_MAX_STRING_LEN];
char c_it_ch_name[USB_MAX_STRING_LEN];
char c_ot_name[USB_MAX_STRING_LEN];
- char c_fu_name[USB_MAX_STRING_LEN];
- char c_alt0_name[USB_MAX_STRING_LEN];
- char c_alt1_name[USB_MAX_STRING_LEN];
+ char c_fu_vol_name[USB_MAX_STRING_LEN];
struct mutex lock;
int refcnt;
--
2.43.0On Sat, Aug 03, 2024 at 08:29:13PM -0400, crwulff@gmail.com wrote: > From: Chris Wulff <crwulff@gmail.com> > > This changes the UAPI to align with disussion of alt settings work. > > fu_name is renamed to fu_vol_name, and alt settings mode names > are removed for now in favor of future work where they will be > settable in subdirectories for each alt mode. > > discussion thread for api changes for alt mode settings: > https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/ What is now going to break due to this change? What userspace tools use the old names that need to be changed? Are you _SURE_ that you can rename external files like this and everything will keep on working? thanks, greg k-h
On Tue, Aug 13, 2024 at 4:34 AM Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: > > On Sat, Aug 03, 2024 at 08:29:13PM -0400, crwulff@gmail.com wrote: > > From: Chris Wulff <crwulff@gmail.com> > > > > This changes the UAPI to align with disussion of alt settings work. > > > > fu_name is renamed to fu_vol_name, and alt settings mode names > > are removed for now in favor of future work where they will be > > settable in subdirectories for each alt mode. > > > > discussion thread for api changes for alt mode settings: > > https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/ > > What is now going to break due to this change? What userspace tools use > the old names that need to be changed? > > Are you _SURE_ that you can rename external files like this and > everything will keep on working? Nothing is using them, since they were just introduced. I wanted to get the API changed before they make it to mainline and somebody starts using them. You just applied the patch that introduced them into usb-next on 7/31/2024, just after v6.11-rc1 so they haven't yet made it to the mainline kernel. This is the patch that introduces them: https://lore.kernel.org/all/CO1PR17MB541911B0C80D21E4B575E48CE1112@CO1PR17MB5419.namprd17.prod.outlook.com/ > > thanks, > > greg k-h
On Tue, Aug 13, 2024 at 08:56:26AM -0400, Chris Wulff wrote: > On Tue, Aug 13, 2024 at 4:34 AM Greg Kroah-Hartman > <gregkh@linuxfoundation.org> wrote: > > > > On Sat, Aug 03, 2024 at 08:29:13PM -0400, crwulff@gmail.com wrote: > > > From: Chris Wulff <crwulff@gmail.com> > > > > > > This changes the UAPI to align with disussion of alt settings work. > > > > > > fu_name is renamed to fu_vol_name, and alt settings mode names > > > are removed for now in favor of future work where they will be > > > settable in subdirectories for each alt mode. > > > > > > discussion thread for api changes for alt mode settings: > > > https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/ > > > > What is now going to break due to this change? What userspace tools use > > the old names that need to be changed? > > > > Are you _SURE_ that you can rename external files like this and > > everything will keep on working? > > Nothing is using them, since they were just introduced. I wanted to get > the API changed before they make it to mainline and somebody starts > using them. > > You just applied the patch that introduced them into usb-next on 7/31/2024, > just after v6.11-rc1 so they haven't yet made it to the mainline kernel. > > This is the patch that introduces them: > > https://lore.kernel.org/all/CO1PR17MB541911B0C80D21E4B575E48CE1112@CO1PR17MB5419.namprd17.prod.outlook.com/ Ah, thanks, I totally forgot that. Remember, I deal with about 1000+ patches a week... thanks, greg k-h
© 2016 - 2025 Red Hat, Inc.