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usb: gadget: f_uac1: Change volume name and remove alt names

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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>
Link: https://lore.kernel.org/r/20240804002912.3293177-2-crwulff@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chris Wulff 2024-08-03 20:29:13 -04:00 committed by Greg Kroah-Hartman
parent c26cee817f
commit 82313624b2
4 changed files with 30 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Documentation/ABI/testing/configfs-usb-gadget-uac1
View File

@ -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
===================== =======================================

8
Documentation/usb/gadget-testing.rst
View File

@ -971,15 +971,11 @@ 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.

60
drivers/usb/gadget/function/f_uac1.c
View File

@ -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_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->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_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->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), "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->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;
}

8
drivers/usb/gadget/function/u_uac1.h
View File

@ -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;