kernel.git/drivers/usb/gadget/function/f_uac1.c, branch linux-6.12.y

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

2024-08-13T16:11:35Z

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 Link: https://lore.kernel.org/r/20240804002912.3293177-2-crwulff@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: Expose all string descriptors through configfs.

2024-07-31T08:41:06Z

This makes all string descriptors configurable for the UAC1 gadget so the user can configure names of terminals/controls/alt modes. Signed-off-by: Chris Wulff Link: https://lore.kernel.org/r/CO1PR17MB541911B0C80D21E4B575E48CE1112@CO1PR17MB5419.namprd17.prod.outlook.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: add missing MODULE_DESCRIPTION() macros

2024-06-20T17:18:19Z

make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/libcomposite.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_acm.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ss_lb.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/u_serial.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_serial.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_obex.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/u_ether.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ncm.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ecm.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_phonet.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_eem.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ecm_subset.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_rndis.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_mass_storage.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_fs.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac1.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac1_legacy.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac2.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uvc.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_midi.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_midi2.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_hid.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_printer.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_tcm.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/legacy/g_zero.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/legacy/g_midi.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/legacy/g_dbgp.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson Link: https://lore.kernel.org/r/20240605-md-drivers-usb-gadget-v1-1-29847a46aad3@quicinc.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: Replace snprintf() with the safer scnprintf() variant

2023-12-15T12:55:29Z

There is a general misunderstanding amongst engineers that {v}snprintf() returns the length of the data *actually* encoded into the destination array. However, as per the C99 standard {v}snprintf() really returns the length of the data that *would have been* written if there were enough space for it. This misunderstanding has led to buffer-overruns in the past. It's generally considered safer to use the {v}scnprintf() variants in their place (or even sprintf() in simple cases). So let's do that. Link: https://lwn.net/Articles/69419/ Link: https://github.com/KSPP/linux/issues/105 Cc: Ruslan Bilovol Cc: Julian Scheel Cc: Bryan Wu Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20231213164246.1021885-3-lee@kernel.org Signed-off-by: Greg Kroah-Hartman

usb: f_uac1: adds support for SS and SSP

2023-12-15T12:54:37Z

Patch adds support of SS and SSP speed. Tested with rockchip rk3399 dwc3 Signed-off-by: Perr Zhang Link: https://lore.kernel.org/r/20231213112106.605260-1-strongbox8@zoho.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: allow changing interface name via configfs

2022-01-26T13:10:40Z

This adds "function_name" configfs entry to change string value of the iInterface field. This field will be shown in Windows' audio settings panel, so being able to change it is useful. It will default to "AC Interface" just as before if unchanged. Signed-off-by: Yunhao Tian Link: https://lore.kernel.org/r/20220122112446.1415547-1-t123yh.xyz@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: Add suspend callback

2022-01-26T13:06:09Z

Add suspend callback to f_uac1 function, calling corresponding method of u_audio in order to stop the respective PCM streams and to notify subscribed clients about the stop. Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-11-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: Support multiple sampling rates

2022-01-26T13:06:08Z

A list of sampling rates can be specified via configfs. All enabled sampling rates are sent to the USB host on request. When the host selects a sampling rate the internal active rate is updated. Config strings with single value stay compatible with the previous version. Multiple samplerates passed as configuration arrays to g_audio module when built for f_uac1. Signed-off-by: Julian Scheel Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-7-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: u_audio: Move dynamic srate from params to rtd

2022-01-26T13:06:08Z

Parameters uac_params.p_srate/c_srate are dynamic now and are not part of parametric configuration anymore. Move them to the runtime struct uac_rtd_params for each stream. Suggested-by: John Keeping Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-4-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: u_audio: Support multiple sampling rates

2022-01-26T13:06:08Z

Implement support for multiple sampling rates in u_audio part of the audio gadget. The currently configured rates are exposed through read-only amixer controls 'Capture Rate' and 'Playback Rate'. Signed-off-by: Julian Scheel Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-3-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman