BMC/Intel-BMC/linux.git/sound/usb/format.c, branch dev-4.17

ALSA: usb-audio: silence a static checker warning

2018-03-29T09:08:04+00:00

We recently made "format" a u64 variable so now static checkers complain that this shift will wrap around if format is more than 31. I don't think it makes a difference for runtime, but it's simple to silence the warning. Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai

ALSA: usb: initial USB Audio Device Class 3.0 support

2018-03-21T10:46:33+00:00

Recently released USB Audio Class 3.0 specification introduces many significant changes comparing to previous versions, like - new Power Domains, support for LPM/L1 - new Cluster descriptor - changed layout of all class-specific descriptors - new High Capability descriptors - New class-specific String descriptors - new and removed units - additional sources for interrupts - removed Type II Audio Data Formats - ... and many other things (check spec) It also provides backward compatibility through multiple configurations, as well as requires mandatory support for BADD (Basic Audio Device Definition) on each ADC3.0 compliant device This patch adds initial support of UAC3 specification that is enough for Generic I/O Profile (BAOF, BAIF) device support from BADD document. Signed-off-by: Ruslan Bilovol Reviewed-by: Greg Kroah-Hartman Signed-off-by: Takashi Iwai

ALSA: usb-audio: rmove print for failure of kmalloc

2016-08-22T09:41:02+00:00

kmalloc already print similar error once failing to alloc enough memory, so let's remove this dump here. Signed-off-by: Shawn Lin Signed-off-by: Takashi Iwai

ALSA: usb-audio: Fix audio output on Roland SC-D70 sound module

2015-04-21T05:59:10+00:00

Roland SC-D70 reports its device class as vendor specific class and the quirk QUIRK_AUDIO_FIXED_ENDPOINT was used for audio output. In the quirks table the sampling rate was hard-coded to 44100 Hz and therefore not worked when the sound module was in 48000 Hz mode. In this change the quirk is changed to QUIRK_AUDIO_STANDARD_INTERFACE but as the sound module reports incorrect bSubframeSize in its descriptors, additional change is made in format.c to detect it and to override it (which uses the existing code for Edirol SD-90). Tested both when the sound module was in 44100 Hz mode and 48000 Hz mode and both audio input and output. MIDI related part of the driver is not touched. Signed-off-by: Takamichi Horikawa Signed-off-by: Takashi Iwai

ALSA: usb-audio: Use standard printk helpers

2014-02-26T15:45:34+00:00

Convert with dev_err() and co from snd_printk(), etc. As there are too deep indirections (e.g. ep->chip->dev->dev), a few new local macros, usb_audio_err() & co, are introduced. Also, the device numbers in some messages are dropped, as they are shown in the prefix automatically. Signed-off-by: Takashi Iwai

ALSA: usb-audio: Fix Creative VF0420 rate

2014-01-14T13:23:47+00:00

Creative Live! Cam Vista IM (VF0420) reports rate of 16kHz while working at 8kHz. The patch adds its USB ID to the existing quirk. Signed-off-by: Pavel Hofman Signed-off-by: Takashi Iwai

ALSA: usb-audio: store protocol version in struct audioformat

2013-06-27T19:59:47+00:00

Instead of reading bInterfaceProtocol from the descriptor whenever it's needed, store this value in the audioformat structure. Besides simplifying some code, this will allow us to correctly handle vendor- specific devices where the descriptors are marked with other values. Signed-off-by: Clemens Ladisch

ALSA: pcm_format_to_bits strong-typed conversion

2013-04-29T11:36:15+00:00

Add a function to handle conversion from snd_pcm_format_t to bitwise with proper typing. Change such conversions to use this function and silence sparse warnings. Signed-off-by: Eldad Zack Signed-off-by: Takashi Iwai

ALSA: snd-usb: add quirks handler for DSD streams

2013-04-18T08:03:53+00:00

Unfortunately, none of the UAC standards provides a way to identify DSD (Direct Stream Digital) formats. Hence, this patch adds a quirks handler to identify USB interfaces that are capable of handling DSD. That quirks handler can augment the already parsed formats bit-field, by any of the new SNDRV_PCM_FMTBIT_DSD_{U8_U16} and setting the dsd_dop flag in the audio format, if the driver should take care for the DOP byte stuffing. The only devices that are known to work with this are the ones with a 'Playback Designs' vendor id. Signed-off-by: Daniel Mack Signed-off-by: Takashi Iwai

ALSA: usb-audio: UAC2: do clock validity check earlier

2013-04-04T06:30:59+00:00

Move the check that parse_audio_format_rates_v2() do after receiving the clock source entity ID directly into the find function and add a validation flag to the function. This patch does not introduce any logic flow change. It is provided to allow introducing automatic clock switching easier later. By moving this uac_clock_source_is_valid callsite, 2 additional callsites can be avoided. Signed-off-by: Eldad Zack Signed-off-by: Takashi Iwai