kernel/linux.git/sound/firewire/fireface/ff.c, branch linux-7.0.y

ALSA: firewire: fireface: Use safer strscpy() instead of strcpy()

2025-07-11T07:52:40+00:00

Use a safer function strscpy() instead of strcpy() for copying to arrays. Only idiomatic code replacement, and no functional changes. Signed-off-by: Takashi Iwai Reviewed-by: Takashi Sakamoto Link: https://patch.msgid.link/20250710100727.22653-17-tiwai@suse.de

ALSA: fireface: make read-only const array for model names static

2023-06-28T09:42:55+00:00

It is preferable not to populate the constant array for constant strings on the stack. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20230627235406.289970-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: firewire: use 'GPL' string for module license contributed by Takashi Sakamoto

2023-06-12T12:38:58+00:00

In MODULE_LICENSE macro, "GPL" string obsoletes "GPL v2" string by a commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity"). This commit uses the preferable expression. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20230611144445.221529-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: fireface: add local framework to message parser

2023-01-13T08:56:37+00:00

This commit adds local framework to message parser. This is preparation for future work to pass event of knob control for Fireface 400 to user space. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20230112120954.500692-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: fireface: cease from delayed card registration

2021-06-07T15:14:48+00:00

The delayed registration of sound card instance brings less benefit than complication of kobject management. This commit ceases from it. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20210607081250.13397-9-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: fireface: add support for RME Fireface UFX (untested)

2020-05-10T10:03:50+00:00

Fireface UFX was shipped by RME GmbH in 2010, and now discontinued. Although this model has some enhanced feature which Fireface 802 doesn't have (e.g. on-board USB mass storage device class, configuration interface with color display), the functionality relevant to packet communication on IEEE 1394 bus seems to be the same as Fireface 802 (e.g. available number of channels for PCM frame in each sampling transfer frequency). With the assumption, this commit adds support for Fireface UFX. In ALSA fireface driver, these two models are handled as the same one. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20200510074301.116224-7-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: fireface: add support for RME FireFace 802

2020-05-10T10:03:49+00:00

Fireface 802 was shipped by RME GmbH in 2014. This model supports later protocol for management of isochronous communication and synchronization of sampling transmission frequency. This model consists of below ICs: * TI TSB41AB2 * Xilinx Spartan-6 FPGA XC6SLX16 * TI TMS320 C6747 * SMSC USB3250 Especially, this model just supports IEEE 1394a, against its name which evokes Fireface 800. This commit adds support for Fireface 802 (tested). Userspace applications can transfer PCM frames and MIDI messages via ALSA PCM/Rawmidi interface. I note that 4 channels for ADAt1 and ADAT2 are disabled at higher sampling transfer frequency since isochronous resources reservation fails due to bandwidth limitation of IEEE 1394a. The value read from LATTER_SYNC_STATUS register is slightly different from the one of Fireface UCX. The higher 4 bits and lower 4 bits are swapped within the same byte. Without any assist of userspace application, transmitted MIDI messages from the device are not going to be processed. For detail, please refer to my comment in code of latter protocol. $ python crpp < /sys/bus/firewire/devices/fw1/config_rom ROM header and bus information block ----------------------------------------------------------------- 400 0404ffff bus_info_length 4, crc_length 4, crc 65535 (should be 26805) 404 31333934 bus_name "1394" 408 20008000 irmc 0, cmc 0, isc 1, bmc 0, cyc_clk_acc 0, max_rec 8 (512) 40c 000a3504 company_id 000a35 | 410 38077423 device_id 0438077423 | EUI-64 000a350438077423 root directory ----------------------------------------------------------------- 414 0005ffff directory_length 5, crc 65535 (should be 9514) 418 0c0083c0 node capabilities per IEEE 1394 41c 03000a35 vendor 420 8100000b --> descriptor leaf at 44c 424 8d000007 --> eui-64 leaf at 440 428 d1000001 --> unit directory at 42c unit directory at 42c ----------------------------------------------------------------- 42c 0004ffff directory_length 4, crc 65535 (should be 45134) 430 12000a35 specifier id 434 13000005 version 438 17101800 model 43c 81000008 --> descriptor leaf at 45c eui-64 leaf at 440 ----------------------------------------------------------------- 440 0002ffff leaf_length 2, crc 65535 (should be 60131) 444 000a3504 company_id 000a35 | 448 38077423 device_id 0438077423 | EUI-64 000a350438077423 descriptor leaf at 44c ----------------------------------------------------------------- 44c 0003ffff leaf_length 3, crc 65535 (should be 469) 450 00000000 textual descriptor 454 00000000 minimal ASCII 458 524d4521 "RME!" descriptor leaf at 45c ----------------------------------------------------------------- 45c 0005ffff leaf_length 5, crc 65535 (should be 10561) 460 00000000 textual descriptor 464 00000000 minimal ASCII 468 46697265 "Fire" 46c 66616365 "face" 470 20383032 " 802" Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20200510074301.116224-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: fireface: code refactoring to decide name of sound card

2020-05-10T10:03:49+00:00

This commit uses enumeration constants as index of table for the list of name of sound card. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20200510074301.116224-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: fireface: code refactoring to add enumeration constants for model identification

2020-05-10T10:03:48+00:00

In RME fireface series, version field of unit directory in configuration ROM is used to distinguish each model. The value of field is known and it's better to use enumeration constants for code representation. This commit adds enumeration constants for model identification. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20200510074301.116224-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai

ALSA: firewire: use KBUILD_MODNAME for struct driver.name instead of string

2020-03-06T14:54:03+00:00

KBUILD_MODNAME is available to name kernel modules according to its object name. This commit uses the macro instead of string for name field of struct driver since drivers in ALSA firewire stack have the same name of each object name. Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20200306135229.11659-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai