[alsa-devel] [PATCH 17/25] ALSA: firewire-tascam: add skeleton for TASCAM FireWire series

[Takashi Iwai]

On Thu, 13 Aug 2015 02:20:13 +0200,
Takashi Sakamoto wrote:
> 
> This commit adds a new driver for TASCAM FireWire series. In this commit,
> this driver just creates/removes card instance according to bus event.
> More functionalities will be added in following commits.
> 
> TASCAM FireWire series consists of:
>  * PDI 1394P23 for IEEE 1394 PHY layer
>  * PDI 1394L40 for IEEE 1394 LINK layer and IEC 61883 interface
>  * XILINX XC9536XL
>  * XILINX Spartan-II XC2S100
>  * ATMEL AT91M42800A
> 
> Ilya Zimnovich had investigated TASCAM FireWire series in 2011, and
> discover some features of his FW-1804. You can see a part of his research
> in FFADO project.
> http://subversion.ffado.org/wiki/Tascam
> 
> A part of my work is based on Ilya's investigation, while this series
> doesn't support the FW-1804, because of a lack of config ROM
> information and its protocol detail, especially for PCM channels.
> 
> I observed that FW-1884 and FW-1082 don't work properly with 1394 OHCI
> controller based on VT6315. The controller can actually communicate packets
> to these models, while these models generate no sounds. It may be due to
> the PHY/LINK layer issues. Using 1394 OHCI controller produced by the other
> vendors such as Texas Instruments may enable to work. Or adding another
> node on the bus.
> 
> Signed-off-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>
> ---
>  sound/firewire/Kconfig         |  11 +++
>  sound/firewire/Makefile        |   1 +
>  sound/firewire/tascam/Makefile |   2 +
>  sound/firewire/tascam/tascam.c | 155 +++++++++++++++++++++++++++++++++++++++++
>  sound/firewire/tascam/tascam.h |  28 ++++++++
>  5 files changed, 197 insertions(+)
>  create mode 100644 sound/firewire/tascam/Makefile
>  create mode 100644 sound/firewire/tascam/tascam.c
>  create mode 100644 sound/firewire/tascam/tascam.h
> 
> diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig
> index 80f3b57..605cb91 100644
> --- a/sound/firewire/Kconfig
> +++ b/sound/firewire/Kconfig
> @@ -135,4 +135,15 @@ config SND_FIREWIRE_DIGI00X
>  	 To compile this driver as a module, choose M here: the module
>  	 will be called snd-firewire-digi00x.
>  
> +config SND_FIREWIRE_TASCAM
> +	tristate "TASCAM FireWire series support"
> +	select SND_FIREWIRE_LIB
> +	help
> +	 Say Y here to include support for TASCAM.
> +	  * FW-1884
> +	  * FW-1082
> +
> +	 To compile this driver as a module, choose M here: the module
> +	 will be called snd-firewire-tascam.
> +
>  endif # SND_FIREWIRE
> diff --git a/sound/firewire/Makefile b/sound/firewire/Makefile
> index 5325d15..6ae50f5 100644
> --- a/sound/firewire/Makefile
> +++ b/sound/firewire/Makefile
> @@ -12,3 +12,4 @@ obj-$(CONFIG_SND_SCS1X) += snd-scs1x.o
>  obj-$(CONFIG_SND_FIREWORKS) += fireworks/
>  obj-$(CONFIG_SND_BEBOB) += bebob/
>  obj-$(CONFIG_SND_FIREWIRE_DIGI00X) += digi00x/
> +obj-$(CONFIG_SND_FIREWIRE_TASCAM) += tascam/
> diff --git a/sound/firewire/tascam/Makefile b/sound/firewire/tascam/Makefile
> new file mode 100644
> index 0000000..29bdbce
> --- /dev/null
> +++ b/sound/firewire/tascam/Makefile
> @@ -0,0 +1,2 @@
> +snd-firewire-tascam-objs := tascam.o
> +obj-m += snd-firewire-tascam.o

This should be
obj-$(CONFIG_SND_FIREWIRE_TASCAM) += snd-firewire-tascam.o


Takashi