Liam:
It's probably going to be easier in the long run to copy your driver
> code to linux/sound/soc/at91 and then add an entry for your driver in
> the linux/sound/soc/at91/ Makefile & Kconfig
>
> e.g. for Kconfig
>
> config SND_AT91_SOC_ETI_B1_WM8731
> tristate "SoC Audio support for WM8731-based Endrelia ETI-B1
> boards"
> depends on SND_AT91_SOC && (MACH_ETI_B1 || MACH_ETI_C1)
> select SND_AT91_SOC_SSC
> select SND_SOC_WM8731
> help
> Say Y if you want to add support for SoC audio on WM8731-based
> Endrelia Technologies Inc ETI-B1 or ETI-C1 boards.
>
> This can then tell the build system (via the select keyword above) that
> your board driver depends on the AT91 platform driver and your codec.
>
> Liam
Thanks for the tips. I have rewritten my Kconfig file so that it looks like
this:
config SND_AT91_SOC
tristate "SoC Audio for the Atmel AT91 System-on-Chip"
depends on ARCH_AT91 && SND_SOC
help
Say Y or M if you want to add support for codecs attached to
the AT91 SSC interface. You will also need
to select the audio interfaces to support below.
config SND_AT91_SOC_SSC
tristate
config SND_AT91_SOC_AT91SAM9260_EK_W6811
tristate "SoC Audio support for at91sam9260ek boards with W6811 codec"
depends on SND_AT91_SOC && MACH_AT91SAM9260EK
select SND_AT91_SOC_SSC
select SND_SOC_W6811
help
Say Y if you want to add support for SoC audio on AT91SAM9260EK boards
with a W6811 codec.
config SND_AT91_SOC_ETI_SLAVE
bool "Run codec in slave Mode on AT91SAM9260EK"
depends on SND_AT91_SOC_AT91SAM9260EK_W6811
default n
help
Say Y if you want to run with the AT91 SSC generating the BCLK
and LRC signals.
...and my Makefile so that it looks like this:
# AT91 Platform Support
snd-soc-at91-objs := at91-pcm.o
snd-soc-at91-ssc-objs := at91-ssc.o
obj-$(CONFIG_SND_AT91_SOC) += snd-soc-at91.o
obj-$(CONFIG_SND_AT91_SOC_SSC) += snd-soc-at91-ssc.o
# AT91 Machine Support
snd-soc-at91sam9260ek-w6811-objs := at91sam9260ek-w6811.o
obj-$(CONFIG_SND_AT91_SOC_ETI_B1_WM8731) += snd-soc-at91sam9260ek-w6811.o
...and I renamed the source to reflect what I think you have done. The
source now lives in /linux- 2.6.22-rc1/sound/soc/at91/. I did a make clean
and a at91sam9260ek_defconfig. Then in menuconfig my new option comes up.
I have selected it and then compiled the kernel. Now, when I go to boot the
board with 2.6.22-rc1 I get:
## Booting image at 22100000 ...
Image Name: Linux-2.6.22-rc1
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1068884 Bytes = 1 MB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... OK
OK
Starting kernel ...
Uncompressing
Linux......................................................................
done, boo.
and it hangs here, which is probably more related to the kernel than to my
new config stuff. I will have to solve this so I can see what I get when the
system fully boots.
Anything above that you see as an obvious error?
Thanks.
Paul
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