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authorJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>2009-10-23 18:06:48 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-10-25 13:10:59 -0400
commitb214f11fb92713fbb07d8c1f62dd1aa8077b56c9 (patch)
tree6de9922de9f6ed88e9050f27d3234fd4e39048e6
parent02a06d3042e208cb74369838b178ca9512192be4 (diff)
ASoC: Amstrad Delta: add info about the line discipline requirement to Kconfig help text
I thought it could be usefull to add some information on how to get the device fully supported by loading a line discipline on the modem line. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--sound/soc/omap/Kconfig13
1 files changed, 12 insertions, 1 deletions
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 2dee9839be86..653a362425df 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -21,7 +21,18 @@ config SND_OMAP_SOC_AMS_DELTA
21 select SND_OMAP_SOC_MCBSP 21 select SND_OMAP_SOC_MCBSP
22 select SND_SOC_CX20442 22 select SND_SOC_CX20442
23 help 23 help
24 Say Y if you want to add support for SoC audio on Amstrad Delta. 24 Say Y if you want to add support for SoC audio device connected to
25 a handset and a speakerphone found on Amstrad E3 (Delta) videophone.
26
27 Note that in order to get those devices fully supported, you have to
28 build the kernel with standard serial port driver included and
29 configured for at least 4 ports. Then, from userspace, you must load
30 a line discipline #19 on the modem (ttyS3) serial line. The simplest
31 way to achieve this is to install util-linux-ng and use the included
32 ldattach utility. This can be started automatically from udev,
33 a simple rule like this one should do the trick (it does for me):
34 ACTION=="add", KERNEL=="controlC0", \
35 RUN+="/usr/sbin/ldattach 19 /dev/ttyS3"
25 36
26config SND_OMAP_SOC_OSK5912 37config SND_OMAP_SOC_OSK5912
27 tristate "SoC Audio support for omap osk5912" 38 tristate "SoC Audio support for omap osk5912"