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Support for Botic Linux driver

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T

twluke

Member
Joined 2012
wealas said:
Try running make build first.
Click to expand...

Thanks for suggestion but this caused error with the C90 warning like below:
Code: 
root@arm:/usr/src/lirc-bbb-master# make build
make -C /lib/modules/`uname -r`/build M=$PWD
make[1]: Entering directory '/usr/src/linux-headers-4.8.13-botic7-rc3'
  LD      /usr/src/lirc-bbb-master/built-in.o
  CC [M]  /usr/src/lirc-bbb-master/lirc_bbb.o
/usr/src/lirc-bbb-master/lirc_bbb.c: In function ‘is_right_chip’:
/usr/src/lirc-bbb-master/lirc_bbb.c:284:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
  int *pin_wanted = (int *)data;
  ^~~

-snip-

/usr/src/lirc-bbb-master/lirc_bbb.c:279:12: warning: ‘is_right_chip’ defined but not used [-Wunused-function]
 static int is_right_chip(struct gpio_chip *chip, void *data)
            ^~~~~~~~~~~~~
cc1: some warnings being treated as errors
scripts/Makefile.build:295: recipe for target '/usr/src/lirc-bbb-master/lirc_bbb.o' failed
make[2]: *** [/usr/src/lirc-bbb-master/lirc_bbb.o] Error 1
Makefile:1473: recipe for target '_module_/usr/src/lirc-bbb-master' failed
make[1]: *** [_module_/usr/src/lirc-bbb-master] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.8.13-botic7-rc3'
Makefile:12: recipe for target 'build' failed
make: *** [build] Error 2
The gcc I used is the latest (Debian 6.3.0-18). A problem of declaration order? Thank you.
 
T

twluke

Member
Joined 2012
T

twluke

Member
Joined 2012
wealas said:
Add
CFLAGS=-std=c99
to the top of the make file and find out...
Click to expand...

Thanks again for your help. Unfortunately this didn't work like below:

Code: 
root@arm:/usr/src/lirc-bbb-master# vi Makefile
root@arm:/usr/src/lirc-bbb-master# make build
make -C /lib/modules/`uname -r`/build M=$PWD
make[1]: Entering directory '/usr/src/linux-headers-4.8.13-botic7-rc3'
scripts/Makefile.build:49: *** CFLAGS was changed in "/usr/src/lirc-bbb-master/Makefile". Fix it to use ccflags-y.  Stop.
Makefile:1473: recipe for target '_module_/usr/src/lirc-bbb-master' failed
make[1]: *** [_module_/usr/src/lirc-bbb-master] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.8.13-botic7-rc3'
Makefile:14: recipe for target 'build' failed
I'm not sure how and where to use ccflags-y to fix.

Regards,
 
O

Oystein

Member
Joined 2009
Coming from and older Botic setup I upgraded to latest Volumio for BBB.

I can only play 48k (and multiple) files but with 44.1/88.2 I have no sound but no errors either.

Has it to do with differences between uEnv.txt and /sys/module/snd_soc_botic/parameters ?

/boot/uEnv.txt:
#Docs for Botic: http://bbb.ieero.com/
optargs=
snd_soc_botic.ext_masterclk=5
snd_soc_botic.dsd_format_switch=0
snd_soc_botic.serconfig=I---
snd_soc_botic.dai_format=16385

root@volumio:/home/volumio# for i in /sys/module/snd_soc_botic/parameters/*; do echo $i=$(cat $i); done
/sys/module/snd_soc_botic/parameters/blr_ratio=64
/sys/module/snd_soc_botic/parameters/clk_44k1=22579200
/sys/module/snd_soc_botic/parameters/clk_48k=24576000
/sys/module/snd_soc_botic/parameters/dai_format=16385
/sys/module/snd_soc_botic/parameters/dsd_format_switch=1
/sys/module/snd_soc_botic/parameters/ext_masterclk=3
/sys/module/snd_soc_botic/parameters/pinconfig=default
/sys/module/snd_soc_botic/parameters/serconfig=MMMM

I would expect this to be the same ??
I use fot 48k the internal clock and for 44.1 an external clock.
I suspect a problem here.

I do not have to mount uEnv.txt (mount /dev/mmcblk0p1 /boot/uboot --> nano /boot/uboot/uEnv.txt) as with the original Botic ?
 
A

Alex013

Member
Joined 2015
miero, thanks!
I use Volumio from the official website.
I added to uEnv.txt
snd_soc_davinci_mcasp.mute_pin=0
and have "mute" on pin P9_30
But I want to invert the "mute" signal on P9_30
I change to
snd_soc_davinci_mcasp.mute_pin=16777216
but no changes occur.
What am I doing wrong?
 
Last edited:
A

Alex013

Member
Joined 2015
My complete command line to the kernel is:
optargs=snd_soc_botic.ext_masterclk=7 snd_soc_botic.dsd_format_switch=3 snd_soc_botic.serconfig=--MM snd_soc_davinci_mcasp.mute_pin=0 snd_soc_botic.pinconfig=compat snd_soc_botic.clk_44k1=34662600 snd_soc_botic.clk_48k=36864000

If I set snd_soc_davinci_mcasp.mute_pin=1 then I get "mute" on pin P9_41
I suggested that we should addition new value to the default value "-1".
default value "-1"
data0 value "+1"
-1+(+1)=0
If I set = 0 and got "mute" on pin P9_30. So I addition "0 + 16777216 = 16777216" With this value, I also get "mute" on pin P9_30 without inversion.
If I set = 1 and also = 16777217 I get "mute" on pin P9_41. Always without inversion.

Does someone have the inverse of the "mute" signal?
 
Last edited:
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