Re: ICE1712 - no sound after suspend

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At Sun, 02 Feb 2014 23:42:36 +0200,
.::AMP::. wrote:
> 
>   I can do this after initial boot
> 
> ####
> 
> linux-fefb:/tmp # rmmod snd_ice1712
> ERROR: Module snd_ice1712 is in use
> linux-fefb:/tmp # ls -alh /dev/snd/
> total 0
> drwxr-xr-x   3 root root      180 Jan 31 11:15 .
> drwxr-xr-x  19 root root     4.1K Jan 31 11:15 ..
> drwxr-xr-x   2 root root       60 Jan 31 11:15 by-path
> crw-rw----+  1 root audio 116,  5 Jan 31 11:15 controlC0
> crw-rw----+  1 root audio 116,  2 Jan 31 11:15 midiC0D0
> crw-rw----+  1 root audio 116,  4 Jan 31 11:15 pcmC0D0c
> crw-rw----+  1 root audio 116,  3 Jan 31 11:58 pcmC0D0p
> crw-rw----+  1 root audio 116,  1 Jan 31 11:15 seq
> crw-rw----+  1 root audio 116, 33 Jan 31 11:15 timer
> linux-fefb:/tmp # rmmod -f snd_ice1712
> linux-fefb:/tmp # ls -alh /dev/snd/
> total 0
> drwxr-xr-x   2 root root       80 Jan 31 12:38 .
> drwxr-xr-x  19 root root     4.1K Jan 31 12:38 ..
> crw-rw----+  1 root audio 116,  1 Jan 31 11:15 seq
> crw-rw----+  1 root audio 116, 33 Jan 31 11:15 timer
> linux-fefb:/tmp # modprobe -fv snd_ice1712
> insmod 
> /lib/modules/3.11.6-4-desktop/kernel/sound/pci/ice1712/snd-ice1712.ko 
> dxr_enable=0
> linux-fefb:/tmp # ls -alh /dev/snd/
> total 0
> drwxr-xr-x   3 root root      180 Jan 31 12:38 .
> drwxr-xr-x  19 root root     4.1K Jan 31 12:38 ..
> drwxr-xr-x   2 root root       60 Jan 31 12:38 by-path
> crw-rw----+  1 root audio 116,  5 Jan 31 12:38 controlC0
> crw-rw----+  1 root audio 116,  2 Jan 31 12:38 midiC0D0
> crw-rw----+  1 root audio 116,  4 Jan 31 12:38 pcmC0D0c
> crw-rw----+  1 root audio 116,  3 Jan 31 12:38 pcmC0D0p
> crw-rw----+  1 root audio 116,  1 Jan 31 11:15 seq
> crw-rw----+  1 root audio 116, 33 Jan 31 11:15 timer
> 
> ####
> 
> everything works and I got sound.
> 
> DOING SUSPEND... SUSPENDED.
> 
> WAKEUP
> No sound now, my player (Audacious) tries to play something then stops, 
> no warnings or errors.
> Now doing the same as after startup
> 
> ####
> 
> linux-fefb:/tmp # rmmod snd_ice1712
> ERROR: Module snd_ice1712 is in use
> linux-fefb:/tmp # ls -alh /dev/snd/
> total 0
> drwxr-xr-x   3 root root      180 Jan 31 12:38 .
> drwxr-xr-x  19 root root     4.1K Jan 31 12:41 ..
> drwxr-xr-x   2 root root       60 Jan 31 12:38 by-path
> crw-rw----+  1 root audio 116,  5 Jan 31 12:38 controlC0
> crw-rw----+  1 root audio 116,  2 Jan 31 12:38 midiC0D0
> crw-rw----+  1 root audio 116,  4 Jan 31 12:38 pcmC0D0c
> crw-rw----+  1 root audio 116,  3 Jan 31 12:39 pcmC0D0p
> crw-rw----+  1 root audio 116,  1 Jan 31 11:15 seq
> crw-rw----+  1 root audio 116, 33 Jan 31 11:15 timer
> linux-fefb:/tmp # rmmod -f snd_ice1712
> linux-fefb:/tmp # ls -alh /dev/snd/
> total 0
> drwxr-xr-x   2 root root       80 Jan 31 12:45 .
> drwxr-xr-x  19 root root     4.1K Jan 31 12:45 ..
> crw-rw----+  1 root audio 116,  1 Jan 31 11:15 seq
> crw-rw----+  1 root audio 116, 33 Jan 31 11:15 timer
> linux-fefb:/tmp # modprobe -fv snd_ice1712
> insmod 
> /lib/modules/3.11.6-4-desktop/kernel/sound/pci/ice1712/snd-ice1712.ko 
> dxr_enable=0
> linux-fefb:/tmp # ls -alh /dev/snd/
> total 0
> drwxr-xr-x   2 root root       80 Jan 31 12:45 .
> drwxr-xr-x  19 root root     4.1K Jan 31 12:45 ..
> crw-rw----+  1 root audio 116,  1 Jan 31 11:15 seq
> crw-rw----+  1 root audio 116, 33 Jan 31 11:15 timer
> 
> ####
> 
> No device nodes are created but why, this is the same thing I do as 
> before doing a regular suspend?
> I can't pass this step for some reason.
> 
> Takashi:
> "The suspend/resume is simply not supported for ice1712 devices yet. 
> It's a looongtime TODO."
> 
> Why not, what is the difference between the boot process ALSA init and 
> the manual module insert (modprobe/insmod) or daemon reload.
> What I am trying to do is basically write a small script that does the 
> same thing that is happening during boot time and I can't find my way of 
> doing this.

The proper suspend/resume needs to re-setup the codecs and restore the
mixer and other settings in the kernel driver.  This is the missing
piece in ice1712 driver.


Takashi

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