Re: au88x0 modem

[Raymond <rayau@netvigator.com>]

Philipp Matthias Hahn wrote:
> Hello!
> 
> On Fri, Sep 16, 2005 at 04:55:35PM +0800, Raymond wrote:
> 
>>>>2. GPIO
>>>>
>>>>Probably we are lucky and au88x0 implements it in AC97 way, try to write
>>>>mc97 registers via /proc (for this you need build drivers in debug mode,
>>>>'--with-debug=detect' is ok):
>>>># echo 42 ffff > /proc/asound/card0/codec97#0/mc97#1-1+regs
>>>># echo 42 0 > /proc/asound/card0/codec97#0/mc97#1-1+regs
>>>># echo 54 1 > /proc/asound/card0/codec97#0/mc97#1-1+regs
>>>
>>>Sorry, I did echo those values and read mc97#1-1+regs, but no values
>>>changed.
>>
>>This may mean the patched  vortex_codec_read() works but 
>>vortex_codec_write() is still not working as expected.
>>
>>Do system log show any timeout error of the codec ?
> 
> 
> No messages.
> 
> BYtE
> Philipp


Add printk to dump the ac97 read/write to system log


  		VORTEX_CODEC_WRITE);

  	/* Flush Caches. */
  	hwread(card->mmio, VORTEX_CODEC_IO);
+	printk(KERN_INFO "vortex_codec_write %d %.2x : 
%.4x\n",codec->num,addr,data);
  }

  static unsigned short vortex_codec_read(ac97_t * codec, unsigned short 
addr)
@@ -2567,7 +2556,7 @@
  		}
  	} while ((data & VORTEX_CODEC_ADDMASK) !=
  		 (addr << VORTEX_CODEC_ADDSHIFT));
-
+	printk(KERN_INFO "vortex_codec_read  %d %.2x : 
%.4x\n",codec->num,addr,data & VORTEX_CODEC_DATMASK);
  	/* return data. */
  	return (u16) (data & VORTEX_CODEC_DATMASK);
  }



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