Re: [linux-dvb] Support of Nova S SE DVB card missing

[Eberhard Kaltenhaeuser <ke2705@gmx.de>]

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Hello,

against my expectation, the Nova-S SE card does not work, although the 
card is recognized by the kernel. Frontend modul is loaded, but no 
signal can be received. So VDR exists (Emergency exit) when switching to 
this device (i.e. to record something)

Any suggestions?
Eberhard

Oliver Endriss wrote:

>e9hack wrote:
>  
>
>>Eberhard Kaltenhaeuser schrieb:
>>    
>>
>>>Actual kernel does not support the Hauppauge WinTV Nova S SE PCI card 
>>>anymore:
>>>
>>>      
>>>
>>I think it is a problem of this changeset http://linuxtv.org/hg/v4l-dvb/rev/358d281e6a3d 
>>from Patrick Boettcher. The S5H1420 isn't able to understand repeated start conditions. 
>>The i2c-read code was changed from:
>>
>>	if ((ret = i2c_transfer (state->i2c, &msg1, 1)) != 1)
>>		return ret;
>>
>>	if ((ret = i2c_transfer (state->i2c, &msg2, 1)) != 1)
>>		return ret;
>>
>>to:
>>	if (state->config->repeated_start_workaround) {
>>		ret = i2c_transfer(state->i2c, msg, 3);
>>		if (ret != 3)
>>			return ret;
>>	} else {
>>		ret = i2c_transfer(state->i2c, &msg[1], 2);
>>		if (ret != 2)
>>			return ret;
>>	}
>>    
>>
>
>I think you are right.
>
>Btw, I don't understand Patrick's workaround.
>
>As the tuner does not support repeated start conditions, the solution
>is to send two separate messages, as it was before.
>
>Does the attached patch fix the problem?
>
>CU
>Oliver
>
>  
>
>------------------------------------------------------------------------
>
>diff -r 1760a612cc98 linux/drivers/media/dvb/frontends/s5h1420.c
>--- a/linux/drivers/media/dvb/frontends/s5h1420.c	Sun Aug 03 05:02:35 2008 +0200
>+++ b/linux/drivers/media/dvb/frontends/s5h1420.c	Sat Aug 23 17:07:01 2008 +0200
>@@ -94,8 +94,11 @@ static u8 s5h1420_readreg(struct s5h1420
> 		if (ret != 3)
> 			return ret;
> 	} else {
>-		ret = i2c_transfer(state->i2c, &msg[1], 2);
>-		if (ret != 2)
>+		ret = i2c_transfer(state->i2c, &msg[1], 1);
>+		if (ret != 1)
>+			return ret;
>+		ret = i2c_transfer(state->i2c, &msg[2], 1);
>+		if (ret != 1)
> 			return ret;
> 	}
> 
>  
>
>------------------------------------------------------------------------
>
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>

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