[alsa-devel] [PATCH] Volume control quirk for QuickCam E 3500

[Alexey Fisher]

Takashi Iwai schrieb:
> At Wed, 22 Jul 2009 12:42:56 +0200,
> Alexey Fisher wrote:
>> - E3500 report cval->max more than it actually can handel, so if you
>> set 95% capture level it will be silently muted.
>> - Betwen cval->min and cval-max(real) is 2940 control units,
>> but real are only 7 with cval->res = 384.
>> - Alsa can't handel less than 10 controls, so make it more
>> and set cval->res = 192.
>>
>> Signed-off-by: Alexey Fisher <bug-track at fisher-privat.net>
> 
> They miss still break lines...
> Could you fix it?

Ok, i'll do every time checkpatch.pl. I promise :)

thanky,
Alexey



> 
> thanks,
> 
> Takashi
> 
>> ---
>>  sound/usb/usbmixer.c |   23 ++++++++++++++++++-----
>>  1 files changed, 18 insertions(+), 5 deletions(-)
>>
>> diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
>> index 5c48199..c87bcd1 100644
>> --- a/sound/usb/usbmixer.c
>> +++ b/sound/usb/usbmixer.c
>> @@ -1000,20 +1000,33 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
>>  		break;
>>  	}
>>  
>> -	/* quirk for UDA1321/N101 */
>> -	/* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
>> -	/* is not very clear from datasheets */
>> -	/* I hope that the min value is -15360 for newer firmware --jk */
>> +	/* volume control quirks */
>>  	switch (state->chip->usb_id) {
>>  	case USB_ID(0x0471, 0x0101):
>>  	case USB_ID(0x0471, 0x0104):
>>  	case USB_ID(0x0471, 0x0105):
>>  	case USB_ID(0x0672, 0x1041):
>> +	/* quirk for UDA1321/N101.
>> +	 * note that detection between firmware 2.1.1.7 (N101) 
>> +	 * and later 2.1.1.21 is not very clear from datasheets.
>> +	 * I hope that the min value is -15360 for newer firmware --jk
>> +	 */
>>  		if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
>>  		    cval->min == -15616) {
>> -			snd_printk(KERN_INFO "using volume control quirk for the UDA1321/N101 chip\n");
>> +			snd_printk(KERN_INFO
>> +				 "set volume quirk for UDA1321/N101 chip\n");
>>  			cval->max = -256;
>>  		}
>> +
>> +	case USB_ID(0x046d, 0x09a4):
>> +		if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
>> +			snd_printk(KERN_INFO
>> +				"set volume quirk for QuickCam E3500\n");
>> +			cval->min = 6080;
>> +			cval->max = 8768;
>> +			cval->res = 192;
>> +		}
>> +
>>  	}
>>  
>>  	snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
>> -- 
>> 1.6.3.3
>>
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