Re: [PATCH v2 00/10] add linux driver for chip TLG2300

[Huang Shijie <shijie8@gmail.com>]

> No, I don't meant that.
>
> The differences of FM radio standards are basically the preemphasis and the
> frequency ranges.
>
> For frequency ranges, V4L2_TUNER_RADIO allows specifying the maximum/minimum values.
>
> For preemphasis, you should implement V4L2_CID_TUNE_PREEMPHASIS ctrl. This
> CTRL has 3 states:
>
>          static const char *tune_preemphasis[] = {
>                  "No preemphasis",
>                  "50 useconds",
>                  "75 useconds",
>                  NULL,
>          };
>
> At v4l2-common.c, there are some functions that helps to implement it
> at the driver, like:
> 	v4l2_ctrl_get_menu, v4l2_ctrl_get_name and v4l2_ctrl_query_fill.
>    
I meet a problem now. :(

Even I add the ctrl to the tlg2300 driver, there is no application to
test it :

[1] The Mplayer do not check the ctrl except the "vulume " or "mute".
[2] I do  not know how to use the VLC to listen the radio with ALSA, I
tried many times, but failed. Does someone know this ?

Btw: I will be on my vacation for the following two weeks, I will come 
back to
work at 20th of this month. I afraid I can not finish the patches to 
remove  the
country code in the two days(today and tomorrow).


> Take a look at si4713-i2c.c for an example on how to use it.
>
> Ah, please submit those changes as another series of patches. This helps me
> to not needing to review the entire changeset again.
>
> Cheers,
> Mauro
>
>    
Best Regards
Huang Shijie