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Date: Thu, 06 Dec 2012 17:58:10 -0500
From: Matthew Gyurgyik <matthew@pyther.net>
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To: =?ISO-8859-1?Q?Frank_Sch=E4fer?= <fschaefer.oss@googlemail.com>
CC: Antti Palosaari <crope@iki.fi>,
	Devin Heitmueller <dheitmueller@kernellabs.com>,
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Subject: Re: em28xx: msi Digivox ATSC board id [0db0:8810]
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On 12/06/2012 04:49 PM, Frank Schäfer wrote:
>
>
> Did you switch back to
>
>      .mpeg_mode      = LGDT3305_MPEG_SERIAL,
>      .tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
>
> in struct lgdt3305_config em2874_lgdt3305_dev (em28xx-dvb.c) before
> testing this ?
>
> You could also play with the other gpio settings.
>
> And the last idea (at the moment):
>
> +    /* 0db0:8810 MSI DIGIVOX ATSC (HU345-Q)
> +     * Empia EM2874B + TDA18271HDC2 + LGDT3305 */
> +    [EM2874_BOARD_MSI_DIGIVOX_ATSC] = {
> +        .name         = "MSI DIGIVOX ATSC",
> +        .dvb_gpio     = msi_digivox_atsc,
> +        .has_dvb      = 1,
> +        .tuner_type   = TUNER_ABSENT,
> +        .ir_codes     = RC_MAP_MSI_DIGIVOX_III,        /* just a guess
> from looking at the picture */
> +        .xclk         = EM28XX_XCLK_FREQUENCY_12MHZ,    /* TODO */
> +        .i2c_speed    = EM2874_I2C_SECONDARY_BUS_SELECT |
> +                EM28XX_I2C_CLK_WAIT_ENABLE |
> +                EM28XX_I2C_FREQ_100_KHZ,
> +    },
>
> => change .xclk to 0x0f.
> We know that 12MHz is the right xclk setting, which means 0x07. But OTOH
> the Windows drivers seems to use 0x0f instead and we don't what 0x0f
> means...
>
> Hope this helps,
> Frank
>

I lied, it works! I must have forgotten to do run make modules_install 
or something! This patch accurately states my current code changes: 
http://pyther.net/a/digivox_atsc/diff-Dec-06-v1.patch

I will do more testing and try more channels. Playing the stream with 
mplayer, the audio is clearly out-of-sync. But if I can the stream to a 
file, it doesn't seem out-of-sync but I will do more testing and report 
back.