On Sun, 01 Nov 2015 14:32:03 +0100,
Ondrej Zary wrote:
>
> Enable I2S docking for Dell Latitude C810.
> This allows the audio output on C/Port II to work (and probably also
> the audio inputs on C/Dock II).
>
> The volume can't be adjusted - none of the mixer controls currently
> supported affects the I2S output (they belong to the STAC9721/23 AC'97
> codec responsible for the laptop internal connectors & speakers).
>
> Signed-off-by: Ondrej Zary <[email protected]>
Applied, thanks.
Takashi
> ---
> sound/pci/maestro3.c | 15 +++++++++++----
> 1 file changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c
> index 72e89ce..965d5c6 100644
> --- a/sound/pci/maestro3.c
> +++ b/sound/pci/maestro3.c
> @@ -1932,12 +1932,19 @@ snd_m3_ac97_write(struct snd_ac97 *ac97, unsigned
> short reg, unsigned short val)
> }
>
>
> -static void snd_m3_remote_codec_config(int io, int isremote)
> +static void snd_m3_remote_codec_config(struct snd_m3 *chip, int isremote)
> {
> + int io = chip->iobase;
> + u16 tmp;
> +
> isremote = isremote ? 1 : 0;
>
> - outw((inw(io + RING_BUS_CTRL_B) & ~SECOND_CODEC_ID_MASK) | isremote,
> - io + RING_BUS_CTRL_B);
> + tmp = inw(io + RING_BUS_CTRL_B) & ~SECOND_CODEC_ID_MASK;
> + /* enable dock on Dell Latitude C810 */
> + if (chip->pci->subsystem_vendor == 0x1028 &&
> + chip->pci->subsystem_device == 0x00e5)
> + tmp |= M3I_DOCK_ENABLE;
> + outw(tmp | isremote, io + RING_BUS_CTRL_B);
> outw((inw(io + SDO_OUT_DEST_CTRL) & ~COMMAND_ADDR_OUT) | isremote,
> io + SDO_OUT_DEST_CTRL);
> outw((inw(io + SDO_IN_DEST_CTRL) & ~STATUS_ADDR_IN) | isremote,
> @@ -1989,7 +1996,7 @@ static void snd_m3_ac97_reset(struct snd_m3 *chip)
> if (!chip->irda_workaround)
> dir |= 0x10; /* assuming pci bus master? */
>
> - snd_m3_remote_codec_config(io, 0);
> + snd_m3_remote_codec_config(chip, 0);
>
> outw(IO_SRAM_ENABLE, io + RING_BUS_CTRL_A);
> udelay(20);
> --
> Ondrej Zary
>
>
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