From 030270ba1aa2072d2967c11129c67d9de9aa762b Mon Sep 17 00:00:00 2001 From: Ondrej Zary Date: Sun, 1 Nov 2015 14:32:03 +0100 Subject: ALSA: maestro3: Enable docking support for Dell Latitude C810 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 Signed-off-by: Takashi Iwai --- 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 72e89cedc52d..965d5c6f2fa0 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); -- cgit