On Sat, Dec 22, 2018 at 03:47:12PM +0100, Stephan Gerhold wrote:
Add quirks to select the correct input map, jack-detect options and channel map to make sound work on the ASUS MeMO Pad 7 (ME176C).
Everything seems to work fine with the quirks below, although I have to say that the internal microphone quality is really bad. There are always high-pitched sounds in the background. Not sure if the hardware is just really bad or if there is any way to improve it. (I never use it so I have not investigated much further..)
Note: Although sound works out of the box, jack detection currently requires overriding the ACPI DSDT table. This is necessary because the rt5640 ACPI device (10EC5640) has the wrong GPIO listed as interrupt (one of the Bluetooth GPIOs). The correct GPIO is GPO2 0x0004 (listed as the first GPIO in the Intel(R) Audio Machine Driver - AMCR0F28 device).
At some point it might be possible to add a workaround for this using that AMCR0F28 device which has the correct GPIO. However, at the moment I still need the DSDT override for Bluetooth to work (with no simple workaround), so it's probably easiest if we just document it here for now. Eventually I will investigate this later..
Signed-off-by: Stephan Gerhold stephan@gerhold.net
sound/soc/intel/boards/bytcr_rt5640.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c index a22366ce33c4..ca8b4d5ff70f 100644 --- a/sound/soc/intel/boards/bytcr_rt5640.c +++ b/sound/soc/intel/boards/bytcr_rt5640.c @@ -428,6 +428,18 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = { BYT_RT5640_SSP0_AIF1 | BYT_RT5640_MCLK_EN), },
- {
.matches = {DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),},.driver_data = (void *)(BYT_RT5640_IN1_MAP |BYT_RT5640_JD_SRC_JD2_IN4N |BYT_RT5640_OVCD_TH_2000UA |BYT_RT5640_OVCD_SF_0P75 |BYT_RT5640_SSP0_AIF1 |BYT_RT5640_MCLK_EN),- }, { .matches = { DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
-- 2.20.1