On Mon, Aug 27, 2018 at 09:45:45AM +0200, Hans de Goede wrote:
> Bay and Cherry Trail DSTDs represent a different set of devices depending
> on which OS the device think it is booting. One set of decices for Windows
> and another set of devices for Android which targets the Android-x86 Linux
> kernel fork (which e.g. used to have its own display driver instead of
> using the i915 driver).
>
> Which set of devices we are actually going to get is out of our control,
> this is controlled by the ACPI OSID variable, which gets either set through
> an EFI setup option, or sometimes is autodetected. So we need to support
> both.
>
> This commit adds support for the 80862286 and 808622C0 ACPI HIDs which we
> get for the first resp. second DMA controller on Cherry Trail devices when
> OSID is set to Android.
>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> drivers/dma/dw/platform.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
> index f62dd0944908..f01b2c173fa6 100644
> --- a/drivers/dma/dw/platform.c
> +++ b/drivers/dma/dw/platform.c
> @@ -284,6 +284,8 @@ MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);
> #ifdef CONFIG_ACPI
> static const struct acpi_device_id dw_dma_acpi_id_table[] = {
> { "INTL9C60", 0 },
> + { "80862286", 0 },
> + { "808622C0", 0 },
> { }
> };
> MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);
> --
> 2.18.0
>
--
With Best Regards,
Andy Shevchenko
