On Mon, Aug 27, 2018 at 09:45:44AM +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/acpi/acpi_lpss.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
> index 0569972b02e1..95d9c45e13cc 100644
> --- a/drivers/acpi/acpi_lpss.c
> +++ b/drivers/acpi/acpi_lpss.c
> @@ -327,9 +327,11 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
> { "INT33FC", },
>
> /* Braswell LPSS devices */
> + { "80862286", LPSS_ADDR(lpss_dma_desc) },
> { "80862288", LPSS_ADDR(bsw_pwm_dev_desc) },
> { "8086228A", LPSS_ADDR(bsw_uart_dev_desc) },
> { "8086228E", LPSS_ADDR(bsw_spi_dev_desc) },
> + { "808622C0", LPSS_ADDR(lpss_dma_desc) },
> { "808622C1", LPSS_ADDR(bsw_i2c_dev_desc) },
>
> /* Broadwell LPSS devices */
> --
> 2.18.0
>
--
With Best Regards,
Andy Shevchenko
