On Wed, 20 Jan 2021, Hans de Goede wrote:
The Intel Bay Trail (x86/ACPI) based Lenovo Yoga Tablet 2 series use a WM5102 codec connected over SPI.
Add support for ACPI enumeration to arizona-spi so that arizona-spi can bind to the codec on these tablets.
This is loosely based on an earlier attempt (for Android-x86) at this by Christian Hartmann, combined with insights in things like the speaker GPIO from the android-x86 android port for the Lenovo Yoga Tablet 2 1051F/L [1].
[1] https://github.com/Kitsune2222/Android_Yoga_Tablet_2-1051F_Kernel
Cc: Christian Hartmann cornogle@googlemail.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Hans de Goede hdegoede@redhat.com
Changes in v4:
- Add a comment to the irq-flags override explaining that theoretically DSDTs using IRQF_TRIGGER_FALLING could be correct on boards where the IRQ controller does not support active low level interrupts
Changes in v3:
- Fix compilation error when CONFIG_ACPI is not set
Changes in v2:
- Minor coding style tweaks
- Use memcpy instead of for loop to copy gpiod_lookup-s
- Log a warning when the ACPI "CLKE" call fails
- Drop addition of acpi_device_get_match_data() call, as the code was moved over to use the generic device_get_match_data() helper in a (new in v2) preparation patch
drivers/mfd/arizona-spi.c | 127 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+)
Applied, thanks.