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| author |   Hans de Goede <hdegoede@redhat.com> | 2021-12-23 20:07:50 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-12-25 12:41:06 +0100 |
| commit | 55fa3c9665bfcf32b21af8ecdeb48d5c5177d8d7 (patch) | |
| tree | b73d04d84a08922132451d7ccd4e885cc70ad619 /drivers/platform/x86/Kconfig | |
| parent | tools/power/x86/intel-speed-select: v1.11 release (diff) | |
| download | linux-dev-55fa3c9665bfcf32b21af8ecdeb48d5c5177d8d7.tar.xz linux-dev-55fa3c9665bfcf32b21af8ecdeb48d5c5177d8d7.zip | |
platform/x86: x86-android-tablets: New driver for x86 Android tablets
x86 tablets which ship with Android as (part of) the factory image
typically have various problems with their DSDTs. The factory kernels
shipped on these devices typically have device addresses and GPIOs
hardcoded in the kernel, rather then specified in their DSDT.
With the DSDT containing a random collection of devices which may or
may not actually be present as well as missing devices which are
actually present.
This driver, which loads only on affected models based on DMI matching,
adds DMI based instantiating of kernel devices for devices which are
missing from the DSDT, fixing e.g. battery monitoring, touchpads and/or
accelerometers not working.
Note the Kconfig help text also refers to "various fixes" ATM there are
no such fixes, but there are also known cases where entries are present
in the DSDT but they contain bugs, such as missing/wrong GPIOs. The plan
is to also add fixes for things like this here in the future.
This is the least ugly option to get these devices to fully work and to
do so without adding any extra code to the main kernel image (vmlinuz)
when built as a module.
Link: https://lore.kernel.org/platform-driver-x86/20211031162428.22368-1-hdegoede@redhat.com/
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211223190750.397487-1-hdegoede@redhat.com
Diffstat (limited to 'drivers/platform/x86/Kconfig')
| -rw-r--r-- | drivers/platform/x86/Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index afa0f9b0141d..b9a73df1820f 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1004,6 +1004,23 @@ config TOUCHSCREEN_DMI the OS-image for the device. This option supplies the missing info. Enable this for x86 tablets with Silead or Chipone touchscreens. +config X86_ANDROID_TABLETS + tristate "X86 Android tablet support" + depends on I2C && ACPI && GPIOLIB + help + X86 tablets which ship with Android as (part of) the factory image + typically have various problems with their DSDTs. The factory kernels + shipped on these devices typically have device addresses and GPIOs + hardcoded in the kernel, rather than specified in their DSDT. + + With the DSDT containing a random collection of devices which may or + may not actually be present. This driver contains various fixes for + such tablets, including instantiating kernel devices for devices which + are missing from the DSDT. + + If you have a x86 Android tablet say Y or M here, for a generic x86 + distro config say M here. + config FW_ATTR_CLASS tristate |