gpio: add generic Intel GPIO pin controller framework#2205
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I did a quick pass and commented on some things that stood out to me. I'll take a more in-depth look once I have the time.
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Add a platform-independent driver framework for Intel GPIO pin controllers found on modern Intel SoCs. The driver accesses GPIO pad registers through ACPI-provided memory-mapped resources and implements the gpio interface [1] including pin enumeration, capability reporting, configuration, and read/write/toggle operations. A common data model of communities and pad groups allows individual SoC-specific drivers to supply their own pad tables and ACPI hardware IDs while sharing all register-level logic. [1] https://wiki.freebsd.org/GPIO Signed-off-by: YannickV <Y.Vossen@beckhoff.com>
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Add a GPIO driver for the Intel Alder Lake-N platform based on the generic intelgpio framework. The driver provides pad group definitions for four GPIO communities covering groups GPP_A through GPP_T, vGPIO and HVCMOS, and matches ACPI hardware IDs INTC1056, INTC1057 and INTC1085. The kernel module build infrastructure and the wiring into files.x86 are included. Signed-off-by: YannickV <Y.Vossen@beckhoff.com>
Add a GPIO driver for the Intel Tiger Lake-H platform based on the generic intelgpio framework. The driver defines five GPIO communities with pad groups GPP_A through GPP_K, vGPIO and JTAG, and matches ACPI hardware ID INT34C6. The kernel module build infrastructure and the wiring into files.x86 are included. Signed-off-by: YannickV <Y.Vossen@beckhoff.com>
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Add a platform-independent driver framework for Intel GPIO pin controllers
found on modern Intel SoCs. The driver accesses GPIO pad registers through
ACPI-provided memory-mapped resources and implements the gpio interface [1]
including pin enumeration, capability reporting, configuration, and
read/write/toggle operations. A common data model of communities and pad groups
allows individual SoC-specific drivers to supply their own pad tables and ACPI
hardware IDs while sharing all register-level logic.
[1] https://wiki.freebsd.org/GPIO