docs: extcon: convert it to ReST and move to ACPI dir
The intel-int3496.txt file is a documentation for an ACPI driver. There's no reason to keep it on a separate directory. So, instead of keeping it on some random location, move it to a sub-directory inside the ACPI documentation dir, renaming it to .rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -1,5 +1,6 @@
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=====================================================
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Intel INT3496 ACPI device extcon driver documentation
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-----------------------------------------------------
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=====================================================
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The Intel INT3496 ACPI device extcon driver is a driver for ACPI
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devices with an acpi-id of INT3496, such as found for example on
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@ -13,15 +14,20 @@ between an USB host and an USB peripheral controller.
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The ACPI devices exposes this functionality by returning an array with up
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to 3 gpio descriptors from its ACPI _CRS (Current Resource Settings) call:
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Index 0: The input gpio for the id-pin, this is always present and valid
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Index 1: The output gpio for enabling Vbus output from the device to the otg
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======= =====================================================================
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Index 0 The input gpio for the id-pin, this is always present and valid
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Index 1 The output gpio for enabling Vbus output from the device to the otg
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port, write 1 to enable the Vbus output (this gpio descriptor may
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be absent or invalid)
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Index 2: The output gpio for muxing of the data pins between the USB host and
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Index 2 The output gpio for muxing of the data pins between the USB host and
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the USB peripheral controller, write 1 to mux to the peripheral
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controller
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======= =====================================================================
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There is a mapping between indices and GPIO connection IDs as follows
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======= =======
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id index 0
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vbus index 1
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mux index 2
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======= =======
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@ -24,3 +24,4 @@ ACPI Support
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acpi-lid
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lpit
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video_extension
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extcon-intel-int3496
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@ -321,7 +321,7 @@ F: drivers/pnp/pnpacpi/
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F: include/linux/acpi.h
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F: include/linux/fwnode.h
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F: include/acpi/
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F: Documentation/acpi/
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F: Documentation/firmware-guide/acpi/
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F: Documentation/ABI/testing/sysfs-bus-acpi
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F: Documentation/ABI/testing/configfs-acpi
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F: drivers/pci/*acpi*
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@ -4862,7 +4862,7 @@ S: Maintained
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F: Documentation/
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F: scripts/kernel-doc
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X: Documentation/ABI/
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X: Documentation/acpi/
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X: Documentation/firmware-guide/acpi/
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X: Documentation/devicetree/
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X: Documentation/i2c/
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X: Documentation/media/
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@ -6032,7 +6032,7 @@ S: Maintained
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F: drivers/extcon/
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F: include/linux/extcon/
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F: include/linux/extcon.h
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F: Documentation/extcon/
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F: Documentation/firmware-guide/acpi/extcon-intel-int3496.rst
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F: Documentation/devicetree/bindings/extcon/
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EXYNOS DP DRIVER
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