coreboot-kgpe-d16/src/drivers/gfx/generic/Kconfig

config DRIVERS_GFX_GENERIC
	bool
	default n
	depends on HAVE_ACPI_TABLES
	help
	  Include support for generic graphics device in devicetree
gfx: Move drivers/generic/gfx to drivers/gfx/generic This change creates gfx directory under drivers/ so that all drivers handling gfx devices can be located in the same place. In follow-up CLs, we will be adding another driver that handles gfx devices. This change also updates the names used within the driver from generic_gfx to gfx_generic. In addition to that, mainboard drallion using this driver is updated to match the correct path and Kconfig name. TEST=Verified that drallion still builds. Change-Id: I377743e0f6d770eed143c7b6041dab2a101e6252 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39047 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Mathew King <mathewk@chromium.org> 2020-02-21 18:57:54 +01:00			`config DRIVERS_GFX_GENERIC`
drivers/gfx: Add generic graphics with SSDT generator Adds a generic graphics driver that can be added to a devicetree which populates graphics-related ACPI table. It will write the _DOD method (Enumerate All Devices Attached to the Display Adapter) and a device object for each device defined. The device may optionally have a connected privacy screen which can be controlled with a _DSM. Example: chip drivers/generic/gfx register "device_count" = "1" register "device[0].name" = ""LCD"" register "device[0].addr" = "0x0400" register "device[0].privacy.enabled" = "1" register "device[0].privacy.detect_function" = ""\\_SB.PCI0.PVSC.GPVD"" register "device[0].privacy.status_function" = ""\\_SB.PCI0.PVSC.GPVX"" register "device[0].privacy.enable_function" = ""\\_SB.PCI0.PVSC.EPVX"" register "device[0].privacy.disable_function" = ""\\_SB.PCI0.PVSC.DPVX"" device generic 0 on end end ASL Scope (\_SB.PCI0.GFX0) { Method (_DOD, 0, NotSerialized) // _DOD: Display Output Devices { Return (Package (0x01) { 0x00000400 }) } Device (LCD) { Name (_ADR, 0x0400) // _ADR: Address Name (_STA, 0x0F) // _STA: Status Method (_DSM, 4, Serialized) // _DSM: Device-Specific Method { ToBuffer (Arg0, Local0) If ((Local0 == ToUUID ("c7033113-8720-4ceb-9090-9d52b3e52d73"))) { ToInteger (Arg2, Local1) If ((Local1 == Zero)) { Local2 = \_SB.PCI0.PVSC.GPVD () If ((Local2 == One)) { Return (Buffer (One) { 0x0F }) } } If ((Local1 == One)) { ToBuffer (\_SB.PCI0.PVSC.GPVX (), Local2) Return (Local2) } If ((Local1 == 0x02)) { \_SB.PCI0.PVSC.EPVX () } If ((Local1 == 0x03)) { \_SB.PCI0.PVSC.DPVX () } Return (Buffer (One) { 0x00 }) } Return (Buffer (One) { 0x00 }) } } } BUG=b:142237145 TEST=Added gfx to devicetree on sarien_cml and correct ASL in SSDT Change-Id: Ida520dd7aad81ee7c1e5f2d0d3f5cc1a766d78a0 Signed-off-by: Mathew King <mathewk@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36041 Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> 2019-10-14 18:19:15 +02:00			`bool`
			`default n`
			`depends on HAVE_ACPI_TABLES`
			`help`
			`Include support for generic graphics device in devicetree`