forked from Minki/linux
17f934024e
This patch adds support for usb role switch to dwc2, by using overriding control of the PHY voltage valid and ID input signals. iddig signal (ID) can be overridden: - when setting GUSBCFG_FORCEHOSTMODE, iddig input pin is overridden with 1; - when setting GUSBCFG_FORCEDEVMODE, iddig input pin is overridden with 0. avalid/bvalid/vbusvalid signals can be overridden respectively with: - GOTGCTL_AVALOEN + GOTGCTL_AVALOVAL - GOTGCTL_BVALOEN + GOTGCTL_BVALOVAL - GOTGCTL_VBVALEN + GOTGCTL_VBVALOVAL It is possible to determine valid sessions thanks to usb role switch: - if USB_ROLE_NONE then !avalid && !bvalid && !vbusvalid - if USB_ROLE_DEVICE then !avalid && bvalid && vbusvalid - if USB_ROLE_HOST then avalid && !bvalid && vbusvalid Acked-by: Minas Harutyunyan <hminas@synopsys.com> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
30 lines
995 B
Makefile
30 lines
995 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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ccflags-$(CONFIG_USB_DWC2_DEBUG) += -DDEBUG
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ccflags-$(CONFIG_USB_DWC2_VERBOSE) += -DVERBOSE_DEBUG
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obj-$(CONFIG_USB_DWC2) += dwc2.o
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dwc2-y := core.o core_intr.o platform.o drd.o
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dwc2-y += params.o
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ifneq ($(filter y,$(CONFIG_USB_DWC2_HOST) $(CONFIG_USB_DWC2_DUAL_ROLE)),)
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dwc2-y += hcd.o hcd_intr.o
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dwc2-y += hcd_queue.o hcd_ddma.o
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endif
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ifneq ($(filter y,$(CONFIG_USB_DWC2_PERIPHERAL) $(CONFIG_USB_DWC2_DUAL_ROLE)),)
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dwc2-y += gadget.o
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endif
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ifneq ($(CONFIG_DEBUG_FS),)
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dwc2-y += debugfs.o
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endif
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# NOTE: The previous s3c-hsotg peripheral mode only driver has been moved to
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# this location and renamed gadget.c. When building for dynamically linked
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# modules, dwc2.ko will get built for host mode, peripheral mode, and dual-role
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# mode. The PCI bus interface module will called dwc2_pci.ko and the platform
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# interface module will be called dwc2_platform.ko.
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obj-$(CONFIG_USB_DWC2_PCI) += dwc2_pci.o
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dwc2_pci-y := pci.o
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