From 388e5c51135f817f01177c42261f1116a6d7f2ad Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 15 Jan 2013 16:09:21 +0530 Subject: [PATCH] usb: dwc3: remove dwc3 dependency on host AND gadget. DWC3 controller curretly depends on USB && USB_GADGET. Some hardware may like to use only host feature on dwc3, or only gadget feature. So, removing this dependency of USB_DWC3 on USB and USB_GADGET. Adding the mode of operaiton of DWC3 also here HOST/GADGET/DUAL_ROLE based on which features are enabled. [ balbi@ti.com : . make sure we have default modes for all possible Kernel configurations. . Remove the config -> menuconfig change as it's unnecessary . switch over to IS_ENABLED() ] CC: Doug Anderson Signed-off-by: Vivek Gautam Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/Kconfig | 31 ++++++++++++++++++++++++++++++- drivers/usb/dwc3/Makefile | 10 ++++++++-- drivers/usb/dwc3/core.h | 16 +++++++++++++++- drivers/usb/dwc3/debugfs.c | 2 ++ 4 files changed, 55 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index f6a6e070c2ac..77e3f40f5cea 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -1,6 +1,6 @@ config USB_DWC3 tristate "DesignWare USB3 DRD Core Support" - depends on (USB && USB_GADGET) + depends on (USB || USB_GADGET) select USB_OTG_UTILS select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD help @@ -12,6 +12,35 @@ config USB_DWC3 if USB_DWC3 +choice + bool "DWC3 Mode Selection" + default USB_DWC3_DUAL_ROLE if (USB && USB_GADGET) + default USB_DWC3_HOST if (USB && !USB_GADGET) + default USB_DWC3_GADGET if (!USB && USB_GADGET) + +config USB_DWC3_HOST + bool "Host only mode" + depends on USB + help + Select this when you want to use DWC3 in host mode only, + thereby the gadget feature will be regressed. + +config USB_DWC3_GADGET + bool "Gadget only mode" + depends on USB_GADGET + help + Select this when you want to use DWC3 in gadget mode only, + thereby the host feature will be regressed. + +config USB_DWC3_DUAL_ROLE + bool "Dual Role mode" + depends on (USB && USB_GADGET) + help + This is the default mode of working of DWC3 controller where + both host and gadget features are enabled. + +endchoice + config USB_DWC3_DEBUG bool "Enable Debugging Messages" help diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 4502648b8171..0c7ac92582be 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -4,8 +4,14 @@ ccflags-$(CONFIG_USB_DWC3_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_DWC3) += dwc3.o dwc3-y := core.o -dwc3-y += host.o -dwc3-y += gadget.o ep0.o + +ifneq ($(filter y,$(CONFIG_USB_DWC3_HOST) $(CONFIG_USB_DWC3_DUAL_ROLE)),) + dwc3-y += host.o +endif + +ifneq ($(filter y,$(CONFIG_USB_DWC3_GADGET) $(CONFIG_USB_DWC3_DUAL_ROLE)),) + dwc3-y += gadget.o ep0.o +endif ifneq ($(CONFIG_DEBUG_FS),) dwc3-y += debugfs.o diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index f02b3e0795e0..b41750660235 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -864,10 +864,24 @@ union dwc3_event { void dwc3_set_mode(struct dwc3 *dwc, u32 mode); int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc); +#if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_host_init(struct dwc3 *dwc); void dwc3_host_exit(struct dwc3 *dwc); - +#else +static inline int dwc3_host_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_host_exit(struct dwc3 *dwc) +{ } +#endif + +#if IS_ENABLED(CONFIG_USB_DWC3_GADGET) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_gadget_init(struct dwc3 *dwc); void dwc3_gadget_exit(struct dwc3 *dwc); +#else +static inline int dwc3_gadget_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_gadget_exit(struct dwc3 *dwc) +{ } +#endif #endif /* __DRIVERS_USB_DWC3_CORE_H */ diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index aff8fd3e7e90..4a752e730c5f 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -661,6 +661,7 @@ int dwc3_debugfs_init(struct dwc3 *dwc) goto err1; } +#if IS_ENABLED(CONFIG_USB_DWC3_GADGET) file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, dwc, &dwc3_mode_fops); if (!file) { @@ -681,6 +682,7 @@ int dwc3_debugfs_init(struct dwc3 *dwc) ret = -ENOMEM; goto err1; } +#endif return 0; -- 2.20.1