Re: [PATCH v4 5/5] Hook the DWC2 driver into the build system

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Hi,

On Tue, Feb 19, 2013 at 06:50:08PM -0800, Paul Zimmerman wrote:
> Add the DWC2 Kconfig and Makefile, and modify the USB Kconfig and
> Makefile to include them
> 
> Signed-off-by: Paul Zimmerman <paulz@xxxxxxxxxxxx>
> ---
>  drivers/usb/Kconfig       |  2 ++
>  drivers/usb/Makefile      |  2 ++
>  drivers/usb/dwc2/Kconfig  | 27 +++++++++++++++++++++++++++
>  drivers/usb/dwc2/Makefile | 15 +++++++++++++++
>  4 files changed, 46 insertions(+)
>  create mode 100644 drivers/usb/dwc2/Kconfig
>  create mode 100644 drivers/usb/dwc2/Makefile
> 
> diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
> index 4c90b51..4f1c6fe 100644
> --- a/drivers/usb/Kconfig
> +++ b/drivers/usb/Kconfig
> @@ -125,6 +125,8 @@ source "drivers/usb/core/Kconfig"
>  
>  source "drivers/usb/dwc3/Kconfig"
>  
> +source "drivers/usb/dwc2/Kconfig"
> +
>  source "drivers/usb/mon/Kconfig"
>  
>  source "drivers/usb/wusbcore/Kconfig"
> diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
> index f5ed3d7..efa98f7 100644
> --- a/drivers/usb/Makefile
> +++ b/drivers/usb/Makefile
> @@ -10,6 +10,8 @@ obj-$(CONFIG_USB_OTG_UTILS)	+= otg/
>  
>  obj-$(CONFIG_USB_DWC3)		+= dwc3/
>  
> +obj-$(CONFIG_USB_DWC2)		+= dwc2/
> +
>  obj-$(CONFIG_USB_MON)		+= mon/
>  
>  obj-$(CONFIG_PCI)		+= host/
> diff --git a/drivers/usb/dwc2/Kconfig b/drivers/usb/dwc2/Kconfig
> new file mode 100644
> index 0000000..1051973
> --- /dev/null
> +++ b/drivers/usb/dwc2/Kconfig
> @@ -0,0 +1,27 @@
> +config USB_DWC2
> +	tristate "DesignWare USB2 DRD Core Support"
> +	depends on USB
> +	select USB_OTG_UTILS
> +	help
> +	  Say Y or M here if your system has a Dual Role HighSpeed
> +	  USB controller based on the DesignWare HSOTG IP Core.
> +
> +	  If you choose to build this driver as dynamically linked
> +	  modules, the core module will be called dwc2.ko, and the
> +	  PCI bus interface module (if you have a PCI bus system)
> +	  will be called dwc2_pci.ko.
> +
> +if USB_DWC2
> +
> +config USB_DWC2_DEBUG
> +	bool "Enable Debugging Messages"
> +	help
> +	  Say Y here to enable debugging messages in the DWC2 Driver.
> +
> +config USB_DWC2_VERBOSE
> +	bool "Enable Verbose Debugging Messages"
> +	depends on USB_DWC2_DEBUG
> +	help
> +	  Say Y here to enable verbose debugging messages in the DWC2 Driver.
> +
> +endif
> diff --git a/drivers/usb/dwc2/Makefile b/drivers/usb/dwc2/Makefile
> new file mode 100644
> index 0000000..97f3027
> --- /dev/null
> +++ b/drivers/usb/dwc2/Makefile
> @@ -0,0 +1,14 @@
> +ccflags-$(CONFIG_USB_DWC2_DEBUG)	+= -DDEBUG
> +ccflags-$(CONFIG_USB_DWC2_VERBOSE)	+= -DVERBOSE_DEBUG
> +
> +obj-$(CONFIG_USB_DWC2)			+= dwc2.o
> +
> +dwc2-y					+= core.o core_intr.o
> +dwc2-y					+= hcd.o hcd_intr.o
> +dwc2-y					+= hcd_queue.o hcd_ddma.o

look at how dwc3 handles build of host and peripheral roles, they're
both optional. I understand that this driver can only be built with host
role right now, but at least a comment here stating that once peripheral
role is added this should be fixed up would be great.

Here's dwc3's Makefile for reference:

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

other than that, patch looks good:

Acked-by: Felipe Balbi <balbi@xxxxxx>

-- 
balbi

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