linux-kernel - Re: [PATCH 5/5] usb: chipidea: allow disabling glue drivers if EMBEDDED

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Date:   Tue, 7 Apr 2020 03:12:36 +0000
From:   Peter Chen <peter.chen@....com>
To:     Michał Mirosław <mirq-linux@...e.qmqm.pl>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH 5/5] usb: chipidea: allow disabling glue drivers if
 EMBEDDED

On 20-04-04 02:00:06, Michał Mirosław wrote:
> Allow to cut down on driver size for embedded config.
> 
> Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
> ---
>  drivers/usb/chipidea/Kconfig  | 37 ++++++++++++++++++++++++-----------
>  drivers/usb/chipidea/Makefile | 12 +++++-------
>  2 files changed, 31 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
> index d53db520e209..8bafcfc6080d 100644
> --- a/drivers/usb/chipidea/Kconfig
> +++ b/drivers/usb/chipidea/Kconfig
> @@ -18,17 +18,6 @@ config USB_CHIPIDEA
>  
>  if USB_CHIPIDEA
>  
> -config USB_CHIPIDEA_OF
> -	tristate
> -	depends on OF
> -	default USB_CHIPIDEA
> -
> -config USB_CHIPIDEA_PCI
> -	tristate
> -	depends on USB_PCI
> -	depends on NOP_USB_XCEIV
> -	default USB_CHIPIDEA
> -
>  config USB_CHIPIDEA_UDC
>  	bool "ChipIdea device controller"
>  	depends on USB_GADGET
> @@ -43,4 +32,30 @@ config USB_CHIPIDEA_HOST
>  	help
>  	  Say Y here to enable host controller functionality of the
>  	  ChipIdea driver.
> +
> +config USB_CHIPIDEA_PCI
> +	tristate "Enable PCI glue driver" if EMBEDDED

Why depends on EMBEDDED for this driver? Not everyone needs this
configuration.

Peter
> +	depends on USB_PCI
> +	depends on NOP_USB_XCEIV
> +	default USB_CHIPIDEA
> +
> +config USB_CHIPIDEA_MSM
> +	tristate "Enable MSM hsusb glue driver" if EMBEDDED
> +	default USB_CHIPIDEA
> +
> +config USB_CHIPIDEA_IMX
> +	tristate "Enable i.MX USB glue driver" if EMBEDDED
> +	depends on OF
> +	default USB_CHIPIDEA
> +
> +config USB_CHIPIDEA_GENERIC
> +	tristate "Enable generic USB2 glue driver" if EMBEDDED
> +	default USB_CHIPIDEA
> +
> +config USB_CHIPIDEA_TEGRA
> +	tristate "Enable Tegra UDC glue driver" if EMBEDDED
> +	depends on OF
> +	depends on USB_CHIPIDEA_UDC
> +	default USB_CHIPIDEA
> +
>  endif
> diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
> index 985663ba6e68..fae779a23866 100644
> --- a/drivers/usb/chipidea/Makefile
> +++ b/drivers/usb/chipidea/Makefile
> @@ -8,10 +8,8 @@ ci_hdrc-$(CONFIG_USB_OTG_FSM)		+= otg_fsm.o
>  
>  # Glue/Bridge layers go here
>  
> -obj-$(CONFIG_USB_CHIPIDEA)	+= ci_hdrc_usb2.o
> -obj-$(CONFIG_USB_CHIPIDEA)	+= ci_hdrc_msm.o
> -
> -obj-$(CONFIG_USB_CHIPIDEA_PCI)	+= ci_hdrc_pci.o
> -
> -obj-$(CONFIG_USB_CHIPIDEA_OF)	+= usbmisc_imx.o ci_hdrc_imx.o
> -obj-$(CONFIG_USB_CHIPIDEA_OF)	+= ci_hdrc_tegra.o
> +obj-$(CONFIG_USB_CHIPIDEA_GENERIC)	+= ci_hdrc_usb2.o
> +obj-$(CONFIG_USB_CHIPIDEA_MSM)		+= ci_hdrc_msm.o
> +obj-$(CONFIG_USB_CHIPIDEA_PCI)		+= ci_hdrc_pci.o
> +obj-$(CONFIG_USB_CHIPIDEA_IMX)		+= ci_hdrc_imx.o usbmisc_imx.o
> +obj-$(CONFIG_USB_CHIPIDEA_TEGRA)	+= ci_hdrc_tegra.o
> -- 
> 2.20.1
> 

-- 

Thanks,
Peter Chen