linux-kernel - Re: [PATCH v2 07/17] PCI: dwc: dra7xx: Refactor Kconfig and Makefile handling for host/ep mode

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Date:   Tue, 31 Oct 2017 11:53:46 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Niklas Cassel <niklas.cassel@...s.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Niklas Cassel <niklass@...s.com>,
        Arnd Bergmann <arnd@...db.de>,
        Peter Robinson <pbrobinson@...il.com>,
        Jianguo Sun <sunjianguo1@...wei.com>,
        Xiaowei Song <songxiaowei@...ilicon.com>,
        Tomasz Nowicki <tn@...ihalf.com>, Duc Dang <dhdang@....com>
CC:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 07/17] PCI: dwc: dra7xx: Refactor Kconfig and Makefile
 handling for host/ep mode



On Monday 30 October 2017 06:12 PM, Niklas Cassel wrote:
> The previous handling was a bit unorthodox and would have been a bit
> bloated once more DWC based controllers added support for ep mode.
> 
> Signed-off-by: Niklas Cassel <niklas.cassel@...s.com>

Acked-by: Kishon Vijay Abraham I <kishon@...com>
> ---
> V2:
> * New patch in this series.
> 
>  drivers/pci/dwc/Kconfig  | 45 ++++++++++++++++++++++-----------------------
>  drivers/pci/dwc/Makefile |  4 +---
>  2 files changed, 23 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/pci/dwc/Kconfig b/drivers/pci/dwc/Kconfig
> index 113e09440f85..3954353e3e2e 100644
> --- a/drivers/pci/dwc/Kconfig
> +++ b/drivers/pci/dwc/Kconfig
> @@ -15,39 +15,38 @@ config PCIE_DW_EP
>  	select PCIE_DW
>  
>  config PCI_DRA7XX
> -	bool "TI DRA7xx PCIe controller"
> -	depends on SOC_DRA7XX || COMPILE_TEST
> -	depends on (PCI && PCI_MSI_IRQ_DOMAIN) || PCI_ENDPOINT
> -	depends on OF && HAS_IOMEM && TI_PIPE3
> -	help
> -	 Enables support for the PCIe controller in the DRA7xx SoC. There
> -	 are two instances of PCIe controller in DRA7xx. This controller can
> -	 work either as EP or RC. In order to enable host-specific features
> -	 PCI_DRA7XX_HOST must be selected and in order to enable device-
> -	 specific features PCI_DRA7XX_EP must be selected. This uses
> -	 the DesignWare core.
> -
> -if PCI_DRA7XX
> +	bool
>  
>  config PCI_DRA7XX_HOST
> -	bool "PCI DRA7xx Host Mode"
> -	depends on PCI
> -	depends on PCI_MSI_IRQ_DOMAIN
> +	bool "TI DRA7xx PCIe controller Host Mode"
> +	depends on SOC_DRA7XX || COMPILE_TEST
> +	depends on PCI && PCI_MSI_IRQ_DOMAIN
> +	depends on OF && HAS_IOMEM && TI_PIPE3
>  	select PCIE_DW_HOST
> +	select PCI_DRA7XX
>  	default y
>  	help
> -	 Enables support for the PCIe controller in the DRA7xx SoC to work in
> -	 host mode.
> +	  Enables support for the PCIe controller in the DRA7xx SoC to work in
> +	  host mode. There are two instances of PCIe controller in DRA7xx.
> +	  This controller can work either as EP or RC. In order to enable
> +	  host-specific features PCI_DRA7XX_HOST must be selected and in order
> +	  to enable device-specific features PCI_DRA7XX_EP must be selected.
> +	  This uses the DesignWare core.
>  
>  config PCI_DRA7XX_EP
> -	bool "PCI DRA7xx Endpoint Mode"
> +	bool "TI DRA7xx PCIe controller Endpoint Mode"
> +	depends on SOC_DRA7XX || COMPILE_TEST
>  	depends on PCI_ENDPOINT
> +	depends on OF && HAS_IOMEM && TI_PIPE3
>  	select PCIE_DW_EP
> +	select PCI_DRA7XX
>  	help
> -	 Enables support for the PCIe controller in the DRA7xx SoC to work in
> -	 endpoint mode.
> -
> -endif
> +	  Enables support for the PCIe controller in the DRA7xx SoC to work in
> +	  endpoint mode. There are two instances of PCIe controller in DRA7xx.
> +	  This controller can work either as EP or RC. In order to enable
> +	  host-specific features PCI_DRA7XX_HOST must be selected and in order
> +	  to enable device-specific features PCI_DRA7XX_EP must be selected.
> +	  This uses the DesignWare core.
>  
>  config PCIE_DW_PLAT
>  	bool "Platform bus based DesignWare PCIe Controller"
> diff --git a/drivers/pci/dwc/Makefile b/drivers/pci/dwc/Makefile
> index 54f56f6e9236..260589bd4e1d 100644
> --- a/drivers/pci/dwc/Makefile
> +++ b/drivers/pci/dwc/Makefile
> @@ -2,9 +2,7 @@ obj-$(CONFIG_PCIE_DW) += pcie-designware.o
>  obj-$(CONFIG_PCIE_DW_HOST) += pcie-designware-host.o
>  obj-$(CONFIG_PCIE_DW_EP) += pcie-designware-ep.o
>  obj-$(CONFIG_PCIE_DW_PLAT) += pcie-designware-plat.o
> -ifneq ($(filter y,$(CONFIG_PCI_DRA7XX_HOST) $(CONFIG_PCI_DRA7XX_EP)),)
> -        obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o
> -endif
> +obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o
>  obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o
>  obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
>  obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
>