linux-kernel - Re: [PATCH 3/3] PCI: dwc: Create debugfs files in DWC driver

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Message-ID: <20240701121021.00004f0b@Huawei.com>
Date: Mon, 1 Jul 2024 12:10:21 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Shradha Todi <shradha.t@...sung.com>
CC: <linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	<manivannan.sadhasivam@...aro.org>, <lpieralisi@...nel.org>, <kw@...ux.com>,
	<robh@...nel.org>, <bhelgaas@...gle.com>, <jingoohan1@...il.com>,
	<fancer.lancer@...il.com>, <yoshihiro.shimoda.uh@...esas.com>,
	<conor.dooley@...rochip.com>, <pankaj.dubey@...sung.com>,
	<gost.dev@...sung.com>
Subject: Re: [PATCH 3/3] PCI: dwc: Create debugfs files in DWC driver

On Tue, 25 Jun 2024 15:08:13 +0530
Shradha Todi <shradha.t@...sung.com> wrote:

> Add call to initialize debugfs from DWC driver and create the RASDES
> debugfs hierarchy for each platform driver. Since it can be used for
> both DW HOST controller as well as DW EP controller, add it in the
> common setup function.
> 
> Signed-off-by: Shradha Todi <shradha.t@...sung.com>

Squash this with the previous patch given it's so trivial.

> ---
>  drivers/pci/controller/dwc/pcie-designware-host.c | 2 ++
>  drivers/pci/controller/dwc/pcie-designware.c      | 4 ++++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index d15a5c2d5b48..c2e6f8484000 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -537,6 +537,8 @@ void dw_pcie_host_deinit(struct dw_pcie_rp *pp)
>  	pci_stop_root_bus(pp->bridge->bus);
>  	pci_remove_root_bus(pp->bridge->bus);
>  
> +	dwc_pcie_rasdes_debugfs_deinit(pci);
> +
>  	dw_pcie_stop_link(pci);
>  
>  	dw_pcie_edma_remove(pci);
> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> index b74e4a97558e..ebb21ba75388 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.c
> +++ b/drivers/pci/controller/dwc/pcie-designware.c
> @@ -1084,4 +1084,8 @@ void dw_pcie_setup(struct dw_pcie *pci)
>  	dw_pcie_writel_dbi(pci, PCIE_PORT_LINK_CONTROL, val);
>  
>  	dw_pcie_link_set_max_link_width(pci, pci->num_lanes);
> +
> +	val = dwc_pcie_rasdes_debugfs_init(pci);
> +	if (val)
> +		dev_err(pci->dev, "Couldn't create debugfs files\n");
>  }