Hi Kishon,
> -----Original Message-----
> From: Kishon Vijay Abraham I <kishon@xxxxxx>
> Sent: 15 October 2019 12:23
> To: Tom Joseph <tjoseph@xxxxxxxxxxx>; linux-pci@xxxxxxxxxxxxxxx
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>; Bjorn Helgaas
> <bhelgaas@xxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] PCI:cadence:Driver refactored to use as a core library.
>
>
> Hi Tom,
>
> On 01/10/19 4:45 PM, Kishon Vijay Abraham I wrote:
> > Hi Tom,
> >
> > On 30/09/19 10:12 PM, Tom Joseph wrote:
> >> All the platform related APIs/Structures in the driver has been extracted
> >> out to a separate file (pcie-cadence-plat.c). This will enable the
> >> driver to be used as a core library, which could be used by other
> >> platform drivers.Testing was done using simulation environment.
> >>
> >> Signed-off-by: Tom Joseph <tjoseph@xxxxxxxxxxx>
> >> ---
> >> drivers/pci/controller/Kconfig | 35 +++++++
> >> drivers/pci/controller/Makefile | 1 +
> >> drivers/pci/controller/pcie-cadence-ep.c | 78 ++-------------
> >> drivers/pci/controller/pcie-cadence-host.c | 77 +++------------
> >> drivers/pci/controller/pcie-cadence-plat.c | 154
> +++++++++++++++++++++++++++++
> >> drivers/pci/controller/pcie-cadence.h | 69 +++++++++++++
> >> 6 files changed, 278 insertions(+), 136 deletions(-)
> >> create mode 100644 drivers/pci/controller/pcie-cadence-plat.c
> >>
>
> <snip>
>
> >> diff --git a/drivers/pci/controller/pcie-cadence-plat.c
> b/drivers/pci/controller/pcie-cadence-plat.c
> >> new file mode 100644
> >> index 0000000..274615d
> >> --- /dev/null
> >> +++ b/drivers/pci/controller/pcie-cadence-plat.c
> >> @@ -0,0 +1,154 @@
> >> +// SPDX-License-Identifier: GPL-2.0
> >> +// Copyright (c) 2019 Cadence
> >> +// Cadence PCIe platform driver.
> >> +// Author: Tom Joseph <tjoseph@xxxxxxxxxxx>
> >> +
> >> +#include <linux/kernel.h>
> >> +#include <linux/of_address.h>
> >> +#include <linux/of_pci.h>
> >> +#include <linux/platform_device.h>
> >> +#include <linux/pm_runtime.h>
> >> +#include <linux/of_device.h>
> >> +#include "pcie-cadence.h"
> >> +
> >> +/**
> >> + * struct cdns_plat_pcie - private data for this PCIe platform driver
> >> + * @pcie: Cadence PCIe controller
> >> + * @regmap: pointer to PCIe device
> >> + * @is_rc: Set to 1 indicates the PCIe controller mode is Root Complex,
> >> + * if 0 it is in Endpoint mode.
> >> + */
> >> +struct cdns_plat_pcie {
> >> + struct cdns_pcie *pcie;
> >> + bool is_rc;
> >> +};
> >> +
> >> +struct cdns_plat_pcie_of_data {
> >> + bool is_rc;
> >> +};
> >> +
> >> +static const struct of_device_id cdns_plat_pcie_of_match[];
> >> +
> >> +int cdns_plat_pcie_link_control(struct cdns_pcie *pcie, bool start)
> >> +{
> >> + pr_debug(" %s called\n", __func__);
> >> + return 0;
> >> +}
> >> +
> >> +bool cdns_plat_pcie_link_status(struct cdns_pcie *pcie)
>
> How do you get cdns_plat_pcie from pcie? Cadence plat doesn't need it
> however
> the platform specific base address will be stored in the platform specific
> structure (struct cdns_plat_pcie here) which will be used for performing
> controller configuration.
>
> I think you can just move *dev to struct cdns_pcie from struct
> cdns_pcie_ep/struct cdns_pcie_rc and use dev_get_drvdata here to get
> platform
> specific structure.
>
> Thanks
> Kishon
Thanks. I will update it as suggested.
Regards,
Tom
