On Fri, Sep 11, 2020 at 05:50:02PM +0900, Kunihiko Hayashi wrote:
> This gets iATU register area from reg property that has reg-names "atu".
> In Synopsys DWC version 4.80 or later, since iATU register area is
> separated from core register area, this area is necessary to get from
> DT independently.
>
> Cc: Murali Karicheri <m-karicheri2@xxxxxx>
> Cc: Jingoo Han <jingoohan1@xxxxxxxxx>
> Cc: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
> Suggested-by: Rob Herring <robh@xxxxxxxxxx>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
> ---
> drivers/pci/controller/dwc/pcie-designware.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> index 4d105ef..4a360bc 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.c
> +++ b/drivers/pci/controller/dwc/pcie-designware.c
> @@ -10,6 +10,7 @@
>
> #include <linux/delay.h>
> #include <linux/of.h>
> +#include <linux/of_platform.h>
> #include <linux/types.h>
>
> #include "../../pci.h"
> @@ -526,11 +527,16 @@ void dw_pcie_setup(struct dw_pcie *pci)
> u32 val;
> struct device *dev = pci->dev;
> struct device_node *np = dev->of_node;
> + struct platform_device *pdev;
>
> if (pci->version >= 0x480A || (!pci->version &&
> dw_pcie_iatu_unroll_enabled(pci))) {
> pci->iatu_unroll_enabled = true;
> - if (!pci->atu_base)
> + pdev = of_find_device_by_node(np);
Use to_platform_device(dev) instead. Put that at the beginning as I'm
going to move 'dbi' in here too.
> + if (!pci->atu_base && pdev)
> + pci->atu_base =
> + devm_platform_ioremap_resource_byname(pdev, "atu");
> + if (IS_ERR_OR_NULL(pci->atu_base))
> pci->atu_base = pci->dbi_base + DEFAULT_DBI_ATU_OFFSET;
> }
> dev_dbg(pci->dev, "iATU unroll: %s\n", pci->iatu_unroll_enabled ?
> --
> 2.7.4
>
>
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