109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2015 Broadcom Corporation
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation version 2.
|
||
|
|
*
|
||
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||
|
|
* kind, whether express or implied; without even the implied warranty
|
||
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/clk.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/of_address.h>
|
||
|
|
#include <linux/of_pci.h>
|
||
|
|
#include <linux/of_irq.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
#include <linux/phy/phy.h>
|
||
|
|
|
||
|
|
#include "pcie-iproc.h"
|
||
|
|
|
||
|
|
static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct iproc_pcie *pcie;
|
||
|
|
struct device_node *np = pdev->dev.of_node;
|
||
|
|
struct resource reg;
|
||
|
|
resource_size_t iobase = 0;
|
||
|
|
LIST_HEAD(res);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
pcie = devm_kzalloc(&pdev->dev, sizeof(struct iproc_pcie), GFP_KERNEL);
|
||
|
|
if (!pcie)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
pcie->dev = &pdev->dev;
|
||
|
|
platform_set_drvdata(pdev, pcie);
|
||
|
|
|
||
|
|
ret = of_address_to_resource(np, 0, ®);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(pcie->dev, "unable to obtain controller resources\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
pcie->base = devm_ioremap(pcie->dev, reg.start, resource_size(®));
|
||
|
|
if (!pcie->base) {
|
||
|
|
dev_err(pcie->dev, "unable to map controller registers\n");
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* PHY use is optional */
|
||
|
|
pcie->phy = devm_phy_get(&pdev->dev, "pcie-phy");
|
||
|
|
if (IS_ERR(pcie->phy)) {
|
||
|
|
if (PTR_ERR(pcie->phy) == -EPROBE_DEFER)
|
||
|
|
return -EPROBE_DEFER;
|
||
|
|
pcie->phy = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &iobase);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(pcie->dev,
|
||
|
|
"unable to get PCI host bridge resources\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
pcie->resources = &res;
|
||
|
|
|
||
|
|
ret = iproc_pcie_setup(pcie);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(pcie->dev, "PCIe controller setup failed\n");
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int iproc_pcie_pltfm_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct iproc_pcie *pcie = platform_get_drvdata(pdev);
|
||
|
|
|
||
|
|
return iproc_pcie_remove(pcie);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct of_device_id iproc_pcie_of_match_table[] = {
|
||
|
|
{ .compatible = "brcm,iproc-pcie", },
|
||
|
|
{ /* sentinel */ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table);
|
||
|
|
|
||
|
|
static struct platform_driver iproc_pcie_pltfm_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "iproc-pcie",
|
||
|
|
.of_match_table = of_match_ptr(iproc_pcie_of_match_table),
|
||
|
|
},
|
||
|
|
.probe = iproc_pcie_pltfm_probe,
|
||
|
|
.remove = iproc_pcie_pltfm_remove,
|
||
|
|
};
|
||
|
|
module_platform_driver(iproc_pcie_pltfm_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>");
|
||
|
|
MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver");
|
||
|
|
MODULE_LICENSE("GPL v2");
|