diff options
Diffstat (limited to 'drivers/pci/host/pcie-iproc-platform.c')
| -rw-r--r-- | drivers/pci/host/pcie-iproc-platform.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c new file mode 100644 index 000000000000..afad6c21fcfa --- /dev/null +++ b/drivers/pci/host/pcie-iproc-platform.c @@ -0,0 +1,108 @@ +/* + * 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"); |