Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932309AbaBEGwY (ORCPT ); Wed, 5 Feb 2014 01:52:24 -0500 Received: from mail-pa0-f43.google.com ([209.85.220.43]:52089 "EHLO mail-pa0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932240AbaBEGvy (ORCPT ); Wed, 5 Feb 2014 01:51:54 -0500 From: Magnus Damm To: linux-pci@vger.kernel.org Cc: linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, valentine.barshak@cogentembedded.com, horms@verge.net.au, bhelgaas@google.com, Magnus Damm , ben.dooks@codethink.co.uk Date: Wed, 05 Feb 2014 15:52:54 +0900 Message-Id: <20140205065254.29445.77939.sendpatchset@w520> In-Reply-To: <20140205065243.29445.76593.sendpatchset@w520> References: <20140205065243.29445.76593.sendpatchset@w520> Subject: [PATCH 01/04] PCI: rcar: Register each instance independently Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Magnus Damm Convert the code to allow per-device probe() like other device drivers. This also delays driver registration due to change from subsys_initcall() to regular module_platform_driver(). Signed-off-by: Magnus Damm --- drivers/pci/host/pci-rcar-gen2.c | 74 ++++++++------------------------------ 1 file changed, 16 insertions(+), 58 deletions(-) --- 0001/drivers/pci/host/pci-rcar-gen2.c +++ work/drivers/pci/host/pci-rcar-gen2.c 2014-02-04 16:38:46.000000000 +0900 @@ -74,9 +74,6 @@ #define RCAR_PCI_UNIT_REV_REG (RCAR_AHBPCI_PCICOM_OFFSET + 0x48) -/* Number of internal PCI controllers */ -#define RCAR_PCI_NR_CONTROLLERS 3 - struct rcar_pci_priv { struct device *dev; void __iomem *reg; @@ -228,6 +225,8 @@ static int __init rcar_pci_setup(int nr, pci_add_resource(&sys->resources, &priv->io_res); pci_add_resource(&sys->resources, &priv->mem_res); + /* Setup bus number based on platform device id */ + sys->busnr = to_platform_device(priv->dev)->id; return 1; } @@ -236,48 +235,12 @@ static struct pci_ops rcar_pci_ops = { .write = rcar_pci_write_config, }; -static struct hw_pci rcar_hw_pci __initdata = { - .map_irq = rcar_pci_map_irq, - .ops = &rcar_pci_ops, - .setup = rcar_pci_setup, -}; - -static int rcar_pci_count __initdata; - -static int __init rcar_pci_add_controller(struct rcar_pci_priv *priv) -{ - void **private_data; - int count; - - if (rcar_hw_pci.nr_controllers < rcar_pci_count) - goto add_priv; - - /* (Re)allocate private data pointer array if needed */ - count = rcar_pci_count + RCAR_PCI_NR_CONTROLLERS; - private_data = kzalloc(count * sizeof(void *), GFP_KERNEL); - if (!private_data) - return -ENOMEM; - - rcar_pci_count = count; - if (rcar_hw_pci.private_data) { - memcpy(private_data, rcar_hw_pci.private_data, - rcar_hw_pci.nr_controllers * sizeof(void *)); - kfree(rcar_hw_pci.private_data); - } - - rcar_hw_pci.private_data = private_data; - -add_priv: - /* Add private data pointer to the array */ - rcar_hw_pci.private_data[rcar_hw_pci.nr_controllers++] = priv; - return 0; -} - -static int __init rcar_pci_probe(struct platform_device *pdev) +static int rcar_pci_probe(struct platform_device *pdev) { struct resource *cfg_res, *mem_res; struct rcar_pci_priv *priv; void __iomem *reg; + struct hw_pci hw; cfg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); reg = devm_ioremap_resource(&pdev->dev, cfg_res); @@ -308,31 +271,26 @@ static int __init rcar_pci_probe(struct priv->reg = reg; priv->dev = &pdev->dev; - return rcar_pci_add_controller(priv); + memset(&hw, 0, sizeof(hw)); + hw.nr_controllers = 1; + hw.private_data = (void **)&priv; + hw.map_irq = rcar_pci_map_irq; + hw.ops = &rcar_pci_ops; + hw.setup = rcar_pci_setup; + pci_common_init_dev(&pdev->dev, &hw); + return 0; } static struct platform_driver rcar_pci_driver = { .driver = { .name = "pci-rcar-gen2", + .owner = THIS_MODULE, + .suppress_bind_attrs = true, }, + .probe = rcar_pci_probe, }; -static int __init rcar_pci_init(void) -{ - int retval; - - retval = platform_driver_probe(&rcar_pci_driver, rcar_pci_probe); - if (!retval) - pci_common_init(&rcar_hw_pci); - - /* Private data pointer array is not needed any more */ - kfree(rcar_hw_pci.private_data); - rcar_hw_pci.private_data = NULL; - - return retval; -} - -subsys_initcall(rcar_pci_init); +module_platform_driver(rcar_pci_driver); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Renesas R-Car Gen2 internal PCI"); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/