From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manikanta Maddireddy Subject: [PATCH 08/10] PCI: tegra: Add loadable kernel module support Date: Fri, 24 Nov 2017 21:23:18 +0530 Message-ID: <1511538800-8275-9-git-send-email-mmaddireddy@nvidia.com> References: <1511538800-8275-1-git-send-email-mmaddireddy@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1511538800-8275-1-git-send-email-mmaddireddy-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org, tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org Cc: vidyas-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, kthota-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Manikanta Maddireddy List-Id: linux-tegra@vger.kernel.org Implement remove call back function for Tegra PCIe driver to add loadable kernel module support. Change PCI_TEGRA config to tristate to allow pci-tegra driver to build as a module. Signed-off-by: Manikanta Maddireddy --- drivers/pci/host/Kconfig | 2 +- drivers/pci/host/pci-tegra.c | 31 ++++++++++++++++++++++++++++++- 2 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig index b868803792d8..15eb265461b2 100644 --- a/drivers/pci/host/Kconfig +++ b/drivers/pci/host/Kconfig @@ -34,7 +34,7 @@ config PCI_FTPCI100 default ARCH_GEMINI config PCI_TEGRA - bool "NVIDIA Tegra PCIe controller" + tristate "NVIDIA Tegra PCIe controller" depends on ARCH_TEGRA help Say Y here if you want support for the PCIe host controller found diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index 09f52cd569c6..2ff1ac3aefc1 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -2700,6 +2701,12 @@ static int tegra_pcie_debugfs_init(struct tegra_pcie *pcie) return -ENOMEM; } +static void tegra_pcie_debugfs_exit(struct tegra_pcie *pcie) +{ + debugfs_remove_recursive(pcie->debugfs); + pcie->debugfs = NULL; +} + static int tegra_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -2714,6 +2721,7 @@ static int tegra_pcie_probe(struct platform_device *pdev) return -ENOMEM; pcie = pci_host_bridge_priv(host); + platform_set_drvdata(pdev, pcie); pcie->soc = of_device_get_match_data(dev); INIT_LIST_HEAD(&pcie->buses); @@ -2796,6 +2804,25 @@ static int tegra_pcie_probe(struct platform_device *pdev) return err; } +static int tegra_pcie_remove(struct platform_device *pdev) +{ + struct tegra_pcie *pcie = platform_get_drvdata(pdev); + struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie); + + if (IS_ENABLED(CONFIG_DEBUG_FS)) + tegra_pcie_debugfs_exit(pcie); + pci_stop_root_bus(host->bus); + pci_remove_root_bus(host->bus); + if (IS_ENABLED(CONFIG_PCI_MSI)) + tegra_pcie_disable_msi(pcie); + tegra_pcie_disable_ports(pcie); + tegra_pcie_free_resources(pcie); + tegra_pcie_disable_controller(pcie); + tegra_pcie_put_resources(pcie); + + return 0; +} + static struct platform_driver tegra_pcie_driver = { .driver = { .name = "tegra-pcie", @@ -2803,5 +2830,7 @@ static struct platform_driver tegra_pcie_driver = { .suppress_bind_attrs = true, }, .probe = tegra_pcie_probe, + .remove = tegra_pcie_remove, }; -builtin_platform_driver(tegra_pcie_driver); +module_platform_driver(tegra_pcie_driver); +MODULE_LICENSE("GPL"); -- 2.1.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hqemgate14.nvidia.com ([216.228.121.143]:7511 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753768AbdKXPzU (ORCPT ); Fri, 24 Nov 2017 10:55:20 -0500 From: Manikanta Maddireddy To: , , , , , , CC: , , , , , , Manikanta Maddireddy Subject: [PATCH 08/10] PCI: tegra: Add loadable kernel module support Date: Fri, 24 Nov 2017 21:23:18 +0530 Message-ID: <1511538800-8275-9-git-send-email-mmaddireddy@nvidia.com> In-Reply-To: <1511538800-8275-1-git-send-email-mmaddireddy@nvidia.com> References: <1511538800-8275-1-git-send-email-mmaddireddy@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-pci-owner@vger.kernel.org List-ID: Implement remove call back function for Tegra PCIe driver to add loadable kernel module support. Change PCI_TEGRA config to tristate to allow pci-tegra driver to build as a module. Signed-off-by: Manikanta Maddireddy --- drivers/pci/host/Kconfig | 2 +- drivers/pci/host/pci-tegra.c | 31 ++++++++++++++++++++++++++++++- 2 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig index b868803792d8..15eb265461b2 100644 --- a/drivers/pci/host/Kconfig +++ b/drivers/pci/host/Kconfig @@ -34,7 +34,7 @@ config PCI_FTPCI100 default ARCH_GEMINI config PCI_TEGRA - bool "NVIDIA Tegra PCIe controller" + tristate "NVIDIA Tegra PCIe controller" depends on ARCH_TEGRA help Say Y here if you want support for the PCIe host controller found diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index 09f52cd569c6..2ff1ac3aefc1 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -2700,6 +2701,12 @@ static int tegra_pcie_debugfs_init(struct tegra_pcie *pcie) return -ENOMEM; } +static void tegra_pcie_debugfs_exit(struct tegra_pcie *pcie) +{ + debugfs_remove_recursive(pcie->debugfs); + pcie->debugfs = NULL; +} + static int tegra_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -2714,6 +2721,7 @@ static int tegra_pcie_probe(struct platform_device *pdev) return -ENOMEM; pcie = pci_host_bridge_priv(host); + platform_set_drvdata(pdev, pcie); pcie->soc = of_device_get_match_data(dev); INIT_LIST_HEAD(&pcie->buses); @@ -2796,6 +2804,25 @@ static int tegra_pcie_probe(struct platform_device *pdev) return err; } +static int tegra_pcie_remove(struct platform_device *pdev) +{ + struct tegra_pcie *pcie = platform_get_drvdata(pdev); + struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie); + + if (IS_ENABLED(CONFIG_DEBUG_FS)) + tegra_pcie_debugfs_exit(pcie); + pci_stop_root_bus(host->bus); + pci_remove_root_bus(host->bus); + if (IS_ENABLED(CONFIG_PCI_MSI)) + tegra_pcie_disable_msi(pcie); + tegra_pcie_disable_ports(pcie); + tegra_pcie_free_resources(pcie); + tegra_pcie_disable_controller(pcie); + tegra_pcie_put_resources(pcie); + + return 0; +} + static struct platform_driver tegra_pcie_driver = { .driver = { .name = "tegra-pcie", @@ -2803,5 +2830,7 @@ static struct platform_driver tegra_pcie_driver = { .suppress_bind_attrs = true, }, .probe = tegra_pcie_probe, + .remove = tegra_pcie_remove, }; -builtin_platform_driver(tegra_pcie_driver); +module_platform_driver(tegra_pcie_driver); +MODULE_LICENSE("GPL"); -- 2.1.4