From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manikanta Maddireddy Subject: [PATCH V2 7/9] PCI: tegra: Add loadable kernel module support Date: Sun, 26 Nov 2017 01:02:11 +0530 Message-ID: <1511638333-22951-8-git-send-email-mmaddireddy@nvidia.com> References: <1511638333-22951-1-git-send-email-mmaddireddy@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1511638333-22951-1-git-send-email-mmaddireddy@nvidia.com> Sender: linux-pci-owner@vger.kernel.org To: thierry.reding@gmail.com, jonathanh@nvidia.com, robh+dt@kernel.org, frowand.list@gmail.com, bhelgaas@google.com, rjw@rjwysocki.net, tglx@linutronix.de Cc: vidyas@nvidia.com, kthota@nvidia.com, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Manikanta Maddireddy List-Id: linux-tegra@vger.kernel.org Implement remove callback function for Tegra PCIe driver to add loadable kernel module support. Change PCI_TEGRA config to tristate to allow pci-tegra driver to be build as a module. Signed-off-by: Manikanta Maddireddy --- V2: * no change in this patch 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 38d12980db0f..6fd2a5937804 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 7f7b8c9c1e84..bbc2807bcd4a 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 @@ -2720,6 +2721,12 @@ 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; @@ -2734,6 +2741,7 @@ 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); @@ -2816,6 +2824,25 @@ 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", @@ -2823,5 +2850,7 @@ 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 hqemgate16.nvidia.com ([216.228.121.65]:19027 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751698AbdKYTct (ORCPT ); Sat, 25 Nov 2017 14:32:49 -0500 From: Manikanta Maddireddy To: , , , , , , CC: , , , , , , Manikanta Maddireddy Subject: [PATCH V2 7/9] PCI: tegra: Add loadable kernel module support Date: Sun, 26 Nov 2017 01:02:11 +0530 Message-ID: <1511638333-22951-8-git-send-email-mmaddireddy@nvidia.com> In-Reply-To: <1511638333-22951-1-git-send-email-mmaddireddy@nvidia.com> References: <1511638333-22951-1-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 callback function for Tegra PCIe driver to add loadable kernel module support. Change PCI_TEGRA config to tristate to allow pci-tegra driver to be build as a module. Signed-off-by: Manikanta Maddireddy --- V2: * no change in this patch 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 38d12980db0f..6fd2a5937804 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 7f7b8c9c1e84..bbc2807bcd4a 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 @@ -2720,6 +2721,12 @@ 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; @@ -2734,6 +2741,7 @@ 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); @@ -2816,6 +2824,25 @@ 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", @@ -2823,5 +2850,7 @@ 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