diff options
| author | Ley Foon Tan | 2019-04-24 06:57:14 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi | 2019-05-30 16:28:01 +0200 |
| commit | ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 (patch) | |
| tree | bd01cf8a894bb339051716fd86ab5c14ff783be2 /drivers/pci | |
| parent | Linux 5.2-rc1 (diff) | |
| download | kernel-qcow2-linux-ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22.tar.gz kernel-qcow2-linux-ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22.tar.xz kernel-qcow2-linux-ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22.zip | |
PCI: altera: Allow building as module
Altera PCIe Rootport IP is a soft IP and is only available after
an FPGA image (whose design contains it) is programmed.
Make driver modulable to support use cases when FPGA image is
programmed after the kernel has booted, so that the driver
can be loaded upon request.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/pci/controller/pcie-altera.c | 28 |
2 files changed, 27 insertions, 3 deletions
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig index 011c57cae4b0..89906351bd3f 100644 --- a/drivers/pci/controller/Kconfig +++ b/drivers/pci/controller/Kconfig @@ -174,7 +174,7 @@ config PCIE_IPROC_MSI PCIe controller config PCIE_ALTERA - bool "Altera PCIe controller" + tristate "Altera PCIe controller" depends on ARM || NIOS2 || ARM64 || COMPILE_TEST help Say Y here if you want to enable PCIe controller support on Altera diff --git a/drivers/pci/controller/pcie-altera.c b/drivers/pci/controller/pcie-altera.c index 27edcebd1726..27222071ace7 100644 --- a/drivers/pci/controller/pcie-altera.c +++ b/drivers/pci/controller/pcie-altera.c @@ -10,6 +10,7 @@ #include <linux/interrupt.h> #include <linux/irqchip/chained_irq.h> #include <linux/init.h> +#include <linux/module.h> #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/of_irq.h> @@ -705,6 +706,13 @@ static int altera_pcie_init_irq_domain(struct altera_pcie *pcie) return 0; } +static void altera_pcie_irq_teardown(struct altera_pcie *pcie) +{ + irq_set_chained_handler_and_data(pcie->irq, NULL, NULL); + irq_domain_remove(pcie->irq_domain); + irq_dispose_mapping(pcie->irq); +} + static int altera_pcie_parse_dt(struct altera_pcie *pcie) { struct device *dev = &pcie->pdev->dev; @@ -798,6 +806,7 @@ static int altera_pcie_probe(struct platform_device *pdev) pcie = pci_host_bridge_priv(bridge); pcie->pdev = pdev; + platform_set_drvdata(pdev, pcie); match = of_match_device(altera_pcie_of_match, &pdev->dev); if (!match) @@ -855,13 +864,28 @@ static int altera_pcie_probe(struct platform_device *pdev) return ret; } +static int altera_pcie_remove(struct platform_device *pdev) +{ + struct altera_pcie *pcie = platform_get_drvdata(pdev); + struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie); + + pci_stop_root_bus(bridge->bus); + pci_remove_root_bus(bridge->bus); + pci_free_resource_list(&pcie->resources); + altera_pcie_irq_teardown(pcie); + + return 0; +} + static struct platform_driver altera_pcie_driver = { .probe = altera_pcie_probe, + .remove = altera_pcie_remove, .driver = { .name = "altera-pcie", .of_match_table = altera_pcie_of_match, - .suppress_bind_attrs = true, }, }; -builtin_platform_driver(altera_pcie_driver); +MODULE_DEVICE_TABLE(of, altera_pcie_of_match); +module_platform_driver(altera_pcie_driver); +MODULE_LICENSE("GPL v2"); |