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PCI: altera-msi: Allow building as module 

Altera MSI IP is a soft IP and is only available after
an FPGA image (with design containing it) is programmed.

Make driver modulable to support use case FPGA image is programmed the
after 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>
This commit is contained in:
Ley Foon Tan 2019-04-24 12:57:15 +08:00 committed by Lorenzo Pieralisi
parent ec15c4d0d5
commit c7ddfd3514
2 changed files with 11 additions and 1 deletions
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2
drivers/pci/controller/Kconfig
View File

@ -181,7 +181,7 @@ config PCIE_ALTERA
FPGA.
config PCIE_ALTERA_MSI
bool "Altera PCIe MSI feature"
tristate "Altera PCIe MSI feature"
depends on PCIE_ALTERA
depends on PCI_MSI_IRQ_DOMAIN
help

10
drivers/pci/controller/pcie-altera-msi.c
View File

@ -10,6 +10,7 @@
#include <linux/interrupt.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/msi.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@ -288,4 +289,13 @@ static int __init altera_msi_init(void)
{
return platform_driver_register(&altera_msi_driver);
}
static void __exit altera_msi_exit(void)
{
platform_driver_unregister(&altera_msi_driver);
}
subsys_initcall(altera_msi_init);
MODULE_DEVICE_TABLE(of, altera_msi_of_match);
module_exit(altera_msi_exit);
MODULE_LICENSE("GPL v2");