mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-28 09:39:00 +00:00
672a8cd6ba
Changes include PCI fixes and various upstream pending patches. Signed-off-by: Luka Perkov <luka@openwrt.org> SVN-Revision: 38624
44 lines
1.3 KiB
Diff
44 lines
1.3 KiB
Diff
From: Tim Harvey <tharvey@gateworks.com>
|
|
Subject: [PATCH] PCI: imx6: add support for legacy irqs
|
|
|
|
The i.MX6 supports legacy IRQ's via 155,154,153,152. When devices
|
|
are behind a PCIe-to-PCIe switch (at least for the TI XIO2001) the
|
|
mapping is reversed from when they are behind a PCIe switch.
|
|
|
|
This patch still needs some review and clarification before going
|
|
upstream.
|
|
---
|
|
drivers/pci/host/pcie-designware.c | 21 ++++++++++++++++++++-
|
|
1 file changed, 20 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/pci/host/pcie-designware.c
|
|
+++ b/drivers/pci/host/pcie-designware.c
|
|
@@ -447,7 +447,26 @@ int dw_pcie_map_irq(const struct pci_dev
|
|
{
|
|
struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata);
|
|
|
|
- return pp->irq;
|
|
+ /* TI XIO2001 PCIe-to-PCI bridge IRQs are flipped it seems */
|
|
+ if ( dev->bus && dev->bus->self
|
|
+ && (dev->bus->self->vendor == 0x104c)
|
|
+ && (dev->bus->self->device == 0x8240)) {
|
|
+ switch (pin) {
|
|
+ case 1: return pp->irq - 3;
|
|
+ case 2: return pp->irq - 2;
|
|
+ case 3: return pp->irq - 1;
|
|
+ case 4: return pp->irq;
|
|
+ default: return -1;
|
|
+ }
|
|
+ } else {
|
|
+ switch (pin) {
|
|
+ case 1: return pp->irq;
|
|
+ case 2: return pp->irq - 1;
|
|
+ case 3: return pp->irq - 2;
|
|
+ case 4: return pp->irq - 3;
|
|
+ default: return -1;
|
|
+ }
|
|
+ }
|
|
}
|
|
|
|
static struct hw_pci dw_pci = {
|