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orion fixes for v3.7 

- dove irq fix
  - kirkwood pcie fix
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Merge tag 'orion_fixes_for_3.7' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper:

orion fixes for v3.7
 - dove irq fix
 - kirkwood pcie fix

* tag 'orion_fixes_for_3.7' of git://git.infradead.org/users/jcooper/linux:
  ARM: Kirkwood: Update PCI-E fixup
  Dove: Fix irq_to_pmu()
  Dove: Attempt to fix PMU/RTC interrupts
This commit is contained in:
Olof Johansson 2012-11-25 22:02:47 -08:00
parent c667f757f3 1dc831bf53
commit 70e1584d47
4 changed files with 23 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/Kconfig
View File

@ -547,6 +547,7 @@ config ARCH_KIRKWOOD
select CPU_FEROCEON
select GENERIC_CLOCKEVENTS
select PCI
select PCI_QUIRKS
select PLAT_ORION_LEGACY
help
Support for the following Marvell Kirkwood series SoCs:

2
arch/arm/mach-dove/include/mach/pm.h
View File

@ -63,7 +63,7 @@ static inline int pmu_to_irq(int pin)
static inline int irq_to_pmu(int irq)
{
if (IRQ_DOVE_PMU_START < irq && irq < NR_IRQS)
if (IRQ_DOVE_PMU_START <= irq && irq < NR_IRQS)
return irq - IRQ_DOVE_PMU_START;
return -EINVAL;

14
arch/arm/mach-dove/irq.c
View File

@ -46,8 +46,20 @@ static void pmu_irq_ack(struct irq_data *d)
int pin = irq_to_pmu(d->irq);
u32 u;
/*
* The PMU mask register is not RW0C: it is RW. This means that
* the bits take whatever value is written to them; if you write
* a '1', you will set the interrupt.
*
* Unfortunately this means there is NO race free way to clear
* these interrupts.
*
* So, let's structure the code so that the window is as small as
* possible.
*/
u = ~(1 << (pin & 31));
writel(u, PMU_INTERRUPT_CAUSE);
u &= readl_relaxed(PMU_INTERRUPT_CAUSE);
writel_relaxed(u, PMU_INTERRUPT_CAUSE);
}
static struct irq_chip pmu_irq_chip = {

11
arch/arm/mach-kirkwood/pcie.c
View File

@ -207,14 +207,19 @@ static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys)
return 1;
}
/*
* The root complex has a hardwired class of PCI_CLASS_MEMORY_OTHER, when it
* is operating as a root complex this needs to be switched to
* PCI_CLASS_BRIDGE_HOST or Linux will errantly try to process the BAR's on
* the device. Decoding setup is handled by the orion code.
*/
static void __devinit rc_pci_fixup(struct pci_dev *dev)
{
/*
* Prevent enumeration of root complex.
*/
if (dev->bus->parent == NULL && dev->devfn == 0) {
int i;
dev->class &= 0xff;
dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
dev->resource[i].start = 0;
dev->resource[i].end = 0;