On 2013年12月05日 11:48, Arnd Bergmann wrote:
On Tuesday 03 December 2013, Hanjun Guo wrote:
+ /*
+ * ACPI have no bindings to indicate SPI or PPI, so we
+ * use different mappings from DT in ACPI.
+ *
+ * For FDT
+ * PPI interrupt: in the range [0, 15];
+ * SPI interrupt: in the range [0, 987];
+ *
+ * For ACPI, using identity mapping for hwirq:
+ * PPI interrupt: in the range [16, 31];
+ * SPI interrupt: in the range [32, 1019];
This difference might cause endless confusion. Can't you register PPI and SPI as
separate IRQ controllers to have the same number space that we normally have?
In ACPI, they used a conception named GSI (Global System Interrupts)
for irq, GSI number can not be the same even if there are muti GICs,
so I use the identity mapping for hwirq for ACPI.
Thanks you very much for your comments :)
Hanjun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
