On Fri, Jun 05, 2015 at 10:00:50AM +0300, Jarkko Nikula wrote:
Hi
On 06/04/2015 10:39 PM, Michele Curti wrote:
So, 6 possible IRQs for the LPE core, from 0x18 to 0x1D?
2 for DMA, 3 for SSP ports and 1 for host IPC. I don't know does Windows use those others as BIOS is exposing them but Linux needs only the host IPC irq 0x1d and Linux DSP FW is managing itself the rest.
Changed the code and tried all six
diff --git a/sound/soc/intel/common/sst-acpi.c b/sound/soc/intel/common/sst-acpi.c index bb28e84..a306502 100644 --- a/sound/soc/intel/common/sst-acpi.c +++ b/sound/soc/intel/common/sst-acpi.c @@ -149,8 +149,12 @@ static int sst_acpi_probe(struct platform_device *pdev) sst_pdata->dma_size = desc->dma_size; }
- if (desc->irqindex_host_ipc >= 0)
sst_pdata->irq = platform_get_irq(pdev, desc->irqindex_host_ipc);
if (desc->irqindex_host_ipc >= 0) {
sst_pdata->irq = 0x1D; /* acpi-dump, from 0x18 to 0x1D */pr_info("audio dsp: IRQ # was %d, force to %d\n",platform_get_irq(pdev, desc->irqindex_host_ipc),sst_pdata->irq);}
if (desc->resindex_lpe_base >= 0) { mmio = platform_get_resource(pdev, IORESOURCE_MEM,
without success, I get always the "dsp boot timeout".
Above probably won't work as it doesn't set the trigger flags as platform_get_irq() does and the Linux irq number is not necessarily the same than the HW irq number through the IOAPIC routing.
Good to know, thanks!
Your earlier irqindex_host_ipc change should get the right interrupt for Linux on your machine.
- .irqindex_host_ipc = 5,
- .irqindex_host_ipc = 0,
Unfortunately this index is machine specific and when I looked a few DSDT tables earlier I didn't figure out a clean way at which index the interrupt should be used in runtime. Probably having quirks for index 5 needs least amount of quirks as index 0 seems to be constantly used on newer machines.
Oh, understood.. Well, so for my tests I can restore this change thanks :)
Michele