Duncan Laurie (dlaurie@chromium.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16671
-gerrit
commit 28295c9dba9e04565e125b306c8d6a96586f7381 Author: Duncan Laurie dlaurie@chromium.org Date: Mon Sep 19 12:05:49 2016 -0700
soc/intel/apollolake: Add function to read and clear GPE status
Implement the generic acpi_get_gpe() function to read and clear the GPE status for a specific GPE.
Tested by watching GPE status in a loop while generating interrupts manually from the EC console.
BUG=chrome-os-partner:53336
Change-Id: I482ff52051a48441333b573f1cd0fa7f7579a6ab Signed-off-by: Duncan Laurie dlaurie@chromium.org --- src/soc/intel/apollolake/pmutil.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/src/soc/intel/apollolake/pmutil.c b/src/soc/intel/apollolake/pmutil.c index 2aef18c..56bb33d 100644 --- a/src/soc/intel/apollolake/pmutil.c +++ b/src/soc/intel/apollolake/pmutil.c @@ -17,6 +17,7 @@
#define __SIMPLE_DEVICE__
+#include <arch/acpi.h> #include <arch/io.h> #include <console/console.h> #include <cbmem.h> @@ -301,6 +302,26 @@ uint32_t clear_gpe_status(void) return print_gpe_sts(reset_gpe_status()); }
+/* Read and clear GPE status (defined in arch/acpi.h) */ +int acpi_get_gpe(int gpe) +{ + int bank; + uint32_t mask, sts; + + if (gpe < 0 || gpe > GPE0_DW3_31) + return -1; + + bank = gpe / 32; + mask = 1 << (gpe % 32); + + sts = inl(ACPI_PMIO_BASE + GPE0_STS(bank)); + if (sts & mask) { + outl(mask, ACPI_PMIO_BASE + GPE0_STS(bank)); + return 1; + } + return 0; +} + void clear_pmc_status(void) { uint32_t prsts;