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-rw-r--r--src/soc/intel/common/block/gpio/gpio.c24
-rw-r--r--src/soc/intel/common/block/include/intelblocks/gpio.h19
2 files changed, 43 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/gpio/gpio.c b/src/soc/intel/common/block/gpio/gpio.c
index 4398c9fb62..db7654537a 100644
--- a/src/soc/intel/common/block/gpio/gpio.c
+++ b/src/soc/intel/common/block/gpio/gpio.c
@@ -763,3 +763,27 @@ static void snapshot_cleanup(void *unused)
BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_EXIT, snapshot_cleanup, NULL);
BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, snapshot_cleanup, NULL);
+
+bool gpio_get_vw_info(gpio_t pad, unsigned int *vw_index, unsigned int *vw_bit)
+{
+ const struct pad_community *comm;
+ unsigned int offset = 0;
+ size_t i;
+
+ comm = gpio_get_community(pad);
+ for (i = 0; i < comm->num_vw_entries; i++) {
+ if (pad >= comm->vw_entries[i].first_pad && pad <= comm->vw_entries[i].last_pad)
+ break;
+
+ offset += 1 + comm->vw_entries[i].last_pad - comm->vw_entries[i].first_pad;
+ }
+
+ if (i == comm->num_vw_entries)
+ return false;
+
+ offset += pad - comm->vw_entries[i].first_pad;
+ *vw_index = comm->vw_base + offset / 8;
+ *vw_bit = offset % 8;
+
+ return true;
+}
diff --git a/src/soc/intel/common/block/include/intelblocks/gpio.h b/src/soc/intel/common/block/include/intelblocks/gpio.h
index a7419dca59..eab257361e 100644
--- a/src/soc/intel/common/block/include/intelblocks/gpio.h
+++ b/src/soc/intel/common/block/include/intelblocks/gpio.h
@@ -96,6 +96,12 @@ struct pad_group {
int acpi_pad_base;
};
+/* A range of consecutive virtual-wire entries in a community */
+struct vw_entries {
+ gpio_t first_pad;
+ gpio_t last_pad;
+};
+
/* This structure will be used to describe a community or each group within a
* community when multiple groups exist inside a community
*/
@@ -123,6 +129,13 @@ struct pad_community {
size_t num_reset_vals;
const struct pad_group *groups;
size_t num_groups;
+ unsigned int vw_base;
+ /*
+ * Note: The entries must be in the same order here as the order in
+ * which they map to VW indexes (beginning with VW base)
+ */
+ const struct vw_entries *vw_entries;
+ size_t num_vw_entries;
};
/*
@@ -237,5 +250,11 @@ bool gpio_routes_ioapic_irq(unsigned int irq);
size_t gpio_get_index_in_group(gpio_t pad);
+/*
+ * Returns true and stuffs out params for virtual-wire index and bit position
+ * for the given GPIO, otherwise false if there is no VW index for the pad.
+ */
+bool gpio_get_vw_info(gpio_t pad, unsigned int *vw_index, unsigned int *vw_bit);
+
#endif
#endif /* _SOC_INTELBLOCKS_GPIO_H_ */