soc/intel/common: Add CPU Port ID field to GPIO communities

The CPU can have its own Port IDs when addressing GPIO communities, which
differ from the PCH PCR IDs.

1) Add a field to `struct pad_community` that can hold this value when
   known.
2) Add a function to return this value for a given GPIO pad.

Change-Id: I007c01758ae3026fe4dfef07b6a3a269ee3f9e33
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52590
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/gpio/gpio.c b/src/soc/intel/common/block/gpio/gpio.c
index db7654537a..8dc92ffb34 100644
--- a/src/soc/intel/common/block/gpio/gpio.c
+++ b/src/soc/intel/common/block/gpio/gpio.c
@@ -787,3 +787,9 @@ bool gpio_get_vw_info(gpio_t pad, unsigned int *vw_index, unsigned int *vw_bit)
 
 	return true;
 }
+
+unsigned int gpio_get_pad_cpu_portid(gpio_t pad)
+{
+	const struct pad_community *comm = gpio_get_community(pad);
+	return comm->cpu_port;
+}