soc/intel/common/gpio: vm index changes as PTL vm entries are not continuous

Add specific virtual wire mapping structure for:
- First pad group does not starts with bit position 0.
- vw_index and position are not continuous in between groups within a
  community.

BUG=
TEST=boot to OS and use iotools to read the registers that use 16-bit
port ID such as IOM AUX Bias Ctrl register to verify the 16-bit group
ID field.

Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Change-Id: I986d4f4fe59b110e5075cab8742dfe8b336d034b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83997
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/gpio.h b/src/soc/intel/common/block/include/intelblocks/gpio.h
index 39d17a199a..a501f7fd54 100644
--- a/src/soc/intel/common/block/include/intelblocks/gpio.h
+++ b/src/soc/intel/common/block/include/intelblocks/gpio.h
@@ -110,6 +110,12 @@ struct vw_entries {
 	gpio_t last_pad;
 };
 
+/* virtual-wire mapping base and the starting bit position for a group */
+struct vw_map {
+	uint8_t base;
+	uint8_t start_pos;
+};
+
 /* This structure will be used to describe a community or each group within a
  * community when multiple groups exist inside a community
  */
@@ -152,6 +158,7 @@ struct pad_community {
 	 * which they map to VW indexes (beginning with VW base)
 	 */
 	const struct vw_entries	*vw_entries;
+	const struct vw_map *vw_map;
 	size_t		num_vw_entries;
 };