platform/x86/intel: tpmi: Remove hardcoded unit and offset

Use sizeof(u32) for TPMI entry size units. Also add a define
for capability offset unit size.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20230617014447.2543592-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Author: spandruvada

drivers/platform/x86/intel/tpmi.c

@@ -222,7 +222,7 @@ static int tpmi_create_device(struct intel_tpmi_info *tpmi_info,
 	snprintf(feature_id_name, sizeof(feature_id_name), "tpmi-%s", name);
 
 	for (i = 0, tmp = res; i < pfs->pfs_header.num_entries; i++, tmp++) {
-		u64 entry_size_bytes = pfs->pfs_header.entry_size * 4;
+		u64 entry_size_bytes = pfs->pfs_header.entry_size * sizeof(u32);
 
 		tmp->start = pfs->vsec_offset + entry_size_bytes * i;
 		tmp->end = tmp->start + entry_size_bytes - 1;
@@ -277,7 +277,7 @@ static int tpmi_process_info(struct intel_tpmi_info *tpmi_info,
 	void __iomem *info_mem;
 
 	info_mem = ioremap(pfs->vsec_offset + TPMI_INFO_BUS_INFO_OFFSET,
-			   pfs->pfs_header.entry_size * 4 - TPMI_INFO_BUS_INFO_OFFSET);
+			   pfs->pfs_header.entry_size * sizeof(u32) - TPMI_INFO_BUS_INFO_OFFSET);
 	if (!info_mem)
 		return -ENOMEM;
 
@@ -308,6 +308,8 @@ static int tpmi_fetch_pfs_header(struct intel_tpmi_pm_feature *pfs, u64 start, i
 	return 0;
 }
 
+#define TPMI_CAP_OFFSET_UNIT	1024
+
 static int intel_vsec_tpmi_init(struct auxiliary_device *auxdev)
 {
 	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
@@ -354,7 +356,7 @@ static int intel_vsec_tpmi_init(struct auxiliary_device *auxdev)
 		if (!pfs_start)
 			pfs_start = res_start;
 
-		pfs->pfs_header.cap_offset *= 1024;
+		pfs->pfs_header.cap_offset *= TPMI_CAP_OFFSET_UNIT;
 
 		pfs->vsec_offset = pfs_start + pfs->pfs_header.cap_offset;