hal: add support to override volume gain to step mapping table
- if customer mapping is added in platform info file, use that
- in absence of customer table use default mapping
BUG 28897755
Change-Id: I4bf8bcf1913f16ad6298ff1f3fa5dd649c889b2a
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 220ccbb..f8ab959 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -2733,3 +2733,53 @@
}
return 0;
}
+
+static struct amp_db_and_gain_table tbl_mapping[MAX_VOLUME_CAL_STEPS];
+static int num_gain_tbl_entry = 0;
+
+bool platform_add_gain_level_mapping(struct amp_db_and_gain_table *tbl_entry) {
+
+ ALOGV("%s: enter .. add %f %f %d", __func__, tbl_entry->amp, tbl_entry->db, tbl_entry->level);
+ if (num_gain_tbl_entry == -1) {
+ ALOGE("%s: num entry beyond valid step levels or corrupted..rejecting custom mapping",
+ __func__);
+ return false;
+ }
+
+ if (num_gain_tbl_entry >= MAX_VOLUME_CAL_STEPS) {
+ ALOGE("%s: max entry reached max[%d] current index[%d] .. rejecting", __func__,
+ MAX_VOLUME_CAL_STEPS, num_gain_tbl_entry);
+ num_gain_tbl_entry = -1; // indicates error and no more info will be cached
+ return false;
+ }
+
+ if (num_gain_tbl_entry > 0 && tbl_mapping[num_gain_tbl_entry - 1].amp >= tbl_entry->amp) {
+ ALOGE("%s: value not in ascending order .. rejecting custom mapping", __func__);
+ num_gain_tbl_entry = -1; // indicates error and no more info will be cached
+ return false;
+ }
+
+ tbl_mapping[num_gain_tbl_entry] = *tbl_entry;
+ ++num_gain_tbl_entry;
+
+ return true;
+}
+
+int platform_get_gain_level_mapping(struct amp_db_and_gain_table *mapping_tbl,
+ int table_size) {
+ int itt = 0;
+ ALOGV("platform_get_gain_level_mapping called ");
+
+ if (num_gain_tbl_entry <= 0 || num_gain_tbl_entry > MAX_VOLUME_CAL_STEPS) {
+ ALOGD("%s: empty or currupted gain_mapping_table", __func__);
+ return 0;
+ }
+
+ for (; itt < num_gain_tbl_entry && itt <= table_size; itt++) {
+ mapping_tbl[itt] = tbl_mapping[itt];
+ ALOGV("%s: added amp[%f] db[%f] level[%d]", __func__,
+ mapping_tbl[itt].amp, mapping_tbl[itt].db, mapping_tbl[itt].level);
+ }
+
+ return num_gain_tbl_entry;
+}