[PATCH i-g-t 05/27] tools/intel_vbt_decode: Decode block 4 (Mode Support List)
Ville Syrjala
ville.syrjala at linux.intel.com
Fri Jun 7 13:57:36 UTC 2024
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Decode VBT block 4 (Mode Support List). The contents are just
some kind of list of "Intel mode numbers" (whateer those are).
Example output:
BDB block 4 (28 bytes, min 2 bytes) - Mode support list:
0000: 04 1c 00 30 32 34 36 38 3a 3c 40 42 44 46 48 4a
0010: 4c 50 52 54 56 58 5a 5c 80 81 82 83 84 1a 00
Intel mode numbers:
0x30
...
0x84
Mode list length: 26
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
tools/intel_vbt_decode.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/tools/intel_vbt_decode.c b/tools/intel_vbt_decode.c
index 4281bd7e520e..845f26828c44 100644
--- a/tools/intel_vbt_decode.c
+++ b/tools/intel_vbt_decode.c
@@ -318,6 +318,8 @@ static size_t block_min_size(const struct context *context, int section_id)
return sizeof(struct bdb_general_definitions);
case BDB_DISPLAY_TOGGLE:
return sizeof(struct bdb_display_toggle);
+ case BDB_MODE_SUPPORT_LIST:
+ return sizeof(struct bdb_mode_support_list);
case BDB_PSR:
return sizeof(struct bdb_psr);
case BDB_CHILD_DEVICE_TABLE:
@@ -1265,6 +1267,20 @@ static void dump_display_toggle(struct context *context,
t->list[i]);
}
+static void dump_mode_support_list(struct context *context,
+ const struct bdb_block *block)
+{
+ const struct bdb_mode_support_list *l =
+ block_data(block) + block->size - sizeof(*l);
+ const uint8_t *mode_number = block_data(block);
+
+ printf("\tIntel mode numbers:\n");
+ for (int i = 0 ; i < l->mode_list_length; i++)
+ printf("\t\t0x%02x\n", mode_number[i]);
+
+ printf("\tMode list length: %d\n", l->mode_list_length);
+}
+
static void dump_legacy_child_devices(struct context *context,
const struct bdb_block *block)
{
@@ -2748,6 +2764,11 @@ struct dumper dumpers[] = {
.name = "Display toggle option block",
.dump = dump_display_toggle,
},
+ {
+ .id = BDB_MODE_SUPPORT_LIST,
+ .name = "Mode support list",
+ .dump = dump_mode_support_list,
+ },
{
.id = BDB_PSR,
.min_bdb_version = 165,
--
2.44.2
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