It's the same stuff as in the new child devices.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
tools/intel_bios.h | 30 +++---------------------------
tools/intel_vbt_decode.c | 37 +++++++++++++++++++++----------------
2 files changed, 24 insertions(+), 43 deletions(-)
diff --git a/tools/intel_bios.h b/tools/intel_bios.h
index f0475b5cfcc3..78a96d977536 100644
--- a/tools/intel_bios.h
+++ b/tools/intel_bios.h
@@ -42,33 +42,9 @@
#define DEVICE_TYPE_DVI 0x68d2
#define DEVICE_TYPE_MIPI 0x7cc2
-struct legacy_child_device_config {
- uint16_t handle;
- uint16_t device_type; /* See DEVICE_TYPE_* above */
- uint8_t device_id[10];
- uint16_t addin_offset;
- uint8_t dvo_port; /* See DEVICE_PORT_* above */
- uint8_t i2c_pin;
- uint8_t slave_addr;
- uint8_t ddc_pin;
- uint16_t edid_ptr;
- uint8_t dvo_cfg; /* See DEVICE_CFG_* above */
- uint8_t dvo2_port;
- uint8_t i2c2_pin;
- uint8_t slave2_addr;
- uint8_t ddc2_pin;
- uint8_t capabilities;
- uint8_t dvo_wiring; /* See DEVICE_WIRE_* above */
- uint8_t dvo2_wiring;
- uint16_t extended_type;
- uint8_t dvo_function;
-} __attribute__ ((packed));
-
-#define DEVICE_CHILD_SIZE 7
-
-struct bdb_child_devices {
- uint8_t child_structure_size;
- struct legacy_child_device_config children[DEVICE_CHILD_SIZE];
+struct bdb_legacy_child_devices {
+ uint8_t child_dev_size;
+ uint8_t devices[0]; /* presumably 7 * 33 */
} __attribute__ ((packed));
#define BDB_DRIVER_NO_LVDS 0
diff --git a/tools/intel_vbt_decode.c b/tools/intel_vbt_decode.c
index bc5f38112619..3cce60bf2ee2 100644
--- a/tools/intel_vbt_decode.c
+++ b/tools/intel_vbt_decode.c
@@ -526,25 +526,30 @@ static void dump_general_definitions(struct context *context,
static void dump_legacy_child_devices(struct context *context,
const struct bdb_block *block)
{
- const struct bdb_child_devices *child_devs = block->data;
- const struct legacy_child_device_config *child;
+ const struct bdb_legacy_child_devices *defs = block->data;
+ struct child_device_config *child;
int i;
+ int child_device_num;
- for (i = 0; i < DEVICE_CHILD_SIZE; i++) {
- child = &child_devs->children[i];
- /* Skip nonexistent children */
- if (!child->device_type)
- continue;
- printf("\tChild device %d\n", i);
- printf("\t\tType: 0x%04x (%s)\n", child->device_type,
- child_device_type(child->device_type));
- printf("\t\tDVO port: 0x%02x\n", child->dvo_port);
- printf("\t\tI2C pin: 0x%02x\n", child->i2c_pin);
- printf("\t\tSlave addr: 0x%02x\n", child->slave_addr);
- printf("\t\tDDC pin: 0x%02x\n", child->ddc_pin);
- printf("\t\tDVO config: 0x%02x\n", child->dvo_cfg);
- printf("\t\tDVO wiring: 0x%02x\n", child->dvo_wiring);
+ printf("\tChild device size: %d\n", defs->child_dev_size);
+ child_device_num = (block->size - sizeof(*defs)) /
+ defs->child_dev_size;
+
+ /*
+ * Use a temp buffer so dump_child_device() doesn't have to worry about
+ * accessing the struct beyond child_dev_size. The tail, if any, remains
+ * initialized to zero.
+ */
+ child = calloc(1, sizeof(*child));
+
+ for (i = 0; i < child_device_num; i++) {
+ memcpy(child, &defs->devices[i * defs->child_dev_size],
+ min(sizeof(*child), defs->child_dev_size));
+
+ dump_child_device(context, child);
}
+
+ free(child);
}
static void dump_lvds_options(struct context *context,
--
2.11.0
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