drm/i915/icl: update VBT's child_device_config flags2 field

Some bits from the flags2 field are going to be used in the next
patches, so replace the whole-byte definition with the actual bits and
document their versions.

This patch is based on a patch by Animesh Manna.

Cc: Animesh Manna <animesh.manna@intel.com>
Credits-to: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180614221018.19044-2-paulo.r.zanoni@intel.com

diff --git a/drivers/gpu/drm/i915/intel_vbt_defs.h b/drivers/gpu/drm/i915/intel_vbt_defs.h
index c132d0c3a500c413cfa00ccb0fee3ccb50fe3940..c614c9f3f28bcd89e3b576704ad0727599974b8d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/intel_vbt_defs.h
@@ -420,7 +420,9 @@ struct child_device_config {
        u16 extended_type;
        u8 dvo_function;
        u8 dp_usb_type_c:1;                                     /* 195 */
-       u8 flags2_reserved:7;                                   /* 195 */
+       u8 tbt:1;                                               /* 209 */
+       u8 flags2_reserved:2;                                   /* 195 */
+       u8 dp_port_trace_length:4;                              /* 209 */
        u8 dp_gpio_index;                                       /* 195 */
        u16 dp_gpio_pin_num;                                    /* 195 */
        u8 dp_iboost_level:4;                                   /* 196 */