drm/i915: Per-DDI I_boost override
An OEM may request increased I_boost beyond the recommended values
by specifying an I_boost value to be applied to all swing entries for
a port. These override values are specified in VBT.
v2: rebase and remove unused iboost_bit variable
Issue: VIZ-5676
Signed-off-by: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index f7ad6a5..6d909ef 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -231,6 +231,10 @@
/* This one contains field offsets that are known to be common for all BDB
* versions. Notice that the meaning of the contents contents may still change,
* but at least the offsets are consistent. */
+
+/* Definitions for flags_1 */
+#define IBOOST_ENABLE (1<<3)
+
struct common_child_dev_config {
u16 handle;
u16 device_type;
@@ -239,8 +243,13 @@
u8 not_common2[2];
u8 ddc_pin;
u16 edid_ptr;
+ u8 obsolete;
+ u8 flags_1;
+ u8 not_common3[13];
+ u8 iboost_level;
} __packed;
+
/* This field changes depending on the BDB version, so the most reliable way to
* read it is by checking the BDB version and reading the raw pointer. */
union child_device_config {