diff options
| author | Lee Shawn C <shawn.c.lee@intel.com> | 2021-02-18 13:23:33 +0800 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2021-02-20 12:16:38 +0200 |
| commit | b60e320bf35971e67b6afabd5614c6196b3be95d (patch) | |
| tree | 2b720ea0788cd7a67e39421848574736ac2a728a /drivers/gpu/drm/i915/display/intel_vbt_defs.h | |
| parent | 1835bf459df752d13f9fbae37a521a471172d3d1 (diff) | |
drm/i915/vbt: update DP max link rate table
According to Bspec #20124, max link rate table for DP was updated
at BDB version 230. Max link rate can support upto UHBR.
After migrate to BDB v230, the definition for LBR, HBR2 and HBR3
were changed. For backward compatibility. If BDB version was
from 216 to 229. Driver have to follow original rule to configure
DP max link rate value from VBT.
v2: split the mapping table to two for old and new BDB definition.
v3: return link rate instead of assigning it.
v4: remove the useless variable.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Cc: William Tseng <william.tseng@intel.com>
Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
[vsyrjala: Try to retain the comment that VBT version 216 added some of this]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210218052333.16109-1-shawn.c.lee@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_vbt_defs.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vbt_defs.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index 6d10fa037751..dbe24d7e7375 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -343,10 +343,21 @@ enum vbt_gmbus_ddi { #define DP_AUX_H 0x80 #define DP_AUX_I 0x90 -#define VBT_DP_MAX_LINK_RATE_HBR3 0 -#define VBT_DP_MAX_LINK_RATE_HBR2 1 -#define VBT_DP_MAX_LINK_RATE_HBR 2 -#define VBT_DP_MAX_LINK_RATE_LBR 3 +/* DP max link rate 216+ */ +#define BDB_216_VBT_DP_MAX_LINK_RATE_HBR3 0 +#define BDB_216_VBT_DP_MAX_LINK_RATE_HBR2 1 +#define BDB_216_VBT_DP_MAX_LINK_RATE_HBR 2 +#define BDB_216_VBT_DP_MAX_LINK_RATE_LBR 3 + +/* DP max link rate 230+ */ +#define BDB_230_VBT_DP_MAX_LINK_RATE_DEF 0 +#define BDB_230_VBT_DP_MAX_LINK_RATE_LBR 1 +#define BDB_230_VBT_DP_MAX_LINK_RATE_HBR 2 +#define BDB_230_VBT_DP_MAX_LINK_RATE_HBR2 3 +#define BDB_230_VBT_DP_MAX_LINK_RATE_HBR3 4 +#define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR10 5 +#define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR13P5 6 +#define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR20 7 /* * The child device config, aka the display device data structure, provides a @@ -445,8 +456,8 @@ struct child_device_config { u16 dp_gpio_pin_num; /* 195 */ u8 dp_iboost_level:4; /* 196 */ u8 hdmi_iboost_level:4; /* 196 */ - u8 dp_max_link_rate:2; /* 216 CNL+ */ - u8 dp_max_link_rate_reserved:6; /* 216 */ + u8 dp_max_link_rate:3; /* 216/230 CNL+ */ + u8 dp_max_link_rate_reserved:5; /* 216/230 */ } __packed; struct bdb_general_definitions { |