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| author | Suraj Kandpal <suraj.kandpal@intel.com> | 2025-08-21 09:56:51 +0530 |
|---|---|---|
| committer | Suraj Kandpal <suraj.kandpal@intel.com> | 2025-08-25 09:53:10 +0530 |
| commit | 4d33c77cf2c3e8842c2f722e1efb6010b021dbc0 (patch) | |
| tree | 2569e8fff736948ef2115283c4d907d745fabef0 /drivers/gpu | |
| parent | drm/i915/psr: Check pause counter before continuing to PSR activation (diff) | |
| download | linux-4d33c77cf2c3e8842c2f722e1efb6010b021dbc0.tar.gz linux-4d33c77cf2c3e8842c2f722e1efb6010b021dbc0.zip | |
drm/i915/vbt: Add eDP Data rate overrride field in VBT
Add edp_data_rate_override field VBT which gives us a mask
of rates which needs to be skipped in favour of
subsequent higher rate.
--v2
-Rename vbt field [Jani]
-Fix comment to 263+ [Jani]
-Use BIT_U32 [Jani]
-Fix the bits assignment in vbt [Jani]
--v3
-Add a mask which represents all link rates [Ankit]
Bspec: 20124
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://lore.kernel.org/r/20250821042653.269227-2-suraj.kandpal@intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vbt_defs.h | 18 |
2 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 8de332c627f8..cf464c68441a 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -2748,8 +2748,10 @@ static int child_device_expected_size(u16 version) { BUILD_BUG_ON(sizeof(struct child_device_config) < 40); - if (version > 256) + if (version > 263) return -ENOENT; + else if (version >= 263) + return 44; else if (version >= 256) return 40; else if (version >= 216) diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index 6612d3a4ec49..70e31520c560 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -437,6 +437,22 @@ enum vbt_gmbus_ddi { #define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR13P5 6 #define BDB_230_VBT_DP_MAX_LINK_RATE_UHBR20 7 +/* EDP link rate 263+ */ +#define BDB_263_VBT_EDP_LINK_RATE_1_62 BIT_U32(0) +#define BDB_263_VBT_EDP_LINK_RATE_2_16 BIT_U32(1) +#define BDB_263_VBT_EDP_LINK_RATE_2_43 BIT_U32(2) +#define BDB_263_VBT_EDP_LINK_RATE_2_7 BIT_U32(3) +#define BDB_263_VBT_EDP_LINK_RATE_3_24 BIT_U32(4) +#define BDB_263_VBT_EDP_LINK_RATE_4_32 BIT_U32(5) +#define BDB_263_VBT_EDP_LINK_RATE_5_4 BIT_U32(6) +#define BDB_263_VBT_EDP_LINK_RATE_6_75 BIT_U32(7) +#define BDB_263_VBT_EDP_LINK_RATE_8_1 BIT_U32(8) +#define BDB_263_VBT_EDP_LINK_RATE_10 BIT_U32(9) +#define BDB_263_VBT_EDP_LINK_RATE_13_5 BIT_U32(10) +#define BDB_263_VBT_EDP_LINK_RATE_20 BIT_U32(11) +#define BDB_263_VBT_EDP_NUM_RATES 12 +#define BDB_263_VBT_EDP_RATES_MASK GENMASK(BDB_263_VBT_EDP_NUM_RATES - 1, 0) + /* * The child device config, aka the display device data structure, provides a * description of a port and its configuration on the platform. @@ -547,6 +563,8 @@ struct child_device_config { u8 dp_max_link_rate:3; /* 216+ */ u8 dp_max_link_rate_reserved:5; /* 216+ */ u8 efp_index; /* 256+ */ + u32 edp_data_rate_override:12; /* 263+ */ + u32 edp_data_rate_override_reserved:20; /* 263+ */ } __packed; struct bdb_general_definitions { |