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| author | Manasi Navare <manasi.d.navare@intel.com> | 2018-01-22 14:43:10 -0800 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-01-26 13:36:53 +0200 |
| commit | e0bd878a959008f02a1280b1dd2c128324586af3 (patch) | |
| tree | cdc2fd20979e17ae8cb111fb93bc5afed5840f32 /drivers/gpu/drm | |
| parent | a35f2f34b5b4ea079abefb644ac4f828c30e9a5d (diff) | |
| download | linux-stable-e0bd878a959008f02a1280b1dd2c128324586af3.tar.gz linux-stable-e0bd878a959008f02a1280b1dd2c128324586af3.tar.bz2 linux-stable-e0bd878a959008f02a1280b1dd2c128324586af3.zip | |
drm/dp: Add HBR3 support in existing DRM DP helpers
Existing helpers add support upto HBR2. This patch
adds support for HBR3 rate (8.1 Gbps) introduced as
part of DP 1.4 specification.
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1516660991-20697-1-git-send-email-manasi.d.navare@intel.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_helper.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index adf79be42c1e..ffe14ec3e7f2 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -146,6 +146,8 @@ u8 drm_dp_link_rate_to_bw_code(int link_rate) return DP_LINK_BW_2_7; case 540000: return DP_LINK_BW_5_4; + case 810000: + return DP_LINK_BW_8_1; } } EXPORT_SYMBOL(drm_dp_link_rate_to_bw_code); @@ -161,6 +163,8 @@ int drm_dp_bw_code_to_link_rate(u8 link_bw) return 270000; case DP_LINK_BW_5_4: return 540000; + case DP_LINK_BW_8_1: + return 810000; } } EXPORT_SYMBOL(drm_dp_bw_code_to_link_rate); diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 70dcfa58d3c2..36df7df5fe1a 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2087,6 +2087,9 @@ static bool drm_dp_get_vc_payload_bw(int dp_link_bw, case DP_LINK_BW_5_4: *out = 10 * dp_link_count; break; + case DP_LINK_BW_8_1: + *out = 15 * dp_link_count; + break; } return true; } |