diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 60 |
1 files changed, 2 insertions, 58 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 0de94fc6289b..284b15f84592 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4449,62 +4449,6 @@ intel_dp_link_down(struct intel_encoder *encoder, } } -static void -intel_dp_extended_receiver_capabilities(struct intel_dp *intel_dp) -{ - struct drm_i915_private *i915 = dp_to_i915(intel_dp); - u8 dpcd_ext[6]; - - /* - * Prior to DP1.3 the bit represented by - * DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT was reserved. - * if it is set DP_DPCD_REV at 0000h could be at a value less than - * the true capability of the panel. The only way to check is to - * then compare 0000h and 2200h. - */ - if (!(intel_dp->dpcd[DP_TRAINING_AUX_RD_INTERVAL] & - DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT)) - return; - - if (drm_dp_dpcd_read(&intel_dp->aux, DP_DP13_DPCD_REV, - &dpcd_ext, sizeof(dpcd_ext)) != sizeof(dpcd_ext)) { - drm_err(&i915->drm, - "DPCD failed read at extended capabilities\n"); - return; - } - - if (intel_dp->dpcd[DP_DPCD_REV] > dpcd_ext[DP_DPCD_REV]) { - drm_dbg_kms(&i915->drm, - "DPCD extended DPCD rev less than base DPCD rev\n"); - return; - } - - if (!memcmp(intel_dp->dpcd, dpcd_ext, sizeof(dpcd_ext))) - return; - - drm_dbg_kms(&i915->drm, "Base DPCD: %*ph\n", - (int)sizeof(intel_dp->dpcd), intel_dp->dpcd); - - memcpy(intel_dp->dpcd, dpcd_ext, sizeof(dpcd_ext)); -} - -bool -intel_dp_read_dpcd(struct intel_dp *intel_dp) -{ - struct drm_i915_private *i915 = dp_to_i915(intel_dp); - - if (drm_dp_dpcd_read(&intel_dp->aux, 0x000, intel_dp->dpcd, - sizeof(intel_dp->dpcd)) < 0) - return false; /* aux transfer failed */ - - intel_dp_extended_receiver_capabilities(intel_dp); - - drm_dbg_kms(&i915->drm, "DPCD: %*ph\n", (int)sizeof(intel_dp->dpcd), - intel_dp->dpcd); - - return intel_dp->dpcd[DP_DPCD_REV] != 0; -} - bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp) { u8 dprx = 0; @@ -4563,7 +4507,7 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp) /* this function is meant to be called only once */ drm_WARN_ON(&dev_priv->drm, intel_dp->dpcd[DP_DPCD_REV] != 0); - if (!intel_dp_read_dpcd(intel_dp)) + if (drm_dp_read_dpcd_caps(&intel_dp->aux, intel_dp->dpcd) != 0) return false; drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc, @@ -4650,7 +4594,7 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp) { int ret; - if (!intel_dp_read_dpcd(intel_dp)) + if (drm_dp_read_dpcd_caps(&intel_dp->aux, intel_dp->dpcd)) return false; /* |