drm: always determine branch device with drm_dp_is_branch()

The helper should always be used.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Oleg Vasilev <oleg.vasilev@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190829114854.1539-2-oleg.vasilev@intel.com

diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 2c7870a..f629fc5 100644 (file)
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -460,8 +460,7 @@ void drm_dp_downstream_debug(struct seq_file *m,
        int len;
        uint8_t rev[2];
        int type = port_cap[0] & DP_DS_PORT_TYPE_MASK;
-       bool branch_device = dpcd[DP_DOWNSTREAMPORT_PRESENT] &
-                            DP_DWN_STRM_PORT_PRESENT;
+       bool branch_device = drm_dp_is_branch(dpcd);
 
        seq_printf(m, "\tDP branch device present: %s\n",
                   branch_device ? "yes" : "no");

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 2f31d22..7f6b3e3 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3149,7 +3149,7 @@ static bool downstream_hpd_needs_d0(struct intel_dp *intel_dp)
         * FIXME should really check all downstream ports...
         */
        return intel_dp->dpcd[DP_DPCD_REV] == 0x11 &&
-               intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT &&
+               drm_dp_is_branch(intel_dp->dpcd) &&
                intel_dp->downstream_ports[0] & DP_DS_PORT_HPD;
 }