[PATCH v4 2/7] drm: always determine branch device with drm_dp_is_branch()

From: Oleg Vasilev <oleg.vasilev@intel.com>
To: dri-devel@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org,
	Emil Velikov <emil.velikov@collabora.com>
Subject: [PATCH v4 2/7] drm: always determine branch device with drm_dp_is_branch()
Date: Thu, 29 Aug 2019 14:48:49 +0300	[thread overview]
Message-ID: <20190829114854.1539-2-oleg.vasilev@intel.com> (raw)
In-Reply-To: <20190829114854.1539-1-oleg.vasilev@intel.com>

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
---
 drivers/gpu/drm/drm_dp_helper.c         | 3 +--
 drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index ffc68d305afe..14320930091b 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -573,8 +573,7 @@ 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 23908da1cd5d..6da6a4859f06 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2922,7 +2922,7 @@ 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;
 }
 
-- 
2.23.0

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